Welding line ray detector of adapter tube and safety end of nuclear reactor pressure vessel

Abstract

The invention discloses a welding line ray detector of an adapter tube and a safety end of a nuclear reactor pressure vessel, which comprises a welding line detector main body, an air bag component, a source delivery device and an air bag support, wherein the air bag component is fixed at one end of the air bag support; the left and right sides of the main body are connected with fixed guide rails respectively; the left and right sides of the air bag support are connected with slide guide rails respectively; the front end part and the rear end part of each guide rail pair are provided with guide wheel sets respectively; each guide wheel set comprises an upper pulley and a lower pulley; and the slide guide rails can be slidably erected between the upper pulley and the lower pulley, and the pulleys mainly bearing the weight of the air bag component adopt eccentric connection, can expand the assembling clearance of the guide rails, make the air bag support operate more stably, and avoid the crawling phenomenon. The welding line ray detector adopts bearing of a plurality of pairs of guide wheel sets and ensures that the load can be dispersed to a plurality of pulleys more evenly so as to ensure the evenness of bearing and stability of motion.

Description

technical field [0001] The invention belongs to the field of detection equipment for nuclear reactor pressure vessels, and in particular relates to radiation detection equipment for welding seams at safety ends of nuclear reactor pressure vessels. Background technique [0002] Nuclear reactor pressure vessels are important components of nuclear reactors. The quality of nuclear reactor pressure vessels is the key to ensuring the normal and safe operation of nuclear power equipment and nuclear power plants. In order to determine the quality of pressure vessels, in the inspection specifications and programs of nuclear power plants and nuclear power plants, the The welds and other parts of the reactor pressure vessel put forward mandatory requirements for non-destructive testing, and specified the pre-service inspection and in-service inspection of the reactor pressure vessel before being put into use and within a certain interval of operation. The results of pre-service inspect...

AI Technical Summary

Problems solved by technology

However, there is still a technical problem to be overcome in this way: due to the large size of the weld detection equipment, the weight of the single airbag assembly is also very large, so if the airbag assembly and the outer frame of the main body are connected by ordinary guide rails, the load-bearing capacity of the front and rear ends of the guide rails will be reduced. Unbalanced, prone to overturning; in addition, when the airbag assembly is moving, the above problems are likely to cause jamming of the guide rail, affecting the stability of the airbag assembly movement

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