CN205175626U - Water supply and drainage pipe leak testing system - Google Patents
Water supply and drainage pipe leak testing system Download PDFInfo
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- CN205175626U CN205175626U CN201520986229.7U CN201520986229U CN205175626U CN 205175626 U CN205175626 U CN 205175626U CN 201520986229 U CN201520986229 U CN 201520986229U CN 205175626 U CN205175626 U CN 205175626U
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Abstract
The utility model discloses a water supply and drainage pipe leak testing system contains compound pipe, compound pipe contains an insulating inlayer, sets up a conducting layer outside insulating inlayer, still containing an equipment, setting up detection circuitry in the equipment, equipment's an electrode is connected conducting layer, another electrode set up at insulating inlayer inboardly, and when insulating inlayer was damaged, generate current or voltage signal were looped in to the detection circuitry in the equipment. The utility model discloses can and take measures by timely discovery when making water supply and drainage pipe take place the damage, perhaps can learn ruptured concrete position in the ruptured very first time, compare prior art, detect with low costsly, accurate and have foresight.
Description
Technical field
The utility model relates to supplying drainage leak detection technology field, particularly relates to a kind of supplying drainage leak detection system.
Background technology
The work of urban water supply and sewerage pipeline network construction is the important component part of urban planning and construction.Concerning urban construction, be inevitable problem because the reasons such as various natural cause (aging, corrosion etc.) and artificial construction cause water supply and sewerage pipeline to leak.The monitoring of at present water supply and sewerage pipeline being leaked and location more difficult.Main cause is due to the distributed more widely and situation numerous and complicated of water supply and sewerage pipeline, and secondly water supply and sewerage pipeline is buried in underground, and more difficult Timeliness coverage leaks and implements counter-measure.
Current municipal water supply and sewerage pipeline Leak Detection mainly leans on manual inspection, the common people report, the passive methods such as inspection, environmental monitoring of regularly breaking ground process, and large-scale network can engage professional detection company to check at some cycles, with high costs.Also some research institutions are had in addition by carrying out modeling to pipe network, arrange a large amount of sensors simultaneously, judge to leak in conjunction with the rule of pressure wave transmission and fluctuations in discharge in pipeline, but the method is because sensor accuracy and Cost Problems, generally apply in larger hydrocarbon pipeline, be not suitable for water supply and sewerage pipeline.
Current professional supplying drainage detects the technological means mainly acoustic sounding method adopted, concrete be exactly by listening rod judge to leak in pipeline sound size, carry out investigating by leak locator along pipeline and assisted by special correlator and determine leak source; There is equipment complex and expensive in the method, leak detection cost height is looked forward to and cannot be realized the problems such as early stage leak detection and preventive test; These problems are because pipeline seepage and corroded or destroyed in early days, but substantially do not have sound when also not forming leakage, so also cannot sound wave be detected.
Summary of the invention
The utility model provides a kind of supplying drainage leak detection system, being intended to solve prior art is carrying out in the process of Leak Detection to supplying drainage, there is detection difficult, checkout equipment is complicated or testing cost is very high and can not leaks the problem of making prediction to supplying drainage.
For realizing above technical purpose, the utility model provides a kind of supplying drainage leak detection system, comprises complex pipe, and the internal layer of described complex pipe is insulation course, arranges one deck conductive layer outside described inner insulation layer; Also comprise a leak detecting device, in described leak detecting device, testing circuit is set, conductive layer described in an Electrode connection of described leak detecting device, another electrode is arranged on inside insulation course, when insulation course is damaged, testing circuit in leak detecting device forms loop, generation current or voltage signal.
Further, described leak detecting device comprises signal generating unit, detecting unit, processing unit; Described signal generating unit is used for as institute's slowdown monitoring circuit provides required known signal or waveform; Described detecting unit is used for the change in voltage at curent change in testing circuit or resistance, inductance element two ends; Described processing unit is used for carrying out the whether damaged judgement of complex pipe according to described detecting unit, and reports judged result.
Further, described leak detecting device also comprises storage unit and communication unit, and described storage unit is for storing the detection data of described leak detecting device, and described communication unit is for sending described detection data to remote port.
Further, described complex pipe comprises conductive center, insulating outer layer, inner insulating layer.
Further, two electrodes of described leak detecting device are positioned on same continuous print complex pipe.
The supplying drainage leak detection system more than realized, by arranging leak detecting device on compound pipeline complex pipeline, can be detected by leak detecting device when complex pipe occurs damaged, not only effectively realize the various leakage detection and localization of water supply and sewerage pipeline, manpower is patrolled and examined in saving, and the impact that blindly excavation construction can be avoided to bring and great expense.Also achieve and detect for pipeline early seepage, be convenient to Timeliness coverage leakage point and take necessary counter-measure, more effectively avoid the secondary disasters such as soil pollution, pollution of waterhead or stratum landslide.
