Installation method of serial type bell-less furnace top charging equipment of center of super-huge type blast furnace

Abstract

The invention relates to blast furnace installation. The invention relates to an installation method of serial type bell-less furnace top charging equipment of center of a super-huge type blast furnace, and the installation method is as follows: before furnace shutdown, completing installation of a furnace top equipment lifter; after a new furnace shell is installed, dismantling an upper-stage furnace shell lifter, and installing a sliding beam on a seven-layer large platform; completing assembly of a rotating ring beam on the ground, welding a special hoisting sling on the rotating ring beam, and lifting the rotating ring beam on the sliding beam; using a synchronous hydraulic cylinder to push the sliding beam into the center of a blast furnace body; after the furnace top equipment lifter and the rotating ring beam are assembled, temporarily lifting the rotating ring beam, and installing a big pull rod of a weighing material tank onto the rotating ring beam; overall lifting the weighing material tank and a weighing material tank rack onto the sliding beam; carrying the weighing material tank rack and a weighing material tank top to the center of the blast furnace body by the same method; connecting the big pull rod bottom and the weighing material tank; and overall lifting the connected weighing material tank and the ring beam in place. The installation method satisfies the demand of time limit for a project, reduces the workload of workers, and reduces the risk of work high above the ground.

Description

technical field [0001] The invention relates to the installation of blast furnaces, in particular to an installation method of super-large series tank type blast furnace equipment without material bell. Background technique [0002] In the previous blast furnace overhaul or new blast furnace projects, the installation of the furnace top charging system used a combination of large crawler cranes and furnace roof cranes. Direct hoisting in place (b) Use a large crane to directly hoist in place (c) First use a large crane to hoist the equipment to the hoisting area on the 7th floor platform of the furnace body, and then use the furnace top crane to install it. The three methods all operate within the 180° direction of the blast furnace, that is, within the range of furnace roof crane hoisting. For today's metallurgical enterprises overhauling or updating blast furnaces, this traditional furnace top charging equipment installation process is not feasible due to the following re...

AI Technical Summary

Problems solved by technology

[0003] (1) Restricted by the conditions of the plant, for example, the sliding channel of the old and new furnace body is unique and overlaps with the equipment transportation channel used in the traditional process of furnace top equipment (blast furnace 180° direction road), and the construction plane is compact and the road is narrow and curved Many reasons such as small roads have brought about changes in the sliding mode of the old and new furnace bodies (slides are set on the ground, transfer stations are set up at the corners, and full-range sliding is used), which makes it impossible for the new furnace top equipment to be transported to the ground hoisting area where the furnace top is driven.

[0004] (2) Due to the limitation of the original driving capacity, both the weighing tank and the ring beam of the rotating tank in the furnace top equipment are supplied as a whole, and the single weight of the equipment exceeds the rated lifting capacity of the furnace top driving, and the furnace top driving cannot The two pieces of equipment are directly hoisted

[0005] (3) Due to space constraints, due to the large size of the ring beam of the weighing tank and the rotating tank, it cannot be hoisted by a large crane to the hoisting area where the furnace top is driven on the large platform of the furnace body

[0006] (4) Limited by the construction period, if the installation of the furnace roof equipment starts after the new furnace shell is in place, it will not meet the requirements of the rapid overhaul construction period

[0007] In summary, the traditional furnace top equipment installation process cannot meet the needs of rapid overhaul in such special cases

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