CN105465614A - Water supply and drainage pipe leakage detecting system and method - Google Patents
Water supply and drainage pipe leakage detecting system and method Download PDFInfo
- Publication number
- CN105465614A CN105465614A CN201610088117.9A CN201610088117A CN105465614A CN 105465614 A CN105465614 A CN 105465614A CN 201610088117 A CN201610088117 A CN 201610088117A CN 105465614 A CN105465614 A CN 105465614A
- Authority
- CN
- China
- Prior art keywords
- composite pipe
- resistance
- detecting device
- unit
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
Landscapes
- 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 invention discloses a water supply and drainage pipe leakage detecting system and method. The detecting system comprises a composite pipe and a leakage detecting device. The leakage detecting device is provided with a detecting circuit. The composite pipe comprises an inner insulation layer, an outer insulation layer and a conductive layer arranged between the inner insulation layer and the outer insulation layer. Two poles of the leakage detection device are connected with the conductive layer, the leakage detection device is further provided with a grounded pole, and the grounded pole is arranged in a medium outside the composite pipe. When the whole pipe wall of the composite pipe or the outer insulation layer is broken, the ground insulation resistance of the leakage detection device changes. According to the water supply and drainage pipe leakage detecting system and method, the effects of carrying out earlier prediction and precisely locating the broken position when a water supply and drainage pipeline is broken are achieved, and the prevention capacity and first-aid repairing efficiency are greatly improved.
Description
Technical field
The present invention relates to water supply and sewerage pipeline leak water detdction technical field, particularly relate to a kind of supplying drainage leak detection system and detecting method.
Background technique
Urban Buried Pipeline Network is the buried blood vessel in underground in city, plays an important role in urban construction.Water supply line, flowing line, natural gas line etc. is embedded in underground all for a long time and plays a different role separately.Because early stage urban Underground pipeline plans comparatively backwardness, distribution situation numerous and complicated and buriedly cause pipeline in underground and be difficult to unified management, has manufactured many problems also to new town construction afterwards.The under ground piping that extended active duty, conduit deteriorates, geology variation, the situation such as bad of constructing easily cause leaks, and is the huge challenge during pipe network operation is safeguarded.Be difficult to location and monitoring because under ground piping leaks, and premature leak is more hidden is difficult to Timeliness coverage, brings challenge also to the safe operation of under ground piping and maintenance and repair.
Metropolitan underdrainage pipe network is widely distributed, and length even can reach thousands of miles.And current water supply network Leak testtion mainly by manual inspection, vehicle-mountedly to patrol and examine, the passive method such as common people's feedback processes.Therefore the daily manual inspection of pipeline network leak and vehicle-mounted workload of patrolling and examining are very heavy, and can not accomplish to leak timely detection.
The technological means professionally descending pipe detection to adopt is mainly by audition method, and professional workforce judges ducted leakage audio frequency by hearing prosthesis and positions.The method is greatly affected by environment, and general detection needs to be selected in noise relatively little night, and testing result relies on artificial judgment.Audition legal position leakage distance also has much relations with material, and pipe material is different, and measuring accuracy differs greatly.And the method is confined to only have and just judges to leak by sound when leaking in pipeline and acquiring a certain degree, and just can not find and implement countermeasure in early days in leakage.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of supplying drainage leak detection system and detecting method, to solve the problem that damage location, testing process trouble, detection facility complexity cannot be detected after unpredictable, breakage is leaked in the breakage of supplying drainage in prior art in time.
It is as follows that the present invention solves the problems of the technologies described above adopted technological scheme:
A kind of supplying drainage leak detection system, comprise composite pipe, leak detecting device, described leak detecting device is provided with testing circuit; Described composite pipe comprises inner insulating layer, external insulation layer, and is arranged at the conductive layer between described inner insulating layer and external insulation layer; Described leak detecting device connects described conductive layer, described leak detecting device is also provided with an earth electrode, described earth electrode is arranged in the medium outside composite pipe, and when described compound tube wall is overall or insulating outer layer occurs damaged, the change of the insulation against ground resistance of leak detecting device exceedes predefined value.
