2results about How to "Improve working ability" patented technology

The application provides a peak shaving power generation system coupling molten salt heat storage and steam turbine supplementary steam, and relates to the technical field of thermal engineering. The system comprises a low-temperature molten salt tank, a molten salt heater, a high-temperature molten salt tank, a molten salt steam-water heat exchanger, a gas boiler, a steam turbine and a feedwater system. The molten salt heater receives low-temperature molten salt pumped into the low-temperature molten salt tank by a low-temperature molten salt pump during the low electricity consumption period, and heats the low-temperature molten salt by the heat of main steam provided by the gas boiler. The high-temperature molten salt tank receives and stores the high-temperature molten salt obtained by heating. The molten salt steam-water heat exchanger receives high-temperature molten salt pumped into the high-temperature molten salt tank by a high-temperature molten salt pump during the high electricity consumption period, and transfers the heat energy of the high-temperature molten salt to high-pressure feedwater from the feedwater system to generate superheated steam. Part of the superheated steam is sent into a main steam main pipe connected with the gas boiler. The application can effectively improve the steam turbine power generation efficiency, realizes efficient utilization of heat energy and flexible adjustment of power grid load.

The utility model provides a kind of impeller and the centrifugal fan comprising it, impeller includes front disc, rear disc and blade, blade is connected in front disc and rear disc, blade is cut from the export end of blade towards the import end of blade along the chord length direction of blade near front disc, to form the transition section along the axial direction of impeller close to front disc and main blade section close to rear disc, along chord length direction, transition section is partially connected with main blade section, the export angle of transition section is greater than the export angle of main blade section. By cutting blade to form transition section and main blade section, and the export angle of transition section is set to be greater than the export angle of main blade section, the flow rate of airflow in transition zone is increased, to avoid forming larger vortex zone at the wall surface of volute close to front disc, so as to improve the work capacity of transition section, and then improve the work capacity of impeller as a whole, improve the efficiency of centrifugal fan with the impeller.