CN106122774B - A kind of pipeline leakage detection method - Google Patents
A kind of pipeline leakage detection method Download PDFInfo
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- CN106122774B CN106122774B CN201610644395.8A CN201610644395A CN106122774B CN 106122774 B CN106122774 B CN 106122774B CN 201610644395 A CN201610644395 A CN 201610644395A CN 106122774 B CN106122774 B CN 106122774B
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- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 claims description 6
- 230000002441 reversible effect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 27
- 239000010959 steel Substances 0.000 description 27
- 238000012544 monitoring process Methods 0.000 description 13
- 238000009413 insulation Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 235000009566 rice Nutrition 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
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention provides a kind of pipeline leakage detection method, the leakage point in pipe insulating layer in detection line is detected to the first voltage and second voltage of pipe ends by obtaining, so that it is determined that it is detected the calibration length of pipeline, the leakage point in detected pipe insulating layer in detection line is obtained again to the tertiary voltage of pipeline one end, is determined to be detected the position of pipe leakage point according to the calibration length of the tertiary voltage and the detected pipeline.The pipeline leakage detection method is calibrated according to the magnitude of voltage measured in real time to duct length, improves positioning precision, can be accurately positioned pipe leakage point, effectively monitors pipe leakage situation.
Description
Technical field
The present invention relates to electronic technology field, and in particular to a kind of pipeline leakage detection method.
Background technology
With the propulsion of urbanization process, city is increasing to the demand of central heating, the laying of Direct-Buried Heating Pipeline
Network is also gradually expanding.With the long-play of heat supply pipeline, due to pipeline aging, geology variation, the original such as bad of constructing
Cause, easily cause the leakage of directly buried pipeline.Therefore, real-time monitoring tubular road leakage situation and be accurately positioned pipe leakage point to close weight
Will.
For the monitoring and positioning of directly buried pipeline leakage, because the change of pipeline real time temperature, humidity causes pipe leakage
The real-time change of monitoring system voltage resistance, the monitoring system used at present are difficult to be adjusted according to these changes, so as to difficult
To be accurately positioned to pipe leakage point.Meanwhile premature leak is more hidden is difficult to find in time, once leakage occurs, will lead
The heat supply leakage of large area is caused, the degree of accuracy of positioning leakage point is relatively low in the range of the leakage of large area.
The content of the invention
The technical problem to be solved in the present invention is to overcome relatively low to the positional accuracy of pipe leakage point in the prior art
The defects of.
The present invention provides a kind of pipeline leakage detection method, including：
Obtain and be detected the leakage point in pipe insulating layer in detection line to the first voltage and second voltage of pipe ends；
According to the first voltage and the second voltage, the physical length of the detected pipeline is calibrated, really
The calibration length of the detected pipeline after fixed calibration；
Obtain and be detected the leakage point in pipe insulating layer in detection line to the tertiary voltage of pipeline one end；
The detected pipe leakage point is determined according to the calibration length of the tertiary voltage and the detected pipeline
Position.
Preferably, described obtain is detected the leakage point in pipe insulating layer in detection line to the first voltage of pipe ends
Include with second voltage：
Add positive first reference voltage being detected in pipe insulating layer in detection line, obtain and be detected in pipe insulating layer
Leakage point in detection line to pipeline one end first voltage；
Add reverse first reference voltage in detection line being detected in pipe insulating layer, obtain and be detected in pipe insulating layer
Leakage point in detection line to the pipeline other end second voltage.
Preferably, the calibration length of the detected pipeline is calculated by formula (1)：
Wherein, L1 is the calibration length of the detected pipeline, and L is the physical length of the detected pipeline, and U is described
First reference voltage, U2 and U3 are respectively the first voltage and the second voltage.
Preferably, described obtain is detected the leakage point in pipe insulating layer in detection line to the tertiary voltage of pipeline one end
Including：
Add the second reference voltage in detection line being detected in pipe insulating layer, obtain to be detected in pipe insulating layer and detect
Leakage point on line to pipeline one end tertiary voltage.
