Check operation platform for penetration piece of bottom head of nuclear power plant reactor pressure vessel

Abstract

The invention relates to a check operation platform for a penetration piece of a bottom head of a nuclear power plant reactor pressure vessel. Check equipment is mounted on the operation platform. The check operation platform comprises a profile frame and a driving part, wherein the driving part is arranged on the profile frame and used for driving the check equipment to move in an X direction, a Y direction and a Z direction. X, Y and Z directional screw mechanisms mounted on the profile frame are used for driving operating rods, so that the precise positioning and stable movement for the check equipment are realized. The operation is easy, and the accuracy of check data is ensured.

Description

[0001] technical field [0002] The invention relates to a nuclear power plant pressure vessel scanning device, in particular to a nuclear power plant reactor pressure vessel bottom seal head penetrating part inspection operation platform. [0003] Background technique [0004] The nuclear reactor pressure vessel is one of the most important components of a nuclear power plant, and it is an RCC-M nuclear safety first-level equipment. The quality of the nuclear reactor pressure vessel is the key to ensure the safe operation of the nuclear power system, and it is the only large-scale non-replaceable component in the entire life of the nuclear power plant. In order to determine the quality of nuclear reactor pressure vessels, the inspection specifications and outlines of nuclear power plants and nuclear power plants put forward mandatory requirements for non-destructive testing of the welds and other parts of the reactor pressure vessels, and specify that they should be inspec...

AI Technical Summary

Problems solved by technology

Due to the special structure of the nuclear reactor pressure vessel, the weld seam of the bottom head penetration of the nuclear reactor pressure vessel is more than 10 meters away from the flange surface of the nuclear reactor pressure vessel, and 20 meters away from the convenient bridge on the reactor pressure vessel. Inspection of the penetration of the bottom head of the nuclear reactor pressure vessel It is necessary to send the inspection equipment to the penetrating part of the bottom head of the nuclear reactor pressure vessel through a very long joystick. Due to the need for inspection of the penetrating part of the bottom head of the nuclear reactor pressure vessel, the inspection equipment is required to be able to achieve front and rear, left and right, up and down positioning and stability Therefore, it is necessary to achieve precise positioning and smooth movement of the joystick, but it is very difficult and complicated to implement the positioning and movement of the inspection equipment through a long joystick, and shaking may occur during the movement, which will affect the inspection results

Images