Further, described leak detecting device comprises power subsystem, signal generating unit, detection unit, processing unit and the electrical connection with medium outside composite pipe and composite pipe.
Further, described signal generating unit is used for as testing circuit provides testing signal; Described detection unit is used for the resistance to earth change in testing circuit, and described processing unit judges whether described change exceeds predefined value, and makes the whether damaged judgement of pipeline; Signal generating unit connects detection unit, forms measure loop with the conductive layer of composite pipe; Described signal generating unit is connection handling unit and earth electrode also.
Further, also comprise display unit or communication unit, described display unit is for showing the change of described testing signal; Described communication unit is used for Detection Information to be transferred to remote terminal.
Further, the testing circuit in described leak detecting device comprises signal source, total way switch K1, branch switch K2; Described signal source is connected with total way switch K1 and is distinguished connection bus+KM and earth electrode; Branch switch K2 connects with resistance R1, electric capacity C1, and with resistance R2 earth.
Further, described signal generating unit adopts alternating direct-current signal source.
And, a kind of supplying drainage leakage detection method is also provided, comprises
Leak detecting device loads testing signal to composite pipe;
If the insulation against ground resistance of described leak detecting device changes exceed setting value, side judges described composite pipe external insulation layer or overall generation breakage.
Further, described leak detecting device comprises power subsystem, signal generating unit, detection unit, processing unit and the electrical connection with medium outside composite pipe and composite pipe; Described signal generating unit is used for as testing circuit provides testing signal; Described detection unit is used for the resistance to earth change in testing circuit, and described processing unit judges whether described change exceeds predefined value, and makes the whether damaged judgement of pipeline; Signal generating unit connects detection unit, forms measure loop with the conductive layer of composite pipe; Described signal generating unit is connection handling unit and earth electrode also.
Further, the testing circuit in described leak detecting device comprises signal source, total way switch K1, branch switch K2; Described signal source is connected with total way switch K1 and is distinguished connection bus+KM and earth electrode; Branch switch K2 connects with resistance R1, electric capacity C1, and with resistance R2 earth.
Further, when signal source is direct current, close switch K1, K switch 2 are charged to electric capacity C1 by power of alterating and direct current; Disconnecting K1, electric capacity C1 initial voltage when being full of electricity is E, encourage induced potential E in tested loop, and generation current I in the loop, detect discharge current calculating resistance to earth R2, reach predefined value when canal electrical resistance changes, then judge that pipeline leaks.
Further, when signal source is for exchanging, by sending low frequency signal every straight coupling capacitance in alternating direct-current signal source, the pipeline ground connection when there is pipe leakage, low frequency signal forms path over the ground, low-frequency current is flow through in loop, detect on resistance R2 and produce low-frequency voltage, the leakage current values of insulation against ground resistance is calculated by Phase sensitive detector, according to ac voltage signal amplitude and the leakage current values of superposition, calculate insulation against ground resistance, when canal electrical resistance change reaches predefined value, then judge that pipeline leaks.
Further, also comprise leak source detecting step: composite pipe pipe ends arranges transmitter unit and receiving element, and composite pipe applies electromagnetic wave, when electromagnetic wave conducts along composite pipe, the interference part that generates electromagnetic waves is the position of location of leak.
The supplying drainage leak detection system that the present invention realizes and detecting method, can realize following beneficial effect:
1, to the accurate detection of pipe leakage, pipeline early seepage;
2, can effectively detect under ground piping and locate, reduce the workload that pipeline overhauls from underground excavation;
3, detecting method is affected by environment less, can increase work efficiency.
4, expansibility is strong, can realize the pipe network condition monitoring in certain limit by expanding unit.
