CN110145694A - A kind of gas distributing system leakage monitoring system and detection method - Google Patents
A kind of gas distributing system leakage monitoring system and detection method Download PDFInfo
- Publication number
- CN110145694A CN110145694A CN201910588258.0A CN201910588258A CN110145694A CN 110145694 A CN110145694 A CN 110145694A CN 201910588258 A CN201910588258 A CN 201910588258A CN 110145694 A CN110145694 A CN 110145694A
- Authority
- CN
- China
- Prior art keywords
- sound wave
- sensor
- wave sensor
- signal
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000012545 processing Methods 0.000 claims abstract description 40
- 239000007789 gas Substances 0.000 claims abstract description 36
- 239000003345 natural gas Substances 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 230000003750 conditioning effect Effects 0.000 claims description 7
- 239000002775 capsule Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Examining Or Testing Airtightness (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a kind of gas distributing system leakage monitoring system and detection methods, the system includes at least two groups the first sound wave sensor module, sensor module described at least two groups is respectively positioned on the main pipeline of gas distributing system, and the first sound wave sensor module includes two sound wave sensors in fixed spacing setting；Second sound wave sensor module, the second sound wave sensor module are located at around the main pipeline and branch pipeline of natural gas grid；The second sound wave sensor module includes three sound wave sensors.The system judges the direction of signal by the united mode of multisensor, while the interference due to caused by first and last end or branch line is shielded by the signal processing of multisensor, then by relevant signal processing, realizes the accurate positioning of Leakage of Urban Natural Gas Pipelines.It will be able to be that the safety in production of city natural gas pipe network escorts suitable for the line leakage of city natural gas pipe network.
Description
Technical field
The present invention relates to line leakage technical field, more particularly to a kind of gas distributing system leakage monitoring system and
Detection method.
Background technique
The line leakage system of multitone wave sensor suitable for city natural gas pipe network.China's city gas pipe
Net is in the rapid growth phase in the past 10 years, the construction of especially transfer natural gas from the west to the east a line, two wires, three lines, make along city all use
Natural gas is gone up, the construction of city natural gas pipe network is also more and more intensive, and whole nation most cities have all used at present
Defeated natural gas is managed, with further speeding up for China's urban construction, natural gas is as a kind of clean energy resource, in China city energy
The specific gravity of source consumer field is increasing, and the safety problem of pipeline network of fuel gas in city is also increasingly severe, is faced at any time due to combustion
Feed channel leaks bring explosion and property loss and casualties.
Summary of the invention
The present invention provides a kind of gas distributing system leakage monitoring system and detection methods.
The present invention provides following schemes:
A kind of gas distributing system leakage monitoring system, comprising:
At least two groups the first sound wave sensor module, sensor module described at least two groups are respectively positioned on the master of gas distributing system
On pipeline, the first sound wave sensor module includes two sound wave sensors in fixed spacing setting；
Second sound wave sensor module, the second sound wave sensor module are located at the main pipeline and branch spool of natural gas grid
Around road；The second sound wave sensor module includes three sound wave sensors, and two of them sound wave sensor is located at day
On the main pipeline of right gas net and branch pipeline two sides are distributed in, another sound wave sensor is located on the branch pipeline, three sounds
In wave sensor it is two neighboring between spacing it is equal and with two sound wave sensors in the first sound wave sensor module it
Between spacing it is equal；
Wherein, each sensor module can communicate with independent sound wave leakage monitoring system base station be connected respectively；Each sound wave is let out
Leakage monitoring system base-station is connected with cloud data processing platform (DPP) respectively.
Preferably: each sound wave sensor that each sensor module respectively contains passes through independent sound wave signals respectively
Conditioning module and the realization of sound wave signals data communication module can communicate with sound wave leakage monitoring system base station and be connected.
Preferably: sound wave leakage monitoring system base station include the multichannel sound wave signals processing module that is electrically connected to each other with
And sound wave signals store remote transmission terminal；The sound wave signals data communication module and the multichannel sound wave signals processing module phase
Even.
Preferably: the multichannel sound wave signals processing module is connected with GPS module.
Preferably: the cloud data processing platform (DPP) is connected with enterprise's signal processing database storage server, the enterprise
Signal processing database storage server is connected with multiple alarm indication terminals.
