CN106481989A - pipeline leakage detection method and device - Google Patents
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- CN106481989A CN106481989A CN201611094634.3A CN201611094634A CN106481989A CN 106481989 A CN106481989 A CN 106481989A CN 201611094634 A CN201611094634 A CN 201611094634A CN 106481989 A CN106481989 A CN 106481989A
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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
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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Abstract
Pipeline leakage detection method provided in an embodiment of the present invention and device include：Receive the pipeline that multiple sensors obtain respectively pressure value along the line；According to the change of described pressure value, obtain the primary election position of leakage point, determine each two sensors of the both sides of primary election position of described leakage point from the plurality of sensor；The pressure value that two sensors of the side according to described primary election position send obtains first pressure gradient equations, and the pressure value that two sensors of the opposite side according to described primary election position send obtains second pressure gradient equations；According to described first pressure gradient equations and second pressure gradient equations, obtain the primary importance of described leakage point.Compared with existing pipeline leakage detection method, pipeline leakage detection method provided in an embodiment of the present invention can reduce laying cost while realizing being accurately positioned, and has stronger promotional value.
Description
Technical field
The application is related to detection technique field, in particular to a kind of pipeline leakage detection method and device.
Background technology
The flourishing of rapid development with China's economic and transportation industry, pipeline transportation has become the highway that continues, railway, water transport
With transportation trade the fifth-largest after aviation.But the growth due to pipeline pipe age, aging burn into geological disaster and artificial destruction
The pipe leakage accident causing etc. reason happens occasionally, and while causing economic loss and the wasting of resources, also environment is caused
Larger threat.
At present, the domestic method that pipe leakage is detected includes：Flow equilibrium method, distribution type fiber-optic method etc., flow
According to pipeline, counterbalanced procedure imports and exports whether flow balances to detect whether pipeline leaks, but cannot realize determining of leakage point
Position；Distribution type fiber-optic method by with one distribution type fiber-optic of pipeline parallel laid, by obtain pipeline temperature change along the line determine
Leak position, the method sensitivity is higher, but laying is relatively costly, and not easy care.
Content of the invention
In view of this, embodiments provide a kind of pipeline leakage detection method and device, let out with existing pipeline
Missing inspection method is compared, and reduces paving while pipeline leakage detection method provided in an embodiment of the present invention is capable of being accurately positioned
It is set as this.
For achieving the above object, embodiments provide a kind of pipeline leakage detection method, methods described includes：Connect
Receive the pipeline that multiple sensors obtain respectively pressure value along the line；According to the change of described pressure value, obtain the primary election of leakage point
Position, determines each two sensors of the both sides of primary election position of described leakage point from the plurality of sensor；According to described
The pressure value that two sensors of the side of primary election position send obtains first pressure gradient equations, according to described primary election position
The pressure value that two sensors of opposite side send obtains second pressure gradient equations；According to described first pressure gradient equations with
And second pressure gradient equations, obtain the primary importance of described leakage point.
The embodiment of the present invention additionally provides a kind of pipeline leakage testing device, is applied to controller, and described device includes：Pressure
Force value receiver module, the pressure value along the line for receiving the pipeline that multiple sensors obtain respectively；Primary election position obtains module, uses
In the change according to described pressure value, obtain the primary election position of leakage point, determine described leakage point from the plurality of sensor
The both sides of primary election position each two sensors；Gradient equations obtains module, for the side according to described primary election position
The pressure value acquisition first pressure gradient equations that two sensors send, two sensings of the opposite side according to described primary election position
The pressure value that device sends obtains second pressure gradient equations；Primary importance computing module, for according to described first pressure gradient
Equation and second pressure gradient equations, obtain the primary importance of described leakage point.
The having the beneficial effect that of pipeline leakage detection method provided in an embodiment of the present invention and device：
Pipeline leakage detection method provided in an embodiment of the present invention and device include：Receive what multiple sensors obtained respectively
Pipeline pressure value along the line.Change according to pressure value, it is possible to obtain the primary election position of leakage point, and from multiple sensors really
Determine each two sensors of primary election position both sides.Obtain first pressure ladder according to each two sensors of primary election position both sides respectively
Degree equation and second pressure gradient equations.Obtain leakage further according to first pressure gradient equations and second pressure gradient equations
The primary importance of point.Pipeline leakage detection method provided in an embodiment of the present invention by multiple sensors can by pipeline be divided into by
The segment that sensor separates, the change of the pressure value then obtaining further according to sensor determines the segment that pipe leakage point is located,
Then the pressure value that the sensor according to this segment both sides obtains positions to pipe leakage point, with the inspection of existing pipe leakage
Survey method is compared, and pipeline leakage detection method provided in an embodiment of the present invention can reduce laying while realizing being accurately positioned
Cost, has stronger promotional value.
