Solar heat absorption system, photo-thermal power station and running method

Abstract

The invention discloses a solar heat absorption system, a photo-thermal power station and a running method. In the heat absorption system formed by sequentially connecting a heat absorption medium supply part, an inlet part, a heat absorption part and an outlet part in series, a circulation part is arranged and a circulation loop is formed between the outlet part and the input end of the heat absorption part. Under the conditions of non-uniform light spots and accidental abnormity of equipment caused by complex weather such as sudden clouds or other conditions needing temporary removal of a mirror field, a heat absorption medium in the outlet part can be driven by the circulation part to flow into the heat absorption part again through the circulation part, the heat absorption medium is heated by the heat absorption part and then flows into the outlet part, and therefore continuous circulating flow of the heat absorption medium in the circulation loop is realized. By arranging the circulation part, an existing scheme that circulation is kept through a cold salt pump is replaced, and the problem that in an emergency, an existing photo-thermal power station needs the cold salt pump to run to keep circulation, and consequently electricity consumption is huge is solved.

Description

technical field [0001] The invention belongs to the technical field of solar heat absorption, and in particular relates to a solar heat absorption system, a photothermal power station and an operation method. Background technique [0002] In the general operation process of the tower solar thermal power station, the molten salt in the cold salt tank is pumped into the absorber inlet buffer tank (referred to as the inlet tank) through the cold salt pump through the riser pipe, and a serial After the process, the molten salt flows continuously from the inlet tank into the inlet tube panel of the heat absorber, and the heat absorbing tube in the tube panel is heated by concentrated solar radiation, then flows into the buffer tank at the outlet of the heat absorber (referred to as the outlet tank), and then passes through the down pipe flow out of the heat absorbing system. During the normal operation of the heat-absorbing system, if encountering complex weather such as sudden ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a solar heat absorption system, a photothermal power station and an operation method to solve the problem that the existing photothermal power station requires a cold salt pump to run and maintain a cycle in case of an emergency, resulting in huge power consumption

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