CN103219128A - Through type permanent magnetizer and magnetic flux leakage testing probe formed by permanent magnetizer - Google Patents
Through type permanent magnetizer and magnetic flux leakage testing probe formed by permanent magnetizer Download PDFInfo
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- CN103219128A CN103219128A CN2013100892057A CN201310089205A CN103219128A CN 103219128 A CN103219128 A CN 103219128A CN 2013100892057 A CN2013100892057 A CN 2013100892057A CN 201310089205 A CN201310089205 A CN 201310089205A CN 103219128 A CN103219128 A CN 103219128A
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Abstract
The invention aims at providing a permanent magnetizer and a magnetic flux leakage testing probe formed by the permanent magnetizer. The permanent magnetizer comprises a first annular permanent magnet body, a second annular permanent magnet body and an annular armature, wherein the annular armature is clamped between the first annular permanent magnet body and the second annular permanent magnet body, and the annular armature, the first annular permanent magnet body and the second annular permanent magnet body are coaxial and are jointed to form a through type permanent magnetizer. The magnetic flux leakage testing probe formed by the through type permanent magnetizer further comprises a shoe-shaped probe which is arranged in an inner cavity of the armature coaxially and is detachably connected with the armature. The magnetic flux leakage testing probe disclosed by the invention integrates magnetization and signal output functions, has the advantages of small size, light weight, strong universality, low cost and the like, and can be suitable for the characteristics of components to be tested on the large swing amplitude and the high change speed; and the probe has a split structure, can also form a through type probe during operation, also has the effect close to the magnetization effect of a through type solenoid coil, and especially can realize the nondestructive testing requirements of non-end or two-end anchored components under the conditions of high speed and large swinging amplitude.
Description
Technical field
The invention belongs to the leakage field Dynamic Non-Destruction Measurement, particularly a kind of through mode permanent magnet magnetization device reaches by its Magnetic Flux Leakage Inspecting that constitutes probe.
Background technology
Magnetic pumping is one of primary key technology of Magnetic Flux Leakage Inspecting, for different detected objects and operating mode the different mode of magnetizations and structural requirement is often arranged.Permanent magnetic magnetizing device has that volume is little, unit magnetic energy product height, need not to provide advantages such as additional power supply to be widely used in portable leakage field non-destructive control probe.But existing permanent magnet magnetization Magnetic Flux Leakage Inspecting probe all is permanent magnetism yoke formula structures, each probe by a plurality of separately independently yoke assembly solidify and to constitute, each independently yoke assembly form by the magneto sensor between armature and the two poles of the earth encapsulation, wherein, the two ends magnetic pole of armature is in series by polylith magnet, and the centre is that span is usually greater than 150mm magnetic bridge road.Usually the two ends magnetic pole is also faced detected body to guarantee that magnetic circuit is unimpeded with lifting from for a short time apart from close of 1-5mm, also be that every group of yoke will be positioned as close to detected body, so, match mutually with relevant detection object Outside Dimensions by inner chamber by several detection probe of being built into of magnetic bridge road independently.Because the different size specification needs different detection probe, this detection probe does not possess versatility and interchangeability.In addition, the closely close of yoke magnetic pole also causes existing the magnetic effect excessive also in the face of detected body, makes detection probe when scanning with detected height speed mutual damage effect take place, and the while detection probe also is difficult for being separated from detected body.
Summary of the invention
The objective of the invention is to propose a kind of permanent magnet magnetization device and reach by its Magnetic Flux Leakage Inspecting that constitutes probe, the present invention has good versatility and interchangeability, can realize the detection of the detected object of different size.
A kind of permanent magnet magnetization device provided by the invention is characterized in that it comprises first, second annular permanent magnet, ring armature; Ring armature is clipped between first, second annular permanent magnet, the coaxial and formation one through mode permanent magnet magnetization device of fitting of three.As improvement of the technical scheme, the two ends of ring armature and first, second annular permanent magnet cooperation place are provided with bonding structure.
As further improvement in the technical proposal, first, second annular permanent magnet and ring armature constitute by two lobes or the activity of many lobes.
A kind of Magnetic Flux Leakage Inspecting probe that is made of above-mentioned through mode permanent magnet magnetization device provided by the invention is characterized in that it also comprises the spy boots, visits the inner chamber of boots coaxial arrangement at armature, with detachable connection the between the armature.
Described spy boots can be made up of skeleton and magneto sensor, and skeleton is a ring-type, and its outer surface has a circle groove, and magneto sensor is evenly arranged in this groove.
Detection probe provided by the invention is used for reference the mode of magnetization of the little magnetic attraction effect of through mode solenoid coil magnetizer inner chamber, directly utilize through mode permanent magnet magnetization device that the detected body of the different size in chamber placed within is carried out axially local wholecircle week Overall magnetization, need not traditional a plurality of independent magnetic bridge road assembly.Be equipped with to go up the annular that is made of magneto sensor of different size again and visit the boots unit, a shared through mode permanent magnet magnetization device just can be realized the detection of the detected object of different size.
