CN107541586A - The vacuum pump system that a kind of three-level booster pump combines with water ring pump - Google Patents
The vacuum pump system that a kind of three-level booster pump combines with water ring pump Download PDFInfo
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- CN107541586A CN107541586A CN201710587350.6A CN201710587350A CN107541586A CN 107541586 A CN107541586 A CN 107541586A CN 201710587350 A CN201710587350 A CN 201710587350A CN 107541586 A CN107541586 A CN 107541586A
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- pump
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Abstract
The vacuum pump system that a kind of three-level booster pump combines with water ring pump, including with producing the B1 booster pumps being connected at waste gas, B1 supercharging pump output terminals are sequentially connected B2 booster pumps, B3 booster pumps, C1 condensers and water ring pump assembly, each water ring pump exhaust inlet of water ring pump assembly is connected with waste gas outlet, and water ring pump assembly is W4 water ring pump assemblys；After mode of operation in water ring pump is selected and confirmed, start vacuum system；Vavuum pumps at different levels are according to vacuum pressure value order start and stop vavuum pumps at different levels set in advance, until reaching the vacuum of technological requirement；The present invention, which has, meets refinery practice, while meets the characteristics of the needs of energy-efficient.
Description
Technical field
The present invention relates to SECONDARY REFINING IN A VACUUM CHAMBER field outside molten steel stove, more particularly to a kind of three-level booster pump combines with water ring pump
Vacuum pump system.
Background technology
The nucleus equipment of steel liquid vacuum refining system is pumping equipment, and the tradition for steel liquid vacuum refining system is true
It is vapor jet vacuum pump that sky, which obtains equipment,.The characteristics of steam jet pump is that rate of air sucked in required is big, pumping speed is fast, maintenance cost is low, but is lacked
Point is that energy consumption is higher, strict to quality of steam requirement, influences production run cost.In recent years, water ring pump combines with steam pump
Pumping equipment also has many application examples.In the unit that steam jet pump forms with water ring pump, water ring pump is row's air
Fore pump.If water ring pump is single-stage pump (example：SZ, SK series) its working vacuum degree (residual voltage) is about 140mmHg
(18.67kPa), final vacuum (residual voltage) are 60~80mmHg (8.0~10.67kPa), first order steam can only be replaced to spray
Device；If water ring pump is two-stage pump (example：2SK, 2BE series) its working vacuum degree (residual voltage) be about 40~60mmHg (5.33~
8.0kPa), final vacuum (residual voltage) is 10mmHg (1.33kPa), then may substitute two-stage ejector stage vavuum pump.Known water
Only it is the final stage steam pump that steam-to-vacuum pumping system is substituted with water ring pump in the combination application of ring pump and steam pump.
The content of the invention
To overcome above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of three-level booster pump and water ring pump group
The vacuum pump system of conjunction, the steam of whole vacuum pump system in the course of the work and condensation water consumption are fully saved, meets refining
Technique, while meet the needs of energy-efficient.
In order to achieve the above object, the technical solution adopted by the present invention is：
The vacuum pump system that a kind of three-level booster pump combines with water ring pump, including be pressurized with producing the B1 being connected at waste gas
Pump 1, the air inlet of the exhaust outlet output end of B1 booster pumps 1 connection B2 booster pumps 2, the air inlet of the exhaust outlet of B2 booster pumps 2 connection B3 booster pumps 3
Mouth, the air inlet of the exhaust outlet of B3 booster pumps 3 connection C1 condensers 4, the exhaust outlet of C1 condensers 4 connection water ring pump assembly air inlet, institute
Each water ring pump exhaust inlet of water ring pump assembly stated is connected with waste gas outlet.
Generally formed in described W4 water ring pump assemblys by 4~8.But quantity also can be according to rate of air sucked in required change and water ring
The performance of pump difference and change, this programme illustrates by taking 6 water ring pumps as an example.
Described W4 water ring pump assemblys are divided into W4a pump groups 5 and W4b pump groups 6, and W4a pump groups 5 are mutual simultaneously with W4b pump groups 6
Connection connects, and is also parallel relationship between each water ring pump of described W4a pump groups 5 and the inside of W4b pump groups 6.
Each described water ring pump is respectively W4-1 pumps, W4-2 pumps, W4-3 pumps, W4-4 pumps, W4-5 pumps and W4-6 pumps.
Each described water ring pump includes main pump, auxiliary pump and does not participate in the main pump three types taken out in advance, each water ring pump it
Between there is exclusiveness, be only any one type of pump.
