CN102411028A - Eddy-current nondestructive detection method of high-heat load component connection quality for nuclear fusion device block pipe structure - Google Patents
Eddy-current nondestructive detection method of high-heat load component connection quality for nuclear fusion device block pipe structure Download PDFInfo
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- CN102411028A CN102411028A CN201110242986XA CN201110242986A CN102411028A CN 102411028 A CN102411028 A CN 102411028A CN 201110242986X A CN201110242986X A CN 201110242986XA CN 201110242986 A CN201110242986 A CN 201110242986A CN 102411028 A CN102411028 A CN 102411028A
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Abstract
The invention provides an eddy-current nondestructive detection method of high-heat load component connection quality for a testing block pipe structure, wherein a pipe internal eddy array probe is adopted for detecting each shortcoming between the elongate chromium-zirconium-copper tube and the oxygen-free copper adaptation layer, wherein the main contents include: eliminating the error detecting result caused by the nonuniform material magnetic conductivity in the component via a magnetic saturation technology; moving the radially fixed and axially glided eddy array probe along the pipe via a pusher; controlling the coil integrated on the eddy array probe to circumferentially scan via a computer, controlling the penetration depth of the eddy via a probe magnetic field stimulating frequency on the defectometer and realizing the flaw detection between the chromium-zirconium-copper tube with the thickness of 1-1.5 mm and the oxygen-free copper with the thickness of 1 mm. The detection method has high detection efficiency with simple device, which is a feasible nondestructive detection method for the acceptance and detection of the component in bulk.
Description
Technical field
The present invention relates to the eddy nondestructive testing method of fusion facility with the high heat load parts, particular content is, introduced the compound of three kinds of different metals among the preparation technology of block perforating tube structure, formed double-deck interface.For control oxygen-free copper adaptation layer and the quality of chromium zirconium copper plumbing combination interface wherein effectively, employing inside-through type eddy current array probe system detection method.This method is with the parts after magnetic saturationization; Adopt the interpolation type eddy current array probe along the chrome zirconium copper alloy water pipe; Pull out device and make probe axially-movable in pipeline through pushing away; Computer control this moment coil makes it to circumferentially carrying out scanning in the pipeline, passes through the adjustment of the probe stimulating frequency of defectoscope again, and then realizes the accurate location and the detection by quantitative of this binding site defective.
Background technology
The phase one of ITER D-T, Be, C and W will be as being combined into towards plasma parts (Plasma facing component, i.e. PFC) towards plasma material (Plasma facing material, i.e. PFM) and Cu heat sink material.The PFC that Be forms will be placed on first wall position (low heat loads zone), and the PFC that C and W form then is placed on divertor position (high heat load zone).
W or C comprise monolithic type (Monoblock Type) and flat type (Flat Type) with heat sink being connected of Cu.The characteristic of monolithic type is the block central area perforate at W or C, passes perforate to the Cu cooling water pipe then and block couples together.The PFC of monolithic type can reduce the thermal stress of W or C and linkage interface, bears the impact of circulation high heat load.The monolithic type is the preferred option of fusion facility divertor part high heat load parts preparation.Because this structure member is positioned at the high heat load zone, therefore strict quality assurance to be arranged.To this situation, associated mechanisms has been carried out the research of lossless detection method, mainly contains two types; One type is that infrared thermal transient is as method; The principle of this kind method is a logical hot and cold water in cooling duct, the monitoring through infrared camera in the thermal cross over process, and then judge the interface bond quality.The advantage of this kind method is can realize detecting fast, but exists affected by environment greatly, and accuracy of detection is not high, and can only judge the shortcoming of inner combination situation through the infrared image of two dimension; Another kind of is pipeline interpolation type supersonic testing method; With the sample water logging, pull out device and probe Rotable Control System with inserting the Cu pipe in the miniature flexible rotating detector, utilize to push away; Make it in pipe interior turnover and rotation scanning; The stimulating frequency of control probe is controlled at combination interface with highest detection sensitivity in addition, and then obtains scanning spectra, judges bond quality by this.The advantage of this kind method is to obtain the information of binding layer intuitively from collection of illustrative plates, and accuracy of detection is high, but needs couplant can influence detection efficiency greatly, causes than mistake at probe positions gathering bubble thereby to testing result easily in the rotary course in addition.
