A construction method for synchronous flipping of a double-deck vault storage tank

Abstract

The invention discloses a synchronous inversion construction method of a double-layer vault storage tank. The synchronous inversion construction method comprises the steps of installation of a bottom plate of an outer tank, installation of a cold insulation layer, installation of a bottom plate of an inner tank, positive installation of the inner tank, the outer tank (1 and 2) and wall plates, installation of a top plate of the outer tank, installation of a top plate of the inner tank, and synchronous construction of the wall plates of the inner tank and the outer tank. By the adoption of the construction method for constructing the double-layer storage tank, compared with a traditional construction method, the construction operation environment is improved, the construction efficiency is improved, the construction period is shortened, aerial operation is reduced, the safety coefficient is increased, the work amount of secondary mounting and dismounting of construction tools is reduced, pollution to the stainless steel inner tank is avoided, the finished product protection quality is effectively improved, and the construction cost is reduced.

Description

Technical field [0001] The invention relates to an installation technology of a large storage tank, in particular to a synchronous inverted construction method of a double-arch roof storage tank. Background technique [0002] Double-layer storage tanks are widely used in the storage of cryogenic liquids such as liquid oxygen, liquid nitrogen, liquefied petroleum gas and ethylene. With the rapid development of my country's chemical industry, a large number of new projects have adopted it as the main cryogenic medium storage equipment. Due to the design, construction and construction technology, the low-temperature double-layer storage tank has the characteristics of high technical requirements, difficult construction, and strong professionalism. It is required that reasonable construction techniques and strict process quality control are required during the installation and construction process to effectively ensure the construction quality and ensure the normal operation of the ...

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Problems solved by technology

[0003] In the existing double-layer storage tank construction technology, the traditional storage tank inversion technology is often used, that is, the method of inverting the outer tank first, and then the inner tank is constructed one by one. Due to the influence of the construction technology, the construction period is long. It has a great impact on the progress of the project; its inverted construction tooling needs to be installed and dismantled twice, which increases its engineering volume; at the same time, when the second tank is constructed, its raw materials, tooling, and means of materials are reversed, installed, and removed. Inconvenient, the protection of finished storage tank products also has a great impact, and the protection of finished products is difficult

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