Abstract: A design method for a supercritical carbon dioxide compressor includes: obtaining a performance curve of the supercritical carbon dioxide compressor based on the fluid similarity theory; performing off-design performance correction of the supercritical carbon dioxide compressor based on the performance curve; controlling a dry gas seal temperature of the supercritical carbon dioxide compressor based on a correspondence between temperature and pressure; and providing a fluid dynamic pressure gap between a high-speed shaft gear and a low-speed shaft gear in a gearbox of the supercritical carbon dioxide compressor, and adjusting a gearbox thrust through the fluid dynamic pressure gap.

Abstract: The nuclear power generation system with supercritical carbon dioxide as working fluid includes a main power generation system, a waste heat discharging system, a working fluid filling control system, and a working fluid filling and recycling system, all of which use supercritical carbon dioxide as the working fluid. The main power generation system is configured to convert thermal energy into electrical energy, and includes a reactor and power generation system equipment.

Abstract: A power generation system capable of regulating load includes a reactor, a turbine, a recuperator, a cooler, and a compressor, the power generation working fluid returns from an outlet of the compressor to the reactor via the recuperator to form a circulation in the power generation system; a compressor bypass, connecting the outlet of the compressor and an inlet of the cooler, and provided with a first valve set; a turbine bypass, connecting an inlet and an outlet of the turbine, and provided with a second valve set; and a storage tank. An outlet of the storage tank is connected to the inlet of the cooler to form a first bypass of the storage tank provided with a third valve set. An inlet of the storage tank is connected to the outlet of the compressor to form a second bypass of the storage tank provided with a fourth valve set.

Abstract: A supercritical carbon dioxide zero leakage dry gas sealing device includes a main gas flow path, a main gas flow branch, an isolation gas flow branch, a pressure reducing valve, and a temperature control assembly. One end of the main gas flow branch is in communication with the main gas flow path and the sealing cylinder. The isolation gas flow branch is in communication with the main gas flow path and the gearbox. The pressure reducing valve is arranged on the isolation gas flow branch. The temperature control assembly is configured to control the temperature of the injection gas flow based on the gas flow pressure of the injection gas flow introduced into the main gas flow path.