This pick-up unit also can be applicable to pipeline partial corrosion or destruction, but detection when also not forming leakage, the effective prevention of pipeline network leak can be realized by early warning, produce larger economic benefit.
Accompanying drawing explanation
Fig. 1 is supplying drainage diagrammatic cross-section;
A kind of supplying drainage leak detection system schematic diagram that Fig. 2 provides for the utility model embodiment one;
Fig. 3 be complex pipe completely damaged time Leak Detection schematic diagram;
Leak Detection schematic diagram when Fig. 4 is the breakage of complex pipe inwall.
Fig. 5 is leak position location Calculation schematic diagram.
Embodiment
Below with reference to accompanying drawing to specific implementation process of the present utility model with realize effect and be described in detail, should be appreciated that embodiment does not form the restriction to the utility model protection domain.
Embodiment one
With reference to figure 2, a kind of supplying drainage leak detection system that the utility model embodiment one provides, comprise complex pipe, described complex pipe comprises inner insulating layer, arranges a conductive layer outside described inner insulating layer; Also comprise a leak detecting device, in described leak detecting device, testing circuit is set, conductive layer described in an Electrode connection of described leak detecting device, another electrode is arranged on inside inner insulating layer, when complex pipe is damaged, testing circuit in leak detecting device forms loop, generation current or voltage signal.
Concrete, described complex pipe is minimum is double-layer structure, and namely internal layer is insulation course, such as PVC internal layer, and skin is metal level; Or complex pipe is made up of inner insulating layer 1, middle layer 2, insulating outer layer 3 as shown in Figure 1, middle layer 2 is conductive layer, and described conductive layer can be metal conducting layer or conductive film.Described complex pipe is embedded in underground, is generally used as plumbing, so be full of water or other fluid media (medium)s 4 in complex pipe.The damaged mode of complex pipe can be variform, and such as point-like is damaged or slit-like is damaged and fracture, as long as breakage reaches the depth of conducting medium and conductive layers make contact, namely meets the complex pipe described in the utility model damaged.
As shown in Figure 2, described complex pipe connects a leak detecting device 100, arranges testing circuit in leak detecting device 100, and leak detecting device 100 comprises signal generating unit 20, detecting unit 10, processing unit 30; Described signal generating unit 20 is used for as testing circuit provides required known signal or waveform; Described detecting unit 10 is for the change in voltage at the curent change in testing circuit or resistance, inductance element two ends; Described processing unit 30 for carrying out the whether damaged judgement of complex pipe according to described detecting unit, and is reported judged result.The conductive layer of an Electrode connection complex pipe of described leak detecting device 100, another electrode is arranged on the inner side of complex pipe inner insulating layer, when complex pipe is damaged, the two poles of the earth of leak detecting device 100 testing circuit are communicated with formation loop under the seepage of water, and in testing circuit, the two ends of generation current, resistance or inductance element produce voltage signal.Complex pipe breakage is divided into inner insulating layer breakage or the damaged two kinds of situations of whole compound tube wall, and such as, shown in Fig. 3, the whole tube wall of complex pipe is damaged; As shown in Figure 4, the inner insulating layer of complex pipe is damaged.No matter that water outside pipe enters outside the water effuser in pipe or in pipe, the water flowing through breakage all becomes the good conductor of electricity, testing circuit is made to form loop, generation current or voltage signal in testing circuit, namely described detecting unit 10 detects signal intensity, and processing unit 30 judges that complex pipe produces and leaks.Damaged iff inner insulating layer, then now leak detecting device 100 sends complex pipe as prior-warning device and is about to damaged early warning signal, people can be allowed to make counter-measure in time, avoid complex pipe breakage to have serious consequences.
When pipeline occurs to leak, the conductor in the water in pipeline or sewage and pipeline forms loop.Be now that conductive layer in complex pipe to load with the medium (water or sewage) flowing through pipeline and exchanges or DC voltage by the signal generating unit 20 of leak detecting device, leak detecting device 100 is measured by resistance in the electric current in detecting unit 10 or detecting unit/inductance element both end voltage by detecting unit 10, judges whether pipeline leaks according to the detection signal size recorded.
When device for detecting leakage 100 detects that pipeline has occurred or by when breaking, breakage can be recorded further or the particular location point occurred of breaking, the process judged is: electric current (or detecting unit resistance/inductance element records voltage) value measured according to the detecting unit 10 of leak detecting device 100, the magnitude of voltage loaded with reference to the signal generating unit 20 of leak detecting device 100 and leak detecting device internal resistance (constant), can extrapolate external circuit circuit impedance; In conjunction with the dielectric conductance rate in pipeline basal impedance data and pipeline, the position of pipeline generation leakage point distance check point can be calculated.Distance is calculated as follows:
Suppose to load direct current signal, with reference to figure 5:
I=U detection/R detection=U signal/(R pipeline section+R medium+R detects)
R pipeline section is relevant with length to R medium: R=ρ L/S, L=RS/ Ρ
Wherein: ρ is resistivity, L is length of material, and S is conductor area
R pipeline section is relevant with length to R medium: R=ρ L/S, L=RS/ Ρ
R pipeline section+R medium=R detects * U signal/U and detects-R detection=L (ρ 1/S1+ ρ 2/S2)
By above calculating, length of material L can be drawn.
