Spent fuel tank passive after-heat removing system based on water cooling heat pipes

Abstract

The invention provides a spent fuel tank passive after-heat removing system based on water cooling heat pipes. The spent fuel tank passive after-heat removing system based on the water cooling heat pipes comprises a heat pipe evaporation section, a heat pipe condensation section, a heat pipe descending section, a water dropping liquid distributor, a safety shell top water tower, a spent fuel tank, a spent fuel component and a baffle, wherein the baffle is arranged in the spent fuel tank, and the bottom of the baffle is provided with a baffle hole; the spent fuel component is arranged in the spent fuel tank and is positioned on the inner side of the baffle; the heat pipe evaporation section is arranged between the baffle and the spent fuel tank, and the outlet part of the heat pipe evaporation section extends out of the spent fuel tank; the heat pipe condensation pipe is arranged at the upper part outside the spent fuel tank, and the inlet of the heat pipe condensation section is connected with the outlet of the heat pipe evaporation section; the heat pipe descending section is arranged at the outer side of the spent fuel tank, and the inlet of the heat pipe descending section is connected with the outlet of the heat pipe condensation pipe; the outlet of the heat pipe descending section is connected with the inlet of the heat pipe evaporation section; the water dropping liquid distributor is arranged above the heat pipe condensation section, and is connected with the safety shell top water tower. The spent fuel tank passive after-heat removing system based on the water cooling heat pipes has the advantages of high reliability, safety hazard eradication and simple structure.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant safety, and in particular relates to a spent fuel pool passive waste heat exporting system based on a water-cooled heat pipe that utilizes a water-cooled heat pipe to efficiently extract waste heat from a spent fuel pool in a nuclear power plant. Background technique [0002] Ensuring the safe operation of nuclear power plants is one of the key factors affecting the design of nuclear power plants. At present, the exhaust heat of the spent fuel pool is mainly realized through the pump-driven cooling system. The water flowing from the spent fuel pool reaches the external heat exchanger, where it is cooled by cooling water, thereby removing heat. Because this method relies on power to drive the pump, once the kinetic energy equipment fails, it will cause a safety accident. Fukushima Nuclear Power Plant had a spent fuel pool safety accident caused by the failure of active equipment. Ther...

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Problems solved by technology

Since this method relies on power to drive the pump, once the kinetic energy equipment fails, it will cause a safety accident

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