CN108872366A - A kind of adaptive quadrature Eddy Current Testing Transducer - Google Patents
A kind of adaptive quadrature Eddy Current Testing Transducer Download PDFInfo
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- CN108872366A CN108872366A CN201810809008.0A CN201810809008A CN108872366A CN 108872366 A CN108872366 A CN 108872366A CN 201810809008 A CN201810809008 A CN 201810809008A CN 108872366 A CN108872366 A CN 108872366A
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- eddy current
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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
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
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Abstract
The invention discloses a kind of adaptive quadrature Eddy Current Testing Transducers; using the method for the fixed magnet at orthogonal test coil of eddy current orthogonal points; and the protective shell for non-conductive magnetic conduction or weakly conducting permeability magnetic material being put on outside coil rack; keep orthogonal test coil of eddy current free to slide in a certain range in protective shell together with skeleton; the characteristics of being attracted each other using magnet and tested ferromagnetic workpiece detection faces; guarantee that orthogonal Eddy Current Testing Transducer optimum detection sensitive volume is in the normal direction in detected face always, guarantees to detect optimum sensitivity with this.
Description
Technical field
The present invention relates to a kind of non-destructive testing devices, more particularly to a kind of adaptive quadrature Eddy Current Testing Transducer.
Background technique
The Eddy Current Testing Transducer of orthogonal coiling, because it is insensitive to Lift-off effect, therefore be widely used in metal welding seam etc.
The detection of rough material crack defect.However, effect is just had a greatly reduced quality, it is studied carefully when test object is cambered surface
Reason is the optimum detection sensitive volume of sensor, i.e., the orthogonal crossover point of the test coil of eddy current of orthogonal coiling, not in detection faces
Normal direction, cause its detection sensitivity to be greatly reduced, Lift-off effect becomes sensitive.
Summary of the invention
It is an object of the invention to overcome the deficiency of the prior art, for the ferrimagnet for being largely present in industrial circle
A kind of adaptive quadrature Eddy Current Testing Transducer is provided.I.e. using the side of the fixed magnet at orthogonal test coil of eddy current orthogonal points
Method guarantees that orthogonal Eddy Current Testing Transducer is most preferably examined the characteristics of attracting each other using magnet and tested ferromagnetic workpiece detection faces
The normal direction that sensitive volume is in detected face always is surveyed, guarantees to detect optimum sensitivity with this.
The technical solution adopted by the present invention to solve the technical problems is：A kind of adaptive quadrature Eddy Current Testing Transducer,
Including spherical skeleton, magnet, orthogonal winding test coil of eddy current, protective shell, it is characterised in that：The orthogonal winding EDDY CURRENT
Coil is fastened on spherical skeleton；The magnet insertion is fixed on the spherical shape at orthogonal winding test coil of eddy current orthogonal points
In skeleton；The protective shell is non-conductive magnetic conduction or weakly conducting permeability magnetic material, and the protective shell bottom is hemisphere shell mould, is just entwined
Assembly around test coil of eddy current, spherical skeleton, magnet is placed in protective shell in the hemispherical Shell of bottom, orthogonal winding vortex inspection
Test coil, spherical skeleton, magnet assembly can be free to slide in hemispherical Shell.
When detecting ferromagnetic workpiece using adaptive quadrature Eddy Current Testing Transducer of the invention, when scanning is to detection faces
When the tested region of cambered surface, due to the effect that magnet attracts each other with tested ferromagnetic workpiece detection faces, orthogonal EDDY CURRENT is passed
Always the normal direction in the face of being detected so can be made orthogonal Eddy Current Testing Transducer always by the coil orthogonal points of sensor
Keep optimum detection sensitivity.
The invention has the advantages that a kind of adaptive quadrature Eddy Current Testing Transducer, using in orthogonal EDDY CURRENT line
The method for enclosing fixed magnet at orthogonal points, and the protection for non-conductive magnetic conduction or weakly conducting permeability magnetic material being put on outside coil rack
Shell keeps orthogonal test coil of eddy current free to slide in a certain range in protective shell together with skeleton, utilizes magnet and quilt
The characteristics of inspection ferromagnetic workpiece detection faces attract each other, guarantees that orthogonal Eddy Current Testing Transducer optimum detection sensitive volume is in always
The normal direction in the face of being detected guarantees to detect optimum sensitivity with this.
