CN107131429A - 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
- CN107131429A CN107131429A CN201710560878.4A CN201710560878A CN107131429A CN 107131429 A CN107131429 A CN 107131429A CN 201710560878 A CN201710560878 A CN 201710560878A CN 107131429 A CN107131429 A CN 107131429A
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- Prior art keywords
- gas pipeline
- leakage
- valve well
- signal
- valve
- Prior art date
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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 system, including：Leakage fuel gas transmission part, the combustion gas for receiving fuel gas pipeline leakage, and by the valve well of the fuel gas transmission of fuel gas pipeline leakage to underground gas pipeline；Detector, in valve well, for detect Gas Pipe leakage combustion gas and valve well in valve leaks combustion gas；Signal transmitting apparatus, is communicated to connect with detector, for receiving the signal from detector, and by the signal unofficial biography；Surveillance 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 particular location even revealed, so as to reserve the time for the carry out emergency processing of operating personnel, it is therefore prevented that the generation of security incident.The present invention also provides a kind of underground gas pipeline leak hunting method.
Description
Technical field
Examined the present invention relates to Underground pipe network leak detection equipment technical field, more particularly to a kind of underground gas pipeline
Leakage system and underground gas pipeline leak hunting method.
Background technology
Underground piping in city is crisscross, is that resident and enterprise provide the various energy, is referred to as " the life in city
Line ".
Gas pipeline provides a kind of natural, cleaning fuel for resident in underground pipe network, and gas pipeline is old with pipeline
The reasons such as change, pipeline junction corrosion, may all cause gas leakage, especially in valve well, underground valve pit is one close
The confined space closed, the facility such as burnt gas valve well interior conduit, valve passes through long-play, under stuffy, wet environment, holds
Easily gather combustion gas.Combustion gas runs up to certain volume fraction, reaches the condition that the explosion ratio limit is 5%-15%, meets ignition source just
Serious casualties and property loss can all be caused by being likely to occur after gas explosion accident, pipe explosion.Then Gas Pipe
The problem of leak detection in road turns into social concerns, leak detection technology is timely and effectively reacted to operator, it is to avoid blast thing
Therefore generation, be technology urgently to be resolved hurrily at present.
The content 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 leakage is specific
Position, so as to be set aside some time for the carry out emergency processing of operating personnel, it is therefore prevented that the underground gas pipeline of the generation of security incident
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 there is provided a kind of underground gas pipeline leak detection system, including：
Reveal fuel gas transmission part, the combustion gas for receiving 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, in the valve well, in combustion gas and the valve well for detecting the Gas Pipe 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；
Surveillance center, is analyzed for receiving the signal from the signal transmitting apparatus, and by the signal received,
So as to which the operation to gas pipeline is monitored.
Preferably, the leakage fuel gas transmission part is porous screen casing, and the porous screen casing is located at the upper of gas pipeline
Side is simultaneously set against the gas pipeline, and the two ends of the porous screen casing extend respectively to disconnect at two adjacent valve wells,
So as to receive the combustion gas revealed on the fuel gas pipeline between two valve wells and transmit to the valve well.
Preferably, the Surveillance center includes signal receiving device and host computer communicatively connected to each other, and the signal connects
Receiving apparatus is used for the signal for receiving the signal transmitting apparatus, and the host computer is used to receive from the signal receiving device
Signal is simultaneously handled signal.
Preferably, in addition to electric supply installation, the electric supply installation respectively with the detector and the signal transmitting apparatus
Electrical connection, for being that the detector and the signal transmitting apparatus provide electric energy.
Preferably, the electric supply installation is solar panels.
Preferably, the detector is on the inwall at the well head of the valve well.
Preferably, the bottom wall of the valve well is provided with plash, and the plash is located at the bottom 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 there is provided a kind of underground gas pipeline leak hunting method, including：
Adjacent to each other first valve well of the detection on underground gas pipeline and the leakage combustion at the second valve respectively
Gas；
The leakage position of combustion gas is judged according to the testing result of first valve well and the second valve well.
Preferably, the leakage position that combustion gas is judged according to the testing result of first valve well and the second valve well
Put, including：
If successively detecting leakage combustion gas at first valve well and at the second valve well, first valve is judged
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 judges to let out at the valve well for detecting leakage combustion gas
Dew.
