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Nuclear power station steel lining modularized construction method

A construction method and technology of steel lining, applied in industrial buildings, buildings, building structures, etc., can solve the problems of long aerial work, small operation space, high safety risks, etc., to improve construction economy, improve the degree of molding, The effect of reducing security risks

Active Publication Date: 2012-01-25
CHINA NUCLEAR IND HUAXING CONSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This construction method has disadvantages such as complicated and repetitive installation process, difficulty in controlling the overall accuracy of steel lining installation, long time for high-altitude operations, high safety risks, and long time occupation of the critical path of the project.
[0004] Practice has proved that during the construction of nuclear power plants, the steel lining construction is carried out according to the working method of block hoisting, which is a full-time high-altitude operation, which occupies a long time in the critical path of engineering construction.
In addition, this construction method has a small operating space during construction, and cannot effectively use construction tools for precision calibration

Method used

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  • Nuclear power station steel lining modularized construction method
  • Nuclear power station steel lining modularized construction method
  • Nuclear power station steel lining modularized construction method

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Embodiment Construction

[0026] Specific embodiments of the present invention will be described below with reference to the drawings. The nuclear power plant steel lining modular construction of this embodiment is carried out according to the following steps:

[0027] 1. Prefabricated lining module - steel lining in the shape of a tank as a whole (see Figure 7 ) is divided into multi-level ring-shaped lining modules with a height of 5.75m. After prefabrication in the workshop, the assembly site is selected to make it into lining modules of all levels.

[0028] 2. Manufacture hoisting grid—such as figure 1 and figure 2 As shown, the node spheres 1 with connecting screw holes are distributed according to the inner and outer circles and the upper and lower layers, and the two node spheres that are adjacent to the left and right, adjacent to the upper and lower, and adjacent to the inner and outer sides are respectively passed through the terminal with external threads. Horizontal, vertical and longi...

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Abstract

The invention relates to a nuclear power station steel lining modularized construction method, and belongs to the technical field of nuclear power station stack type steel lining construction. The method comprises the following steps of: prefabricating a lining module; manufacturing a lifting wire frame; setting a lifting point; setting a hanging point; hanging and connecting; lifting in place; and laminating and welding step by step, namely laminating a previous annular lining module on a next annular lining module, and welding into an integral pot-shaped steel lining. After the method is adopted, since the forming degree of the steel lining at a prefabrication stage is improved, the construction period of the mounting stage can be obviously shortened, the construction efficiency is improved, the safety risk is reduced, and the aim of improving the construction economy of a nuclear power station is fulfilled.

Description

technical field [0001] The invention relates to a modular construction method for steel lining of a nuclear power plant, in particular to a construction method for hoisting a nuclear power plant steel lining cylinder in layers and in full circle, and belongs to the technical field of nuclear power plant stack steel lining construction. Background technique [0002] As a steel barrier for nuclear power plants to prevent nuclear leaks, steel linings play a very important role in reducing nuclear safety risks. [0003] In the construction of nuclear power plants that have been built or are currently under construction, steel linings for nuclear power plants are hoisted and installed in blocks. This construction method has disadvantages such as complicated and repetitive installation process, difficulty in controlling the overall accuracy of steel lining installation, long time for high-altitude operations, high safety risks, and long time occupation of the critical path of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/00E04G21/14E04H5/02
Inventor 陈明国郁万里
Owner CHINA NUCLEAR IND HUAXING CONSTR
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