Brief description
For the clearer explanation embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of application, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of pipeline leakage detection method provided in an embodiment of the present invention；
Fig. 2 is the structural representation of the multiple sensor distributions between two pressurizing points；
Fig. 3 is the comparison diagram of nominal situation and pressure distribution during leakage operating mode；
Fig. 4 is a kind of flow chart of the pipeline leakage detection method of specific embodiment offer of the embodiment of the present invention；
Fig. 5 is the flow chart of the method obtaining suction wave velocity of wave function；
Fig. 6 is the curve synoptic diagram of suction wave velocity of wave Function Fitting；
Fig. 7 is the schematic block diagram of pipe leakage device provided in an embodiment of the present invention；
Fig. 8 is a kind of schematic structure of the pipeline leakage testing device of specific embodiment offer of the embodiment of the present invention
Block diagram；
Fig. 9 is the schematic block diagram of device corresponding with Fig. 5.
Specific embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description is it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.Right below
The detailed description of the embodiments herein providing in the accompanying drawings is not intended to limit claimed scope of the present application, but
It is merely representative of the selected embodiment of the application.Based on embodiments herein, those skilled in the art are not making creativeness
The every other embodiment being obtained on the premise of work, broadly falls into the scope of the application protection.
Refer to Fig. 1, Fig. 1 shows pipeline leakage detection method provided in an embodiment of the present invention, comprises the steps：
Step S110, the pipeline that the multiple sensors 10 of reception obtain respectively pressure value along the line.
In pipeline transportation it is preferable that in long-distance oil ＆ gas pipeline, a segment pipe often connects two pressurizing points 20, many
Individual sensor 10 then can be uniformly distributed between two pressurizing points 20 it is also possible to non-uniform Distribution, and near pressurizing point
20 input and outfan can be respectively mounted two sensors 10, and details refer to Fig. 2, adjacent in multiple sensors 10
Spacing between two sensors 10 can be n, and can continuously arrange two sensors 10 near the position of pressurizing point 20.
Preferably, the quantity of multiple sensors 10 can be more than or equal to eight.
Each in multiple sensors 10 all obtains pipeline pressure value along the line, and pressure value is sent to controller.Logical
Cross the laying of multiple sensors 10, suitably shorten the interval of barometric gradient, the error of leak point positioning can be reduced.
Sensor 10 can send, to controller, the pressure value obtaining it is also possible to pass through communication by way of being wirelessly transferred
The mode of fiber-optic transfer sends, to controller, the pressure value obtaining, and multiple sensors can be concatenated by telecommunication optical fiber, is conducive to dropping
Low laying cost.It is limitation of the present invention that the concrete transmission means of sensor should not be construed.
Step S120, according to the change of described pressure value, obtains the primary election position of leakage point, from the plurality of sensor 10
Each two sensors 10 of the middle both sides of primary election position determining described leakage point.
Described in when controlling implement body can contrast that during pipe leakage, described pipeline pressure value along the line and pipeline do not leak
Pipeline pressure value along the line, obtains the primary election position of described leakage point, and pipeline pressure value along the line is obtained by above-mentioned sensor 10
?.Details refer to Fig. 3, compared with nominal situation when leakage performance curve and pipeline during pipe leakage does not leak, leakage point
The pressure drop of both sides is larger, and leakage point upstream pressure gradient steepening, and the barometric gradient in leakage point downstream slows down.Specifically in figure
In 3, leakage point is in the range of starting point 20 km to 30 kms.Starting point can be in the pressurizing point 20 of pipeline both sides
Individual.Leakage point upstream refers to the direction that the material of transport in pipeline comes, and leakage point downstream refers to the material of interior transport in pipe
The direction of flow direction.Meanwhile, the sensor 10 of leakage point both sides can be first it is detected that the negative pressure wave impulse that produces during pressure change
Signal, and signal is stronger.
Step S130, the pressure value that two sensors 10 of the side according to described primary election position send obtains first pressure
Gradient equations, the pressure value that two sensors 10 of the opposite side according to described primary election position send obtains second pressure gradient side
Journey.
