CN103185409A - Pumped refrigerant cooling system with 1+1 to n+1 and built-in redundancy - Google Patents
Pumped refrigerant cooling system with 1+1 to n+1 and built-in redundancy Download PDFInfo
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- CN103185409A CN103185409A CN2012105991938A CN201210599193A CN103185409A CN 103185409 A CN103185409 A CN 103185409A CN 2012105991938 A CN2012105991938 A CN 2012105991938A CN 201210599193 A CN201210599193 A CN 201210599193A CN 103185409 A CN103185409 A CN 103185409A
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Abstract
A pumped refrigerant cooling system having cooling units with associated pumping units for providing working fluid to the cooling unit to enable cooling of a space. The pumped refrigerant cooling system also includes a redundant pumping unit which is activated when a primary pumping unit associated with a cooling unit becomes inactive. The primary pumping unit is deactivated in favor of the redundant pumping unit. Once the primary pumping unit is placed in a condition suitable for reactivation, the redundant pumping unit is deactivated, and the primary pumping unit is reactivated.
Description
The cross reference of related application
The application advocates the U.S. Provisional Application No.61/580 in submission on December 28th, 2011,695 benefit of priority.The whole open combination of above-mentioned application as a reference.
Technical field
The disclosure relates to the pump refrigerant cooling system that accurate cooling is used that is used for primary cooling circuit redundancy.
Background technology
This part provides the background technical information relevant with the disclosure, and it needs not to be prior art.
Data center is the room that comprises many electronic equipments, for example computer server.Data center and the equipment that is included in wherein typically specifically have best environment running status, particularly temperature and humidity.Atmosphere control system keeps suitable temperature and humidity in the data center.
Atmosphere control system comprises cooling system, and it cools off air and supplies cool air to data center.Cooling system can comprise air-conditioning unit, for example computer room air-treatment (CRAH) or computer room air-conditioning (CRAC) unit, and its cooling is provided to the air of data center.Floor and cold air that data center can have rising are introduced into by the ventilating opening in the rising floor.The floor that raises can be configured to be provided at air compartment and the ventilating opening in the rising floor (vent) between the cold-air vent of CRAH (or CRAHs) or CRAC (or CRACs), perhaps also can use for example air compartment that separates (plenum) of pipe (duct).
Data center can also have hard floor.CRACS can for example be arranged in the several rows of electronic equipment, can arrange their cold air supply towards cold passageway (aisle) separately, or puts CRACS along the wall cloth of data center.Equipment frame (rack) at the data center place can be arranged in the hot passageway/cold passageway structure with the equipment frame that sets in a row.Typically at the cool air inlet of a framed bent of the front of the frame cool air inlet in the face of the framed bent that passes cold passageway, and the hot air outlet of a framed bent is in the face of the hot air outlet of the framed bent that passes hot passageway.
One type cooling system uses the pump refrigerant cooling unit, for example the cooling unit that uses from the XD system that Ohio Columbian LIEBERT (Liebert) company obtains.Liebert XD system has two cooling circuits, and it also can be called cooling circuit or circulation.Primary return uses chilled water or cold-producing medium, and for example R407C, and secondary loop uses pump refrigerant, for example R134a.Primary return is included in fluid heat exchanger so that the fluid of the pump refrigerant that cooling circulates in the secondary loop.The secondary loop comprises one or more phase transformation refrigerating modules, and it has the fluid to air heat exchanger, by its circulation pump refrigerant in case cool stream through the air of heat exchanger.According to specific design, heat exchanger typically can comprise evaporator coil and flow regulator or expansion valve.
USSN10/904 is expressed and be described in to foundation drawing for two cooling circuits of LiebertXD system (or circulation), and 889, name is called " cooling system (Cooling System for High Density Heat Load) that is used for the high density heat load ", it wholely openly is incorporated herein by reference.Fig. 1 of above-mentioned application and Fig. 2 are included in this and describe as Fig. 1 and Fig. 2.
With reference to figure 1 and Fig. 2, disclosed cooling system 10 comprises first cool cycles 12 (primary cooling circuit) with second circulation 14 (secondary cooling loop) thermal communication.Disclosed cooling system 10 also comprises control system 90.First and second circulations 12 and 14 include independently working fluid.Working fluid in second circulation is any volatile fluid that is suitable as conventional cold-producing medium, includes, without being limited to CFC (CFCs), hydrogen fluorohydrocarbon (HFCs), or hydrochlorofluorocarsolvent (HCFCs).Use volatile working fluid to eliminate and above apparatus sensitive, make water, as what do at the conventional system that is used for the cooling computer machine room sometimes.Second circulation 14 comprises pump 20, and one or more first heat exchangers (evaporimeter) 30, the second heat exchangers 40 are with the pipe of the different parts of second circulation 14 that interconnects.Second circulation 14 is not vapor compression refrigeration system.Replace, second circulation 14 uses pump 20 to replace compressor so that circulation is used for from volatile working fluid of heat load heat radiation.Pump 20 preferably can pumping run through volatile working fluid of second cool cycles 14, and preferably controls by the control system of controller 90 realizations.
In one embodiment, gas-liquid heat-exchange 30 can be used for cooling off the room that comprises computer equipment.For example, fan 34 can deflate by heat exchanger 30 from the room in (heat load), and second working fluid absorbs the heat from air there.In another embodiment, gas-liquid heat-exchange 30 can be used for by or directly remove heat from the electronic equipment (heat load) of generation heat near equipment place mounting heat exchanger 30.For example, electronic equipment typically is included in (not shown) in the shell.Heat exchanger 30 can be installed on the shell, and fan 34 can deflate from shell by heat exchanger 30.Alternatively, first interchanger 30 can contact with thermal source (for example cold plate) direct heat.Heat exchange rate, size and other design parameters that it will be appreciated by those skilled in the art that the parts of disclosed cooling system 10 depends on the value of the size of disclosed cooling system 10, the heat load managed and other details of particular implementation.
