CN202442994U - Rotary magnetic yoke for magnetic powder detection of still kettle teeth - Google Patents
Rotary magnetic yoke for magnetic powder detection of still kettle teeth Download PDFInfo
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- CN202442994U CN202442994U CN2012200844158U CN201220084415U CN202442994U CN 202442994 U CN202442994 U CN 202442994U CN 2012200844158 U CN2012200844158 U CN 2012200844158U CN 201220084415 U CN201220084415 U CN 201220084415U CN 202442994 U CN202442994 U CN 202442994U
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- yoke
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- still kettle
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- 238000001514 detection method Methods 0.000 title abstract description 16
- 239000006247 magnetic powder Substances 0.000 title 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000006249 magnetic particle Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002964 excitative effect Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
Still cauldron tooth is rotatory yoke for magnetic particle testing, including handle, mount, the handle sets up on the mount, its characterized in that the bottom of mount is the vertical branch that is equipped with many formation magnetic poles downwards, and the winding has the coil on every branch, the lower extreme of branch is connected with adjusts the pole. The beneficial effects are as follows: 1. the length of each magnetic pole can be adjusted by adjustably connecting the support rod and the adjusting rod which form the magnetic pole, so that the detection surfaces with different heights can be adapted, and the detection on the kettle teeth of different types of kettles is facilitated; 2. simple structure, more in the manufacturing, be favorable to the marketing to be used.
Description
[technical field]
The fast detecting problem of surfaces such as the utility model belongs to the magnetic detection range of Non-Destructive Testing, refers in particular to the detection of still kettle still tooth magnetic with the rotation yoke, solution still kettle still fissure line and near surface flaw.
[background technology]
It is the effective ways of detected pressures vessel surface and near surface flaw that magnetic detects, and can be used for still kettle still tooth and detect.
Magnetic detects ultimate principle: after ferrimagnet and workpiece are magnetized; Because the existence of uncontinuity; Make the magnetic line of force on surface of the work and nearly surface local distortion take place and produce stray field; Absorption is applied to the magnetic of surface of the work, is formed on appropriate light and shines visual visible magnetic trace down, thereby demonstrate position, shape and the size of uncontinuity.
Magnetic detects general yoke or the crossed yoke of using.Yoke can only detect a direction at every turn, and detection efficiency is low.Crossed yoke belongs to resultant magnetization (multidirectional magnetization), and it is to utilize two-phase or multiphase magnetic field mutual superposition and the resultant magnetic field that forms is carried out magnetized to workpiece.Crossed yoke can form rotating magnetic field.Its four magnetic poles are on same plane, and it is excitatory to have the sinusoidal alternating current of certain phase differential mutually by two respectively.So just can form the resultant magnetic field that is rotating that equates with the exciting curent frequency on plane, four magnetic pole places, detection efficiency is high.
Existing rotation yoke has four magnetic poles, and they divide two pairs, and it is a pair of to be in cornerwise two magnetic poles formation, the coil series connection in a pair of magnetic pole.Two pairs of magnetic pole current phase angles keep certain angle, and 90 or 120, form rotating magnetic field four magnetic pole geometric center point.But, outside four magnetic pole geometric center point, can not form effective detection magnetic field.
Still kettle still tooth root portion is easy to generate crackle, jeopardizes still kettle safety, and it is the effective means of finding crackle that magnetic detects.When still kettle still tooth root portion was detected, still kettle still odontoid was complicated, and detection faces is a plurality of detection faces not on same plane.Because existing rotation yoke has four magnetic poles, four magnetic poles are all on same plane, so can not use crossed yoke.
The existing detection method of still kettle still tooth is that yoke detects, and yoke can only detect a direction at every turn, and each still tooth needs seven detections to detect by four corner, and detection efficiency is low.
[utility model content]
The purpose of the utility model is the deficiency to prior art, and a kind of detection efficiency height is provided, and still kettle still tooth magnetic detects with rotating yoke with detecting more accurately.
For achieving the above object, the utility model adopts following technical scheme:
Still kettle still tooth magnetic detects with the rotation yoke, includes handle, fixed mount; Said handle is arranged on the fixed mount; The bottom that it is characterized in that said fixed mount vertically is provided with the many poles that form magnetic pole downwards, on every pole, is wound with coil, and the lower end of said pole is connected with adjuster bar.
Aforesaid still kettle still tooth magnetic detects with the rotation yoke, and the quantity that it is characterized in that said pole is four, the connection of contacting in twos of the coil on said four poles.
