CN107131429B - Underground gas pipeline leak detection system and underground gas pipeline leak hunting method - Google Patents
Underground gas pipeline leak detection system and underground gas pipeline leak hunting method Download PDFInfo
- Publication number
- CN107131429B CN107131429B CN201710560878.4A CN201710560878A CN107131429B CN 107131429 B CN107131429 B CN 107131429B CN 201710560878 A CN201710560878 A CN 201710560878A CN 107131429 B CN107131429 B CN 107131429B
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- Prior art keywords
- gas pipeline
- leakage
- valve well
- signal
- valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of underground gas pipeline leak detection systems, comprising: leakage fuel gas transmission part, for receiving the combustion gas of fuel gas pipeline leakage, and will be in the valve well of the fuel gas transmission of fuel gas pipeline leakage to underground gas pipeline；Detector is set in valve well, the combustion gas of the valve leaks in combustion gas and valve well for detecting fuel gas conduit leakage；Signal transmitting apparatus is communicated to connect with detector, for receiving the signal from detector, and by the signal unofficial biography；Monitoring center is analyzed for receiving the signal from signal transmitting apparatus, and by the signal received, so that the operation to gas pipeline is monitored.The underground gas pipeline leak detection system is capable of the leak case of timely and effective discovery Underground pipe network, quickly and accurately lock gas leakage well section, the even specific location of leakage, so that the time has been reserved in the carry out emergency processing for operating personnel, it is therefore prevented that the generation of safety accident.The present invention also provides a kind of underground gas pipeline leak hunting methods.
Description
Technical field
The present invention relates to Underground pipe network leak detection equipment technical fields more particularly to a kind of underground gas pipeline to examine
Leakage system and underground gas pipeline leak hunting method.
Background technique
Underground piping in city is criss-cross, provides the various energy, the referred to as " life in city for resident and enterprise
Line ".
Gas pipeline provides a kind of natural, clean fuel for resident in underground pipe network, and gas pipeline is old with pipeline
The reasons such as change, pipeline junction corrosion, all may cause gas leakage, especially in valve well, underground valve pit is one close
The confined space closed, the facilities such as burnt gas valve well interior conduit, valve pass through long-play, under stuffy, wet environment, hold
Easily gather combustion gas.Combustion gas runs up to certain volume score, reaches the condition that the explosion ratio limit is 5%-15%, meets ignition source just
It is likely to occur gas explosion accident, can all cause serious casualties and property losses after pipe explosion.Then fuel gas conduit
The leak detection in road becomes the problem of social concerns, and leak detection technology is timely and effectively reacted to operator, avoids explosion thing
Therefore generation, be technology urgently to be resolved at present.
Summary of the invention
Have in view of that, the present invention, which provides one kind, can quickly and accurately lock gas leakage well section, or even reveal specific
Position, so that the carry out emergency processing for operating personnel is set aside some time, it is therefore prevented that the underground gas pipeline of the generation of safety accident
Leak detection system and underground gas pipeline leak hunting method, to solve problems of the prior art.
According to the first aspect of the invention, a kind of underground gas pipeline leak detection system is provided, comprising:
Fuel gas transmission part is revealed, for receiving the combustion gas of the fuel gas pipeline leakage, and by the fuel gas pipeline leakage
In fuel gas transmission to the valve well of the underground gas pipeline；
Detector is set in the valve well, in combustion gas and the valve well for detecting the fuel gas conduit leakage
Valve leaks combustion gas；
Signal transmitting apparatus is communicated to connect with the detector, for receiving the signal from the detector, and should
Signal unofficial biography；
Monitoring center is analyzed for receiving the signal from the signal transmitting apparatus, and by the signal received,
To be monitored to the operation of gas pipeline.
Preferably, the leakage fuel gas transmission part is porous screen casing, and the porous screen casing is set to the upper of gas pipeline
Side is simultaneously arranged against the gas pipeline, and the both ends of the porous screen casing extend respectively to disconnect at two adjacent valve wells,
To receive the combustion gas revealed on the fuel gas pipeline between two valve wells and be transmitted at the valve well.
Preferably, the monitoring center includes signal receiving device and host computer communicatively connected to each other, and the signal connects
Receiving apparatus is used to receive the signal of the signal transmitting apparatus, and the host computer is for receiving from the signal receiving device
Signal is simultaneously handled signal.
Preferably, further include power supply unit, the power supply unit respectively with the detector and the signal transmitting apparatus
Electrical connection, for providing electric energy for the detector and the signal transmitting apparatus.
Preferably, the power supply unit is solar panels.
Preferably, the detector is set on the inner wall at the well head of the valve well.
Preferably, the bottom wall of the valve well is equipped with plash, and the plash is located at the lower part of pipeline, for collecting
Ponding in valve well.
Preferably, the signal transmitting apparatus is wireless signal transmission.
According to the second aspect of the invention, a kind of underground gas pipeline leak hunting method is provided, comprising:
Detection is set to the leakage combustion at the first valve well and the second valve adjacent to each other on underground gas pipeline respectively
Gas；
The leakage position of combustion gas is determined according to the testing result of first valve well and the second valve well.
Preferably, the leakage position that combustion gas is determined according to the testing result of first valve well and the second valve well
It sets, comprising:
If successively detecting leakage combustion gas at first valve well and at the second valve well, first valve is determined
It is revealed at gas pipeline between well and the second valve well；
If first there is a valve well to detect leakage combustion gas at first valve well and at the second valve well, and another
Valve well not yet detects leakage combustion gas after preset time, then determines that this is detected and let out at the valve well of leakage combustion gas
Dew.
Underground gas pipeline leak detection system provided by the invention, laying is simple, and equipment is easy for installation, convenient for safeguarding, cost
It is lower, round-the-clock real time monitoring can be carried out to the operation of gas ductwork.The underground gas pipeline leak detection system can be timely
The effectively leak case of discovery Underground pipe network quickly and accurately locks gas leakage well section, or even the specific location of leakage,
To reserve the time for the carry out emergency processing of operating personnel, it is therefore prevented that the generation of safety accident.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 shows the functional block diagram of underground gas pipeline leak detection system according to an embodiment of the present invention.
Fig. 2 shows the structural schematic diagrams of underground gas pipeline leak detection system according to an embodiment of the present invention.
Fig. 3 shows a kind of leakage fuel gas transmission part of preferred embodiment.
Fig. 4 shows the flow chart of underground gas pipeline leak hunting method according to an embodiment of the present invention.
In figure: leakage fuel gas transmission part 1, suit portion 11, sieve pore 12, detector 2, signal transmitting apparatus 3, monitoring center 4,
Signal receiving device 41, host computer 42, the first valve well 51, the second valve well 52, well lid 501, plash 503, power supply unit
61, bracket 62, cable 63, gas pipeline 7, stratum 100.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.
As shown in Figs. 1-2, the present invention provides a kind of underground gas pipeline leak detection system, including leakage fuel gas transmission part 1, inspection
Survey instrument 2, signal transmitting apparatus 3 and monitoring center 4.Wherein, fuel gas transmission part 1 is revealed, for receiving the combustion of the leakage of gas pipeline 7
Gas, and in the fuel gas transmission that gas pipeline 7 is leaked to the valve well of underground gas pipeline 7；Detector 2 is set in valve well,
The combustion gas of the valve leaks in combustion gas and valve well for detecting fuel gas conduit leakage；Signal transmitting apparatus 3 and detector 2 are logical
Letter connection, for receiving the signal from detector 2, and by the signal unofficial biography；Monitoring center 4 is transmitted for receiving from signal
The signal of device 3, and the signal received is analyzed, to be monitored to the operation of gas pipeline 7.
Gas pipeline 7 is embedded in stratum 100, and the first valve well 51 and second adjacent to each other is offered on stratum 100
The depth of valve well 52, the first valve well 51 and the second valve well 52 is greater than the depth of burying of gas pipeline 7.First valve well 51
Maintenance and maintenance with the second valve well 52 for valve and instrument etc..Each valve well head is equipped with well lid 501.Each valve
The bottom wall of door well is equipped with plash 503, and plash 503 is located at the lower part of pipeline, for collecting the ponding in valve well.The reality
It applies in example, the bottom wall of each valve well is incline structure, and plash 503 is set to the side of bottom wall, and is located at minimum depression.Valve
Facilitate maintenance personal using pumping water first in inflow catch pit if any water in well, also function to the guarantor to pipeline and detection device
The effect of shield.
Leakage fuel gas transmission part 1 is porous screen casing, and porous screen casing is set to the top of gas pipeline 7 and abuts fuel gas conduit
Road 7 is arranged, and the both ends of porous screen casing extend respectively to disconnect at two adjacent valve wells, comes from two valve wells to receive
Between fuel gas pipeline on the combustion gas revealed and be transmitted at valve well.The porous screen casing is chosen as pvc pipe, such as diameter is φ
15 pvc pipe, or other materials, select non-ignitable material hard pipeline.
Fig. 3 shows a kind of leakage fuel gas transmission part 1 of preferred embodiment.As shown in figure 3, the leakage fuel gas transmission part
1 is tubular structure, which is provided with the portion of suiting 11, and leakage fuel gas transmission part 1 is suited portion 11 and suited with gas pipeline 7.This suits
Sieve pore 12 is offered in portion 11, for being connected to gas pipeline 7.Suit the geomery in portion 11 and the shape ruler of gas pipeline 7
Very little matching enables this to suit portion 11 and 7 tight fits of gas pipeline.More preferably, sealing material can be set in the portion that suits 11
Expect (not shown), such as seal rubber material, so that leakage fuel gas transmission part 1 is pressed on gas pipeline 7 after embedded, lets out
Reveal connected relation closed between fuel gas transmission part 1 and sealing pipeline, be more conducive to the transmission and signal acquisition of leakage combustion gas,
Improve feedback accuracy.When the leakage fuel gas transmission part 1 is installed, it is set to the top of gas pipeline 7, and it is made to suit portion 11
Suit on the upper periphery wall of gas pipeline 7, the both ends of leakage fuel gas transmission part 1 extend respectively to two adjacent valve wells
Place disconnects, and after leakage fuel gas transmission part 1 buries in fact in soil layer, realizes under the pressure of soil layer with gas pipeline 7 and closely cuts
It closes.When, there are when leakage point, leakage point is connected to through sieve pore 12 with the inner cavity of the leakage fuel gas transmission part 1, this is interior on gas pipeline 7
Chamber is connected to valve well.
Detector 2 is set on the inner wall at the well head of each valve well, on the one hand convenient for the acquisition of leakage combustion gas signal, separately
On the one hand it prevents by valve well inner product Water Damage.In the embodiment, detector 2 is specifically selected as methane concentration detector 2, output
The signal of 4~20mA.When the gas concentration in valve well reaches preset value, detector 2 will collect combustion gas signal.
In the embodiment, signal transmitting apparatus 3 is selected as wireless transmission method, is used to receive the signal of two detectors 2,
And after handling signal, through wireless way for transmitting to monitoring center 4.
Further, which further includes power supply unit 61, power supply unit 61 respectively with detector 2
It is electrically connected with signal transmitting apparatus 3, for providing electric energy for detector 2 and signal transmitting apparatus 3.Power supply unit 61 can provide
AC220 DC24V electric energy.In the embodiment, power supply unit 61 is power supply box, provides 220V voltage, and each valve well pair
One should be arranged, be specifically installed on the ground for closing on valve well, bottom is supported on bracket 62, and through cable 63 with it is corresponding
Detector 2 connects.
If power provision points are farther out, sun-generated electric power power supply may be selected, power for example, by using solar panels.
Monitoring center 4 includes signal receiving device 41 and host computer 42 communicatively connected to each other, and signal receiving device 41 is used
In receive signal transmitting apparatus 3 signal, host computer 42 for receive the signal from signal receiving device 41 and to signal into
Row processing.Signal receiving device 41 is selected as transmission of wireless signals mode, is received by GPRS network and comes from signal transmitting apparatus 3
Signal and transmit a signal to host computer 42, by host computer 42 come to signal carry out comprehensive analysis.Also to receive to come from combustion gas
The data such as factory's inlet and outlet gas flow, pressure, temperature need to be uploaded to host computer 42, to carry out assistant analysis.Host computer 42 also connects
The specific coordinate of distribution for receiving road valve well, is analyzed by software, can be monitored in real time, if any leakage, analyzes meeting by software
Then and alarm it shows the coordinate of alarm point or the number of piping shaft, and sends information to relevant portion, handled.
The present invention also provides a kind of underground gas pipeline leak hunting methods, and the underground gas pipeline in the present embodiment can be used
Leak detection system carries out gas leakage detection.As shown in figure 4, specifically referring to step S01)-S02).
S01), detection is set to the first valve well 51 and the second valve well adjacent to each other on underground gas pipeline 7 respectively
Leakage combustion gas at 52.
Specifically, the detector 2 in the first valve well 51 and the second valve well 52 starts, and is acquired in corresponding valve well respectively
Leakage combustion gas signal.
S02), the leakage position of combustion gas is determined according to the testing result of the first valve well 51 and the second valve well 52.
Specifically, it is let out if the detector 2 in detector 2 and the second valve well 52 in the first valve well 51 successively detects
Reveal combustion gas, then determines to reveal at the gas pipeline 7 between the first valve well 51 and the second valve well 52, and gas pipeline 7
On leak point closer to the first valve well 51.Collected gas leakage signal is transmitted to host computer by each detector 2
42, host computer 42 determines the well section that gas leakage occurs after analyzing, and according to the leakage combustion gas signal acquisition of two detectors 2
Time difference determines specific leakage point.
If the detector 2 in detector 2 and the second valve well 52 in the first valve well 51 first has a valve well detection
To leakage combustion gas, and another valve well not yet detects leakage combustion gas after preset time, then determines that this detects leakage combustion
It is revealed at the valve well of gas.Gas leakage signal is transmitted to host computer 42 by detector 2, and host computer 42 determines after analyzing
The pound sign for the valve well revealed and leakage position are valve well inner valve.
After host computer 42 detects leakage information, it can show the information and issue alarm, combustion gas is analyzed by management software
The specific location of leakage, and instruction is sent, closing gas valve door cuts off gas source, operating personnel is notified to overhaul.
Underground gas pipeline leak detection system in the application, laying is simple, and equipment is easy for installation, convenient for safeguarding, cost compared with
It is low, round-the-clock real time monitoring can be carried out to the operation of gas ductwork.The underground gas pipeline leak detection system can have in time
The leak case of effect discovery Underground pipe network, quickly and accurately locks gas leakage well section, or even the specific location of leakage, from
It and is that the time has been reserved in the carry out emergency processing of operating personnel, it is therefore prevented that the generation of safety accident.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.Especially, as long as there is no knots
Structure conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The present invention does not limit to
In specific embodiment disclosed herein, but include all technical solutions falling within the scope of the claims.
Claims (9)
1. a kind of underground gas pipeline leak detection system characterized by comprising
Fuel gas transmission part is revealed, for receiving the combustion gas of the fuel gas pipeline leakage, and by the combustion gas of the fuel gas pipeline leakage
It is delivered in the valve well of the underground gas pipeline；
Detector is set in the valve well, in combustion gas and the valve well for detecting the gas pipeline leakage
The combustion gas of valve leaks；
Signal transmitting apparatus is communicated to connect with the detector, for receiving the signal from the detector, and by the signal
Unofficial biography；
Monitoring center is analyzed for receiving the signal from the signal transmitting apparatus, and by the signal received, thus
The operation of the gas pipeline is monitored；
The leakage fuel gas transmission part is porous screen casing, and the porous screen casing is set to the top of gas pipeline and against described
Gas pipeline setting, the both ends of the porous screen casing extend respectively to disconnect at two adjacent valve wells, to receive
The combustion gas revealed on the fuel gas pipeline between two valve wells is simultaneously transmitted at the valve well.
2. underground gas pipeline leak detection system according to claim 1, which is characterized in that the monitoring center includes each other
The signal receiving device and host computer of communication connection, the signal receiving device are used to receive the letter of the signal transmitting apparatus
Number, the host computer is for receiving the signal from the signal receiving device and handling signal.
3. underground gas pipeline leak detection system according to claim 1, which is characterized in that it further include power supply unit, it is described
Power supply unit is electrically connected with the detector and the signal transmitting apparatus respectively, for passing for the detector and the signal
Defeated device provides electric energy.
4. underground gas pipeline leak detection system according to claim 3, which is characterized in that the power supply unit is solar energy
Plate.
5. underground gas pipeline leak detection system according to claim 1, which is characterized in that the detector is set to the valve
On inner wall at the well head of door well.
6. underground gas pipeline leak detection system according to claim 1, which is characterized in that set on the bottom wall of the valve well
There is plash, the plash is located at the lower part of pipeline, for collecting the ponding in valve well.
7. underground gas pipeline leak detection system according to claim 1, which is characterized in that the signal transmitting apparatus is nothing
Line signal transmitting apparatus.
8. a kind of underground gas pipeline leak hunting method, being hunted leak using underground gas pipeline described in any one of claim 1-7 is
System carries out gas leakage detection characterized by comprising
Detection is set to the leakage combustion gas at the first valve well and the second valve well adjacent to each other on underground gas pipeline respectively；
The leakage position of combustion gas is determined according to the testing result of first valve well and the second valve well.
9. underground gas pipeline leak hunting method according to claim 8, which is characterized in that described according to first valve
The leakage position of the testing result of well and the second valve well judgement combustion gas, comprising:
If successively detecting leakage combustion gas at first valve well and at the second valve well, determine first valve well and
It is revealed at gas pipeline between second valve well；
If first there is a valve well to detect leakage combustion gas at first valve well and at the second valve well, and another valve
Well not yet detects leakage combustion gas after preset time, then determines that this is detected and reveal at the valve well of leakage combustion gas.
Priority Applications (1)
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| CN201710560878.4A CN107131429B (en) | 2017-07-11 | 2017-07-11 | Underground gas pipeline leak detection system and underground gas pipeline leak hunting method |
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|---|---|---|---|
| CN201710560878.4A CN107131429B (en) | 2017-07-11 | 2017-07-11 | Underground gas pipeline leak detection system and underground gas pipeline leak hunting method |
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| CN107131429A CN107131429A (en) | 2017-09-05 |
| CN107131429B true CN107131429B (en) | 2019-04-09 |
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| CN108119760B (en) * | 2017-12-06 | 2019-10-25 | 北京理工大学 | A kind of localization method and system of underground gas pipeline leakage region |
| CN108006440A (en) * | 2017-12-08 | 2018-05-08 | 成都星协科技有限公司 | Distributed gas leak detection system |
| CN109058770B (en) * | 2018-07-17 | 2019-06-07 | 北京讯腾智慧科技股份有限公司 | A kind of method for repairing and mending and system of the gas pipeline based on Beidou Differential positioning |
| CN111968347A (en) * | 2020-08-27 | 2020-11-20 | 闫洪飞 | Anti-damage wireless alarm system for gas pipe network |
| CN112197180B (en) * | 2020-10-16 | 2022-06-03 | 宁波耀通管阀科技有限公司 | Gas pipe fitting leak protection structure |
| CN113154270A (en) * | 2021-04-23 | 2021-07-23 | 深圳市中燃科技有限公司 | Gas leakage data monitoring system and installation method thereof |
| CN113624411B (en) * | 2021-07-28 | 2023-11-24 | 中航油青岛国际机场航空油料有限责任公司 | Waterproof tightness detection device and detection method for valve well of aircraft apron oiling pipeline |
| CN113847553B (en) * | 2021-09-02 | 2022-09-09 | 宝航环境修复有限公司 | Underground oil pipeline leakage monitoring system and method |
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| CN107131429A (en) | 2017-09-05 |
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Effective date of registration: 20180329 Address after: 014010 the Inner Mongolia Autonomous Region Baotou City Queensland Steel Street Applicant after: Alex Hua Tian Baotou design and Research Institute Co., Ltd. Applicant after: Huatian Nanjing Engineering & Technology Corporation, MCC Address before: 014010 the Inner Mongolia Autonomous Region Baotou City Queensland Steel Street No. 45 Applicant before: Huatian Nanjing Engineering & Technology Corporation, MCC |
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Effective date of registration: 20190529 Address after: 014010 Steel Street, Kunqu District, Baotou, the Inner Mongolia Autonomous Region Patentee after: Zhongye Northwest Engineering Technology Co., Ltd. Address before: 014010 Steel Street, Kunqu District, Baotou, the Inner Mongolia Autonomous Region Co-patentee before: Huatian Nanjing Engineering & Technology Corporation, MCC Patentee before: Alex Hua Tian Baotou design and Research Institute Co., Ltd. |