CN2898815Y - Alarming system for inspecting fuel-oil leakage fibre-optical theory - Google Patents
Alarming system for inspecting fuel-oil leakage fibre-optical theory Download PDFInfo
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- CN2898815Y CN2898815Y CN 200620041877 CN200620041877U CN2898815Y CN 2898815 Y CN2898815 Y CN 2898815Y CN 200620041877 CN200620041877 CN 200620041877 CN 200620041877 U CN200620041877 U CN 200620041877U CN 2898815 Y CN2898815 Y CN 2898815Y
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Abstract
The utility model relates to combustible gas alarming field, in particular to an alarming system for inspecting fuel-oil leakage fibre-optical theory, which comprises a fiber optic sensor and a fire alarm control device, wherein, the fiber optic sensor comprises a fiber-optics probe, optical fibers, a luminotron, a receiving tube and a transmitter. The utility model is characterized in that the high polymer coating on the surface of the fiber-optics probe core segment will interact with the substances to be measured if the substance is fallen across, causing the refractive index of the high polymer to decrease until which is lower than the refractive index of the core segment, the light intensity detected at the shoot-out end of the optical fibers will increase, the variance of light intensity will increase or decrease based on the variance of the substances to be measured. By comparing the variance of the light intensity at the shoot-out end of the optical fibers, the alarming system can distinguish whether the substances to be measured is exists and the content of the substance. The utility model has the advantages of that the optical fiber sensor is arranged at the fuel leakage locale, the signals are transmitted to the fire alarm control device located at rear area through the 485 bus, thereby the status on the locale can right be known by the attending personnel by means of monitoring the fire alarm control device, the alarming system is easy to use with high reliability and speed of response.
Description
Technical field
The utility model belongs to the combustible gas alarm field, is specifically related to a kind of warning system that fuel leakage detects that is used for based on the optical fiber principle.
Background technology
Along with the development of human industrial society and the raising of people's living standard, artificial environmental disruption and cause environmental pollution also to be on the rise.When considering environmental pollution control measure, at first need a kind of technology that can test pollution level, so people are just grown to even greater heights also to the demand of various sensors.In the North America, states such as Europe especially attach great importance to the monitoring of groundwater contamination recently.Particularly ground and underground oil storage device have been taked strict monitoring measure gradually.When China continued the high speed economic development in 20 years, also day became the realistic problem of having to face by coming to the surface to problem of environmental pollution.For example, leakage such as the oils of the above and below ground storage tank of petroleum base, refinery, refuelling station etc. is to be in no monitored state basically.Therefore R and D are a kind of can be embedded in undergroundly, and the warning system that is used for detecting the detection that underground fuel leaks is those skilled in the art's a target.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, compact, volume is little, highly sensitive, reliability is high, with strong points, the warning system that fuel leakage detects that is used for that restorability is good based on the optical fiber principle.
A kind of warning system that fuel leakage detects that is used for that the utility model proposes based on the optical fiber principle, it is characterized in that forming by Fibre Optical Sensor 31 and fire alarming and control device 29, Fibre Optical Sensor 31 is connected to form by transmitter 15 and sensing head 16, sensing head 16 is by optical fiber, protection tube 2, flexible pipe 4, luminotron 12, receiving tube 14 is formed, the optical fiber structure that takes the shape of the letter U, form by fibre-optical probe 1 and Transmission Fibers 5 two parts, the two ends of optical fiber connect luminotron 12 and receiving tube 14 respectively, protection tube 2 is placed in outside the fibre-optical probe 1 of optical fiber bottom, flexible pipe 4 is placed in outside the Transmission Fibers 5, one end of flexible pipe 4 connects protection tube 2, and the other end connects transmitter 15; Transmitter 15 is made up of armored cassette 10 and the LCD panel 7, control panel 6, the terminal block 11 that are positioned at armored cassette, LCD panel 7 is provided with LCD MODULE 8 and button 9, terminal block 11 is provided with the jack of luminotron 12, receiving tube 14, LCD panel 7 connects control panel 6 by contact pin, and control panel 6 connects terminal block 11 by contact pin; Luminotron 12, receiving tube 14 are connected with luminotron 12, the jack of receiving tube 14 on the terminal block 11 by lead-in wire respectively; Fire alarming and control device 29 is connected to form through circuit by data processor 28, microcomputer 27 and printer 21, and an end of 485 buses 17 connects the terminal block 11 on the transmitter 15, and the other end connects the data processor 28 on the fire alarming and control device 29.
