Double-layer jacketed high-temperature fused salt storage tank

Abstract

The invention discloses a double-layer jacketed high-temperature fused salt storage tank. The double-layer jacketed high-temperature fused salt storage tank comprises a tank body, a tank top and a tank bottom, the tank body comprises an inner tank body and an outer tank body, a jacketed space is formed between the inner tank body and the outer tank body, a heat preservation layer is arranged on the inner side, in the jacketed space, of the outer tank body, and an air layer is reserved between the heat preservation layer and the inner tank body. A double-layer structure is adopted for the tank body, and a combined type heat preservation structure is formed by the heat preservation layer and the air layer, so that high temperature is prevented from affecting the outer tank body, the inner tank body is enabled to expand freely without being limited by the heat preservation layer, heat preservation materials of the tank top, a tank wall and the tank bottom are mounted in an outer steel shell, influences on performance of the heat preservation materials caused by the fact that exiting external heat preservation materials are arranged externally are avoided, and service lives of the heat preservation materials are prolonged.

Description

technical field [0001] The invention belongs to the technical field of solar photothermal devices, in particular to a double-jacketed high-temperature molten salt storage tank. Background technique [0002] Solar thermal power generation is an important way to source clean energy. At present, the use of molten salt as a heat storage medium for solar thermal power generation is a universally recognized solution in the world. It can not only be used as an intermediate heat carrier, but also can be stored in molten salt storage tanks. , to ensure continuous and stable output of electric energy at night without sunlight. It is a grid-friendly power supply that solves the power application problems commonly faced by new energy sources. High temperature molten salt storage tanks play a key role in the process of energy storage and power generation. Whether the insulation effect of the molten salt storage tank is good or not, and whether the equipment is safe and reliable directly...

AI Technical Summary

Problems solved by technology

Since the maintenance of the storage tank not only needs to empty the storage tank, but also needs to wait for it to cool down naturally before starting maintenance, which is very time-consuming

[0004] The current high-temperature molten salt storage tank generally adopts the structural form of a conventional cylindrical stainless steel storage tank plus thermal insulation material, which mainly has the following technical problems: 1. The thermal insulation material is installed on the outside of the tank body, and only the thermal insulation aluminum skin is used. Or iron sheet protection, vulnerable to rain, snow, strong wind, it is inevitable to need regular maintenance; 2. The outside of the tank is wrapped with thermal insulation materials, the deformation of the tank and the leakage of the weld cannot be effectively observed and found in time; 3 1. It is difficult to preheat the tank body, it takes a long time and it is difficult to make the temperature of each part of the tank body uniform; 4. Due to the uneven heating of the tank roof and the tank wall, the temperature difference stress at the connection between the two is large and easy to damage; 5. The tank roof work The temperature is close to high-temperature molten salt, high temperature, difficult to design and manufacture; 6. The thermal insulation material at the bottom of the tank is directly installed on the tank body, and additional protection is required to avoid the influence of rain; at the same time, the cold air pipe needs to pass through or bypass The tank foundation beam, the tank foundation design is difficult, the structure is complex, and the construction cost is high

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