CN205037078U - Air -sensitive type pipe flange gas leak detection device - Google Patents
Air -sensitive type pipe flange gas leak detection device Download PDFInfo
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- CN205037078U CN205037078U CN201520409904.XU CN201520409904U CN205037078U CN 205037078 U CN205037078 U CN 205037078U CN 201520409904 U CN201520409904 U CN 201520409904U CN 205037078 U CN205037078 U CN 205037078U
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Abstract
The utility model provides an air -sensitive type pipe flange gas leak detection device, it includes takes the flange gasket and the sensor module in air guide hole, sensor module includes gas sensor, signal pickup assembly and signal output device, gas sensor is provided with air inlet and gas outlet, gas sensor's air inlet passes through the air duct intercommunication extremely the air guide hole of flange gasket, signal pickup assembly connects gas sensor is in order to gather the change volume of leaking the gas strength, the signal output device is connected signal pickup assembly is with the basis the size that whether has gas leakage and spillage is judged to the change volume of leaking the gas strength. The utility model discloses a set up the air guide hole on the flange gasket to collect through the air duct of connecting the air guide hole and leak gaseously to gas sensor, can detect the gas leakage of gas transmission pipeline interface flange department, have that the practicality is strong, the function is perfect, a simple structure, advantage that factor of safety is high.
Description
Technical field
The utility model relates to a kind of gas leak detection apparatus, specifically, relate to a kind of gas-sensitive type piping flange gas leak detection apparatus that can detect gas pipeline flange place Leakage Gas.
Background technique
At petroleum refining enterprise, have that a large amount of conveyings is inflammable and explosive, the pipeline of toxic and harmful, due to duct length and caliber different, needing the pipeline section place of frequent dismounting and pipeline and the joining place of equipment, mostly adopt flange connect.Flange seal effect mainly makes flange gasket have enough sealing pressings by clamping bolt thus stops Leakage Gas, realizes sealing.
In gas transport process, the sealing of flange can be subject to various impacts, and these impacts mainly comprise: the bolt pretightening of flange connections is not enough or uneven; Pipeline pressure fluctuation or pipeline commissioning move and make the stressed change of connecting bolt; Pipe vibration makes connecting bolt loosen; The voltage withstand class of sealing material does not reach code requirement; The aging spring-back force of pad that causes of sealing material declines; The structure model selection of sealing gasket is improper.After these factors exist direct or indirect impact, particularly pipeline air-inlet to piping flange sealability, due to the impact of the factor such as pipeline commissioning, movement, flange connections is bolt strained to change unavoidably.If can not flange leakage problems be detected in time and take countermeasure, under the washing away of medium, meeting makes seepage expand rapidly, causes various loss.If poisonous and harmful, inflammable and explosive Leakage Gas, also likely cause the serious accidents such as personnel are poisoning, fire, blast.
For above-mentioned situation, due to existing pipeline gas Leak testtion employing is that pipeline is patrolled and examined, easily undetected to minute leakage point, therefore, needs to take more effective detecting method and device.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, thus provides a kind of practical, Perfect in shape and function, structure is simple, safety coefficient is high gas-sensitive type piping flange gas leak detection apparatus.
To achieve these goals, the technological scheme that the utility model adopts is: a kind of gas-sensitive type piping flange gas leak detection apparatus, it comprises flange gasket and the sensor module of band gas port, described sensor module comprises gas sensing member, signal pickup assembly and signal output apparatus, described gas sensing member is provided with suction port and air outlet, the suction port of described gas sensing member is communicated to the gas port of described flange gasket by air pipe, described signal pickup assembly connects described gas sensing member to gather the variable quantity of gas leakage air-sensitive, described signal output apparatus connects described signal pickup assembly to judge whether the size of Leakage Gas and leakage rate according to the variable quantity of described gas leakage air-sensitive.
Based on above-mentioned, described gas sensing member is semiconductor gas sensor, catalytic combustion sensor or electrochemical sensor.
Based on above-mentioned, described sensor module also comprise display device and for by data upload to the data unofficial biography device of master system, described display device is connected described signal output apparatus respectively with described data unofficial biography device.
The utility model hinge structure has substantive distinguishing features and progress, specifically, the utility model by arranging gas port on flange gasket, and the air pipe through connecting gas port collects gas leakage to gas sensing member, can detect the Leakage Gas at gas pipeline flange place, there is practical, Perfect in shape and function, structure is simple, safety coefficient is high advantage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model flange gasket.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of gas-sensitive type piping flange gas leak detection apparatus, it comprises flange gasket 1 and the sensor module of band gas port 11, described sensor module comprises gas sensing member 2, signal pickup assembly and signal output apparatus, described gas sensing member 2 is provided with suction port 21 and air outlet 22, the suction port 21 of described gas sensing member 2 is communicated to the gas port 11 of described flange gasket 1 by air pipe 3, the air outlet of described gas sensing member 2 is in communication with the outside, described signal pickup assembly connects described gas sensing member to gather the variable quantity of gas leakage concentration, described signal output apparatus connects described signal pickup assembly to judge whether the size of Leakage Gas and leakage rate according to the variable quantity of described gas leakage concentration.
In working procedure, when piping flange jointing has Leakage Gas, the gas leaked is collected into described gas sensing member 2 through the gas port 11 of described flange gasket 1 and air pipe 3, and namely the concentration of the gas using described gas sensing member 2 to detect be the leakage concentration of piping flange place gas.
According to the variable quantity of the gas leakage air-sensitive that described signal pickup assembly gathers, described signal output apparatus can judge whether the size of Leakage Gas and leakage rate, and specifically, the electrical signal that described signal pickup assembly collects, being generally size is V
1voltage signal, calculated the A/D conversion value of collection signal by formula (1), namely described signal output apparatus can calculate the concentration of current gas through the computer program of correspondence.
（1）
Wherein N is the figure place of A/D converter in signal pickup assembly, V
rEFfor the reference voltage of A/D converter.
When specifically selecting sensor, described gas sensing member can select semiconductor gas sensor, catalytic combustion sensor or electrochemical sensor.
In other embodiments, described sensor module also include display device and for by data upload to the data unofficial biography device of master system, described display device is connected described signal output apparatus respectively with described data unofficial biography device, described data unofficial biography device according to specific needs, adopt wireless or wired data transfer mode, thus make to look into and see if there is Leakage Gas in scene, can also remote centralized control be carried out.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope of the utility model request protection.
Claims (3)
1. a gas-sensitive type piping flange gas leak detection apparatus, it is characterized in that: it comprises flange gasket and the sensor module of band gas port, described sensor module comprises gas sensing member, signal pickup assembly and signal output apparatus, described gas sensing member is provided with suction port and air outlet, the suction port of described gas sensing member is communicated to the gas port of described flange gasket by air pipe, described signal pickup assembly connects described gas sensing member to gather the variable quantity of gas leakage concentration, described signal output apparatus connects described signal pickup assembly to judge whether the size of Leakage Gas and leakage rate according to the variable quantity of described gas leakage concentration.
2. gas-sensitive type piping flange gas leak detection apparatus according to claim 1, is characterized in that: described gas sensing member is semiconductor gas sensor, catalytic combustion sensor or electrochemical sensor.
3. gas-sensitive type piping flange gas leak detection apparatus according to claim 1 and 2, it is characterized in that: described sensor module also comprise display device and for by data upload to the data unofficial biography device of master system, described display device is connected described signal output apparatus respectively with described data unofficial biography device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520409904.XU CN205037078U (en) | 2015-06-15 | 2015-06-15 | Air -sensitive type pipe flange gas leak detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520409904.XU CN205037078U (en) | 2015-06-15 | 2015-06-15 | Air -sensitive type pipe flange gas leak detection device |
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| Publication Number | Publication Date |
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| CN205037078U true CN205037078U (en) | 2016-02-17 |
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| CN201520409904.XU Active CN205037078U (en) | 2015-06-15 | 2015-06-15 | Air -sensitive type pipe flange gas leak detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458568A (en) * | 2018-12-13 | 2019-03-12 | 上海因士环保科技有限公司 | A kind of VOCs leakage miniature monitor and on-line monitoring system |
-
2015
- 2015-06-15 CN CN201520409904.XU patent/CN205037078U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458568A (en) * | 2018-12-13 | 2019-03-12 | 上海因士环保科技有限公司 | A kind of VOCs leakage miniature monitor and on-line monitoring system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 Zhengzhou high tech Development Zone, Henan, Cedar Road, No. 169 Patentee after: Hanwei Technology Group Limited by Share Ltd Address before: 450001 Zhengzhou high tech Development Zone, Henan, Cedar Road, No. 169 Patentee before: Henan Hanwei Electronics Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |