Primary side passive residual heat removal system for nuclear reactor

Abstract

The invention discloses a primary side passive residual heat removal system for a nuclear reactor. The primary side passive residual heat removal system comprises the reactor, a cooling water tank, an inlet pipeline, an outlet pipeline, a heat exchanger and a control unit; the heat exchanger is located in the cooling water tank;one end of the inlet pipeline is connected with the reactor, and the other end of the inlet pipeline penetrates through the cooling water tank to be connected with an inlet of the heat exchanger; one end of the outlet pipeline is connected with an outlet of the heat exchanger and penetrates through the cooling water tank to be connected with the reactor; the inlet and outlet of the heat exchanger are higher than the outlet and outlet connected with the inlet pipeline and the outlet pipeline of the reactor; an isolating valve A is arranged at the part of the outlet pipeline positioned between the cooling water tank and the reactor; the control unit is connected with the isolating valve A; a pressure stabilizer is also provided and used for monitoring a reactor pressure value and transmitting the reactor pressure value to the control unit; and when the reactor is shut down and the pressure value of the reactor is reduced to a set value, the isolating valve A is opened to form a first heat exchange circulation loop. Heat removal can be achieved in a passive mode, external force is not needed, and the system can still be used under the condition that a power source is lost.

Description

technical field [0001] The invention relates to the technical field of nuclear reactor safety, in particular to a primary side passive waste heat discharge system for nuclear reactors. Background technique [0002] During a nuclear reaction, emergency shutdowns may occur for a number of reasons. The export of decay heat after nuclear reactor shutdown is a key issue related to the safety of nuclear reactors, especially when a ship-wide power failure occurs in a marine reactor, the reactor loses its active waste heat removal system. If the core decay heat cannot be safely exported, it may It will lead to serious accidents such as core melting. Therefore, other relevant safety systems need to be set up to solve the problem of deriving core decay heat under the condition of whole ship power failure or loss of other heat conduction paths. Moreover, compared with land-based reactors, the cabin space of marine reactors is limited, and how to use the limited space to maximize heat...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to utilize the limited space of the cabin to achieve the maximum heat dissipation, and to solve the problem of deriving the core decay heat under the condition that the whole ship is powered off or other heat conduction paths are lost. The purpose is to provide a nuclear reactor The passive waste heat removal system on the primary side solves the technical problem of the decay heat export after the shutdown of the nuclear reactor

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