CN208547606U - A kind of pulse eddy current sensor device - Google Patents
A kind of pulse eddy current sensor device Download PDFInfo
- Publication number
- CN208547606U CN208547606U CN201821155149.7U CN201821155149U CN208547606U CN 208547606 U CN208547606 U CN 208547606U CN 201821155149 U CN201821155149 U CN 201821155149U CN 208547606 U CN208547606 U CN 208547606U
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- China
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- cylindrical tube
- tube skeleton
- layer cylindrical
- magnetic core
- outer layer
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Abstract
A kind of pulse eddy current sensor device, including outer layer cylindrical tube skeleton, the surface wrap excitation coil of outer layer cylindrical tube skeleton, excitation coil are equipped with the first signal wire；Internal layer cylindrical tube skeleton is provided in outer layer cylindrical tube skeleton, the outer surface of internal layer cylindrical tube skeleton winds receiving coil, and receiving coil is equipped with second signal line；Magnetic core is provided between outer layer cylindrical tube skeleton and internal layer cylindrical tube skeleton, magnetic core surfaces externally and internally is wrapped up in tetrafluoro cloth bag to be installed tightly between outside cylinder cannon born frame and interior cylindrical tube skeleton；In use, the surface wrap excitation coil of outer layer cylindrical tube skeleton, the energy of electromagnetic field inspired is big, and is able to achieve the space-focusing of electromagnetic field；It can be improved the detection sensitivity of pit corrosion, poroid corrosion and parallel pipeline corrosion sites；The utility model has technique advanced, reliable performance, and work safety is stablized；Signal-to-noise ratio is high, the high advantage of detection sensitivity.
Description
Technical field
The utility model relates to sensor, in particular to a kind of pulse eddy current sensor device.
Background technique
Pipeline transportation has become one of five big transfer ways, with active time for transporting especially for metallic conduit
Increase, buried metal pipeline will appear corrosion, and main forms of corrosion has, poroid corrosion, pit corrosion and the corrosion of area shape.
Conventional coil is lower for poroid and pit corrosion detection sensitivity.At corrosive pipeline wall thickness can thinning formation perforation make to be situated between in pipe
Matter, which leaks, causes safety accident.Traditional pulse eddy current sensor device mainly excites wink to space by monocoil form
Electromagnetic Field, traditional pulse eddy current sensor device have the disadvantages that
1. traditional pulse eddy current sensor device is small in the transient electromagnetic field energy that space is formed and out-focus, due to metal
There are resistance for tube body, and the eddy current effect formed when causing to be diffused into metal pipe surface is smaller, therefore receiving coil can not acquire
To effective voltage signal.
It, can not be right 2. traditional pulse eddy current sensor device encounters parallel pipeline spacing of the detection depth less than 1.5 times
Pipe body corrosion position carries out precise positioning.
3. traditional pulse eddy current sensor device is not high for pit corrosion and poroid Corrosion monitoring sensitivity.
4. the design of traditional pulse eddy current sensor device circuit is not sufficiently stable, volume is larger, and testing cost is high.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of pulse eddy current sensor device, tool
There is excitation magnetic field energy big, the characteristics such as focusing capability is strong and field frequency is abundant, and pit corrosion, poroid corrosion and simultaneously can be improved
The characteristics of detection sensitivity of row corrosive pipeline position.
In order to achieve the above object, the technical solution adopted in the utility model are as follows:
A kind of pulse eddy current sensor device, including outer layer cylindrical tube skeleton 3, the surface wrap of outer layer cylindrical tube skeleton 3
Excitation coil 1, excitation coil 1 are connected with the first signal wire 8；Internal layer cylindrical tube skeleton 4 is provided in outer layer cylindrical tube skeleton 3,
The outer surface of internal layer cylindrical tube skeleton 4 winds receiving coil 2, and receiving coil 2 is connected with second signal line 9；Outer layer cylinder cannon born
Magnetic core 5 is provided between frame 3 and internal layer cylindrical tube skeleton 4,5 surfaces externally and internally tetrafluoro cloth 6 of magnetic core package is installed tightly to outer circle
Between column tube skeleton 3 and interior cylindrical tube skeleton 4.
The magnetic core 5 is assembled into magnetic core cylinder by multiple circular ring type magnetic core columns 7.
The magnetic core 5 is assembled by four 1/4 circular ring type magnetic core columns 7, and four 1/4 circular ring type magnetic core columns 7 use
Different magnetic materials.
