CN105445364A - Special conformal array eddy current testing device and method for turnout - Google Patents
Special conformal array eddy current testing device and method for turnout Download PDFInfo
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- CN105445364A CN105445364A CN201511014390.9A CN201511014390A CN105445364A CN 105445364 A CN105445364 A CN 105445364A CN 201511014390 A CN201511014390 A CN 201511014390A CN 105445364 A CN105445364 A CN 105445364A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9013—Arrangements for scanning
- G01N27/902—Arrangements for scanning by moving the sensors
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Abstract
The invention discloses a special conformal array eddy current testing device and method for turnout. A unique conformal array eddy current testing device is designed, interference of roughness of a turnout rail surface and probe lift-off to signals is effectively inhibited, testing limitation of turnout surface cracks in different directions is overcome, the testing accuracy and efficiency of the turnout surface and near-surface defects are improved, large-area scanning can be completed once, and imaging display of testing results is performed.
Description
Technical field
The present invention relates to a kind of the cannot-harm-detection device and method, particularly relate to the special conformal array eddy current testing device of a kind of track switch and method.
Background technology
High-speed railway switch surface imperfection, the especially surface imperfection of flange of rail foot position can cause the moment of rail to rupture, and cause huge hidden danger to safe railway operation.Therefore, study in-service track switch surface imperfection inspection technique and be conducive to reducing the security risks such as the driving accident that caused by track switch fractureing, have important practical significance.
High-speed railway switch comprises the parts such as tongue, stock rail, heart rail and wing rail, track switch xsect is continuous variable cross section, and when conventional vortex detection method detects, eddy current probe cannot form good laminating with track switch detection faces, the undesired signals such as easy generation is rocked, lift-off, cause undetected; On the other hand, track switch circumferential crack is a railway security Non-Destructive Testing difficult problem always, and the surface crack testing of conventional vortex detection method to track switch different directions exists limitation.
Therefore, have and need to suppress turnout rail surface roughness and probe lift-off to the interference of signal, overcome the surface crack testing limitation to track switch different directions, propose the special conformal array eddy current testing device of a kind of track switch and method, improve the precision and efficiency of detecting to track switch surface and near surface flaw.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art, the special conformal array eddy current testing device of a kind of track switch and method are provided, the conformal array eddy current testing device that design is unique, restrained effectively turnout rail surface roughness and probe lift-off to the interference of signal, overcome the surface crack testing limitation to track switch different directions, improve the precision and efficiency of detecting to track switch surface and near surface flaw, disposablely can complete large-area scanning, and imaging display is carried out to testing result.
The technical solution adopted for the present invention to solve the technical problems is: the special conformal array eddy current testing device of a kind of track switch, device comprises multiple eddy current probe, multiple micro-magnet piece, many elastic wires, conformal chain-type fixed support, feeler lever, handle, probe wire, multichannel swirl imaging detecting instrument, it is characterized in that: described multiple eddy current probe, multiple micro-magnet piece, many elastic wires, wherein, each eddy current probe and a micro-magnet piece combine fixing, each group eddy current probe-micro-magnet piece combination is fixed on one end of an elastic wire, the other end of each elastic wire is fixed in a chain unit in conformal chain-type fixed support, described micro-magnet piece has micromagnetism, described conformal chain-type fixed support is made up of multiple chain unit, and conformal chain-type fixed support can bend to arbitrary shape on its cross section, and keeps its curved shape constant upon bending, one end of described feeler lever is fixed in conformal chain-type fixed support chain unit, and the other end of feeler lever is fixed with handle, multiple eddy current probe is electrically connected with multichannel swirl imaging detecting instrument by probe wire.
The special conformal array eddy current detection method of a kind of track switch, comprises the steps,
A. the support bracket fastened shape of conformal chain-type in testing staff's regulating device, makes its curved shape close with track switch plane was seized profile; Elastic wire is when track switch plane was seized profile variations, and auxiliary eddy current probe-micro-magnet piece combination is fitted with track switch plane was seized;
B. the handle in testing staff's hand-held device, the eddy current probe of device-micro-magnet piece combination end is placed in track switch plane was seized, micro-magnet piece will be adsorbed in track switch plane was seized, and the test surface combining fixing eddy current probe with micro-magnet piece is close to track switch plane was seized;
C. open multichannel swirl imaging detecting instrument, multichannel swirl imaging detecting instrument encourages multiple eddy current probe, testing staff's hand-held device handle, and pull unit moves along track switch plane was seized; Because micro-magnet piece has micromagnetism, therefore when testing staff's pull unit moves along track switch plane was seized, micro-magnet piece ensures that the test surface of the eddy current probe fixed with its combination is close to mobile scanning in track switch plane was seized, stable in mobile scanning process, nothing is rocked and lift-off, simultaneously, micro-magnet piece magnetization track switch plane was seized, improves EDDY CURRENT length of penetration;
D. in device scanning process, the detection signal that multichannel swirl imaging detecting instrument receives multiple eddy current probe collection carries out signal transacting, and show, store testing result, judge that track switch detection faces has zero defect and defect shape and trend by eddy current signal imaging and sound and light alarm.
The invention has the beneficial effects as follows, the special conformal array eddy current testing device of a kind of track switch and method are provided, the conformal array eddy current testing device that design is unique, restrained effectively turnout rail surface roughness and probe lift-off to the interference of signal, overcome the surface crack testing limitation to track switch different directions, improve the precision and efficiency of detecting to track switch surface and near surface flaw, disposablely can complete large-area scanning, and imaging display is carried out to testing result.
Below in conjunction with embodiment, the present invention is described in further detail, but the special conformal array eddy current testing device of a kind of track switch of the present invention and method are not limited to embodiment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the device schematic diagram of the embodiment of the present invention.
Fig. 2 is the conformal chain-type fixed support bending schematic diagram arbitrarily in the device of the embodiment of the present invention.
Fig. 3 is that the track switch of the embodiment of the present invention detects schematic diagram.
Fig. 4 is the eddy current signal imaging schematic diagram of the embodiment of the present invention.
In figure, 1. eddy current probe, 2. micro-magnet piece, 3. elastic wire, 4. conformal chain-type fixed support, 5. feeler lever, 6. handle, 7. probe wire, 8. multichannel swirl imaging detecting instrument, 9. track switch detection faces, C defect shape and trend.
Embodiment
As Fig. 1, Fig. 2 is shown embodiment, the special conformal array eddy current testing device of a kind of track switch, device comprises multiple eddy current probe 1, multiple micro-magnet piece 2, many elastic wires 3, conformal chain-type fixed support 4, feeler lever 5, handle 6, probe wire 7, multichannel swirl imaging detecting instrument 8, it is characterized in that: described multiple eddy current probe 1, multiple micro-magnet piece 2, many elastic wires 3, wherein, each eddy current probe 1 and a micro-magnet piece 2 combine fixing, micro-magnet piece 2 combination of each group eddy current probe 1-is fixed on one end of an elastic wire 3, the other end of each elastic wire 3 is fixed in a chain unit in conformal chain-type fixed support 4, described micro-magnet piece 2 has micromagnetism, described conformal chain-type fixed support 4 is made up of multiple chain unit, and conformal chain-type fixed support 4 can bend to arbitrary shape on its cross section, and keeps its curved shape constant upon bending, one end of described feeler lever 5 is fixed in conformal chain-type fixed support 4 one chain units, and the other end of feeler lever 5 is fixed with handle 6, multiple eddy current probe 1 is electrically connected with multichannel swirl imaging detecting instrument 8 by probe wire 7.
As shown in Figure 3, the special conformal array eddy current detection method of a kind of track switch, comprises the steps,
The shape of the conformal chain-type fixed support 4 a. in testing staff's regulating device, makes its curved shape close with track switch plane was seized 9 profile; Elastic wire 3 is when track switch plane was seized 9 profile variations, and the micro-magnet piece 2 of auxiliary eddy current probe 1-combines fits with track switch plane was seized 9;
B. the handle 6 in testing staff's hand-held device, micro-for the eddy current probe 1-of device magnet piece 2 is combined end and is placed in track switch plane was seized 9, micro-magnet piece 2 will be adsorbed in track switch plane was seized, and the test surface combining fixing eddy current probe 1 with micro-magnet piece 2 is close to track switch plane was seized 9;
C. open multichannel swirl imaging detecting instrument 8, multichannel swirl imaging detecting instrument 8 encourages multiple eddy current probe 1, testing staff's hand-held device handle 6, and pull unit moves along track switch plane was seized 9; Because micro-magnet piece 2 has micromagnetism, therefore when testing staff's pull unit moves along track switch plane was seized 9, micro-magnet piece 2 ensures that the test surface of the eddy current probe 1 fixed with its combination is close to mobile scanning in track switch plane was seized 9, stable in mobile scanning process, nothing is rocked and lift-off, simultaneously, micro-magnet piece 2 magnetizes track switch plane was seized 9, improves EDDY CURRENT length of penetration;
D. in device scanning process, the detection signal that multichannel swirl imaging detecting instrument 8 receives the collection of multiple eddy current probe 1 carries out signal transacting, and show, store testing result, judge that track switch detection faces has zero defect and defect shape and moves towards C by eddy current signal imaging and sound and light alarm, as shown in Figure 4.
Above-described embodiment is only used for further illustrating the special conformal array eddy current testing device of a kind of track switch of the present invention and method; but invention is not limited to embodiment; every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all fall in the protection domain of technical solution of the present invention.
Claims (2)
1. the special conformal array eddy current testing device of track switch, device comprises multiple eddy current probe, multiple micro-magnet piece, many elastic wires, conformal chain-type fixed support, feeler lever, handle, probe wire, multichannel swirl imaging detecting instrument, it is characterized in that: described multiple eddy current probe, multiple micro-magnet piece, many elastic wires, wherein, each eddy current probe and a micro-magnet piece combine fixing, each group eddy current probe-micro-magnet piece combination is fixed on one end of an elastic wire, the other end of each elastic wire is fixed in a chain unit in conformal chain-type fixed support, described micro-magnet piece has micromagnetism, described conformal chain-type fixed support is made up of multiple chain unit, and conformal chain-type fixed support can bend to arbitrary shape on its cross section, and keeps its curved shape constant upon bending, one end of described feeler lever is fixed in conformal chain-type fixed support chain unit, and the other end of feeler lever is fixed with handle, multiple eddy current probe is electrically connected with multichannel swirl imaging detecting instrument by probe wire.
2. the special conformal array eddy current detection method of track switch, adopts device according to claim 1, it is characterized in that: comprise the steps,
A. the support bracket fastened shape of conformal chain-type in testing staff's regulating device, makes its curved shape close with track switch plane was seized profile; Elastic wire is when track switch plane was seized profile variations, and auxiliary eddy current probe-micro-magnet piece combination is fitted with track switch plane was seized;
B. the handle in testing staff's hand-held device, the eddy current probe of device-micro-magnet piece combination end is placed in track switch plane was seized, micro-magnet piece will be adsorbed in track switch plane was seized, and the test surface combining fixing eddy current probe with micro-magnet piece is close to track switch plane was seized;
C. open multichannel swirl imaging detecting instrument, multichannel swirl imaging detecting instrument encourages multiple eddy current probe, testing staff's hand-held device handle, and pull unit moves along track switch plane was seized; Because micro-magnet piece has micromagnetism, therefore when testing staff's pull unit moves along track switch plane was seized, micro-magnet piece ensures that the test surface of the eddy current probe fixed with its combination is close to mobile scanning in track switch plane was seized, stable in mobile scanning process, nothing is rocked and lift-off, simultaneously, micro-magnet piece magnetization track switch plane was seized, improves EDDY CURRENT length of penetration;
D. in device scanning process, the detection signal that multichannel swirl imaging detecting instrument receives multiple eddy current probe collection carries out signal transacting, and show, store testing result, judge that track switch detection faces has zero defect and defect shape and trend by eddy current signal imaging and sound and light alarm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511014390.9A CN105445364B (en) | 2015-12-31 | 2015-12-31 | A kind of dedicated conformal array eddy current testing device of track switch and method |
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| CN201511014390.9A CN105445364B (en) | 2015-12-31 | 2015-12-31 | A kind of dedicated conformal array eddy current testing device of track switch and method |
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| CN105445364B CN105445364B (en) | 2019-01-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106066363A (en) * | 2016-07-28 | 2016-11-02 | 中国铁道科学研究院金属及化学研究所 | A kind of railroad turnout steel rail eddy current conformal detection device |
| CN107219299A (en) * | 2017-06-02 | 2017-09-29 | 爱德森（厦门）电子有限公司 | It is a kind of with Steel Structure Weld crackle monitoring device and method |
| CN109444259A (en) * | 2018-12-21 | 2019-03-08 | 核动力运行研究所 | A kind of heterotype tubing absorption type eddy current array probe |
| CN110609080A (en) * | 2019-10-30 | 2019-12-24 | 爱德森（厦门）电子有限公司 | Turnout longitudinal defect eddy current detection device and method |
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| CN102431577A (en) * | 2011-10-19 | 2012-05-02 | 赵建明 | Monitoring technology of eddy current sensor for gap of turnout gap detection column and detection block |
| CN103884269A (en) * | 2014-04-04 | 2014-06-25 | 北京交通大学 | Turnout switch rail point closure deformation device based on electromagnetism eddy excitement collection |
| CN205280661U (en) * | 2015-12-31 | 2016-06-01 | 爱德森（厦门）电子有限公司 | Special shape array eddy current inspection device of fitting of switch |
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| CN102431577A (en) * | 2011-10-19 | 2012-05-02 | 赵建明 | Monitoring technology of eddy current sensor for gap of turnout gap detection column and detection block |
| CN103884269A (en) * | 2014-04-04 | 2014-06-25 | 北京交通大学 | Turnout switch rail point closure deformation device based on electromagnetism eddy excitement collection |
| CN205280661U (en) * | 2015-12-31 | 2016-06-01 | 爱德森（厦门）电子有限公司 | Special shape array eddy current inspection device of fitting of switch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066363A (en) * | 2016-07-28 | 2016-11-02 | 中国铁道科学研究院金属及化学研究所 | A kind of railroad turnout steel rail eddy current conformal detection device |
| CN107219299A (en) * | 2017-06-02 | 2017-09-29 | 爱德森（厦门）电子有限公司 | It is a kind of with Steel Structure Weld crackle monitoring device and method |
| CN109444259A (en) * | 2018-12-21 | 2019-03-08 | 核动力运行研究所 | A kind of heterotype tubing absorption type eddy current array probe |
| CN109444259B (en) * | 2018-12-21 | 2024-02-20 | 核动力运行研究所 | Special-shaped pipe adsorption type eddy current array probe |
| CN110609080A (en) * | 2019-10-30 | 2019-12-24 | 爱德森（厦门）电子有限公司 | Turnout longitudinal defect eddy current detection device and method |
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| CN105445364B (en) | 2019-01-15 |
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