Protective dismantling method for large spherical tank

Abstract

The invention relates to a protective dismantling method for a large spherical tank. The protective dismantling method for the large spherical tank comprises the steps that the to-be-dismantled spherical tank is cleaned, a scaffold is erected on the periphery of the spherical tank according to the size of the spherical tank, an operation platform is laid on the portion, located on an equatorial zone and the above portion of the spherical tank, of the scaffold, an intra-tank operation platform is erected in the spherical tank through a hanging ladder, square clamping caps in pairs are welded onthe two sides of a weld joint of the spherical tank and are connected through ridge plate type clamps, and then an upper pole zone, an upper temperature zone, a lower pole zone, a lower temperature zone and the equatorial zone are sequentially matched with a crane so as to be dismantled in sequence. By adoption of the protective dismantling method for the large spherical tank, the spherical tankcan be safety dismantled, and a dismantled intact spherical shell is detected through a certain means and can be reconstructed or used on a lower level in another place after being evaluated.

Description

technical field [0001] The invention belongs to the technical field of major maintenance and transformation of special equipment, and in particular relates to a method for protective removal of a large spherical tank. Background technique [0002] Spherical tanks are the main equipment for pressure storage in energy, chemical, metallurgical and other industries in my country (see figure 1 ), with the development of the city and the adjustment of the planning of industrial parks in various regions, some chemical companies near the city center and along the Yangtze River are facing relocation and transformation. The large spherical tanks in the original public works will also face demolition or relocation. [0003] The design life of spherical tanks in my country is generally 20 years, and the service life of spherical tanks of some relocated enterprises is less than 10 years. The traditional demolition methods are basically destructive demolition, and the cut spherical shell...

AI Technical Summary

Problems solved by technology

[0003] The design life of spherical tanks in my country is generally 20 years, and the service life of spherical tanks of some relocated enterprises is less than 10 years. The traditional demolition methods are basically destructive demolition, and the cut spherical shell plates can only be treated as scrap iron, resulting in Huge waste; the overall relocation of spherical tanks is subject to transportation conditions, and long-distance relocation is basically impossible

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