Preferably, the position of the detected pipe leakage point is calculated by formula (2)：
Wherein, L2 is distance of the leakage point in the detected pipe insulating layer in detection line to pipeline one end, and L1 is
The calibration length of the detected pipeline, U0 are second reference voltage, and U4 is the tertiary voltage.
Technical solution of the present invention, have the following advantages that：
Pipeline leakage detection method provided by the invention, by obtaining the leakage in detected pipe insulating layer in detection line
Point so that it is determined that being detected the calibration length of pipeline, then obtains tested test tube to the first voltage and second voltage of pipe ends
Leakage point in road heat-insulation layer in detection line to pipeline one end tertiary voltage, according to the tertiary voltage and the tested test tube
The calibration length in road determines to be detected the position of pipe leakage point.The pipeline leakage detection method is according to the magnitude of voltage measured in real time
Duct length is calibrated, improves positioning precision, pipe leakage point can be accurately positioned, effectively monitors pipe leakage feelings
Condition.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of pepe monitoring system；
Fig. 2 is a kind of circuit theory diagrams of pepe monitoring system leakage monitoring；
Fig. 3 is a kind of flow chart of pipeline leakage detection method；
Fig. 4 is the circuit theory diagrams that a kind of pepe monitoring system is calibrated automatically；
Fig. 5 is the circuit theory diagrams that a kind of pepe monitoring system is calibrated automatically；
Fig. 6 is a kind of circuit theory diagrams of pepe monitoring system leakage positioning.
Wherein, 1- senses line, 2- feedback lines, 3- pipeline steel pipes, 4- conduit enclosures, 5- pipe insulating layers, 6- monitors, 7-
Constant pressure source.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is the connection of two element internals, can is wireless connection or wired connection.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It is be combined with each other into conflict can.
Embodiment 1
The present embodiment provides a kind of pepe monitoring system, as shown in Figure 1.Monitored pipeline is metallic conduit, in pipe line steel
The outer layer of pipe 3 has pipe insulating layer 5 and conduit enclosure 4.It is monitored pipe section between the ends A and B of pipeline steel pipe 3.Pipe
Road heat-insulation layer 5 uses insulating materials, can use foam.In the heat-insulation layer 5 of monitored pipeline, along the pre-buried inspection in the axial direction of pipeline
Survey line, the detection line include sensing line 1 and feedback line 2, sense one end of line 1 and feedback line 2 outside the B ends of pipeline steel pipe 3
Connection.
The pepe monitoring system includes sensing line 1, feedback line 2 and monitor 6.Sensing line 1 is enclosed with insulating barrier, described exhausted
The through hole for making sensing line 1 exposed is distributed with edge layer on along its length, when monitored pipe leakage liquid, in heat-insulation layer 5
Leakage liquid passes through the through hole sensing contact line 1.The hole that line insulating layer uses regular distribution is sensed, with exposed wire phase
Than the accuracy of leak point positioning when effectively increasing a wide range of leakage.Monitor 6 respectively with sensing line 1 and feedback line 2 it is another
One end is connected outside the A ends of pipeline steel pipe 3, and monitor 6 is also connected with the A ends of pipeline steel pipe 3.
When the optional position leakage liquid of monitored pipeline, the leakage liquid in pipe insulating layer 5 make pipeline steel pipe 3,
Sensing line 1 is connected to form loop with monitor 6.Monitor 6 is used for true according to the magnitude of voltage between sensing line 1 and pipeline steel pipe 3
Surely monitored pipeline whether leakage liquid.
The system can not only find the leakage of heat supply pipeline in time, and can be advised by sensing to be distributed on line insulating layer
Hole then is accurately positioned pipe leakage point, improves positioning precision, effectively monitors pipe leakage situation.
