Board slot combined solar energy and thermal power station complementary generating system

Abstract

The invention discloses a board slot combined solar energy and thermal power station complementary generating system which comprises a coal-fired boiler, a steam turbine, a generator, a condenser, a condensate pump, an oil-water heat exchanger of a low-pressure solar feed water heater, a flat-plate solar collector, a first parabolic trough type solar collector, a deaerator, a high-pressure water pump, an oil-water heat exchanger of a high-pressure solar feed water heater and a second parabolic trough type solar collector, wherein the steam turbine comprises a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder; high-temperature and high-pressure steam generated in the coal-fired boiler does work by expansion in the high-pressure cylinder, the intermediate-pressure cylinder and the low-pressure cylinder of the steam turbine to drive a generator to rotate and output an electrical load externally. The generating system can be used for realizing the capacity expansion and consumption reduction of thermal power stations and solving the problem that the solar energy is unstable and discontinuous, and is beneficial to low-cost transformation of the thermal power stations and large-scale application and popularization of a solar energy technology.

Description

technical field [0001] The present invention relates to the technical field of complementary power generation system and solar energy utilization, in particular to a complementary power generation system of solar energy and thermal power station combined with plates and grooves, in particular to a parabolic trough solar collector utilizing a flat-plate solar heat collector and a low concentration ratio. A complementary power generation system in which the solar feedwater heater composed of a solar heater replaces the steam turbine steam extraction feedwater heater to heat the feedwater. Background technique [0002] my country's coal-fired thermal power plants have mature technology and good economy, and their power generation accounts for more than three-quarters of the country's total power generation. To achieve the national goal of "energy saving and emission reduction", conventional coal-fired thermal power plants urgently need to find new ways to reduce energy consumpti...

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Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to provide a complementary power generation system of solar energy and thermal power stations combined with plates and slots, which can expand the capacity of thermal power stations and reduce consumption, solve the problem of unstable and discontinuous solar energy, and is beneficial to the low-cost transformation and maintenance of thermal power stations. Large-scale promotion and application of solar energy technology

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