Nuclear power station containment antiknock pressure relief system

Abstract

The invention provides a nuclear power station containment antiknock pressure relief system, which belongs to the technical field of nuclear power containment protection. The system comprises an antiknock pressure relief system and a containment, wherein the containment is formed by a dome, a barrel and a basic bottom plate; the antiknock pressure relief system is embedded into the center of the dome, and comprises a recovery air bag, a buffer spring, a slide rail, a reset spring, a valve element and a pressure sensor; the recovery air bag is arranged on the outermost side of a pressure reliefdevice; when the pressure sensor monitors that the internal pressure of the containment exceeds a threshold value, the antiknock pressure relief system is started, the gas pressure upwards pushes thevalve element, the valve element moves upwards along the slide rail, the buffer spring is pressed, the reset spring is pulled, and when the position of the valve element exceeds the position of a gashole, gas in the containment leaks outwards into the recovery air bag; when the gas pressure intensity in the containment is stable, the valve element slides downwards along the slide rail until arriving at a balance position. The nuclear power station containment antiknock pressure relief system provided by the invention can prevent the whole containment from being damaged by excessive pressure,so that radioactive substances are prevented from being leaked.

Description

technical field [0001] The invention belongs to the technical field of nuclear power containment protection, in particular to an anti-explosion pressure relief system for a containment of a nuclear power plant. Background technique [0002] The containment is the core structure of nuclear power engineering, and it is the last barrier against nuclear leakage accidents caused by extreme conditions such as high temperature, high pressure, implosion, and external violent terrorist attacks caused by internal nuclear reactor dehydration accidents. In the Chernobyl nuclear power accident, the Three Mile Island nuclear power accident and the Fukushima nuclear power accident in Japan, the role that the containment should have has been fully demonstrated. [0003] The current measures for high temperature, high pressure and explosion accidents caused by internal water loss and external explosion shocks are mainly through enhancing the ability of the containment to resist disasters. H...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high pressure inside the containment caused by the loss of water accident of the nuclear power plant and the failure of the containment caused by the explosion. In order to prevent the leakage of nuclear radiation, an anti-explosion pressure relief system for the containment of the nuclear power plant is proposed

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