CN103305662A - Vacuum system for vacuum melting - Google Patents
Vacuum system for vacuum melting Download PDFInfo
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- CN103305662A CN103305662A CN2013102150672A CN201310215067A CN103305662A CN 103305662 A CN103305662 A CN 103305662A CN 2013102150672 A CN2013102150672 A CN 2013102150672A CN 201310215067 A CN201310215067 A CN 201310215067A CN 103305662 A CN103305662 A CN 103305662A
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Abstract
The invention relates to a vacuum system for vacuum melting. The vacuum system comprises a first-stage steam-jet pump (3), a second-stage steam-jet pump (4), a third-stage steam-jet pump (5), a fourth-stage steam-jet pump (7), a fifth-stage steam-jet pump (10), a first-stage condenser (6) and a second-stage condenser (9) which are connected in series with one another, and also comprises a third-stage condenser (12) and a liquid ring pump unit (13), wherein the liquid ring pump unit (13) and the fifth-stage steam-jet pump (10) are connected in parallel between the second-stage condenser (9) and the third-stage condenser (12); and the liquid ring pump unit (13) comprises a plurality of liquid ring pumps which are connected in parallel with one another. The vacuum system provided by the invention runs flexibly and saves energy; and a very practical solution is supplied to improvement of energy conservation and emission reduction of most full-steam-jet-pump vacuum systems in steel factories in China.
Description
Technical field
The present invention relates to make steel the vacuum refining process field, more particularly, relate to a kind of vacuum system for vacuum metling.
Background technology
Along with the development of Chinese national economy, the user constantly enlarges the demand of rolling shapes, to the also raising day by day of requirement of steel product quality.From technology itself and experience, comprise that the vacuum-treat technology of VD and RH has become a kind of expansion product scope, one of the effective means of improving the quality of products, and vacuum system is exactly one of key equipment wherein.
The vacuum system of the existing vacuum treatment installation of domestic each steel mill has following three kinds of modes substantially:
First kind is to use quantity to account for most pressure decatizing vapour squirt pump vacuum systems, as shown in Figure 1, pressure decatizing vapour squirt pump vacuum system comprises vapour distributor 1, water dispenser 2 and the first step vapor jet pump 3 that is connected in series successively, second stage vapor jet pump 4, third stage vapor jet pump 5, first step condenser 6, fourth stage vapor jet pump 7, second stage condenser 9, level V vapor jet pump 10 and third stage condenser 12.The working steam entrance of vapor jet pump is connected with vapour distributor 1, and water dispenser 2 is connected with condenser, and first step vapor jet pump 3 is connected with vacuum chamber 14, and condenser also is connected with sealed can 15.
Second kind of final stage that is to use comparatively small amt joined the vapor jet pump vacuum system of rotary pump with liquid ring, as shown in Figure 2, compare with first kind of vacuum system, adopt the rotary pump with liquid ring group 13 that is connected in series to be connected with second stage condenser 9, substitute level V vapor jet pump 10 and third stage condenser 12.
The third is to use the full oil-sealed rotary pump vacuum system of minimum number.
The third mode also belongs to emerging technology at present, and each steel mill uses seldom at home, wouldn't do discussion.At first kind and the second way, its energy medium consumes, the equipment reliability of operation, and the workload of safeguarding all is the subject matter that we need consider when type selecting.First kind of mode steam consumption quantity is big, supplies very difficultly, but equipment does not have mechanical moving parts, and maintenance workload is less, moves very reliable.Second way steam consumption quantity is moderate, additionally is furnished with rotary pump with liquid ring, and certain maintenance workload is arranged, and moves also reliablely, but when rotary pump with liquid ring broke down, vacuum system just can't works better.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of vacuum system for vacuum metling is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of vacuum system for vacuum metling, comprise the first step vapor jet pump that is connected in series, second stage vapor jet pump, third stage vapor jet pump, fourth stage vapor jet pump and level V vapor jet pump, be provided with first step condenser between described third stage vapor jet pump and the fourth stage vapor jet pump, be provided with second stage condenser between described fourth stage vapor jet pump and the level V vapor jet pump, described vacuum system also comprises third stage condenser and rotary pump with liquid ring group, described rotary pump with liquid ring group and described level V vapor jet pump are connected in parallel between described second stage condenser and the third stage condenser, and described rotary pump with liquid ring group comprises a plurality of rotary pump with liquid rings that are connected in parallel.
In the vacuum system for vacuum metling of the present invention, also be provided with fourth stage auxiliary steam squirt pump between described first step condenser and the described second stage condenser, described fourth stage auxiliary steam squirt pump and described fourth stage vapor jet pump are connected in parallel.
