CN103468880A - Five-level vacuum pump configuration system and application thereof - Google Patents
Five-level vacuum pump configuration system and application thereof Download PDFInfo
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- CN103468880A CN103468880A CN2013104049120A CN201310404912A CN103468880A CN 103468880 A CN103468880 A CN 103468880A CN 2013104049120 A CN2013104049120 A CN 2013104049120A CN 201310404912 A CN201310404912 A CN 201310404912A CN 103468880 A CN103468880 A CN 103468880A
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Abstract
The invention relates to a fiver-level vacuum pump configuration system and an application thereof. The system comprises a B1 booster pump, wherein the inlet and the waste gas inlet of the B1 booster pump are communicated with each other, the B1 booster pump is communicated with the inlet of a C1 condenser by a B2 booster pump and a B3 booster pump, the first outlet of the C1 condenser is connected with the first inlet of a C2 condenser by an S4A injection pump, the second outlet of the C1 condenser is connected with the second inlet of the C2 condenser by an S4B stop valve and an S4B injection pump, the first outlet of the C2 condenser is connected with the inlet of a C3 condenser sequentially by an S5A stop valve and an S5A injection pump, the outlet of the C3 condenser is communicated with a waste gas outlet by the S5A tail gas stop valve, and the second outlet of the CS condenser is divided into two paths to be respectively communicated with the waste gas outlet by a pump stop valve and a water ring pump. According to the invention, the technical problem that steam quantity generated by converter steelmaking cannot maintain steam consumption of a full-steam vacuum pump system of a vacuum external refining device of the same tonnage is solved, and the investment problem of overhigh construction cost of a full-mechanical vacuum pump system is avoided.
Description
Technical field
The present invention relates to the vacuum technique field of Steel industry, be specifically related to a kind of Pyatyi vacuum pump configuration-system and application thereof.
Background technology
Along with the center of gravity of Steel industry, from the growth of devoting exclusive attention to output, turning to pursue increases kind and improves quality, and the outer vacuum refinement of molten steel stove will further be popularized and develop.The core of vacuum refinement is whole vacuum pump system, and its performance has not only determined the effect of vacuum refinement, also affects greatly the quality of product and the profit of enterprise.Vacuum pump has a variety of configurations, for different steelworkss, need to select different configurations in conjunction with our factory's practical situation.Adopt in a large number the steel mill of converter steelmaking for current employing, once the configuration of vacuum pump is selected improperly because of inconsiderate entirely causing, the vacuum tightness that will make vacuum pump can't reach design causes vacuum metling can't normally carry out or seriously strengthen the cost of investment of vacuum pump system equipment.
At present, in the vacuum pump configuration type selecting of vacuum external refining in the known steel mill adopting converter steelmaking, not to adopt pressure decatizing vapour squirt pump vacuum system, adopt exactly full mechanical pump system.While adopting pressure decatizing vapour squirt pump vacuum system, the quantity of steam initial stage produced during due to converter steelmaking can meet the pressure decatizing vapour vacuum pump system consumption of the equipment for vacuum refining of same tonnage substantially, but the increase along with converter lining life, the quantity of steam produced can gradually reduce, will guarantee the normal consumption of pressure decatizing vapour squirt pump vacuum system, the vacuum tightness of design just is difficult to reach requirement.Adopt full mechanical pump system, not only investment is six or seven times of pressure decatizing heat pump system, and safeguards that replacement cost is very high, simultaneously also very high to maintenance personnel's specified quality requirement, at present domestic do not have a steel mill that full mechanical pump system is used good.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of Pyatyi vacuum pump configuration-system and application thereof, the quantity of steam that has not only solved the converter steelmaking generation is not enough to maintain the technical problem of the pressure decatizing vapour vacuum pump system steam consumption of a refining unit outside same tonnage vacuum oven, has also avoided the problem of full oil-sealed rotary pump system Construction high cost simultaneously.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of Pyatyi vacuum pump configuration-system, comprise B1 topping-up pump 1, the entrance of B1 topping-up pump 1 and exhaust gas entrance are communicated with, the entrance of the outlet of B1 topping-up pump 1 and B2 topping-up pump 2 is communicated with, the entrance of the outlet of B2 topping-up pump 2 and B3 topping-up pump 3 is communicated with, the entrance of the outlet of B3 topping-up pump 3 and C1 condenser 4 is communicated with, the first outlet of C1 condenser 4 is connected by the first entrance of S4A squirt pump 6 and C2 condenser 8, the second outlet of C1 condenser 4 is by S4B trip valve 5, the second entrance of S4B squirt pump 7 and C2 condenser 8 is connected, S4B squirt pump 7 and S4A squirt pump 6 adopt pattern in parallel, the first outlet of C2 condenser 8 is successively by S5A trip valve 9, S5A squirt pump 10 is connected with the entrance of C3 condenser 11, the outlet of C3 condenser 11 is communicated with by S5A tail gas trip valve 12 and waste gas outlet, the second outlet of C2 condenser 8 is divided into two-way, lead up to P1 pump trip valve 13, P1 water-ring pump 15 and waste gas outlet are communicated with, another road is by P2 pump trip valve 14, P2 water-ring pump 16 and waste gas outlet are communicated with.
Be equipped with pneumatic cut-off valve between described P1 pump trip valve 13 and P2 pump trip valve 14 and C2 condenser 8.
The application of described Pyatyi vacuum pump configuration-system: when preparing to start vacuum metling, open S5A trip valve 9, S5A squirt pump 10, S5A tail gas trip valve 12, carrying out vacuum tightness takes out in advance, when vacuum tightness reaches 35Kpa when following, open S4B trip valve 5, S4A squirt pump 6, S4B squirt pump 7, make vacuum tightness continue to descend; When dropping to 8Kpa when following, open B3 topping-up pump 3; Vacuum tightness continues to drop to 2.7Kpa when following, first open B2 topping-up pump 2 and P1 pump trip valve 13 and P1 water-ring pump 15, perhaps P2 pump trip valve 14 and P2 water-ring pump 16, then S4B trip valve 5, S4B squirt pump 7, S5A trip valve 9, S5A squirt pump 10 and S5A tail gas trip valve 12 are closed in time delay in 5 seconds; When vacuum tightness continues to drop to 0.5Kpa when following, open B1 topping-up pump 1 and continue to vacuumize, finally reach the vacuum tightness of design, guarantee normally carrying out of vacuum metling.
In the process vacuumized, when vacuum tightness drops to 2.7Kpa when following, P1 water-ring pump 15 or P2 water-ring pump 16 in order to electrical actuation power source, the S5A squirt pump 10 that steam is propulsion source is take in replacement, reduce the consumption of vacuum system quantity of steam, the while is lower than water-ring pump as the running cost of the S5A squirt pump 10 of ejector priming.
Technique effect of the present invention is:
The quantity of steam that has solved the converter steelmaking generation is not enough to maintain the technical problem of the pressure decatizing vapour vacuum pump system steam consumption of a refining unit outside same tonnage vacuum oven, has also avoided the investment problem of full oil-sealed rotary pump system Construction high cost simultaneously.The present invention adopts Pyatyi vacuum pump configuration, utilizes vapour pump to add that the pattern of water-ring pump can guarantee that vacuum pump system works always, meets the vacuum tightness requirement of design, and vacuum metling is normally carried out, and can not be interrupted.The workload of maintenance and maintenance personnel's specified quality requirement have been alleviated simultaneously.
The accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Referring to accompanying drawing, a kind of Pyatyi vacuum pump configuration-system, comprise B1 topping-up pump 1, the entrance of B1 topping-up pump 1 and exhaust gas entrance are communicated with, the entrance of the outlet of B1 topping-up pump 1 and B2 topping-up pump 2 is communicated with, the entrance of the outlet of B2 topping-up pump 2 and B3 topping-up pump 3 is communicated with, the entrance of the outlet of B3 topping-up pump 3 and C1 condenser 4 is communicated with, the first outlet of C1 condenser 4 is connected by the first entrance of S4A squirt pump 6 and C2 condenser 8, the second outlet of C1 condenser 4 is by S4B trip valve 5, the second entrance of S4B squirt pump 7 and C2 condenser 8 is connected, S4B squirt pump 7 and S4A squirt pump 6 adopt pattern in parallel, the first outlet of C2 condenser 8 is successively by S5A trip valve 9, S5A squirt pump 10 is connected with the entrance of C3 condenser 11, the outlet of C3 condenser 11 is communicated with by S5A tail gas trip valve 12 and waste gas outlet, the second outlet of C2 condenser 8 is divided into two-way, lead up to P1 pump trip valve 13, P1 water-ring pump 15 and waste gas outlet are communicated with, another road is by P2 pump trip valve 14, P2 water-ring pump 16 and waste gas outlet are communicated with.
Be equipped with pneumatic cut-off valve between described P1 pump trip valve 13 and P2 pump trip valve 14 and C2 condenser 8.
The mode of operation of described Pyatyi vacuum pump configuration-system is: when preparing to start vacuum metling, open S5A trip valve 9, S5A squirt pump 10, S5A tail gas trip valve 12, carrying out vacuum tightness takes out in advance, when vacuum tightness reaches 35Kpa when following, open S4B trip valve 5, S4A squirt pump 6, S4B squirt pump 7, make vacuum tightness continue to descend; When dropping to 8Kpa when following, open B3 topping-up pump 3; Vacuum tightness continues to drop to 2.7Kpa when following, first open B2 topping-up pump 2 and P1 pump trip valve 13 and P1 water-ring pump 15, perhaps P2 pump trip valve 14 and P2 water-ring pump 16, then S4B trip valve 5, S4B squirt pump 7, S5A trip valve 9, S5A squirt pump 10 and S5A tail gas trip valve 12 are closed in time delay in 5 seconds; When vacuum tightness continues to drop to 0.5Kpa when following, open B1 topping-up pump 1 and continue to vacuumize, finally reach the vacuum tightness of design, guarantee normally carrying out of vacuum metling.
In the process vacuumized, when vacuum tightness drops to 2.7Kpa when following, P1 water-ring pump 15 or P2 water-ring pump 16 in order to electrical actuation power source, the S5A squirt pump 10 that steam is propulsion source is take in replacement, reduce the consumption of vacuum system quantity of steam, while is more much lower than water-ring pump as the running cost of the S5A squirt pump 10 of ejector priming, does so also and can effectively reduce steel-making cost.
S4B squirt pump 7 and 6 parallel connections of S4A squirt pump, the exhaust capacity of increase four-stage pump while simultaneously opening, shorten and arrive bleeding the time of design vacuum tightness.While spending to certain vacuum, it is closed, reduce the consumption of vacuum system quantity of steam.
The parts that the present embodiment does not describe in detail and structure, well-known components and common structure or the conventional means of the genus industry, narration one by one here.
The present invention and vacuum field, particularly adopt in a large number in the steel mill of converter steelmaking, the quantity of steam produced during converter steelmaking is along with the increase in furnace life will gradually reduce the steam consumption of pressure decatizing vapour vacuum pump system in the vacuum external refining that can't meet same tonnage, at this moment just need to be under the prerequisite that meets the vacuum tightness design requirements fully, reduce the steam consumption of vacuum pump system, perhaps abandon pressure decatizing vapour vacuum pump pattern, use full oil-sealed rotary pump pattern instead.The present invention adopts a kind of novel Pyatyi vacuum pump configuration, the quantity of steam that has not only solved the converter steelmaking generation is not enough to maintain the technical problem of the pressure decatizing vapour vacuum pump system steam consumption of a refining unit outside same tonnage vacuum oven, has also avoided the investment problem of full oil-sealed rotary pump system Construction high cost simultaneously.
Claims (4)
1. a Pyatyi vacuum pump configuration-system, comprise B1 topping-up pump (1), it is characterized in that: the entrance of B1 topping-up pump (1) and exhaust gas entrance are communicated with, the entrance of the outlet of B1 topping-up pump (1) and B2 topping-up pump (2) is communicated with, the entrance of the outlet of B2 topping-up pump (2) and B3 topping-up pump (3) is communicated with, the entrance of the outlet of B3 topping-up pump (3) and C1 condenser (4) is communicated with, the first outlet of C1 condenser (4) is connected with the first entrance of C2 condenser (8) by S4A squirt pump (6), the second outlet of C1 condenser (4) is by S4B trip valve (5), S4B squirt pump (7) is connected with the second entrance of C2 condenser (8), S4B squirt pump (7) and S4A squirt pump (6) adopt pattern in parallel, the first outlet of C2 condenser (8) is successively by S5A trip valve (9), S5A squirt pump (10) is connected with the entrance of C3 condenser (11), the outlet of C3 condenser (11) is communicated with by S5A tail gas trip valve (12) and waste gas outlet, the second outlet of C2 condenser (8) is divided into two-way, lead up to P1 pump trip valve (13), P1 water-ring pump (15) and waste gas outlet are communicated with, another road is by P2 pump trip valve (14), P2 water-ring pump (16) and waste gas outlet are communicated with.
2. a kind of Pyatyi vacuum pump configuration-system according to claim 1, is characterized in that, between described P1 pump trip valve (13) and P2 pump trip valve (14) and C2 condenser (8), is equipped with pneumatic cut-off valve.
3. the application of a kind of Pyatyi vacuum pump configuration-system according to claim 1 and 2, it is characterized in that, when preparing to start vacuum metling, open S5A trip valve (9), S5A squirt pump (10), S5A tail gas trip valve (12), carrying out vacuum tightness takes out in advance, when vacuum tightness reaches 35Kpa when following, open S4B trip valve (5), S4A squirt pump (6), S4B squirt pump (7), make vacuum tightness continue to descend; When dropping to 8Kpa when following, open B3 topping-up pump (3); Vacuum tightness continues to drop to 2.7Kpa when following, first open B2 topping-up pump (2) and P1 pump trip valve (13) and P1 water-ring pump (15), perhaps P2 pump trip valve (14) and P2 water-ring pump (16), then S4B trip valve (5), S4B squirt pump (7), S5A trip valve (9), S5A squirt pump (10) and S5A tail gas trip valve (12) are closed in time delay in 5 seconds; When vacuum tightness continues to drop to 0.5Kpa when following, open B1 topping-up pump (1) and continue to vacuumize, finally reach the vacuum tightness of design, guarantee normally carrying out of vacuum metling.
4. the application of a kind of Pyatyi vacuum pump configuration-system according to claim 1 according to claim 3, it is characterized in that: in the process vacuumized, when vacuum tightness drops to 2.7Kpa when following, P1 water-ring pump (15) or P2 water-ring pump (16) in order to electrical actuation power source, the S5A squirt pump (10) that steam is propulsion source is take in replacement, reduce the consumption of vacuum system quantity of steam, the while is lower than water-ring pump as the running cost of the S5A squirt pump (10) of ejector priming.
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| CN2013104049120A CN103468880A (en) | 2013-09-06 | 2013-09-06 | Five-level vacuum pump configuration system and application thereof |
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| CN2013104049120A CN103468880A (en) | 2013-09-06 | 2013-09-06 | Five-level vacuum pump configuration system and application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820604A (en) * | 2014-01-27 | 2014-05-28 | 上海零澜机械科技有限公司 | Vacuum pumping system for vacuum degassing smelting furnaces |
| 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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820604A (en) * | 2014-01-27 | 2014-05-28 | 上海零澜机械科技有限公司 | Vacuum pumping system for vacuum degassing smelting furnaces |
| CN103820604B (en) * | 2014-01-27 | 2018-08-17 | 上海伊莱茨真空技术有限公司 | A kind of pumped vacuum systems for vacuum outgas smelting furnace |
| 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 |
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Application publication date: 20131225 |