CN1469102A - X-ray detection method for thickness of cable insulation layer - Google Patents
X-ray detection method for thickness of cable insulation layer Download PDFInfo
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- CN1469102A CN1469102A CNA031465064A CN03146506A CN1469102A CN 1469102 A CN1469102 A CN 1469102A CN A031465064 A CNA031465064 A CN A031465064A CN 03146506 A CN03146506 A CN 03146506A CN 1469102 A CN1469102 A CN 1469102A
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Abstract
The present invention provides one method of detecting cable insulating layer thickness. The X-ray emitting head and the X-ray receiving head are set separately on two sides of the cable, and the thick of the cable insulating layer can be measured by measuring X-ray intensity in the receiving head. In an improved detection apparatus, the detecting pair comprising the X-ray emitting head and the X-ray receiving head can move in the direction perpendicular to the cable axis. In another improved detection apparatus, the detecting pair comprising the X-ray emitting head and the X-ray receiving head can rotate around the cable axis. The in-situ cable detecting method makes it possible to raise the quality and yield of cable greatly.
Description
Technical field:
The present invention relates to a kind of X-ray check method.Especially the online detection of thickness of insulating layer of cable production.
Background technology:
In the cable production run, the thickness of cable insulation and degree of eccentricity thereof are the leading indicators of decision cable quality height, but cable is a quantity-produced process, if the non-destructive detection method with general almost is difficult to, especially online detection, domestic cable production testing equipment is nearly all monopolized by offshore company at present, its cost of equipment height, complex structure, maintenance difficult.
Summary of the invention:
The invention provides a kind of can overall process, the X-ray check method of omnibearing a kind of cable insulation thickness and degree of eccentricity thereof, the X-ray variations of flux of passing insulation course by the measurement diverse location can obtain thickness of insulating layer and amounts of thickness variation thereof, solved and used overseas equipment complex structure, a difficult problem that expense is high
Its method of work is such: X-ray emitting head and an acceptance apportion cable both sides, the X-ray line is perpendicular to cable.The X-ray emitting head is finished the one lateral shear scanning motion of lateral isolation layer along carrying out motion scan perpendicular to the direction of cable, and is traversing to the insulation course another side by the whole high speed of frame, carries out same lateral isolation layer opposite side tomoscan again.
Its method of work can also be such: the X-ray line is taken cable insulation, utilize to accept each pixel of head and be a sensing point and laterally cover insulation course and carry out tomography on one side, carry out same tomography to the insulation course another side by the whole high speed of frame is traversing.
Its method of work can also be added: output signal is amplified through simulation, and 12 A/D conversion are delivered to computing machine and carried out data processing.
Its method of work can also appendage: whenever finish the detection of a position, the direction of X-ray line can detect according to the insulation course that other positions are carried out in the variation that the 0-360 degree is made in setting.
Use above-mentioned detection method, not only solved the problem that to carry out the online nondestructive thickness measuring of a certain direction to cable production, and the point of thickness measuring almost is wholecircle week, can in time record the degree of eccentricity of insulation course.
Description of drawings:
Fig. 1 is an X-ray check principle schematic of the present invention
Fig. 2 is the synoptic diagram of the scanning position that amplifies of the present invention
Fig. 3 is the shot detection synoptic diagram that the present invention amplifies
Fig. 4 is the program synoptic diagram of a typical scan
1, X-ray receives head; 2, horizontal mobile device; 3, X-ray receives the stationary installation between head and the emitting head; 4, X-ray emitting head; 6, cable; 7, cable core; 8, insulation course; 9, Sao Miao the X-ray emitting head position that begins or finish;
Embodiment:
The present invention is further illustrated with reference to the accompanying drawings below.
Extremely shown in Figure 4 in conjunction with Fig. 1, X-ray emitting head 4 is paid with reception 1 one-tenth one X-ray check of fixing by stationary installation, the X-ray line that emitting head 4 sends is by the insulation course of cable, the aerial decay of X-ray line is different with decay in cable insulation, when the thickness of cable insulation changes, accept the X-ray intensity that head received and also just change, measure this variation, just can corresponding calculated go out the thickness of insulation course.
The X-ray that receives the head reception can be a scanning pencil X-ray, the X-ray bundle that receives inwardly terminates in inner edge from cable 6 outer most edge gradually, finish the detection of the thickness of insulating layer of a position, X-ray receives the dynamically X-ray line of receiving intensity variation of head, according to set scaling method, just can detect the thickness of insulation course.
Also can be the X-ray that certain width is arranged, the thickness of its width and insulation course 8 be approaching, receives the X-ray radiation (exposure that is equivalent to camera) that head is accepted its certain hour, finish the thickness measuring of a position of insulation course, according to radiation intensity, just can calculate the thickness of insulation course.
Accept 1 output signal at X-ray and amplify through simulation, 12 A/D conversion are delivered to computing machine and are carried out data processing, just can detect the thickness of cable 6 insulation courses 8 of online production in real time.