Each two sensors 10 of the both sides of the primary election position according to leakage point obtain respectively first pressure gradient equations with
And second pressure gradient equations.Specifically, as shown in figure 3, it has been determined that the primary election position of leakage point is away from starting point 20 km extremely
In the range of 30 kms, then can choose the sensor 10 away from starting point 10 km and the sensor 10 away from starting point 20 km obtains
First pressure gradient equations, chooses the sensor 10 away from starting point 30 km and the sensor 10 away from starting point 40 km obtains second
Barometric gradient equation.
Step S140, according to described first pressure gradient equations and second pressure gradient equations, obtains described leakage point
Primary importance.
First pressure gradient equations and second pressure gradient equations can be all linear equation with one unknown, simultaneous first pressure
Gradient equations and second pressure gradient equations, can solve unique solution, and this solution is the primary importance of leakage point.
Pipeline can be divided into by passing by multiple sensors 10 by pipeline leakage detection method provided in an embodiment of the present invention
The segment that sensor 10 separates, the change of the pressure value then obtaining further according to sensor 10 determines the little of pipe leakage point place
Section, the pressure value that then sensor 10 according to this segment both sides obtains positions to pipe leakage point, with existing pipeline
Leakage detection method is compared, and pipeline leakage detection method provided in an embodiment of the present invention can drop while realizing being accurately positioned
Low laying cost, has stronger promotional value.
Details refer to Fig. 4, and Fig. 4 shows the pipe leakage inspection that a kind of specific embodiment of the embodiment of the present invention provides
Survey method, comprises the steps：
Step S110, the pipeline that the multiple sensors 10 of reception obtain respectively pressure value along the line.
Step S120, according to the change of described pressure value, obtains the primary election position of leakage point, from the plurality of sensor 10
Each two sensors 10 of the middle both sides of primary election position determining described leakage point.
Step S130, the pressure value that two sensors 10 of the side according to described primary election position send obtains first pressure
Gradient equations, the pressure value that two sensors 10 of the opposite side according to described primary election position send obtains second pressure gradient side
Journey.
Step S140, according to described first pressure gradient equations and second pressure gradient equations, obtains described leakage point
Primary importance.
Step S110 is same as described above to step S140, and here does not just repeat.
Step S150, receives the negative pressure wave signal that each sensor 10 of the both sides of described primary election position obtains respectively,
Described negative pressure wave signal includes the first sub- negative pressure wave signal and the second sub- negative pressure wave signal.
Obtain primary election position after, select primary election position both sides each sensor 10, primary election position both sides each
One sensor 10 obtains negative pressure wave signal respectively.Specifically, one of two side sensers 10 of primary election position obtain first
Sub- negative pressure wave signal, another obtains the second sub- negative pressure wave signal.
Step S160, carries out wavelet transformation respectively to the described first sub- negative pressure wave signal and the second sub- negative pressure wave signal.
Controller carries out wavelet transform process to the first sub- negative pressure wave signal and the second sub- negative pressure wave signal, obtains respectively
The second sub- negative pressure wave signal after after wavelet transformation first sub- negative pressure wave signal and wavelet transformation.
Step S170, to carrying out the first sub- negative pressure wave signal after wavelet transformation and the second sub- negative pressure wave signal leads to respectively
Cross sliding window algorithm and find suction wave flex point, it is negative that described suction wave flex point includes corresponding with the first sub- negative pressure wave signal first
Pressure ripple flex point and second suction wave flex point corresponding with the second sub- negative pressure wave signal.
If P1 (i) is the negative pressure wave signal sequence of the first sub- negative pressure wave signal after carrying out wavelet transformation, wherein, i is number
According to arbitrary data in sequence 1,2 ... L, L is the length of data sequence.Select length w of sliding window, then
If Y1 (i-W)-P1 (i) >=ξ, i are the first suction wave flex point.Wherein, i=0,1 ... L, ξ are the threshold of selection
Value.
If P2 (m) is the negative pressure wave signal sequence of the second sub- negative pressure wave signal after carrying out wavelet transformation, wherein, m is number
According to arbitrary data in sequence 1,2 ... L, L is the length of data sequence.Select length w of sliding window, then
If Y2 (m-W)-P2 (m) >=ξ, m are described second suction wave flex point.Wherein, m=0,1 ... L, ξ are selection
Threshold value.
Step S180, obtains the two of described primary election position according to described first suction wave flex point and the second suction wave flex point
Negative pressure wave signal time difference between each sensor 10 of side.
Controller obtains the time that one of sensor 10 of both sides of primary election position detects the first suction wave flex point
Value, and another in the sensor 10 of the both sides of primary election position detect the time value of the second suction wave flex point, by two
Time value does difference operation, obtains negative pressure wave signal time difference.
