Passive residual heat removal system for high temperature gas cooled reactor

A technology of passive waste heat and high-temperature gas-cooled reactors, which is applied in the fields of reducing greenhouse gases, reactors, and nuclear power generation. It can solve problems such as failures, and achieve the effects of slow accident process, good reliability and safety, and low failure probability.

Inactive Publication Date: 2012-01-25
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the AP1000 advanced pressurized water reactor designed in the United States is designed as a passive waste heat removal system, which only relies on gravity to start and does not re

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  • Passive residual heat removal system for high temperature gas cooled reactor
  • Passive residual heat removal system for high temperature gas cooled reactor
  • Passive residual heat removal system for high temperature gas cooled reactor

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Embodiment Construction

[0027] A high-temperature gas-cooled reactor passive waste heat removal system proposed by the present invention will be described in detail below with reference to the drawings and embodiments.

[0028] The invention provides a high-temperature gas-cooled reactor waste heat removal system based on a passive safety design concept. The operation of the system does not require the action of any active parts and electric valves, nor does it need to be started or switched after the reactor is shut down. The trap—atmospheric, has the characteristics of simple structure, convenient installation and maintenance, and low failure rate. It can simultaneously meet the safety requirements of the cabin cooling function of the high temperature gas-cooled reactor during normal operation and the waste heat discharge function after shutdown.

[0029] The present invention can be designed as multiple sets of sequence redundancy to improve security. The structure of each sequence is as follows ...

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Abstract

The invention relates to the technical field of safety facilities of a reactor, and discloses a passive residual heat removal system for a high temperature gas cooled reactor. The system comprises a plurality of sets of independent residual heat removal sequences, wherein each set of residual heat removal sequence comprises a water cooled wall (1), an air cooler (5), an air cooling tower (6), a reactor pressure vessel (7) and a reactor cabin (8); the water cooled wall (1) is positioned in the reactor cabin (8) and encircles the reactor pressure vessel (7); the installation position of the air cooling tower (6) is higher than that of the water cooled wall (1); and the air cooler (5) is arranged in the air cooling tower (6). A simple passive residual heat removal system is designed by utilizing a passive safety design concept and a little equipment, is only dependent on natural circulation when operated, is not required to be driven by any external force, and is provided with respective independent redundant circulation loops, so that the system is prevented from failing due to the failure of an active part, and the operation safety of the reactor is improved.

Description

technical field [0001] The invention relates to the technical field of reactor safety facilities, in particular to a passive residual heat discharge system for a high-temperature gas-cooled reactor. Background technique [0002] After the nuclear reactor is shut down, due to the remaining fission in the core and the decay of fission products, the residual heat generated is still considerable for a long period of time, and it needs to be carried out to the final heat through a specially designed safety-level waste heat removal system. trap. Otherwise, heat accumulation and temperature rise in the reactor may lead to damage or even melting of fuel elements, thus causing serious nuclear safety accidents due to radioactive release. This is one of the most important safety concerns in nuclear reactor design. [0003] Different from light water reactors, high-temperature gas-cooled reactors use high-temperature-resistant ceramic-coated granular fuel elements, graphite with large...

Claims

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Application Information

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IPC IPC(8): G21C15/18
CPCY02E30/33Y02E30/30
Inventor 张丽李晓伟吴莘馨郑艳华何树延吴宗鑫张作义
Owner TSINGHUA UNIV
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