Preferably: further including being set on the main pipeline of the gas distributing system and the branch pipeline of/gas distributing system
Pressure sensor and flow sensor, the pressure sensor and the flow sensor respectively with the cloud data processing
Platform can communicate connected.
A kind of detection method of the gas distributing system leakage monitoring system, which comprises
The time that each sound wave sensor that each sensor module includes gets signal is obtained respectively, and determination gets signal
The the first sound wave sensor of time earliest；
Determine the first sound wave sensor module and the first sound wave sensor where the first sound wave sensor
Orientation in the first sound wave sensor module；
It is located at the orientation in the first sound wave sensor module according to determining the first sound wave sensor and determines letter
Number source pipeline section, signal source pipeline section are adjacent the in first tube sensor and the first sound wave sensor module
Two sound wave sensor lines are parallel and are located at the outer of the first sound wave sensor and the second sound wave sensor opposite side
The pipeline section of side；
Judge that sound wave type of the second sound wave sensor at the first moment is opposite with the first sound wave sensor described
Whether the sound wave type after delay first time at the first moment is identical, determines signal source class according to sound wave type judging result
Type；Spacing of the first time between the first sound wave sensor and the second sound wave sensor divided by sound in the duct
Theoretical transmission speed.
Preferably: the first sensor component is two groups, and the second sensor component is passed positioned at described in two groups first
Between sensor component；
The first sound wave sensor is located in the first sensor component of the head end of the main pipeline, first sound wave
Sensor be located at close to the main pipeline head end side, sound wave type of the second sound wave sensor at the first moment with
Sound wave type after the first sound wave sensor relatively described delay first time at first moment is identical, then the signal source
Type is upstream opening and closing, valve opening signal；
The first sound wave sensor is located in the first sensor component of the end of the main pipeline, first sound wave
Sensor be located at close to the main pipeline end side, sound wave type of the second sound wave sensor at the first moment with
Sound wave type after the first sound wave sensor relatively described delay first time at first moment is identical, then the signal source
Type is downstream opening and closing, valve opening signal；
The first sound wave sensor is located in the second sensor component, and the first sound wave sensor is located at described
On branch pipeline, sound wave type of the second sound wave sensor at the first moment institute opposite with the first sound wave sensor
Sound wave type after stating delay first time at the first moment is identical, then the signal source type is the opening and closing of branch pipeline, opens
Valve signal.
Preferably: the first sound wave sensor is located in the first sensor component of the head end of the main pipeline, described
The the first moment delay opposite with the first sound wave sensor of sound wave type of the second sound wave sensor at the first moment
Sound wave type after first time is different, then the signal source type is the first sensor of the head end positioned at the main pipeline
The leakage signal on main pipeline between component and the second sensor component；
The first sound wave sensor is located in the first sensor component of the end of the main pipeline, first sound wave
Sensor is located remotely from the end side of the main pipeline, sound wave type of the second sound wave sensor at the first moment with
Sound wave type after the first sound wave sensor relatively described delay first time at first moment is different, then the signal source
Type is the main pipeline between the first sensor component and the second sensor component of the end of the main pipeline
On leakage signal；
The first sound wave sensor is located in the second sensor component, and the first sound wave sensor is located at described
On branch pipeline, sound wave type of the second sound wave sensor at the first moment institute opposite with the first sound wave sensor
Sound wave type after stating delay first time at the first moment is different, then the signal source type is that the leakage of branch pipeline is believed
Number.
