CN106015953B - A kind of supplying drainage and its leak detection system and detection method - Google Patents
A kind of supplying drainage and its leak detection system and detection method Download PDFInfo
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- CN106015953B CN106015953B CN201610630839.2A CN201610630839A CN106015953B CN 106015953 B CN106015953 B CN 106015953B CN 201610630839 A CN201610630839 A CN 201610630839A CN 106015953 B CN106015953 B CN 106015953B
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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
The invention discloses a kind of supplying drainage and supplying drainage leak detection system and detection methods, include: leak detecting device is equipped with detection circuit；Supplying drainage includes inner insulating layer and the test layer being set on the outside of the inner insulating layer, and test layer includes the first conductive layer and the second conductive layer, and interlayer insulating layer is arranged between the first conductive layer and the second conductive layer；The anode and cathode of leak detecting device are separately connected the first conductive layer and the second conductive layer；When supplying drainage occurs damaged, the conducting medium inside and outside supplying drainage is connected to the first conductive layer and the second conductive layer, the detection circuit forming circuit in leak detecting device.When the present invention leaks supplying drainage, the position of generation and the generation of incident of leakage in time, accurately, is easily detected, and easy to operate, exploitativeness is strong.
Description
Technical field
The present invention relates to supplying drainage leak detection technology field more particularly to a kind of supplying drainage and its leak detection systems
System and detection method.
Background technique
The work of urban water supply and sewerage pipeline network construction is the important component of urban planning and construction.For urban construction, by
It causes water supply and sewerage pipeline leakage to be inevitable in the reasons such as various natural causes (aging, corrosion etc.) and artificial construction to ask
Topic.It is more difficult for the monitoring and positioning of water supply and sewerage pipeline leakage at present.It is distributed more widely to be primarily due to water supply and sewerage pipeline
And situation numerous and complicated, secondly water supply and sewerage pipeline is buried in underground, it is more difficult to which discovery leaks and implements counter-measure in time.
The mainly manually inspection, common people's report, periodically break ground inspection, environment of current municipal administration water supply and sewerage pipeline leak detection
The passive approach such as monitoring are handled, and large-scale network can engage professional detection company to be checked in some cycles, with high costs.
In addition there are also research institutions by modeling to pipe network, a large amount of sensor is simutaneously arranged, in conjunction with pressure wave in pipeline
The rule of transmitting and changes in flow rate judges to leak, but this method is because of sensor accuracy and cost problem, generally in Large Oil
It is applied in gas pipeline, is not suitable for water supply and sewerage pipeline.
The technological means that current profession supplying drainage detection uses is mainly acoustic detection method, particularly as being to pass through listening rod
Come judge the size of leak sound in pipeline, checked by leak detector along pipeline and assisted by dedicated correlator really
Determine leak source；It is expensive that this method has that the device is complicated, and hunting leak enterprise at high cost and cannot achieve early stage leak detection and preventive test etc. and ask
Topic；These problems be because pipeline in early seepage and has corroded or has destroyed, but substantially without sound when having not yet been formed leakage,
So can not also detect sound wave.
Applicant mentions a kind of letting out for drainpipe in the patent application No. is 201510872171.8 of application in 2015
Missing inspection examining system and detection method, one layer of conductive layer is arranged in supplying drainage, and the electrode setting of leak detecting device is being given
In drainpipe, another electrode connecting conductive layer, when supplying drainage rupture, the positive and negative anodes of leak detecting device are connected to be formed back
Road issues detection signal.Due to being arranged an electrode of leak detecting device in supplying drainage, there are electrode setting is tired
Difficult problem, and since electrode is contacted with the fluid in supplying drainage for a long time, there are problems that electrode is oxidized, wears, destroys,
Uncontrollable factor is more, causes implementation cost higher.
Applicant mentions a kind of leak detection system of drainpipe in 201610088117.9 patents of application in 2016
And detection method, an electrode are arranged outside supplying drainage, equally exist the above problem.
Summary of the invention
The present invention provides a kind of supplying drainage and its leak detection system and detection method, it is intended to solve the prior art right
During supplying drainage carries out leak detection, there are detection difficult, detection device or method be complicated or testing cost very
It is high and the problem of making prediction cannot be leaked to supplying drainage.
In order to achieve the above object, the present invention provides a kind of supplying drainage leak detection system, include supplying drainage, leakage inspection
Device is surveyed, the leak detecting device is equipped with detection circuit；The supplying drainage includes inner insulating layer and is set in described
Test layer on the outside of insulating layer, the test layer include the first conductive layer and the second conductive layer, first conductive layer and second
Interlayer insulating layer is set between conductive layer；The anode and cathode of the leak detecting device are separately connected first conductive layer and the
Two conductive layers；When supplying drainage occurs damaged, the conducting medium inside and outside supplying drainage is connected to the first conductive layer and the second conduction
Layer, the detection circuit forming circuit in leak detecting device.
