Method for hoisting core and shell of high temperature gas cooled reactor

Abstract

The invention relates to the field of construction of a nuclear power station, provides a method for hoisting a core and a shell of a high temperature gas cooled reactor and aims at reducing construction difficulty of hoisting of the core and shell of the high temperature gas cooled reactor, improving hoisting quality and construction safety. The method comprises the following steps: fixedly arranging a reversed support as well as a bottom bearing support and an upper fixing inclined support; reversing the core and the shell of the reactor into a vertical state by adopting a reversing sling provided with an angle pointer; removing a hoop at the tail, then hoisting and conveying the core and the shell of the reactor on the bottom bearing support, and fixing with the upper fixing inclined support; removing a hoop at the head, and hoisting away from the core and the shell of the reactor; removing a hoisting cover plate from the core and the shell of the reactor, and hoisting the hoistingcover plate away from the core and the shell of the reactor; monitoring a strain value of an adjustable pull rod, and adjusting length of the adjustable pull rod according to measurement data; and mounting a limiting component at an upper opening of a pressure container, and hoisting the core and the shell of the reactor into the pressure container to be in position, so that hoisting is completed.By adopting the method provided by the invention for hoisting the core and the shell of the high temperature gas cooled reactor, the construction difficulty is low, and the hoisting quality and safety are high.

Description

Technical field [0001] The invention relates to the field of nuclear power plant construction, in particular to a method for hoisting a core shell of a high-temperature gas-cooled reactor. Background technique [0002] The reactor core shell of a high temperature gas-cooled reactor is one of the core components of a nuclear power plant and an important guarantee for the safe operation of the nuclear power plant reactor. [0003] The core shell is installed inside the cylinder of the pressure vessel of the nuclear power plant reactor, and is used for loading metal reactor internals, ceramic reactor internals, and monitoring and control systems in the pressure vessel. After the core shell is transported to the construction site of the nuclear power plant, a large number of accessory installations, removals, rust prevention oil removal, and drilling can be interspersed, and the core shell is turned over to the erect state and then introduced into the pressure vessel barrel in vivo. ...

AI Technical Summary

Problems solved by technology

However, due to the large size of the core shell, it is difficult to turn over, and when the core shell is introduced into the cylinder of the pressure vessel, the installation space is narrow, the construction is difficult, and collisions and scratches are prone to occur, which affects the hoisting of the core shell Quality and Construction Safety

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