Reactor air-cooled waste heat removal system with pressure vessel of double-layer structure

Abstract

The invention discloses a reactor air-cooled waste heat removal system with a pressure vessel of a double-layer structure. The reactor air-cooled waste heat removal system comprises an inner-layer main pressure vessel, an outer-layer auxiliary pressure vessel, a thermal insulation layer and a plurality of waste heat removal assemblies, the outer-layer auxiliary pressure vessel is connected to the outer wall of the inner-layer main pressure vessel in a sleeving mode, a cavity is formed between the outer-layer auxiliary pressure vessel and the inner-layer main pressure vessel, and the cavity is divided into a plurality of interlayer cavities; the thermal insulation layer sleeves the outer wall of the outer-layer auxiliary pressure container; and one interlayer cavity corresponds to one waste heat removal assembly. By means of the system, the problem of high-temperature aging of concrete in the cavities of the pressure container can be solved.

Description

technical field [0001] The invention belongs to the field of nuclear reactor pressure vessels and waste heat discharge, and relates to a reactor air-cooled waste heat discharge system with a double-layer structure pressure vessel. Background technique [0002] The current third and fourth generation advanced reactors require a safety-level passive waste heat removal system, which is used to remove waste heat without relying on active equipment in an emergency, thereby improving the failure safety of the reactor. [0003] The safety level passive waste heat removal system adopted by the pressurized water reactor is to draw the coolant from the heat pipe section of the primary circuit for cooling and then return to the heat pipe section of the primary circuit. Since the passive waste heat removal system of the PWR is connected to the primary circuit, the pressure of the primary circuit of the PWR generally exceeds 15MPa, and the heat transfer tube requires a high pressure rati...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide an air-cooled waste heat removal system for a reactor with a double-layer structure pressure vessel, which can solve the problem of high-temperature aging of the concrete in the pressure vessel chamber

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