In the embodiment of the disclosed cooling system 10 that Fig. 1 describes, first circulation 12 comprises the chilled water circulation 60 of the liquid-liquid heat exchanger 40 that is connected to second circulation 14.Specifically, second heat exchanger 40 has first and second parts or fluid path 42 and 44 of thermal communication each other.Second path 42 that is used for the volatility working fluid connects between first heat exchanger 30 and pump 20.First fluid path 44 connects chilled water circulation 60.Chilled water circulation 60 can be similar to known in the art.Chilled water system 60 comprises first working fluid that absorbs heat through liquid-liquid heat exchanger 40 from second working fluid.First working fluid is cooled by the technology that circulates for the chilled water of routine known in the art then.Usually, first working fluid can be volatile or nonvolatile.For example, in the embodiment in figure 1, first working fluid can be water, ethylene glycol or its mixture.Therefore, second circulation, 14 embodiment can be configured to as unit independently among Fig. 1, and it holds pump 20, gas-liquid heat-exchange 30 and liquid-liquid heat exchanger 40, and can connect existing chilled water service, for example the available cooled equipment of holding under construction.
In the embodiment of the disclosed cooling system 10 of Fig. 2, second circulation 14 is basically with above-described identical.Yet first circulation 12 comprises the flow path 44 of the heat exchanger 40 that is connected to second circulation 14 or the vapor compression refrigeration system 70 of first.As in the embodiment in figure 1, replace using chilled water in order to remove heat from second circulation 14, the refrigeration system 70 in Fig. 2 directly is connected to liquid-liquid heat exchanger 40 or its " second half ".Vapor compression refrigeration system 70 can be substantially similar to known in the art.Typical vapor compression refrigeration system 70 comprises compressor 74, condenser 76 and expansion gear 78.Pipe 72 interconnects these parts and be connected to first flow path 44 of heat exchanger 40.
Vapor compression refrigeration system 70 is by removing heat to the environment (not shown) from second working fluid through second heat exchanger 40 from interchanger 40 absorption heats and radiate heat with first working fluid.First working fluid can be volatile.For example, in the embodiment of Fig. 2, first working fluid can be the chemical refrigerant of any routine, includes, without being limited to CFC (CFCs), hydrogen fluorohydrocarbon (HFCs), or HCFC (HCFCs).Expansion gear 78 can be valve, aperture or other devices well known by persons skilled in the art, in order to produce working fluid through out-of-date pressure drop.Compressor 74 can be the compressor of any kind of known in the art, in order to be suitable for cold-producing medium service, for example reciprocating compressor, scroll compressor etc.In the embodiment that Fig. 2 describes, cooling system 10 is a whole set of.For example, vapor compression refrigeration system 70 can belong to the part of individual unit, and it also holds pump 20 and liquid-liquid heat exchanger 30.
In disclosed system operating period, pump 20 moves to gas-liquid heat-exchange 30 by managing 22 with working fluid.Pump increases the pressure of working fluid, and the maintenance of its enthalpy is substantially the same.Therefore pumping workflow physical efficiency enters the evaporimeter 30 of gas-liquid heat-exchange or second circulation 14.Fan 34 can deflate from heat load through heat exchanger 30.When hot-air entered gas-liquid heat-exchange 30 from the heat load (not shown), volatile working fluid absorbed heat.When fluid is heated through heat exchanger, some volatile working fluids will evaporate.In the cooling system 10 of load fully, the fluid that leaves first heat exchanger 30 can be saturated basically steam.Steam flow to liquid-liquid heat exchanger 40 from heat exchanger 30 through pipe 36.In pipe or return line 36, working fluid is vapor state basically, and when its enthalpy kept substantial constant, fluid pressure descended.In liquid-liquid heat exchanger 40, the steam in second fluid path 42 by with first circulation 12 of transfer of heat in the first fluid path 44 first, colder fluid is condensed.The working fluid of condensation leaves heat exchanger 40 and enters pump 20 by managing 46, and second circulation 14 can repeat there.
First cool cycles 12 and second circulation 14 operation jointly are so that by absorbing from second working fluid that heat enters first working fluid and heat is discharged to the environment (not shown) and removes heat from second circulation 14.As mentioned above, first circulation, 12 chilled water system 60 or the vapor compression refrigeration systems as shown in Figure 2 70 that can comprise as shown in Figure 1.At chilled water system 60 run durations of Fig. 1, for example, first working fluid can flow through the first fluid path 44 of heat exchanger 40, and can cool off in the cooling tower (not shown).At the run duration of the refrigeration system 70 of Fig. 2, for example, first working fluid is through the first 44 of liquid-liquid heat exchanger 40, and the volatile fluid from second circulation 14 absorbs heat.Working fluid evaporates during the course.Steam is transported to compressor 74, and working fluid is compressed there.Compressor 74 can be back and forth, the compressor of vortex or other kind known in the art.After compressing, working fluid is carried through discharge pipe and is arrived condenser 76, and heat is dissipated into external heat sink from working fluid there, for example, and outdoor environment.When leaving condenser 76, flow of refrigerant arrives expansion gear 78 through liquid line.When cold-producing medium process expansion gear 78, the pressure drop of first working fluid experience.When leaving expansion gear 78, working fluid flows through the first fluid path of liquid-liquid heat exchanger 40, and it is as the evaporimeter that is used for kind of refrigeration cycle 70.
The supplier of data center constantly seeks and improves reliability and from uptime (up time) of atmosphere control system.Therefore, the supplier of data center constantly needs to improve the redundancy in atmosphere control system, so that the prevention cooling electronic apparatus is because the unexpected unnecessary downtime of interrupting the operation of atmosphere control system.A redundant pattern is to copy each element of cooling system, for example first cool cycles 12 and second cool cycles 14.This whole redundancy may be expensive and be very complicated Cooling System Design, enforcement and control.In different structures, redundancy can comprise the enforcement of cooling circuit, comprises for example second enforcement that reduces of second cool cycles 14 shown in Fig. 1 and Fig. 2.The redundancy that reduces can comprise the second pump unit 20 and half of the heat exchanger that provides in elementary cooling system.Carry out these redundant systems and will also need detection and the control of being correlated with.Correspondingly, about cost of this system can be within 50% scope of basic cold load cost sum.
For redundancy so as another method of minimization device can comprise by utilizing refrigerating module excessively to provide environment with configuration complexity, that intersect.Therefore the fault of a cooling circuit can become the zone of a cooling circuit of damage by other cooling circuit intersection.This cost that raising is provided again for the consumer that excessively provides, it comprises extra pump, refrigerating module, detection, pipeline and the control system of the routine configuration that surpasses shown in Fig. 1 and Fig. 2.