Described water ring pump assembly is divided into W4a pump groups 5 and W4b pump groups 6, W4a pump groups 5 be divided into W4b pump groups 6 A row pump,
B row pump and A+Main pump；
Described A row pump is main pump, vacuum of participating in the overall process pump work；Pump supplemented by B row pumps, stop after pump startup is pressurized；A+Row pump belongs to main pump, same with the function phase of A row pumps, but be not involved in it is pre- take out, application of vacuum starts after starting with system, vacuum
The delay adjustmentses time is stopped after reaching setting pressure；
After application of vacuum starts, all water ring pumps of two groups of water ring pump assemblys are all devoted oneself to work；When vacuum reaches
During below 20kPa, B3 booster pumps 3 are opened；When vacuum reaches below 4kPa, B2 booster pumps 2 are opened, then time-delay closing
W4b pump groups 6；When vacuum reaches below 0.8kPa, open B1 booster pumps 1 and continue to vacuumize, being finally reached smelting process will
The vacuum asked；A+The water ring pump of pattern is reaching the vacuum pressure of setting and termination of pumping after the time.
The beneficial effects of the invention are as follows：
The last two-stage jet pump of steam-to-vacuum pumping system is substituted with water ring pump, can save and match somebody with somebody originally with two-stage jet pump
Two condensers of set and related control valve, simultaneously, it is only necessary to provide condensed water, final stage water ring pump assembly for a condenser
Increased consumption of cooling-water can be dropped significantly well below the water that two condensers are consumed, the Design cooling load of water treatment system
It is low.
Compared with original steam vacuum pump system, vavuum pump that new three-level booster pump of the present invention combines with water ring pump
The equipment entirety cost of investment of system is few, and steam consumption quantity is low, can preferably reach energy-saving purpose, reduces molten steel vacuum
The cost of processing.
Vacuum pump system by 3 booster pumps (B1, B2, B3), 1 condenser (C1) and two groups of water ring pump assemblys (W4a,
W4b) form, the space of equipment arrangement is substantially reduced, and enhances the flexibility of vacuum pump system arrangement, can be more
Transformation suitable for carrying out vacuum system in the narrow factory building of the device space.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
The structural principle to the present invention and operation principle make narration in detail below in conjunction with the accompanying drawings.
As shown in Figure 1：The vacuum pump system configuration mode that a kind of water ring pump combines with steam pump, including B1 booster pumps 1, B2
Booster pump 2, B3 booster pumps 3, C1 condensers 4 and water ring pump assembly, B1 booster pumps 1, B2 booster pumps 2, B3 booster pumps 3 are by taking out
Feed channel is connected, and is series relationship, and caused waste gas UNICOM in the entrance and steelmaking process of B1 booster pumps 1, B3 booster pumps 3 go out
Mouth and the UNICOM of C1 condensers 4.An exhaust tube is picked out from the top of C1 condensers 4, accesses two water ring pump assemblys of parallel connection.Each water
Ring pump exhaust outlet convergence be connected on a blast pipe, then with waste gas outlet UNICOM.Corresponding control valve is set on pipeline.
The 4th grade and the 5th grade of jet pump of former 5 grades of Steam Ejector Systems are replaced with water ring pump assembly, and accordingly cancels C2, C3 condenser
With the control valve of correlation.
Consider each side such as system exhaust capacity, vapour booster pump matching relationship and water ring pump performance parameter because
Element, the water ring pump assembly are generally made up of the water ring pump of 4~8 2BE series, are divided into two groups of W4a pump groups 5 and W4b pump groups 6,
The two water ring pump assemblys are parallel relationships.It is also parallel relationship between each water ring pump of each unit.
The present invention design principle be：5 grades of Steam Ejector Systems are sprayed by three-level booster pump and two-stage under normal circumstances
Pump group is into the row pressure point of B3 booster pumps 3 is in 11kPa or so, and conventional water ring pump is typically left in 20kPa from its operating point
The right side, therefore water ring pump is typically used as final stage vavuum pump.If design improves the row pressure point of B3 booster pumps 3 to 15~20kPa when calculating
Section, utilize twin-stage type water ring pump (example：2SK, 2BE series) spy that is not decreased obviously of the exhaust capacity between 15~20kPa
Property, the two-stage jet pump in steam-to-vacuum pump is replaced with water ring pump, then can replace former 5 grades of steam jet pumps by water ring pump completely
The 4th grade of system and the 5th grade of jet pump, and accordingly cancel the control valve of C2 condensers, C3 condensers and correlation, thus
To a kind of new vacuum pump system being made up of three-level booster pump+water ring pump.The quantity of water ring pump configuration is decided by vacuum system
The requirement for exhaust capacity of uniting and the type selecting of water ring pump.
