WO2011122988A1 - Fixed-gate valve - Google Patents
Fixed-gate valve Download PDFInfo
- Publication number
- WO2011122988A1 WO2011122988A1 PCT/RU2011/000169 RU2011000169W WO2011122988A1 WO 2011122988 A1 WO2011122988 A1 WO 2011122988A1 RU 2011000169 W RU2011000169 W RU 2011000169W WO 2011122988 A1 WO2011122988 A1 WO 2011122988A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- gate
- elastic element
- cover
- saddle
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0493—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a spring other than a helicoidal spring
Definitions
- This technical solution relates to machine units and parts providing for the normal operation of the machines, more specifically, to valves, preferably, providing for the passage of gas or liquid flows, and can be used in any field of science and technology where controlled transfer of liquid or gas flows is used, for example, in gas, petrochemical and chemical industries.
- valve device (DE Patent Application 4023845 F 16 K 51/00, 1999) comprising a case with a spring-loaded valve gate and a pneumatic actuator in the form of two pistons installed in sequence.
- Disadvantage of said device is the impossibility of its use in pneumatic systems having a backup control pressure release system for the opening of the flow passage because the bottom piston of said valve can only be moved after preliminary opening of the valve gate.
- valve device (RU Patent 2066010 F 16 K 17/06, 1996) comprising a case with an input and an output ports and at least two valve gates installed in its channels, said valve gates being loaded in the direction towards the valve saddle by means of springs installed coaxially with said channels.
- Said input and output ports are arranged coaxially and normally to said channels, and said springs are installed in cylindrical openings in the valve case, said openings being connected to said input port when the valve is open and to said output port when the valve is closed.
- a valve switching device (RU Patent 2217639 F 16 K 17/00, 2005) comprising a case with a working body installed inside said case, wherein said working body (the valve) is mounted on a mobile rod installed in one of the ports, and the side walls of the valve case have control pressure line sections connected to said working body, branch lines with safety valves installed at their ends and a gas media supply line.
- Said rod can be tubular.
- the ratio between the smallest inner diameter of its case and the largest diameter of the rod is within 500.
- Said known device operates as follows.
- Gas is supplied via the high pressure line.
- one of the safety valves is activated, and high pressure gas is released to one of the low pressure lines.
- the high pressure line should be switched to the second safety valve. This is achieved by moving the working body (the valve on the rod) to the left-hand position.
- the pressures in the case cavities and in the branch lines on the case should be equalized by feeding high pressure via the gas media supply line to the cavity under the second safety valve. Then the pressure is released via the control pressure line, and the working body is moved to the left-hand position.
- valve switching device Disadvantage of said valve switching device is the insufficiently tight contact between the valve and the saddle which entails insufficient leakproofness of the cavity of said valve switching device.
- the object of this work is to develop a high reliability valve device providing for a tight contact between the valve and the saddle and hence a higher leakproofness of the cavities of the valve device. It is suggested to achieve said technical result using the valve design developed herein.
- the fixed-gate valve used for the production of fluid mineral resources comprises a saddle, a gate, a elastic element with an opening in its central part, a cover and a pin with a head, wherein said elastic element is installed between said gate and said cover, and the gate has a blind opening at the side of the cover for the installation of said pin with a head.
- Said elastic element is preferably spring-loaded or dish-shaped with windows for media passage.
- the contact surface of said saddle can be conical, spherical, planar or a combination of the above shapes.
- the contact surface of the valve gate can also be conical, spherical, planar or a combination of the above shapes.
- Said elastic element can be made from one or more plates or one or more lobes.
- the outer surface of the pin head can be planar, spherical or rounded.
- said valve gate can be stopped in the open position either by setting the pin head against the cover, or by means of the spring- loaded plates, or by setting the valve gate against the spring-loaded plates, or by means of any combination of the above effects.
- the contact surface between said gate and said elastic element can be conical, spherical or rounded.
- the valve gate can be stopped in the closed position by pressure from said elastic element.
- the plane of said elastic element can be at up to 90° to the valve axis.
- said elastic element can be fixed to the cover or to the valve saddle or pressed between the cover and the valve saddle.
- the cover can be fixed to the valve saddle by means of additional pins with heads.
- the valve is fixed to other downhole equipment units via its saddle.
- the design of the valve developed herein will now be illustrated by means of Fig. 1 (open position) and Fig. 2 (closed position) wherein the following notations are used: saddle (1), gate (2), elastic element (3), cover (4) and pin (5) with head.