Summary of the invention
This part provides summary of the invention of the present disclosure, and its four corner or all features do not have detailed open.
A kind of cooling system, it is used for cooling and has the load that cold-producing medium is recycled to the elementary refrigerating module of load.If elementary refrigerating module is deactivated, then when elementary refrigerating module was deactivated, redundant refrigerating module provided cold-producing medium to arrive flowing of load.Elementary refrigerating module can be restarted to be conducive to the secondary cooling module.When this took place, the secondary cooling module was deactivated.Redundant refrigerating module is set to be provided at the fluid that flow to any load in the cooling system.
Each refrigerating module in elementary cooling and the secondary cooling module also comprises the pump for circulating refrigerant, and this pump is provided to load with first temperature with cold-producing medium.Each module in the primary and secondary module also comprises for the condenser that receives cold-producing medium from load.The cold-producing medium that is received by condenser is in the temperature higher than first temperature.Each module in the primary and secondary module also comprises liquid receiver, and it receives the cold-producing medium from the liquid condition of condenser.
A kind of cooling system, it is used for cooling load, and this cooling system has the refrigerating module that cold-producing medium is recycled to load.Elementary refrigerating module has a pair of loop, and described loop comprises controller, pump and at least one valve.Common condenser and receiver are shared in a pair of loop.A loop is not moved if a pair of loop is moved redundantly, then moves another loop and flows with the fluid of control through refrigerating module.
A kind of cooling system, it comprises elementary refrigerating module, elementary refrigerating module is provided to load with cold-producing medium.Cooling system also comprises first liquid receiver that is associated with elementary refrigerating module and is used for receiving the cold-producing medium of liquid condition.Under the situation that detects elementary cooling deficiency, the secondary cooling module provides through replenishing of the cold-producing medium of overload and flows.
A kind of cooling system comprises a plurality of elementary refrigerating modules.Elementary refrigerating module provides cold-producing medium through a corresponding heat load in a plurality of heat loads.The a plurality of liquid receivers that are associated with separately elementary refrigerating module receive the cold-producing medium of liquid conditions.The secondary cooling module provides selectively through flowing with the replenishing of cold-producing medium of the load that is associated for the elementary refrigerating module that detects fault.Each elementary refrigerating module also comprises be used to a plurality of first pumps that cold-producing medium is provided.A plurality of first pumps are provided to cold-producing medium the load separately that is associated with separately elementary refrigerating module with first temperature.A plurality of second condensers receive cold-producing medium from the load separately that is associated with separately elementary refrigerating module.The cold-producing medium that is received by separately condenser is in the temperature higher than first temperature.
A kind of method that in cooling system, is used for providing redundant cooling, method comprises provides the elementary refrigerating module with loop, and elementary refrigerating module provides cooling fluid to arrive heat load.Method also comprises provides the secondary cooling module and the secondary cooling module that brings into operation.Method comprises also the secondary cooling module is inserted into the loop that the secondary cooling module provides cooling fluid to arrive heat load.Control the elementary receiver that is associated with elementary refrigerating module and with secondary receiver that the secondary cooling module is associated between elementary receiver valve, in order to before the secondary cooling module is inserted into the loop, be equilibrated at pressure between elementary receiver and the secondary receiver.Method also comprises stops using elementary refrigerating module.
A kind of be used to the method that provides the cooling system Redundant Control, method comprises provides a plurality of elementary refrigerating modules, elementary refrigerating module to provide cold-producing medium through separately heat load.The a plurality of liquid receivers that provide corresponding to separately elementary refrigerating module also are provided method, and each liquid receiver receives the cold-producing medium of liquid condition from the condenser separately that is associated with separately elementary refrigerating module.The secondary cooling module provides selectively through replenishing of the cold-producing medium of the load that is associated with the elementary refrigerating module of selecting and flows.
A kind of device, it comprises refrigerating module, refrigerating module provides cold-producing medium through overload.First controller is associated with the first in loop, and the first in this loop is associated with refrigerating module.Second controller is associated with the second portion in loop, and the second portion in this loop is associated with refrigerating module.In first pattern, the first of the first controller control loop, and the second portion of the second controller control loop.In second pattern, a controller in first controller or second controller is controlled another in the second portion in the first in first and second parts both or loop or loop.
Make the other field of using also become clear from the explanation that is provided at this.Explanation in summary of the invention part and certain embodiments only are illustrative purposes and do not limit the scope of the present disclosure.
Description of drawings
Accompanying drawing is described in this just to the illustrative purpose of the embodiment that selects, and not all possible enforcement, and does not limit the scope of the present disclosure.
Fig. 1 is the schematic diagram that is connected to the primary cooling circuit of chilled water circulation;
Fig. 2 is the schematic diagram with cooling system of the primary cooling circuit that utilizes vapor compression refrigeration system;
Fig. 3 is according to the schematic diagram of the cooling system of the first structure setting;
Fig. 4 is the schematic diagram of Fig. 3 cooling system, and wherein redundant pump unit initially is used for operation;
Fig. 5 is the schematic diagram of Fig. 3 cooling system, the load that it shows redundant pump unit and lost efficacy along with main pump unit;
Fig. 6 is the schematic diagram of the cooling system of Fig. 3, and wherein the main pump unit of Ting Yonging initially is used for recovering;
Fig. 7 is the schematic diagram that previous main pump unit of stopping using is resumed operation;
Fig. 8 is the flow chart of describing Fig. 3, and it is described and is used for starting redundant pump unit and the process that main pump unit is stopped using;
Fig. 9 describes the flow chart that is used for starting main pump unit and makes the inactive process in redundant pump unit;
Figure 10 is the schematic diagram with pump unit of the Redundant Control of controlling for chilled-water flow;
Figure 11 is the flow chart of describing the process that is used for the redundant chilled-water flow control of execution; And
Figure 12 is the flow chart of describing second process that is used for the redundant chilled-water flow control of execution.
Identical Reference numeral is represented identical part in running through a plurality of diagrams of accompanying drawing.
The specific embodiment
The embodiment that exemplifies is described now more completely with reference to the accompanying drawings.
Provide the embodiment that exemplifies so that the disclosure can be completely, and fully those skilled in the art are expressed scope.Set forth many specific details, the example of certain components, apparatus and method for example is in order to provide understanding completely to disclosure embodiment.Significantly for a person skilled in the art, needn't adopt specific details, the embodiment that exemplifies can be summarised in many different forms, and also should not be construed to the restriction scope of disclosure.In the embodiment that some exemplifies, well-known process, well-known apparatus structure, well-known technology does not write up.
Use just to the purpose of describing certain embodiments, and is not to want to limit at this term.When using at this moment, singulative " ", " one " and " being somebody's turn to do " can also be used for comprising plural form, unless context clearly expression in addition.Term " comprises ", " containing ", " comprising " be identical with " having ", and therefore existence feature, integral body be described, step, operation, element and/or parts do not exist or increase one or more other features but do not hinder, whole, step, operation, element, parts, and/or its combination.Be described in this method step, process and operate in when specific order is discussed or illustrated and be not considered to necessary is unless specifically be defined as the order that shows.Also can be understood as and to adopt other or step optionally.
When element or layer be called " ... on ", when " joining to ", " being connected to " or " being attached to " another element or layer, may be directly thereon, engage, connect or be attached to another element or layer, insertion element or layer maybe can appear.Opposite, when element be called " directly exist ... on ", when " directly joining to ", " directly being connected to " or " being bonded directly to " another element or layer, may not have insertion element or layer.Be used for being described in other word that concerns between the element should explain in a similar fashion (for example, " and ... between " with " and directly exist ... between " corresponding, " vicinity " is corresponding with " directly being close to " etc.).When this uses, term " and/or " one or more relevant draw up any of project and whole combinations comprised.
Although term the first, the second, C grade etc. can use at this different elements is described, parts, the zone, layer and/or part, these elements, parts, the zone, layer and/or part should not limit by this term.This term can only be used for from an element, parts, and the zone, layer or part are distinguished another element, parts, zone, layer or part.Term for example " first ", " second " and other numerical value terms does not hint order or order at this moment when using, unless clearly represent by context.Therefore, first element that is discussed below, parts, the zone, layer or part can be term second elements, parts, the zone, layer or part, and do not break away from the instruction of embodiment for example.
The term of space correlation, for example " inside ", " outside ", " ... under ", " be lower than " " bottom ", " being higher than ", " top " etc., can use at this and be convenient to explanation, when illustrating in the drawings with box lunch, describe an element or feature for the relation of another element or feature.The term of space correlation can be used for being included in directions different when using or moving except the direction of describing in the drawings.For example, if the device be reversed in the drawings, element be described as " being lower than " or " ... under ", so other element or feature will be directed " being higher than " another element or feature.Like this, the embodiment term " be lower than " can comprise above and below both direction.Device can and use in this description of space correlation and explain respectively by in addition directed (revolve turn 90 degrees or with other direction).
Fig. 3 has described the schematic diagram of the pump refrigerant cooling system 100 with redundant pump unit.Pump refrigerant cooling system 100 comprises a plurality of cooling subsystem 110a, 110b ..., 110n, each has backing pump unit 120a separately, 120b ..., 120n.Each backing pump unit 120a, 120b ..., 120n provides working fluid is pumped into heat exchanger or cooling device 122a, 122b ..., 122n.Each cooling unit 122a, 122b ..., 122n is in the environment that is cooled, for example the data room.Should notice that n can be the quantity that any positive integer and the element of representing similar setting are in the drawings selected.For example, pump unit 120a, 120b ..., 120n relates to n pump unit.The quantity that those skilled in the art recognize that the pump unit can change, and it depends on the particular implementation of the pump refrigerant cooling system 100 that is described in this.This quantity convention can be described other similar unit.In some cases, n (or other quantity) unit can jointly be used reference numbers to describe rather than a, b ..., n.In addition, run through the same Reference numeral of specification and can be used for describing similar elements.
Each main pump unit 120 comprises first pump 124 and second pump 126, its with high pressure pumping working fluid to separately check-valves 132,134.Pump 124,126 can be arranged to first redundant configuration.Alternatively, pump 124,126 can be arranged to jointly that convection cell applies output pressure, and fluid flows through separately check-valves 132,134 to outlet line 136.Pump 124,126 can be controlled to provide redundant and move both jointly.In different embodiment, main pump unit can be configured to omit in the pump 124,126.
Fluid through outlet line 136 pumpings is used for cooling unit 122.Cooling unit 122 can present a lot of structures, comprises the structure of the evaporimeter 30 that is similar to Fig. 1 and Fig. 2.Cooling unit 122 is arranged in the environment, and what wish there is to remove heat by the fluid that heat is sent to through outlet line 136 pumpings from cooling unit 122 residing environment.Fluid from outlet line 136 enters cooling unit 122 with first temperature, and discharges cooling unit 122 with high temperature in pipeline 140.Fluid through cooling unit 122 pumpings also can change state to gas phase from liquid phase.The pipeline 140 that is commonly called suction line 140 turns back to main pump unit 120 with working fluid.
Fluid in suction line 140 is imported into condenser 138.Condenser 138 receives the working fluid of first state with first density (for example gas), and the heat in the working fluid is discharged to the output fluid of second state of high density (for example liquid) more.Fluid changes state through condenser 138 from the gas phase to the liquid phase.The chilled water (showing with the pump unit 120 among Fig. 3) that provides from chilled water inlet pipeline 139 is provided condenser 138.Chilled water circulates in order to remove heat from the working fluid that receives from suction line 140 through condenser 138.Return chilled water in order to provide chilled water by chilled water outlet pipeline 141 (shown in the pump unit 120 of Fig. 3) from condenser 138.The output of condenser 138 is output through the return line 144 that is input to receiver 142.Receiver 142 reclaims the working fluid that is used for use by pump unit 120.Receiver 142 turns back to separately pump 124,126 by receiver export pipeline 143 with working fluid.Bypass line 146 bypass receivers are so that fluid flows directly to receiver export pipeline 143 from the outlet of condenser 138, thus bypass receiver 142.Receiver export pipeline 143 is provided to pump 124,126 by pump intake pipeline 148,150 separately with working fluid.
Except main pump unit 120a, 120b ..., outside the 120n, redundant pump unit 120 ' is included in the pump refrigerant cooling system 100 of Fig. 1.Redundant pump unit 120 ' provides working fluid with a pressure, any main pump unit 120a of result, and 120b ..., the 120n inefficacy that should become.In such a way, it is redundant to another pump unit that pump unit 120 ' provides, and keeps the uptime thus and be provided for the refrigerating function of any cooling unit 122 relevant with the main pump unit of stopping using.
