Water-cooling inert gas furnace cover

Abstract

The invention discloses a water-cooling inert gas furnace cover. The water-cooling inert gas furnace cover comprises a furnace cover supporting frame, a furnace cover ring and an upper furnace cover hood, wherein the furnace cover ring is fixedly arranged on the furnace cover supporting frame; the upper furnace cover hood is fixedly arranged on the top end of the furnace cover ring and is provided with a main smoke discharge pipeline with a skirt hood branch flue; the bottom of the outer wall of the furnace cover ring is provided with a furnace cover skirt hood I, a furnace cover skirt hood II, a furnace cover skirt hood III, a first-layer flue and a second-layer flue; the first-layer flue is arranged between the furnace cover skirt hood I and the furnace cover skirt hood II, and the second-layer flue is arranged between the furnace cover skirt hood II and the furnace cover skirt hood III; and the first-layer flue is communicated with the interior of the furnace cover ring, the second-layer flue is communicated with the first-layer flue, and the main smoke discharge pipeline and the second-layer flue are communicated through the skirt hood branch flue. The water-cooling inert gas furnace cover provided by the invention has the advantage that smoke in a whole furnace and external air absorbed in the skirt hoods are uniformly pumped.

Description

technical field [0001] The invention belongs to the technical field of furnace covers of LF furnaces (namely, ladle refining furnaces), and in particular relates to a water-cooled inert gas furnace cover. Background technique [0002] The water-cooled inert gas furnace cover is the core key equipment for the LF furnace. The structure and function of the water-cooled inert gas furnace cover directly affect the quality of molten steel refining and dust removal of the LF furnace. It is located above the ladle when it is working and can be lifted with the furnace cover lifting mechanism . [0003] At present, water-cooled inert gas furnace covers are commonly used in LF furnaces in domestic steelmaking workshops such as figure 1 As shown, the structure of the furnace cover is a single-layer flue structure covering above the ladle mouth. The single-layer flue of the skirt is connected through the branch flue of the skirt located directly below the main smoke exhaust pipe on the ...

AI Technical Summary

Problems solved by technology

[0004] Its shortcomings are: because the single-layer flue of the skirt cover is not a sealed passage, and only one smoking port is connected with the main exhaust pipe on the upper part of the furnace cover, the smoking ability far from the smoking port of the branch channel flue of the skirt cover is very low. Weak, so that the sealing and dust removal effect of LF furnace refining is greatly reduced, thus directly affecting the quality of LF furnace molten steel refining and dust removal

In addition, there is no active dust removal port on the top of the single-layer flue of the skirt cover, which cannot remove the smoke and dust accumulated inside the flue, which makes the flow of flue gas more resistant.

The top layer of this kind of furnace cover is set as an integral water-cooled plate, and this structure can only be applied to the refining operation of the water-cooled inert gas furnace cover of medium and small LF furnaces (such as ≤120tLF furnace).

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