The exploitation of this method can effectively solve the drawback of above two kinds of methods in testing process when guaranteeing accuracy of detection, checking and accepting for the mass of parts provides reliable guarantee.
Summary of the invention
The invention discloses a kind of fusion facility with high heat load parts non-destructive method.This detection method has guaranteed that block is towards the liner oxygen-free copper adaptation layer of plasma material and the quality of connection between the chromium-zirconium-copper tubes.Detection method is simple, and efficient is high.The high heat load parts that this method detects can bear the high heat load circulation impact, are applicable in the fusion facility of long pulse, high parameter.
Technical scheme of the present invention is following:
The eddy nondestructive testing method that is used for nuclear fusion device block perforating tube structure high heat load parts quality of connection; Described perforating tube structure high heat load parts include: the oxygen-free copper liner in tungsten piece with holes or CFC piece and the said hole links together; Form the thick middle layer of the about 1mm of one deck, use the thick chromium zirconium copper cooling water pipe of 1 ~ 1.5mm to pass in the oxygen-free copper liner of one group of tungsten piece then and couple together; It is characterized in that: for cooperating the structure of chromium-zirconium-copper tubes; Adopt special miniature column eddy current array probe; The plurality of rows coil array of this probe circumferentially is distributed on the skeleton of probe; Through transmitting coil and the position of magnetic test coil and the control that transmitting coil excites delay in the computing machine array probe, the detection that defective circumferentially or is axially peeled off in realization, and the result preserved; Handle; Magnetic excitation frequency through eddy current flaw detec adjustment transmitting coil makes eddy current effectively to penetrate chromium-zirconium-copper tubes and then reaches between binding layer that array probe utilizes supporting construction to be fixed in center in the pipe in this testing process, adopts to push away and pulls out device and make it in pipe, carry out axial moving.
Described lossless detection method is characterized in that, this method is that the bond quality of chromium zirconium copper and oxygen-free copper interlayer is detected, and can realize radially peeling off width and be not less than 0.5mm, circumferentially peels off width Delta θ and be not less than 20
.Axially peel off width and be not less than the detection of the defective of 1/3rd monolithic thickness.
Described non-destructive method is characterized in that, concrete operations are following:
(1) adopts the magnetic saturation technology that whole poling parts are handled, eliminate the error that the nonferromugnetic material magnetic permeability unevenness in the testing process possibly brought, carry out demagnetization after the off-test again and handle;
(2) supporting mechanism of probe combines with chromium-zirconium-copper tubes is fastening, can slide at pipeline axial simultaneously;
(3) through the taper attachment of mechanical system, make probe in pipeline, can carry out axially-movable, probe itself is realized circumferentially detecting through computer control.
Described lossless detection method is characterized in that: combine concrete accuracy of detection requirement, the activity coefficient of popping one's head in is controlled in 0.6 ~ 0.9 scope.
Described lossless detection method is characterized in that: the stimulating frequency of adjustment probe interior loop and then the control detection degree of depth according to the variation of chromium-zirconium-copper tubes footpath thickness, are obtained best test frequency in 1KHz ~ 20KHz scope between oxygen-free copper and chromium zirconium copper.
This detection method equipment is simple, and detection efficiency is higher, and checking and accepting for the batch of this quasi-structure component provides feasible lossless detection method.
Embodiment
The method of employing eddy current array probe interpolation type is carried out the scanning of system to the oxygen-free copper and the binding layer between the chromium-zirconium-copper tubes of block poling parts.At first adopt the magnetic saturation technology that parts are handled, the error that the magnetic permeability unevenness of chromium-zirconium-copper tubes possibly brought in the elimination testing process.Combine concrete accuracy of detection requirement again, the fill factor, curve factor of test probe is controlled in 0.6 ~ 0.9 scope.Utilize pushing away in the mechanical system to pull out device control probe and in pipeline, carry out axial motion; The front end of seized article body part is reserved one section not compound chromium-zirconium-copper tubes; Defectoscope is arranged in this its stimulating frequency of segment pipe process adjustment at probe; According to the variation of chromium-zirconium-copper tubes footpath thickness, in 1KHz ~ 20KHz scope, obtain best test frequency.System after being provided with detects through above parameter, can realize the width of radially peeling off between oxygen-free copper in the parts and the chromium-zirconium-copper tubes is not less than 0.5mm, circumferentially peels off width Delta θ and be not less than 20
.Be not less than the detection of the defective of 1/3rd monolithic thickness with axial strip length.