Step S190, according to described negative pressure wave signal time difference and suction wave velocity of wave function, obtains described leakage point
The second position.
If the sensor 10 of the both sides of primary election position obtains the time of the first suction wave flex point and the second suction wave flex point
It is respectively t1 and t2, wherein, the time that can obtain the first suction wave flex point near the sensor 10 of starting point is t1, away from starting point
Sensor 10 obtain the second negative pressure wave point time be t2, t1 and t2 theoretical expression be respectively：
Wherein, the spacing between the sensor 10 of the both sides of primary election position is n, and f (x) is suction wave velocity of wave function.
Then the expression formula of time difference is：
IfOriginal function be F (x), then can basisAnd F
X () obtainsTo equationSolve, obtain the value of x, institute
State in the both sides of primary election position, let out for described with the value sum of x near the corresponding numerical value in position of described sensor 10 of starting point
The second position of leak source.
Specifically, the value of x is in the sensor 10 of both sides of primary election position, and the sensor 10 of close starting point is away from leakage point
Distance, therefore also need to be added with the distance between starting point and the above-mentioned sensor 10 of close starting point, just can obtain leakage
The second position of point.Referring to Fig. 3, the value of x is sensor 10 at 20 kms in Fig. 3 distance away from leakage point to details.Therefore x and 20
Km is added, and just can obtain the second position of leakage point.
Step S200, takes the determination position as described leakage point for the meansigma methodss of described primary importance and the second position.
After obtaining primary importance and the second position, the meansigma methodss of primary importance and the second position can be taken as letting out
The determination position of leak source.
The specific embodiment of the embodiment of the present invention obtains the position of a leakage point, Yi Zhongshi respectively using two ways
By obtaining barometric gradient equation, and obtain the primary importance of leakage point by way of barometric gradient solving simultaneous equation, separately
One kind is by obtaining negative pressure wave signal, and then obtains leakage point according to the time difference of suction wave velocity of wave function and negative pressure wave signal
The second position.Then two positions are carried out with comprehensive descision, obtains the determination position of leakage point, further increase leakage inspection
The accuracy surveyed is additionally it is possible to realize to monitoring while accident release and slow leakage.
Details refer to Fig. 5, and Fig. 5 shows a kind of concrete mode obtaining suction wave velocity of wave function, specifically includes as follows
Step：
Step S181, receives the termination of pumping negative pressure wave signal producing due to termination of pumping that the plurality of sensor 10 obtains respectively,
And record the time of advent of each in the described termination of pumping negative pressure wave signal the plurality of sensor 10 of arrival.
When pipeline does not leak, pipeline is carried out with termination of pumping process, each in multiple sensors 10 obtains respectively due to stopping
The termination of pumping negative pressure wave signal that pump produces, and termination of pumping negative pressure wave signal is sent to controller.Controller is receiving sensor 10
During the termination of pumping negative pressure wave signal obtaining, record termination of pumping negative pressure wave signal reaches the time of advent of each in multiple sensors 10.
Termination of pumping needs to change pumped (conveying) medium each, after medium is stable, just carries out.
Step S182, when reaching the arrival of each in the plurality of sensor 10 according to described termination of pumping negative pressure wave signal
Between and the plurality of sensor 10 in often two neighboring sensor 10 between spacing, obtain the plurality of sensor 10
In often two neighboring sensor 10 place segment suction wave velocity of wave.
Reach the arrival of this two sensors 10 with the spacing between two neighboring sensor 10 and termination of pumping negative pressure wave signal
The time difference of time is compared, and just can obtain the suction wave velocity of wave of this two sensors 10 place segment.
Step S183, carries out numerical fitting to described suction wave velocity of wave, obtains suction wave velocity of wave function.
The fit approach of suction wave velocity of wave function is：With every interval that two neighboring sensor 10 is located in multiple sensors 10
The distance away from one of two pressurizing points 20 for the midpoint of section is abscissa, with often two neighboring sensor 10 place segment
Suction wave velocity of wave is vertical coordinate, carries out quadratic fit or exponential fitting, is derived from suction wave velocity of wave function f (x), details please be joined
See Fig. 6.
The embodiment of the present invention especially by suction wave velocity of wave function numerical fitting it is achieved that obtaining suction wave velocity of wave two
The function of the whole pipe section between pressurizing point 20, is conducive to improving the precision of leak point positioning.
Details refer to Fig. 7, and Fig. 7 shows a kind of pipeline leakage testing device provided in an embodiment of the present invention, described dress
Put 100 to include：
Pressure value receiver module 110, the pressure value along the line for receiving the pipeline that multiple sensors 10 obtain respectively.
Primary election position obtains module 120, for the change according to described pressure value, obtains the primary election position of leakage point, from
Each two sensors 10 of the both sides of primary election position of described leakage point are determined in the plurality of sensor 10.
Gradient equations obtains module 130, for the pressure of two sensors 10 transmissions of the side according to described primary election position
Force value obtains first pressure gradient equations, and the pressure value that two sensors 10 of the opposite side according to described primary election position send obtains
Obtain second pressure gradient equations.
Primary importance computing module 140, for according to described first pressure gradient equations and second pressure gradient equations,
Obtain the primary importance of described leakage point.
Pipeline leakage testing device 100 shown in Fig. 7 is corresponding with the method shown in Fig. 1, and here does not just repeat.
Details refer to Fig. 8, and described device 100, on the basis of including above-mentioned module, also includes：
Negative pressure wave signal receiver module 150, for receiving an each sensor 10 difference of the both sides of described primary election position
The negative pressure wave signal obtaining, described negative pressure wave signal includes the first sub- negative pressure wave signal and the second sub- negative pressure wave signal.
Wavelet transformation module 160, for entering respectively to the described first sub- negative pressure wave signal and the second sub- negative pressure wave signal
Row wavelet transformation.
Suction wave flex point obtains module 170, for carrying out the first sub- negative pressure wave signal and second after wavelet transformation
Sub- negative pressure wave signal finds suction wave flex point by sliding window algorithm respectively, and described suction wave flex point includes and the first sub- negative pressure
The corresponding first suction wave flex point of ripple signal and second suction wave flex point corresponding with the second sub- negative pressure wave signal.
Time difference obtains module 180, for obtaining institute according to described first suction wave flex point and the second suction wave flex point
Negative pressure wave signal time difference between each sensor 10 of the both sides stating primary election position.
The second position obtains module 190, for according to described negative pressure wave signal time difference and suction wave velocity of wave function, obtaining
Obtain the second position of described leakage point.
Determine that position obtains module 200, for taking the meansigma methodss of described primary importance and the second position as described leakage
The determination position of point.
Device 100 shown in Fig. 8 is corresponding with the method shown in Fig. 4, and here does not just repeat.
Details refer to Fig. 9, and pipeline leakage testing device 100 provided in an embodiment of the present invention removes and includes above-mentioned module
Outward, also include：
Termination of pumping information acquisition module, for receiving the termination of pumping producing due to termination of pumping that the plurality of sensor 10 obtains respectively
Negative pressure wave signal, and record the time of advent of each in the described termination of pumping negative pressure wave signal the plurality of sensor 10 of arrival.
Suction wave velocity of wave obtains module, for being reached in the plurality of sensor 10 according to described termination of pumping negative pressure wave signal
The spacing between often two neighboring sensor 10 in the time of advent of each and the plurality of sensor 10, obtains described
The suction wave velocity of wave of the often two neighboring sensor 10 place segment in multiple sensors 10.
Velocity of wave function obtains module, for described suction wave velocity of wave is carried out with numerical fitting, obtains suction wave velocity of wave function.
Wherein, suction wave flex point obtains module and includes：
First flex point submodule, for according to formulaObtain Y1
I (), if Y1 (i-W)-P1 (i) >=ξ, i is described first suction wave flex point, and P1 (i) is the first son after carrying out wavelet transformation
The negative pressure wave signal sequence of negative pressure wave signal.
Second Inflexion Point submodule, according to formulaObtain Y2 (m),
If Y2 (m-W)-P2 (m) >=ξ, m are described second suction wave flex point；Wherein, P2 (m) is the second son after carrying out wavelet transformation
The negative pressure wave signal sequence of negative pressure wave signal.
Module shown in Fig. 9 is corresponding with the method shown in Fig. 5, and here does not just repeat.
Pipeline leakage detection method provided in an embodiment of the present invention and device include：Receive multiple sensors 10 to obtain respectively
Pipeline pressure value along the line.Change according to pressure value, it is possible to obtain the primary election position of leakage point, and from multiple sensors 10
Middle each two sensors 10 determining primary election position both sides.Obtain according to each two sensors 10 of primary election position both sides respectively
One barometric gradient equation and second pressure gradient equations.Further according to first pressure gradient equations and second pressure gradient equations
Obtain the primary importance of leakage point.Pipeline leakage detection method provided in an embodiment of the present invention passes through multiple sensors 10 can be by
Pipeline is divided into the segment being separated by sensor 10, and the change of the pressure value then obtaining further according to sensor 10 determines pipe leakage
The segment that point is located, the pressure value that then sensor 10 according to this segment both sides obtains positions to pipe leakage point, with
Existing pipeline leakage detection method is compared, and pipeline leakage detection method provided in an embodiment of the present invention can realized accurately determining
Reduce laying cost while position, have stronger promotional value.
