CN105806929A - Ferromagnetic thin-walled tube circumferential AC magnetization magnetic flux leakage detection array probe - Google Patents
Ferromagnetic thin-walled tube circumferential AC magnetization magnetic flux leakage detection array probe Download PDFInfo
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- CN105806929A CN105806929A CN201410848804.7A CN201410848804A CN105806929A CN 105806929 A CN105806929 A CN 105806929A CN 201410848804 A CN201410848804 A CN 201410848804A CN 105806929 A CN105806929 A CN 105806929A
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Abstract
The invention belongs to the technical field of nuclear power station ferromagnetic thin-walled tube inward-passing electromagnetic nondestructive test and other ferromagnetic thin-walled tube electromagnetic nondestructive test and relates to a ferromagnetic thin-walled tube circumferential AC magnetization magnetic flux leakage detection array probe. The array probe comprises two rows of giant magneto resistive sensors and excitation coils uniformly distributed along a pipe circumferential direction, in each row, the giant magneto resistive sensors and excitation coils are arranged at intervals and the giant magneto resistive sensors and excitation coils in the two rows are staggered. When a pipe is detected, the two adjacent excitation coils in the first row of the coils are excited, then other excitation coils in the first row are orderly excited, after all the coils in the single row are excited, the two excitation coils in the second row close to the excitation coils in the first row are excited and then other excitation coils in the second row are orderly excited. The array probe realizes detection of small caliber sample pipe axial defects.
Description
Technical field
The invention belongs to the electromagnetic nondestructive testing field of the electromagnetic nondestructive of nuclear power station ferromagnetism thin pipe wall interior crossing type and other ferromagnetism thin pipe wall, be specifically related to the array probe of a kind of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting.
Background technology
Nuclear power station ferromagnetic tubes electromechanical detection method present stage mainly adopts far-field eddy.Far-field eddy has certain sensitivity and resolving power for the detection of defect, but owing to adopting the magnetic saturation mode of permanent magnet, its intensity of magnetization can not regulate, may result in the intensity of magnetization inadequate, so that detection signal is produced interference by the residual magnetic field of ferromagnetic tubes, the mode of magnetization that additionally far-field eddy adopts is more adopt axial excitation, and namely permanent magnet N-S pole is placed along pipe axle, this kind of modes of emplacement is more sensitive for the detection of circumferential defect, it can be difficult to check axial flaw.
Magnetic Flux Leakage Inspecting technology is the Automatic Measurement Technique of a kind of stray field detecting ferromagnetic tubes derived from magnetic powder technology.The leakage field caused by defect, by ferromagnetic tubes is magnetized, is detected, thus reaching the qualitative and quantitative judgement to defect by the method.The detection mode for pipeline circumferential defect (axial magnetized) of stray field is similar to far-field eddy；But the permanent magnet N-S pole built-in modes of emplacement vertical with pipe axle is then adopted for the detection of axial flaw (circumferential magnetization), and permanent magnet is rotated with pipe axle for center of rotation so that whole pipeline carries out circumferential magnetization, owing to the direction in now magnetic field is along tube wall direction, therefore more sensitive for axial flaw.There is a lot of bend pipes in the pipeline of nuclear power station, machinery rotates the difficulty in the noise brought and control so that it not is best for adopting the mode that machinery rotates.
Summary of the invention
It is an object of the invention to provide the array probe of a kind of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting, to realize the detection of the axial flaw to pipe with small pipe diameter sample pipe.
For reaching above-mentioned purpose, the technical solution used in the present invention is:
The array probe of a kind of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting, including two row giant magneto-resistance sensor and the magnet exciting coils uniform along tubing circumference；Often in row, giant magneto-resistance sensor and magnet exciting coil interval are arranged, giant magneto-resistance sensor in two rows and magnet exciting coil interlaced arrangement.
Described magnet exciting coil is that axle is around formula coil.
When carrying out the detection of pipeline, first two magnet exciting coils adjacent on first row coil are excited, realize the exciting successively of other magnet exciting coil of this winding displacement circle again, after sequential has covered this single-row winding, excite two close with front row the magnet exciting coil of second row coil, then realize the exciting successively of other magnet exciting coil of this winding displacement circle.
