CN204758533U - Leak magnetic sensor probe - Google Patents
Leak magnetic sensor probe Download PDFInfo
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- CN204758533U CN204758533U CN201520435639.2U CN201520435639U CN204758533U CN 204758533 U CN204758533 U CN 204758533U CN 201520435639 U CN201520435639 U CN 201520435639U CN 204758533 U CN204758533 U CN 204758533U
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Abstract
The utility model belongs to the technical field of leak magnetic sensor, concretely relates to leak magnetic sensor probe, the problem of the technique is solved for: the utility model provides a technology advanced person, dependable performance, job stabilization's leak magnetic sensor probe, the technical scheme who adopts does: a leak magnetic sensor probe, includes that the both ends face opens porose cylindrical casing, shells inner wall is equipped with one deck magnetic conduction layer, be equipped with the round draw -in groove on the magnetic conduction layer, the draw -in groove coparallel has clamped two blocks of round ring circuit boards, two the signal number of pass of circuit board is outside according to line connection to casing, the inside both ends of casing are overlapped respectively and are equipped with first permanent magnet and the second permanent magnet that sets up for the draw -in groove symmetry, the structure of first permanent magnet and second permanent magnet is the same and be the cylinder, the structure of first permanent magnet does: its axial is equipped with the through -hole, is equipped with an in situ in the through -hole and fills up, the utility model is suitable for a material field of detecting a flaw.
Description
Technical field
The utility model belongs to the technical field of leakage field sensor, is specifically related to a kind of probe of magnetic flux leakage sensor.
Background technology
In the field of non destructive testing taking electromagnetics as basic theories, defect within 8mm can only be detected in order to solve eddy current flaw detector, the problem of inside workpiece defect cannot be detected, leakage field sensor arises at the historic moment, for the pipeline of wall thickness within 30mm, leakage field sensor can detect the defect of internal and external walls, the presence or absence judgement of defect can not only be realized, entry evaluation can also be carried out to the extent of injury of defect, and in order to obtain high-quality leakage field sensor, design a kind of technique advanced person, dependable performance, working stability probe of magnetic flux leakage sensor seem most important.
Utility model content
The utility model overcomes the deficiency that prior art exists, and technical matters to be solved is: the probe of magnetic flux leakage sensor providing a kind of technique advanced person, dependable performance, working stability.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of probe of magnetic flux leakage sensor, comprise the cylindrical housings that both ends of the surface have hole, described inner walls is provided with one deck magnetic layer, described magnetic layer is provided with a circle draw-in groove, on described draw-in groove, parallel card is equipped with two pieces of annular circuit boards, and the signal of two pieces of described circuit boards is connected to outside by data line; Described enclosure interior two ends are respectively installed with first permanent magnet symmetrically arranged relative to draw-in groove and the second permanent magnet, described first permanent magnet is identical with the structure of the second permanent magnet and be right cylinder, the structure of described first permanent magnet is: it is axially arranged with through hole, is provided with pad in one deck in through hole.
Described first permanent magnet is spliced by two semicylinders, and described two semicylinders are equipped with semi-circular recesses, and described two semi-circular recesses form the axially extending bore of the first permanent magnet; Respectively on the two sides that two pieces of described circuit boards are opposing be evenly provided with the identical multiple Hall elements of quantity, described multiple Hall element is arranged to a circle along the inner periphery of circuit board; Described magnetic layer is provided with wire hole, and described data line is connected to outside through wire hole; Described magnetic layer is made up of ingot iron; Described interior pad is made up of plastics, and described housing is made up of nonmagnetic substance.
The utility model compared with prior art has following beneficial effect: in the utility model, probe of magnetic flux leakage sensor comprises the cylindrical housings that both ends of the surface have hole, inner walls is provided with one deck magnetic layer, magnetic layer is provided with a circle draw-in groove, on draw-in groove, parallel card is equipped with two pieces of annular circuit boards, the signal of two pieces of circuit boards is connected to outside by data line, enclosure interior two ends are respectively installed with first permanent magnet symmetrically arranged relative to draw-in groove and the second permanent magnet, first permanent magnet is identical with the structure of the second permanent magnet and be right cylinder, the structure of the first permanent magnet is: it is axially arranged with through hole, pad in one deck is provided with in through hole, during use, first workpiece for measurement is magnetized, make it have certain magnetic flux density, then by the opening of workpiece for measurement through housing two ends, the through hole of the first permanent magnet and the second permanent magnet and two pieces of circuit boards detect, if surface of the work or nearly surface have defect, stray field can be produced at fault location, circuit board is by detecting the interaction of stray field and additional magnetic particle, the position of defect can be detected, shape and size, and the flaw indication detected is carried out processing and analyzing to outside by data line transfer, manufacture craft of the present utility model is advanced, dependable performance, working stability, practicality is extremely strong.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail;
Fig. 1 is external structure schematic diagram of the present utility model;
Fig. 2 is the semisectional view of Fig. 1;
Fig. 3 is the structural representation of circuit board in the utility model;
In figure: 1 is housing, 2 is magnetic layer, and 3 is draw-in groove, and 4 is circuit board, and 5 is the first permanent magnet, and 6 is the second permanent magnet, and 7 is through hole, and 8 is interior pad, and 9 is Hall element, and 10 is the first wire hole, and 11 is the second wire hole.
Embodiment
As shown in FIG. 1 to 3, a kind of probe of magnetic flux leakage sensor, comprise the cylindrical housings 1 that both ends of the surface have hole, described housing 1 can by aluminium, the nonmagnetic substances such as plastics are made, described housing 1 inwall is provided with one deck magnetic layer 2, described magnetic layer 2 can be made up of ingot iron, described magnetic layer 2 is provided with a circle draw-in groove 3, in the present embodiment, described draw-in groove 3 can be arranged at the middle part of magnetic layer 2, on described draw-in groove 3, parallel card is equipped with two pieces of annular circuit boards 4, annular circuit board 4 described in every block can be spliced by two pieces of semi-circular ring, the signal of two pieces of described circuit boards 4 is connected to housing 1 outside by data line, the described inner two ends of housing 1 are respectively installed with first permanent magnet 5 and second permanent magnet 6 symmetrically arranged relative to draw-in groove 3, described first permanent magnet 5 is identical with the structure of the second permanent magnet 6 and be right cylinder, described first permanent magnet 5 and the second permanent magnet 6 can be Fe-B rare-earth permanent magnet, and all can adopt radial magnetizing, in the present embodiment, the structure of described first permanent magnet 5 is: it is axially arranged with through hole 7, and be provided with pad 8 in one deck in through hole 7, described interior pad 8 can be made up of plastics.
Described first permanent magnet 5 can be spliced by two semicylinders, and described two semicylinders are equipped with semi-circular recesses, and described two semi-circular recesses form the axially extending bore 7 of the first permanent magnet 5; Respectively on the two sides that two pieces of described circuit boards 4 are opposing be evenly provided with the identical multiple Hall elements 9 of quantity, described multiple Hall element 9 is arranged to a circle along the inner periphery of circuit board 4, and the sensitive surface distance between the Hall element 9 on two pieces of circuit boards 4 can adjust according to actual needs; In addition, described magnetic layer 2 is provided with the first wire hole 10, and described housing 1 is provided with the second wire hole 11, and it is outside that described data line is connected to housing 1 through the first wire hole 10 and the second wire hole 11 successively.
The utility model is reasonable in design, technique is advanced, dependable performance, working stability, can be used for the detection of various magnetic material, as the online of the workpiece such as steel pipe, rod iron, steel wire or off-line flaw detection, compared with EDDY CURRENT, Magnetic Flux Leakage Inspecting has can large, advantage pipe material inner wall to certain detectability of depth sounding degree, has substantive distinguishing features and progress; By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (7)
1. a probe of magnetic flux leakage sensor, it is characterized in that: comprise the cylindrical housings (1) that both ends of the surface have hole, described housing (1) inwall is provided with one deck magnetic layer (2), described magnetic layer (2) is provided with a circle draw-in groove (3), the upper parallel card of described draw-in groove (3) is equipped with two pieces of annular circuit boards (4), and the signal of two pieces of described circuit boards (4) is connected to housing (1) outside by data line; Described housing (1) inner two ends are respectively installed with relative to symmetrically arranged first permanent magnet (5) of draw-in groove (3) and the second permanent magnet (6), described first permanent magnet (5) is identical with the structure of the second permanent magnet (6) and be right cylinder, the structure of described first permanent magnet (5) is: it is axially arranged with through hole (7), is provided with pad (8) in one deck in through hole (7).
2. a kind of probe of magnetic flux leakage sensor according to claim 1, it is characterized in that: described first permanent magnet (5) is spliced by two semicylinders, described two semicylinders are equipped with semi-circular recesses, and described two semi-circular recesses form the axially extending bore (7) of the first permanent magnet (5).
3. a kind of probe of magnetic flux leakage sensor according to claim 1, it is characterized in that: respectively on the two sides that two pieces of described circuit boards (4) are opposing be evenly provided with the identical multiple Hall elements (9) of quantity, described multiple Hall element (9) is arranged to a circle along the inner periphery of circuit board (4).
4. a kind of probe of magnetic flux leakage sensor according to claim 1, it is characterized in that: described magnetic layer (2) is provided with the first wire hole (10), described housing (1) is provided with the second wire hole (11), and it is outside that described data line is connected to housing (1) through the first wire hole (10) and the second wire hole (11) successively.
5. a kind of probe of magnetic flux leakage sensor according to claim 1, is characterized in that: described magnetic layer (2) is made up of ingot iron.
6. a kind of probe of magnetic flux leakage sensor according to claim 1, is characterized in that: described interior pad (8) is made up of plastics.
7. a kind of probe of magnetic flux leakage sensor according to claim 1, is characterized in that: described housing (1) is made up of nonmagnetic substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520435639.2U CN204758533U (en) | 2015-06-23 | 2015-06-23 | Leak magnetic sensor probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520435639.2U CN204758533U (en) | 2015-06-23 | 2015-06-23 | Leak magnetic sensor probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204758533U true CN204758533U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520435639.2U Active CN204758533U (en) | 2015-06-23 | 2015-06-23 | Leak magnetic sensor probe |
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| CN (1) | CN204758533U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037179A (en) * | 2018-01-25 | 2018-05-15 | 哈尔滨工业大学深圳研究生院 | Ferromagnetic component non-destructive testing device and its detection method based on crowded magnetic structure |
| CN108548546A (en) * | 2018-04-13 | 2018-09-18 | 哈尔滨德利亚电子科技有限公司 | Carry on the back magnetic-type hall device sectional shelf-unit, magnetic steel mounting device and installation method |
-
2015
- 2015-06-23 CN CN201520435639.2U patent/CN204758533U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037179A (en) * | 2018-01-25 | 2018-05-15 | 哈尔滨工业大学深圳研究生院 | Ferromagnetic component non-destructive testing device and its detection method based on crowded magnetic structure |
| CN108548546A (en) * | 2018-04-13 | 2018-09-18 | 哈尔滨德利亚电子科技有限公司 | Carry on the back magnetic-type hall device sectional shelf-unit, magnetic steel mounting device and installation method |
| CN108548546B (en) * | 2018-04-13 | 2020-08-28 | 哈尔滨德利亚电子科技有限公司 | Back magnetic Hall device combined support, magnetic steel mounting device and mounting method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |