Condenser front pressurization system capable of improving power generation efficiency of steam turbine of thermal power plant

Abstract

The invention provides a condenser front pressurization system capable of improving power generation efficiency of a steam turbine of a thermal power plant, which is used on the steam turbine of the thermal power plant, and the steam turbine takes steam as power and converts the heat energy of the steam into mechanical work for driving a generator of the thermal power plant. After the steam with pressure passes through the steam turbine and drives the steam turbine, the steam forms dead steam and is exhausted outwards through the exhaust end of the steam turbine; the condenser front pressurization system comprises a booster pump system which comprises an inlet end, an outlet end and at least one booster pump; the inlet end is connected with the exhaust end of the steam turbine; dead steam exhausted from the exhaust end of the steam turbine is input into the at least one booster pump from the inlet end to be pressurized and then is output from the outlet end; the outlet end of the booster pump system is connected to a condenser; and the condenser is used for condensing the pressurized dead steam from the booster pump system into water.

Description

technical field [0001] The invention relates to a supercharging system used in a steam turbine in a thermal power plant, in particular to a pre-condenser supercharging system that can improve the power generation efficiency of the steam turbine in a thermal power plant. Background technique [0002] In a thermal power plant, the main core equipment for power generation is a steam turbine, which uses the characteristics of the steam turbine to convert the thermal energy of steam into mechanical work to generate electricity. Usually, the exhaust side of the steam turbine is equipped with a condenser. In addition to condensing the exhaust steam of the steam turbine into water for reuse by the boiler, the condenser can also form and maintain a vacuum at the exhaust steam of the steam turbine. The steam turbine and the condenser are connected by pipes. Among them, the vacuum of the condenser will directly affect the efficiency of the generator. The reason is that the steam with ...

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Problems solved by technology

However, for increasing the vacuum and reducing the back pressure value, due to the influence of a large amount of water and its low-pressure accelerated evaporation characteristics, increasing the pumping capacity of the vacuum pump group often has a small effect on improving the vacuum degree of the condenser.

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