Multifunctional inspection equipment of nuclear reactor pressure vessel nozzle

Abstract

The invention relates to a multifunctional inspection equipment of a nuclear reactor pressure vessel nozzle, comprising a bracket body, a scanning device and movable supporting legs, wherein the scanning device comprises a fixed disk, a rotating disk, ultrasonic probe racks and a camera arranged on the rotating disk, the rotating disk is coaxial to the fixed disk and is connected with the fixed disk in a rotating mode, the ultrasonic probe racks are installed on the rotating disk and are distributed along the circumference of the rotating disk; the movable supporting legs are dismountablely arranged on different positions of the bracket body according to the position to be inspected of the nozzle so as to realize ultrasonic inspection of the safe end and nozzle connection welding line, the safe end and main pipeline connection welding line and nozzle and barrel welding line; the camera simultaneously collects the video inspection information of the inner surface of the safe end area; when the welding line of the nozzle and the barrel is inspected, the camera simultaneously obtains the video inspection information of the inner surface of the nozzle section area; the video inspection information collected by the camera is combined with the scanning result of the ultrasonic probe to ensure the accuracy and the reliability of the scanning result and realize the multifunctional inspection of the equipment.

Description

technical field [0001] The invention relates to the field of testing equipment for in-service / pre-service inspection of nuclear power plant reactor pressure vessels, in particular to ultrasonic and video inspection equipment for the pressure vessel water outlet and water inlet nozzles. Background technique [0002] The nuclear reactor pressure vessel is one of the most important components of a nuclear power plant. It is used to fix, support and contain the core and all reactor internals. It is the only large-scale component that cannot be replaced during the entire life of the nuclear power plant. The quality of the nuclear reactor pressure vessel is the key to ensure the normal and safe operation of the nuclear power system. Figure 13 The shown nuclear reactor pressure vessel has a main body of a cylinder 101, the upper part of the cylinder 101 is connected with a hemispherical upper head (not shown in the figure) and a flange 102 through a bolt assembly, and the lower par...

AI Technical Summary

Problems solved by technology

The inspection equipment in the prior art, on the one hand, has a large volume and occupies more resources of the nuclear island; Video inspection of the inner surface of the surfacing layer cannot be carried out without a video device, and the inspection range that can be completed is limited, which poses certain safety hazards to the safe operation of the pressure vessel

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