Having the beneficial effect that acquired by the present invention
The present invention replaces the mode of machinery rotation to realize the circumferential magnetization of pipeline in the way of rotary electronic, adopt giant reluctivity device as detection sensor, realize probe axial flaw is detected, reduce probe machinery and rotate the impact on flaw detection sensitivity, enhance the capacity of resisting disturbance of probe, being coil magnetizing due to what adopt, based on the restriction of power, the probe of this kind of structure is applicable to the built-in detection of thin pipe wall pipe with small pipe diameter light-wall pipe.
(1) by adopting solenoid to excite magnetic field magnetization ferromagnetic tubes, change the original permanent magnet situation as source of magnetization, adopt the mode of this local magnetized, improve the magnetic field homogeneity in region, magnetic field intensity can be regulated additionally by electric magnet, therefore corresponding stray field intensity also can change therewith, than permanent magnet advantages；
(2) adopt the circumferential magnetization mode of rotary electronic, decrease machinery and rotate the noise jamming brought and control difficulty, on magnetizing velocity, want fast than what machinery rotated simultaneously；
(3) for circumference Energizing unit, coil on single-row and the staggered pattern of sensor ensure that the detection of the stray field of defect, and two arrange staggered modes then achieves the covering of magnetizing field of whole circumference tube wall and the detection of whole circumference tube wall axial flaw；
(4) coil can generate heat in long detection process, and according to Coil Detector, the signal to noise ratio of detecting signal can be heavily disturbed, and giant magneto-resistance sensor has the good effect suppressing temperature drift, it is ensured that the good signal-to noise ratio of defects detection.
Accompanying drawing explanation
Fig. 1 is the array probe structure chart I of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting of the present invention；
Fig. 2 is the array probe structure chart II of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting of the present invention；
Fig. 3 is the distribution characteristics schematic diagram of magnetic leakage detecting probe circumference exciting field；
Fig. 4 is A-A-first row coil magnetic field distribution characteristics schematic diagram；
Fig. 5 is B-B-second row coil magnetic field distribution characteristics schematic diagram；
In figure: 1, giant magneto-resistance sensor；2, magnet exciting coil.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Fig. 1 Fig. 5, the array probe of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting of the present invention includes along uniform two row's giant magneto-resistance sensor 1 and the magnet exciting coils 2 of tubing circumference；Often in row, giant magneto-resistance sensor 1 and magnet exciting coil 2 interval are arranged, giant magneto-resistance sensor 1 in two rows and magnet exciting coil 2 interlaced arrangement.Magnet exciting coil 2 is that axle is around formula coil.
When carrying out the detection of pipeline, first two magnet exciting coils 2 adjacent on first row coil are excited, realize the exciting successively of other magnet exciting coil 2 of this winding displacement circle again, (excite clockwise or excite counterclockwise) after sequential has covered this single-row winding, excite two close with front row magnet exciting coil 2 (excite clockwise or excite counterclockwise) of second row coil, then realize the exciting successively of other magnet exciting coil 2 of this winding displacement circle.Can be combined with sample rate in detection process, probe feeds back, along the position of axle movement velocity and encoder, the sequential shooting parameter regulating circumferential magnetization.
Claims (3)
1. the array probe of a ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting, it is characterised in that: include along uniform two row's giant magneto-resistance sensor (1) and the magnet exciting coils (2) of tubing circumference；Often in row, giant magneto-resistance sensor (1) and magnet exciting coil (2) interval are arranged, two arrange in giant magneto-resistance sensor (1) and magnet exciting coil (2) interlaced arrangement.
2. the array probe of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting according to claim 1, it is characterised in that: described magnet exciting coil (2) for axle around formula coil.