If 5 pipeline outer walls are damaged and leak, the method still can carry out judging and locating, and as now carried out early warning and suitably process, will be more valuable.
Accompanying drawing explanation
Fig. 1 is composite pipe structure schematic diagram of the present invention;
Fig. 2 is leak detection system structural representation of the present invention;
Fig. 3 is Leak testtion circuit diagram of the present invention;
Fig. 4 is that detection and localization schematic diagram is leaked in the present invention;
Fig. 5 is leakage detection method schematic flow sheet of the present invention.
Embodiment
In order to make technical problem to be solved by this invention, technological scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one
A kind of supplying drainage leak detection system, as shown in Figure 2, comprises composite pipe as shown in Figure 1, is provided with fluid conductive medium 4 in composite pipe; Described composite pipe comprises inner insulating layer 1, external insulation layer 3, and the conductive layer 2 be arranged between described inner insulating layer 1 and external insulation layer 3, described conductive layer can be metal layer or other conducting medium layers, described inner insulating layer and external insulation layer are insulating polymer material, described composite pipe is as supplying drainage, general inside is tap water or sewage, but not getting rid of described composite pipe interior is other conductive medium; And leak detecting device, the two poles of the earth of described leak detecting device connect the conductive layer 2 of composite pipe, are connected with conductive layer holding point.Described leak detecting device is also provided with an earth electrode, and described earth electrode is arranged in the medium outside composite pipe, and described medium is generally fills soil; When described compound tube wall is overall or insulating outer layer occurs damaged, then represent the conducting medium outflow in composite pipe, or the filled media outside composite pipe there occurs with conductive layer 2 and contacts, the insulation against ground resistance of leak detecting device changes, and namely the insulation against ground level of composite pipe changes.
Specifically, as shown in Figure 2, described leak detecting device 100 comprises power subsystem 60, signal generating unit 10, detection unit 20, processing unit 30 and the electrical connection with medium outside composite pipe and composite pipe.Described signal generating unit 10 is used for as testing circuit provides testing signal.Described power subsystem 60 provides detection electric current for leak detecting device.Described detection unit 20 is for the resistance to earth change in testing circuit, and described processing unit 30 judges whether described change exceeds predefined value, and makes the whether damaged judgement of pipeline; Signal generating unit 10 connects detection unit 20, forms measure loop with the conductive layer of composite pipe; Described signal generating unit 10 is connection handling unit 30 and earth electrode also.
Conveniently show the testing result of leak detecting device, also comprise display unit; In order to make the testing result energy very first time of leak detecting device monitored people understand, also arrange communication unit, described communication unit is used for Detection Information to be transferred to remote terminal.
Described leak detecting device is provided with testing circuit as shown in Figure 3.Testing circuit in described leak detecting device comprises signal source, total way switch K1, branch switch K2; Described signal source is connected with total way switch K1 and is distinguished connection bus+KM and earth electrode; Branch switch K2 connects with resistance R1, electric capacity C1, and with resistance R2 earth.
When signal source is direct current, closed K1, K2 are charged to electric capacity C1 by power of alterating and direct current.
From RC circuit counting:
Suppose: V0 is the initial voltage value on electric capacity; V1 is the magnitude of voltage that electric capacity finally can be charged to or be put into; Vt is the magnitude of voltage on t electric capacity.
Then: Vt=V0+ (V1-V0) * [1-exp (-t/RC)], t=RC*Ln [(V1-V0)/(V1-Vt)] supposes: V0=0, V1=VCC, Vt=0.9VCC, then simplification of a formula is t/RC=ln (10)
Because ln10 approximates 2.3 namely t=2.3RC
Then can calculate the time t that electric capacity is full of electricity.
Disconnecting K1, electric capacity C1 initial voltage when being full of electricity is E.Induced potential E has been encouraged in tested loop, and generation current I in the loop, resistance to earth R2 can be calculated by detecting discharge current.When pipe leakage, composite pipe resistance variations reaches predefined value, then judge that composite pipe leaks, as required, be Operation system setting warning device and positioning device, described warning device sends alarm signal, described positioning device starts locating function, locks concrete leak position point.
When signal source is for exchanging, by sending low frequency signal every straight coupling capacitance in alternating direct-current signal source system.The pipeline ground connection when there is pipe leakage, low frequency signal forms path over the ground.Flow through low-frequency current in loop, the detection resistance R2 of device inside produces low-frequency voltage, is calculated the leakage current values of insulation against ground resistance by Phase sensitive detector.According to ac voltage signal amplitude and this leakage current values of superposition, calculate insulation against ground resistance.
When after confirmation pipe leakage, use characteristic electromagnetic ripple method to carry out leakage location as Fig. 4, pipe ends installs launching and receiving unit 70.Because pipe interior Structural Hardware is uniformly distributed, single direction input electromagnetic wave, can produce corresponding interference waveform when electromagnetic wave is transmitted to leakage point, can draw the exact position residing for location of leak A.
Optionally, the method that crosstalk analysis also can be selected in pipe leakage location, end reflects positions location of leak.
Optionally, pipeline leakage testing device also can be equipped with display unit, is used for carrying out very first time display to testing result by tutorial light or liquid crystal display.
Optionally, pipeline leakage testing device can be equipped with storage and communication unit as required, is used for carrying out data cube computation with mutual with other units or computer system, and the data provided based on detection device realize greater functionality application.
The leak detection system more than realized, composite pipe arranges leak detecting device, the situation of change of resistance to earth is detected by leak detecting device, when the change of resistance to earth reaches predefined value, namely judge that pipeline occurs damaged, determination methods is accurate, the simple cost of detection device is low, can also when a composite pipe generating portion surface insulation layer be damaged, just information warning can be sent, people can be made to make the decision of pipe-line maintenance in advance, can also when pipeline generation tube wall be completely damaged, accurately determine damage location, help quick position, greatly accelerate first-aid repair efficiency.
Embodiment two
Second embodiment of the invention provides a kind of supplying drainage leakage detection method, with reference to figure 5, comprises following steps:
S101, leak detecting device loads testing signal to composite pipe;
S102, if the insulation against ground resistance of described leak detecting device changes exceed setting value, then judges described composite pipe external insulation layer or overall generation breakage.
Concrete, described leak detecting device 100 comprises power subsystem 60, signal generating unit 10, detection unit 20, processing unit 30 and the electrical connection with medium outside composite pipe and composite pipe; Described signal generating unit 10 is used for as testing circuit provides testing signal; Described detection unit 20 is for the resistance to earth change in testing circuit, and described processing unit 30 judges whether described change exceeds predefined value, and makes the whether damaged judgement of pipeline; Signal generating unit connects detection unit, forms measure loop with the conductive layer of composite pipe; Described signal generating unit is connection handling unit and earth electrode also.
Testing circuit in described leak detecting device comprises signal source, total way switch K1, branch switch K2; Described signal source is connected with total way switch K1 and is distinguished connection bus+KM and earth electrode; Branch switch K2 connects with resistance R1, electric capacity C1, and with resistance R2 earth.
When signal source is direct current, close switch K1, K switch 2 are charged to electric capacity C1 by power of alterating and direct current; Disconnecting K1, electric capacity C1 initial voltage when being full of electricity is E, encourage induced potential E in tested loop, and generation current I in the loop, detect discharge current calculating resistance to earth R2, reach predefined value when canal electrical resistance changes, then judge that pipeline leaks.When signal source is for exchanging, by sending low frequency signal every straight coupling capacitance in alternating direct-current signal source, the pipeline ground connection when there is pipe leakage, low frequency signal forms path over the ground, flows through low-frequency current in loop, detect on resistance R2 and produce low-frequency voltage, calculated the leakage current values of insulation against ground resistance by Phase sensitive detector, according to ac voltage signal amplitude and the leakage current values of superposition, calculate insulation against ground resistance, when canal electrical resistance change reaches predefined value, then judge that pipeline leaks.
In order to when composite pipe occurs damaged, also comprise leak source detecting step: composite pipe pipe ends arranges transmitter unit and receiving element, composite pipe applies electromagnetic wave, and when electromagnetic wave conducts along composite pipe, the interference part that generates electromagnetic waves is the position of location of leak.
The leakage detection method more than realized, the situation of change of resistance to earth is detected by leak detecting device, when the change of resistance to earth reaches predefined value, namely judge that pipeline occurs damaged, determination methods is accurate, the simple cost of detection device is low, can also when a composite pipe generating portion surface insulation layer be damaged, just information warning can be sent, people can be made to make the decision of pipe-line maintenance in advance, when pipeline generation tube wall is completely damaged, accurately can also determine damage location, help quick position, greatly accelerate first-aid repair efficiency.
Above with reference to the accompanying drawings of the preferred embodiments of the present invention, not thereby limit to interest field of the present invention.Those skilled in the art do not depart from the scope and spirit of the present invention interior done any amendment, equivalent replacement and improve, all should within interest field of the present invention.
Claims (10)
1. a supplying drainage leak detection system, comprises: composite pipe, leak detecting device, and described leak detecting device is provided with testing circuit; Described composite pipe comprises inner insulating layer, external insulation layer, and is arranged at the conductive layer between described inner insulating layer and external insulation layer; Described leak detecting device connects described conductive layer, described leak detecting device is also provided with an earth electrode, described earth electrode is arranged in the medium outside composite pipe, and when described compound tube wall is overall or insulating outer layer occurs damaged, the insulation against ground resistance variations of leak detecting device exceedes predefined value.
2. supplying drainage leak detection system according to claim 1, is characterized in that: described leak detecting device comprises power subsystem, signal generating unit, detection unit, processing unit and the electrical connection with medium outside composite pipe conductive layer and composite pipe.
3. supplying drainage leak detection system according to claim 2, is characterized in that: described signal generating unit is used for providing testing signal for testing circuit, and described signal generating unit adopts alternating direct-current signal source; Described detection unit is used for the resistance to earth change in testing circuit, and described processing unit judges whether described change exceeds predefined value, and makes the whether damaged judgement of pipeline; Signal generating unit connects detection unit, forms measure loop with the conductive layer of composite pipe; Described signal generating unit is connection handling unit and earth electrode also.
4. supplying drainage leak detection system according to claim 2, is characterized in that: also comprise display unit or communication unit, described display unit is for showing the change of described testing signal; Described communication unit is used for Detection Information to be transferred to remote terminal.
5. supplying drainage leak detection system according to claim 1, is characterized in that: the testing circuit in described leak detecting device comprises signal source, total way switch K1, branch switch K2; Described signal source is connected with total way switch K1 and is distinguished connection bus+KM and earth electrode; Branch switch K2 connects with resistance R1, electric capacity C1, and with resistance R2 earth.
6., based on a supplying drainage leakage detection method for claim 1-5 detection system, it is characterized in that comprising:
Leak detecting device loads testing signal to composite pipe;
If the insulation against ground resistance of described leak detecting device changes exceed setting value, side judges described composite pipe external insulation layer or overall generation breakage.
7. supplying drainage leakage detection method according to claim 6, is characterized in that: described leak detecting device comprises power subsystem, signal generating unit, detection unit, processing unit and the electrical connection with medium outside composite pipe and composite pipe; Described signal generating unit is used for as testing circuit provides testing signal; Described detection unit is used for the resistance to earth change in testing circuit, and described processing unit judges whether described change exceeds predefined value, and makes the whether damaged judgement of pipeline; Signal generating unit connects detection unit, forms measure loop with the conductive layer of composite pipe; Described signal generating unit is connection handling unit and earth electrode also.
