A heat exchange system for solar thermal power generation system

Abstract

The invention discloses a heat exchange system for a solar heat power generation system. The heat exchange system for the solar heat power generation system comprises a first high-temperature heat storage medium conveying pipeline, a preheater, an evaporator, a super heater, a water feeding device, a turbine and a first valve. Compared with the prior art, the heat exchange system for the solar heat power generation system has the characteristics that an eighth pipeline is provided with the first valve, the first valve can be opened when the load at the evaporator of the heat exchange system needs to be decreased so that heat storage media from the super heater can be shunted, one part of the heat storage media enter the evaporator, the other part of the heat storage media directly enter the preheater, then the amount of the heat storage medium entering the evaporator is made to be reduced, and accordingly the purpose of regulating the load of the heat exchange system is achieved.

Description

technical field [0001] The invention relates to the field of solar thermal power generation, in particular to a heat exchange system used in a solar thermal power generation system. Background technique [0002] With the continuous consumption of fossil fuels, the problem of energy depletion is becoming more and more serious. In addition, the massive consumption of fossil energy is constantly destroying the living environment of human beings and seriously threatening the survival and safety of human beings. As a renewable green energy, solar energy has the characteristics of "inexhaustible and inexhaustible". As a way of solar energy utilization, solar thermal power generation can ensure stable power output and has the ability of peak shift regulation, so it has a wide application prospect. [0003] At present, the most widely used solar thermal power generation technologies mainly include tower technology and trough technology, and the medium used for heat absorption is m...

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Problems solved by technology

[0004] In practical applications, the tower solar thermal power generation system needs to have a strong load regulation capability. When the tower solar thermal power generation system needs to output large electric power, the heat exchange system is required to be able to output a large load. The power generation system needs to output a small load, and requires the heat exchange system to be able to output a small load, which requires the heat exchange system to have flexible adjustment capabilities. In the prior art, only a single high-temperature heat storage medium is used to control the heat exchange system The water working medium is heated, and the superheated steam load generated in the heat exchange system is constant. When the load needs to be adjusted, it cannot respond to the load adjustment requirement in time.

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