The utility model has the advantages that
The surface wrap excitation coil 1 of the utility model outer layer cylindrical tube skeleton 3, the energy of electromagnetic field inspired is big, and
It is able to achieve the space-focusing of electromagnetic field；It is sensitive to can be improved pit corrosion, poroid corrosion and the detection of parallel pipeline corrosion sites
Degree.Circuit design and manufacturing process are advanced, reliable performance, and work safety is stablized；Signal-to-noise ratio is high, and detection sensitivity is high.
Magnetic core 5 uses different magnetic materials, keeps the transient electromagnetic field amplitude of excitation big, and frequency content is abundant, is conducive to
It extracts and effectively receives signal.
Detailed description of the invention
Fig. 1 is the general structure schematic diagram of the utility model.
Fig. 2 is the sectional view of the utility model.
Specific embodiment
Referring to Fig. 1-2, a kind of pulse eddy current sensor device, including outer layer cylindrical tube skeleton 3, outer layer cylindrical tube skeleton 3
Surface wrap excitation coil 1, excitation coil 1 is equipped with the first signal wire 8；Internal layer circle is provided in outer layer cylindrical tube skeleton 3
The outer surface of column tube skeleton 4, internal layer cylindrical tube skeleton 4 winds receiving coil 2, and receiving coil 2 is equipped with second signal line 9；Outside
It is provided with magnetic core 5 between layer cylindrical tube skeleton 3 and internal layer cylindrical tube skeleton 4,5 surfaces externally and internally tetrafluoro cloth 6 of magnetic core wraps up closely
It is mounted between outside cylinder cannon born frame 3 and interior cylindrical tube skeleton 4.The magnetic core 5 is assembled by four 1/4 circular ring type magnetic core columns 7
It forms, and four 1/4 circular ring type magnetic core columns 7 use different magnetic materials, and is securely attached to be formed together magnetic core circle
Cylinder.
Working principle of the utility model is:
In use, the surface wrap excitation coil 1 of outer layer cylindrical tube skeleton 3, the energy of electromagnetic field inspired is big, and can be real
The outer surface of the space-focusing of existing electromagnetic field, internal layer cylindrical tube skeleton 4 winds receiving coil 2, the first signal wire 8 and second signal
Line 9 is used to input and receive signal, and it is sensitive to can be improved pit corrosion, poroid corrosion and the detection of parallel pipeline corrosion sites
Degree；Magnetic core 5 is assembled by four 1/4 circular ring type magnetic core columns 7, and four 1/4 circular ring type magnetic core columns 7 use different magnetism
Material, different magnetic materials keep the transient electromagnetic field amplitude of excitation big, and frequency content is abundant, are conducive to extract effective reception
Signal.
Claims (3)
1. a kind of pulse eddy current sensor device, which is characterized in that including outer layer cylindrical tube skeleton (3), outer layer cylindrical tube skeleton
(3) surface wrap excitation coil (1), excitation coil (1) are equipped with the first signal wire (8)；It is set in outer layer cylindrical tube skeleton (3)
It is equipped with internal layer cylindrical tube skeleton (4), the outer surface of internal layer cylindrical tube skeleton (4) winds receiving coil (2), receiving coil (2) peace
Equipped with second signal line (9)；Magnetic core (5), magnetic core are provided between outer layer cylindrical tube skeleton (3) and internal layer cylindrical tube skeleton (4)
(5) surfaces externally and internally tetrafluoro cloth (6) package is installed tightly between outside cylinder cannon born frame (3) and interior cylindrical tube skeleton (4).
2. a kind of pulse eddy current sensor device according to claim 1, which is characterized in that the magnetic core (5) is by more
A circular ring type magnetic core column (7) is assembled into magnetic core cylinder.
3. a kind of pulse eddy current sensor device according to claim 1 or 2, which is characterized in that the magnetic core (5) by
Four 1/4 circular ring type magnetic core columns (7) are assembled, and four 1/4 circular ring type magnetic core columns (7) use different magnetic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821155149.7U CN208547606U (en) | 2018-07-20 | 2018-07-20 | A kind of pulse eddy current sensor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821155149.7U CN208547606U (en) | 2018-07-20 | 2018-07-20 | A kind of pulse eddy current sensor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208547606U true CN208547606U (en) | 2019-02-26 |
Family
ID=65425129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821155149.7U Expired - Fee Related CN208547606U (en) | 2018-07-20 | 2018-07-20 | A kind of pulse eddy current sensor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208547606U (en) |
-
2018
- 2018-07-20 CN CN201821155149.7U patent/CN208547606U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190226 Termination date: 20190720 |