An elastic felt hanging method for a large full-containment low-temperature storage tank

Abstract

The invention provides an elastic felt hanging construction method for a large full-containment low-temperature storage tank. The method comprises the steps of 1) building a material platform, lifting materials to the material platform and carrying the materials to a suspended roof floating plate in a tank; 2) installing an electric hanging basket on a vault guide rail; 3) establishing a support on the suspended roof floating plate; 4) installing pulleys and a guide chain on the vault guide rail; 5) prefabricating elastic felt modules; 6) installing heat preservation nails; 7) installing clamping plates; 8) winding glass cloth; 9) installing a hanging hook, a temporary hanging hook and temporary clamping plates; 10) pushing one elastic felt module and stops pushing with a remaining length being 5-6m; 11) hitching the temporary hanging hook to the guide chain and slowly pushing the remaining part of the elastic felt module; 12) moving the pulleys and moving the elastic felt module to a predetermined position of a tank wall; 13) dismounting the temporary clamping plates, ropes and the temporary hanging hook and finishing formal hanging on the tank wall; 14) successively hoisting and conveying the other elastic felt modules to predetermined positions, dismounting temporary clamping plates, ropes and temporary hanging hooks, making the elastic felt modules abut on the adjacent properly-installed elastic felt modules and finishing formal hanging on the tank wall; 15) tying ropes to rope holes of the clamping plates and the corresponding tank bottom concrete ring beam pre-buried pull ring; completing the hanging construction.

Description

technical field [0001] The invention relates to the construction and installation of a cold insulation layer of a large-scale fully contained low-temperature storage tank, and specifically refers to an elastic felt tapestry method for a large-scale fully contained low-temperature storage tank. Background technique [0002] Large all-inclusive low-temperature storage tank is a storage facility commonly used in modern industrial production, and is mainly used to store low-temperature liquid media such as ethylene, propylene, and LNG. It is usually mainly composed of a concrete outer tank, a low-temperature steel inner tank and a cold insulation layer between the two. The cold insulation layer is generally composed of glass wool elastic felt and expanded perlite. The elastic felt is an important bearing part in the cold insulation structure of the storage tank. The feed material shrinks when it is cold or the material is heated and expands. The pressure of the expanded perlite...

AI Technical Summary

Problems solved by technology

In addition, there is a certain shaking of the hanging basket during the lifting process, which will cause the pasted insulation nails to fall or bend, and need to be repaired continuously, resulting in low construction efficiency, slow construction progress, low work efficiency, difficult to control quality, and long construction period

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