Further, the test layer be an entirety, the interlayer insulating layer be insulating substrate, first conductive layer and
Second conductive layer is the conductive layer that insulating substrate two sides are arranged in.
Further, the leak detecting device includes signal generating unit, detection unit, processing unit, storage list
Member, communication unit；Signal or waveform required for the signal generating unit is used to provide for detection circuit；The detection is single
Member is for detecting the voltage change of curent change or resistance both ends in the detection circuit or the voltage change at inductance both ends
Change；The processing unit is used to judge whether supplying drainage is in damaged state according to the testing result of detection unit；It is described
Storage unit is used to store the detection data of the leak detecting device, the communication unit for send the detection data to
Remote port.
In order to achieve the above object, comprising inner insulating layer and being set in described the present invention also provides a kind of supplying drainage
Test layer on the outside of insulating layer, the test layer include the first conductive layer and the second conductive layer, first conductive layer and second
Interlayer insulating layer is set between conductive layer.
Further, the test layer be an entirety, the interlayer insulating layer be insulating substrate, first conductive layer and
Second conductive layer is the conductive layer that insulating substrate two sides are arranged in.
It further, also include insulating outer layer, the outside of the test layer is arranged in the insulating outer layer.
It further, also include enhancement layer, the inner or outer side of the test layer is arranged in the enhancement layer.
And the present invention also provides a kind of detection method based on above-mentioned supplying drainage leak detection system, include:
The first conductive layer, another electrode of one electrode connection supplying drainage of leak detecting device connect supplying drainage
Second conductive layer applies signal to supplying drainage, monitors the current or voltage variation of the leak detecting device；
If the voltage or electric current of the leak detecting device change, it is damaged to determine that supplying drainage occurs, otherwise
Supplying drainage is intact.
Further, the voltage of the leak detecting device or electric current, which change, includes: inspection in leak detecting device
Curent change occurs for survey time road, and either the voltage at resistance both ends generates variation or the both ends of inductance element generate voltage change
Change.
Further, the leak detecting device will test data and locally save or be sent to long-range preservation.
The supplying drainage and its leak detection system and detection method of implementation above, by being arranged two layers in water supply and sewerage pipeline
Conductive layer, the two poles of the earth of leak detecting device are separately connected one of conductive layer, two conductions when supplying drainage occurs damaged
Layer is formed into a loop the detection circuit of leak detecting device through conducting medium connection, to make the judgement of pipeline breaking, compares
The prior art not only effectively realizes the various leakage detection and localizations of water supply and sewerage pipeline, saves inspection manpower, and can avoid blind
Mesh excavation construction bring influences and great expense；It also achieves and is detected for pipeline early seepage, convenient for discovery leakage in time
It puts and takes necessary counter-measure, more effectively avoid the secondary disasters such as soil pollution, pollution of waterhead or stratum landslide.And it lets out
The setting of device for detecting leakage is more convenient, and exploitativeness is good.
The detection system and detection method apply also for pipeline partial corrosion or destruction, but when leakage has not yet been formed
Detection, the effective prevention that pipeline network leak is realized in early warning can be passed through, generate bigger economic benefit.
Detailed description of the invention
Fig. 1 is a kind of supplying drainage diagrammatic cross-section that first embodiment of the invention provides；
Fig. 2 is another supplying drainage diagrammatic cross-section that first embodiment of the invention provides；
Fig. 3 is the test layer structural profile illustration that first embodiment of the invention provides；
Fig. 4 is a kind of supplying drainage leak detection system that second embodiment of the invention provides；
Fig. 5 is a kind of supplying drainage leakage detection method flow diagram that third embodiment of the invention provides.
Specific embodiment
To specific implementation process of the invention and realize that effect is described in detail below with reference to attached drawing, it should be understood that
Embodiment does not constitute limiting the scope of the invention.
Embodiment one
With reference to Fig. 1, a kind of supplying drainage that the embodiment of the present invention one provides is used for plumbing, as shown in Figure 1, comprising interior
Insulating layer 1 and the test layer 3 for being set to 1 outside of inner insulating layer, the test layer 3 includes the first conductive layer 31 and second
Interlayer insulating layer 33 is arranged in conductive layer 32 between first conductive layer 31 and the second conductive layer 32.Inner insulating layer 1, which is arranged, to be given
The insulating layer of drainpipe innermost layer, material can for PVC, PP, PPR, PE any one.Test layer 3 is for connecting leak detection
Device, test layer include two conductive layers i.e. the first conductive layer 31 and the second conductive layer 32, and first conductive layer is led with second
It is isolated between electric layer by interlayer insulating layer 33.As shown in figure 3, the test layer is an entirety, interlayer insulating layer is insulating substrate,
First conductive layer and the second conductive layer are the conductive layer that insulating substrate two sides are arranged in.After inner insulating layer extrusion forming,
It is provided as the test layer 3 of an entirety in the outside of inner insulating layer 1, or conductive in the outside of inner insulating layer 1 package first
Then layer 31 wraps up interlayer insulating layer in the outside of the first conductive layer 31, the interlayer insulating layer can be layer of plastic film, then
The second conductive layer 32 is wrapped up in the outside of interlayer insulating layer 33.The mode that operation can be practiced as one kind, in existing plumbing
Existing supplying drainage, can be transformed into the supplying drainage that can be used for leak detection by the whole test layer of package on the outside of pipe.
As other supplying drainage structures, such as the supplying drainage in order to realize more preferable rigidity, it is set in supplying drainage
Enhancement layer is set, the enhancement layer can be steel mesh.The enhancement layer can be set between the inner insulating layer and test layer,
It can be set and be arranged on the outside of test layer.
Further, it as shown in Fig. 2, one layer of external insulation layer 2 is arranged in the outside of the outer supplying drainage, forms another kind and gives
Drain structure, test layer 3 are set between inner insulating layer 1 and external insulation layer 2.
The supplying drainage of implementation above is used for plumbing, by the way that two conductive layers are being arranged in supplying drainage, leads for two layers
It is dielectrically separated between electric layer, forms the supplying drainage for being used for leak detection.
Embodiment two
With reference to Fig. 4, a kind of supplying drainage leak detection system provided by Embodiment 2 of the present invention is provided comprising embodiment
Supplying drainage, leak detecting device, the supplying drainage include inner insulating layer and the survey being set on the outside of the inner insulating layer
Layer is tried, the test layer includes the first conductive layer and the second conductive layer, is arranged between first conductive layer and the second conductive layer
Interlayer insulating layer.
The leak detecting device is equipped with detection circuit；The leak detecting device includes signal generating unit, detection
Unit, processing unit, storage unit, communication unit；Required for the signal generating unit is used to provide for detection circuit
Signal or waveform, the signal include current signal or voltage signal；The detection unit is for detecting in the detection circuit
Curent change or resistance both ends voltage change or inductance both ends voltage change；The processing unit is used for basis
The testing result of detection unit judges whether supplying drainage is in damaged state；The storage unit is for storing the leakage inspection
The detection data of device is surveyed, the communication unit is for sending the detection data to remote port.
As shown in figure 4, the anode and cathode of the leak detecting device 100 are separately connected and the first conductive layer of drainpipe
31 and second conductive layer 32；When supplying drainage occurs damaged, the first conductive layer of conducting medium connection 31 inside and outside drainpipe with
Second conductive layer 32, the detection circuit forming circuit in leak detecting device 100, signal generating unit 20 provide for detection circuit
Required signal or waveform；The voltage that detection unit 10 detects curent change or resistance both ends in the detection circuit becomes
The voltage change at change or inductance both ends；Processing unit 30 judges whether supplying drainage is located according to the testing result of detection unit 10
In damaged state；Storage unit 70 stores the detection data of the leak detecting device, and communication unit 50 sends the testing number
According to remote port is arrived, display unit 40 shows the testing result of detection unit 10.No matter supplying drainage be from inside rupture or from
Outside rupture, as long as the connection of the first conductive layer and the second conductive layer occurs for test layer, representing the existing slight crack of supplying drainage will
Rupture has ruptured, and leak detecting device 100 issues supplying drainage and issues warning signal at this time, and people can make reply in time
Measure avoids supplying drainage breakage from having serious consequences.
When device for detecting leakage 100 detects that pipeline has occurred and that or will rupture, can further measure brokenly
The particular location point that damage or rupture occur, the process of judgement are as follows: the electricity measured according to the detection unit 10 of leak detecting device 100
Flow (or detection unit resistance/inductance element measures voltage) value, the load of signal generating unit 20 with reference to leak detecting device 100
Voltage value and leak detecting device internal resistance (constant), external circuit circuit impedance can be extrapolated；In conjunction with pipeline basic impedance number
According to the dielectric conductance rate in pipeline, can calculate that position of the leakage point apart from test point occurs for pipeline.Distance calculates as follows:
Assuming that load direct current signal:
I=U detection/R detection=U signal/(R pipeline section+R medium+R detection)
R pipeline section is related with length to R medium: R=ρ L/S, L=RS/ Ρ
Wherein: ρ is resistivity, and L is length of material, and S is conductor area
R pipeline section is related with length to R medium: R=ρ L/S, L=RS/ Ρ
R pipeline section+R medium=R detection * U signal/U detection-R detection=L (ρ 1/S1+ ρ 2/S2)
By calculating above, length of material L can be obtained.