Conveniently the leakage information detected is fed back to composite pipe network Surveillance center by leak detecting device 100, and described leak detecting device 100 also comprises communication unit 50, and described communication unit 50 is for sending described detection data to remote ports such as Surveillance center.And display unit 40, storage unit 70, power supply unit 60 are set, leak detecting device 100 can be facilitated to store detect data, display detects data and provide work energy for described leak detecting device 100.
Two electrodes of described leak detecting device are positioned on same continuous print complex pipe, or two of described leak detecting device electrodes are positioned on two sections of complex pipes continued, the center conducting layer of wherein said two sections of complex pipes continued is connected by conducting medium, and described leak detecting device can be made to monitor the leakage situation of continuous composite pipe or the complex pipe that continues.
In the utility model, leak detection system is mainly used in the pipe network damage testing being arranged at underground; can be clean water or sewage or other conducting mediums in described pipe network; as electrolytic solution; although described network collocation and underground; if but described network collocation is with on the ground; this leak detection system can be suitable for too, also within the scope of the utility model protection.
Above with reference to the accompanying drawings of preferred embodiment of the present utility model, not thereby limit to interest field of the present utility model.Those skilled in the art do not depart from any amendment done in scope of the present utility model and essence, equivalent replacement and improvement, all should within interest field of the present utility model.
Claims (5)
1. a supplying drainage leak detection system, comprises complex pipe, it is characterized in that, described complex pipe comprises an inner insulating layer, arranges a conductive layer outside described inner insulating layer; Also comprise a leak detecting device, described leak detecting device is provided with testing circuit, conductive layer described in an Electrode connection of described leak detecting device, and another electrode is arranged on inside inner insulating layer; When complex pipe is damaged, the testing circuit in leak detecting device forms loop, generation current or voltage signal.
2. supplying drainage leak detection system according to claim 1, is characterized in that, described leak detecting device comprises signal generating unit, detecting unit, processing unit; Described signal generating unit is used for the known signal that provides for testing circuit or waveform; Described detecting unit is for detecting the change in voltage at the curent change of described testing circuit or resistance, inductance element two ends; Described processing unit is used for judging that whether complex pipe is damaged according to the testing result of detecting unit, and reports judged result.
3. supplying drainage leak detection system according to claim 1, it is characterized in that, described leak detecting device also comprises storage unit and communication unit, described storage unit is for storing the detection data of described leak detecting device, and described communication unit is for sending described detection data to remote port.
4. supplying drainage leak detection system according to claim 1, is characterized in that, described complex pipe comprises conductive center, insulating outer layer, inner insulating layer.
5. supplying drainage leak detection system according to claim 1, is characterized in that, two electrodes of described leak detecting device are positioned on same continuous print complex pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520986229.7U CN205175626U (en) | 2015-12-02 | 2015-12-02 | Water supply and drainage pipe leak testing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520986229.7U CN205175626U (en) | 2015-12-02 | 2015-12-02 | Water supply and drainage pipe leak testing system |
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| CN205175626U true CN205175626U (en) | 2016-04-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106015953A (en) * | 2016-08-04 | 2016-10-12 | 深圳凌水环保科技股份有限公司 | Water feed and drainage pipe as well as leakage detection system and detection method thereof |
| CN106872125A (en) * | 2017-04-12 | 2017-06-20 | 华霆（合肥）动力技术有限公司 | Visit leakage device and battery management system |
| CN107883198A (en) * | 2017-11-07 | 2018-04-06 | 中国石油大学(华东) | A kind of oil-gas pipeline weld leakage monitoring device |
| CN108562410A (en) * | 2018-06-15 | 2018-09-21 | 中铁第六勘察设计院集团有限公司 | A kind of pipeline leakage point automatic monitoring warning system |
-
2015
- 2015-12-02 CN CN201520986229.7U patent/CN205175626U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106015953A (en) * | 2016-08-04 | 2016-10-12 | 深圳凌水环保科技股份有限公司 | Water feed and drainage pipe as well as leakage detection system and detection method thereof |
| CN106015953B (en) * | 2016-08-04 | 2019-05-10 | 深圳凌水环保科技股份有限公司 | A kind of supplying drainage and its leak detection system and detection method |
| CN106872125A (en) * | 2017-04-12 | 2017-06-20 | 华霆（合肥）动力技术有限公司 | Visit leakage device and battery management system |
| CN107883198A (en) * | 2017-11-07 | 2018-04-06 | 中国石油大学(华东) | A kind of oil-gas pipeline weld leakage monitoring device |
| CN108562410A (en) * | 2018-06-15 | 2018-09-21 | 中铁第六勘察设计院集团有限公司 | A kind of pipeline leakage point automatic monitoring warning system |
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