Method for installing blast furnace single-tube downcomer

Abstract

The invention discloses a method for installing a blast furnace single-tube downcomer, characterized by using single machine and double shackles to lift each lifting unit. The method comprises the following steps: 1, conducting lifting preparation: 1) dividing lifting units; 2) determining the barycenter of each lifting unit; 3) determining the lifting point and shackle position of each lifting unit and completing the welding of the shackles; 4) determining the position lines of a riser tube and an upper shaking head, and determining the position lines of a gravity deduster shell and a lower T-joint; and 5) building a joint temporary operation platform the inner side and the outer side of the joint of each lifting unit; and 2, conducting lifting operation. According to the invention, by using single machine to lift, the amount of large-scale machines is reduced, the limitation of narrow and small construction place can be overcome, the construction cost and energy consumption can be reduced, the construction safety is raised, the target of realizing safety, high quality, high efficiency, energy saving, and low carbon is realized, and the situation of high energy consumption, high cost and high pollution existing in traditional double-machine lifting is thoroughly changed.

Description

technical field [0001] The invention relates to an installation method of a large structural part, in particular to an installation method of a single-pipe downcomer of a blast furnace. Background technique [0002] In recent years, with the vigorous development of my country's metallurgical industry, the scale of blast furnace ironmaking has continued to increase, and the volume of blast furnaces has continued to expand. At the same time, the country is paying more and more attention to the concept of "low carbon, environmental protection, and energy saving". As a construction unit, it should conscientiously implement the national policy of "low carbon, environmental protection, and energy saving" while reducing costs and improving competitiveness. The downcomer is the link between the blast furnace body and the gravity dust collector. It is the last hook in the structural installation of the blast furnace crude gas system. It is also the hook with the heaviest hoisting wei...

AI Technical Summary

Problems solved by technology

[0003] The traditional blast furnace single-pipe downcomer is hoisted by double-machine hoisting, and hoisting is carried out under the command of the hoist through two hoisting machines. However, this double-machine hoisting method requires many coordination parties during lifting, which is not easy Unified command is prone to danger; many construction machines are required, and the cost is high; it occupies a large space and cannot be constructed in a small space; large-scale machinery is used more, which does not meet the concept of "low carbon, environmental protection, and energy saving" advocated by the state.

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