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, above in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention has been carried out clearly and completely description it is clear that described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments.The present invention generally described and illustrated in accompanying drawing herein is implemented
The assembly of example can be arranged with various different configurations and design.
Therefore, the above detailed description to the embodiments of the invention providing in the accompanying drawings be not intended to limit claimed
The scope of the present invention, but be merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of not making creative work, broadly falls into the model of present invention protection
Enclose.
It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then do not need it to be defined further and explains in subsequent accompanying drawing.
In describing the invention, it should be noted that term " on ", D score, " interior ", the orientation of instruction or the position such as " outward "
The relation of putting is based on orientation shown in the drawings or position relationship, or the orientation usually put or position when this invention product uses
Put relation, be for only for ease of and describe the present invention and simplify description, rather than indicate or imply that the device of indication or element are necessary
There is specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
In describing the invention in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or one
Body ground connects；Can be to be mechanically connected or electrically connect；Can be joined directly together it is also possible to by intermediary indirect
It is connected, can be the connection of two element internals.For the ordinary skill in the art, can be with concrete condition understanding
State term concrete meaning in the present invention.
Claims (10)
1. a kind of pipeline leakage detection method is it is characterised in that methods described includes：
Receive the pipeline that multiple sensors obtain respectively pressure value along the line；
According to the change of described pressure value, obtain the primary election position of leakage point, determine described leakage from the plurality of sensor
Each two sensors of the both sides of primary election position of point；
The pressure value that two sensors of the side according to described primary election position send obtains first pressure gradient equations, according to institute
State the pressure value acquisition second pressure gradient equations that two sensors of the opposite side of primary election position send；
According to described first pressure gradient equations and second pressure gradient equations, obtain the primary importance of described leakage point.
2. method according to claim 1 is it is characterised in that methods described also includes：
Receive the negative pressure wave signal that each sensor of the both sides of described primary election position obtains respectively, described negative pressure wave signal bag
Include the first sub- negative pressure wave signal and the second sub- negative pressure wave signal；
Wavelet transformation is carried out respectively to the described first sub- negative pressure wave signal and the second sub- negative pressure wave signal；
To carrying out the first sub- negative pressure wave signal after wavelet transformation and the second sub- negative pressure wave signal is done a sum orally by sliding window respectively
Method finds suction wave flex point, described suction wave flex point include first suction wave flex point corresponding with the first sub- negative pressure wave signal and
Second suction wave flex point corresponding with the second sub- negative pressure wave signal；
Obtain each biography of the both sides of described primary election position according to described first suction wave flex point and the second suction wave flex point
Negative pressure wave signal time difference between sensor；
According to described negative pressure wave signal time difference and suction wave velocity of wave function, obtain the second position of described leakage point；
Take the determination position as described leakage point for the meansigma methodss of described primary importance and the second position.
3. method according to claim 2 it is characterised in that described according to described negative pressure wave signal time difference and negative pressure
Ripple velocity of wave function, before obtaining the second position of described leakage point, methods described also includes：
Receive the termination of pumping negative pressure wave signal producing due to termination of pumping that the plurality of sensor obtains respectively, and record described termination of pumping and bear
Pressure ripple signal reaches the time of advent of each in the plurality of sensor；
Reach the time of advent of each and the plurality of biography in the plurality of sensor according to described termination of pumping negative pressure wave signal
The spacing between often two neighboring sensor in sensor, the often two neighboring sensor obtaining in the plurality of sensor is located
The suction wave velocity of wave of segment；
Described suction wave velocity of wave is carried out with numerical fitting, obtains suction wave velocity of wave function.
4. method according to claim 2 it is characterised in that described to carrying out the first sub- suction wave letter after wavelet transformation
Number and the second sub- negative pressure wave signal respectively by sliding window algorithm find suction wave flex point, including：
According to formulaObtain Y1 (i), if Y1 (i-W)-P1 (i) >=ξ,
Then i is described first suction wave flex point, and P1 (i) is the negative pressure wave signal sequence of the first sub- negative pressure wave signal after carrying out wavelet transformation
Row；
According to formulaObtain Y2 (m), if Y2 (m-W)-P2 (m) >=ξ,
Then m is described second suction wave flex point；Wherein, P2 (m) is the suction wave of the second sub- negative pressure wave signal after carrying out wavelet transformation
Signal sequence, L is the length of negative pressure wave signal sequence, and w is the length of sliding window, and ξ is predetermined threshold value.
5. method according to claim 2 it is characterised in that described according to described negative pressure wave signal time difference and negative pressure
Ripple velocity of wave function, obtains the second position of described leakage point, including：
According to formulaAndOriginal function F (x), obtain
To equationSolve, obtain the value of x, in the both sides of described primary election position, near starting point
The corresponding numerical value in position of described sensor and the value sum of x be described leakage point the second position, wherein f (x) is described
Suction wave velocity of wave function, the spacing between each sensor of the both sides of described primary election position is n.
6. method according to claim 1, it is characterised in that the described change according to described pressure value, obtains leakage point
Primary election position, including：
During contrast pipe leakage, described pipeline pressure value along the line and pipeline described pipeline pressure value along the line when not leaking, obtain
Obtain the primary election position of described leakage point.
7. a kind of pipeline leakage testing device, is applied to controller it is characterised in that described device includes：
Pressure value receiver module, the pressure value along the line for receiving the pipeline that multiple sensors obtain respectively；
Primary election position obtains module, for the change according to described pressure value, obtains the primary election position of leakage point, from the plurality of
Each two sensors of the both sides of primary election position of described leakage point are determined in sensor；
Gradient equations obtains module, and the pressure value that sends of two sensors for the side according to described primary election position obtains the
One barometric gradient equation, the pressure value that two sensors of the opposite side according to described primary election position send obtains second pressure ladder
Degree equation；
Primary importance computing module, for according to described first pressure gradient equations and second pressure gradient equations, obtaining institute
State the primary importance of leakage point.
8. device according to claim 7 is it is characterised in that described device also includes：
Negative pressure wave signal receiver module, the negative pressure that each sensor for receiving the both sides of described primary election position obtains respectively
Ripple signal, described negative pressure wave signal includes the first sub- negative pressure wave signal and the second sub- negative pressure wave signal；
Wavelet transformation module, for carrying out small echo change respectively to the described first sub- negative pressure wave signal and the second sub- negative pressure wave signal
Change；
Suction wave flex point obtains module, for carrying out the first sub- negative pressure wave signal after wavelet transformation and the second sub- suction wave
Signal finds suction wave flex point by sliding window algorithm respectively, and described suction wave flex point includes and the first sub- negative pressure wave signal pair
The first suction wave flex point of answering and second suction wave flex point corresponding with the second sub- negative pressure wave signal；
Time difference obtains module, for obtaining described just bit selecting according to described first suction wave flex point and the second suction wave flex point
Negative pressure wave signal time difference between each sensor of the both sides put；
The second position obtains module, described for according to described negative pressure wave signal time difference and suction wave velocity of wave function, obtaining
The second position of leakage point；
Determine that position obtains module, for taking the determination as described leakage point for the meansigma methodss of described primary importance and the second position
Position.
9. device according to claim 8 is it is characterised in that described device also includes：
Termination of pumping information acquisition module, for receiving the termination of pumping suction wave producing due to termination of pumping that the plurality of sensor obtains respectively
Signal, and record the time of advent of each in the described termination of pumping negative pressure wave signal the plurality of sensor of arrival；
Suction wave velocity of wave obtains module, for according to each in the described termination of pumping negative pressure wave signal the plurality of sensor of arrival
The spacing between often two neighboring sensor in the time of advent and the plurality of sensor, obtains the plurality of sensor
In often two neighboring sensor place segment suction wave velocity of wave；
Velocity of wave function obtains module, for described suction wave velocity of wave is carried out with numerical fitting, obtains suction wave velocity of wave function.