Preferably: being calculated by the following formula distance x of the leakage point apart from branch pipeline；
In formula: Δ t is that the first sound wave sensor is obtained in the time for getting signal and the second sensor component
The sensor adjacent with the first sound wave sensor gets the difference of the time of signal, L be branch pipeline to main pipeline head end/
The length of end, v1For the actual speed that leakage sound wave signals downstream transmit, v2The reality upstream transmitted for leakage sound wave signals
Border speed.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
By the invention it is possible to a kind of gas distributing system leakage monitoring system and detection method be realized, in a kind of realization side
Under formula, which may include at least two groups the first sound wave sensor module, and sensor module described at least two groups is respectively positioned on day
On the main pipeline of right gas pipe network, the first sound wave sensor module includes two sound wave sensors in fixed spacing setting；
Second sound wave sensor module, the second sound wave sensor module are located at around the main pipeline and branch pipeline of natural gas grid；
The second sound wave sensor module includes three sound wave sensors, and two of them sound wave sensor is located at natural gas grid
On main pipeline and branch pipeline two sides are distributed in, another sound wave sensor is located on the branch pipeline, three sound wave sensors
In it is two neighboring between spacing is equal and spacing between two sound wave sensors in the first sound wave sensor module
It is equal；Wherein, each sensor module can communicate with independent sound wave leakage monitoring system base station be connected respectively；Each sound wave leakage prison
Examining system base station is connected with cloud data processing platform (DPP) respectively.The system judges the side of signal by the united mode of multisensor
To, while the interference due to caused by first and last end or branch line is shielded by the signal processing of multisensor, then pass through relevant letter
Number processing, realize the accurate positioning of Leakage of Urban Natural Gas Pipelines.It, will suitable for the line leakage of city natural gas pipe network
It can escort for the safety in production of city natural gas pipe network.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of connection block diagram of gas distributing system leakage monitoring system provided in an embodiment of the present invention；
Fig. 2 is a kind of working principle of the detection method of gas distributing system leakage monitoring system provided in an embodiment of the present invention
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
Embodiment
Referring to Fig. 1, it is a kind of gas distributing system leakage monitoring system provided in an embodiment of the present invention and detection method, such as schemes
Shown in 1, which includes at least two groups the first sound wave sensor module, and sensor module described at least two groups is respectively positioned on natural gas
On the main pipeline of pipe network, the first sound wave sensor module includes two sound wave sensors in fixed spacing setting；
Second sound wave sensor module, the second sound wave sensor module are located at the main pipeline and branch spool of natural gas grid
Around road；The second sound wave sensor module includes three sound wave sensors, and two of them sound wave sensor is located at day
On the main pipeline of right gas net and branch pipeline two sides are distributed in, another sound wave sensor is located on the branch pipeline, three sounds
In wave sensor it is two neighboring between spacing it is equal and with two sound wave sensors in the first sound wave sensor module it
Between spacing it is equal；
Wherein, each sensor module can communicate with independent sound wave leakage monitoring system base station be connected respectively；Each sound wave is let out
Leakage monitoring system base-station is connected with cloud data processing platform (DPP) respectively.Specifically, each sensor module respectively contain it is each described
Sound wave sensor is realized and the sound by independent sound wave signals conditioning module and sound wave signals data communication module respectively
Wave leakage monitoring system base station can communicate connected.Sound wave leakage monitoring system base station includes the multichannel sound wave being electrically connected to each other
Signal processing module and sound wave signals store remote transmission terminal；The sound wave signals data communication module and the multichannel sound wave are believed
Number processing module is connected.The multichannel sound wave signals processing module is connected with GPS module.The cloud data processing platform (DPP) is connected with
Enterprise's signal processing database storage server, it is aobvious that enterprise's signal processing database storage server is connected with multiple alarms
Show terminal.
It further, further include being set on the main pipeline of the gas distributing system and the branch pipeline of/gas distributing system
Pressure sensor and flow sensor, the pressure sensor and the flow sensor are respectively and at the cloud data
Platform can communicate connected.
