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Trough-tower combined steam generation system

A generation system and steam technology, applied in the field of solar thermal radiation, can solve the problems of small footprint of solar heat radiation collection devices, affecting the efficiency of steam turbines, affecting the efficiency of photoelectric conversion, etc., to simplify the system complexity, reduce investment costs and plant costs The effect of power consumption rate and improvement of photoelectric conversion efficiency

Inactive Publication Date: 2019-12-13
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The trough heat conduction oil solar thermal power generation system has a compact structure, and its solar thermal radiation collection device occupies a smaller area than the tower system, and the heat collection system has a high maturity. However, due to the limitation of the working temperature of the medium, the steam temperature is generally not higher than 400 ℃, while the steam temperature directly affects the efficiency of the steam turbine and affects the photoelectric conversion efficiency

Method used

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  • Trough-tower combined steam generation system
  • Trough-tower combined steam generation system

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine figure 1 and figure 2 To illustrate this embodiment, a trough-tower combined steam generation system described in this embodiment includes an energy storage system, a trough-type heat transfer oil steam generation system, a tower-type molten salt steam generation system, and a water supply system 20. The energy storage system and the tower The tower type molten salt steam generation system and the trough type heat transfer oil steam generation system are connected to the water supply system 20, and the tower type molten salt steam generation system is connected to the trough type heat transfer oil steam generation system .

specific Embodiment approach 2

[0022] Specific implementation mode two: combination figure 1 and figure 2 To illustrate this embodiment, the tower type molten salt steam generation system described in this embodiment includes a molten salt preheater 10, a molten salt evaporator 11, a molten salt superheater 13 and a molten salt reheater 14,

[0023] The molten salt superheater 13 and the molten salt reheater 14 are all connected to the molten salt evaporator 11, and the molten salt evaporator 11 is connected to the molten salt preheater 10; the molten salt preheater 10, the molten salt evaporator 11, the molten salt Both the superheater 13 and the molten salt reheater 14 are connected to the energy storage system.

[0024] During normal operation, the feed water flow rate is controlled by controlling the valve opening of the feed water regulating valve 9, and the temperature of the water entering the molten salt preheater 10 is controlled by controlling the opening of the regulating valve 7, and enters th...

specific Embodiment approach 3

[0027] Specific implementation mode three: combination figure 1 and figure 2 Describe this embodiment, the energy storage system described in this embodiment includes a high-temperature salt tank 1, a medium-temperature salt tank 2 and a low-temperature salt tank 3,

[0028] The high-temperature salt tank 1 is connected to the molten salt reheater 14 and the molten salt superheater 13 respectively, the medium-temperature salt tank 2 is connected to the molten salt superheater 13 , and the low-temperature salt tank 3 is connected to the molten salt preheater 10 .

[0029] Among them, the high temperature salt tank 1 is used to store the energy storage of the tower type molten salt heat collection system, and the medium temperature salt tank 2 is used for the energy storage of the trough heat transfer oil heat collection system and after heat exchange with the molten salt superheater and molten salt reheater molten salt, and the low-temperature salt tank 3 is used to store the...

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Abstract

The invention relates to steam generation systems and provides a trough-tower combined steam generation system in order to improve the photoelectric conversion efficiency of a trough type solar-thermal power station. The trough-tower combined steam generation system comprises an energy storage system, a trough type heat conducting oil steam generation system, a tower type molten salt steam generation system and a water supply system. The energy storage system is connected with the tower type molten salt steam generation system. The tower type molten salt steam generation system and the troughtype heat conducting oil steam generation system are both connected with the water supply system. The tower type molten salt steam generation system is connected with the trough type heat conducting oil steam generation system. The invention belongs to the field of the solar thermal technology. The trough-tower combined steam generation system integrates two kinds of solar-thermal power generationforms, enables steam of the trough type heat conducting oil solar-thermal system to get into the tower type molten salt steam generation system to be further heated and improves the solar-thermal conversion efficiency of the trough-tower combined comprehensive solar-thermal power station.

Description

technical field [0001] The invention relates to a steam generation system, in particular to a trough-tower combined steam generation system, which belongs to the field of solar thermal technology. Background technique [0002] The trough heat conduction oil solar thermal power generation system has a compact structure, and its solar thermal radiation collection device occupies a smaller area than the tower system, and the heat collection system has a high maturity. However, due to the limitation of the working temperature of the medium, the steam temperature is generally not higher than 400 ℃, while the steam temperature directly affects the efficiency of the steam turbine and the photoelectric conversion efficiency. The molten salt tower photothermal power plant has high heat collection efficiency, high temperature of working medium, steam temperature can reach above 550°C, and high photoelectric conversion efficiency. Therefore, if the two forms of photothermal power gene...

Claims

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Application Information

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IPC IPC(8): F22B1/16F22G3/00F22D1/00F24H7/04F03G6/06
CPCF03G6/06F22B1/167F22D1/00F22G3/00F24H7/0433Y02E10/46
Inventor 张明宝李琪贾培英张义堃徐翔韩健刘学苏雪刚
Owner HARBIN BOILER
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