The underground gas pipeline leak detection system that the present invention is provided, lays simple, equipment is easy for installation, is easy to safeguard, cost
It is relatively 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 be timely
The leak case of Underground pipe network is effectively found, gas leakage well section, or even the particular location revealed quickly and accurately is locked,
So as to reserve the time for the carry out emergency processing of operating personnel, it is therefore prevented that the generation of security incident.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described.In all of the figs, similar element
Or part is general by similar reference mark.In accompanying drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 shows the theory diagram of underground gas pipeline leak detection system according to embodiments of the present invention.
Fig. 2 shows the structural representation of underground gas pipeline leak detection system according to embodiments 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 embodiments of the present invention.
In figure：Leakage fuel gas transmission part 1, suit portion 11, sieve aperture 12, detector 2, signal transmitting apparatus 3, Surveillance center 4,
Signal receiving device 41, host computer 42, the first valve well 51, the second valve well 52, well lid 501, plash 503, electric supply installation
61st, support 62, cable 63, gas pipeline 7, stratum 100.
Embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Clearly illustrate technical scheme, therefore be only used as example, and the protection model of the present invention can not be limited with this
Enclose.
As shown in Figure 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 Surveillance center 4.Wherein, leakage fuel gas transmission part 1, the combustion for receiving the leakage of gas pipeline 7
In gas, and the fuel gas transmission that gas pipeline 7 is leaked to the valve well of underground gas pipeline 7；Detector 2 is located in valve well,
For detect Gas Pipe leakage combustion gas and valve well in valve leaks combustion gas；Signal transmitting apparatus 3 leads to detector 2
Letter connection, for receiving the signal from detector 2, and by the signal unofficial biography；Surveillance center 4 is used to receive from signal transmission
The signal of device 3, and the signal received is analyzed, so that the operation to gas pipeline 7 is monitored.
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 more than the depth of burying of gas pipeline 7.First valve well 51
It is used for the maintenance and maintenance of valve and instrument etc. with the second valve well 52.Each valve well head is provided with well lid 501.Each valve
The bottom wall of door well is provided with plash 503, and plash 503 is located at the bottom of pipeline, for collecting the ponding in valve well.The reality
Apply in example, the bottom wall of each valve well is incline structure, and plash 503 is located at the side of bottom wall, and positioned at minimum depression.Valve
If any water in well, flow into first in catch pit, facilitate maintenance personal to use pumping water, also function to the guarantor to pipeline and detection device
The effect of shield.
It is porous screen casing to reveal fuel gas transmission part 1, and porous screen casing is located at the top of gas pipeline 7 and against Gas Pipe
Road 7 is set, and the two ends of porous screen casing extend respectively to disconnect at two adjacent valve wells, so as to receive from two valve wells
Between fuel gas pipeline on the combustion gas revealed and transmit to valve well.The porous screen casing is chosen as pvc pipe, such as a diameter of φ
15 pvc pipe, or other materials, from 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 suits through suiting portion 11 with gas pipeline 7.This suits
Sieve aperture 12 is offered in portion 11, for being connected with gas pipeline 7.Suit the geomery in portion 11 and the shape chi of gas pipeline 7
It is very little to match so that this suits portion 11 can be with the tight fits of gas pipeline 7.More preferably, sealing material can be set in the portion that suits 11
Expect (not shown), such as caulking gum material so that leakage fuel gas transmission part 1 is pressed on gas pipeline 7 after embedded, is let out
Reveal connected relation closed between fuel gas transmission part 1 and sealing pipeline, advantageously the transmission in leakage combustion gas and signal acquisition,
Improve feedback accuracy.When the leakage fuel gas transmission part 1 is installed, it is located to the top of gas pipeline 7, and it is suited portion 11
Suit on the upper periphery wall of gas pipeline 7, the two 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 is buried in fact in soil layer, it is realized with gas pipeline 7 under the pressure of soil layer and closely cut
Close.When there is leakage point on gas pipeline 7, leakage point is connected through sieve aperture 12 with the inner chamber of the leakage fuel gas transmission part 1, and this is interior
Chamber is connected with valve well.
On the one hand detector 2 is easy to reveal the collection of combustion gas signal, separately on the inwall at the well head of each valve well
On the one hand prevent by valve well inner product Water Damage.In the embodiment, detector 2 specifically elects methane concentration detector 2 as, and it is exported
4~20mA signal.When the gas concentration in valve well reaches preset value, detector 2 will collect combustion gas signal.
