Marine heat-pipe-type lead-bismuth reactor waste heat discharge system

Abstract

The invention discloses a marine heat-pipe-type lead-bismuth reactor waste heat discharge system. The system comprises a hot-end heat exchanger, a cold-end heat exchanger and a cooling water pool, a lead-bismuth reactor is internally provided with a lead-bismuth coolant, the hot-end heat exchanger is immersed in the lead-bismuth coolant, an outlet of the hot-end heat exchanger is communicated withan inlet of the cold-end heat exchanger through a hot gas pipe, the cold-end heat exchanger is arranged in the cooling water pool above the hot-end heat exchanger, and an outlet of the cold-end heatexchanger is communicated with an inlet of the hot-end heat exchanger through a return pipe; a heat exchange medium circulates between the cold-end heat exchanger and the hot-end heat exchanger through the hot gas pipe and the return pipe. The system has the advantages that the hot-end heat exchanger and the cold-end heat exchanger are adopted, the two heat exchangers are communicated with each other through the hot gas pipe and the return pipe respectively; the separated heat-pipe-type structure can ensure that when the distance between a cold source and a hot source is large, heat pipe circulation can also be established, and when a reactor is stopped, the decay heat of a reactor core, the latent heat of the coolant and the accumulation heat of equipment are discharged.

Description

technical field [0001] The invention relates to the technical field of waste heat discharge, in particular to a marine heat pipe type lead-bismuth stack waste heat discharge system. Background technique [0002] The waste heat removal system is an important part of the special safety system of the lead-bismuth reactor, which is used for the removal of waste heat from the core under normal operating conditions and accident conditions. The marine lead-bismuth stack is different from the land-based lead-bismuth stack system. The waste heat removal system scheme not only needs to consider the system function and operation mode, but also needs to consider the size and space, weight, marine environment adaptability and local condensation of the lead-bismuth coolant. [0003] Existing marine lead-bismuth piles mostly adopt the primary side independent heat exchanger waste heat discharge method or the secondary side waste heat discharge method, but both of these two waste heat disch...

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Problems solved by technology

[0003] Existing marine lead-bismuth piles mostly adopt the primary side independent heat exchanger waste heat discharge method or the secondary side waste heat discharge method, but both of these two waste heat discharge methods have disadvantages: the waste heat discharge method of the primary side independent heat exchanger, It is not conducive to the size and weight control of the marine lead-bismuth stack; the secondary side waste heat discharge method has the risk of local condensation of the steam generator

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