Blast furnace ironmaking distributor water-cooling air-tight box combined cooling device

Abstract

The invention discloses a blast furnace ironmaking distributor water-cooling air-tight box combined cooling device, and belongs to the technical field of low-heat-conductivity-coefficient material heat insulation and circulating water-cooling equipment. The combined cooling device comprises a central throat pipe (1), a cover (5), a first aluminum silicate fibrofelt (6), a trunnion rotating sleeve(7), a thin steel plate (8), a second aluminum silicate fibrofelt (9), a water-cooling chassis (10) and a box body (11), wherein the central throat pipe (1) is a fixed assembly, the geometric rotationcenter line of the central throat pipe (1) is also the center line of a distributor, the central throat pipe (1) is arranged in a furnace top furnace gas area, the central throat pipe (1) is composedof a water distribution disc (2), a crack water jacket (3) and a sealing bottom plate (4), the upper portion of the central throat pipe (1) is the water distribution disc (2), the middle portion of the central throat pipe (1) is the crack water jacket (3), and the bottom of the central throat pipe (1) is the sealing bottom plate (4) of a water-cooling channel. According to the blast furnace ironmaking distributor water-cooling air-tight box combined cooling device, the central throat pipe is used for crack cooling, the middle portion of the trunnion rotating sleeve is used for thermal insulation, the lower portion of the water-cooling chassis is used for thermal insulation, and the plane of the water-cooling chassis is used for spiral cooling. The blast furnace ironmaking distributor water-cooling air-tight box combined cooling device has the advantages that the cooling effect is good, and great convenience is brought to the design of a distributor transmission device; and the maintaining, dismounting and cooling enhancing effects of the cooling device are good, and meanwhile a good mounting method is formed.

Description

technical field [0001] The invention belongs to the technical field of low thermal conductivity material heat insulation and circulating water cooling equipment, and particularly relates to a combined cooling device for a water-cooled airtight box of a blast furnace ironmaking distributor, which can be used in a toxic blast furnace ironmaking furnace gas environment with high temperature, high pressure and high dust content. The combination of aluminum silicate fiber felt insulation and high-pressure circulating water forced cooling equipment forms a closed space with suitable temperature to place the water-cooled air-tight box transmission device to make it operate normally, and at the same time forms a good installation method. Background technique [0002] The uppermost part of the ironmaking blast furnace is the furnace throat cone section, on which the furnace roof steel ring (also called furnace roof flange) is welded. 1. The distribution chute assembly is composed of ...

AI Technical Summary

Problems solved by technology

Usually the furnace top temperature should be controlled at 150-300°C, and the normal temperature in the airtight box should be <70°C. The above environmental conditions are the normal working conditions of the distributor. If the furnace top temperature is too high and lasts too long or the cooling effect is not good, Otherwise, it may cause the internal temperature of the water-cooled airtight box to rise, causing the parts to get stuck and stop, thus affecting the normal operation and service life of the distributor.

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