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Detection device and method for D type circumferential weld

A detection device and D-ring technology, which is applied in the direction of material analysis using radiation, etc., can solve the problems of narrow space on the back of the D-shaped ring weld, exposure of workers, and high radiation intensity, so as to optimize the ray detection process and reduce high-altitude The effect of high degree of operation and automation

Inactive Publication Date: 2018-11-27
淮南新能源研究中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The space behind the D-shaped girth weld is narrow, and it is impossible to realize artificial cloth
The existing mature automated patching systems are designed based on the principle of magnetic adsorption, and the raw material of the vacuum chamber is ultra-low carbon austenitic stainless steel, which is not magnetically conductive, which limits the application of conventional patching devices
[0006] 2. The size of the vacuum chamber is huge, the efficiency of manual handling of the radiation source for detection is low, and the installation and positioning of the radiation source are difficult. At the same time, manual handling of the radiation source also has the risk of working at high altitudes and exposing workers to the radiation environment due to misoperation
[0007] 3. For the on-site welding of the huge stainless steel structure of the vacuum chamber, the existing mature ray transillumination process generally uses the gamma ray source. This transillumination technology has high radiation intensity and low film quality, which cannot meet the actual installation of the vacuum chamber. On-site Radiation Intensity Control Standards and Quality Requirements for Films in RCC-MR Specifications

Method used

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  • Detection device and method for D type circumferential weld
  • Detection device and method for D type circumferential weld
  • Detection device and method for D type circumferential weld

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] As an optimization description of the above technical solutions:

[0038] The crawling mechanism 42 includes a driven wheel 411 which is engaged with the driving wheel of the output shaft of the crawler motor. The crawler wheels 412 are coaxially arranged on both sides of the driven wheel 411 and the encoder is arranged on the driven wheel 411 . The purpose is to realize the rough positioning of the position points of the cloth pieces more accurately and quickly.

Embodiment 2

[0040] As an optimization description of the above technical solutions:

[0041] The mounter 43 includes a diamond-shaped telescopic frame 431 , and a patch head 432 is fixed on the bottom of the rhombic telescopic frame 431 . The purpose is to ensure the stability of the telescopic structure of the mounter and the rapidity of shrinkage.

Embodiment 3

[0043] The vacuum chamber sector is 22.5°, and sixteen vacuum chamber sectors form a vacuum chamber. The vacuum chamber sector is about 11m high, 6m wide, 4m thick, and weighs about 65t. Two 22.5° sectors form a pair In a 45° sector, the back of the two D-shaped ring welds on the inner shell is 180-280mm between the inner and outer shells, the width on both sides is fixed at 300mm, and the detection method of the D-shaped closed narrow space with a maximum height of 11m is an example:

[0044] The detection method comprises the following steps:

[0045]Preparation: Before welding, use a marker pen to make eye-catching marks on the inner and outer surfaces of the D-shaped ring weld to ensure that the inner and outer marks are parallel; the film uses AGFA D4 grade fine-grained film in vacuum packaging with customized specifications, and uses pre-exposure technology to number and film the welds. The date and other negative film information is exposed on the film in advance, and a...

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Abstract

The invention discloses a detection device and method for a D type circumferential weld. The detection device comprises a D type guide rail. An X-ray source moving mechanism is arranged on one face ofthe D type guide rail while a negative film distributing mechanism is arranged on the other face. The X-ray source moving mechanism comprises a rail car capable of sliding along the D type guide rail, a six-axis manipulator is arranged on the rail car, an X-ray machine is mounted at the palm end of the six-axis manipulator, the negative film distributing mechanism comprises a climbing rack, a climbing mechanism is arranged on the bottom surface of the climbing rack, an encoder is arranged on the climbing mechanism, a negative film mounter and a video probe are arranged in the middle of the bottom face of the climbing rack, and a supporting wheel is arranged on the top face of the climbing rack. The detection method comprises the following steps: distributing the negative films; and exposing the negative films and the like. The ray detection process is optimized, and the detection device also has the advantages of being low in radiation intensity and high in negative film imaging and meets the radiation strength demand of a vacuum room mounting field and the quality demand of RCC-MR specification on the negative films.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to a testing device and method for a D-shaped girth weld. Background technique [0002] The vacuum chamber based on the future fusion reactor is composed of several such as figure 1 As shown, the vacuum chamber sector 1 with a D-shaped cross-section is formed around ( figure 1 The vacuum chamber sectors shown are 22.5°, sixteen vacuum chamber sectors make up one vacuum chamber), combined with figure 2 , the vacuum chamber sector 1 includes an outer shell 11 and an inner shell 12, and a supporting rib 13 is connected between the outer shell 11 and the inner shell 12. When the vacuum chamber sector 1 is combined into a vacuum chamber, it is inevitable in the process of processing and welding There are certain errors. During the assembly process, the accumulation of these errors will cause the size of the welding end face of the vacuum chamber to fail to meet the req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/04
CPCG01N23/04
Inventor 刘志宏吴杰峰王锐谭勇孙兵张率斌姜北燕
Owner 淮南新能源研究中心