Invention is further described in detail with reference to embodiments, but a kind of adaptive quadrature of the invention is vortexed inspection
Sensor is surveyed to be not limited to the embodiment.
Detailed description of the invention
The present invention is further described for middle embodiment with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of conventional orthorhombic Eddy Current Testing Transducer.
Schematic diagram when Fig. 2 is conventional orthorhombic Eddy Current Testing Transducer detection plane and cambered surface.
Fig. 3 is the structural schematic diagram of the adaptive quadrature Eddy Current Testing Transducer of the embodiment of the present invention.
Schematic diagram when Fig. 4 is the adaptive quadrature Eddy Current Testing Transducer detection cambered surface of the embodiment of the present invention.
In figure, 1. spherical skeletons, 2. magnets, the orthogonal winding test coil of eddy current of L1, L2., 3. protective shells, 4. examined workpieces
Detection faces, A. orthogonal points, F. normal.
Specific embodiment
Fig. 1 is shown, the structural schematic diagram of conventional orthorhombic Eddy Current Testing Transducer, and Fig. 2 is that conventional orthorhombic EDDY CURRENT passes
Sensor detects schematic diagram when cambered surface, it is seen that the optimum detection spirit of sensor when conventional orthorhombic Eddy Current Testing Transducer detects cambered surface
Quick area, i.e., the orthogonal points A of orthogonal winding test coil of eddy current L1, L2, cannot keep in the direction normal F of detection faces 4, leads to it
Detection sensitivity is greatly reduced.
The embodiment of the present invention, such as Fig. 3, a kind of adaptive quadrature Eddy Current Testing Transducer, including spherical skeleton 1, magnet 2,
Orthogonal winding test coil of eddy current L1, L2, protective shell 3, it is characterised in that：Described orthogonal winding test coil of eddy current L1, L2 are twined
Around being fixed on spherical skeleton 1；The magnet 2 is embedded in the ball being fixed at orthogonal winding test coil of eddy current L1, L2 orthogonal points A
In shape skeleton 1；The protective shell 3 is non-conductive magnetic conduction or weakly conducting permeability magnetic material, and 3 bottom of protective shell is hemisphere shell mould,
Orthogonal winding test coil of eddy current L1, L2, spherical skeleton 1, magnet 2 assembly be placed in protective shell 3 in the hemispherical Shell of bottom,
Orthogonal winding test coil of eddy current L1, L2, spherical skeleton 1, magnet 2 assembly can be free to slide in hemispherical Shell.
As described in Figure 4, when detecting ferromagnetic workpiece using adaptive quadrature Eddy Current Testing Transducer of the invention, work as scanning
When to the tested region that detection faces 4 are cambered surface, due to the effect that magnet 2 and tested ferromagnetic workpiece detection faces 4 attract each other, just
Hand over the coil orthogonal points A of Eddy Current Testing Transducer in the direction normal F for being detected face 4, can so will make orthogonal whirlpool always
Stream detection sensor remains optimum detection sensitivity.
Above-described embodiment is only used to further illustrate a kind of adaptive quadrature Eddy Current Testing Transducer of the invention, but the present invention is simultaneously
It is not limited to the embodiment, according to the technical essence of the invention any simple modification to the above embodiments, equivalent change
Change and modify, falls within the scope of protection of technical solution of the present invention.
