Fused salt storage tank for solar photo-thermal power generation

Abstract

The invention discloses a fused salt storage tank for solar photo-thermal power generation. The fused salt storage tank is characterized in that a tank top plate is arranged at the top of a tank body; a preheating air inlet pipe is embedded in one side of the tank top plate, an air outlet pipe is arranged on the other side of the tank top plate, the air outlet pipe is connected with the air inlet end of a circulating pump through a pipeline, and the air outlet end of the circulating pump is connected with the preheating air inlet pipe through a pipeline; and a heat preservation assembly is arranged outside the tank body, a salt injection pipe and a salt outlet pipe are correspondingly arranged on the tank top plate, and a temperature sensor is arranged in the salt outlet pipe. The heat preservation of the tank body can be fully realized from the outside, so that the damage to the structure of the tank body is reduced, the strength of the structure of the tank body is improved, and under the condition of saving energy, the temperature maintenance of fused salt is effectively guaranteed, and the operation stability of equipment is improved.

Description

technical field [0001] The invention belongs to the technical field of molten salt storage tanks, in particular to a molten salt storage tank for solar thermal power generation. Background technique [0002] Solar power generation technologies include photovoltaic power generation and photothermal power generation, in which photothermal power generation adjusts the impact of grid instability caused by solar energy instability by adding heat storage systems, and common heat storage systems include double-tank heat storage systems and single-tank heat storage systems The heat storage system, whether it is a double-tank heat storage system or a single-tank heat storage system, has molten salt as a more reliable medium, and the lowest temperature used must ensure that the molten salt does not solidify, otherwise more energy will be required to restart, and The solidification of the molten salt will damage the molten salt storage tank. The insulation effect of the existing molten...

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Problems solved by technology

[0002] Solar power generation technologies include photovoltaic power generation and photothermal power generation, in which photothermal power generation adjusts the impact of grid instability caused by solar energy instability by adding heat storage systems, and common heat storage systems include double-tank heat storage systems and single-tank heat storage systems The heat storage system, whether it is a double-tank heat storage system or a single-tank heat storage system, has molten salt as a more reliable medium, and the lowest temperature used must ensure that the molten salt does not solidify, otherwise more energy will be required to restart, and The solidification of the molten salt will damage the molten salt storage tank. The insulation effect of the existing molten salt storage tank is poor. In order to improve the insulation effect, some devices add a heating device in the tank. On the one hand, the extension of the heating device is easy to be damaged. On the other hand, the structural strength of the tank will be reduced due to the increased heating device, and the use of external heat preservation devices consumes more energy

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