3. the array probe of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting according to claim 1, it is characterized in that: when carrying out the detection of pipeline, first two magnet exciting coils (2) adjacent on first row coil are excited, realize the exciting successively of other magnet exciting coil (2) of this winding displacement circle again, after sequential has covered this single-row winding, excite two close with front row magnet exciting coil (2) of second row coil, then realize the exciting successively of other magnet exciting coil (2) of this winding displacement circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848804.7A CN105806929A (en) | 2014-12-30 | 2014-12-30 | Ferromagnetic thin-walled tube circumferential AC magnetization magnetic flux leakage detection array probe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410848804.7A CN105806929A (en) | 2014-12-30 | 2014-12-30 | Ferromagnetic thin-walled tube circumferential AC magnetization magnetic flux leakage detection array probe |
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| CN105806929A true CN105806929A (en) | 2016-07-27 |
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| CN201410848804.7A Pending CN105806929A (en) | 2014-12-30 | 2014-12-30 | Ferromagnetic thin-walled tube circumferential AC magnetization magnetic flux leakage detection array probe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110140049A (en) * | 2017-01-03 | 2019-08-16 | 韩国水力原子力株式会社 | Eddy current array probe with insulation transceiver unit and use its eddy current inspection method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4808924A (en) * | 1987-02-19 | 1989-02-28 | Atomic Energy Of Canada Limited | Circumferentially compensating eddy current probe with alternately polarized transmit coils and receiver coils |
| JPH07294490A (en) * | 1994-04-27 | 1995-11-10 | Sumitomo Metal Ind Ltd | Magnetic flaw detection method excellent in oblique flaw detecting performance |
| JPH08201347A (en) * | 1995-01-25 | 1996-08-09 | Nuclear Fuel Ind Ltd | Tube flaw detecting device |
| JP2007064907A (en) * | 2005-09-02 | 2007-03-15 | Jfe Steel Kk | Magnetic flux leakage flaw detection apparatus |
| CN101446568A (en) * | 2008-11-20 | 2009-06-03 | 华中科技大学 | Steel pipe cross magnetization leakage magnetic detection device |
| CN101802603A (en) * | 2007-09-20 | 2010-08-11 | 原子力工程股份有限公司 | Eddy-current flaw detecting method, eddy-current flaw detecting device, and eddy-current flaw detecting probe |
| CN103760222A (en) * | 2014-01-18 | 2014-04-30 | 中国矿业大学 | Mining steel wire rope online detection device and method based on giant magnetoresistance sensor array |
| US20140312891A1 (en) * | 2013-04-19 | 2014-10-23 | Zetec, Inc. | Eddy Current Inspection Probe Based on Magnetoresistive Sensors |
| CN204302227U (en) * | 2014-12-30 | 2015-04-29 | 中核武汉核电运行技术股份有限公司 | A kind of array probe of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting |
-
2014
- 2014-12-30 CN CN201410848804.7A patent/CN105806929A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4808924A (en) * | 1987-02-19 | 1989-02-28 | Atomic Energy Of Canada Limited | Circumferentially compensating eddy current probe with alternately polarized transmit coils and receiver coils |
| JPH07294490A (en) * | 1994-04-27 | 1995-11-10 | Sumitomo Metal Ind Ltd | Magnetic flaw detection method excellent in oblique flaw detecting performance |
| JPH08201347A (en) * | 1995-01-25 | 1996-08-09 | Nuclear Fuel Ind Ltd | Tube flaw detecting device |
| JP2007064907A (en) * | 2005-09-02 | 2007-03-15 | Jfe Steel Kk | Magnetic flux leakage flaw detection apparatus |
| CN101802603A (en) * | 2007-09-20 | 2010-08-11 | 原子力工程股份有限公司 | Eddy-current flaw detecting method, eddy-current flaw detecting device, and eddy-current flaw detecting probe |
| CN101446568A (en) * | 2008-11-20 | 2009-06-03 | 华中科技大学 | Steel pipe cross magnetization leakage magnetic detection device |
| US20140312891A1 (en) * | 2013-04-19 | 2014-10-23 | Zetec, Inc. | Eddy Current Inspection Probe Based on Magnetoresistive Sensors |
| CN103760222A (en) * | 2014-01-18 | 2014-04-30 | 中国矿业大学 | Mining steel wire rope online detection device and method based on giant magnetoresistance sensor array |
| CN204302227U (en) * | 2014-12-30 | 2015-04-29 | 中核武汉核电运行技术股份有限公司 | A kind of array probe of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting |
Non-Patent Citations (1)
| Title |
|---|
| 徐可北 等: "阵列涡流检测技术", 《2006年第二届七省区市机械工程学会科技论坛暨学会改革与发展研讨会论文集》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110140049A (en) * | 2017-01-03 | 2019-08-16 | 韩国水力原子力株式会社 | Eddy current array probe with insulation transceiver unit and use its eddy current inspection method |
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Application publication date: 20160727 |
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