The operation of system is described with respect to Fig. 4-7.When the unit becomes maybe must stop using the time, because therefore the different service condition of main pump unit 120 starts redundancy unit 120 ' so that the main pump unit that replaces stopping using.For example, if main pump unit 120a needs to lose efficacy, then start redundant pump unit 120 ' so that the pumping function of the main pump unit 120a that is provided for stopping using.When this took place, valve 160a opened in order to connect receiver 142a and receiver 142 ', as shown in Figure 4, made isostasy between receiver 142a and 142 '.Represent through receiver link 158 ' equalization to take place by thick line in Fig. 4.At preset time after the cycle, balanced at main pump unit 120a receiver 142a and the pressure between the receiver 142 ' of redundant pump unit 120 '.
In case isostasy, redundant pump unit 120 ' starts to be provided for the pumping function of relevant cooling unit 122a with main pump unit 120a.As shown in Figure 5, for redundant pump unit 120a is provided for the pumping function of cooling unit 122a, valve 156a opens in order to be directed to the condenser 138 ' of redundant pump unit 120 ' by steam pipe line 140 ' from the working fluid of the form that typically is in steam of cooling unit 122a output.Also during being transformed into redundant pump unit 120 ', valve 154a opens so that liquid line 136 ' provides the working fluid that typically is in liquid condition to cooling unit 122a.The switch of valve 156a and 154a makes redundant pump unit 120 ' can be provided for the pumping function of main pump unit 120a.The fluid that is redirected flows and points to the redundant pump unit 120 ' of the pumping function that is provided for inactive main pump unit 120a.This illustrates by the thick line among Fig. 5.Therefore main pump unit 120a can be deactivated.Receiver valve 160a closes then.
In case determine to recover main pump unit 120a, need redundant pump unit 120 ' to lose efficacy thus, above-described similar process takes place.
In order to begin the main pump unit 120a that stops using is turned back to the process of running status, receiver valve 160a is open with the pressure between the receiver 142 ' that allows balanced receiver 142a at pump unit 120a and redundant pump unit 120 '.This represents in Fig. 6, and wherein the fluid that illustrates for the receiver link 158 ' of counterpressure with thick line flows.In different embodiment, receiver valve 160 can be arranged on the structure of often opening and cut out selectively in order to isolate specific and relevant receiver 142.In case pressure is balanced, main pump unit 120a starts so that working fluid is pumped through the fluid circuit of pump unit 120a then.In order to produce this transformation, valve 156a is adjusted to the output that is closed in cooling unit 122a and the connection between the redundant steam pipe line 140a '.This guiding fluid arrives entrance and the condenser 138a of pump unit 120a from the outlet of cooling unit 122a.In addition, valve 154a closes so that the outlet of pump unit 120a provides working fluid through the input of liquid line 136a to cooling unit 122a.Closing of valve 154a also is breaking at upward flowing of working fluid of redundant steam pipe line 136 '.The fluid that the receiver valve 160a of pump unit 120a also closes to be breaking between the receiver 142 ' of the receiver 142a of pump unit 120a and redundant pump unit 120 ' connects.Therefore, pump unit 120a resumes operation, shown in the thick line of Fig. 7.
Fig. 8 is provided for from the backing pump unit flow chart of non-limiting examples of the handoff procedure of redundant pump unit.Control originates in piece 170 and proceeds to piece 172.The receiver pressure of piece 172 equilibriums between the backing pump unit that is deactivated and the redundant pump unit that is activated.Control proceeds to piece 174 then, and it starts redundant pump unit.In case redundant pump unit starting, control proceeds to piece 176, and control valve is arranged to the mobile redundant pump unit that is transformed into away from the backing pump unit of fluid there.Control proceeds to piece 178 then, and the backing pump unit is deactivated there.In certain embodiments, along with the inefficacy of backing pump unit, control proceeds to piece 180, and elementary receiver valve is closed there.Process finishes at piece 182.
Fig. 9 has described the block diagram that is used for backing pump is turned back to the effective status that is communicated with cooling unit and the non-limiting examples of stopping using redundant pump unit.Control originates in piece 190 and proceeds to piece 192, and it is balanced for the redundant pump unit separately that is deactivated with by the receiver of effective backing pump unit.Control proceeds to piece 194 then, and the conversion with expection starts the backing pump unit there.Along with the startup of backing pump unit, control proceeds to piece 196, and it changes valve so that the conversion fluid flow to the backing pump unit and away from redundant pump unit.Control proceeds to piece 198 then, and redundant pump unit is deactivated then there.In certain embodiments, along with the inefficacy of redundant pump unit, control proceeds to piece 200, and elementary receiver valve is closed there.Control proceeds to end block 202 then.
Figure 10 has described the cooling system 210 that arranges according to different embodiment.Cooling system 210 comprises be used to the pump unit 220 that the fluid that is pumped into cooling unit (Figure 10 does not illustrate) is provided.Pump unit 220 runs to above-described pump unit 120 similarly.Pump unit 220 comprises built-in redundancy in different embodiment, and can be a pair of dual or parallel pump unit, valve and the controller of sharing common condenser and receiver.
Figure 10 also illustrates chilled water inlet pipeline 139 and chilled water outlet pipeline 141.Chilled water is input to condenser 138 by suction line 139.Chilled water does not provide from freezing water source (Figure 10 illustrates), for example builds chilled water.Chilled water is hot transmission of fluid realization from circulating condenser 138 through condenser 138 so that by outlet line 136 and suction line 140.Chilled water is by chilled water outlet pipeline 141 eductor condensers 138.
Chilled water outlet pipeline 141 connects redundancy detection and the control loop 224 with first branch of a circuit 226 and second, redundant branch of a circuit 226 '.Should be noted that branch of a circuit 226,226 ' is set up with common balanced configuration, and branch of a circuit can be expression as elementary or redundant branch of a circuit or the branch of a circuit that can be called operation and dormancy respectively arbitrarily.Each branch of a circuit 226,226 ' comprises a pair of valve 232,232 ' that is connected to chilled water outlet pipeline 141.Valve 232,232 ' output be combination and be input to flowmeter 236.In different embodiment, valve 232,232 ' can be to return valve as normally closed spring.
In different embodiment, control loop 224 also comprises pair of control device 238,238 ', and it provides redundant for left side and pump unit, right side 220.Controller 238 is communicated with valve 232 by control line 242.Similarly, controller 238 ' is communicated with valve 232 ' by control line 242 '.Controller 238 is communicated with pump 124 by control line 240.Similarly, controller 238 ' is communicated with pump 126 by control line 240 '.In different embodiment, controller 238 also comprises the holding wire that is used for monitoring unsteady flow metered valve 232 ' by holding wire 246, and controller 238 ' monitors the state of unsteady flow metered valve 232 by holding wire 246 '.Controller 238,238 ' by connecting 230 connections, and connecting 230 can be signal or data wire.
Be in operation, pump unit 220 plays the effect in the redundancy running loop of sharing common condenser 138 and receiver 142.Controller 238, valve 232 and pump 124 and associated electrical comprise first redundancy section in loop with fluid line, and controller 238 ', valve 232 ' and pump 126 and associated electrical comprise second redundancy section in loop with fluid line.In different embodiment, the control between the redundancy section in loop is selected by taking place through connecting 230 controller in communication 238,238 '.Connecting 230 can be holding wire in different embodiment, or can be data wire in other embodiments.In different embodiment, controller 238,238 ' by keeping another controller to arbitrate control at the connection 230 generation signals of resting state.For example, if controller 238 produces signal in connection 230, as long as controller 238 produces signals, then controller 238 ' will remain on resting state.Produce signal if controller 238 terminates in to connect on 230, then controller 238 ' will start and correspondingly produce signal in connection 230, its with retentive control device 238 in resting state.In other different embodiment, controller 238,238 ' can communicate by swap data via connecting 230, so that arbitration is to the control of pump unit 220.
In different embodiment, the various piece in its redundant loop can be controlled and monitor to controller 238, comprises valve 232, pump unit 124 and relevant connection and control line.Controller 238 ' can monitor the parts for the various piece in its redundant loop similarly.If controller 238 detects the fault in any its circuit element separately, be included in the fault within the controller itself, then controller 238 can cut out, and transfers control to controller 238 ' thus.Controller 238 ' moves similarly, and starts controller 238 when controller 238 ' detects fault in its redundant loop feature separately.
In different embodiment, controller 238,238 ' control valve 232,232 ', pump 124,126 and monitor traffic meter 236 separately.In different embodiment, controller 238 monitors whether flowing in relative branch of a circuit 238 ' takes place in order to determine the interruption of flowing.Similarly, in different embodiment, whether controller 238 ' monitors fluid flowing in relative branch of a circuit, take place in order to determine the interruption of flowing.If interrupt taking place, then control loop becomes activation relatively.As infinite embodiment, controller 238 control valves 232.Controller 238 also monitors the operation of flow valve 232 ' by holding wire 246.Controller 238 operations are flowing through valve 232 so that control is flowed.Controller 238 ' moves similarly with respect to valve 230 ' and valve 232.Controller 238 ' control valve 232 ' similarly.Controller 238 ' also monitors the operation of flow valve 232 by holding wire 246 '.Controller 238 ' operation is flowing through valve 232 ' so that control is flowed.
In different embodiment, controller 238,238 ' can control fluid through the flowing and respectively or operation jointly of separately branch of a circuit 226,226 ', so that control is flowed at the fluid of outlet line 141.In different embodiment, controller 238, in 238 ' one can control fluid through its flowing of branch of a circuit separately 226,226 '.If fault should occur in the relevant branch of a circuit element of any and specific controller, then liquid flow control can present and control by another controller that uses another branch of a circuit.In this different embodiment, fluid only flows through one in the branch of a circuit 226,226 '.
In the embodiment of different other, fluid flows and can take place through each branch of a circuit 226,226 ' separately, so that combination mobile provides the fluid that needs flowing through chilled water outlet pipeline 141.In this different embodiment, the fluid that flows can be separated, therefore only about half of fluid flows through 226 generations of a branch of a circuit, and second half fluid flows and takes place through branch of a circuit 226 ', is combined into thus for the required whole fluids through chilled water outlet pipeline 141 and flows.If arbitrary branch of a circuit 226,226 ' breaks down, then its branch of a circuit can be deactivated (inefficacy) by its controller separately, and flows and can be increased through the fluid of another branch of a circuit, flows through chilled water outlet pipeline 141 with the fluid that needing to keep.
The flow chart 250 of the operation that the redundant branch of a circuit that Figure 11 has described proves Figure 10 is implemented.The control beginning is at begin block 252 and proceed to decision block 254.At decision block 254, carry out test in order to determine whether fault is present in primary return branch.Primary return branch can be at random as branch of a circuit 226,226 ' one and determine, keeps remaining branch of a circuit as redundancy, secondary or other branch of a circuit.Can suppose that branch of a circuit 226 is primary return branches.If there is not fault to occur in the primary return branch 226, decision block 254, retest are there got back in control.If break down in primary return branch 226, control proceeds to piece 256, and switch takes place in secondary cycles branch 226 ' there.In different embodiment, then switching can be subjected to the influence that controller 238 stops, and this causes controller 238 ' to bring into operation.In other different embodiment, control can stop and get back to 254.Whether in different embodiment, control proceeds to piece 258 then, finish test there and remove in order to determine the branch of a circuit fault.If no, then control turns back to piece 258, retest there.If fault is removed, then control proceeds to piece 260.At piece 260, by opening stop valve 230 and unsteady flow metered valve 232 and close time step valve 230 ' and close or reduce fluid and flow through secondary flow valve 232 ' separately, realize returning to primary return branch.Control proceeds to piece 262 then, and process is finished there.
When the branch of a circuit 226,226 ' of Figure 10 both each provided a part of fluid to flow through chilled water outlet pipeline 141, Figure 12 had described the block diagram 270 of the redundant scheme of guiding.Control is from begin block 272 beginning and proceed to piece 274, and two branch of a circuit of its operation are so that (equally or unequally) shares flowing through chilled water outlet pipeline 141.Control proceeds to decision block 276 then, and it finishes test in order to determine whether to exist load to change fault in of two branch of a circuit 226,226 '.If do not detect load change or fault, then decision block 276, its retest are got back in control.If detect load change or fault, then control proceeds to piece 278, adjusts in redundancy or fault loop branch by control associated pump and valve there and flows.Control proceeds to piece 280, and the fluid that flows in primary return is conditioned to keep the speed with needs to flow through chilled water outlet pipeline 141 there.Whether control proceeds to piece 282, carry out test there and solve in order to determine the fault in fault loop branch.If load change or fault do not solve, test block 282, retest are there got back in control.If the load change fault solves, then control proceeds to piece 284, adjusts the fluid that flows through initial cycle branch there.Control proceeds to piece 286, be adjusted through redundant branch of a circuit mobile there in case branch of a circuit 226,226 ' both share the fluid that flows through outlet line 141.Control proceeds to piece 288 next time, and process is finished there.
Provide the above-mentioned explanation of embodiment to be used for illustrating and illustrative purposes.Not to want detailed or restriction the present invention.Independent element or the feature of certain embodiments are not limited to certain embodiments usually, still, wherein be fit to, and be interchangeable and embodiment that can be used to select, specifically do not illustrate or describe even be not.Identical can also change in many-side.This variation is not considered to depart from the present invention, and all this distortion are defined as comprising within the scope of the present invention.
Claims (40)
1. cooling system comprises:
Elementary refrigerating module, elementary refrigerating module is through the load cycle cold-producing medium;
First liquid receiver that is associated with elementary refrigerating module is for the cold-producing medium that receives liquid condition; With
The secondary cooling module is detecting elementary cooling when not enough, and the secondary cooling module provides the flow of refrigerant of replenishing through overload.
2. according to the cooling system of claim 1, wherein elementary refrigerating module also comprises:
Be used for first pump of circulating refrigerant, first pump is provided to load with first temperature with cold-producing medium; With
Be used for receiving from load first condenser of cold-producing medium, the cold-producing medium that is received by first condenser is in the temperature higher than first temperature.
3. according to the cooling system of claim 2, wherein the secondary cooling module also comprises:
Be used for second pump of circulating refrigerant, this pump is provided to load with first temperature with cold-producing medium; With
Be used for receiving from load second condenser of cold-producing medium, the cold-producing medium that is received by second condenser is in the temperature higher than first temperature.
4. according to the cooling system of claim 3, also comprise second liquid receiver that receives the cold-producing medium of liquid condition from second condenser.
5. according to the cooling system of claim 4, also include the selectively receiver link of the fluid pressure of UNICOM between first liquid receiver and second liquid receiver, in order to be equilibrated at the pressure between first liquid receiver and second liquid receiver.
6. according to the cooling system of claim 5, also comprise the receiver valve in the receiver link that is arranged between first liquid receiver and second liquid receiver, so that the fluid of control between first receiver and second receiver flows.
7. according to the cooling system of claim 3, also comprise:
Be used for the control inlet valve that fluid flows between a refrigerating module of load entrance and elementary refrigerating module and secondary cooling module; With
Be used for the control outlet valve that fluid flows between a refrigerating module of load outlet and elementary refrigerating module and secondary cooling module.
8. according to the cooling system of claim 2, also comprise:
First valve with entrance of the chilled water outlet pipeline that is connected to condenser;
Second valve in parallel with first valve, and second valve has the entrance of the chilled water outlet pipeline that is connected to condenser;
First controller that is associated with first valve; With
Second controller that is associated with second valve,
Wherein in first pattern, first controller is controlled first valve, and second controller is controlled second valve, and in second pattern, and a controller of first controller or second controller is controlled in second valve or first valve valve separately.
9. cooling system according to Claim 8, wherein first controller is associated with first pump, and second controller is associated with second pump, first pump wherein, first valve and first controller form first loop, and second pump, second valve and second controller form second loop, and first and second loops cooperate in order to control cooling system redundantly.
10. cooling system according to Claim 8, wherein first controller is communicated by letter by being electrically connected with second controller.
11. the cooling system according to claim 10, wherein when a controller of first controller or second controller begins to communicate by letter between them, a controller of first controller or second controller begins the parts of Control on Communication cooling system, and the be cooled control assembly of system of another controller of first controller or second controller is forbidden.
12. cooling system according to Claim 8, wherein first controller communicates by letter to determine the specific features of which controller control cooling system with second controller.
13. cooling system according to Claim 8, wherein first controller monitors at least one state of second valve or second pump, and second controller monitors at least one state of first valve or first pump.
14. a cooling system comprises:
A plurality of elementary refrigerating modules, elementary refrigerating module provide cold-producing medium through separately a heat load in a plurality of heat loads;
The a plurality of liquid receivers that are associated with separately elementary refrigerating module, each liquid receiver receives the cold-producing medium of liquid condition; With
Secondary cooling module, secondary cooling module provide additional flow of refrigerant to pass through selectively and detect the load that out of order elementary refrigerating module is associated.
15. according to the cooling system of claim 14, wherein each elementary refrigerating module also comprises:
Be used for providing a plurality of first pumps of cold-producing medium, a plurality of first pumps are provided to the cold-producing medium of first temperature load separately that is associated with separately elementary refrigerating module; With
Be used for receiving from the load separately that is associated with separately elementary refrigerating module a plurality of first condensers of cold-producing medium, the cold-producing medium that is received by separately first condenser is in the temperature higher than first temperature.
16. according to the cooling system of claim 15, wherein the secondary cooling module also comprises:
Second pump that is used for the supply cold-producing medium, second pump with the cold-producing medium of first temperature be provided to for detecting the load that out of order elementary refrigerating module is associated; With
Be used for from for detecting second condenser that load that out of order elementary refrigerating module is associated receives cold-producing medium, the cold-producing medium that is received by second condenser is in the temperature higher than first temperature.
17. according to the cooling system of claim 16, also comprise second liquid receiver that receives cold-producing medium with liquid condition from second condenser.
18. the cooling system according to claim 16, also comprise the receiver valve, its be arranged on for detecting during first liquid receiver that out of order elementary refrigerating module is associated and the receiver between second liquid receiver link, so that the fluid of control between first receiver and second receiver flows.