In the utility model, fibre-optical probe 1 outside surface scribbles polymer coating.
In the utility model, protection tube 2 adopts the aluminum protection tube, and protection tube 2 is provided with aperture 3.
In the utility model, 485 buses 17 are provided with several terminal boxes 32, each terminal box 32 connects Fibre Optical Sensor 31 respectively, makes a fire alarming and control device 29 can connect several Fibre Optical Sensors 31 simultaneously, and the number of Fibre Optical Sensor 31 is 1-500.
In the utility model, the data processor 28 of fire alarming and control device 29 connects LCDs 19, interlock indication information 20, fire alarm information 21, status indicator lamp 22, function manipulation key 23, the direct start and stop key 24 on fire alarming and control device 29 panels respectively.
In the utility model, the microcomputer 27 of fire alarming and control device passes through the 485-232 converting interface with the terminal block of Fibre Optical Sensor 31 11, adopts 485 buses 17 to connect.
In the utility model, terminal box 32 is an anti-explosion terminal box.
In the utility model, 485 buses, the 17 outer anti-explosion cables 18 that are with.
Principle of work is based on the fiber-optic probe principle in the utility model: under the non-existent situation of undetected object matter, because be coated in the refractive index height of refractive index ratio fiber core of the high polymer material on fiber core surface, so light will leak into the outside of optical fiber.Like this, the ejecting end of sensor can detected light intensity will be very low.But the superpolymer that is coated in the fiber core surface when running into test substance will interact with test substance, thereby the refractive index of superpolymer is descended until the refractive index that is lower than core.Therefore, at this moment the light by optical fiber will be enclosed in the optical fiber.So, will strengthen in the detected light intensity of the ejecting end of optical fiber, and, the variable quantity of light intensity at this moment will along with measured matter what and increase and decrease.By the relatively variation of the light intensity of optical fiber ejecting end, just can differentiate the existence that whether test substance is arranged and the size of amount, in the utility model by the receiving tube Signal Processing being analyzed the existence of differentiating fuel-steam and the amount of concentration.
The utility model can be used for detecting different gaseous species by changing the polymer coating of fibre-optical probe 1 outside surface, mainly contains hydrocarbons such as gasoline, diesel oil, alcohol, methane.
In the utility model, the transmitter shell adopts the armored cassette 10 with flame proof function, and luminotron 12 and optical fiber 5 parts are INCREASEDSAFETY, and whole transmitter is a blast resistance construction, and explosive-proof grade is Ex dII CT6.
In the utility model, Fibre Optical Sensor 31 also can break away from fire alarming and control device 29 and as stand alone type the scene be monitored in real time.
In the utility model, Fibre Optical Sensor is communicated by letter with fire alarming and control device 29 by 485 buses 17, and can hang a hundreds of Fibre Optical Sensor 32 on 485 buses 17 simultaneously and communicate by letter with fire alarming and control device 29, monitoring range is wide, also can communicate to connect distance by increasing by 33 increases of 485 interrupters.Last Fibre Optical Sensor 32 that bus is hung needs to add a terminal resistance 13.
In the utility model, fire alarming and control device 29 can be selected general fire-alarm for use, preferable can select the SA4050 fire-alarm that is provided with LCDs 19, interlock indication information 20, fire alarm information 21, status indicator lamp 22, function manipulation key 23, direct start and stop key 24 on processor 28 panels for use, and these parts are connected with processor 28 chips respectively.
During the utility model work, Fibre Optical Sensor is placed petroleum base, refinery, the above and below ground storage tank of refuelling station etc., and the Fibre Optical Sensor of configurable respective numbers according to actual needs, the scene is monitored in real time, when underground oil vapour leaks, oil vapour infiltrates through the protection tube that is drilled with aperture and contacts with fibre-optical probe, the superpolymer and this oil vapour that are coated in the fiber core surface interact, thereby the refractive index of superpolymer is descended, until the refractive index that is lower than fiber core, at this moment the light by optical fiber will be enclosed in the optical fiber, detected light intensity will strengthen on the ejecting end receiving tube of optical fiber, by with transmitter that receiving tube links to each other on terminal block, this signal is passed to control panel, control panel passes to the rear fire alarming and control device to signal by 485 buses that are connected on the terminal block after this signal Processing, 485 buses are being wrapped by anti-explosion cable, fire alarming and control device passes the signal of coming according to the place ahead, shows the duty of each Fibre Optical Sensor on liquid crystal panel in real time; Also can press the key assignments alarming value by three on the Fibre Optical Sensor LCD panel, when leaking gas concentration above alarm setting value, the rear fire alarming and control device sends sound and light alarm, and output switching value signal, in time closes measures such as gas leak control valve, startup vent fan.The technician can observe fire alarming and control device in the wings and understand on-the-spot information in real time, and takes relative counter measures according to actual conditions, avoids causing because of oil and gas leakage the generation of disaster accident.
The utlity model has with strong points, reliability height, compact conformation, time response piece, restorability is good, can leak the above and below ground storage tank oils that petroleum base, refinery, refuelling station etc. have an explosion danger to survey fast and accurately.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model structure of transmitter synoptic diagram.
Fig. 3 is the fibre-optical probe structural representation.
Fig. 4 is the utility model fire alarming and control device panel synoptic diagram.
Fig. 5 is the utility model system architecture synoptic diagram.
Number in the figure: 1 is fibre-optical probe, and 2 is protection tube, and 3 is aperture; 4 is plastic flexible pipe, and 5 is optical fiber, and 6 is control panel; 7 is LCD panel, and 8 is LCD MODULE, and 9 is button; 10 is armored cassette, and 11 is terminal block, and 12 is luminotron; 13 is terminal resistance, and 14 is receiving tube, and 15 is sensing head; 16 is transmitter, and 17 is 485 buses, and 18 is anti-explosion cable; 19 is LCDs, and 20 are the interlock indication information, and 21 is fire alarm information; 22 is status indicator lamp, and 23 is function manipulation key, and 24 is direct start and stop key; 25 is operating key, and 26 is printer, and 27 is microcomputer; 28 is data processor; 29 is fire alarming and control device, and 30 is the 24V fire-fighting power supply, and 31 is Fibre Optical Sensor; 32 is terminal box, and 33 is 485 interrupters.
Embodiment
Further specify the utility model below by embodiment.