Water ring pump in a kind of vacuum pump system of described new three-level booster pump+water ring pump composition is in practical application
When need to carry out the model selection of pump, for details see attached table 1 (so that 6 water ring pumps make 4 grades of pumps as an example).Wherein, A row pump is main pump, whole
Participate in vacuum pump work；Pump supplemented by B row pumps, stop after pump startup is pressurized；A+Belong to main pump (A row), the function phase with A row pumps
Together, but be not involved in it is pre- take out, application of vacuum starts after starting with system, vacuum reach setting pressure after the delay adjustmentses time stop
Work.Described setting pressure is in Pa+Place is manually entered, and described setting time is in Ta+Place is manually entered.
A kind of active operation mode of the vacuum pump system of described new three-level booster pump+water ring pump composition, is shown in attached
Table 2.After mode of operation in final pumps (water ring pump) is selected and confirmed, start vacuum system.Vavuum pumps at different levels according to setting in advance
Fixed vacuum pressure value order start and stop vavuum pumps at different levels, until reaching the vacuum of technological requirement.
It is characteristic of the invention that the 4th grade and the 5th grade injection of former 5 grades of steam-to-vacuum pumping systems is replaced with water ring pump assembly
Pump, save C2, C3 condenser and the final stage steam jet pump control valve related on condensate line, water treatment system
Load be greatly reduced；The space of whole vacuum pump system equipment arrangement is substantially reduced, and the cost of civil engineering steel structure is bright
It is aobvious to reduce, it can be more applicable to carry out the transformation of vacuum system in the narrow factory building of the device space.It is this special true
The steam consumption quantity of empty pumping system is lower, also smaller to the demand of condensed water, can preferably reach energy-saving purpose, drop
The cost of low molten steel application of vacuum.
As shown in table 2：
After application of vacuum starts, all water ring pumps of two groups of water ring pump assemblys are all devoted oneself to work；When vacuum reaches
During below 20kPa, B3 booster pumps 3 are opened；When vacuum reaches below 4kPa, B2 booster pumps 2 are opened, then time-delay closing
W4b pump groups 6；When vacuum reaches below 0.8kPa, open B1 booster pumps 1 and continue to vacuumize, being finally reached smelting process will
The vacuum asked.A+The water ring pump of pattern is reaching the vacuum pressure of setting and termination of pumping after the time.System running pattern refers to attached
Table 2《The operation signal of vacuum pump system mode of operation》.
The vacuum pump system final stage water ring pump mode of operation of table 1 selects
The operation signal of the vacuum pump system mode of operation of table 2
Claims (6)
1. the vacuum pump system that a kind of three-level booster pump combines with water ring pump, it is characterised in that including being connected with producing at waste gas
Logical B1 booster pumps (1), B1 booster pumps (1) exhaust outlet output end connection B2 booster pumps (2) air inlet, B2 booster pumps (2) exhaust
Mouth connection B3 booster pumps (3) air inlet, B3 booster pumps (3) exhaust outlet connection C1 condensers (4) air inlet, C1 condensers (4) row
Gas port connects water ring pump assembly air inlet, and each water ring pump exhaust inlet of described water ring pump assembly is connected with waste gas outlet.
2. the vacuum pump system that a kind of three-level booster pump according to claim 1 combines with water ring pump, it is characterised in that institute
The water ring pump assembly stated is W4 water ring pump assemblys, is generally formed in described W4 water ring pump assemblys by 4~8.But quantity also may be used
Changed according to the difference of the performance of the change of rate of air sucked in required and water ring pump.
3. the vacuum pump system that a kind of three-level booster pump according to claim 2 combines with water ring pump, it is characterised in that institute
The W4 water ring pump assemblys stated are divided into W4a pump groups (5) and W4b pump groups (6), and W4a pump groups (5) are in parallel between each other with W4b pump groups (6)
It is also parallel relationship between the internal each water ring pump of connection, described W4a pump groups (5) and W4b pump groups (6).
4. the vacuum pump system that a kind of three-level booster pump according to claim 1 combines with water ring pump, it is characterised in that institute
Each water ring pump stated is respectively W4-1 pumps, W4-2 pumps, W4-3 pumps, W4-4 pumps, W4-5 pumps and W4-6 pumps.
5. the vacuum pump system that a kind of three-level booster pump according to claim 1 combines with water ring pump, it is characterised in that institute
Each water ring pump stated includes main pump, auxiliary pump and does not participate in the main pump three types taken out in advance, has between each water ring pump exclusive
Property, it is only any one type of pump.
6. the vacuum pump system that a kind of three-level booster pump according to claim 1 combines with water ring pump, described water ring pump
Unit is divided into W4a pump groups (5) and W4b pump groups (6), and W4a pump groups (5) in W4b pump groups (6) with being divided into A row pump, B row pump and A+It is main
Pump；
Described A row pump is main pump, vacuum of participating in the overall process pump work；Pump supplemented by B row pumps, stop after pump startup is pressurized；A+Row pump
Belong to main pump, it is same with the function phase of A row pumps, but be not involved in it is pre- take out, application of vacuum starts after starting with system, vacuum reach set
The delay adjustmentses time is stopped after constant-pressure；
After application of vacuum starts, all water ring pumps of two groups of water ring pump assemblys are all devoted oneself to work；When vacuum reaches 20kPa
When following, B3 booster pumps (3) are opened；When vacuum reaches below 4kPa, B2 booster pumps (2) are opened, then time-delay closing W4b
Pump group (6)；When vacuum reaches below 0.8kPa, open B1 booster pumps (1) and continue to vacuumize, being finally reached smelting process will
The vacuum asked；A+The water ring pump of pattern is reaching the vacuum pressure of setting and termination of pumping after the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710587350.6A CN107541586A (en) | 2017-07-18 | 2017-07-18 | The vacuum pump system that a kind of three-level booster pump combines with water ring pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710587350.6A CN107541586A (en) | 2017-07-18 | 2017-07-18 | The vacuum pump system that a kind of three-level booster pump combines with water ring pump |
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| CN107541586A true CN107541586A (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710587350.6A Pending CN107541586A (en) | 2017-07-18 | 2017-07-18 | The vacuum pump system that a kind of three-level booster pump combines with water ring pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878374A (en) * | 2020-07-14 | 2020-11-03 | 中国重型机械研究院股份公司 | Control method of mechanical vacuum pump system based on RH refining process |
Citations (6)
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| JP2002146430A (en) * | 2000-11-06 | 2002-05-22 | Nippon Steel Corp | Multistage vacuum exhausting apparatus and vacuum exhausting method |
| CN101638728A (en) * | 2009-08-27 | 2010-02-03 | 抚顺钛业有限公司 | Vacuum distillation system for producing titanium sponge by adopting magnesium reduction distillation furnace |
| CN103305662A (en) * | 2013-05-31 | 2013-09-18 | 中冶南方工程技术有限公司 | Vacuum system for vacuum melting |
| CN203462078U (en) * | 2013-09-06 | 2014-03-05 | 中国重型机械研究院股份公司 | Five-stage vacuum pump configuration structure |
| CN104946856A (en) * | 2015-07-20 | 2015-09-30 | 中国重型机械研究院股份公司 | Multi-stage water vapor injecting pump arrangement mode |
| CN207109035U (en) * | 2017-07-18 | 2018-03-16 | 中国重型机械研究院股份公司 | The vacuum pump apparatus that a kind of three-level booster pump combines with water ring pump |
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2017
- 2017-07-18 CN CN201710587350.6A patent/CN107541586A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002146430A (en) * | 2000-11-06 | 2002-05-22 | Nippon Steel Corp | Multistage vacuum exhausting apparatus and vacuum exhausting method |
| CN101638728A (en) * | 2009-08-27 | 2010-02-03 | 抚顺钛业有限公司 | Vacuum distillation system for producing titanium sponge by adopting magnesium reduction distillation furnace |
| CN103305662A (en) * | 2013-05-31 | 2013-09-18 | 中冶南方工程技术有限公司 | Vacuum system for vacuum melting |
| CN203462078U (en) * | 2013-09-06 | 2014-03-05 | 中国重型机械研究院股份公司 | Five-stage vacuum pump configuration structure |
| CN104946856A (en) * | 2015-07-20 | 2015-09-30 | 中国重型机械研究院股份公司 | Multi-stage water vapor injecting pump arrangement mode |
| CN207109035U (en) * | 2017-07-18 | 2018-03-16 | 中国重型机械研究院股份公司 | The vacuum pump apparatus that a kind of three-level booster pump combines with water ring pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878374A (en) * | 2020-07-14 | 2020-11-03 | 中国重型机械研究院股份公司 | Control method of mechanical vacuum pump system based on RH refining process |
| CN111878374B (en) * | 2020-07-14 | 2021-12-24 | 中国重型机械研究院股份公司 | Control method of mechanical vacuum pump system based on RH refining process |
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