As a preferred embodiment, it is provided with and is used for pipeline steel pipe 3, sensing line 1 and feedback in monitor 6
Line 2 provides the power supply of voltage, and the power supply uses constant pressure source 7, as shown in Figure 2.From constant pressure source, there is the electricity better than constant-current source
Press stability.
Specifically, reference voltage U, reference voltage U quilts are applied between one end of sensing line 1 and the A ends of pipeline steel pipe 3
Interior the resistance R1 and pipe insulating layer 5 of monitor 6 resistance RF segmentations.If pipeline does not leak, heat-insulation layer 5 is in drying
State, then resistance RF is very high so that the voltage U1 on interior resistance R1 is very low.If pipeline leaks at C points, leakage fluid
Body enters pipe insulating layer 5 by C points, and making sensing line 1, short circuit, resistance RF at pipe leakage point C can be reduced with pipeline steel pipe 3,
The voltage U1 on interior resistance R1 is caused to increase.When voltage U1 exceedes predetermined value, system determines monitored pipe leakage liquid.
As a specific embodiment, sensing line 1 uses nichrome wire, and feedback line 2 is to be enclosed with insulating barrier
Copper cash.It is the different wire of two root architectures to sense line 1 and feedback line 2, all is used to measure with certain resistance value, sensing line 1
Voltage, feedback line 2 are used for transmission signal.
Embodiment 2
The present embodiment provides a kind of pipeline leakage detection method, and the flow chart of this method is as shown in figure 3, specifically include following
Step：
S1：It is electric to the first voltage of pipe ends and second to obtain the leakage point being detected in pipe insulating layer in detection line
Pressure.As a concrete implementation mode, line is sensed as shown in figure 4, obtaining be detected detection line in pipe insulating layer 5 first
Leakage point C on 1 to pipeline steel pipe A ends first voltage U2；Detected as shown in figure 5, obtaining again in detected pipe insulating layer 5
Line is to sense the leakage point C on line 1 to the second voltage U3 of pipe line steel pipe B end.
S2：According to the first voltage and the second voltage, the physical length of the detected pipeline is calibrated,
It is determined that the calibration length of the detected pipeline after calibration.Specifically, first voltage U2 is the voltage for sensing L2 parts on line,
Correspond to from leakage point C to the distance at pipeline steel pipe A ends；Second voltage U3 is the voltage for sensing (L-L2) part on line, it is corresponding from
Leakage point C to pipe line steel pipe B end distance, therefore can according to first voltage U2 and second voltage U3 to be detected pipeline reality
Length L is that the distance at pipeline steel pipe A ends to B ends is calibrated, so that it is determined that the calibration length of the detected pipeline after calibration.
Because directly buried pipeline can become in underground, the real time temperature and humidity of pipeline local environment with surrounding environment
Change, so as to cause the real-time voltage of line leakage and resistance to change therewith, to the accuracy of pipeline leakage testing and positioning
Impact.Therefore, in locating leaks in pipes point, the standard of leak point positioning will be influenceed using the physical length of detected pipeline
True property.The physical length for being detected pipeline is calibrated according to real-time voltage, uses the detected duct length meter after calibration
Calculate the position of pipe leakage point, it is possible to increase the accuracy of pipe leakage positioning.
S3：Obtain and be detected the leakage point in pipe insulating layer in detection line to the tertiary voltage of pipeline one end.As one
Individual concrete implementation mode, leakage point C of the detection line i.e. on sensing line 1 in pipe insulating layer 5 is detected as shown in fig. 6, obtaining
To the tertiary voltage U4 at pipeline steel pipe A ends.
S4：The detected pipe leakage point is determined according to the calibration length of the tertiary voltage and the detected pipeline
Position.Specifically, tertiary voltage U4 is corresponding from leakage point C to the distance at pipeline steel pipe A ends.Therefore, according to tertiary voltage U4
With the calibration length of the detected pipeline, the position of the detected pipe leakage point is can determine, i.e., from leakage point C to pipe
The distance at road steel pipe A ends.