Moment of the system provided by the present application by acquisition leakage, the infrasound of medium and pipe friction generation, then pass through
Leakage signal reaches the time difference of pipe ends to calculate leak position, according to the characteristic of urban pipe network, in each monitoring of pipeline
Point two sound wave line leakage instrument of each installation, based on one, supplemented by one, two major-minor sound wave line leakage instrument it
Between require to have the clipping room of 1m away from, the sound wave line leakage system suitable for gas distributing system mainly include sound wave sensing
Device, sound wave signals conditioning module, voice band data communication module, the working principle of sound wave line leakage instrument are sound wave sensors
Infrasound signal will be collected and be transmitted to sound wave signals conditioning module, sound wave signals conditioning module passes the infrasound signal after conditioning
Voice band data communication module is passed, voice band data is being transmitted to the processing of multichannel sound wave signals by cable by voice band data communication module
Module, multichannel sound wave signals processing module pass through by data operation and to my data the primary and reference sensors signal received simultaneously
Time tag is stamped with GPS communication, then sound wave signals storage remote transmission terminal (RTU) is transmitted to by high speed USB communication port, RTU is logical
Three sound wave pipe leakage prisons will respectively be installed by crossing 4G Internet of Things around data remote to cloud data processing platform (DPP) and each branch line
Surveying instrument, (as other points, three monitor the secondary sound wave line leakage instrument operating mode of 1, branch line USB communication port two
The data of instrument upload to multichannel sound wave signals processing module by cable, and multichannel sound wave processing module carries out data to three road signals
After operation and processing, redundancy integration is carried out, then stamps time tag to each data after integration, is then transmitted to by high speed
Sound wave signals store remote transmission terminal (RTU), and RTU is by 4G Internet of Things by data remote to cloud data processing platform (DPP)), at cloud data
Each data that platform collects the online each point of natural gas tube will count after carrying out integrated treatment, algorithm operation judgement
According to analysis result classification after be stored in my enterprise's signal processing database purchase server, enterprise signal processing data inventory respectively
Data and analysis result are saved in database by storage server, while analysis result is passed to each alarm indication by network
Terminal.
The system is by the united mode of multisensor, to judge the direction of signal and by the signal processing of multisensor
Shield the interference due to caused by branch line, then by relevant signal processing, realize Leakage of Urban Natural Gas Pipelines it is accurate calmly
Position.
The embodiment of the present application can also provide a kind of detection method of gas distributing system leakage monitoring system, this method
The time of signal is got including obtaining each sound wave sensor that each sensor module includes respectively, determination gets signal time
The first earliest sound wave sensor；
Determine the first sound wave sensor module and the first sound wave sensor where the first sound wave sensor
Orientation in the first sound wave sensor module；
It is located at the orientation in the first sound wave sensor module according to determining the first sound wave sensor and determines letter
Number source pipeline section, signal source pipeline section are adjacent the in first tube sensor and the first sound wave sensor module
Two sound wave sensor lines are parallel and are located at the outer of the first sound wave sensor and the second sound wave sensor opposite side
The pipeline section of side；
Judge that sound wave type of the second sound wave sensor at the first moment is opposite with the first sound wave sensor described
Whether the sound wave type after delay first time at the first moment is identical, determines signal source class according to sound wave type judging result
Type；Spacing of the first time between the first sound wave sensor and the second sound wave sensor divided by sound in the duct
Theoretical transmission speed.The sound wave type can be judged by the amplitude or frequency of sound wave.
Further, the first sensor component is two groups, and the second sensor component is positioned at described in two groups first
Between sensor module；
The first sound wave sensor is located in the first sensor component of the head end of the main pipeline, first sound wave
Sensor be located at close to the main pipeline head end side, sound wave type of the second sound wave sensor at the first moment with
Sound wave type after the first sound wave sensor relatively described delay first time at first moment is identical, then the signal source
Type is upstream opening and closing, valve opening signal；
The first sound wave sensor is located in the first sensor component of the end of the main pipeline, first sound wave
Sensor be located at close to the main pipeline end side, sound wave type of the second sound wave sensor at the first moment with
Sound wave type after the first sound wave sensor relatively described delay first time at first moment is identical, then the signal source
Type is downstream opening and closing, valve opening signal；
The first sound wave sensor is located in the second sensor component, and the first sound wave sensor is located at described
On branch pipeline, sound wave type of the second sound wave sensor at the first moment institute opposite with the first sound wave sensor
Sound wave type after stating delay first time at the first moment is identical, then the signal source type is the opening and closing of branch pipeline, opens
Valve signal.
The first sound wave sensor is located in the first sensor component of the head end of the main pipeline, second sound wave
The the first moment delay opposite with the first sound wave sensor of sound wave type of the sensor at the first moment is at the first time
Sound wave type afterwards is different, then the signal source type be the head end positioned at the main pipeline first sensor component and
The leakage signal on main pipeline between the second sensor component；
The first sound wave sensor is located in the first sensor component of the end of the main pipeline, first sound wave
Sensor is located remotely from the end side of the main pipeline, sound wave type of the second sound wave sensor at the first moment with
Sound wave type after the first sound wave sensor relatively described delay first time at first moment is different, then the signal source
Type is the main pipeline between the first sensor component and the second sensor component of the end of the main pipeline
On leakage signal；
The first sound wave sensor is located in the second sensor component, and the first sound wave sensor is located at described
On branch pipeline, sound wave type of the second sound wave sensor at the first moment institute opposite with the first sound wave sensor
Sound wave type after stating delay first time at the first moment is different, then the signal source type is that the leakage of branch pipeline is believed
Number.
