Three-dimensional detection method for defects of sealing surface

A three-dimensional detection and sealing surface technology, applied in the field of defect detection, can solve the problems of affecting measurement accuracy, increasing the dose of radiation received by operators, and unable to quantify the size of defects, so as to improve measurement accuracy, eliminate missed inspections, and achieve size quantification. The effect of detection

Active Publication Date: 2014-06-18
CHINA NUCLEAR POWER TECH RES INST CO LTD +1
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Problems solved by technology

However, the two methods have the following defects: (1) The detection results of the visual inspection method are easily affected by the subjective judgment of the operator, thereby affecting the measurement accuracy; (2) The online video observation method is easy to miss fine scratches; (3) The above two This detecti

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  • Three-dimensional detection method for defects of sealing surface
  • Three-dimensional detection method for defects of sealing surface
  • Three-dimensional detection method for defects of sealing surface

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[0028] The embodiments of the present invention will now be described with reference to the accompanying drawings, in which similar element numbers represent similar elements.

[0029] Please refer to figure 1 , The three-dimensional defect detection method of the sealing surface of the present invention includes the following steps:

[0030] S101: Obtain a picture with scratches on the sealing surface;

[0031] S102: Obtain the length and initial width of the scratch according to the image with the scratch;

[0032] S103: Determine the scanning path according to the initial width;

[0033] S104, plan a scan trajectory according to the scan path;

[0034] S105: Scan the scratches along the scanning track to determine the depth and final width of the scratches.

[0035] Compared with the prior art, the three-dimensional detection method for sealing surface defects of the present invention first obtains all the pictures with scratches on the sealing surface, thereby basically eliminating th...

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Abstract

The invention discloses a three-dimensional detection method for the defects of a sealing surface. The three-dimensional detection method comprises the following steps: obtaining pictures with scratches on the sealing surface; obtaining the length and the initial width of each scratch according to the pictures with the scratches; determining a scanning route according to the initial width; planning a scanning track according to the scanning route; and scanning the scratches along the scanning track, thus determining the depth and the final width of each scratch. Compared with the prior art, the three-dimensional detection method for the defects of the sealing surface has the advantages that the pictures with the scratches on the sealing surface are obtained so as to avoid a leak detection condition of the small scratches; then the length and the initial width of each scratch are obtained according to the pictures, the scanning route is determined according to the initial width, the scanning track is further planted according to the scanning route, and finally, the scratches are scanned along the scanning track so as to determine the depth and the final width of each scratch, so as to realize the three-dimensional detection of the defects of the sealing surface. Meanwhile, the measurement precision is improved and the size quantification detection on the three-dimensional defects of the sealing surface is realized.

Description

technical field [0001] The invention relates to the technical field of defect detection, and in particular to a three-dimensional detection method for sealing surface defects. Background technique [0002] At present, when performing three-dimensional defect detection on the sealing surface, two methods are mainly used: visual inspection and online video observation. However, the two methods have the following defects: (1) The detection results of the visual inspection method are easily affected by the subjective judgment of the operator, thereby affecting the measurement accuracy; (2) The online video observation method is easy to miss fine scratches; (3) The above two This detection method can only realize the qualitative judgment of the sealing surface defect, but cannot quantify the size of the defect. [0003] In addition, a large number of equipment in modern nuclear power plants need grinding and polishing during maintenance, especially equipment with high sealing re...

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Application Information

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IPC IPC(8): G01N21/88G01B11/22G01B11/02
CPCY02E30/30
Inventor 陈嘉杰张涛蒋良中刘青松余冰钱建华李腾龙孙绮林李晓袁任重
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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