CN106402665A - Detection device for leakage point of liquid pipeline - Google Patents
Detection device for leakage point of liquid pipeline Download PDFInfo
- Publication number
- CN106402665A CN106402665A CN201610874254.5A CN201610874254A CN106402665A CN 106402665 A CN106402665 A CN 106402665A CN 201610874254 A CN201610874254 A CN 201610874254A CN 106402665 A CN106402665 A CN 106402665A
- Authority
- CN
- China
- Prior art keywords
- ring
- detection device
- rear back
- pressure differential
- layer
- 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.)
- Pending
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
Abstract
A detection device for a leakage point of a liquid pipeline comprises a front stop ring (2) which is in a cylinder shape. The detection device further comprises a rear stop ring (5) which is also in a cylinder shape. The front stop ring (2) and the rear stop ring (5) are coaxial and the same in size. The detection device further comprises pressure detection pieces (4). Each pressure difference detection piece (4) comprises a piezoelectric layer (43), wherein the upper surface of the piezoelectric layer (43) is wrapped by an upper electric conduction layer (42a), the lower surface of the piezoelectric layer (43) is wrapped by a lower electric conduction layer (42b), the upper electric conduction layer (42a) is wrapped by an upper insulating layer (41a), the lower electric conduction layer (42b) is wrapped by a lower insulating layer (41b), and the two ends of the pressure difference detection piece (4) are inserted in the front stop ring (2) and the rear stop ring (5) correspondingly. The multiple pressure difference detection pieces (4) are arranged. The detection device further comprises a current sensor (6), a speedometer (31) and a data collecting storage device (7). The device can flexibly detect the liquid leakage point position.
Description
Technical field
The present invention relates to a kind of pipeline leakage point detection device is and in particular to a kind of fluid pipeline leakage point that is accurately positioned
Detection means.
Background technology
Pipeline is requisite for the transport of the valuable cargos such as running water, oil.Because these pipelines are most
It is embedded in urban road, river and ground or ocean, its Service Environment complexity, it is easy to suffer corrosion failure, leads to liquid
Leakage causes economy, environment and personal safety to bring loss.Especially when leakage rate is big, often cause irremediable heavy
Big loss.
Varied to the detection method of pipe leakage at this stage, it is relatively common method by audio detection.Using
Can advance in the duct propulsion plant, send audio frequency at any time, leakage point is found according to principles such as sound wave reflections.This method pair
More sensitive in the detection of larger leakage point, but the detection sensitivity performance for little leakage point is poor, and reason is equipment itself
Propulsion plant can make a noise, disturb sound wave, on the other hand, liquid quickly flows, itself also can produce noise, lead to sound wave
Detection means is insensitive for little leakage point.
Content of the invention
It is an object of the invention to provide a kind of detection leakage point pressure reduction leaks come the fluid pipeline to judge leakage point position
Point detection device.
To achieve these goals, the present invention includes, and including a front back-up ring, this front back-up ring is cylinder barrel shaped, also includes
Back-up ring after one, this rear back-up ring is also cylinder barrel shaped, and it is identical that described front back-up ring and rear back-up ring coaxially cut size, also includes pressure inspection
Survey piece, this pressure differential detection piece includes a piezoelectric layer, the upper conductive layer of this piezoelectric layer upper surface cladding, the lower conduction of lower surface cladding
Layer, the upper and lower insulating barrier of described upper and lower conductive layer outer cladding, the two ends of described pressure differential detection piece are plugged in front back-up ring and rear gear respectively
In circle, described pressure differential detection piece is multiple, and plug-in mounting point on front back-up ring and rear back-up ring for the pressure differential detection piece is uniformly distributed circumferentially；
Also include current sensor, the upper and lower of one end that this current sensor and pressure differential detection piece are plugged in rear back-up ring is led
Electric layer connects, and current sensor is fixed in rear back-up ring；
Circumferentially there are multiple pulleys in uniform branch to the external cylindrical surface of described front back-up ring and rear back-up ring, and described pulley is arranged
There is odometer, this odometer is fixed in rear back-up ring；
Described odometer is connected with a data acquisition memory, and described current sensor is with this data acquisition memory even
Connect.
Make bar dress using piezoelectric, when by pressure reduction, piezoelectric layer can bend, thus pressurized generation electric current, electric current
Current sensor, the size of the electric current of detection are transferred to by conductive layer.Liquid flowing simultaneously promote after before back-up ring and front back-up ring
Enter, the odometer that pulley carries calculates mileage.Mileage and size of current data are passed by odometer and current sensor simultaneously
Give data acquisition and storage device.Or can there is the number of pressure reduction in a certain fare register after this device is taken out from pipeline
According to such that it is able to judge there is leakage point at pipeline certain point.Detection due to pressure is subject to outward compared to the detection of sound
The impact of boundary's environment is little, and front back-up ring is identical with rear back-up ring size so that pressure differential detection piece is parallel with liquid flow direction, normally
In the case of, the two sides of pressure differential detection piece does not have pressure reduction, during pipeline leakage, pressure reduction can be sensitively detected very much.Therefore, even
Small leakage also can detect.
