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Film positioning device for reactor pressure vessel connecting pipe welding seam inspection

A technology for inspection of welding seams and pressure vessels. It is used in reactors, nuclear reactor monitoring, measuring devices, etc. It can solve the problems of difficult cloth, high requirements and high risks, reduce the weight of equipment, facilitate transportation and installation, and ensure complete integrity. sexual effect

Pending Publication Date: 2021-12-07
CHINA NUCLEAR POWER OPERATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a film positioning device for reactor pressure vessel nozzle weld inspection, which can solve the problems of difficulty, high risk, and high requirements for the site layout of reactor pressure vessel inlet and outlet weld seams. Can be used for other types of pipe weld radiographic inspection

Method used

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  • Film positioning device for reactor pressure vessel connecting pipe welding seam inspection
  • Film positioning device for reactor pressure vessel connecting pipe welding seam inspection
  • Film positioning device for reactor pressure vessel connecting pipe welding seam inspection

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] The invention provides a film positioning device for reactor pressure vessel nozzle weld inspection, which includes a film fork 2 and a film bracket. Such as figure 1 As shown, the film fork 2 and the film cassette 1 form an integral body, and the film bracket and the weld to be inspected form another integral body. Through the quick connection of the film fork 2 and the film bracket 2, the connection between the film cassette and the weld to be inspected is finally realized. precise positioning between.

[0024] The profile of film fork 2 is " not " font, is the weldment that two vertical bars and a cross bar form. The ends of the two vertical rods arranged in parallel form a semicircle so that they can be smoothly inserted into the back chute of the special cassette without damaging the cassette. The crossbar of the film f...

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Abstract

The invention discloses a film positioning device for reactor pressure vessel connecting pipe welding seam inspection, the device comprises a film fork and a film bracket, the film fork and a film cassette form an integral body, the film bracket and an inspected welding seam form another integral body, and the film fork and the film bracket are quickly connected, and finally, accurate positioning between the film cassette and the inspected welding seam is realized. The beneficial effects of the device are that the rubber gasket is pasted on the inner side of the bracket to protect the surface of the inspected part and increase the friction force. On the premise of ensuring sufficient rigidity and strength, the weight of the equipment is reduced. The whole bracket can be split into two semicircular parts, and the two ends of the bracket are connected through the detachable hinge and the quick fastening device respectively, so that the integrity of the bracket during use is guaranteed, and transportation and installation in a narrow space can be facilitated.

Description

technical field [0001] The invention belongs to an industrial ray inspection device for pipe girth welds, in particular to a film positioning device for pipe weld inspections. Background technique [0002] The reactor pressure vessel is an important equipment used by nuclear power plants to fix and contain the reactor core and reactor internals. The welds of the inlet and outlet nozzles of the reactor pressure vessel are located in the area close to the core fission zone, and the operating conditions are extremely complicated. Therefore, it is regarded as a key inspection object in the in-service inspection specifications of nuclear power plants at home and abroad. Before the radiographic inspection, the inspector needs to arrange the film cassette on the outer surface of the weld. First confirm the position and direction of the weld to be inspected, and then use lead numbers and lead wire to mark the inspection area of ​​the weld to be inspected. Then place multiple image...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/017G01N23/04
CPCG21C17/017G01N23/04G01N2223/30Y02E30/30
Inventor 张亮左畅张志义高飞陈小春
Owner CHINA NUCLEAR POWER OPERATION TECH
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