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Segmented type VD (Vacuum Degassing) mechanical vacuum system and operating method thereof

A vacuum system, segmented technology, applied in the field of smelting equipment, can solve the problems of long vacuum time, rising power consumption cost of smelting furnace in front refining furnace, inability to meet the pursuit of production efficiency and production cost of iron and steel enterprises, and avoid dust fire effect

Inactive Publication Date: 2019-07-19
JIANGSU LIANFENG ENERGY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The vacuum time directly affects the production rhythm, and it is prone to flow blocking in the subsequent continuous casting
Long vacuum time is also likely to increase the power consumption cost of the front refining furnace
Therefore, the traditional straight-through VD vacuum system can no longer meet the pursuit of production efficiency and production cost of steel enterprises.

Method used

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  • Segmented type VD (Vacuum Degassing) mechanical vacuum system and operating method thereof
  • Segmented type VD (Vacuum Degassing) mechanical vacuum system and operating method thereof

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Embodiment Construction

[0022] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.

[0023] As shown in the figure, a segmented VD mechanical vacuum system includes a vacuum tank section, a dust removal section and a vacuum pump room section connected in sequence. The first main shut-off valve 1 is connected between the vacuum tank section and the dust removal section, and the dust removal section and The vacuum pump room section is connected with a second main...

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Abstract

The invention provides a segmented type VD (Vacuum Degassing) mechanical vacuum system. The segmented type VD mechanical vacuum system comprises a vacuum tank section, a dust removal section and a vacuum pump room, wherein the vacuum tank section, the dust removal section and the vacuum pump room are sequentially connected; a first main check valve is connected between the vacuum tank section andthe dust removal section; and the dust removal section and the vacuum pump room section are connected with a second main check valve. Compared with the prior art, the segmented type VD mechanical vacuum system disclosed by the invention has the advantages that through design of the segmented vacuum system, a dust removal device can realize independent nitrogen vacuum-breaking and can effectively avoid the dust firing caused by air vacuum-breaking; and due to the segmented design, quick alternative smelting can be realized, so that the vacuum converter-time switching time is extremely short, lateral vacuum-breaking of a tank body is only required, a vacuum pump group and a dust removal side can keep a vacuum state, and the secondary vacuum time can be shortened by 2 minutes to 3 minutes atmaximum, so that the segmented type VD mechanical vacuum system can be put into production.

Description

technical field [0001] The invention relates to the technical field of smelting equipment, in particular to a segmented VD mechanical vacuum system and an operating method thereof. Background technique [0002] VD furnace mechanical pumps are widely used in the market due to their obvious energy-saving advantages. However, most iron and steel enterprises VD vacuum mechanical furnaces are faced with the problems of long vacuum time and flammable bag dust removal. The vacuum time directly affects the production rhythm, and it is prone to flow blocking in the subsequent continuous casting. Long vacuum time is also likely to increase the power consumption cost of the previous refining furnace. Therefore, the traditional straight-through VD vacuum system can no longer meet the pursuit of production efficiency and production cost of iron and steel enterprises. Contents of the invention [0003] To solve the above problems, the present invention discloses a segmented VD mechani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/10
CPCC21C7/10
Inventor 巫恩伟刘昭宁范震宇陈程付涛徐明
Owner JIANGSU LIANFENG ENERGY EQUIP