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Mechanical vacuum pump system and control method thereof

A technology of mechanical vacuum pumps and control methods, which is applied to mechanical equipment, pumps, machines/engines, etc., and can solve problems such as high production costs, high construction costs, and complex structures

Active Publication Date: 2022-03-15
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the technical problem that the structure is more complex, the construction cost is higher and the production cost is higher

Method used

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  • Mechanical vacuum pump system and control method thereof
  • Mechanical vacuum pump system and control method thereof
  • Mechanical vacuum pump system and control method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] See figure 1 , figure 2 and image 3 , figure 1 It is a schematic diagram of a mechanical vacuum pump system provided by an embodiment of the present invention. Figure 1 , figure 2 It is a schematic diagram of a mechanical vacuum pump system provided by an embodiment of the present invention. Figure II , image 3 It is a schematic diagram of a mechanical vacuum pump system provided by an embodiment of the present invention. Figure 3 . A mechanical vacuum pump system provided by the embodiment of the present invention includes a first RH vacuum refining furnace 1, a second RH vacuum refining furnace 2, a vacuum pump mechanism and a valve mechanism. Two RH vacuum refining furnaces 2, vacuum pump mechanism and valve mechanism are explained in detail:

[0029] For the first RH vacuum refining furnace 1:

[0030] The first RH vacuum refining furnace 1 can be used to process the first target molten steel, and the first target molten steel includes light-treated ...

Embodiment 2

[0043] See Figure 4 , Figure 4 This is a flowchart of a control method of a mechanical vacuum pump system provided by an embodiment of the present invention. Embodiment 2 of the present invention provides a control method of a mechanical vacuum pump system, including: step S1, when the first RH vacuum refining furnace 1 is in a deep At the end of the vacuum state, and when the second RH vacuum refining furnace 2 is in the pre-pumping state, open the first control valve 41, the second control valve 42, the third control valve 43, the ninth control valve 49 and the tenth control valve 50, Close the fourth control valve 44, the fifth control valve 45, the sixth control valve 46, the seventh control valve 47 and the eighth control valve 48, and open the first stage pump 31, the second stage pump 32, the first set of third stage Stage pump 33, first set of fourth stage pump 34 and second set of fourth stage pump 36, close the second set of third stage pump 35;

[0044] Step S2,...

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Abstract

The invention discloses a mechanical vacuum pump system and a control method thereof, and belongs to the technical field of steelmaking vacuum refining in the metallurgical industry. The mechanical vacuum pump system comprises a first RH vacuum refining furnace, a second RH vacuum refining furnace, a vacuum pump mechanism and a valve mechanism; the vacuum pump mechanism comprises a first-stage pump, a second-stage pump, a first set of third-stage pump, a first set of fourth-stage pump, a second set of third-stage pump and a second set of fourth-stage pump; the first-stage pump is respectively connected with the first RH vacuum refining furnace and the second RH vacuum refining furnace; the second-stage pump is connected with the first-stage pump; the first set of third-stage pump is connected with the second-stage pump; the first set of fourth-stage pump is respectively connected with the first set of third-stage pump, the second-stage pump and the first RH vacuum refining furnace; the second set of third-stage pump is connected with the second-stage pump; and the second set of fourth-stage pump is respectively connected with the second set of third-stage pump, the second-stage pump and the second RH vacuum refining furnace. The technical effects that the structure is simplified, and the construction cost and the production cost are reduced are achieved.

Description

technical field [0001] The invention belongs to the technical field of steelmaking vacuum refining in the metallurgical industry, and particularly relates to a mechanical vacuum pump system and a control method thereof. Background technique [0002] With the continuous expansion of users' demand for steel varieties and the increasing requirements for steel quality, RH series vacuum treatment technology has become one of the effective means to expand product range and improve product quality. The vacuum pump is the core component of the RH vacuum refining furnace. Due to the excellent low operating cost, energy saving and environmental protection effect of the RH vacuum refining device of the all-dry mechanical vacuum pump, the number of RH vacuum refining devices using the all-dry mechanical vacuum pump is growing rapidly. [0003] At present, in the existing vacuum refining technology for steelmaking in the metallurgical industry, steam jet pumps are usually used, or becaus...

Claims

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Application Information

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IPC IPC(8): C21C7/10F04C23/00F04C25/02F04C28/02
CPCC21C7/10F04C25/02F04C23/001F04C23/005F04C28/02Y02P10/20
Inventor 严淑许海虹欧洪林
Owner WISDRI ENG & RES INC LTD