Method for mounting internal assemblies of large container

Abstract

The invention discloses a method for mounting internal assemblies of a large container. The axial end of the large container is provided with a large container opening. The method comprises the following steps: arranging a mounting bracket, assembling internal integral assemblies outside the large container, mounting the internal integral assemblies by using a rolling friction force, positioning the internal integral assemblies and dismantling, wherein the the internal integral assemblies are positioned by using the dead weights of the internal integral assemblies. The method has the technical effects that the workload of the assembling and the welding of the internal assemblies of the large container is reduced, the labor intensity of the workers is lowered, the manufacturing period of the large container is shortened, the work efficiency is improved, the position of welding the internal assemblies of the workers can be unconstrained, the nondestructive inspection work can be done more easily, and the precision of the assembly dimensions of the internal assemblies is improved.

Description

technical field [0001] The invention relates to a method for installing internal components of a large container. Background technique [0002] Mist-water separation reheater (MSR) is a key equipment dedicated to nuclear power steam turbines. The main steam from the nuclear island steam generator expands step by step in the high-pressure cylinder to work, and the pressure and temperature of the steam decrease step by step, leaving the final blade of the high-pressure cylinder The humidity of the exhaust steam is as high as 10% to 14%. Such steam is introduced into the low-pressure cylinder to continue to expand and do work. When it reaches the pressure of the condenser, the humidity of the exhaust steam will increase to 20% to 25%, far exceeding 12% to 15%. The allowable value, in addition to greatly reducing the efficiency of the steam turbine, will also cause serious water erosion of the internal components of the steam turbine, so that the unit cannot work normally. In o...

AI Technical Summary

Problems solved by technology

If a single internal component is assembled and welded into the shell separately, the workload is huge, the labor intensity of the workers is high, the manufacturing cycle is long, the work efficiency is low, and the welding position is limited, the non-destructive testing operation is limited, and the assembly size of the internal components Low precision, it is difficult to meet the requirements of drawing size and manufacturing progress

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