Embodiment 1, and following parts are connected by Fig. 1-mode shown in Figure 5, and these those skilled in the art all can finish the enforcement of the utility model device smoothly.Optical fiber is made up of fibre-optical probe 1 and Transmission Fibers 5, the Transmission Fibers 5 outer plastic flexible pipes 4 that are with, fibre-optical probe 1 scribbles polymer coating, polymer coating adopts a kind of special phenolics polymkeric substance, after it touches hydrocarbon, alcohols equimolecular, will produce as the alteration of form that expands, and the degree of expansion is with the concentration change of these molecules, thereby the refractive index of this material is changed.Be provided with aluminum protection tube 2 outside the fibre-optical probe 1, be drilled with aperture 3 on the protection tube 2, protection tube 2 closely is connected with plastic flexible pipe 4; One end of optical fiber connects luminotron 12, the other end connects receiving tube 14, luminotron 12 models are LSF811E2, receiving tube 14 models are HPI-6FH, adopt connector to be connected between optical fiber and luminotron 12 and the receiving tube 14, make its contact end face smooth, smooth, and optical fiber just in time contact no extruding force with luminotron 12 with receiving tube 14; Transmitter 15 is by armored cassette 10 and the LCD panel 7 that is positioned at armored cassette, control panel 6,11 3 circuit boards of terminal block are formed, the armored cassette model is BP37, three circuit boards lay respectively at the upper end of armored cassette 10, middle-end and bottom, the upper end is a LCD panel 7, middle-end is a control panel 6, the bottom is a terminal block 11, LCD panel 7 is provided with LCD MODULE 8 and three buttons 9, the model of LCD MODULE 8 is SMS0401, can show that the gas concentration scope is 0～100%LEL, three buttons 9 are respectively function key, increase key, reduce key, can select different displaying contents (LEL or mV sampled value or alarm settings) by function key, increase key and reduce the size that key is used for regulating alarm setting value.Terminal block 11 is provided with the connecting hole of luminotron 12 and receiving tube 14, and luminotron 12 is connected on the terminal block 11 by lead-in wire respectively with receiving tube 14 and connects accordingly.Fire alarming and control device adopts SA4050 type fire alarming and control device, and the data processing and control chip is positioned at the SA4050 fire alarming and control device, and all are controlled all by the key operation on the SA4050 fire alarming and control device panel.SA4050 fire alarming and control device panel is made up of LCDs 19, interlock indication information 20, fire alarm information 21, status indicator lamp 22, function manipulation key 23, direct start and stop key 24, operating key 25, printer 26 etc.Fibre Optical Sensor 31 is connected by 485 buses 17 with alarm control unit 29, can connect a plurality of Fibre Optical Sensors 31 by terminal box 32.
Claims (8)
1, a kind of warning system that fuel leakage detects that is used for based on the optical fiber principle, it is characterized in that forming by Fibre Optical Sensor (31) and fire alarming and control device (29), Fibre Optical Sensor (31) is connected to form by transmitter (15) and sensing head (16), sensing head (16) is by optical fiber, protection tube (2), flexible pipe (4), luminotron (12), receiving tube (14) is formed, the optical fiber structure that takes the shape of the letter U, form by fibre-optical probe (1) and Transmission Fibers (5) two parts, the two ends of optical fiber connect luminotron (12) and receiving tube (14) respectively, protection tube (2) is placed in outside the fibre-optical probe (1) of optical fiber bottom, flexible pipe (4) is placed in outside the Transmission Fibers (5), one end of flexible pipe (4) connects protection tube (2), and the other end connects transmitter (15); Transmitter (15) is made up of armored cassette (10) and the LCD panel (7), control panel (6), the terminal block (11) that are positioned at armored cassette, LCD panel (7) is provided with LCD MODULE (8) and button (9), terminal block (11) is provided with the jack of luminotron (12), receiving tube (14), LCD panel (7) connects control panel (6) by contact pin, and control panel (6) connects terminal block (11) by contact pin; Luminotron (12), receiving tube (14) are connected with luminotron (12), the jack of receiving tube (14) on the terminal block (11) by lead-in wire respectively; Fire alarming and control device (29) is connected to form through circuit by data processor (28), microcomputer (27) and printer (21), one end of 485 buses (17) connects the terminal block (11) on the transmitter (15), and the other end connects the data processor (28) on the fire alarming and control device (29).
2, the warning system that fuel leakage detects that is used for based on the optical fiber principle according to claim 1 is characterized in that fibre-optical probe (1) outside surface scribbles polymer coating.
3, the warning system that fuel leakage detects that is used for based on the optical fiber principle according to claim 1 is characterized in that protection tube (2) adopts the aluminum protection tube, and protection tube (2) is provided with aperture (3).
