Pressurized water reactor nuclear power plant circuit over-pressure protection and pressure-relief system

Abstract

The invention relates to the technical field of pressurized water reactor nuclear power plant accident treatment, and specifically discloses a pressurized water reactor nuclear power plant circuit over-pressure protection and pressure-relief system, which comprises a pressurizer, a pressure-relief box pipeline, a pressurizer safety valve, a plurality of pneumatic separation valves and a plurality of electrical separation valves, wherein the pipeline positioned on the pressurizer and connected with the pressure-relief box pipeline is provided with the pressurizer safety valve, the pipeline for connecting the pressurizer and the pressure-relief box pipeline is further provided with three parallel connection branches, the first branch comprises the electrical separation valve A and the pneumatic separation valve A, the electrical separation valve A and the pneumatic separation valve A are connected in series, the second branch comprises the electrical separation valve B and the pneumatic separation valve B, the electrical separation valve B and the pneumatic separation valve B are connected in series, the third branch comprises the electrical separation valve C and the pneumatic separation valve C, and the electrical separation valve C and the pneumatic separation valve C are connected in series. With the pressurized water reactor nuclear power plant circuit over-pressure protection and pressure-relief system, the over-pressure protection and pressure-relief function can be performed under working conditions such as normal operation of nuclear power plants, basis accidents and severe accidents so as to maintain the safe status of the reactor.

Description

technical field [0001] The invention belongs to the technical field of accident response in pressurized water reactor nuclear power plants, and in particular relates to an overpressure protection and pressure relief system for a primary circuit of a pressurized water reactor nuclear power plant. Background technique [0002] At present, the advanced pressurized water reactor nuclear power plant needs to consider setting up devices for primary circuit overpressure protection, pressure relief, rapid pressure relief under severe accident conditions, low temperature overpressure protection, and system "charging-discharging" functions. However, the existing primary circuit overpressure protection and pressure relief systems of PWR nuclear power plants at home and abroad cannot fully meet the above requirements. Contents of the invention [0003] The purpose of the present invention is to provide a primary circuit overpressure protection and pressure relief system of a pressuriz...

AI Technical Summary

Problems solved by technology

However, the existing primary circuit overpressure protection and pressure relief systems of PWR nuclear power plants at home and abroad cannot fully meet the above requirements.

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