It is calculated by the following formula distance x of the leakage point apart from branch pipeline；
In formula: Δ t is that the first sound wave sensor is obtained in the time for getting signal and the second sensor component
The sensor adjacent with the first sound wave sensor gets the difference of the time of signal, L be branch pipeline to main pipeline head end/
The length of end, v1For the actual speed that leakage sound wave signals downstream transmit, v2The reality upstream transmitted for leakage sound wave signals
Border speed.
It describes in detail below by specific example to method provided by the present application:
D as shown in Figure 2 between 3 sound wave sensors of two sound wave sensors of upstream and downstream pressurizing point and branch line away from
From；v1For the speed that leakage sound wave signals downstream transmit, v2For the speed that leakage sound wave signals upstream transmit, the v1And v2
It can be calculated by respective formula and obtain or be obtained through actual measurement；X is distance (u of the leakage point away from branch line1And u2Sensing
D distance is 1m between device, is temporarily ignored)；L is branch pipeline to gas pipeline tip length.It is assumed that each moment sound wave sensing
Device d1The signal of output is sd1；Sound wave sensor d2The signal of output is sd2；Sound wave sensor u1The signal of output is su1；Sound wave
Sensor u2The signal of output is su2；Sound wave sensor u3The signal of output is su3；Sound wave sensor c1The signal of output is sc1；
Sound wave sensor c2The signal of output is sc2.The signal of sound wave sensor output can be the amplitude or amplitude table of sound wave signals
Show.
Pump, valve opening signal are played for downstream, it arrives first at sound wave sensor d2, rear to reach sound wave sensor d1, at this time
Sound wave sensor d2As the first sound wave sensor, sound wave sensor d1As the second sound wave sensor, then ideally:
sd1(t)-sd2(t-NT)=0 (1)
That is sound wave sensor d1Signal subtract sound wave sensor d2The later signal of the NT time interval that is delayed is zero.
Wherein, the T------ sampling period；
The sampling period number of N------ delay,
For the signal that branch line comes, it arrives first at sound wave sensor u3, rear to reach sound wave sensor u1And u2, in this way I
It may determine that signal is from branch line out, then ideally:
su1(t)-su2(t-NT)=0 (2)
Pump, valve opening signal are played for upstream, it arrives first at sound wave sensor c1, rear to reach sound wave sensor c2, then manage
In the case of thinking:
sc1(t)-sc2(t-NT)=0 (3)
It thus can be the signal that pump, valve opening signal and branch line are transmitted through from being sent head end and end
Folding-Screen covers, and reduces wrong report, improves system reliability and accuracy.
For leakage signal, it swims two sides transmission from leak position up and down, because signal is first to arrive separately at sound wave biography
Sensor d1And u1, rear to reach sound wave sensor d2And u2.At this point, formula (1) and (2) are not zero certainly.
For two sound wave sensor d of downstream signal1And d2, it is assumed that
sd(t)=sd1(t)-sd2(t-NT) (4)
For two sound wave sensor u in downstream1And u2, it is assumed that
su(t)=su1(t)-su2(t-NT) (5)
D is then reached according to leakage signal1And u2At the time of T1And T2, Δ t=T1-T2, leak position can be positioned:
Each on-site data processing remote transmission terminal includes GPS (global satellite clock synchronization system) receiver, is reached
Leakage discovery and time synchronization function, therefore line leakage system can also continue to visit under communicating interrupt or deterioration extent
Look into leakage.The leakage that each on-site data processing remote transmission terminal is collected into is collected after communication restores, then by voice band data server
Event and time, to calculate leak position.