Can also be as required, after finishing single pass or finishing once shooting, pick-up unit rotates around cable axis immediately, carries out the same program of second position, so just can measure the thickness of insulating layer of optional position.
The following describes one and typically detect a loop program with scanning, as shown in Figure 4, X-ray is from the outer most edge of the cable outer most edge to cable core, move and cut a thickness of insulating layer A, stop the emission of X-ray then, frame is crossed cable core B fast, X-ray begins emission, X-ray scans C from the outer most edge of cable core to the outer most edge of cable, to the outer most edge part of cable, stops the emission of X-ray line, rotate 90 degree, begin above-mentioned trace routine D-E-F process, in general, through two diametric insulation course scannings at 90 degrees to each other, substantially the diameter that can Real-time and Dynamic records cable, accurate more if desired, then evenly the circumference equal portions select the insulation course of a plurality of directions to detect, and can measure the thickness of insulation course better.
Claims (5)
1, a kind of cable insulation thickness X light detection method is characterized in that: the X-ray variations of flux of passing insulation course by measurement can obtain insulation course degree of eccentricity variable quantity, X-ray emitting head and an acceptance apportion cable both sides, and the X-ray line is perpendicular to cable.
2, cable insulation thickness X light detection method as claimed in claim 1, it is characterized in that: the X-ray emitting head is along carrying out motion scan perpendicular to the direction of cable, finish the one lateral shear scanning motion of lateral isolation layer, traversing by the whole high speed of frame to the insulation course another side, carry out same lateral isolation layer opposite side tomoscan again.
3, cable insulation thickness X light detection method as claimed in claim 1, it is characterized in that: the X-ray line is taken cable insulation, utilize to accept each pixel of head and be a sensing point and laterally cover insulation course and carry out tomography on one side, carry out same tomography to the insulation course another side by the whole high speed of frame is traversing.
4, as claim 2 or 3 described cable insulation thickness X light detection methods, it is characterized in that: X-ray is accepted head output signal and is amplified through simulation, and 12 A/D conversion are delivered to computing machine and carried out data processing.
5, cable insulation thickness X light detection method as claimed in claim 4 is characterized in that: whenever finish the detection of a position, the direction of X-ray line can detect according to the insulation course that other positions are carried out in the variation that the 0-360 degree is made in setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031465064A CN1469102A (en) | 2003-07-03 | 2003-07-03 | X-ray detection method for thickness of cable insulation layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031465064A CN1469102A (en) | 2003-07-03 | 2003-07-03 | X-ray detection method for thickness of cable insulation layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1469102A true CN1469102A (en) | 2004-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031465064A Pending CN1469102A (en) | 2003-07-03 | 2003-07-03 | X-ray detection method for thickness of cable insulation layer |
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| CN (1) | CN1469102A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893432A (en) * | 2009-05-21 | 2010-11-24 | 昆山善思光电科技有限公司 | Nondestructive flaw detection thickness meter |
| CN101363728B (en) * | 2007-08-11 | 2011-08-17 | 斯考拉股份公司 | Method for visualising the eccentricity of cables when measuring the eccentricity of the cable |
| CN104296700A (en) * | 2014-09-29 | 2015-01-21 | 成都英博联宇科技有限公司 | Power cable eccentric detecting system |
| CN105423929A (en) * | 2015-12-30 | 2016-03-23 | 合肥星辰电线电缆股份有限公司 | Cable insulated layer thickness detection method |
| CN105890553A (en) * | 2016-04-08 | 2016-08-24 | 中国科学院等离子体物理研究所 | Nondestructive detection method by using X rays for online measuring torsion rate of superconducting cable |
| CN107152918A (en) * | 2017-05-26 | 2017-09-12 | 重庆泰山电缆有限公司 | A kind of special fixture of extra-high-tension cable core derivometer calibration |
-
2003
- 2003-07-03 CN CNA031465064A patent/CN1469102A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363728B (en) * | 2007-08-11 | 2011-08-17 | 斯考拉股份公司 | Method for visualising the eccentricity of cables when measuring the eccentricity of the cable |
| CN101893432A (en) * | 2009-05-21 | 2010-11-24 | 昆山善思光电科技有限公司 | Nondestructive flaw detection thickness meter |
| CN101893432B (en) * | 2009-05-21 | 2014-11-26 | 昆山善思光电科技有限公司 | Nondestructive flaw detection thickness meter |
| CN104296700A (en) * | 2014-09-29 | 2015-01-21 | 成都英博联宇科技有限公司 | Power cable eccentric detecting system |
| CN105423929A (en) * | 2015-12-30 | 2016-03-23 | 合肥星辰电线电缆股份有限公司 | Cable insulated layer thickness detection method |
| CN105890553A (en) * | 2016-04-08 | 2016-08-24 | 中国科学院等离子体物理研究所 | Nondestructive detection method by using X rays for online measuring torsion rate of superconducting cable |
| CN107152918A (en) * | 2017-05-26 | 2017-09-12 | 重庆泰山电缆有限公司 | A kind of special fixture of extra-high-tension cable core derivometer calibration |
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