Rapid and safe reactor shutdown system of nuclear power plants

A technology for shutdown system and nuclear power plant, used in nuclear power generation, nuclear engineering, reactors, etc., can solve the problem of uncontrollable core reactivity, and achieve the effect of mature theoretical foundation and simple configuration

Inactive Publication Date: 2017-06-23
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ACP100+ intends to adopt the unregulated boron load-following operation mode, and the reactivity control adopts burnable poison rods and control rods. When the expected operation event occurs and is accompanied by the expected transient state (ATWS) that fails to emergency shutdown, the core reactivity will not be able to control

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  • Rapid and safe reactor shutdown system of nuclear power plants

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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] Such as figure 1 As shown, the nuclear power plant rapid safety shutdown system of the present invention includes two identical series, and each series has 100% capacity. Each series includes: a delivery pump, a storage tank, a safety valve and corresponding connecting pipelines and valves; the suction port of the delivery pump is connected to the bottom of the storage tank, and the inlet of the safety valve is connected to the outlet of the delivery pump. The outlet of the valve is connected with the storage tank, and the outlet of the transfer pump is connected with the pressure vessel. The two series are connected by a bridge tube, and the bridge tube is provided with a bridge tube connecting valve.

[0013] The storage tank is a device used to store a solution of high-concentration neutron poisons, and the outlet pipeline of the ...

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Abstract

The invention belongs to the field of small-sized pressurized water reactor nuclear power plant accident treatment technology, and concretely relates to a rapid and safe reactor shutdown system of nuclear power plants. The system comprises two same systems, and each system comprises a transfer pump, a storage tank and a safety valve; a suction inlet of the transfer pump and the bottom of the storage tank are connected, an inlet of the safety valve and an outlet of the transfer pump are connected, the outlet of the safety valve is connected to the storage tank, and an outlet of the transfer pump is connected to a pressure vessel; the two systems are connected by a bridge pipe, and the bridge pipe is provided with a bridge pipe communicating valve. Outlet pipelines of the storage tanks are provided with filters. The system can be used for independently injecting a solution containing high-concentrated neutron poison in a reactor core, and the core is brought into a subcritical state and is kept at a certain subcritical degree.

Description

technical field [0001] The invention belongs to the technical field of accident response in small pressurized water reactor nuclear power plants, and in particular relates to a rapid and safe shutdown system of nuclear power plants. Background technique [0002] According to the "Twelfth Five-Year Plan" Newly-built Nuclear Power Plant Safety Requirements issued by the National Nuclear Safety Administration, nuclear power plants must have reliable safety shutdown means, and the shutdown means must be composed of at least two different and independent systems. Provide variety. ACP100+ plans to adopt the unregulated boron load-following operation mode, and the reactivity control adopts burnable poison rods and control rods. When the expected operation event occurs and is accompanied by the expected transient state (ATWS) that fails to emergency shutdown, the core reactivity will not be able to control. In order to meet the requirements of relevant regulations and improve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C7/04G21C9/02
CPCG21C7/04G21C9/02Y02E30/30
Inventor 余小权曾畅于德勇赵禹隋海明任云张晓玉
Owner NUCLEAR POWER INSTITUTE OF CHINA
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