Claims (1)
1. a kind of adaptive quadrature Eddy Current Testing Transducer, including spherical skeleton, magnet, orthogonal winding test coil of eddy current are protected
Protective case, it is characterised in that：The orthogonal winding test coil of eddy current is fastened on spherical skeleton；The magnet insertion is fixed
In the spherical skeleton at orthogonal winding test coil of eddy current orthogonal points；The protective shell is non-conductive magnetic conduction or weakly conducting magnetic conduction
Material, the protective shell bottom are hemisphere shell mould, the assembly placement of orthogonal winding test coil of eddy current, spherical skeleton, magnet
In protective shell in the hemispherical Shell of bottom, orthogonal winding test coil of eddy current, spherical skeleton, magnet assembly can be in hemispherical Shell
It is interior free to slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809008.0A CN108872366B (en) | 2018-07-23 | 2018-07-23 | Self-adaptive orthogonal eddy current detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809008.0A CN108872366B (en) | 2018-07-23 | 2018-07-23 | Self-adaptive orthogonal eddy current detection sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108872366A true CN108872366A (en) | 2018-11-23 |
| CN108872366B CN108872366B (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810809008.0A Active CN108872366B (en) | 2018-07-23 | 2018-07-23 | Self-adaptive orthogonal eddy current detection sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763755A (en) * | 2019-10-29 | 2020-02-07 | 广东省特种设备检测研究院珠海检测院 | Evaluation method capable of rapidly evaluating crack defect direction of metal material |
| CN111766295A (en) * | 2020-07-31 | 2020-10-13 | 广东汕头超声电子股份有限公司 | Eddy current detection probe for detecting steel rail welding seam and detection method thereof |
Citations (7)
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| JPH102883A (en) * | 1996-06-18 | 1998-01-06 | Mitsubishi Heavy Ind Ltd | Eddy current flaw detection apparatus |
| JP2004219188A (en) * | 2003-01-14 | 2004-08-05 | Itake Shoji Kk | Probe for eddy current examination |
| CN102879461A (en) * | 2012-09-30 | 2013-01-16 | 爱德森（厦门）电子有限公司 | Non-directional electromagnetic detecting sensor based on crosslinking differential detecting principle |
| JP2014025704A (en) * | 2012-07-24 | 2014-02-06 | Toshiba Corp | Eddy current flaw detection device |
| CN107024534A (en) * | 2017-04-11 | 2017-08-08 | 北京工业大学 | The omni-directional vortex self-adapting scanning system of carbon fibre reinforced composite uniformity defect |
| CN206489116U (en) * | 2017-01-18 | 2017-09-12 | 西安交通大学 | A kind of magnetic drives formula Array eddy-current probe for defect inspection |
| CN108120764A (en) * | 2017-12-21 | 2018-06-05 | 爱德森（厦门）电子有限公司 | A kind of orthogonal Eddy Current Testing Transducer |
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2018
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Patent Citations (7)
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| JPH102883A (en) * | 1996-06-18 | 1998-01-06 | Mitsubishi Heavy Ind Ltd | Eddy current flaw detection apparatus |
| JP2004219188A (en) * | 2003-01-14 | 2004-08-05 | Itake Shoji Kk | Probe for eddy current examination |
| JP2014025704A (en) * | 2012-07-24 | 2014-02-06 | Toshiba Corp | Eddy current flaw detection device |
| CN102879461A (en) * | 2012-09-30 | 2013-01-16 | 爱德森（厦门）电子有限公司 | Non-directional electromagnetic detecting sensor based on crosslinking differential detecting principle |
| CN206489116U (en) * | 2017-01-18 | 2017-09-12 | 西安交通大学 | A kind of magnetic drives formula Array eddy-current probe for defect inspection |
| CN107024534A (en) * | 2017-04-11 | 2017-08-08 | 北京工业大学 | The omni-directional vortex self-adapting scanning system of carbon fibre reinforced composite uniformity defect |
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Non-Patent Citations (2)
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| WATKINS ARTHUR D ET AL.: "Eddy Current Examination of Spent Nuclear Fuel Canister Closure Welds", 《OFFICE OF SCIENTIFIC & TECHNICAL INFORMATION TECHNICAL REPORTS》 * |
| 赵汝翾 等: "正交差分线圈在涡流检测领域的应用研究", 《2016远东无损检测新技术论坛-现代无损检测要素-先进技术+高素质人员论文集》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763755A (en) * | 2019-10-29 | 2020-02-07 | 广东省特种设备检测研究院珠海检测院 | Evaluation method capable of rapidly evaluating crack defect direction of metal material |
| CN111766295A (en) * | 2020-07-31 | 2020-10-13 | 广东汕头超声电子股份有限公司 | Eddy current detection probe for detecting steel rail welding seam and detection method thereof |
| CN111766295B (en) * | 2020-07-31 | 2022-12-13 | 广东汕头超声电子股份有限公司 | Eddy current detection probe for detecting steel rail welding seam and detection method thereof |
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| CN108872366B (en) | 2021-12-21 |
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