The pipeline leakage detection method is by obtaining the leakage point in detected pipe insulating layer in detection line to pipeline two
The first voltage and second voltage at end, so that it is determined that being detected the calibration length of pipeline, then obtain in detected pipe insulating layer
Leakage point in detection line is grown to the tertiary voltage of pipeline one end according to the calibration of the tertiary voltage and the detected pipeline
Degree determines to be detected the position of pipe leakage point.The pipeline leakage detection method is according to the magnitude of voltage measured in real time to duct length
Calibrated, improve positioning precision, pipe leakage point can be accurately positioned, effectively monitor pipe leakage situation.
As a preferred embodiment, first voltage or second voltage are additionally operable to determine leakage of detected pipeline etc.
Level.Specifically, as shown in Fig. 2 the leakage class of pipeline can be detected according to first voltage.First, in one end of sensing line 1
Apply reference voltage U between the A ends of pipeline steel pipe 3, reference voltage U is monitored interior the resistance R1 and pipe insulating layer 5 of device 6
Resistance RF segmentation.If pipeline does not leak, heat-insulation layer 5 is in drying regime, then resistance RF is very high so that interior resistance
Voltage U1 on R1 is very low.If pipeline leaks at C points, leakage liquid enters pipe insulating layer 5 by C points, makes sensing
Short circuit, resistance RF at pipe leakage point C can be reduced line 1 with pipeline steel pipe 3, cause the voltage U1 on interior resistance R1 to increase.When
When voltage U1 exceedes predetermined value, it is determined that monitored pipe leakage liquid.
Further, by the resistance of resistance R1 in change, according to the voltage U1 on interior resistance R1, it is possible to according to formula
(3) the resistance RF of pipe insulating layer 5 is calculated.
Wherein, U is the reference voltage of input, and R1 is the interior resistance of monitored device 6, and U1 is the voltage on interior resistance R1, RF
For the resistance of pipe insulating layer 5.
According to the resistance RF of pipe insulating layer 5, different resistance value scopes is set, so as to corresponding different leakage class.
Specifically, grade can be will leak out and is divided into 15 grades, represented respectively with L0 to L14.Leak grade more and more higher is represented from L14 to L1,
Wherein L0 represents no pipe leakage.When monitoring that pipeline occurs to leak and the leakage class is higher than L10, monitor is carried out
The detection of leakage point position.
Before locating leaks in pipes point, first the length of pipeline is calibrated, to ensure the standard of pipe leakage point location
True property.Specifically, the physical length L for being detected pipeline is calibrated, it is necessary to obtain detection line in detected pipe insulating layer
On leakage point to pipe ends first voltage and second voltage.Therefore, above-mentioned steps S1 also includes following sub-step：
S11：Add positive first reference voltage being detected in pipe insulating layer in detection line, obtain and be detected pipe insulation
Leakage point in layer in detection line to pipeline one end first voltage.As shown in figure 4, in the termination of sensing line 1 and feedback line 2
Termination applies the first reference voltage U of forward direction, now reference voltage U positive connection sensing line 1.Measured using digital-to-analogue conversion device
Go out to sense the first voltage U2 between line 1 and pipeline steel pipe 3, first voltage U2 is the voltage for sensing L2 parts on line, it is corresponding from
Leakage point C to pipeline steel pipe A ends distance.
S12：Add reverse first reference voltage in detection line being detected in pipe insulating layer, obtain and be detected pipe insulation
Leakage point in layer in detection line to the pipeline other end second voltage.As shown in figure 5, in the termination of sensing line 1 and feedback line 2
Termination apply reverse first reference voltage U, now reference voltage U positive connection feedback line 2.Surveyed using digital-to-analogue conversion device
The second voltage U3 between sensing line 1 and pipeline steel pipe 3 is measured, second voltage U3 is the voltage for sensing (L-L2) part on line,
Correspond to from leakage point C to the distance of pipe line steel pipe B end.
