Disassembly and installation method of frequency conversion cabinet of sintered main exhaust fan

Abstract

The invention relates to dismounting and mounting methods of frequency conversion cabinets for a main sintering exhaust fan. The dismounting method comprises the steps that obstacles are removed; channel steel and a steel plate are laid; a cooling air duct is dismounted; the first frequency conversion cabinet and the second frequency conversion cabinet are moved, so that the space for dismounting the third frequency conversion cabinet is reserved; the third frequency conversion cabinet is rolled out of a frequency converter room through rolling bars firstly; and the dismounted third frequency conversion cabinet is transferred through a crane. The mounting method of the frequency conversion cabinets for the main sintering exhaust fan comprises the steps that the third frequency conversion cabinet to be mounted is placed outside the frequency converter room; obstacles are removed; channel steel and a steel plate are laid; the first frequency conversion cabinet and the second frequency conversion cabinet are moved, so that the space for mounting the third frequency conversion cabinet is reserved; the third frequency conversion cabinet is rolled to the position where the third frequency conversion cabinet is about to be mounted through rolling bars; and foundation bolts and a cooling air duct are mounted. By adoption of the method, the work difficulty of mounting and dismounting the third frequency conversion cabinet is lowered greatly, mounting and dismounting of the third frequency conversion cabinet can be completed in three days, the construction time is greatly shortened, and the work efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of sintering, and in particular relates to a method for disassembling and installing a frequency conversion cabinet of a sintering main exhaust fan. Background technique [0002] With the rapid development of modern industry, the scale of steel production is getting larger and larger, and energy consumption is also increasing. Energy conservation and environmental protection indicators have become an important factor in the steel production process. In iron and steel production, iron-containing raw material ore needs to be processed by sintering system before entering blast furnace smelting. , placed on the sintering trolley and roasted to cause a series of physical and chemical changes to form sintered ore that is easy to smelt. This process is called sintering. [0003] The sintering system mainly includes sintering trolley, mixer, main exhaust fan, ring cooler and other equipment, among which the main ex...

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Problems solved by technology

[0004] In the actual working process, the main exhaust fan is generally connected with the frequency conversion device to adjust the working conditions of the main exhaust fan according to the needs of various sintering conditions. figure 1 Shown is the installation and layout plan of an existing main exhaust fan room 1 and frequency converter room 2. In the frequency converter room 2, there are two groups of frequency converter cabinets, of which the upper side is the upper frequency converter cabinet group, and the lower side is The lower frequency converter cabinet group consists of five frequency converter cabinets, and each frequency converter cabinet is connected to a cooling air duct. At the same time, each frequency conversion cabinet is fixed on the ground by anchor bolts. There are cable trenches 4 on the ground where each inverter cabinet group is installed and on the left and right sides. The five frequency conversion cabinets of the up-converter cabinet group are the first frequency conversion cabinet, the second frequency conversion cabinet, the The frequency conversion cabinet 3, the fourth frequency conversion cabinet and the fifth frequency conversion cabinet, among which the third frequency conversion cabinet 3 located in the middle is 3.4 meters long, 1.7 meters wide, 3.0 meters high, and weighs 8.5 tons. It is large in size and heavy in weight. It was found that the third frequency conversion cabinet 3 is much more likely to be damaged than other frequency conversion cabinets. When the third frequency conversion cabinet 3 needs to be replaced, the third frequency conversion The difficulty of installation and disassembly of cabinet 3 is greatly increased, and the construction time generally takes ten days. Therefore, it is urgent to develop a method that can facilitate the installation and disassembly of the third frequency conversion cabinet

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