Integrated magnetization of detection probe provided by the invention and signal output function have that volume is little, in light weight, an advantage such as highly versatile, cost are low, can adapt to some characteristic that member amplitude of fluctuation to be detected is big, velocity variations is fast.This probe is split type structure, but can form the form of through mode probe in the course of work again, and have near the magnetized effect of through mode solenoid coil, can realize especially finishing members such as Endless or two ends anchoring at a high speed, put on the Non-Destructive Testing demand under the condition emotionally.
Description of drawings
Fig. 1 is the structural representation of through mode permanent magnet magnetization device;
Fig. 2 is that through mode permanent magnet magnetization device Magnetic Flux Leakage Inspecting probe 1/4 is analysed and observe a geodesic structure schematic diagram;
Fig. 3 is that through mode permanent magnet magnetization device Magnetic Flux Leakage Inspecting probe is changed spy boots technology mode fast;
Fig. 4 is the subdivision version that through mode permanent magnet magnetization device Magnetic Flux Leakage Inspecting probe adapts to elongated Endless;
Fig. 5 a is a through mode permanent magnet magnetization device Magnetic Flux Leakage Inspecting probe wholecircle week magnetization fundamental diagram;
Fig. 5 b is a through mode permanent magnet magnetization device Magnetic Flux Leakage Inspecting probe wholecircle week magnetization work design sketch.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.Need to prove at this, be used for helping to understand the present invention for the explanation of these execution modes, but do not constitute limitation of the invention.In addition, below in each execution mode of described the present invention involved technical characterictic just can not make up mutually as long as constitute conflict each other.
As shown in Figure 1, the magnetizer that example of the present invention provides comprises first, second annular permanent magnet 1,3, ring armature 2.
The Magnetic Flux Leakage Inspecting probe that example of the present invention provides comprises magnetizer and visits boots 6.It is identical with ordinary probe to visit boots 6 principles, shown in Fig. 2,3, is made up of skeleton 4 and magneto sensor 5, and skeleton 4 is a ring-type, and its outer surface has a circle groove, and magneto sensor 5 (Hall element or induction coil etc.) is evenly arranged in this groove.
Visit the inner chamber of boots 6 coaxial arrangement, be connected with armature 2, and can carry out directly changing fast according to the spy boots of detected object overall dimension making different size by screw at armature 2.The present invention uses for reference the magnetized characteristics of through mode loop coil, directly adopt annular permanent magnet 1,3 and armature 2 formed structures as magnetizer, the detected body 7 that is positioned over the magnetizer inner chamber is carried out axially local wholecircle week Overall magnetization, the magnetizer inner chamber is placed the spy boots 6 that formed by skeleton 4 and magneto sensor 5, can realize that measuring ability constitutes.This probe magnetizer magnetic force is little, and can be general, only needs to change fast the quick detection that built-in spy boots 6 can be realized the detected body 7 of different size.
What Fig. 2 showed is that through mode permanent magnet magnetization device Magnetic Flux Leakage Inspecting probe is changed spy boots technology mode fast, and shared same magnetizer can be changed the inner chamber of different size and visit boots 6 fast according to the overall dimension of the detected body 7 of different size.
What Fig. 4 showed is the subdivision version that through mode permanent magnet magnetization device Magnetic Flux Leakage Inspecting probe adapts to elongated Endless.Through mode permanent magnet magnetization device can be split into two lobes or many lobes in the engineering, form a plurality of subdivision assemblies, for example in the two lobe split type structures shown in the figure, just comprise upper permanent magnet 1u, 3u, upper armature 2u, the upper boots 6u that visits, following half of permanent magnet 1d, 3d, second side armature 2d, the following half of boots 6d that visits, the each several part assembly can also be combined by hinge or other connected modes simultaneously, form complete through mode Magnetic Flux Leakage Inspecting probe, make detected body 7 to get on to finish detection by cutting ferrule.
Shown in Fig. 5 a, the principle of the invention is to use for reference the Magnitizing method of feed-through coil, adopt annular permanent magnet 1,3 and armature 2 formed structures as magnetizer, the detected body 7 of placing its inner chamber is implemented axially local wholecircle week Overall magnetization, after inspiring the defect magnetic flux leakage field of detected body, picked up with visiting boots 6.
Fig. 5 b is through mode permanent magnet magnetization device Magnetic Flux Leakage Inspecting probe wholecircle week magnetization work design sketch, and is identical with feed-through coil magnetization effect.
The above is preferred embodiment of the present invention, but the present invention should not be confined to the disclosed content of this embodiment and accompanying drawing.So everyly do not break away from the equivalence of finishing under the spirit disclosed in this invention or revise, all fall into the scope of protection of the invention.
