Cooling system of high-temperature gas cooled reactor nuclear power station

Abstract

The invention provides a cooling system of a high-temperature gas cooled reactor nuclear power station, and belongs to the technical field of nuclear power. The cooling system comprises: a steam generator; a main water supply device; an auxiliary steam generating device; a main steam device; and an auxiliary steam receiving device. According to the cooling system of the high-temperature gas cooled reactor nuclear power station, the cooling steam supply pipeline is additionally arranged between the main water supply device and the water supply device between the steam generator, and cooling steam with certain parameters is provided for the steam generator after the reactor is shut down emergently; a cooling steam discharging pipeline is additionally arranged on a steam conveying pipeline of the steam generator; and through the structure, the cooling time of the steam generator is shortened from about 20 days during natural cooling to about 52 hours, so that a reactor can be quickly started after emergency shutdown, and the operation efficiency and the economical efficiency of a power plant are greatly improved.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a cooling system for a high-temperature gas-cooled reactor nuclear power plant. Background technique [0002] As one of the fourth-generation nuclear power units, the high-temperature gas-cooled reactor nuclear power unit has the characteristics of high power generation efficiency, good inherent safety, and simple system, and has a good application prospect. [0003] During normal operation, the primary hot end temperature of the steam generator is 750°C, and the cold end temperature is 250°C; the secondary feedwater temperature is 205°C, and the steam temperature is 566°C. When the reactor is shut down in an emergency, the main helium blower will be stopped quickly and the control rods will drop to realize the shutdown, and the fan baffle and the steam generator inlet and outlet isolation valves will be quickly closed. Then, the steam generator is cooled by its own coolin...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the cooling of equipment such as steam generators in the prior art and only rely on natural cooling. It takes about 20 days before the reactor and steam generator can drop to the temperature required for restarting. Too long, the defect of large economic loss, so as to provide a high temperature gas-cooled reactor nuclear power plant cooling system

Images