8. supplying drainage leakage detection method according to claim 6, is characterized in that: the testing circuit in described leak detecting device comprises signal source, total way switch K1, branch switch K2; Described signal source is connected with total way switch K1 and is distinguished connection bus+KM and earth electrode; Branch switch K2 connects with resistance R1, electric capacity C1, and with resistance R2 earth.
9. supplying drainage leakage detection method according to claim 8, is characterized in that: when signal source is direct current, and close switch K1, K switch 2 are charged to electric capacity C1 by power of alterating and direct current; Disconnecting K1, electric capacity C1 initial voltage when being full of electricity is E, encourage induced potential E in tested loop, and generation current I in the loop, detect discharge current calculating resistance to earth R2, reach predefined value when canal electrical resistance changes, then judge that pipeline leaks.
10. supplying drainage leakage detection method according to claim 8, it is characterized in that: when signal source is for exchanging, by sending low frequency signal every straight coupling capacitance in alternating direct-current signal source, the pipeline ground connection when there is pipe leakage, low frequency signal forms path over the ground, low-frequency current is flow through in loop, detect on resistance R2 and produce low-frequency voltage, the leakage current values of insulation against ground resistance is calculated by Phase sensitive detector, according to ac voltage signal amplitude and the leakage current values of superposition, calculate insulation against ground resistance, when canal electrical resistance change reaches predefined value, then judge that pipeline leaks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610088117.9A CN105465614B (en) | 2016-02-16 | 2016-02-16 | A kind of supplying drainage leak detection system and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610088117.9A CN105465614B (en) | 2016-02-16 | 2016-02-16 | A kind of supplying drainage leak detection system and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105465614A true CN105465614A (en) | 2016-04-06 |
| CN105465614B CN105465614B (en) | 2019-04-19 |
Family
ID=55603626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610088117.9A Active CN105465614B (en) | 2016-02-16 | 2016-02-16 | A kind of supplying drainage leak detection system and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105465614B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN110173628A (en) * | 2019-06-20 | 2019-08-27 | 胡雪菡 | A kind of water conservancy and hydropower leak water detdction automatic alarm device |
| CN110425426A (en) * | 2019-07-31 | 2019-11-08 | 上海勘测设计研究院有限公司 | Drainage pipeline networks detection system |
| CN111322525A (en) * | 2020-04-15 | 2020-06-23 | 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 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88210103U (en) * | 1988-01-29 | 1988-09-07 | 杨正程 | Leakage detector for composite insulation pipeline |
| JPH08166314A (en) * | 1994-12-14 | 1996-06-25 | Sekisui Chem Co Ltd | Damage detection method of pipe |
| JPH09236507A (en) * | 1995-12-26 | 1997-09-09 | Sumiei Kogyo Kk | Method for detecting water leakage portion of pipe embedded in the ground, cable for detecting water leakage portion, and pipe embedded in the ground |
| US20040163705A1 (en) * | 2001-12-21 | 2004-08-26 | Uhler Kenneth J. | System and method for monitoring and controlling utility systems |
| KR20080039570A (en) * | 2006-11-01 | 2008-05-07 | 류종국 | Water leakage sensing device of heat piping and its method |
| CN101246077A (en) * | 2007-06-24 | 2008-08-20 | 陈宜中 | Insulating tube water channel leak detecting method |
| CN103109170A (en) * | 2010-09-08 | 2013-05-15 | 原子能及能源替代委员会 | Leak detection device, and coating intended for a fluid transport or storage member and comprising said detection device |
| CN205560296U (en) * | 2016-02-16 | 2016-09-07 | 深圳凌水环保科技股份有限公司 | Water supply and drainage pipe leak testing system |
-
2016
- 2016-02-16 CN CN201610088117.9A patent/CN105465614B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88210103U (en) * | 1988-01-29 | 1988-09-07 | 杨正程 | Leakage detector for composite insulation pipeline |
| JPH08166314A (en) * | 1994-12-14 | 1996-06-25 | Sekisui Chem Co Ltd | Damage detection method of pipe |
| JPH09236507A (en) * | 1995-12-26 | 1997-09-09 | Sumiei Kogyo Kk | Method for detecting water leakage portion of pipe embedded in the ground, cable for detecting water leakage portion, and pipe embedded in the ground |
| US20040163705A1 (en) * | 2001-12-21 | 2004-08-26 | Uhler Kenneth J. | System and method for monitoring and controlling utility systems |
| KR20080039570A (en) * | 2006-11-01 | 2008-05-07 | 류종국 | Water leakage sensing device of heat piping and its method |
| CN101246077A (en) * | 2007-06-24 | 2008-08-20 | 陈宜中 | Insulating tube water channel leak detecting method |
| CN103109170A (en) * | 2010-09-08 | 2013-05-15 | 原子能及能源替代委员会 | Leak detection device, and coating intended for a fluid transport or storage member and comprising said detection device |
| CN205560296U (en) * | 2016-02-16 | 2016-09-07 | 深圳凌水环保科技股份有限公司 | Water supply and drainage pipe leak testing system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN110173628A (en) * | 2019-06-20 | 2019-08-27 | 胡雪菡 | A kind of water conservancy and hydropower leak water detdction automatic alarm device |
| CN110425426A (en) * | 2019-07-31 | 2019-11-08 | 上海勘测设计研究院有限公司 | Drainage pipeline networks detection system |
| CN111322525A (en) * | 2020-04-15 | 2020-06-23 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105465614B (en) | 2019-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106768736B (en) | A kind of subway tunnel monitoring of leakage and method for early warning | |
| CN105465614A (en) | Water supply and drainage pipe leakage detecting system and method | |
| CN105424293A (en) | Water supply-drainage pipe leak detection system and detection method | |
| CN106015953B (en) | A kind of supplying drainage and its leak detection system and detection method | |
| CN101358827B (en) | TEM detecting method for pipe wall thickness and intelligent detector for GBH pipe corrosion | |
| CN205175626U (en) | Water supply and drainage pipe leak testing system | |
| CN205560296U (en) | Water supply and drainage pipe leak testing system | |
| US20170268954A1 (en) | Pipeline Wireless Sensor Network | |
| CN104678229B (en) | A kind of grounding net of transformer substation corrosion monitoring system | |
| CN103063738A (en) | Detecting method of outer anti-corrosion layer of buried fuel gas steel pipeline | |
| CN106641741B (en) | A kind of device and method of the breaking point of the outer wall erosion resistant coating of the super buried depth pipeline of detection | |
| CN103927834B (en) | Underground utilities circumference invades and harasses early warning system | |
| CN110410685B (en) | Underground pipe network leakage positioning system and method based on time domain reflection technology | |
| JP2013217864A (en) | Method for detecting water leakage and water leakage detection device | |
| CN110609221A (en) | Automatic monitoring device for pipeline insulating joint and application method thereof | |
| CN108980636A (en) | Reserve underground leakage method of real-time | |
| US7095222B2 (en) | Leak detection method and system in nonmetallic underground pipes | |
| CN204573601U (en) | Based on the region rural water network system leak source early warning system of GIS | |
| KR100901176B1 (en) | Apparatus and method of monitering pipes of flow | |
| Ntambi et al. | Design of a water management system | |
| Fuad et al. | Water leak detection method in water distribution network | |
| CN211475525U (en) | Water supply pipeline leakage detection system | |
| CN112345173A (en) | Drain pipe leakage electrical property detection method | |
| Muggleton et al. | The design and instrumentation of an experimental rig to investigate acoustic methods for the detection and location of underground piping systems | |
| CN112923245B (en) | Method for exploring leakage of water supply network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |