CN109681787B - A kind of pipeline leakage positioning system and method - Google Patents
A kind of pipeline leakage positioning system and method Download PDFInfo
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- CN109681787B CN109681787B CN201910045559.9A CN201910045559A CN109681787B CN 109681787 B CN109681787 B CN 109681787B CN 201910045559 A CN201910045559 A CN 201910045559A CN 109681787 B CN109681787 B CN 109681787B
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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
- F17D5/02—Preventing, monitoring, or locating loss
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- 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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of pipeline leakage positioning systems, including memory module；It is arranged on pipeline by pre-determined distance, for negative pressure wave signal to be reached to the first sensor of memory module；It is arranged on pipeline by pre-determined distance, for stress wave signal to be reached to the second sensor of memory module；For calculating leakage point first position on pipeline, and the computing module according to the leakage point second position on stress wave signal calculating pipeline according to negative pressure wave signal；For determining whether the difference of first position and the second position is in the judgment module in preset range；For exporting the first alarm signal when the difference of first position and the second position is in preset range, when first position and the second position are not in preset range, the alarm module of the second alarm signal is exported.Pipeline leakage positioning system provided by the invention can be realized the precise positioning of leakage.The present invention also provides a kind of pipeline leakage positioning methods, have same technical effect.
Description
Technical field
The present invention relates to Discussion on Pipe Leakage Detection Technology field, in particular to a kind of pipeline leakage positioning system and method.
Background technique
In water resource transport, pipeline transportation is most convenient and economic means of transportation.With water supply line transport it is swift and violent
The reason of development, pipe leakage is a most important problem in water supply line transportation safety, is occurred mainly includes that pipeline is old
Age, corrosive pipeline and artificial destruction etc..Pipe leakage will will lead to a series of problem, such as property loss, environmental disruption
Even endanger citizen's safety.Therefore, we increase the research dynamics to it is necessary to improve the attention degree to pipe leakage,
Water supply network leakage detection and location technology is improved, leakage and precise positioning can be detected in time, reduces water supply line leak rate.
Traditional leak water detdction equipment is not scientific and advanced enough, and intelligence degree is low, and leak detection timeliness is poor, to operating personnel
Experience degree of dependence is big, and measurement leak source is time-consuming more, and therefore, underground water pipe network maintenance and inspection are more using skilled worker, excavate range greatly, apply
The work period factory, fund waste it is serious.
In order to solve the situation, occurs more intelligent checking system in the prior art, still, the accurate of leakage point is determined
Position is always the difficult point during pipeline leakage testing.
Summary of the invention
In view of this, the first purpose of this invention is to provide a kind of pipeline leakage positioning system, can be realized to pipe
Road leakage point ground precise positioning.The present invention also provides a kind of pipeline leakage positioning methods, have same technical effect.
The technical solution that the present invention solves technical problem is as follows:
A kind of pipeline leakage positioning system, including,
Memory module；
It is arranged on pipeline by pre-determined distance, for negative pressure wave signal to be reached to the first sensing of the memory module
Device；
It is arranged on the pipeline by the pre-determined distance, for stress wave signal to be reached the second of the memory module
Sensor；
For calculating leakage point first position on the pipeline according to the negative pressure wave signal in the memory module, with
And the computing module of the leakage point second position on the pipeline is calculated according to the stress wave signal in the memory module；
For determining whether the difference of the first position and the second position is in the judgment module in preset range；
For when the difference of the first position and the second position is in preset range, output first to be alarmed
When signal, the first position and the second position are not in preset range, the alarm module of the second alarm signal is exported.
Preferably, the computing module, for calculating the pipe according to the negative pressure wave signal in the memory module
Leakage point first position on road, is specifically calculated as follows,
Wherein, d is distance of the leakage point away from a first sensor；L length between adjacent two first sensor；V is negative pressure
Velocity of wave propagation；Δ t is the time difference that suction wave travels to two first sensors from leakage point, Δ t=t1-t2。
Preferably, the computing module, for calculating the pipe according to the stress wave signal in the memory module
The leakage point second position on road, is specifically calculated as follows,
Wherein, l is distance of the leakage point away from a second sensor；L length between adjacent two second sensor；C is stress
Velocity of wave propagation；Δ T is the time difference that stress wave travels to two second sensors from leakage point, Δ T=T1-T2。
Preferably, further include,
For the record time t when the first sensor gets the suction wave, and in the second sensor
The timing module of time T is recorded when getting the stress wave；
Locating module for being positioned to the first sensor and second sensor.
Preferably, the memory module is that module and/or cloud storage module is locally stored.
Preferably, further include,
On the terminal device, and module and/or the cloud storage can be locally stored to described by safety command in installation
The client that leak data in module accesses.
Preferably, further include,
For analyzing the leak data being locally stored in module and/or the cloud storage module, and export
Leak the analysis module to take place frequently a little.