Claims (6)
1. a permanent magnet magnetization device is characterized in that, it comprises first, second annular permanent magnet, ring armature; Ring armature is clipped between first, second annular permanent magnet, the coaxial and formation through mode permanent magnet magnetization device of fitting of three.
2. through mode permanent magnet magnetization device according to claim 1 is characterized in that, the two ends of ring armature and first, second annular permanent magnet cooperation place are provided with bonding structure.
3. through mode permanent magnet magnetization device according to claim 1 is characterized in that first, second annular permanent magnet and ring armature constitute by two lobes or the activity of many lobes.
4. permanent magnet magnetization device according to claim 2 is characterized in that, first, second annular permanent magnet and ring armature constitute by two lobes or the activity of many lobes.
5. a Magnetic Flux Leakage Inspecting probe that is made of arbitrary described through mode permanent magnet magnetization device in the claim 1 to 4 is characterized in that it also comprises the spy boots, visits the inner chamber of boots coaxial arrangement at armature, with detachable connection the between the armature.
6. Magnetic Flux Leakage Inspecting probe according to claim 5 is characterized in that described spy boots are made up of skeleton and magneto sensor, and skeleton is a ring-type, and its outer surface has a circle groove, and magneto sensor is evenly arranged in this groove.
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| CN201310089205.7A CN103219128B (en) | 2013-03-20 | 2013-03-20 | Through type permanent magnetizer and magnetic flux leakage testing probe formed by permanent magnetizer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698389A (en) * | 2014-01-15 | 2014-04-02 | 爱德森（厦门）电子有限公司 | Design method for enabling detected part to run along externally-penetrated probe central axis all time |
| CN104280452A (en) * | 2014-09-30 | 2015-01-14 | 北京工业大学 | Wire rope defect scanning system based on circular array weak magnetic detection sensor |
| CN105572221A (en) * | 2016-02-22 | 2016-05-11 | 四川大学 | Passing through type steel pipe magnetic leakage detection air flotation detection boot |
| CN106092383A (en) * | 2016-06-23 | 2016-11-09 | 南昌航空大学 | Magnetic bullet cable force measurement method and restructural magnetic-elastic stress sensor thereof |
| CN106645385A (en) * | 2016-09-23 | 2017-05-10 | 中国石油大学(华东) | Petroleum string defect fast detecting probe based on Helmholtz coils |
| CN107941901A (en) * | 2018-01-19 | 2018-04-20 | 沈阳工业大学 | A kind of High Speed Magnetic Flux Leakage detecting system based on magnetic saturation structure step by step |
| 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 |
| CN108956755A (en) * | 2018-05-31 | 2018-12-07 | 东北石油大学 | Detection device and series-parallel detection method in minor diameter spiral heat exchange tube leakage field |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698389A (en) * | 2014-01-15 | 2014-04-02 | 爱德森（厦门）电子有限公司 | Design method for enabling detected part to run along externally-penetrated probe central axis all time |
| CN103698389B (en) * | 2014-01-15 | 2016-04-20 | 爱德森（厦门）电子有限公司 | A kind of make detected pieces all the time along externally wearing type probe axis run method |
| CN104280452A (en) * | 2014-09-30 | 2015-01-14 | 北京工业大学 | Wire rope defect scanning system based on circular array weak magnetic detection sensor |
| CN104280452B (en) * | 2014-09-30 | 2017-05-24 | 北京工业大学 | Wire rope defect scanning system based on circular array weak magnetic detection sensor |
| CN105572221A (en) * | 2016-02-22 | 2016-05-11 | 四川大学 | Passing through type steel pipe magnetic leakage detection air flotation detection boot |
| CN106092383A (en) * | 2016-06-23 | 2016-11-09 | 南昌航空大学 | Magnetic bullet cable force measurement method and restructural magnetic-elastic stress sensor thereof |
| CN106645385A (en) * | 2016-09-23 | 2017-05-10 | 中国石油大学(华东) | Petroleum string defect fast detecting probe based on Helmholtz coils |
| CN107941901A (en) * | 2018-01-19 | 2018-04-20 | 沈阳工业大学 | A kind of High Speed Magnetic Flux Leakage detecting system based on magnetic saturation structure step by step |
| CN107941901B (en) * | 2018-01-19 | 2024-03-01 | 沈阳工业大学 | High-speed magnetic flux leakage detection system based on step-by-step magnetic saturation structure |
| 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 |
| CN108956755A (en) * | 2018-05-31 | 2018-12-07 | 东北石油大学 | Detection device and series-parallel detection method in minor diameter spiral heat exchange tube leakage field |
| CN108956755B (en) * | 2018-05-31 | 2019-07-05 | 东北石油大学 | Detection device and series-parallel detection method in minor diameter spiral heat exchange tube leakage field |
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| CN103219128B (en) | 2015-07-01 |
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