Preferably, described pulley includes a wheel carrier, and front back-up ring or the external cylindrical surface of rear back-up ring are fixed in one end of wheel carrier
On, also include wheel rim, wheel rim is positioned on wheel carrier, the excircle of wheel rim is close to the inner surface of pipeline.
Preferably, the external cylindrical surface of described front back-up ring and rear back-up ring is respectively fixed with four pulleys.
Preferably, the length of described pressure differential detection piece is not shorter than 30 centimetres, no longer than 50 centimetres.
Preferably, described piezoelectric layer is made up of Kynoar.
Brief description
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is pressure differential detection piece schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in detail.
As illustrated, the present invention includes, including a front back-up ring 2, this front back-up ring 2 is cylinder barrel shaped, after also including one
Back-up ring 5, this rear back-up ring 5 is also cylinder barrel shaped, and it is identical that described front back-up ring 2 and rear back-up ring 5 coaxially cut size, also includes pressure detecting
Piece 4, this pressure differential detection piece 4 includes a piezoelectric layer 43, the upper conductive layer 42a of this piezoelectric layer 43 upper surface cladding, and lower surface coats
Lower conductiving layer 42b, described upper and lower conductive layer 42a, 42b outer cladding upper and lower insulating barrier 41a, 41b, the two of described pressure differential detection piece 4
End is plugged in front back-up ring 2 and rear back-up ring 5 respectively, and described pressure differential detection piece 4 has multiple, and pressure differential detection piece 4 is in front back-up ring 2 He
Plug-in mounting point on back-up ring 5 is uniformly distributed circumferentially afterwards；
Also include current sensor 6, this current sensor 6 and pressure differential detection piece 4 be plugged in one end of rear back-up ring 2 upper,
Lower conductiving layer 42a, 42b connect, and current sensor 6 is fixed in rear back-up ring 5；
On the external cylindrical surface of described front back-up ring 2 and rear back-up ring 5, circumferentially uniformly there are multiple pulleys 3, described pulley 3 in branch
On be provided with odometer 31, this odometer 31 is fixed in rear back-up ring 5；
Described odometer 31 is connected with a data acquisition memory 7, described current sensor 6 and this data acquisition memory
7 connections.
Described pulley 3 includes a wheel carrier, and one end of wheel carrier is fixed on front back-up ring 2 or the external cylindrical surface of rear back-up ring 5, also
Including wheel rim, wheel rim is positioned on wheel carrier, and the excircle of wheel rim is close to the inner surface of pipeline 1.
Four pulleys 4 are respectively fixed with the external cylindrical surface of described front back-up ring 2 and rear back-up ring 5.
The length of described pressure differential detection piece 4 is not shorter than 30 centimetres, no longer than 50 centimetres
Described piezoelectric layer 43 is made up of Kynoar.
Make bar dress using piezoelectric, when by pressure reduction, piezoelectric layer can bend, thus pressurized generation electric current, electric current
Current sensor, the size of the electric current of detection are transferred to by conductive layer.Liquid flowing simultaneously promote after before back-up ring and front back-up ring
Enter, the odometer that pulley carries calculates mileage.Mileage and size of current data are passed by odometer and current sensor simultaneously
Give data acquisition and storage device.Or can there is the number of pressure reduction in a certain fare register after this device is taken out from pipeline
According to such that it is able to judge there is leakage point at pipeline certain point.Detection due to pressure is subject to outward compared to the detection of sound
The impact of boundary's environment is little, and front back-up ring is identical with rear back-up ring size so that pressure differential detection piece is parallel with liquid flow direction, normally
In the case of, the two sides of pressure differential detection piece does not have pressure reduction, during pipeline leakage, pressure reduction can be sensitively detected very much.Therefore, even
Small leakage also can detect.
Claims (5)
1. a kind of fluid pipeline leaks point detection device, and including a front back-up ring (2), this front back-up ring (2) is cylinder barrel shaped, also wraps
Back-up ring (5) after including one, this rear back-up ring (5) is also cylinder barrel shaped, and described front back-up ring (2) and rear back-up ring (5) coaxially cut size phase
With, also include pressure detecting piece (4), this pressure differential detection piece (4) one piezoelectric layer (43) of inclusion, this piezoelectric layer (43) upper table bread
It is covered with conductive layer (42a), lower surface cladding lower conductiving layer (42b), described upper and lower conductive layer (42a, 42b) outer cladding is exhausted up and down
Edge layer (41a, 41b), the two ends of described pressure differential detection piece (4) are plugged in front back-up ring (2) and rear back-up ring (5) respectively, described pressure
Difference detection lug (4) has multiple, and plug-in mounting point on front back-up ring (2) and rear back-up ring (5) for the pressure differential detection piece (4) is circumferentially uniformly minute
Cloth；
Also include current sensor (6), this current sensor (6) and pressure differential detection piece (4) are plugged in one end of rear back-up ring (2)
Upper and lower conductive layer (42a, 42b) connects, and current sensor (6) is fixed in rear back-up ring (5)；
On the external cylindrical surface of described front back-up ring (2) and rear back-up ring (5), circumferentially uniformly there are multiple pulleys (3), described cunning in branch
It is provided with odometer (31), this odometer (31) is fixed in rear back-up ring (5) on wheel (3)；
Described odometer (31) is connected with a data acquisition memory (7), and described current sensor (6) is stored with this data acquisition
Device (7) connects.
2. fluid pipeline leakage point detection device according to claim 1 is it is characterised in that described pulley (3) includes one
Individual wheel carrier, one end of wheel carrier is fixed on front back-up ring (2) or the external cylindrical surface of rear back-up ring (5), also includes wheel rim, wheel rim is positioned
On wheel carrier, the excircle of wheel rim is close to the inner surface of pipeline (1).
3. fluid pipeline according to claim 2 leakage point detection device it is characterised in that described front back-up ring (2) and after
Four pulleys (4) are respectively fixed with the external cylindrical surface of back-up ring (5).
4. fluid pipeline according to claim 3 leakage point detection device is it is characterised in that described pressure differential detection piece (4)
Length be not shorter than 30 centimetres, no longer than 50 centimetres.
5. fluid pipeline according to claim 3 leakage point detection device is it is characterised in that described piezoelectric layer (43) is by gathering
Vinylidene is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874254.5A CN106402665A (en) | 2016-09-30 | 2016-09-30 | Detection device for leakage point of liquid pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874254.5A CN106402665A (en) | 2016-09-30 | 2016-09-30 | Detection device for leakage point of liquid pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106402665A true CN106402665A (en) | 2017-02-15 |
Family
ID=59228615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610874254.5A Pending CN106402665A (en) | 2016-09-30 | 2016-09-30 | Detection device for leakage point of liquid pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402665A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420746A (en) * | 2017-07-26 | 2017-12-01 | 柳哲 | More logical Shape closed formula sensor |
| CN111536430A (en) * | 2020-05-09 | 2020-08-14 | 深圳市行健自动化股份有限公司 | Method for three-dimensionally positioning pipeline leakage monitoring based on temperature and humidity |
-
2016
- 2016-09-30 CN CN201610874254.5A patent/CN106402665A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420746A (en) * | 2017-07-26 | 2017-12-01 | 柳哲 | More logical Shape closed formula sensor |
| CN111536430A (en) * | 2020-05-09 | 2020-08-14 | 深圳市行健自动化股份有限公司 | Method for three-dimensionally positioning pipeline leakage monitoring based on temperature and humidity |
| CN111536430B (en) * | 2020-05-09 | 2022-02-18 | 深圳市行健自动化股份有限公司 | Method for three-dimensionally positioning pipeline leakage monitoring based on humidity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202074237U (en) | Pipeline leakage monitoring and negative pressure protecting device | |
| CN105467000B (en) | Buried pipeline tube body defect Indirect testing method and device | |
| US20130199272A1 (en) | In-pipe mobile cross-correlation-based system for leak detection | |
| CN104747912A (en) | Fluid conveying pipe leakage acoustic emission time-frequency positioning method | |
| CN104197205A (en) | Pipe network blocking detecting device | |
| CN106289121B (en) | A kind of computational methods of the equivalent pipe range of reducer pipe | |
| CN202814915U (en) | Pipeline flux leakage corrosion detector probe and pipeline flux leakage corrosion detector | |
| CN106813108A (en) | A kind of leakage locating method based on speed difference | |
| CN104100842A (en) | Pipeline monitoring device and system based on distributed fiber sensors and acoustic wave | |
| CN105953080B (en) | Soundwave leakage localization method based on homonymy sensor arrangement | |
| CN106402665A (en) | Detection device for leakage point of liquid pipeline | |
| CN206176050U (en) | Fluid pipeline leakage point detection device | |
| CN105423138A (en) | Intelligent detector for detecting leakage of oil-gas pipeline | |
| CN205118674U (en) | Pipeline leakage detection device | |
| CN207455197U (en) | Pipeline leakage testing positioning experiment system | |
| CN103364456A (en) | Method for simultaneously detecting flaws of metal body and anticorrosion thermal insulation layer of underground pipeline | |
| CN104100841A (en) | Pipeline monitoring method based on distributed fiber sensors and acoustic wave | |
| CN203940243U (en) | A kind of pipeline monitoring device and system based on distributed fiberoptic sensor and sound wave | |
| CN106195648B (en) | A kind of experimental test procedures of the equivalent pipe range of reducer pipe | |
| CN103363880B (en) | Pipeline girth weld joint identification and positioning method | |
| CN206459021U (en) | A kind of gas pipeline leakage detection means | |
| CN103423599B (en) | A kind of small leak detection ball for liquid pipeline | |
| CN202733454U (en) | Small leak detection ball for fluid pipeline | |
| RU2015142870A (en) | METHOD FOR SELECTIVE PRECISE DETERMINATION OF LOCAL GAS LEAKS | |
| CN108980631A (en) | A kind of negative pressure wave method pipeline leakage checking system based on in-circuit emulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |
|
| WD01 | Invention patent application deemed withdrawn after publication |