Two electrodes of the leak detecting device are located on same continuous supplying drainage or leak detection dress
Two electrodes set are located on the supplying drainage of two sections of connectings, wherein the corresponding conductive layer of the supplying drainage of two sections of connectings
It is connected by conducting medium, the leak detecting device can be made to monitor continuous supplying drainage or connect the leakage feelings of supplying drainage
Condition.
Embodiment three
With reference to Fig. 5, the embodiment of the present invention three provides a kind of supplying drainage leakage detection method based on said detecting system,
Include:
S101, the first conductive layer, another electrode of one electrode connection supplying drainage of leak detecting device connect discharge
Second conductive layer of water pipe applies signal to supplying drainage, monitors the current or voltage variation of the leak detecting device.
Specifically, the supplying drainage, includes inner insulating layer and the test layer being set on the outside of the inner insulating layer, institute
State test layer include the first conductive layer and the second conductive layer, between first conductive layer and the second conductive layer setting insulation every
Layer.For test layer for connecting leak detecting device, i.e. the first conductive layer and the second conductive layer are separately connected leak detecting device
Anode and cathode.
The leak detecting device includes signal generating unit, detection unit, processing unit；The signal occurs single
Member is used to provide detection current or voltage signal for detection circuit；The detection unit in detection circuit curent change or
Person's resistance, inductance element both ends voltage change；The processing unit is used to carry out supplying drainage according to the detection unit
Whether Po Sun judgement, and judging result is reported.When supplying drainage is intact, the two poles of the earth of the leak detecting device it
Between be not connected to, there is no current or voltage variable signal in the detection circuit of leak detecting device.When supplying drainage occurs damaged,
The detection circuit of leak detecting device is connected to the first conductive layer and the second conductive layer forming circuit, detection under the action of water conductor
Electric current is generated in circuit, resistance or inductance element both ends generate voltage.
S102 determines that supplying drainage inner wall occurs if the voltage or electric current of the leak detecting device change
Breakage, otherwise supplying drainage is intact.
Specifically, the voltage or electric current of the leak detecting device change, refers in leak detecting device and generate
Measure loop electric current or resistance-inductance element both ends generate voltage, if the voltage of the leak detecting device or electric current occur
It is damaged then to determine that supplying drainage occurs for variation, and otherwise supplying drainage is intact.The leak detecting device will test data and locally protect
Deposit or be sent to long-range preservation.
When having been detected by generation or will rupture, according to the current value or electricity detected in detection circuit
Resistance/inductance element both ends voltage value and on-load voltage value and detection circuit internal resistance constant, extrapolate the circuit of external circuit
Impedance；In conjunction with the dielectric conductance rate in pipeline basic impedance data and pipeline, obtains pipeline and leakage point occurs apart from test point
Position.Distance calculates as follows:
Assuming that load direct current signal, with reference to Fig. 5:
I=U detection/R detection=U signal/(R pipeline section+R medium+R detection)
R pipeline section is related with length to R medium: R=ρ L/S, L=RS/ Ρ
Wherein: ρ is resistivity, and L is length of material, and S is conductor area
R pipeline section is related with length to R medium: R=ρ L/S, L=RS/ Ρ
R pipeline section+R medium=R detection * U signal/U detection-R detection=L (ρ 1/S1+ ρ 2/S2)
By calculating above, length of material L can be obtained.
The supplying drainage and supplying drainage leak detection system and method for implementation above, are situated between using with bilayer conductive
Leak detecting device is set on the supplying drainage of matter, allows which root canal supplying drainage accurately knows when occurring damaged at the first time
Which position occur it is damaged.Compared with prior art, structure is simple and detection is accurate and effective, greatly for system and method
Leak detection cost is reduced, there is extraordinary application value.
Leak detection system and detection method are mainly used for being set to the pipe network damage testing of underground in the present invention, described
It can be clean water or sewage or other conducting mediums in pipe network, such as electrolyte, although the network collocation and underground, such as
Network collocation described in fruit and ground, this leak detection system and detection method can be similarly applicable in, and also be protected in the present invention
Within the scope of.
Preferred embodiments of the present invention have been described above with reference to the accompanying drawings, not thereby limiting the scope of the invention.This
Field technical staff without departing from the scope and spirit of the invention in made by any modifications, equivalent replacements, and improvements, should all this
Within the interest field of invention.
Claims (5)
1. a kind of supplying drainage, it is characterised in that: comprising inner insulating layer and the test layer being set on the outside of the inner insulating layer,
The test layer include the first conductive layer and the second conductive layer, between first conductive layer and the second conductive layer setting insulation every
Layer；It also include insulating outer layer and enhancement layer, the outside of the test layer is arranged in the insulating outer layer, and the enhancement layer setting exists
The inner or outer side of the test layer.
2. supplying drainage according to claim 1, it is characterised in that: the test layer be an entirety, it is described insulation every
Layer is insulating substrate, and first conductive layer and the second conductive layer are the conductive layer that insulating substrate two sides are arranged in.
3. a kind of supplying drainage leak detection system, includes supplying drainage, leak detecting device, the leak detecting device is equipped with
Detection circuit；The supplying drainage includes inner insulating layer and the test layer being set on the outside of the inner insulating layer, the test
Layer includes the first conductive layer and the second conductive layer, and interlayer insulating layer is arranged between first conductive layer and the second conductive layer；Also wrap
Containing insulating outer layer and enhancement layer, the outside of the test layer is arranged in the insulating outer layer, and the enhancement layer is arranged in the survey
Try the inner or outer side of layer；The anode and cathode of the leak detecting device are separately connected first conductive layer and the second conduction
Layer；When supplying drainage occurs damaged, the conducting medium inside and outside supplying drainage is connected to the first conductive layer and the second conductive layer, leakage
Detection circuit forming circuit in detection device.
4. supplying drainage leak detection system according to claim 3, it is characterised in that: the test layer is one whole
Body, the interlayer insulating layer are insulating substrate, and first conductive layer and the second conductive layer are that leading for insulating substrate two sides is arranged in
Electric layer.
5. supplying drainage leak detection system according to claim 3, which is characterized in that the leak detecting device packet
Containing signal generating unit, detection unit, processing unit, storage unit, communication unit；The signal generating unit is used for as inspection
Signal required for slowdown monitoring circuit provides or waveform；The detection unit be used to detect curent change in the detection circuit or
The voltage change at resistance both ends or the voltage change at inductance both ends；The processing unit is used for the detection according to detection unit
As a result judge whether supplying drainage is in damaged state；The storage unit is used to store the testing number of the leak detecting device
According to the communication unit is for sending the detection data to remote port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610630839.2A CN106015953B (en) | 2016-08-04 | 2016-08-04 | A kind of supplying drainage and its leak detection system and detection method |
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| CN201610630839.2A CN106015953B (en) | 2016-08-04 | 2016-08-04 | A kind of supplying drainage and its leak detection system and detection method |
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| CN106015953B true CN106015953B (en) | 2019-05-10 |
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| CN107219043A (en) * | 2017-05-15 | 2017-09-29 | 安凯 | A kind of water-sensitive sensor and its application method in underground piping leak water detdction |
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| CN108626581A (en) * | 2018-05-03 | 2018-10-09 | 国网安徽省电力有限公司培训中心 | Water supply network leaks automatic positioning equipment |
| CN108518587A (en) * | 2018-06-05 | 2018-09-11 | 国网安徽省电力有限公司培训中心 | A kind of leak autoalarm |
| CN109268699A (en) * | 2018-10-25 | 2019-01-25 | 北京无线电计量测试研究所 | A kind of line leakage system and method |
| CN109488889B (en) * | 2018-11-09 | 2023-05-12 | 上海金艺检测技术有限公司 | On-line detection method for in-service metal pipeline insulation lining layer condition |
| CN111336409A (en) * | 2018-12-19 | 2020-06-26 | 福建纳川管业科技有限责任公司 | Plastic pipe with double-layer conductive layer |
| CN110017429A (en) * | 2019-04-02 | 2019-07-16 | 德淮半导体有限公司 | A kind of liquid line and the method for detection liquid line leakage |
| CN111322525B (en) * | 2020-04-15 | 2022-02-08 | 湖州市南浔创业测绘与土地规划院股份有限公司 | Underground pipeline detection method |
| CN112483907B (en) * | 2020-11-10 | 2022-02-11 | 深圳市祥为测控技术有限公司 | Pipeline leakage detection system and method |
| CN113623051A (en) * | 2021-07-07 | 2021-11-09 | 东风汽车集团股份有限公司 | Crankcase breather pipe, detection device and detection method |
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| CN106015953A (en) | 2016-10-12 |
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