Hoisting mechanism of nuclear reactor pressure vessel inspection mechanism and implementation method

Abstract

The invention belongs to the technical field of nuclear reactor pressure vessel nondestructive inspection and maintenance and in particular relates to a hoisting mechanism of a nuclear reactor pressure vessel inspection mechanism and an implementation method, aiming at realizing remote automatic hooking and automatic unhooking of nuclear reactor pressure vessel inspection equipment, improving theutilization rate of an annular crane and reducing the radiation risks of operators. The hoisting mechanism is characterized by comprising a locking rod, a hoisting mechanism main body, an air cylinderseat, an air cylinder and side guide plates; a hoisting hole connected with a hoisting hook is processed in the upper part of the hoisting mechanism main body; a guide groove matched with a pressurevessel inspection device hoisting part is processed in the lower part of the hoisting mechanism main body; a locking pin connection hole is processed in the guide groove; the air cylinder is connectedwith the hoisting mechanism main body through the air cylinder seat; an air cylinder rod is provided with a locking rod; the two side guide plates are mounted at two sides of the guide groove below the hoisting mechanism main body.

Description

technical field [0001] The invention belongs to the technical field of nondestructive inspection and maintenance of nuclear reactor pressure vessels, and in particular relates to a hoisting mechanism and an implementation method of a nuclear reactor pressure vessel inspection device. Background technique [0002] The nuclear reactor pressure vessel is a closed container used to house the nuclear reactor and withstand its huge operating pressure, also known as the reactor pressure vessel. Reactors used in nuclear power plants mainly include light water reactors, heavy water reactors, gas-cooled reactors and fast reactors. Since the pressure vessel contains the active area of ​​the reactor and other necessary equipment, its structural form varies with different reactor types. [0003] The nuclear reactor pressure vessel is located in the center of the reactor building. The design mainly considers the high pressure and high temperature of the primary circuit coolant, the main ...

AI Technical Summary

Problems solved by technology

During the in-service inspection, due to the influence of the radiation environment, the operator cannot operate for a long time on the flange surface of the pressure vessel and the operation bridge above the pressure vessel when the equipment is installed and disassembled, and the inspection equipment is far away from the mobile table bridge.

When using the ring crane to hoist the inspection equipment, the quick and automatic hooking and unhooking of the inspection equipment cannot be realized, which affects the use of the ring crane

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