CN203688500U - In-situ eddy current detection sensor for cracks of blade air film hole - Google Patents
In-situ eddy current detection sensor for cracks of blade air film hole Download PDFInfo
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- CN203688500U CN203688500U CN201320763940.7U CN201320763940U CN203688500U CN 203688500 U CN203688500 U CN 203688500U CN 201320763940 U CN201320763940 U CN 201320763940U CN 203688500 U CN203688500 U CN 203688500U
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- air film
- film hole
- eddy current
- blade air
- cracks
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Abstract
The utility model discloses an in-situ eddy current detection sensor for cracks of a blade air film hole. The in-situ eddy current detection sensor comprises a shell and a plurality of coils which are arranged in the shell, wherein a groove structure is arranged at one end of the shell; the shape of the groove structure is coincident to that of a three-dimensional curved structure around the blade air film hole. By using the in-situ eddy current detection sensor for the cracks of the blade air film hole, the in-situ detection of the cracks of the blade air film hole is achieved; by using an eddy current array idea, the detection coils are reasonably arranged, so that the problem of tooling accuracy is solved. The in-situ eddy current detection sensor for the cracks of the blade air film hole is high in sensitivity of discovering the cracks.
Description
Technical field
The utility model belongs to field of non destructive testing, and a kind of blade air film hole crackle original position Eddy Current Testing Transducer is provided especially.
Background technology
Conventional Eddy Current Testing Transducer designs by mobile scanning mode conventionally, sensor construction is simple, and in the time carrying out engine in situ detection, the special frock of normal employing is sent to sensor to tested position by limited three-dimensional space, cannot implement correct mobile scanning, and frock is difficult to reach too high precision in three dimensions transmission, cannot realize the inspection of air film hole crackle original position.
Utility model content
The purpose of this utility model is to provide a kind of blade air film hole crackle original position Eddy Current Testing Transducer, can effectively address the above problem.
The technical solution of the utility model is: a kind of blade air film hole crackle original position Eddy Current Testing Transducer, comprise shell and several coils of being located at enclosure, described shell one end is provided with groove structure, and the shape of described groove structure is consistent with blade air film hole three-dimension curved surface structure around.
Preferably, described coil is perpendicular to blade air film hole three-dimension curved surface, and described coil adopts arranged in arrays structure to be distributed on around air film hole.
Preferably, described arranged in arrays structure is the dislocation layout that two adjacent hub of a spools are wired to 90o.
Preferably, described coil is the flattened cylindrical coil with FERRITE CORE.
Preferably, described coil quantity is 4.
The utlity model has following useful effect:
The utility model blade air film hole crackle original position Eddy Current Testing Transducer has been realized the original position inspection to blade air film hole crackle, utilizes eddy current array thought, and the magnetic test coil of rationally arranging, has solved frock precision problem, finds that crack sensitivity is high.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Eddy Current Testing Transducer coil is to utilize alternating electromagnetic field and conductor to be coupled and in conductor certain area, produce variation and the crackle of vortex field to conductor electromagnetic performance to check simultaneously.The mutual alignment relation at Eddy Current Testing Transducer coil and the tested position of conductor is very large on the crackle Sensitivity impact at the tested position of conductor, the Sensitivity of hour crackle is the highest to facts have proved the vertical and distance in the tested position of cell winding and conductor, therefore for ensureing that cell winding is in optimum coupling state, design sensor contour structures adopts the method for three-dimensional replica, precision measurement blade air film hole around after three-dimension curved surface inverting obtain the three-dimension curved surface of sensor outer housing, to ensure after cell winding encapsulation perpendicular to blade air film hole three-dimension curved surface.Eddy Current Testing Transducer coil produces eddy effect in conductor, is mainly that the electromagnetic field that utilizes vortex field to produce causes that coil impedance changes to detect conductor crackle.Air film hole is blade crack initiation source, and test coil of eddy current should be distributed on around air film hole.The balanced bridge module of sensor magnetic test coil is placed in frock handle, while carrying out original position inspection, each magnetic test coil can produce vortex field separately, in the time that dropping on certain vortex field, crackle just can cause that the coil impedance that produces this vortex field changes, just can differentiate and have flawless by impedance change signal figure, in the time that crackle drops on the vortex field being produced by certain magnetic test coil, just can cause the impedance variation of this coil.