19. the cooling system according to claim 16 also comprises:
The a plurality of inlet valves that are associated with separately elementary refrigerating module, it is mobile with elementary refrigerating module separately and the fluid between the secondary cooling module at the entrance of separately load to be used for control; With
The a plurality of outlet valves that are associated with separately elementary refrigerating module, it is mobile with elementary refrigerating module separately and the fluid between the secondary cooling module in the outlet of separately load to be used for control.
20. a method that is used for providing redundant cooling comprises:
Elementary refrigerating module with loop is provided, and elementary refrigerating module is provided to heat load with cooling fluid;
The secondary cooling module is provided;
The secondary cooling that brings into operation module;
The secondary cooling module is inserted in the loop, and the secondary cooling module is provided to heat load with cooling fluid;
Control elementary receiver valve so as to be equilibrated at the elementary receiver that is associated with elementary refrigerating module and with secondary receiver that the secondary cooling module is associated between pressure, in order to before the secondary cooling module is inserted into the loop, be equilibrated at pressure between elementary receiver and the secondary receiver; With
Inactive elementary refrigerating module.
21. according to the method for claim 20, also be included in elementary refrigerating module and close elementary receiver valve after having stopped using.
22. according to the method for claim 20, comprise also cooling system is turned back to normal operation that it comprises:
Begin the operation of elementary refrigerating module;
Elementary refrigerating module is inserted into for the loop of cooling fluid to heat load is provided; With
Inactive secondary cooling module.
23. the method according to claim 22, also comprise open elementary receiver valve so as to be equilibrated at the elementary receiver that is associated with elementary refrigerating module and with secondary receiver that the secondary cooling module is associated between pressure, in order to before elementary refrigerating module is inserted into the loop, be equilibrated at pressure between elementary receiver and the secondary receiver.
24. according to the method for claim 23, also be included in the secondary cooling module and close elementary receiver valve after having stopped using.
25. the method for the Redundant Control that cooling system is provided comprises:
A plurality of elementary refrigerating modules are provided, and elementary refrigerating module is provided to separately heat load with cold-producing medium;
A plurality of liquid receivers corresponding to separately elementary refrigerating module are provided, and each liquid receiver receives the cold-producing medium of liquid condition from the condenser separately that is associated with separately elementary refrigerating module; With
The secondary cooling module is provided, and the secondary cooling module provides the additional load of flow of refrigerant through being associated with the elementary refrigerating module of selecting selectively.
26. the method according to claim 25 also comprises:
The cold-producing medium of first temperature is fed to the load that is associated with the elementary refrigerating module of selecting; With
From the load supply cold-producing medium that is associated with the elementary refrigerating module of selecting, the cold-producing medium that is received by first condenser is in the temperature higher than first temperature.
27. the method according to claim 25 also comprises:
With the cold-producing medium of first temperature be fed to for detecting the load that out of order elementary refrigerating module is associated; With
From receiving cold-producing medium for detecting the load that out of order elementary refrigerating module is associated, the cold-producing medium of reception is in the temperature higher than first temperature.
28. according to the method for claim 27, also comprise the cold-producing medium that receives liquid condition from second condenser.
29. the method according to claim 28, also with for detect first liquid receiver that out of order elementary refrigerating module is associated and with second liquid receiver that the secondary cooling module is associated between communication of fluid pressure selectively, in order to be equilibrated at pressure between first receiver and second receiver.
30. the method according to claim 29, also comprise provide be arranged on for detecting first liquid receiver that out of order elementary refrigerating module is associated and the receiver between second liquid receiver receiver valve in linking, so that the fluid of control between first liquid receiver and second liquid receiver flows.
31. the method according to claim 27 also comprises:
Control is flowed at entrance and the fluid between the secondary cooling module for the load separately that detects an out of order elementary refrigerating module; With
Control is flowed at outlet and the fluid between the secondary cooling module for the load separately that detects an out of order elementary refrigerating module.
32. a device comprises:
Refrigerating module, refrigerating module provide cold-producing medium to arrive load;
First controller that the first in the loop that is associated with refrigerating module is associated; With
Second controller that the second portion in the loop that is associated with refrigerating module is associated,
Wherein in first pattern, the first of the first controller control loop, and the second portion of the second controller control loop; And in second pattern, another part in the second portion in controller control first in first controller or second controller and the first in second portion or loop or loop.
33. according to the device of claim 32, wherein the first in loop comprises first pump and the second portion in loop comprises second pump.
34. according to the device of claim 33, wherein the first in loop comprises first valve and the second portion in loop comprises second valve, wherein first and second partial cooperatives are in order to control refrigerating module redundantly.
35. according to the device of claim 34, wherein first controller monitors at least one the state in second valve or second pump, and second controller monitors at least one the state in first valve or first pump.
36. according to the device of claim 34, wherein first controller monitors at least one the state in first valve or first pump, and second controller monitors at least one the state in second valve or second pump.
37. according to the device of claim 32, wherein first controller monitors at least one the state in first valve or first pump, and second controller monitors at least one the state in second valve or second pump.
38. according to the device of claim 32, wherein first controller and the second controller telecommunication.
39. the device according to claim 32, wherein when controller in first controller or second controller and another controller telecommunication in first controller and second controller, the parts of controller control refrigerating module in first controller or second controller, and the be under an embargo parts of control refrigerating module of another controller in first controller or second controller.
40. according to the device of claim 32, wherein first controller and the second controller telecommunication are in order to determine the specific part of which controller control cooling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423986.6A CN110160281A (en) | 2011-12-28 | 2012-12-27 | Pump refrigerant cooling system and built-in redundancy with l+1 to N+1 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161580695P | 2011-12-28 | 2011-12-28 | |
| US61/580,695 | 2011-12-28 | ||
| US13/723,986 | 2012-12-21 | ||
| US13/723,986 US9494371B2 (en) | 2011-12-28 | 2012-12-21 | Pumped refrigerant cooling system with 1+1 to N+1 and built-in redundancy |
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| CN201910423986.6A Division CN110160281A (en) | 2011-12-28 | 2012-12-27 | Pump refrigerant cooling system and built-in redundancy with l+1 to N+1 |
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| CN103185409A true CN103185409A (en) | 2013-07-03 |
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| CN201910423986.6A Pending CN110160281A (en) | 2011-12-28 | 2012-12-27 | Pump refrigerant cooling system and built-in redundancy with l+1 to N+1 |
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| CN110160281A (en) | 2019-08-23 |
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