Vacuum enclosure for detecting nuclear power station leakage and detection method of nuclear power station leakage

Abstract

The invention provides a vacuum enclosure for detecting nuclear power station leakage, comprising a bottom wall arranged at the bottom and side walls, wherein the side walls are vertical to the bottom wall and extend from the top of the bottom wall to the vacuum enclosure; the side walls comprise a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the first side wall and the third side wall are oppositely arranged and have the same shape, and the second side wall and the fourth side wall are oppositely arranged and have the same shape; the top of each sidewall is respectively provided with a turnup corresponding to the side wall thereof; each turnup is end to end to surround the top opening of the vacuum enclosure to form a contact surface of a part to be detected; and the tops of the first side wall and the third side wall are of a V shape, and the angel of the V shape and the angle of a specific welding line to be detected are generally complementary. The invention provides the vacuum enclosure for detecting nuclear power station leakage, which is matched with the shape of the welding line of the specific position of the nuclear power station, and a corresponding detection method to ensure overall and effective implementation of vacuum leakage detection work.

Description

technical field [0001] The invention relates to a nuclear power plant leak detection vacuum cover and a nuclear power plant leak detection method, in particular to a nuclear power plant leak detection vacuum cover and a nuclear power plant leak detection method for detecting whether there is a leak hole in a weld seam at a specific position. Background technique [0002] The use of vacuum hoods to detect welds in specific parts of nuclear power plants is one of the non-destructive testing methods in the field of non-destructive testing technology in the nuclear industry, and is an important detection method for weld quality control in the construction of nuclear power plants. The vacuum leak detection method is used to ensure that the welds of nuclear safety equipment do not leak due to welding quality defects, resulting in leakage of radioactive substances, and avoiding economic losses and harm to the surrounding environment and the public. [0003] The steel lining of nucl...

AI Technical Summary

Problems solved by technology

Among them, important construction welding points such as the truncated cone of the bottom plate, the central boss, and the corner joints in the on-site installation of the stainless steel cladding pool of the KX factory building, due to the particularity of the welding method and the welding position, when performing vacuum leak detection , the use of conventional vacuum testing equipment produced by the manufacturer cannot form close contact with the weld, and the establishment of the vacuum required for testing cannot be achieved in the conventional vacuum cover, so that effective testing cannot be implemented

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