CN2490583Y - Portable multichannel magnetic leakage material deflectoscope - Google Patents
Portable multichannel magnetic leakage material deflectoscope Download PDFInfo
- Publication number
- CN2490583Y CN2490583Y CN 01233127 CN01233127U CN2490583Y CN 2490583 Y CN2490583 Y CN 2490583Y CN 01233127 CN01233127 CN 01233127 CN 01233127 U CN01233127 U CN 01233127U CN 2490583 Y CN2490583 Y CN 2490583Y
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- fixed
- wedge
- cabinet
- crossbeam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
本实用新型涉及一种多通道便携式漏磁材料缺陷检测仪,包括隔板、永磁体、楔形块和多通道探头等,隔板固定在机箱的中部,永磁体固定在隔板中央的下部,多通道探头与永磁体相对固定;楔形块对称地插在永磁体两侧的磁轭中。本实用新型设计的检测仪,采用高性能永磁体作磁化源,并通过导磁极靴及被检工件形成闭合磁路,增强磁化效果,多个沿垂直于检测面方向布置的多通道探头检测水平方向漏磁通的变化,可以发现变化缓慢的大的腐蚀坑缺陷。
The utility model relates to a multi-channel portable magnetic flux leakage material defect detector, which comprises a partition, a permanent magnet, a wedge-shaped block and a multi-channel probe, etc., the partition is fixed in the middle of the cabinet, and the permanent magnet is fixed in the lower part of the center of the partition. The channel probe is fixed relative to the permanent magnet; the wedge blocks are symmetrically inserted into the yokes on both sides of the permanent magnet. The detector designed by the utility model adopts a high-performance permanent magnet as the magnetization source, and forms a closed magnetic circuit through the magnetically conductive pole piece and the workpiece to be inspected to enhance the magnetization effect. Large corrosion pit defects that change slowly can be found by changing the direction of leakage flux.
Description
Technical field:
The utility model relates to a kind of multi-channel portable leakage field fault in material detector, belongs to the fault in material Non-Destructive Testing
Technical field.
Background technology:
In the prior art, application number is 95212309 patented product steel pipe magnetic flux leakage testing device, adopt the dc magnetization mode, set upright clamp system, circumferential defect testing agency and axial flaw testing agency, and devices such as control desk, testing circuit and warning, demonstration, marking are formed by front and back two.Set upright before the steel pipe of advancing passes the rotating magnetic field of the fixed magnetic field of V-arrangement up and down wheel, circumferential defect testing agency of clamp system and hyperchannel probe, axial flaw testing agency and hyperchannel probe, after set upright the wheel of V-arrangement up and down of clamp system.Upwards distribute in detected week or axially go up promptly report to the police after the defective that distributes, demonstration, marking.
The innovation and creation content:
The purpose of this utility model is actual a kind of multi-channel portable leakage field fault in material detector, adopts high-performance permanent magnet to make source of magnetization, and forms closed magnetic circuit by magnetic conductive pole piece and tested workpiece, strengthens the magnetization effect, reduces the overall system power consumption simultaneously.
The multi-channel portable leakage field fault in material detector of the utility model design comprises crossbeam, column, cam, dividing plate, permanent magnet, wedge, yoke, magnetic pole piece and hyperchannel probe.Dividing plate is fixed on the middle part of cabinet; Permanent magnet is fixed on the bottom of dividing plate central authorities, hyperchannel probe and permanent magnet relative fixed; Two yokes and two symmetrical respectively both sides that are placed on permanent magnet of magnetic pole piece, and be fixed on mould dividing plate and the cabinet.Wedge is inserted in the yoke of permanent magnet both sides symmetrically, an end relative fixed of wedge and column, and the other end of column is fixed on the crossbeam, and the two ends of crossbeam are inserted in the guide groove of cabinet two side, and crossbeam central authorities are provided with concave point, and this concave point and cam meshing close.
The multi-channel portable leakage field fault in material detector of the utility model design adopts high-performance permanent magnet to make source of magnetization, and forms closed magnetic circuit by magnetic conductive pole piece and tested workpiece, strengthens the magnetization effect, reduces the overall system power consumption simultaneously; Two wedges and the corresponding connecting rod structure can disconnect easily, closed magnetic circuit are convenient to detector and are lifted from workpiece; Adopt battery as power supply; Detect steel pipe inside and outside wall defective or corrosion simultaneously; Can reach 16 hyperchannel probes of arranging along the detection faces direction and be used for detection of vertical in the detection faces stray field, hyperchannel can be formed the influence of mode to avoid environmental magnetic field to disturb of differential amplification; Big slowly etch pit defective can be found to change perpendicular to the variation of the hyperchannel probe detection level direction leakage flux of detection faces direction layout in a plurality of edges.
Description of drawings:
Fig. 1 is the structural representation of the detector of the utility model design.
Fig. 2 is an outer wall groove flaw indication oscillogram.
Fig. 3 is an inner wall groove flaw indication oscillogram.
Fig. 4 is the defective hole signal waveforms.
Among Fig. 1, the 1st, guide groove, the 2nd, crossbeam, the 3rd, column, the 4th, cam, the 5th, cabinet, the 6th, attachment screw, the 7th, cabinet dividing plate, the 8th, yoke, the 9th, magnetic pole piece, the 10th, wedge, the 11st, hyperchannel probe, the 12nd, permanent magnet, the 13rd, tested workpiece.
Embodiment:
As shown in Figure 1, the multi-channel portable leakage field fault in material detector of the utility model design comprises crossbeam 2, column 3, cam 4, dividing plate 7, permanent magnet 12, wedge 10, yoke 8, magnetic pole piece 9 and hyperchannel probe 11.Dividing plate 7 is fixed on the middle part of cabinet 5; Permanent magnet 12 is fixed on the bottom of dividing plate 7 central authorities, hyperchannel probe 11 and permanent magnet 12 relative fixed.Two yokes 8 and two symmetrical respectively both sides that are placed on permanent magnet 12 of magnetic pole piece 9, and be fixed on mould dividing plate 7 and the cabinet 5.Wedge 10 is inserted in the yoke 8 of permanent magnet 12 both sides symmetrically, one end relative fixed of wedge 10 and column 3, the other end of column 3 is fixed on the crossbeam 2, and the two ends of crossbeam are inserted in the guide groove 1 of cabinet two side, crossbeam central authorities are provided with concave point, and this concave point is meshed with cam 4.
The leakage field fault in material detector of the utility model design, the central authorities that adopt a permanent magnet to be placed on magnetic circuit carry out local magnetized to workpiece, two yokes (containing wedge) that permanent magnet, symmetry are placed and two magnetic pole pieces form half " mouth " font, detected workpiece is placed on below two magnetic pole pieces, thereby forms the magnetic circuit of a closure.Whole magnetizable body is installed in the Lower Half of cabinet, detects the centre position that is installed in the cabinet Lower Half with the hyperchannel probe.Near on the yoke on permanent magnet both sides a wedge is being arranged respectively, wedge is by column and the crossbeam interlock that is positioned at the cabinet first half, there is a cam top in the middle of the crossbeam, and rotating cam can drive crossbeam and column moves up and down wedge, thereby finishes the closure and the disconnection of magnetic circuit.
The detector course of work is: open the detector power switch, system powers on.Detector is put on the workpiece, and rotating cam makes the magnetic circuit closure.Along surface of the work move detector (translational speed＜2m/s), when dangerous defective, detector sends alerting signal, and on LCDs the display defect waveform.When having detected a workpiece, need transfer to when detecting on another workpiece, disconnect magnetic circuit and can carry out the transfer of workpiece easily.Effect:
By adopting high-performance permanent magnet to make source of magnetization, adopt Low-power Technology and lcd technology, adopt battery as power supply, succeed in developing a kind of portable Magnetic Flux Leakage Inspecting instrument.Detector can detect steel pipe inside and outside wall defective or corrosion simultaneously by a scanning, and port number can reach 16.Accompanying drawing 2,3,4 is respectively steel pipe (wall thickness 5mm, diameter 55mm) outer wall groove defective (groove width 0.5mm, dark 0.2mm), the signal waveform of inner wall groove defective (groove width 0.5mm, dark 0.2mm) and hole defect (diameter is the through hole of 0.5mm).Detector is surveyed the magnetic precision can reach 0.1Ga, and the hyperchannel probe that along continuous straight runs is arranged can find to change big slowly etch pit.
Claims (1)
1, a kind of multi-channel portable leakage field fault in material detector is characterized in that, this detector comprises crossbeam, column, cam, dividing plate, permanent magnet, wedge, yoke, magnetic pole piece and hyperchannel probe; Described dividing plate is fixed on the middle part of cabinet; Described permanent magnet is fixed on the bottom of dividing plate central authorities, hyperchannel probe and permanent magnet relative fixed; Two yokes and two symmetrical respectively both sides that are placed on permanent magnet of magnetic pole piece, and be fixed on mould dividing plate and the cabinet; Described wedge is inserted in the yoke of permanent magnet both sides symmetrically, one end relative fixed of wedge and column, the other end of column is fixed on the crossbeam, and the two ends of crossbeam are inserted in the guide groove of cabinet two side, crossbeam central authorities are provided with concave point, and this concave point and cam meshing close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233127 CN2490583Y (en) | 2001-08-10 | 2001-08-10 | Portable multichannel magnetic leakage material deflectoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233127 CN2490583Y (en) | 2001-08-10 | 2001-08-10 | Portable multichannel magnetic leakage material deflectoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2490583Y true CN2490583Y (en) | 2002-05-08 |
Family
ID=33647041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01233127 Expired - Fee Related CN2490583Y (en) | 2001-08-10 | 2001-08-10 | Portable multichannel magnetic leakage material deflectoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2490583Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1985164B (en) * | 2004-07-16 | 2010-10-20 | V&M德国有限公司 | Method and device for inspecting pipelines without damage |
| CN110220969A (en) * | 2019-06-28 | 2019-09-10 | 苏州大学 | A kind of magnetic leakage detecting probe with high sensitivity |
| CN110487889A (en) * | 2019-08-30 | 2019-11-22 | 中国计量大学 | Monitor the electromagnetic sensor and monitoring method of elevator traction steel band state |
-
2001
- 2001-08-10 CN CN 01233127 patent/CN2490583Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1985164B (en) * | 2004-07-16 | 2010-10-20 | V&M德国有限公司 | Method and device for inspecting pipelines without damage |
| CN110220969A (en) * | 2019-06-28 | 2019-09-10 | 苏州大学 | A kind of magnetic leakage detecting probe with high sensitivity |
| CN110220969B (en) * | 2019-06-28 | 2024-04-12 | 苏州大学 | Magnetic flux leakage detection probe with high sensitivity |
| CN110487889A (en) * | 2019-08-30 | 2019-11-22 | 中国计量大学 | Monitor the electromagnetic sensor and monitoring method of elevator traction steel band state |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101358688B (en) | Magnetic leakage detector out of diameter-variable pipe driven by DC generator | |
| CN201859139U (en) | Magnetic leakage detection magnetizer for storage tank soleplate based on excitation of direct current coil | |
| CA2226631A1 (en) | Method and device for magnetically testing products with a wall comprising at least one layer of magnetic material | |
| CN101576533A (en) | Portable eddy-current crack detector for detecting steel rail | |
| CN1865976A (en) | Large-area steel plate defect flux-leakage detection method | |
| CN2490583Y (en) | Portable multichannel magnetic leakage material deflectoscope | |
| CN108663432A (en) | Device for detecting tiny defects of pipeline and method for detecting centers and diameters of defects | |
| Liu et al. | In-pipe detection system based on magnetic flux leakage and eddy current detection | |
| CN105546359A (en) | Convenient online constant magnetic detection device for pressure-bearing industrial pipeline | |
| CN108287180B (en) | Magnetorheological fluid sedimentation detection device simulating actual working conditions | |
| CN110133097A (en) | A kind of buried pipeline circumference weld inspection device and detection method | |
| CN206161588U (en) | Oil pipe electromagnetism combination formula magnetic flux leakage detection device | |
| CN201021911Y (en) | A multi-channel electromagnetic acid leakage alarming instrument | |
| CN205372090U (en) | Online permanent magnetism detection device of portable pressure -bearing industrial pipeline | |
| CN203616284U (en) | Screw propulsion type magnetic powder inspection device | |
| CN2434676Y (en) | Leakage crack detecting machine | |
| CN211787796U (en) | Magnet black box experimental device | |
| CN2886566Y (en) | Detector for non-destructive examination of well mouth oil pipe | |
| CN112326781A (en) | Bearing needle magnetic leakage detection device | |
| CN114910664B (en) | A magnetic liquid acceleration sensor | |
| CN217717612U (en) | In-plane bidirectional high-precision eddy current nondestructive flaw detection device | |
| JP2005106602A (en) | Magnetic flaw detection sensor | |
| CN221977129U (en) | A soil disease detection device around underground pipe network | |
| JPS5730943A (en) | Detecting method for defect in ferromagnetic material | |
| CN213875531U (en) | Magnetic leakage corrosion detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |