CN207514591U - A kind of pipe leakage acoustic detector and system - Google Patents
A kind of pipe leakage acoustic detector and system Download PDFInfo
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- CN207514591U CN207514591U CN201721289698.9U CN201721289698U CN207514591U CN 207514591 U CN207514591 U CN 207514591U CN 201721289698 U CN201721289698 U CN 201721289698U CN 207514591 U CN207514591 U CN 207514591U
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Abstract
The utility model discloses a kind of pipe leakage acoustic detector and systems, the pipe leakage acoustic detector includes front-end detection module and rear end clamp module, the front-end detection module and the rear end clamp module are respectively symmetrically set on the both sides of pipeline, the rear end clamp module is connect respectively with the both ends of the front-end detection module and the center of circle of cross section about tested pipeline is symmetrical arranged, utilize Sagnac principle of interference, echo detecting is carried out to the acoustic signals that pipe leakage generates by optical fiber, have the advantages that installation is simple using half-open snap ring-type structure design.
Description
Technical field
The present invention relates to technical field of nondestructive testing, especially a kind of pipe leakage acoustic detector and system.
Background technology
Today's society, the purposes of pipeline is very extensive, is used primarily in feedwater, draining, heat supply, gives gas, long distance delivery
In oil and natural gas, agricultural irrigation, hydraulic engineering and various commercial plants.However, pipeline is in different operating environments, hold
It is also easy to produce rupture and leaks.
When pipeline breaking generates leakage, pipeline internal medium all pours into rapidly leak under the action of pipeline pressure,
Spouting from leakage point, the medium ejected and damaged tube wall high-speed friction are formed in leak and are vibrated.The vibration generates
Sound wave propagated from leak to pipe ends.The relatively low infrasound signal of frequency can travel to far with pipeline and fluid
Distance.Highly sensitive sonic sensor mounted on pipeline head and the tail both ends can effectively obtain the signal, by obtaining
Signal analyzed and processed, can differentiate pipeline whether occur leak and leak position can be accurately positioned.
The height of accuracy of detection depends on the response speed of sensor and the transmission quality of signal, is let out at present applied to pipeline
The sonic sensor for leaking sound wave is realized using the vibration and electronics switch technology of physics principle, and position fixing process needs
GPS is authorized and software calculates to realize that leak source positions.Due to detecting system response lag, and easily by various electronic noises
With the influence of mechanical vibration noise, cause system stability difference and structure of the detecting device complexity to installation requirement strictly so as to
Limit use scope.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide a kind of pipe leakage acoustic detector, can use simple
Apparatus structure is effectively detected whether pipeline leaks, to improve the safety of conduit running.
In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of pipe leakage acoustic detector, including preceding
Detection module and rear end clamp module are held, the front-end detection module and the rear end clamp module are respectively symmetrically set on pipeline
On both sides, the rear end clamp module connect with the both ends of the front-end detection module and respectively about the cross section of tested pipeline
The center of circle be symmetrical arranged.
As the improvement of said program, the front-end detection module includes substrate, sensor fibre, 3DB couplers, flashlight
Fine and protection cap, the sensor fibre are distributed on the lateral surface of the substrate, and the 3DB couplers are connected to the sense light
Between fine and described signal optical fibre, the protection cap is covered on the outside of the sensor fibre, i.e., described sensor fibre is located at described
Between protection cap and the substrate.
As the improvement of said program, the substrate and the protection cap are semicircular structure, the substrate and described
Protection cap is fixedly connected by bolt.
As the improvement of said program, the sensor fibre is using back-shaped structure distribution on the lateral surface of the substrate.
As the improvement of said program, the rear end clamp module includes clamping buckle, and the front-end detection module further includes
Square groove, one end that the square groove is located at the front-end detection module is responsible for being fixedly connected with the clamping buckle, described
The other end of front-end detection module and the other end of the rear end clamp module are fixedly connected using bolt.
The present invention also provides a kind of pipe leakage acoustic wave sensing system, including controller and above-mentioned pipe leakage sound wave
Detection device, the analysis module include light source emitter, circulator and detector, and the circulator is sent out respectively with the light source
Emitter, the detector are connected with the pipe leakage acoustic detector by single mode optical fiber.