Aforesaid still kettle still tooth magnetic detects with the rotation yoke, and the syndeton that it is characterized in that said adjuster bar and pole is for being threaded.
The beneficial effect of the utility model has: 1, be connected with adjuster bar is adjustable through the pole with magnetic poles, the length of each magnetic pole can be adjusted, thereby adapt to the detection faces of differing heights, be convenient to detect at the still kettle still tooth of different model; 2, simple in structure, more in the manufacturing, help marketing and use.
[description of drawings]
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated;
Fig. 1 is the utility model synoptic diagram.
[embodiment]
As shown in the figure, a kind of still kettle still tooth magnetic of the utility model indication detects with the rotation yoke, includes handle 1; Fixed mount 2; Said handle 1 is arranged on the fixed mount 2, and the bottom of said fixed mount 2 vertically is provided with the many poles 3 that form magnetic pole downwards, on every pole 3, is wound with coil 4; And being provided with adjuster bar 5 in the end of coil 4, said adjuster bar 5 can extend being connected with pole 3 of adjusting downwards.
The utility model preferred embodiment is: the quantity of said pole 3 is four, the connection of contacting in twos of the coil 4 on said four poles 3.The syndeton of said adjuster bar 5 and pole 3 is for being threaded.
In the present embodiment; Pole 3 is as magnetic pole; And on magnetic pole, all have independently coil, and make each magnetic pole constitute a pair of single yoke with any one of other magnetic pole, each magnetic pole can be with controls such as contactor or controllable silicons; Through adopting different control methods, form rotating magnetic field, unidirectional magnetic field and vertical magnetic field.
The utility model passes through the many poles 3 of setting on fixed mount 2 as magnetic pole, and the adjuster bar 5 of adjustable length is set on many poles 3, the length of each magnetic pole can be adjusted, thereby adapt to the detection faces of differing heights.Be convenient to detect at the still kettle still tooth of different model.
Claims (3)
1. still kettle still tooth magnetic detects with the rotation yoke; Include handle (1); Fixed mount (2), said handle (1) is arranged on the fixed mount (2), it is characterized in that the bottom of said fixed mount (2) vertically is provided with the many poles (3) that form magnetic pole downwards; On every pole (3), be wound with coil (4), the lower end of said pole (3) is connected with adjuster bar (5).
2. still kettle still tooth magnetic according to claim 1 detects with the rotation yoke, and the quantity that it is characterized in that said pole (3) is four, the connection of contacting in twos of the coil (4) on said four poles (3).
3. still kettle still tooth magnetic according to claim 1 and 2 detects with the rotation yoke, and the syndeton that it is characterized in that said adjuster bar (5) and pole (3) is for being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200844158U CN202442994U (en) | 2012-03-07 | 2012-03-07 | Rotary magnetic yoke for magnetic powder detection of still kettle teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200844158U CN202442994U (en) | 2012-03-07 | 2012-03-07 | Rotary magnetic yoke for magnetic powder detection of still kettle teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442994U true CN202442994U (en) | 2012-09-19 |
Family
ID=46824438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200844158U Expired - Fee Related CN202442994U (en) | 2012-03-07 | 2012-03-07 | Rotary magnetic yoke for magnetic powder detection of still kettle teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202442994U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970584A (en) * | 2017-02-28 | 2017-07-21 | 徐州工程学院 | A kind of still kettle safety detection device and method |
| CN108918656A (en) * | 2018-09-07 | 2018-11-30 | 中国电建集团山东电力建设第工程有限公司 | A kind of T-type welding point detection intersection electromagnetic yoke |
-
2012
- 2012-03-07 CN CN2012200844158U patent/CN202442994U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970584A (en) * | 2017-02-28 | 2017-07-21 | 徐州工程学院 | A kind of still kettle safety detection device and method |
| CN106970584B (en) * | 2017-02-28 | 2019-06-18 | 徐州工程学院 | A kind of still kettle safety detection device and method |
| CN108918656A (en) * | 2018-09-07 | 2018-11-30 | 中国电建集团山东电力建设第工程有限公司 | A kind of T-type welding point detection intersection electromagnetic yoke |
| CN108918656B (en) * | 2018-09-07 | 2023-08-29 | 中国电建集团山东电力建设第一工程有限公司 | Cross electromagnetic yoke for detecting T-shaped welding joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20130307 |