Testing type high-temperature molten salt loop

Abstract

The invention discloses a testing type high-temperature molten salt loop and relates to a solar heat generation heat accumulation loop. The testing type high-temperature molten salt loop comprises five parts, wherein the first part is a molten salt box, wherein the molten salt is heated by the molten salt box through current, so that the molten salt is dissolved and flows into the loop through a high-temperature baffle valve; the second part is a molten salt heating introduction section comprising a section of molten salt loop, a high-temperature flow meter and an expansion box; the third part is a static check box, after the molten salt is heated and molten in the molten salt box, the molten salt flows into the loop, and the static check box; the fourth part is a dynamic test section located below the loop, the molten salt stored in the molten salt heat storage bank is extracted and returns in the loop through a high-temperature molten salt pump so as to form a cycle; and the fifth part is the molten salt heat storage bank. According to the testing type high-temperature molten salt loop, the molten salt flows in a special pipeline, the interaction conditions of different materials and the molten salt can be tested, and different sealing joints can be measured by using a heat storage tank.

Description

technical field [0001] The invention relates to a heat storage circuit for solar thermal power generation, in particular to a test-type high-temperature molten salt circuit. Background technique [0002] The parabolic trough system in solar thermal power generation is currently the most mature and widely used solar thermal power generation technology. A traditional steam turbine power plant. The concentrating reflector tank is made of surface-treated metal sheets, and the single-axis solar tracking system ensures that 80 to 100 times the concentrated sunlight can be accurately reflected onto the heat-absorbing tube, and the synthetic oil flowing in the tube is heated to 400°C At high temperatures (higher temperatures can be achieved with new media such as molten salt), the hot oil is sent to a heat exchanger where steam is generated to drive a conventional turbine generator. There is another important component in some newer trough CSP plants: the heat storage tank. It us...

AI Technical Summary

Problems solved by technology

Since the thermal medium synthetic oil mainly used in the current trough CSP power station can only be heated to 400°C, and the quality of the steam generated at this temperature is average, which limits the operating efficiency of the back-end generator set, so that the annual power generation of the entire power station Efficiency can only reach 14%~16%

Images