As the improvement of said program, the light source emitter emits continuous optical signal for detecting shaking for pipe under test
Emotionally condition, for the circulator for ensureing that the optical signal of transmission is transmitted with unidirectional dextrorotation, the detector turns the optical signal
Turn to acoustic signals.
Pipe leakage acoustic detector provided in an embodiment of the present invention and system, have the advantages that：
The embodiment of the present invention utilizes the situation of sagnac interferometer principle detection pipe leakage, the light source emitter hair
It penetrates continuous optical signal and is transmitted to the pipe leakage acoustic detector, the pipe leakage sound wave inspection by the circulator
Device is surveyed to be modulated the optical signal using sagnac interferometer principle and then again by modulated optical signals single mode
Optical fiber passes the circulator back into the detector, and the detector is converted to acoustic signals to modulated optical signal.Profit
With Sagnac principle of interference, the acoustic signals generated by optical fiber to pipe leakage are implemented without GPS time services and radio
Number, which passes, can carry out echo detecting, have the advantages that installation is simple using half-open snap ring-type structure design.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment 1 of pipe leakage acoustic detector provided by the invention；
Fig. 2 is the structure chart of the embodiment 1 of pipe leakage acoustic detector provided by the invention；
Fig. 3 is the structure diagram of pipe leakage acoustic wave sensing system provided by the invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of pipe leakage acoustic detector, including front-end detection mould
Block 1 and rear end clamp module 2, the front-end detection module 1 and the rear end clamp module 2 are respectively symmetrically set on the both sides of pipeline
On, the rear end clamp module 2 is connect respectively with the both ends of the front-end detection module 1 and cross section about tested pipeline
The center of circle is symmetrical arranged.The front-end detection module 1 includes substrate 101, sensor fibre 102,3DB couplers 106, signal optical fibre
105 and protection cap 103；The sensor fibre 102 uses back-shaped structure distribution on the lateral surface of the substrate 101, the 3DB
Coupler 106 is connected between the sensor fibre 102 and the signal optical fibre 105, and the protection cap 103 is covered in the biography
Photosensitive fine 102 outside, i.e., described sensor fibre 102 is between the protection cap 103 and the substrate 101.The substrate 101
It is semicircular structure with the protection cap 103 and passes through bolt and is fixedly connected.The rear end clamp module 2 includes clamping
Button 201, the front-end detection module 1 further includes square groove 104, and the square groove 104 is located at the one of the front-end detection module 1
End is responsible for being fixedly connected with the clamping buckle 201, the other end of the front-end detection module 1 and the rear end clamp module
2 other end is fixedly connected using bolt.
The embodiment of the present invention detects the leakage situation of pipe under test using Sagnac principle, when pipeline breaking is generated and let out
During leakage, pipeline internal medium all pours into rapidly leak under the action of pipeline pressure, spouting from leakage point, ejects
Medium and damaged tube wall high-speed friction, form in leak and vibrate.The sound wave that the vibration generates is from leak to pipe ends
It propagates.Photoelastic effect was generated when sound wave transmits scriptures the sensor fibre 102 with back-shaped structure according to pipe stress to be divided
Cloth situation can generate the interference light of different density degree, it is possible to understand that, the sound wave passes 102 inside of sensor fibre
Defeated optical signal produces modulating action.By modulated optical signal via the 3DB couplers 106 and the signal optical fibre
105 transmission outward.The embodiment of the present invention provides a kind of pipe leakage acoustic detector, and Sa is utilized using fiber optic sensor technology
Lattice nanogram interferometer principle is effectively detected whether pipeline leaks, and has installation simply using half-open snap ring-type structure design
The advantages of.
Referring to Fig. 3, the present invention also provides a kind of pipe leakage acoustic wave sensing system, including analysis module 10 and above-mentioned
Pipe leakage acoustic detector 20, the analysis module 10 include light source emitter 101, circulator 102 and detector 103,
The circulator 102 respectively with the light source emitter 101, the detector 103 and the pipe leakage acoustic detector
20 are connected by single mode optical fiber.The light source emitter 101 emits continuous optical signal for detecting the vibration feelings of pipe under test
Condition, the circulator 102 is for ensureing that the optical signal of transmission is transmitted with unidirectional dextrorotation, and the detector 103 is by the optical signal
It is converted into acoustic signals.
