Large-scale low-temperature storing tank

Abstract

The invention provides a large-scale low-temperature storing tank. The large-scale low-temperature storing tank comprises a steel tank body and a concrete external wall arranged on the outer side of the steel tank body, wherein the steel tank body comprises a cylinder of which the top end is opened, an arch crown which is arranged at the top end of the cylinder in a covering manner and is used forsealing the cylinder, and a plurality of anchoring pieces which are arranged in the circumferential direction of the arch crown in a spacing manner; the anchoring pieces are arranged in the extensiondirection of the periphery of the bottom end of the arch crown, and are located on the outer side of the cylinder; the concrete external wall comprises a top cover wall covering the arch crown, a side wall which is annularly arranged outside the cylinder and an annular wall which is connected between the top cover wall and the side wall; the top of the side wall is lower than that of the cylinder; the annular wall is arranged surrounding the outer side of the cylinder, the bottom of the annular wall is connected with the top of the side wall, and the top of the annular wall is out of the cylinder upwards and covers the arch crown; the inner side surface of the top of the annular wall is connected with the top cover wall, and the outer side surface of the annular wall is out of the outer side surface of the external wall downwards; and the annular wall is anchored by the anchoring pieces.

Description

Technical field [0001] The invention relates to the technical field of liquefied hydrocarbons and liquefied natural gas cryogenic storage tanks, in particular to a large-scale cryogenic storage tank. Background technique [0002] As the world pays more attention to environmental issues, the consumption of clean energy such as Liquefied Hydrocarbon and Liquefied Natural Gas (hereinafter referred to as LNG) is increasing, and the demand for large cryogenic storage tanks is also rising. With the update of cryogenic storage tank specifications, the development of material technology and construction technology, and the continuous breakthrough of design technology, the large-scale cryogenic storage tank is an important development trend in the future. [0003] In recent years, the application practice of large-scale cryogenic storage tanks at LNG receiving stations has also shown that with the large-scale cryogenic storage tanks, the cost per tank capacity is decreasing, and the scale e...

AI Technical Summary

Problems solved by technology

[0004] The low-temperature storage tank includes a steel tank body and a concrete exterior wall. The steel tank body includes a cylinder body and a vault. However, when the volume of the cryogenic storage tank increases, the self-weight of the vault increases, and the vertical force of the vault live load on the cylinder body increases. The pressure and the hoop tension on the top of the cylinder will increase accordingly, which will easily lead to bending and damage on the top of the cylinder, which will affect the safety of the cryogenic storage tank

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