In the vacuum system for vacuum metling of the present invention, also be provided with the auxilliary vapor jet pump of level V between described second stage condenser and the described third stage condenser, the auxilliary vapor jet pump of described level V and described level V vapor jet pump are connected in parallel.
Implement the vacuum system for vacuum metling of the present invention, have following beneficial effect:
1) when normally producing, for different vacuum system operational modes, utilize the rotary pump with liquid ring group of electricity consumption partly or entirely to replace the level V vapo(u)r blasting pump work of using steam, farthest save steam consumption.
2) when rotary pump with liquid ring group separate unit broke down, vacuum system also can normally be produced.For different vacuum system operational modes, partly or entirely replace level V vapo(u)r blasting pump work with the rotary pump with liquid ring group, saving steam consumption that also can be bigger.
3) when many of rotary pump with liquid ring groups break down, also can normally produce, this moment, vacuum system was moved by pressure decatizing vapour squirt pump mode.
4) flexible, the save energy of vacuum system operation scheme of the present invention, the energy-saving and cost-reducing transformation to quantity in domestic each steel mill accounts for most pressure decatizing vapour squirt pump vacuum systems provides a kind of very practical solution.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of pressure decatizing vapour squirt pump vacuum system in the prior art;
Fig. 2 is the structural representation that final stage is joined the vapor jet pump vacuum system of rotary pump with liquid ring in the prior art;
Fig. 3 is the structural representation that the present invention is used for the vacuum system of vacuum metling.
Embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 3, the vacuum system for vacuum metling of the present invention comprises first step vapor jet pump 3, second stage vapor jet pump 4, third stage vapor jet pump 5, fourth stage vapor jet pump 7, level V vapor jet pump 10, rotary pump with liquid ring group 13, first step condenser 6, second stage condenser 9 and third stage condenser 12.
First step vapor jet pump 3 is connected with vacuum chamber 14, and first step vapor jet pump 3, second stage vapor jet pump 4, third stage vapor jet pump 5, fourth stage vapor jet pump 7 and level V vapor jet pump 10 are connected in series.Be provided with first step condenser 6 between third stage vapor jet pump 5 and the fourth stage vapor jet pump 7, be provided with second stage condenser 9 between fourth stage vapor jet pump 7 and the level V vapor jet pump 10.Rotary pump with liquid ring group 13 and level V vapor jet pump 10 are connected in parallel between second stage condenser 9 and the third stage condenser 12.Rotary pump with liquid ring group 13 comprises a plurality of rotary pump with liquid rings that are connected in parallel.
First step vapor jet pump 3, second stage vapor jet pump 4, third stage vapor jet pump 5, fourth stage vapor jet pump 7 and level V vapor jet pump 10 are connected with vapour distributor 1.Rotary pump with liquid ring group 13, first step condenser 6, second stage condenser 9 and third stage condenser 12 are connected with sealed can 15 with water dispenser 2.
When normally producing, for different vacuum system operational modes, utilize the rotary pump with liquid ring group 12 of electricity consumption partly or entirely to replace level V vapor jet pump 10 work of using steam, farthest save steam consumption.When rotary pump with liquid ring group 12 separate units broke down, vacuum system also can normally be produced.For different vacuum system operational modes, partly or entirely replace 10 work of level V vapor jet pump, saving steam consumption that also can be bigger with rotary pump with liquid ring group 12.When rotary pump with liquid ring group 12 has many to break down, also can normally produce, this moment, vacuum system was moved by pressure decatizing vapour squirt pump mode.
Vacuum system operation scheme of the present invention is flexible, save energy, and the energy-saving and cost-reducing transformation to quantity in domestic each steel mill accounts for most pressure decatizing vapour squirt pump vacuum systems provides a kind of very practical solution.
Further, also be provided with fourth stage auxiliary steam squirt pump 8 between first step condenser 6 and the second stage condenser 9, fourth stage auxiliary steam squirt pump 8 is connected in parallel with fourth stage vapor jet pump 7.Also be provided with the auxilliary vapor jet pump 11 of level V between second stage condenser 9 and the third stage condenser 12, the auxilliary vapor jet pump 11 of level V is connected in parallel with level V vapor jet pump 10.Fourth stage auxiliary steam squirt pump 8 is connected with vapour distributor 1 with the auxilliary vapor jet pump 11 of level V.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (3)
1. vacuum system that is used for vacuum metling, comprise the first step vapor jet pump (3) that is connected in series, second stage vapor jet pump (4), third stage vapor jet pump (5), fourth stage vapor jet pump (7) and level V vapor jet pump (10), be provided with first step condenser (6) between described third stage vapor jet pump (5) and the fourth stage vapor jet pump (7), be provided with second stage condenser (9) between described fourth stage vapor jet pump (7) and the level V vapor jet pump (10), it is characterized in that, described vacuum system also comprises third stage condenser (12) and rotary pump with liquid ring group (13), described rotary pump with liquid ring group (13) and described level V vapor jet pump (10) are connected in parallel between described second stage condenser (9) and the third stage condenser (12), and described rotary pump with liquid ring group (13) comprises a plurality of rotary pump with liquid rings that are connected in parallel.
2. the vacuum system for vacuum metling according to claim 1, it is characterized in that, also be provided with fourth stage auxiliary steam squirt pump (8) between described first step condenser (6) and the described second stage condenser (9), described fourth stage auxiliary steam squirt pump (8) is connected in parallel with described fourth stage vapor jet pump (7).
3. the vacuum system for vacuum metling according to claim 1, it is characterized in that, also be provided with the auxilliary vapor jet pump (11) of level V between described second stage condenser (9) and the described third stage condenser (12), described level V is assisted vapor jet pump (11) and is connected in parallel with described level V vapor jet pump (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102150672A CN103305662A (en) | 2013-05-31 | 2013-05-31 | Vacuum system for vacuum melting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102150672A CN103305662A (en) | 2013-05-31 | 2013-05-31 | Vacuum system for vacuum melting |
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| CN103305662A true CN103305662A (en) | 2013-09-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019017A (en) * | 2014-06-18 | 2014-09-03 | 宝钢工程技术集团有限公司 | Vacuumizing process equipment |
| CN104232847A (en) * | 2014-10-11 | 2014-12-24 | 中冶南方工程技术有限公司 | RH refining furnace vacuum pumping system and using method thereof |
| CN106286200A (en) * | 2015-06-27 | 2017-01-04 | 上海梅山钢铁股份有限公司 | Split type vacuum pump and installation method thereof |
| CN107435086A (en) * | 2017-07-18 | 2017-12-05 | 中国重型机械研究院股份公司 | The vacuum pump system and its application method that a kind of water ring pump combines with steam pump |
| CN107541586A (en) * | 2017-07-18 | 2018-01-05 | 中国重型机械研究院股份公司 | The vacuum pump system that a kind of three-level booster pump combines with water ring pump |
| CN107964576A (en) * | 2017-11-13 | 2018-04-27 | 浙江杭真能源科技股份有限公司 | A kind of vacuum pump system and its method of work for VOD refining furnaces |
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| US5242484A (en) * | 1991-05-02 | 1993-09-07 | Mannesmann Aktiengesellschaft | Plant for the processing of molten steel and method for the operation of such a plant |
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2013
- 2013-05-31 CN CN2013102150672A patent/CN103305662A/en active Pending
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| JPS6436719A (en) * | 1987-07-31 | 1989-02-07 | Kawasaki Steel Co | Method for operating rh type vacuum degassing treating equipment |
| US5242484A (en) * | 1991-05-02 | 1993-09-07 | Mannesmann Aktiengesellschaft | Plant for the processing of molten steel and method for the operation of such a plant |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019017A (en) * | 2014-06-18 | 2014-09-03 | 宝钢工程技术集团有限公司 | Vacuumizing process equipment |
| CN104232847A (en) * | 2014-10-11 | 2014-12-24 | 中冶南方工程技术有限公司 | RH refining furnace vacuum pumping system and using method thereof |
| CN106286200A (en) * | 2015-06-27 | 2017-01-04 | 上海梅山钢铁股份有限公司 | Split type vacuum pump and installation method thereof |
| CN106286200B (en) * | 2015-06-27 | 2018-07-27 | 上海梅山钢铁股份有限公司 | Split type vacuum pump and its installation method |
| CN107435086A (en) * | 2017-07-18 | 2017-12-05 | 中国重型机械研究院股份公司 | The vacuum pump system and its application method that a kind of water ring pump combines with steam pump |
| CN107541586A (en) * | 2017-07-18 | 2018-01-05 | 中国重型机械研究院股份公司 | The vacuum pump system that a kind of three-level booster pump combines with water ring pump |
| CN107964576A (en) * | 2017-11-13 | 2018-04-27 | 浙江杭真能源科技股份有限公司 | A kind of vacuum pump system and its method of work for VOD refining furnaces |
| CN107964576B (en) * | 2017-11-13 | 2019-08-02 | 浙江杭真能源科技股份有限公司 | A kind of vacuum pump system and its working method for VOD refining furnace |
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Application publication date: 20130918 |