Energy recovery system for start-up bypass of solar-thermal power station and operation method

A technology for solar thermal power plants and energy recovery, which is applied in solar thermal power generation, mechanisms that generate mechanical power, engine components, etc. problems, to achieve the effect of reducing energy loss, reducing impact, and increasing power generation

Pending Publication Date: 2021-08-24
XI AN JIAOTONG UNIV
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Problems solved by technology

However, due to the intermittent characteristics of solar energy, solar thermal power plants generally need to be started daily, and the energy loss during the start-up process will signi

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  • Energy recovery system for start-up bypass of solar-thermal power station and operation method

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] An energy recovery system for the start-up bypass of a photothermal power station, including a power generation system and a heat storage system of the photothermal power station. Bypass temperature and pressure reduction device 3, high pressure cylinder 4, steam turbine low pressure bypass temperature and pressure reduction device 5, low pressure cylinder 6, generator 7, air-cooled condenser 8, condensate pump 9, low pressure heater 10, deaerator 11. Feed water pump 12, feed water regulating valve 13, feed water bypass regulating valve 14, high pressure heater 15;

[0018] The heat storage system sequentially includes a steam regulating valve 16, a heat storage medium-feed water heat exchanger 17, a heat storage medium-steam heat exchanger 18, a heat storage medium regulating valve 19, a heat storage medium pump 20, and a pres...

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Abstract

The invention discloses an energy recovery system for a start-up bypass of a solar-thermal power station and an operation method, relates to the field of solar-thermal power stations, and is mainly used for solving the problems of bypass energy recovery and utilization in the start-up process of the solar-thermal power station. The system mainly comprises a power generation system of a solar-thermal power station and a heat storage system of a heat storage medium-water supply heat exchanger, a heat storage medium-steam heat exchanger, a heat storage medium adjusting valve, a heat storage medium pump, a heat storage tank and the like which are connected to the power generation system in parallel. In the start-up process of the solar-thermal power station, energy of bypass steam is recycled by adjusting the flow of a heat storage medium in the heat storage medium-steam heat exchanger; when illumination is insufficient, the recycled energy is utilized by adjusting the working medium flow of the heat storage medium-water supply heat exchanger; and the bypass loss in the start-up process of the solar-thermal power station can be effectively reduced, the influence of illumination fluctuation on the unit generation power can be reduced, and stable and efficient operation of the solar-thermal power station is achieved.

Description

technical field [0001] The invention relates to the technical field of photothermal power plants, in particular to an energy recovery system and an operation method for a start-up bypass of a photothermal power station. Background technique [0002] Because solar energy has the advantages of cleanness and abundant resources, the utilization technology of solar energy has been developing continuously in recent years. Photothermal power station is a technology that effectively utilizes solar energy to generate electricity. However, due to the intermittent characteristics of solar energy, solar thermal power plants generally need to be started daily, and the energy loss during the start-up process will significantly reduce the annual power generation of the solar thermal power plant, increase the cost of power generation, and reduce the market competitiveness of the solar thermal power plant. During the start-up process of the solar thermal power station, since the start-up tim...

Claims

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Application Information

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IPC IPC(8): F03G6/00F01K13/02F01K13/00F01D17/14F01D15/10F01D13/02
CPCF03G6/005F01K13/00F01K13/02F01D15/10F01D17/145F01D13/02Y02E10/46
Inventor 张顺奇刘明刘继平严俊杰
Owner XI AN JIAOTONG UNIV
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