Horizontal support structure for multi-vessel system

Abstract

The invention relates to a horizontal support structure for a multi-vessel system. The multi-vessel system comprises a pressure vessel, steam generators and main pumps. At least two steam generators are centrically symmetrically arranged in the circumference of the pressure vessel. At least two main pumps are centrically symmetrically arranged in the circumference of the pressure vessel. The steamgenerators and the main pumps are alternately arranged in the circumference of the pressure vessel and are distributed in the circumference of the pressure vessel uniformly at intervals; the steam generators are connected with the pressure vessel through first pipelines, and the main pumps are connected with the pressure vessel through second pipelines. The supporting mode of the horizontal support structure is centrally symmetrically arranged, wherein the arrangement method is simple and effective. Through stress decomposition, the stress of main equipment vessels such as the steam generators and the main pumps is balanced, and low-speed displacements such as thermal expansion and thermal displacement of the main equipment vessels such as the steam generators and the main pumps are allowed to occur. Thermal stress can be released in a certain limit to ensure the stable state of the main equipment vessels such as the steam generators and the main pumps.

Description

technical field [0001] The invention relates to the field of nuclear power, and more particularly, to a horizontal support structure for a multi-vessel system. Background technique [0002] In a compactly arranged reactor, the main vessels such as the pressure vessel, the steam generator, and the main pump are all vertical vessels. The steam generator and the main pump are centered on the pressure vessel, and the center is symmetrically arranged on the circumference of the pressure vessel. The steam generator 1. The main pumps are distributed alternately around the pressure vessel and connected to the side of the pressure vessel through pipelines. [0003] The steam generator and the main pump have a large aspect ratio and a high center of gravity, and are the equipment with poor seismic performance in the entire reactor coolant system. When the reactor is running, there will be changes in cold and hot states, and temperature changes will cause thermal expansion and thermal...

AI Technical Summary

Problems solved by technology

The external impact load and alternating load periodically cause the rolling, pitching, heeling, pitching and heaving of the container, which increases the bending moment and stress on the lower support of the container, and there is a risk of the container tipping over. Weak points such as pipe welds are prone to fatigue risks

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