4, the warning system that fuel leakage detects that is used for based on the optical fiber principle according to claim 1, it is characterized in that 485 buses (17) are provided with several terminal boxes (32), each terminal box (32) connects Fibre Optical Sensor (31) respectively, make fire alarming and control device (29) connect several Fibre Optical Sensors (31) simultaneously, the number of Fibre Optical Sensor (31) is 1-500.
5, the warning system that fuel leakage detects that is used for based on the optical fiber principle according to claim 1 is characterized in that data processor (28) connects LCDs (19), interlock indication information (20), fire alarm information (21), status indicator lamp (22), function manipulation key (23), the direct start and stop key (24) on fire alarming and control device (29) panel respectively.
6, the warning system that fuel leakage detects that is used for based on the optical fiber principle according to claim 1, it is characterized in that the microcomputer (27) of fire alarming and control device and the terminal block (11) of Fibre Optical Sensor pass through the 485-232 converting interface, adopt 485 buses (17) to connect.
7, the warning system that fuel leakage detects that is used for based on the optical fiber principle according to claim 1 is characterized in that terminal box (32) is anti-explosion terminal box.
8, the warning system that fuel leakage detects that is used for based on the optical fiber principle according to claim 1 is characterized in that the outer anti-explosion cable (18) that is with of 485 buses (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620041877 CN2898815Y (en) | 2006-05-18 | 2006-05-18 | Alarming system for inspecting fuel-oil leakage fibre-optical theory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620041877 CN2898815Y (en) | 2006-05-18 | 2006-05-18 | Alarming system for inspecting fuel-oil leakage fibre-optical theory |
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| Publication Number | Publication Date |
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| CN2898815Y true CN2898815Y (en) | 2007-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620041877 Expired - Fee Related CN2898815Y (en) | 2006-05-18 | 2006-05-18 | Alarming system for inspecting fuel-oil leakage fibre-optical theory |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8528385B2 (en) | 2010-12-30 | 2013-09-10 | Eaton Corporation | Leak detection system |
| US9291521B2 (en) | 2010-12-30 | 2016-03-22 | Eaton Corporation | Leak detection system |
| CN110310465A (en) * | 2019-06-17 | 2019-10-08 | 深圳晶点光科有限公司 | A kind of band light splitting optical fiber does the optical fiber manual fire alarm call point of signal designation |
| CN110641853A (en) * | 2019-09-26 | 2020-01-03 | 扬州工业职业技术学院 | Leakage early warning device for dangerous chemical transportation and use method thereof |
| CN113654746A (en) * | 2021-07-27 | 2021-11-16 | 西安和其光电科技股份有限公司 | Optical fiber-based test system, oil bag leakage detection method and medium type identification method |
-
2006
- 2006-05-18 CN CN 200620041877 patent/CN2898815Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8528385B2 (en) | 2010-12-30 | 2013-09-10 | Eaton Corporation | Leak detection system |
| US9291521B2 (en) | 2010-12-30 | 2016-03-22 | Eaton Corporation | Leak detection system |
| US9897508B2 (en) | 2010-12-30 | 2018-02-20 | Eaton Corporation | Leak detection system |
| CN110310465A (en) * | 2019-06-17 | 2019-10-08 | 深圳晶点光科有限公司 | A kind of band light splitting optical fiber does the optical fiber manual fire alarm call point of signal designation |
| CN110310465B (en) * | 2019-06-17 | 2024-04-19 | 浙江东方职业技术学院 | Optical fiber manual fire alarm button with light splitting optical fiber as signal indication |
| CN110641853A (en) * | 2019-09-26 | 2020-01-03 | 扬州工业职业技术学院 | Leakage early warning device for dangerous chemical transportation and use method thereof |
| CN110641853B (en) * | 2019-09-26 | 2021-06-22 | 扬州工业职业技术学院 | Leakage early warning device for dangerous chemical transportation and use method thereof |
| CN113654746A (en) * | 2021-07-27 | 2021-11-16 | 西安和其光电科技股份有限公司 | Optical fiber-based test system, oil bag leakage detection method and medium type identification method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070509 Termination date: 20130518 |