10. device according to claim 8 is it is characterised in that described suction wave flex point acquisition module includes：
First flex point submodule, for according to formulaObtain Y1 (i),
If Y1 (i-W)-P1 (i) >=ξ, i are described first suction wave flex point, P1 (i) is the first sub- negative pressure after carrying out wavelet transformation
The negative pressure wave signal sequence of ripple signal；
Second Inflexion Point submodule, according to formulaObtain Y2 (m), if Y2
(m-W)-P2 (m) >=ξ, then m is described second suction wave flex point；Wherein, P2 (m) is the second sub- negative pressure after carrying out wavelet transformation
The negative pressure wave signal sequence of ripple signal.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678553A (en) * | 2017-03-17 | 2017-05-17 | 中国石油大学(华东) | Calculating method of propagation speed of leakage dynamic pressure waves in in-pipe gas |
| CN107084313A (en) * | 2017-05-16 | 2017-08-22 | 云南大红山管道有限公司 | Ore slurry pipeline leaks positioning alarm system and method |
| CN107218517A (en) * | 2017-07-19 | 2017-09-29 | 河南永立电力杆塔有限公司 | Urban Underground piping lane water supply line leak detection system and method |
| CN107620868A (en) * | 2017-11-08 | 2018-01-23 | 山东省科学院激光研究所 | Pipeline leakage detection method and device |
| CN108302329A (en) * | 2018-01-25 | 2018-07-20 | 福建双环能源科技股份有限公司 | A kind of dew point data exception detection method |
| CN108758357A (en) * | 2018-06-01 | 2018-11-06 | 浙江大学 | A kind of localization of bursted pipe method based on the analysis of water supply network change value of pressure |
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| CN109723976A (en) * | 2019-02-26 | 2019-05-07 | 中国神华能源股份有限公司 | Line clogging position detecting device |
| CN110159937A (en) * | 2019-07-02 | 2019-08-23 | 北京中计新业科技发展有限公司 | A kind of pipeline leakage detection method of naval vessel pipe network |
| CN111365623A (en) * | 2020-03-09 | 2020-07-03 | 大连理工大学 | Negative pressure wave inflection point identification method based on linear fitting |
| CN112378924A (en) * | 2020-09-24 | 2021-02-19 | 宁波市鄞州世纪耀达市政建设有限公司 | Pipeline crack positioning method and system, storage medium and intelligent terminal |
| CN113639208A (en) * | 2021-07-16 | 2021-11-12 | 汕头大学 | Negative pressure wave signal inflection point positioning method and system based on extreme approximation |
| CN114087542A (en) * | 2021-11-23 | 2022-02-25 | 国家石油天然气管网集团有限公司华南分公司 | Pipeline leakage detection method, device and medium based on SCADA system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3214130A1 (en) * | 1982-04-16 | 1983-10-20 | Hekitron, 8156 Otterfing | Underground mains system |
| CN1527028A (en) * | 2003-06-18 | 2004-09-08 | 中国石油天然气集团公司 | Sensing and testing fiber grating system for oil and gas pipeline detection |
| CN1693865A (en) * | 2005-06-01 | 2005-11-09 | 天津大学 | Method for detecting leakage of oil gas pipe based on pressure signal knee |
| CN101016975A (en) * | 2007-02-09 | 2007-08-15 | 郑州大学 | On-line testing method for gas oil pipe leakage based on orienting suction wave identification technology |
| CN101761780A (en) * | 2010-01-11 | 2010-06-30 | 中国石油大学(华东) | Gas pipeline leakage detecting and positioning device and method thereof |
| CN105509979A (en) * | 2016-01-11 | 2016-04-20 | 山东省科学院激光研究所 | Fiber optic negative pressure wave-based oil and gas pipeline leakage monitoring positioning system and method |
-
2016
- 2016-12-01 CN CN201611094634.3A patent/CN106481989B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3214130A1 (en) * | 1982-04-16 | 1983-10-20 | Hekitron, 8156 Otterfing | Underground mains system |
| CN1527028A (en) * | 2003-06-18 | 2004-09-08 | 中国石油天然气集团公司 | Sensing and testing fiber grating system for oil and gas pipeline detection |
| CN1693865A (en) * | 2005-06-01 | 2005-11-09 | 天津大学 | Method for detecting leakage of oil gas pipe based on pressure signal knee |
| CN101016975A (en) * | 2007-02-09 | 2007-08-15 | 郑州大学 | On-line testing method for gas oil pipe leakage based on orienting suction wave identification technology |
| CN101761780A (en) * | 2010-01-11 | 2010-06-30 | 中国石油大学(华东) | Gas pipeline leakage detecting and positioning device and method thereof |
| CN105509979A (en) * | 2016-01-11 | 2016-04-20 | 山东省科学院激光研究所 | Fiber optic negative pressure wave-based oil and gas pipeline leakage monitoring positioning system and method |
Non-Patent Citations (1)
| Title |
|---|
| 曹燕龙等: "压力梯度法定位管道泄漏点的数值模拟", 《辽宁石油化工大学学报》 * |
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