In the case where allowing at the scene, system has the pressure of collection conduit, flow value, and the auxiliary as leakage monitoring is commented
Estimate parameter.The discovery and judgement slowly leaked for corrosion failure etc. in this way has good effect.Meanwhile it is anti-
Only reported by mistake caused by the accidental low-frequency sound source on pipeline.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of gas distributing system leakage monitoring system characterized by comprising
At least two groups the first sound wave sensor module, sensor module described at least two groups are respectively positioned on the main pipeline of gas distributing system
On, the first sound wave sensor module includes two sound wave sensors in fixed spacing setting；
Second sound wave sensor module, the second sound wave sensor module are located at main pipeline and the branch pipeline week of natural gas grid
It encloses；The second sound wave sensor module includes three sound wave sensors, and two of them sound wave sensor is located at natural gas
On the main pipeline of net and branch pipeline two sides are distributed in, another sound wave sensor is located on the branch pipeline, and three sound waves pass
In sensor it is two neighboring between spacing it is equal and between two sound wave sensors in the first sound wave sensor module
Spacing is equal；
Wherein, each sensor module can communicate with independent sound wave leakage monitoring system base station be connected respectively；Each sound wave leakage prison
Examining system base station is connected with cloud data processing platform (DPP) respectively.
2. gas distributing system leakage monitoring system according to claim 1, which is characterized in that each sensor module respectively wraps
The each sound wave sensor contained is respectively by independent sound wave signals conditioning module and sound wave signals data communication module
Realization can be communicated with sound wave leakage monitoring system base station to be connected.
3. gas distributing system leakage monitoring system according to claim 2, which is characterized in that sound wave leakage monitoring system
System base station includes the multichannel sound wave signals processing module being electrically connected to each other and sound wave signals storage remote transmission terminal；The sound wave letter
Number communication module is connected with the multichannel sound wave signals processing module.
4. gas distributing system leakage monitoring system according to claim 3, which is characterized in that at the multichannel sound wave signals
Reason module is connected with GPS module.
5. gas distributing system leakage monitoring system according to claim 1, which is characterized in that the cloud data processing platform (DPP)
It is connected with enterprise's signal processing database storage server, enterprise's signal processing database storage server is connected with multiple
Alarm indication terminal.
6. gas distributing system leakage monitoring system according to claim 1, which is characterized in that further include being set to the day
Pressure sensor and flow sensor on the main pipeline of right gas pipe network and the branch pipeline of/gas distributing system, the pressure
Sensor and the flow sensor can be communicated with the cloud data processing platform (DPP) respectively to be connected.
7. a kind of detection method of gas distributing system leakage monitoring system described in claim 1-6 any one, which is characterized in that
The described method includes:
The time that each sound wave sensor that each sensor module includes gets signal is obtained respectively, and determination gets signal time
The first earliest sound wave sensor；
Determine that the first sound wave sensor module and the first sound wave sensor where the first sound wave sensor are located at
Orientation in the first sound wave sensor module；
According to determining the first sound wave sensor be located at the orientation in the first sound wave sensor module determine signal come
Source capsule section, signal source pipeline section are adjacent second sound in first tube sensor and the first sound wave sensor module
Wave sensor line is parallel and is located at the outside of the first sound wave sensor and the second sound wave sensor opposite side
Pipeline section；
Judge sound wave type of the second sound wave sensor at the first moment opposite with the first sound wave sensor described first
Whether the sound wave type after delay first time at moment is identical, determines signal source type according to sound wave type judging result；Institute
State reason of the spacing divided by sound in the duct at the first time between the first sound wave sensor and the second sound wave sensor
By transmission speed.
8. the detection method of gas distributing system leakage monitoring system according to claim 7, which is characterized in that described first
Sensor module is two groups, and the second sensor component is between first sensor component described in two groups；
The first sound wave sensor is located in the first sensor component of the head end of the main pipeline, the first sound wave sensing
Device be located at close to the main pipeline head end side, sound wave type of the second sound wave sensor at the first moment with it is described
Sound wave type after the first sound wave sensor relatively described delay first time at first moment is identical, then the signal source type
For upstream opening and closing, valve opening signal；
The first sound wave sensor is located in the first sensor component of the end of the main pipeline, the first sound wave sensing
Device be located at close to the main pipeline end side, sound wave type of the second sound wave sensor at the first moment with it is described
Sound wave type after the first sound wave sensor relatively described delay first time at first moment is identical, then the signal source type
For downstream opening and closing, valve opening signal；
The first sound wave sensor is located in the second sensor component, and the first sound wave sensor is located at the branch line
On pipeline, sound wave type of the second sound wave sensor at the first moment opposite with the first sound wave sensor described
Sound wave type after delay first time at one moment is identical, then the signal source type is the opening and closing of branch pipeline, valve opening letter
Number.
