Solar thermal power generation system

Abstract

The invention discloses a solar thermal power generation system. The system comprises a sunlight focusing device and a solar boiler, wherein the steam generated by working of the solar boiler is conveyed to a saturated steam turbine to drive the saturated steam turbine to rotate and drive a generator to work to generate electricity; one or more heat accumulators are arranged on a pipeline between the solar boiler and the saturated steam turbine; the steam inlet ends of the heat accumulators are communicated with the output end of the solar boiler through the pipeline; a steam outlet is formed on the upper parts of the heat accumulators; and the steam outlet is communicated with the steam inlet end of the saturated steam turbine, so that secondary steam generated by the heat accumulators enters the saturated steam turbine to perform expanding work. The system can be suitable for running for 24 hours and has the advantages of more stable running, lower investment and higher efficiency through an advanced interstage dehumidifying and re-heating saturated steam turbine power generation system, a black chamber heat-absorbing system, a saturated water / saturated steam heat-accumulating / evaporating system and a relatively cheap focusing system.

Description

technical field [0001] The invention relates to the field of solar thermal power generation, in particular to a solar thermal power generation system. Background technique [0002] Compared with solar photovoltaic power generation technology, one of the significant advantages of solar thermal power generation technology is that the system is easy to combine with heat storage devices, so that solar power generation devices can continuously and stably generate power day and night, greatly improving the requirements for power generation quality. Only a solar power station that can continuously and stably generate electricity day and night is a real power station, and it is possible to replace conventional energy power stations. [0003] Compared with the dual-circuit solar thermal power generation system, the use of direct steam power generation (DSG) reduces the primary heat exchange, thereby reducing the initial investment and operating costs. It is a solar thermal power gene...

AI Technical Summary

Problems solved by technology

[0004] The heat storage method and power generation method of existing solar thermal power plants are often not matched, and generally only meet the normal operation of the system during the day, and the system equipment is not fully utilized, which also increases the preheating loss during the system start-up period

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