Passive containment cooling system and method

Abstract

The invention discloses a passive containment cooling system. The system comprises a containment vessel; an openmouthed condensate water tank which is used for storing condensate water is arranged outside the containment vessel; the bottom of the condensate water tank is provided with a condensing heat exchanger; a pipe-side inlet of the condensing heat exchanger is higher than a pipe-side outlet of the condensing heat exchanger; the pipe-side inlet is communicated with the atmosphere of the containment vessel through a feed pipe; the pipe-side outlet is communicated with a refueling pool or a pit which are arranged inside the containment vessel through a discharge pipe; a filtering discharging device is arranged above the condensing heat exchanger; the filtering discharging device is provided with an air inlet and an air outlet; the filtering discharging device is also provided with an air inlet pipe and an air outlet pipe; one end of the air inlet pipe is connected to the air inlet, and the other end is connected to the feeding pipe; one end of the air outlet pipe is connected to the air outlet, and the other end is communicated with the atmosphere of outside. The invention also discloses a passive containment cooling method of the system. Arrangement of the condensing heat exchanger of the passive containment cooling system is convenient, and heat exchange efficiency is high.

Description

technical field [0001] The invention relates to a safety system of a nuclear power plant, in particular to a passive containment cooling system and method. Background technique [0002] With the maturity of technology and the continuous improvement of the safety of nuclear power plants, the construction of nuclear power plants has gradually become an important energy guarantee for national development. [0003] In current nuclear power plants, the structure of the nuclear reactor is as follows: a reactor chamber is formed in the containment vessel, and a pressure vessel is arranged in the reactor chamber. The pressure vessel is connected with a cold pipe section and a hot pipe section. The steam generator is directly connected to the hot pipe section and the cold pipe section. The coolant is injected through the cold pipe section to perform conventional cooling on the pressure vessel (reactor core), and then discharged through the hot pipe section. [0004] In order to real...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a passive containment cooling system with convenient arrangement of condensing heat exchangers and high heat exchanging efficiency for the deficiencies in the prior art, such as difficult installation of condensing heat exchangers and low heat exchange efficiency. method

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