9. the detection method of gas distributing system leakage monitoring system according to claim 8, which is characterized in that described first
Sound wave sensor is located in the first sensor component of the head end of the main pipeline, and the second sound wave sensor is at the first moment
When sound wave type and the first sound wave sensor relatively described delay first time at first moment after sound wave type it is different,
Then the signal source type is positioned at the first sensor component of the head end of the main pipeline and the second sensor group
The leakage signal on main pipeline between part；
The first sound wave sensor is located in the first sensor component of the end of the main pipeline, the first sound wave sensing
Device is located remotely from the end side of the main pipeline, sound wave type of the second sound wave sensor at the first moment with it is described
Sound wave type after the first sound wave sensor relatively described delay first time at first moment is different, then the signal source type
For on the main pipeline between the first sensor component of the end of the main pipeline and the second sensor component
Leakage signal；
The first sound wave sensor is located in the second sensor component, and the first sound wave sensor is located at the branch line
On pipeline, sound wave type of the second sound wave sensor at the first moment opposite with the first sound wave sensor described
Sound wave type after delay first time at one moment is different, then the signal source type is the leakage signal of branch pipeline.
10. the detection method of gas distributing system leakage monitoring system according to claim 9, which is characterized in that by with
Lower formula calculates distance x of the leakage point apart from branch pipeline；
In formula: Δ t obtained for the first sound wave sensor get signal time and the second sensor component in institute
The difference that the adjacent sensor of the first sound wave sensor gets the time of signal is stated, L is branch pipeline to main pipeline head end/end
Length, v1For the actual speed that leakage sound wave signals downstream transmit, v2The practical speed upstream transmitted for leakage sound wave signals
Degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588258.0A CN110145694A (en) | 2019-07-02 | 2019-07-02 | A kind of gas distributing system leakage monitoring system and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588258.0A CN110145694A (en) | 2019-07-02 | 2019-07-02 | A kind of gas distributing system leakage monitoring system and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110145694A true CN110145694A (en) | 2019-08-20 |
Family
ID=67596791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910588258.0A Pending CN110145694A (en) | 2019-07-02 | 2019-07-02 | A kind of gas distributing system leakage monitoring system and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145694A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836331A (en) * | 2019-10-12 | 2020-02-25 | 吉林省百瑞生科技发展有限公司 | System and method for monitoring leakage of pipelines and valve wells in soil |
| CN111365625A (en) * | 2020-04-13 | 2020-07-03 | 安徽理工大学 | Pipeline leakage sound wave positioning method based on delay summation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10281921A (en) * | 1997-04-07 | 1998-10-23 | Hitachi Ltd | Method and device for monitoring leakage of gas piping |
| CN101319955A (en) * | 2007-06-07 | 2008-12-10 | 北京昊科航科技有限责任公司 | Method for extracting leakage of pipe monitored by infrasonic wave |
| CN101832472A (en) * | 2010-06-12 | 2010-09-15 | 中国石油化工股份有限公司管道储运分公司 | System implementing pipeline leak detection by utilizing infrasonic wave |
| US20150308919A1 (en) * | 2014-04-28 | 2015-10-29 | Northeastern University | Intelligent adaptive system and method for monitoring leakage of oil pipeline networks based on big data |
| CN107023755A (en) * | 2017-05-16 | 2017-08-08 | 北京化工大学 | Pipeline network leak monitoring and positioning method and system |
| CN107763441A (en) * | 2017-11-29 | 2018-03-06 | 常熟市电子仪器厂 | Loop network leak detection apparatus and its detection method |
| CN210141480U (en) * | 2019-07-02 | 2020-03-13 | 北京中计新业科技发展有限公司 | Natural gas pipe network leakage monitoring system |