As shown in Figure 1, blade air film hole crackle original position Eddy Current Testing Transducer, comprises shell 1 and 4 coils 2 being located at shell 1 inside, and shell 1 one end is provided with groove structure, and the shape of groove structure is consistent with blade air film hole three-dimension curved surface structure around, coil 2 is perpendicular to blade air film hole three-dimension curved surface 3, each coil 2 structures are the flattened cylindrical coil with FERRITE CORE of (Ф 0.9mm × 3mm), it is 0.07mm that coil 2 is wound around copper wire diameter, coil 2 numbers of turn are 40 circles, coil 2 adopts arranged in arrays structure to be distributed on around air film hole, arranged in arrays structure is that two adjacent coil 2 lines of centres become the dislocation of 90o to arrange, this arrangement is taken into account frock X, the precision of Y both direction, while ensureing that original position checks, vortex field can coating gas fenestra crackle, after being connected, this Eddy Current Testing Transducer and frock carry out original position inspection.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (5)
1. a blade air film hole crackle original position Eddy Current Testing Transducer, comprise shell and several coils of being located at enclosure, it is characterized in that, described shell one end is provided with groove structure, and the shape of described groove structure is consistent with blade air film hole three-dimension curved surface structure around.
2. according to a kind of blade air film hole crackle original position Eddy Current Testing Transducer claimed in claim 1, it is characterized in that, described coil is perpendicular to blade air film hole three-dimension curved surface, and described coil adopts arranged in arrays structure to be distributed on around air film hole.
3. according to a kind of blade air film hole crackle original position Eddy Current Testing Transducer claimed in claim 2, it is characterized in that, described arranged in arrays structure is the dislocation layout that two adjacent hub of a spools are wired to 90o.
4. according to a kind of blade air film hole crackle original position Eddy Current Testing Transducer claimed in claim 3, it is characterized in that, described coil is the flattened cylindrical coil with FERRITE CORE.
5. according to a kind of blade air film hole crackle original position Eddy Current Testing Transducer claimed in claim 4, it is characterized in that, described coil quantity is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763940.7U CN203688500U (en) | 2013-11-26 | 2013-11-26 | In-situ eddy current detection sensor for cracks of blade air film hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763940.7U CN203688500U (en) | 2013-11-26 | 2013-11-26 | In-situ eddy current detection sensor for cracks of blade air film hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688500U true CN203688500U (en) | 2014-07-02 |
Family
ID=51010385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320763940.7U Expired - Fee Related CN203688500U (en) | 2013-11-26 | 2013-11-26 | In-situ eddy current detection sensor for cracks of blade air film hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688500U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271543A (en) * | 2017-06-16 | 2017-10-20 | 中国人民解放军第五七九工厂 | A kind of engine compressor three-level disk seam Zone R domain high-sensitivity eddy current detection method |
| CN109406620A (en) * | 2018-11-20 | 2019-03-01 | 中国航发贵州黎阳航空动力有限公司 | A kind of turbo blade leading edge eddy current probe |
| CN113109428A (en) * | 2021-03-18 | 2021-07-13 | 苏州九尚久电磁设备有限公司 | Eddy current detection and flaw detection equipment and detection and flaw detection method for rotating parts |
-
2013
- 2013-11-26 CN CN201320763940.7U patent/CN203688500U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271543A (en) * | 2017-06-16 | 2017-10-20 | 中国人民解放军第五七九工厂 | A kind of engine compressor three-level disk seam Zone R domain high-sensitivity eddy current detection method |
| CN109406620A (en) * | 2018-11-20 | 2019-03-01 | 中国航发贵州黎阳航空动力有限公司 | A kind of turbo blade leading edge eddy current probe |
| CN113109428A (en) * | 2021-03-18 | 2021-07-13 | 苏州九尚久电磁设备有限公司 | Eddy current detection and flaw detection equipment and detection and flaw detection method for rotating parts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140702 Termination date: 20171126 |