Molten salt storage tank insulation structure foundation

Abstract

The invention relates to a thermal insulation structure foundation of a molten salt storage tank, belonging to the technical field of solar power generation. The invention consists of a deformation-resistant structure, a thermal insulation structure, and a reinforced concrete bottom plate from top to bottom, the steel ring wall is placed on the reinforced concrete bottom plate, and the thermal insulation structure is compacted ceramsite with good gradation, which can follow the steel ring wall to reach high temperature. The deformation-resistant structure is a dry sand layer with a slope close to the lower surface of the tank bottom plate, which can convert the sliding friction generated by the displacement of the storage tank bottom plate when thermal deformation occurs into rolling friction; the reinforced concrete bottom plate is embedded with air The cooling pipe can reduce the temperature of the concrete floor and avoid high temperature deformation and cracking. The invention adopts thermal insulation measures, a deformation-resistant structure and a heat-dissipating structure, and realizes the functions of not only keeping the medium in the storage tank warm, but also resisting high-temperature deformation and pressure bearing, and avoiding the excessive settlement of the molten salt storage tank and the undesired failure of the foundation. The inclination or instability of the storage tank caused by the uniform settlement may even lead to secondary hazards such as the rupture of the storage tank.

Description

technical field [0001] The invention relates to a thermal insulation structure foundation of a molten salt storage tank, belonging to the technical field of solar power generation. Background technique [0002] In the field of solar power generation, the radiation energy of solar energy is usually converted into thermal energy of high-temperature molten salt by heating molten salt for easy storage. The amount of high-temperature molten salt that needs to be stored in solar power stations is huge, up to 10,000 tons. The volume and weight of high-temperature molten salt storage tanks are huge, and the requirements for the bearing capacity and heat resistance of the foundation are very high. At present, there are no relevant design specifications for the foundation of molten salt storage tanks in the field of solar power generation in China. The current "Code for Design of Steel Storage Tank Foundations" GB50473 requires that the self-weight of the medium is greater than 10KN / m...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of unsatisfactory thermal insulation effect of the foundation thermal insulation structure of the molten salt storage tank, poor heat dissipation of the bottom layer, and resistance to deformation, and propose a thermal insulation structure foundation of the molten salt storage tank. The structure and heat dissipation structure realize the function of not only keeping the medium in the storage tank warm, but also able to withstand high temperature deformation and pressure bearing, and not conduct excess heat to the foundation

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