-
2019
- 2019-07-02 CN CN201910588258.0A patent/CN110145694A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10281921A (en) * | 1997-04-07 | 1998-10-23 | Hitachi Ltd | Method and device for monitoring leakage of gas piping |
| CN101319955A (en) * | 2007-06-07 | 2008-12-10 | 北京昊科航科技有限责任公司 | Method for extracting leakage of pipe monitored by infrasonic wave |
| CN101832472A (en) * | 2010-06-12 | 2010-09-15 | 中国石油化工股份有限公司管道储运分公司 | System implementing pipeline leak detection by utilizing infrasonic wave |
| US20150308919A1 (en) * | 2014-04-28 | 2015-10-29 | Northeastern University | Intelligent adaptive system and method for monitoring leakage of oil pipeline networks based on big data |
| CN107023755A (en) * | 2017-05-16 | 2017-08-08 | 北京化工大学 | Pipeline network leak monitoring and positioning method and system |
| CN107763441A (en) * | 2017-11-29 | 2018-03-06 | 常熟市电子仪器厂 | Loop network leak detection apparatus and its detection method |
| CN210141480U (en) * | 2019-07-02 | 2020-03-13 | 北京中计新业科技发展有限公司 | Natural gas pipe network leakage monitoring system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836331A (en) * | 2019-10-12 | 2020-02-25 | 吉林省百瑞生科技发展有限公司 | System and method for monitoring leakage of pipelines and valve wells in soil |
| CN110836331B (en) * | 2019-10-12 | 2020-12-04 | 中国石油天然气集团有限公司 | System and method for monitoring leakage of pipelines and valve wells in soil |
| CN111365625A (en) * | 2020-04-13 | 2020-07-03 | 安徽理工大学 | Pipeline leakage sound wave positioning method based on delay summation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9791345B2 (en) | Pipeline leak location using ultrasonic flowmeters | |
| JP5846015B2 (en) | Leak detection method, leak detection method, leak detection device and leak detection device | |
| CA2158669C (en) | Underground conduit defect localization | |
| CN106151887A (en) | A kind of gas oil pipe leakage comprehensive monitor system | |
| US9939344B2 (en) | Detecting leaks in a fluid distribution system | |
| US9164065B2 (en) | Automated fault localization in pipelines and electrical power transmission lines | |
| CN102563361A (en) | Device and method for detecting and positioning leakage of gas transmission pipeline based on conventional data and sound wave signals | |
| CN102997045B (en) | Optical fiber sensing natural gas pipeline leakage event identification method and device | |
| CN107023755B (en) | Pipeline network leak monitoring and positioning method and system | |
| US20100085211A1 (en) | Self-powered in-pipe fluid meter and piping network comprising a plurality of such fluid meters | |
| CN108758353A (en) | Distribution type fiber-optic many reference amounts pipe leakage positioning alarm system and leakage locating method | |
| CN102997051A (en) | Optical fiber sensor-based natural gas pipeline leakage monitoring method and system | |
| CN106015949A (en) | Sound wave pipeline leakage monitoring system | |
| CN110145694A (en) | A kind of gas distributing system leakage monitoring system and detection method | |
| CN102997061A (en) | Optical fiber sensor-based natural gas pipeline leakage monitoring system | |
| CN102997056B (en) | Method for measuring distance between natural gas pipe leakage detecting sensors | |
| CN102997057A (en) | Optical fiber sensor-based natural gas pipeline leakage monitoring method and system and installation method for system | |
| CN102997055B (en) | Leakage point locating method and system of optical fiber sensing natural gas pipeline leakage monitoring system | |
| CN102997053A (en) | System for measuring propagation speed of natural gas pipe leakage vibration wave | |
| CN102997063A (en) | Natural gas pipeline leakage monitoring method based on optical fiber sensing | |
| CN103047541A (en) | Optical fiber sensing natural gas pipeline leakage accident recognition device | |
| CN210141480U (en) | Natural gas pipe network leakage monitoring system | |
| CN202252871U (en) | System for measuring vibration wave propagation velocity in case of natural gas pipeline leakage | |
| CN202338780U (en) | Optical fiber sensing natural gas pipeline leakage incident recognition device | |
| CN202252869U (en) | Natural gas pipeline leakage monitoring system based on fiber sensing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |