Modularized seat support for reactor pressure vessel

Abstract

The invention belongs to a support for a reactor pressure vessel of a nuclear power station, and particularly relates to a support which can fix the pressure vessel around the pressure vessel, guard against earthquake and other impact loads and meanwhile allow a part of dimensional change caused by temperature change of the pressure vessel. The support comprises four modularized seats which are uniformly arranged around the reactor pressure vessel, wherein the bottoms of the seats are fixedly arranged on a concrete foundation. The support has the advantage that the interference of a support structure or support foundation concrete and a vessel connecting pipe can be effectively avoided by arranging the independent support seats on the outer wall of the pressure vessel and arranging the modularized seat support structure. By using modularized manufacturing, transportation and mounting and through combined use of a plurality of modules, a main pipeline of the pressure vessel can be kept away; and the support position is arranged close to gravity elevation of the pressure vessel, so that the stability, the safety and the economy of the support are improved.

Description

Technical field [0001] The invention belongs to a support for a pressure vessel of a nuclear power plant reactor, in particular to a support that can fix the pressure vessel around the pressure vessel to prevent earthquakes and other shock loads, and at the same time allows the pressure vessel to change in size due to temperature changes. Background technique [0002] The reactor pressure vessel is one of the key equipment of the entire nuclear power plant reactor and primary circuit system, and an important part of the pressure boundary. In a nuclear power plant, the reactor pressure vessel fixes and supports the internal components, core components, control rod drive mechanism, and the top of the reactor. Structure etc. In the containment, in order to effectively fix the reactor pressure vessel and ensure the safe operation of the entire reactor, a reactor supporting structure must be installed. The weight of the entire nuclear power plant reactor is relatively large. The pres...

AI Technical Summary

Problems solved by technology

Since the support structure is a whole ring, it is required that there should be no radial pipe structure arrangement within a certain height near the support position, and it is not suitable for the support of pressure vessels whose center of gravity of the reactor weight is higher than the center of the main pipe of the pressure vessel.

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