A passive waste heat removal system for high temperature heat pipe stack

Abstract

The invention relates to a passive residual heat discharge system for a high-temperature heat pipe stack, belonging to the technical field of nuclear power plant safety systems. Including passive waste heat removal heat exchanger, high temperature heat pipe, transverse partition and rising channel; passive waste heat removal heat exchanger is a cylindrical heat exchanger, inside the pressure vessel, on the upper part of the reactor core, it can be set on the main heat exchange The upper or lower part of the heat exchanger; a plurality of high-temperature heat pipes are arranged inside the passive waste heat discharge heat exchanger; the transverse partition divides the interior of the passive waste heat heat exchanger into upper and lower layers; the ascending channel and the top of the passive waste heat discharge heat exchanger The invention realizes the passive waste heat discharge of the high temperature heat pipe stack, uses the high temperature heat pipe as the heat transfer pipe of the passive waste heat discharge heat exchanger, and relies on the two-phase natural circulation in the high temperature heat pipe and the passive waste heat discharge exchange under accident conditions. The natural circulation of the working medium in the heater brings the decay heat of the reactor core into the environment and realizes the long-term cooling of the reactor.

Description

technical field [0001] The invention relates to a passive residual heat discharge system for a high-temperature heat pipe stack, belonging to the technical field of nuclear power plant safety systems. Background technique [0002] The high temperature heat pipe reactor is a new type of reactor device that uses the two-phase natural circulation characteristics of alkali metals in the high temperature heat pipe to transfer heat from the core to the energy conversion system. The high-temperature heat pipes arranged inside the reactor provide a new and unique way to cool the core, and realize the transfer of reactor heat from the evaporation section to the condensation section outside the core in a continuous isothermal vapor / liquid internal flow. The high temperature heat pipe has high heat transfer efficiency, small pressure loss, safety and reliability, and can increase the heat exchange area of ​​the reactor core, realizing the continuous heat dissipation of the core, and ha...

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Problems solved by technology

Most of these passive safety systems are designed according to the pressurized water reactor nuclear power plant, and the structure of the high temperature heat pipe reactor is very different from that of the pressurized water reactor nuclear power plant. Core waste heat

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