- the valve In the normal condition, the valve can be in either open or closed position.
- the valve can be switched by pressure difference or a change in flow direction.
- the valve switching limit (opening or closure) can be controlled by adjusting the stiffness of the spring.
- valve of the design developed herein with some modifications can be used in passive downhole flow direction control systems in different operation modes, e.g. during downhole equipment installation, oil production, formation hydrofracturing, well flushing etc..
Abstract
This technical solution relates to valves providing for the passage of gas or liquid flows, and can be used in any field of science and technology where controlled transfer of liquid or gas flows is used, for example, in gas, petrochemical and chemical industries.
Description
Fixed-Gate Valve
This technical solution relates to machine units and parts providing for the normal operation of the machines, more specifically, to valves, preferably, providing for the passage of gas or liquid flows, and can be used in any field of science and technology where controlled transfer of liquid or gas flows is used, for example, in gas, petrochemical and chemical industries.
Known is a valve device (DE Patent Application 4023845 F 16 K 51/00, 1999) comprising a case with a spring-loaded valve gate and a pneumatic actuator in the form of two pistons installed in sequence.
Disadvantage of said device is the impossibility of its use in pneumatic systems having a backup control pressure release system for the opening of the flow passage because the bottom piston of said valve can only be moved after preliminary opening of the valve gate.
Known is a valve device (RU Patent 2066010 F 16 K 17/06, 1996) comprising a case with an input and an output ports and at least two valve gates installed in its channels, said valve gates being loaded in the direction towards the valve saddle by means of springs installed coaxially with said channels. Said input and output ports are arranged coaxially and normally to said channels, and said springs are installed in cylindrical openings in the valve case, said openings being connected to said input port when the valve is open and to said output port when the valve is closed.
Disadvantage of said device is the complexity of its design which reduces its reliability in operation.
Known is a valve switching device (RU Patent 2217639 F 16 K 17/00, 2005) comprising a case with a working body installed inside said case, wherein said working body (the valve) is mounted on a mobile rod installed in one of the ports, and the side walls of the valve case have control pressure line sections connected to said working body, branch lines with safety valves installed at their ends and a gas media supply line. Said rod can be tubular. In the optimum embodiment the ratio between the smallest inner diameter of its case and the largest diameter of the rod is within 500.
Said known device operates as follows.
Gas is supplied via the high pressure line. When the gas pressure in the line exceeds the normal pressure, one of the safety valves is activated, and high pressure gas is released to one of the low pressure lines. After safety valve activation the high pressure line should be switched to the second safety valve. This is achieved by moving the working body (the valve on the rod) to the left-hand position. Preliminarily, the pressures in the case cavities and in the branch lines on the case should be equalized by feeding high pressure via the gas media supply line to the cavity under the second safety valve. Then the pressure is released via the control pressure line, and the working body is moved to the left-hand position.
Disadvantage of said valve switching device is the insufficiently tight contact between the valve and the saddle which entails insufficient leakproofness of the cavity of said valve switching device.
The object of this work is to develop a high reliability valve device providing for a tight contact between the valve and the saddle and hence a higher leakproofness of the cavities of the valve device.
It is suggested to achieve said technical result using the valve design developed herein. The fixed-gate valve used for the production of fluid mineral resources comprises a saddle, a gate, a elastic element with an opening in its central part, a cover and a pin with a head, wherein said elastic element is installed between said gate and said cover, and the gate has a blind opening at the side of the cover for the installation of said pin with a head. Said elastic element is preferably spring-loaded or dish-shaped with windows for media passage. The contact surface of said saddle can be conical, spherical, planar or a combination of the above shapes. Accordingly, the contact surface of the valve gate can also be conical, spherical, planar or a combination of the above shapes. Said elastic element can be made from one or more plates or one or more lobes. The outer surface of the pin head can be planar, spherical or rounded. In one of the embodiments, said valve gate can be stopped in the open position either by setting the pin head against the cover, or by means of the spring- loaded plates, or by setting the valve gate against the spring-loaded plates, or by means of any combination of the above effects. The contact surface between said gate and said elastic element can be conical, spherical or rounded. The valve gate can be stopped in the closed position by pressure from said elastic element. The plane of said elastic element can be at up to 90° to the valve axis. In some embodiments, said elastic element can be fixed to the cover or to the valve saddle or pressed between the cover and the valve saddle. In some embodiments, the cover can be fixed to the valve saddle by means of additional pins with heads. Preferably, the valve is fixed to other downhole equipment units via its saddle.
