RH vacuum system regulating vacuum device and application

Abstract

The invention provides an RH vacuum system regulating vacuum device and application. The device includes a vacuum main valve (11), a first pipeline (21), a second pipeline (22), a bypass pipeline (23)and a bypass valve (14), wherein one end of the vacuum main valve (11) is provided with the first pipeline (21) for connection with an RH vacuum refining device, the other end is provided with the second pipeline (22) for connection with a vacuum pump; the first pipeline (21) and the second pipeline (22) are connected through the bypass pipeline (23), and the bypass valve (14) is disposed on thebypass pipeline (23) and forms a parallel connection relationship with the vacuum main valve (11). By vacuuming a vacuum pump side system after RH vacuum treatment, the bypass valve is adopted to balance the vacuum pressure on both sides of the vacuum main valve, the vacuum pump system can be quickly started, the vacuum system emptying time can be shortened, and the consumption of a medium like steam can be saved, and the effect of the RH processing cycle is shortened.

Description

technical field [0001] The invention relates to the field of iron and steel smelting, in particular, the invention relates to an RH vacuum system regulating vacuum device and its application. Background technique [0002] The RH method, that is, the vacuum cycle degassing method, was jointly developed by the former Ruhrstahl and Heraeus in 1957, so it became the RH method. Vacuum treatment is an important step in refining outside the furnace. The method plays a very important role in providing steel product quality, expanding quality, reducing costs, and optimizing steelmaking production processes. It is currently an indispensable production equipment for steel types such as automotive sheets, electrical steel, and pipeline steel. [0003] When the RH method is used to treat molten steel, the ladle is first sent to the processing position with a ladle car, and the ladle is lifted to make the dipping tube dip a certain distance below the liquid steel surface, and then start t...

AI Technical Summary

Problems solved by technology

Normally, after each furnace is processed, it is necessary to close the vacuum main valve first, so as to perform vacuum breaking operations on the vacuum tank side and the vacuum pump side respectively, and then open the vacuum main valve before the furnace is processed, and restart the vacuum pump for vacuuming, resulting in each furnace The air in the pipeline needs to be evacuated again before processing, which increases the vacuuming time

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