In the present embodiment, the light source emitter 101 emits continuous optical signal and is transmitted to by the circulator 102
The pipe leakage acoustic detector 20, the pipe leakage acoustic detector 20 will using sagnac interferometer principle
The optical signal, which is modulated and then passes modulated optical signals single mode optical fiber back the circulator 102 again, enters the spy
Device 103 is surveyed, the detector 103 is converted to acoustic signals to modulated optical signal.The embodiment of the present invention provides a kind of pipeline
Acoustic wave sensing system is leaked, using Sagnac principle of interference, the acoustic signals that pipe leakage generates are realized not by optical fiber
It needs GPS time services and radio number biography that can carry out echo detecting, there is installation simply using half-open snap ring-type structure design
Advantage.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principle of the present invention, several improvement and deformation can also be made, these are improved and deformation is also considered as
Protection scope of the present invention.
Claims (8)
1. a kind of pipe leakage acoustic detector, which is characterized in that described including front-end detection module and rear end clamp module
Front-end detection module and the rear end clamp module respectively symmetrically on the both sides of pipeline, the rear end clamp module with it is described
The both ends of front-end detection module connect respectively and the center of circle of cross section about tested pipeline is symmetrical arranged.
2. pipe leakage acoustic detector as described in claim 1, which is characterized in that the front-end detection module includes base
Bottom, sensor fibre, 3DB couplers, signal optical fibre and protection cap, the sensor fibre are distributed on the lateral surface of the substrate,
The 3DB couplers are connected between the sensor fibre and the signal optical fibre, and the protection cap is covered in the sense light
Fine outside, i.e., described sensor fibre is between the protection cap and the substrate.
3. pipe leakage acoustic detector as claimed in claim 2, which is characterized in that the substrate and the protection cap are equal
For semicircular structure, the substrate and the protection cap are fixedly connected by bolt.
4. pipe leakage acoustic detector as claimed in claim 2, which is characterized in that the sensor fibre uses back-shaped knot
Structure is distributed on the lateral surface of the substrate.
5. pipe leakage acoustic detector as described in claim 1, which is characterized in that the rear end clamp module includes folder
Link closely, the front-end detection module further includes square groove, the square groove be located at the front-end detection module one end be responsible for
The clamping buckle is fixedly connected, and the other end of the front-end detection module and the other end of the rear end clamp module use
Bolt is fixedly connected.
6. a kind of pipe leakage acoustic wave sensing system, which is characterized in that including analysis module and as Claims 1 to 5 is any
Pipe leakage acoustic detector described in.
7. pipe leakage acoustic wave sensing system as claimed in claim 6, which is characterized in that the analysis module is sent out including light source
Emitter, circulator and detector, the circulator respectively with the light source emitter, the detector and the pipe leakage sound
Wave detection device is connected by single mode optical fiber.
8. pipe leakage acoustic wave sensing system as claimed in claim 7, which is characterized in that the light source emitter transmitting is continuous
Optical signal be used to detecting the Vibration Condition of pipe under test, the circulator is for ensureing that the optical signal of transmission is passed with unidirectional dextrorotation
Defeated, the optical signal is converted into acoustic signals by the detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721289698.9U CN207514591U (en) | 2017-09-30 | 2017-09-30 | A kind of pipe leakage acoustic detector and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721289698.9U CN207514591U (en) | 2017-09-30 | 2017-09-30 | A kind of pipe leakage acoustic detector and system |
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| Publication Number | Publication Date |
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| CN207514591U true CN207514591U (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721289698.9U Active CN207514591U (en) | 2017-09-30 | 2017-09-30 | A kind of pipe leakage acoustic detector and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477374A (en) * | 2017-09-30 | 2017-12-15 | 必必优（深圳）科技有限公司 | A kind of pipe leakage acoustic detector, system and method |
-
2017
- 2017-09-30 CN CN201721289698.9U patent/CN207514591U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477374A (en) * | 2017-09-30 | 2017-12-15 | 必必优（深圳）科技有限公司 | A kind of pipe leakage acoustic detector, system and method |
| CN107477374B (en) * | 2017-09-30 | 2024-04-05 | 唐山市热力集团有限公司 | Pipeline leakage sound wave detection device, system and method |
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