Ultrasonic reinforced cold filling device of molten salt heat absorber

Abstract

An ultrasonic reinforced cold filling device of a molten salt heat absorber comprises a controller (1), an ultrasonic generator (2), an ultrasonic convertor (3) and temperature testers, wherein the ultrasonic convertor (3) is located on a molten salt pipeline (6) between molten salt heat absorber plates (5); the temperature testers (4a and 4b) are mounted on the molten salt pipeline (6) in front and at back of the ultrasonic convertor (3); the input end of the ultrasonic convertor (3) is connected with the output end of the ultrasonic generator (2); and the input end of the ultrasonic generator (2) is connected with the output end of the controller (1). A temperature difference signal of the temperature testers (4a and 4b) in front and at back of the ultrasonic convertor (3) is transmitted to the controller (1); a temperature tester (4c) is mounted at a low-temperature section of the molten salt heat absorber plates (5), and a temperature signal of the temperature tester (4c) is transmitted to the controller (1); and the controller (1) controls the power of the ultrasonic generator (2) according to the temperature difference signal in front and at back of the ultrasonic convertor (3) and the temperature signal of the molten salt heat absorber plates (5).

Description

technical field [0001] The invention relates to an ultrasonically enhanced cold charging device for a molten salt heat absorber of solar thermal power generation. Background technique [0002] Molten salt tower solar thermal power generation technology is the most commercially promising solar thermal power generation technology. This is mainly because molten salt can be used not only as a heat transfer medium, but also as a good heat storage medium, which can realize the integration of heat absorption and heat storage. The 19MWe molten salt tower power station Gemasolar power station built in Seville, Spain is the world's first solar thermal power station to achieve 24-hour continuous power generation, which proves the technology's ability to provide basic power loads. [0003] However, since the crystallization point of molten salt (60%NaNO3+40%KNO3) reaches 210°C, it is very easy to freeze. It is usually used to preheat the pipeline by winding a high-temperature electric...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it takes a long time to preheat the surface of the heat absorber to above 210°C, usually about 1.5 to 2 hours, which greatly reduces the power generation hours of the power station and reduces the annual power generation of the power station. resulting in an increase in the cost of electricity

[0004] In short, the cold charging technology of the molten salt heat absorber can shorten the start-up time of the heat absorber, but the technical means to strengthen the cold charging are still lacking.

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