According to first voltage U2 and second voltage U3, the physical length L for being detected pipeline is calibrated.Calibrate length L1
It is calculated by formula (1)：
Wherein, L1 is the calibration length for being detected pipeline, and L is the physical length for being detected pipeline, and U is the first benchmark electricity
Pressure, U2 and U3 are respectively first voltage and second voltage.
Magnitude of voltage under duct length the calibration real time temperature and humidity with reference to residing for pipeline of the pipeline leakage detection method,
The calibration length of pipeline is obtained by calculating, pipeline physical length is replaced with the calibration length of pipeline, improves leakage positioning
The degree of accuracy.
, it is necessary to calibrate length according to pipeline after the completion of duct length calibration, pipe leakage position is determined.Therefore, above-mentioned step
Rapid S3 also includes following sub-step：
S31：Add the second reference voltage in detection line being detected in pipe insulating layer, obtain and be detected in pipe insulating layer
Leakage point in detection line to pipeline one end tertiary voltage.Specifically, as shown in fig. 6, in the termination of sensing line 1 and feedback line
2 termination applies the second reference voltage U0.The leakage point C and pipeline steel pipe 3 on sensing line 1 are measured using digital-to-analogue conversion device
A ends between tertiary voltage U4, tertiary voltage U4 is the voltage for sensing L2 parts on line, corresponding from leakage point C to pipe line steel
The distance at pipe A ends.
The position of the detected pipe leakage point is determined according to the calibration length of tertiary voltage and the detected pipeline,
Determine the leakage point in the detected pipe insulating layer in detection line to the distance of pipeline one end.It is former using the partial pressure of resistance
Manage to determine pipe leakage point C position.Determine that pipe leakage point C position is calculated by formula (2), it is known that pipe leakage
Point C should be in the position from sensing end L2 rice.
Wherein, L2 be detected pipe insulating layer in detection line be sense line 1 on leakage point C to pipeline one end A away from
From L1 is the calibration length for being detected pipeline, and U0 is the second reference voltage, and U4 is tertiary voltage.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (5)
- A kind of 1. pipeline leakage detection method, it is characterised in that including：Obtain and be detected the leakage point in pipe insulating layer in detection line to the first voltage and second voltage of pipe ends；According to the first voltage and the second voltage, the physical length of the detected pipeline is calibrated, determines school The calibration length of the detected pipeline after standard；Obtain and be detected the leakage point in pipe insulating layer in detection line to the tertiary voltage of pipeline one end；The position of the detected pipe leakage point is determined according to the calibration length of the tertiary voltage and the detected pipeline.
- 2. according to the method for claim 1, it is characterised in that described obtain is detected in pipe insulating layer in detection line Leakage point to the first voltage and second voltage of pipe ends includes：Add positive first reference voltage being detected in pipe insulating layer in detection line, obtain and be detected detection in pipe insulating layer Leakage point on line to pipeline one end first voltage；Add reverse first reference voltage in detection line being detected in pipe insulating layer, obtain to be detected in pipe insulating layer and detect Leakage point on line to the pipeline other end second voltage.
- 3. according to the method for claim 2, it is characterised in that the calibration length of the detected pipeline is counted by formula (1) Obtain：<mrow> <mi>L</mi> <mn>1</mn> <mo>=</mo> <mfrac> <mrow> <mi>L</mi> <mrow> <mo>(</mo> <mi>U</mi> <mn>2</mn> <mo>+</mo> <mi>U</mi> <mn>3</mn> <mo>)</mo> </mrow> </mrow> <mi>U</mi> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>Wherein, L1 is the calibration length of the detected pipeline, and L is the physical length of the detected pipeline, and U is described first Reference voltage, U2 and U3 are respectively the first voltage and the second voltage.
- 4. according to the method for claim 1, it is characterised in that described obtain is detected in pipe insulating layer in detection line Leakage point to the tertiary voltage of pipeline one end includes：Add positive second reference voltage being detected in pipe insulating layer in detection line, obtain and be detected detection in pipe insulating layer Leakage point on line to pipeline one end tertiary voltage.
- 5. according to the method for claim 4, it is characterised in that the position of the detected pipe leakage point passes through formula (2) It is calculated：<mrow> <mi>L</mi> <mn>2</mn> <mo>=</mo> <mfrac> <mrow> <mi>L</mi> <mn>1</mn> <mo>&times;</mo> <mi>U</mi> <mn>4</mn> </mrow> <mrow> <mi>U</mi> <mn>0</mn> </mrow> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>2</mn> <mo>)</mo> </mrow> </mrow>Wherein, L2 be leakage point in the detected pipe insulating layer in detection line to the distance of pipeline one end, L1 is described The calibration length of pipeline is detected, U0 is positive second reference voltage, and U4 is the tertiary voltage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610644395.8A CN106122774B (en) | 2016-08-05 | 2016-08-05 | A kind of pipeline leakage detection method |
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|---|---|---|---|
| CN201610644395.8A CN106122774B (en) | 2016-08-05 | 2016-08-05 | A kind of pipeline leakage detection method |
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| CN106122774A CN106122774A (en) | 2016-11-16 |
| CN106122774B true CN106122774B (en) | 2018-03-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108980634A (en) * | 2017-06-01 | 2018-12-11 | 河北国盛管道装备制造有限公司 | Leakage detecting system for water conveyance pipeline |
| CN107143753B (en) * | 2017-07-19 | 2022-12-27 | 中国瑞林工程技术股份有限公司东莞分公司 | Drainage pipe network capable of detecting water leakage and detection method |
| CN113915452B (en) * | 2021-10-22 | 2023-03-24 | 中国化学工程第十三建设有限公司 | Two-multiplication pipe cleaner searching method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3721205A1 (en) * | 1987-06-26 | 1989-01-05 | Pfaudler Werke Ag | METHOD FOR DETERMINING DAMAGE TO A CORROSION PROTECTIVE LAYER AND MEASURING DEVICE FOR CARRYING OUT THIS METHOD |
| ATE102347T1 (en) * | 1989-09-05 | 1994-03-15 | Brandes Bernd | METHOD AND DEVICE FOR LOCATING THE TRUE LOCATION OF A LEAK IN A PIPE CONTAINING A WET MEDIUM. |
| DE19908056A1 (en) * | 1999-02-25 | 2000-08-31 | Curt Reichert | Leakage determination procedure |
| JP2004156748A (en) * | 2002-11-08 | 2004-06-03 | Jfe Koken Corp | Method and device for detecting contact position of embedded pipes |
| EP1865300A1 (en) * | 2006-06-07 | 2007-12-12 | Basell Poliolefine Italia S.r.l. | Self-diagnostic pipes |
| KR100965302B1 (en) * | 2008-05-06 | 2010-06-22 | 중앙제어 주식회사 | A apparatus for sensing a water leakage |
| CN102563363B (en) * | 2012-01-13 | 2014-03-19 | 深圳市祥为测控技术有限公司 | Liquid leakage detecting positioning system |
| CN102778631B (en) * | 2012-08-13 | 2014-06-18 | 重庆大学 | Method for detecting and accurately positioning leakage of a sensing cable based on partial pressure compensation |
| CN102967418B (en) * | 2012-11-23 | 2016-06-15 | 广东易事特电源股份有限公司 | A kind of leak localization system and device |
| CN105424293A (en) * | 2015-12-02 | 2016-03-23 | 深圳凌水环保科技股份有限公司 | Water supply-drainage pipe leak detection system and detection method |
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