The design of the valve developed herein will now be illustrated by means of Fig. 1 (open position) and Fig. 2 (closed position) wherein the following notations are used: saddle (1), gate (2), elastic element (3), cover (4) and pin (5) with head. In the normal condition, the valve can be in either open or closed position. The valve can be switched by pressure difference or a change in flow direction. The valve switching limit (opening or closure) can be controlled by adjusting the stiffness of the spring.
The valve of the design developed herein with some modifications can be used in passive downhole flow direction control systems in different operation modes, e.g. during downhole equipment installation, oil production, formation hydrofracturing, well flushing etc..
During downhole filter installation, the friction between the filter and the well walls is reduced by filling the inner tube of the filter with air. The resultant buoyancy of the filter causes it to float over the downhole liquid flow outside the filter thus reducing the overall effort required for lowering the downhole equipment the length of which may exceed one kilometer. To achieve this operation mode, it is required to close the channels through which liquid mineral resources normally pass from the oil reservoir to the filter tube. The valve design developed herein provides for such closure when required. To open the valve and allow oil inflow from the borehole environment to the filter tube, it is sufficient to lower the downhole pressure to below the reservoir pressure. The resultant pressure difference will switch the valve to the fixed open position to allow the passage of liquid mineral resources to the ground.
Claims
1. Fixed-gate valve used for the production of liquid mineral resources comprises a saddle, a gate, a elastic element with an opening in its central part, a cover and a pin with a head, wherein said elastic element is installed between said gate and said cover, and the gate has a blind opening at the side of the cover for the installation of said pin with a head.
2. Valve of Claim 1 wherein said elastic element is spring-loaded.
3. Valve of Claim 1 wherein said elastic element is dish-shaped with windows for media passage.
4. Valve of Claim 1 wherein the contact surface of said saddle is conical, spherical, planar or a combination of the above shapes.
5. Valve of Claim 1 wherein the contact surface of the valve gate is conical, spherical, planar or a combination of the above shapes.
6. Valve of Claim 1 wherein said elastic element is made from one or more plates or one or more lobes.
7. Valve of Claim 1 wherein the outer surface of the pin head is planar, spherical or rounded.
8. Valve of Claim 1 wherein said valve gate is stopped in the open position either by setting the pin head against the cover, or by means of the spring-loaded plates, or by setting the valve gate against the spring-loaded plates, or by means of any combination of the above effects.
9. Valve of Claim 1 wherein the contact surface between said gate and said elastic element is conical, spherical or rounded.
10. Valve of Claim 1 wherein the valve gate is stopped in the closed position by pressure from said elastic element.
1 1. Valve of Claim 1 wherein the plane of said elastic element is at up to 90° to the valve axis.
12. Valve of Claim 1 wherein said elastic element is fixed to the cover or to the valve saddle.
13. Valve of Claim 1 wherein said elastic element is pressed between the cover and the valve saddle.
14. Valve of Claim 1 wherein the cover is fixed to the valve saddle by means of additional pins with heads.
15. Valve of Claim 1 wherein the valve is fixed at its installation point via its saddle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2010112338 | 2010-03-31 | ||
| RU2010112338 | 2010-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011122988A1 true WO2011122988A1 (en) | 2011-10-06 |
Family
ID=44712451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2011/000169 WO2011122988A1 (en) | 2010-03-31 | 2011-03-18 | Fixed-gate valve |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2011122988A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR883752A (en) * | 1942-07-03 | 1943-07-16 | Non-return safety device for devices using mixtures of explosive fluids | |
| US3105507A (en) * | 1961-11-13 | 1963-10-01 | Dunmire Hannah | Fluid relief valve |
| US5865423A (en) * | 1997-07-11 | 1999-02-02 | Parker Intangibles, Inc. | High flow diaphragm valve |
-
2011
- 2011-03-18 WO PCT/RU2011/000169 patent/WO2011122988A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR883752A (en) * | 1942-07-03 | 1943-07-16 | Non-return safety device for devices using mixtures of explosive fluids | |
| US3105507A (en) * | 1961-11-13 | 1963-10-01 | Dunmire Hannah | Fluid relief valve |
| US5865423A (en) * | 1997-07-11 | 1999-02-02 | Parker Intangibles, Inc. | High flow diaphragm valve |
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