A method of manufacturing a large cylindrical storage tank

Abstract

A method for manufacturing a large cylindrical material storing tank comprises the following steps that a plurality of hoisting stand columns are evenly distributed inside a tank body in the circumferential direction, wherein the hoisting stand columns are provided with electric hoists; a first layer tank body member is formed by splicing a plurality of arc-shaped pipe pieces, the part, close to the bottom, inside the first layer tank body member is provided with a hoisting stiffening ring, and a lifting lug is arranged on the hoisting stiffening ring; the first layer tank body member is hoisted by the electric hoists; a second layer tank body member is formed by splicing a plurality of arc-shaped pipe pieces below the first layer tank body member, the electric hoists are operated to enable the first layer tank body member to fall at the upper end of the second layer tank body member, and the first layer tank body member and the second layer tank body member are connected in a welding mode; by parity of reasoning, a plurality of layers of tank body members are welded into the whole tank body; the large cylindrical material storing tank is installed and manufactured through the steps. According to the method, the effect of the transporting and storing steps on the tank body members is reduced, the using cost of hoisting devices is reduced, the manufacturing and installing efficiency and tank body quality are improved, and manufacturing and installing cost is reduced.

Description

technical field [0001] The invention relates to the field of making tank bodies, in particular to a method for making a large cylindrical material storage tank that can be used in the fields of hydropower, building construction or chemical industry. Background technique [0002] Large circular storage tanks are often used in the construction of hydropower stations and other industries. The characteristics of this type of circular storage tank are large volume, so its diameter and height are relatively large. For example, a large cylindrical storage tank used in a certain project With a diameter of 16 meters, it is welded by 12 layers of tank members with a height of 1.5 meters each. After calculation, the weight of a single layer is 5154 kg, and the total weight is 61848 kg. The tank body material for making this kind of storage tank--steel plate is mainly 6mm-10mm thin steel plate, so its weight is relatively light and its strength is low. If the usual production and insta...

AI Technical Summary

Problems solved by technology

If the usual production and installation method is used, that is, to make tiles first and then assemble the tiles into a hollow cylinder for overall hoisting or single tile hoisting, this method requires multiple stiffening rings with angle steel when making tiles. This not only increases the production cost, but at the same time, whether it is a single tile or assembled as a whole, a larger crane is required at a higher level. At the same time, there is a construction safety risk for personnel working at height, which is high in cost and low in efficiency.

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