Purging device and technology of blast furnace charging bucket weighing system

Abstract

The invention discloses a purging device and technology of a blast furnace charging bucket weighing system. The purging device comprises a ripple compensator purging mechanism and a lower valve box purging mechanism, wherein the ripple compensator purging mechanism comprises a first pipeline, and a first manual block valve, a first valve, a first pressure meter, a first one-way valve and a first decompression valve which are sequentially arranged on the first pipeline from outside to inside; the outer end of the first pipeline is connected with a nitrogen source; the inner end of the first pipeline is connected with the inner cavity of a ripple compensator; the lower valve box purging mechanism comprises a second pipeline, and a second manual block valve, a second valve, a second pressure meter, a second one-way valve and a second decompression valve which are sequentially arranged on the second pipeline from outside to inside; the outer end of the second pipeline is connected with a nitrogen source; and the inner end of the second pipeline is connected with a cavity. According to the purging device, the dusty gas can be effectively prevented from flowing or spreading into the inner cavity of the ripple compensator and the clearance between the bottom of a material flow regulating valve chute and the outer shell of a lower valve box.

Description

technical field [0001] The invention relates to a blast furnace top material tank weighing system, in particular to a blast furnace material tank weighing system purging device and process. Background technique [0002] In blast furnace production, the temperature in the center of the blast furnace top space is as high as about 700°C, and the pressure in the top space is about 2.5MPa. Raw materials are loaded into the blast furnace from the outside of the furnace at atmospheric pressure, and the raw materials are distributed on the material surface according to the operator's requirements. superior. The above functions are completed by the bellless furnace top, which has many forms, among which the old-fashioned tank-joining bellless furnace roof is an early structural form. In the charging process, the weighing system needs to complete the weighing of the weight of the tank and the raw materials it contains, which is used to control the charging process and prevent acciden...

AI Technical Summary

Problems solved by technology

However, because the working space is very narrow, this method can only remove a part of the ash, if no measures are taken, the ash accumulation period will be shorter and shorter

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