Method for installing main loop system in nuclear island of nuclear power plant

Abstract

The invention relates to an installation method of an inner structure in a nuclear island of a nuclear power pant and provides a method for installing a main loop system in the nuclear island of the nuclear power plant, which aims at solving the problems of long installation period and high installation cost of the main loop system in the nuclear island of the nuclear power plant. The method comprises the following steps of: placing main equipment to be installed on a support device, wherein the main equipment is a pressure container, a vapor generator or a main pump case; determining arrangement positions of measurement points and the number of the measurement points arranged in the arrangement positions; arranging test points and common points; collecting coordinate data of the arranged measurement points; processing the collected coordinate data of the measurement points, establishing a body coordinate system of the main equipment to be established, and calculating to obtain the installation specification of a connection tube; and processing the connection tube and installing the main loop system in the nuclear island of the nuclear power plant. Therefore, the connection tube only needs to be processed and hoisted for once to complete the installation of the main loop system in the nuclear island of the nuclear power plant, so that the installation rate is improved, the installation time is shortened, and the installation cost is reduced.

Description

technical field [0001] The invention relates to a method for installing the internal structure of a nuclear island in a nuclear power plant, in particular to a method for installing a main loop system in the nuclear island of a nuclear power plant. Background technique [0002] The main circuit system in the nuclear island of a nuclear power plant includes main equipment installed in the nuclear island, such as pressure vessels, steam generators, main pump casings, and connecting pipes used to connect various main equipment and make them communicate with each other. [0003] At present, when installing the main circuit system in a nuclear power plant, the main equipment of the nuclear island, such as pressure vessels, steam generators, and main pump casings, are usually installed in their design positions in the nuclear island according to the design drawings, and then the connecting pipes It is placed between each main equipment, and the port of the connecting pipe and the ...

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Problems solved by technology

[0004] In order to solve the problems of long installation period and high installation cost of the main loop system in the nuclear island of the nuclear power plant in the prior art, the present invention proposes a method for installing the main loop system in the nuclear island of the nuclear power plant, which is characterized in that the installation method includes the following step:

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