Claims (6)
1. the eddy nondestructive testing method that is used for nuclear fusion device block perforating tube structure high heat load parts quality of connection; Described perforating tube structure high heat load parts include: the oxygen-free copper liner in tungsten piece with holes or CFC piece and the said hole links together; Form the thick middle layer of the about 1mm of one deck, use the thick chromium zirconium copper cooling water pipe of 1 ~ 1.5mm to pass in the oxygen-free copper liner of one group of tungsten piece then and couple together; It is characterized in that: for cooperating the structure of chromium-zirconium-copper tubes; Adopt special miniature column eddy current array probe; The plurality of rows coil array of this probe circumferentially is distributed on the skeleton of probe; Through transmitting coil and the position of magnetic test coil and the control that transmitting coil excites delay in the computing machine array probe, the detection that defective circumferentially or is axially peeled off in realization, and the result preserved; Handle; Magnetic excitation frequency through eddy current flaw detec adjustment transmitting coil makes eddy current effectively to penetrate chromium-zirconium-copper tubes and then reaches between binding layer that array probe utilizes supporting construction to be fixed in center in the pipe in this testing process, adopts to push away and pulls out device and make it in pipe, carry out axial moving.
2. lossless detection method according to claim 1; It is characterized in that; This method is that the bond quality of chromium zirconium copper and oxygen-free copper interlayer is detected, and can realize radially peeling off width and be not less than 0.5mm, circumferentially peels off width Delta θ and be not less than 20
.
3. and axially peel off the detection that width is not less than the defective of 1/3rd monolithic thickness.
4. non-destructive method according to claim 1 and 2 is characterized in that concrete operations are following:
(1) adopts the magnetic saturation technology that whole poling parts are handled, eliminate the error that the nonferromugnetic material magnetic permeability unevenness in the testing process possibly brought, carry out demagnetization after the off-test again and handle;
(2) supporting mechanism of probe combines with chromium-zirconium-copper tubes is fastening, can slide at pipeline axial simultaneously;
(3) through the taper attachment of mechanical system, make probe in pipeline, can carry out axially-movable, probe itself is realized circumferentially detecting through computer control.
5. lossless detection method according to claim 1 is characterized in that: combine concrete accuracy of detection requirement, the activity coefficient of popping one's head in is controlled in 0.6 ~ 0.9 scope.
6. lossless detection method according to claim 1; It is characterized in that: the stimulating frequency of adjustment probe interior loop and then the control detection degree of depth are between oxygen-free copper and chromium zirconium copper; According to the variation of chromium-zirconium-copper tubes footpath thickness, in 1KHz ~ 20KHz scope, obtain best test frequency.
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| CN201110242986XA CN102411028A (en) | 2011-08-24 | 2011-08-24 | Eddy-current nondestructive detection method of high-heat load component connection quality for nuclear fusion device block pipe structure |
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| CN201110242986XA CN102411028A (en) | 2011-08-24 | 2011-08-24 | Eddy-current nondestructive detection method of high-heat load component connection quality for nuclear fusion device block pipe structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680570A (en) * | 2012-05-08 | 2012-09-19 | 上海海隆防腐技术工程有限公司 | Composite steel pipe defect detecting device and composite steel pipe defect detecting method |
| CN109142512A (en) * | 2018-08-08 | 2019-01-04 | 爱德森（厦门）电子有限公司 | A kind of in-service track shear crack assesses device and method automatically |
| CN111505114A (en) * | 2020-05-29 | 2020-08-07 | 中国科学院合肥物质科学研究院 | Eddy current testing device and eddy current testing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680570A (en) * | 2012-05-08 | 2012-09-19 | 上海海隆防腐技术工程有限公司 | Composite steel pipe defect detecting device and composite steel pipe defect detecting method |
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| CN109142512A (en) * | 2018-08-08 | 2019-01-04 | 爱德森（厦门）电子有限公司 | A kind of in-service track shear crack assesses device and method automatically |
| CN111505114A (en) * | 2020-05-29 | 2020-08-07 | 中国科学院合肥物质科学研究院 | Eddy current testing device and eddy current testing method |
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Application publication date: 20120411 |