A kind of pipeline leakage positioning method, includes the following steps,
First sensor for obtaining negative pressure wave signal is set on pipeline by pre-determined distance；
Second sensor for obtaining stress wave signal is set on the pipeline by the pre-determined distance；
It is according to leakage point first position, calculating formula on the negative pressure wave signal calculating pipeline,
Wherein, d is distance of the leakage point away from a first sensor；L length between adjacent two first sensor；V is negative pressure
Velocity of wave propagation；Δ t is the time difference that suction wave travels to two first sensors from leakage point, Δ t=t1-t2；
It is according to the leakage point second position, calculating formula on the stress wave signal calculating pipeline,
Wherein, l is distance of the leakage point away from a second sensor；L length between adjacent two second sensor；C is stress
Velocity of wave propagation；Δ T is the time difference that stress wave travels to two second sensors from leakage point, Δ T=T1-T2；
Calculate the difference X of the first position Yu the second position, wherein
X=| l-d |；
When difference X is in preset range Y, the first alarm signal is exported, when X be in outside preset range Y, exports the
Two alarm signals.
Preferably,
After the first sensor and second sensor installation are installed, the first sensor and institute are obtained
The position of second sensor is stated, and is stored；
Acquisition time is recorded when obtaining negative pressure wave signal；
Acquisition time is recorded when obtaining stress wave signal.
Preferably,
The position data of the leakage point of storage is analyzed, and exports the position that leakage takes place frequently a little.
Pipeline leakage positioning system provided by the present invention, by pre-determined distance be arranged on pipeline be arranged first sensor with
Second sensor, first sensor are used to obtain the default suction wave away between, second sensor for obtain pre-determined distance it
Between stress wave；Computing module calculates leakage point first position on pipeline according to negative pressure wave signal, is calculated according to stress wave signal
The leakage point second position on pipeline；Then determine whether the difference of first position and the second position is in default by judgment module
In range；When the difference of first position and the second position is in the preset range, can not only accurately determine this it is default away from
There is leakage point from interior, avoid reporting by mistake, can also reduce the range of leakage point, realizes and be accurately positioned.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of schematic diagram of embodiment of pipeline leakage positioning system provided in an embodiment of the present invention；
Fig. 2 is the flow chart of pipeline leakage positioning method provided in an embodiment of the present invention.
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, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please as shown in Figure 1, a kind of pipeline leakage positioning system of the present invention, including, memory module 100；It is set by pre-determined distance
Set on pipeline 10, for by negative pressure wave signal (at pipeline leakage generate transient pressure bust, due to fluid flowing it is continuous
Property, the fluid in pipeline will not change flow velocity immediately, and pressure difference of the fluid between leakage point and adjacent areas at both sides can be led
Cause fluid to fill to leak region, form suction wave) first sensor 200 of memory module 100 is reached, first passes in the present embodiment
Sensor is pressure transmitter；By pre-determined distance be arranged on pipeline 10, for by stress wave signal (at pipeline leakage, fluid because
Internal and external pressure difference and spray outward, friction tube wall generate vibration, in the form of stress wave along tube wall propagate) reach memory module
100 second sensor 300, the second sensor in the present embodiment are shockwave sensor；For according in memory module 100
Negative pressure wave signal calculate leakage point first position on pipeline, and according to the stress wave signal computer tube in memory module 100
The computing module 400 of the leakage point second position on road；For determining whether the difference of first position and the second position is in default
Judgment module 500 in range；For exporting first when the difference of first position and the second position is in preset range
When alarm signal, first position and the second position are not in preset range, the alarm module 600 of the second alarm signal is exported.
The first sensing is arranged by pre-determined distance on pipeline 10 for pipeline leakage positioning system provided by the embodiment of the present invention
Device 200 and second sensor 300, first sensor 200 are used to obtain the default suction wave away between, and second sensor 300 is used
Stress wave between acquisition pre-determined distance；Computing module 400 calculates on pipeline 10 leakage point first according to negative pressure wave signal
It sets, the leakage point second position on pipeline 10 is calculated according to stress wave signal；Then by judgment module 500 determine first position with
Whether the difference of the second position is in preset range；When the difference of first position and the second position is in preset range
When, it can not only accurately determine in the pre-determined distance leakage point occur, avoid reporting by mistake, can also reduce the range of leakage point, it is real
It is now accurately positioned, alarm module 600 exports the first alarm signal, when the difference of first position and the second position is in default model
When being not in preset range when enclosing interior, alarm module 600 exports the second alarm signal.
Wherein, the computing module 400 in the embodiment of the present invention calculates on pipeline according to the negative pressure wave signal in memory module
Leakage point first position, is specifically calculated as follows,
Wherein, d is distance of the leakage point away from a first sensor；L length between adjacent two first sensor；V is negative pressure
Velocity of wave propagation；Δ t is the time difference that suction wave travels to two first sensors from leakage point, Δ t=t1-t2。
Wherein, the speed that suction wave is propagated in pipeline is decided by the elasticity of the elasticity of liquid, the density of liquid and tubing,
Specifically,
In formula, v manages the spread speed of interior suction wave；K is the volume modulus of liquid；ρ is the density of liquid；E is pipe
The coefficient of elasticity of material；D is the diameter of pipeline；E is pipe thickness；C1For correction factor related with pipeline constraint condition.
Wherein, collected two signals of two first sensors are rA(n) and rB(n), then the cross-correlation function of two signals
For,
Work as m=m0When, RAB(m) maximum value is reached, then Δ t=m0, leakage point position is calculated by formula (1).
The position that leakage point is calculated by formula (1) to (3), so that the calculating of leakage point is more accurate.
Computing module 400 calculates the leakage point second position on pipeline according to the stress wave signal in memory module, specifically presses
Following formula calculates,
Wherein, l is distance of the leakage point away from a second sensor；L length between adjacent two second sensor；C is stress
Velocity of wave propagation；Δ T is the time difference that stress wave travels to two second sensors from leakage point, Δ T=T1-T2。
Pipeline leakage positioning system provided in an embodiment of the present invention further includes, negative for getting in first sensor 200
Press wave when record time t, and when second sensor 300 gets stress wave record time T, timing module 700；With
And the locating module 800 for being positioned to first sensor 200 and second sensor 300.
Wherein, timing module 700 and locating module 800 can preferably use GPS positioning system.
Memory module 100 in the embodiment of the present invention is that module and/or cloud storage module is locally stored.
Pipeline leakage positioning system provided in an embodiment of the present invention further includes being mounted on terminal device 102, and can
The client 900 that can be accessed to the leak data being locally stored in module and/or cloud storage module by safety command.
Wherein, terminal device 102 can be computer, mobile phone or other terminal devices.Staff can pass through terminal
The case where equipment 102 accesses the related data in cloud storage module, and staff is enabled to understand pipe leakage whenever and wherever possible.
Pipeline leakage positioning system provided in an embodiment of the present invention further includes, for module being locally stored and/or cloud is deposited
Leak data in storage module is analyzed, and exports the analysis module 101 that leakage takes place frequently a little.
The setting of analysis module 101 can analyze the leak data of Target pipe, export leakage frequency according to analysis
Point is sent out, staff can take place frequently according to leakage understands the use environment situation of the segment pipe and the service life of pipeline,
And the replacement cycle of the segment pipe is adjusted according to the service life of pipeline, to reduce the burst of pipe leakage situation in time.
It please be as shown in Fig. 2, the embodiment of the present invention also provides a kind of pipeline leakage positioning method, the pipe of base in this present embodiment
Road leakage positioning system, includes the following steps,
S101., first sensor for obtaining negative pressure wave signal is set on pipeline by pre-determined distance；
S102., second sensor for obtaining stress wave signal is set on pipeline by pre-determined distance；
S103. it is according to leakage point first position, calculating formula on negative pressure wave signal calculating pipeline,
Wherein, d is distance of the leakage point away from a first sensor；L length between adjacent two first sensor；V is negative pressure
Velocity of wave propagation；Δ t is the time difference that suction wave travels to two first sensors from leakage point, Δ t=t1-t2；
Wherein, v is calculated by formula (2)；Δ t is calculated by formula (3).
S104. it is according to the leakage point second position, calculating formula on stress wave signal calculating pipeline,
Wherein, l is distance of the leakage point away from a second sensor；L length between adjacent two second sensor；C is stress
Velocity of wave propagation；Δ T is the time difference that stress wave travels to two second sensors from leakage point, Δ T=T1-T2；
Wherein, it is calculated and is let out by formula (4) after being handled using the stress wave signal that wavelet packet acquires second sensor
Leak source position；
Wherein, signal is analyzed using wavelet packet analysis method, can more preferably utilizes useful information, gives up noise spot,
More conducively precise positioning；
S105. the difference X of first position and the second position is calculated, wherein
X=| l-d |；
S106. when difference X is in preset range Y, the first alarm signal is exported, when X is in outside preset range Y,
Export the second alarm signal.
Wherein, it should be noted that step S101 and step S102 sequencing are adjustable, can also carry out simultaneously, walk
Rapid S103 and step S104 sequencing are adjustable, can also carry out simultaneously.
In the embodiment of the present invention, installation first sensor and second sensor installation after, obtain first sensor with
And the position of second sensor, and stored；Acquisition time is recorded when obtaining negative pressure wave signal；Obtaining stress wave signal
Shi Jilu acquisition time.
In the embodiment of the present invention, further include the position data of the leakage point of analysis storage, and exports the position that leakage takes place frequently a little
The step of setting.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (8)
1. a kind of pipeline leakage positioning system, which is characterized in that including,
Memory module；
It is arranged on pipeline by pre-determined distance, for negative pressure wave signal to be reached to the first sensor of the memory module；
It is arranged on the pipeline by the pre-determined distance, for stress wave signal to be reached to the second sensing of the memory module
Device；
For calculating leakage point first position on the pipeline, Yi Jigen according to the negative pressure wave signal in the memory module
The computing module of the leakage point second position on the pipeline is calculated according to the stress wave signal in the memory module；
For determining whether the difference of the first position and the second position is in the judgment module in preset range；
For exporting the first alarm signal when the difference of the first position and the second position is in preset range
Number, when the first position and the second position are not in preset range, export the alarm module of the second alarm signal；
For calculating leakage point first position on the pipeline according to the negative pressure wave signal in the memory module, specifically press
Following formula calculates,
Wherein, d is distance of the leakage point away from a first sensor；L length between adjacent two first sensor；V is suction wave biography
Broadcast speed；Δ t is the time difference that suction wave travels to two first sensors from leakage point, Δ t=t1-t2；
Wherein, the speed that suction wave is propagated in pipeline is decided by the elasticity of the elasticity of liquid, the density of liquid and tubing, specifically
For,
In formula, v manages the spread speed of interior suction wave；K is the volume modulus of liquid；ρ is the density of liquid；E is tubing
Coefficient of elasticity；D is the diameter of pipeline；E is pipe thickness；C1For correction factor related with pipeline constraint condition；
Wherein, collected two signals of two first sensors are rA(n) and rB(n), then the cross-correlation function of two signals is,
The computing module, for calculating on the pipeline leakage point the according to the stress wave signal in the memory module
Two positions, are specifically calculated as follows,
Wherein, l is distance of the leakage point away from a second sensor；L length between adjacent two second sensor；C is stress wave biography
Broadcast speed；Δ T is the time difference that stress wave travels to two second sensors from leakage point, Δ T=T1-T2。
2. system according to claim 1, which is characterized in that further include,
It is obtained for recording time t when the first sensor gets the suction wave, and in the second sensor
The timing module of time T is recorded when to the stress wave；
Locating module for being positioned to the first sensor and second sensor.
3. system according to claim 2, which is characterized in that the memory module is module to be locally stored and/or cloud is deposited
Store up module.
4. system according to claim 3, which is characterized in that further include,
On the terminal device, and module and/or the cloud storage module can be locally stored to described by safety command in installation
The client that interior leak data accesses.
5. system according to claim 4, which is characterized in that further include,
For analyzing the leak data being locally stored in module and/or the cloud storage module, and export leakage
The analysis module to take place frequently a little.
6. a kind of pipeline leakage positioning method, which is characterized in that include the following steps,
First sensor for obtaining negative pressure wave signal is set on pipeline by pre-determined distance；
Second sensor for obtaining stress wave signal is set on the pipeline by the pre-determined distance；
It is according to leakage point first position, calculating formula on the negative pressure wave signal calculating pipeline,
Wherein, d is distance of the leakage point away from a first sensor；L length between adjacent two first sensor；V is suction wave biography
Broadcast speed；Δ t is the time difference that suction wave travels to two first sensors from leakage point, Δ t=t1-t2；
Wherein, the speed that suction wave is propagated in pipeline is decided by the elasticity of the elasticity of liquid, the density of liquid and tubing, specifically
For,
In formula, v manages the spread speed of interior suction wave；K is the volume modulus of liquid；ρ is the density of liquid；E is tubing
Coefficient of elasticity；D is the diameter of pipeline；E is pipe thickness；C1For correction factor related with pipeline constraint condition；
Wherein, collected two signals of two first sensors are rA(n) and rB(n), then the cross-correlation function of two signals is,
It is according to the leakage point second position, calculating formula on the stress wave signal calculating pipeline,
Wherein, l is distance of the leakage point away from a second sensor；L length between adjacent two second sensor；C is stress wave biography
Broadcast speed；Δ T is the time difference that stress wave travels to two second sensors from leakage point, Δ T=T1-T2；
Calculate the difference X of the first position Yu the second position, wherein
X=| l-d |；
When difference X is in preset range Y, the first alarm signal is exported, when X is in outside preset range Y, the second report of output
Alert signal.
7. according to the method described in claim 6, it is characterized in that,
After the first sensor and second sensor installation are installed, the first sensor and described the are obtained
The position of two sensors, and stored；
Acquisition time is recorded when obtaining negative pressure wave signal；
Acquisition time is recorded when obtaining stress wave signal.
8. the method according to the description of claim 7 is characterized in that
The position data of the leakage point of storage is analyzed, and exports the position that leakage takes place frequently a little.
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