In the embodiment, signal transmitting apparatus 3 elects wireless transmission method as, and it is used for the signal for receiving two detectors 2,
And after handling signal, through wireless way for transmitting to Surveillance center 4.
Further, the leak detection system of gas pipeline 7 also include electric supply installation 61, electric supply installation 61 respectively with detector 2
Electrically connected with signal transmitting apparatus 3, for being that detector 2 and signal transmitting apparatus 3 provide electric energy.Electric supply installation 61 can be provided
AC220 or DC24V electric energy.In the embodiment, electric supply installation 61 be consumer unit there is provided 220V voltages, and each valve well pair
One should be set, be specifically installed on the ground for closing on valve well, bottom is supported on support 62, and through cable 63 with it is corresponding
Detector 2 is connected.
If power provision points are farther out, optional sun-generated electric power is powered, and is powered for example with solar panels.
Surveillance center 4 includes signal receiving device 41 and host computer 42 communicatively connected to each other, and signal receiving device 41 is used
In the signal for receiving signal transmitting apparatus 3, host computer 42 is used to receive the signal from signal receiving device 41 and signal is entered
Row processing.Signal receiving device 41 elects transmission of wireless signals mode as, and it 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
Factory, which imports and exports the data such as 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 of road valve well is received, by software analysis, can in real time monitor, if any leakage, pass through software analysis meeting
Then and alarm the coordinate of display alarm point or the numbering of piping shaft, and send information to relevant portion, are handled.
The present invention also provides a kind of underground gas pipeline leak hunting method, and it can use the underground gas pipeline in the present embodiment
Leak detection system carries out gas leakage detection.As shown in figure 4, specifically referring to step S01)-S02).
S01), the first valve well 51 and the second valve well adjacent to each other that detection is located 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 gathers respectively in correspondence valve well
Leakage combustion gas signal.
S02 the leakage position of combustion gas), is judged according to the testing result of the first valve well 51 and the second valve well 52.
Specifically, let out if the priority of detector 2 in the valve well 52 of detector 2 and second in the first valve well 51 is detected
Reveal combustion gas, then judge 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.Each detector 2 transmits the gas leakage signal collected to host computer
42, host computer 42 determines the well section for occurring gas leakage after analysis, and according to the leakage combustion gas signal acquisition of two detectors 2
Time difference determines specific leakage point.
If the detector 2 in the valve well 52 of detector 2 and second 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 judges that this detects leakage combustion
Revealed at the valve well of gas.Detector 2 transmits gas leakage signal to host computer 42, and host computer 42 is determined after analysis
The pound sign for the valve well revealed and leakage position are valve well inner valve.
Host computer 42 is detected after leakage information, can be shown the information and be sent alarm, combustion gas is analyzed by management software
The particular location of leakage, and instruction is sent, closing gas valve door cuts off source of the gas, notifies operating personnel to be overhauled.
Underground gas pipeline leak detection system in the application, lays simple, equipment is easy for installation, is easy to safeguard, 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
Effect finds the leak case of Underground pipe network, quickly and accurately locks gas leakage well section, or even the particular location revealed, from
And be that the time has been reserved in the carry out emergency processing of operating personnel, it is therefore prevented that the generation of security incident.
It should be noted that unless otherwise indicated, technical term or scientific terminology 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 ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying relatively important
Property or the implicit quantity for indicating indicated technical characteristic.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In this application, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.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：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme, it all should cover among the claim of the present invention and the scope of specification.Especially, as long as in the absence of knot
Structure conflicts, and the every technical characteristic being previously mentioned in each embodiment can combine in any way.The present invention does not limit to
In specific embodiment disclosed herein, but all technical schemes including falling within the scope of the appended claims.
Claims (10)
1. a kind of underground gas pipeline leak detection system, it is characterised in that including：
Reveal fuel gas transmission part, the combustion gas for receiving the fuel gas pipeline leakage, and by the combustion gas of the fuel gas pipeline leakage
In the valve well for being delivered to the underground gas pipeline；
Detector, in the valve well, for detect Gas Pipe leakage combustion gas and the valve well in valve
The combustion gas of door leakage；
Signal transmitting apparatus, is communicated to connect with the detector, for receiving the signal from the detector, and by the signal
Unofficial biography；
Surveillance center, is analyzed for receiving the signal from the signal transmitting apparatus, and by the signal received, so that
Operation to the gas pipeline is monitored.
2. underground gas pipeline leak detection system according to claim 1, it is characterised in that the leakage fuel gas transmission part is
Porous screen casing, and the porous screen casing is located at the top of gas pipeline and is set against the gas pipeline, many hole sizers
The two ends of pipe extend respectively to disconnect at two adjacent valve wells, so as to receive between two valve wells
The combustion gas revealed on the fuel gas pipeline is simultaneously transmitted to the valve well.
3. underground gas pipeline leak detection system according to claim 1, it is characterised in that the Surveillance center is included each other
The signal receiving device and host computer of communication connection, the signal receiving device are used for the letter for receiving the signal transmitting apparatus
Number, the host computer is used to receive the signal from the signal receiving device and signal is handled.
4. underground gas pipeline leak detection system according to claim 1, it is characterised in that described also including electric supply installation
Electric supply installation is electrically connected with the detector and the signal transmitting apparatus respectively, for being that the detector and the signal are passed
Defeated device provides electric energy.
5. underground gas pipeline leak detection system according to claim 4, it is characterised in that the electric supply installation is solar energy
Plate.
6. underground gas pipeline leak detection system according to claim 1, it is characterised in that the detector is located at the valve
On inwall at the well head of door well.
7. underground gas pipeline leak detection system according to claim 1, it is characterised in that set on the bottom wall of the valve well
There is plash, the plash is located at the bottom of pipeline, for collecting the ponding in valve well.
8. underground gas pipeline leak detection system according to claim 1, it is characterised in that the signal transmitting apparatus is nothing
Line signal transmitting apparatus.
9. a kind of underground gas pipeline leak hunting method, it is characterised in that including：
Adjacent to each other first valve well of the detection on underground gas pipeline and the leakage combustion gas at the second valve well respectively；
The leakage position of combustion gas is judged according to the testing result of first valve well and the second valve well.
10. underground gas pipeline leak hunting method according to claim 9, it is characterised in that described according to first valve
The testing result of door well and the second valve well judges the leakage position of combustion gas, including：
If successively detecting leakage combustion gas at first valve well and at the second valve well, judge first valve well and
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 judges to reveal at the valve well for detecting leakage combustion gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560878.4A CN107131429B (en) | 2017-07-11 | 2017-07-11 | Underground gas pipeline leak detection system and underground gas pipeline leak hunting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560878.4A CN107131429B (en) | 2017-07-11 | 2017-07-11 | Underground gas pipeline leak detection system and underground gas pipeline leak hunting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107131429A true CN107131429A (en) | 2017-09-05 |
| CN107131429B CN107131429B (en) | 2019-04-09 |
Family
ID=59737841
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|---|---|---|---|
| CN201710560878.4A Active 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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006440A (en) * | 2017-12-08 | 2018-05-08 | 成都星协科技有限公司 | Distributed gas leak detection system |
| CN108119760A (en) * | 2017-12-06 | 2018-06-05 | 北京理工大学 | A kind of localization method and system of underground gas pipeline leakage region |
| CN109058770A (en) * | 2018-07-17 | 2018-12-21 | 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 |
| CN112197180A (en) * | 2020-10-16 | 2021-01-08 | 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 |
| CN113624411A (en) * | 2021-07-28 | 2021-11-09 | 中航油青岛国际机场航空油料有限责任公司 | Device and method for detecting waterproof sealing performance of valve well of oil feeding pipeline of apron |
| CN113847553A (en) * | 2021-09-02 | 2021-12-28 | 宝航环境修复有限公司 | Underground oil pipeline leakage monitoring system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108119760A (en) * | 2017-12-06 | 2018-06-05 | 北京理工大学 | A kind of localization method and system of underground gas pipeline leakage region |
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| 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 |
| CN113624411A (en) * | 2021-07-28 | 2021-11-09 | 中航油青岛国际机场航空油料有限责任公司 | Device and method for detecting waterproof sealing performance of valve well of oil feeding pipeline of apron |
| 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 |
| CN113847553A (en) * | 2021-09-02 | 2021-12-28 | 宝航环境修复有限公司 | Underground oil pipeline leakage monitoring system and method |
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|---|---|
| CN107131429B (en) | 2019-04-09 |
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