CN103451378A - Automatic dust cleaning system and method for vacuum pipeline of molten steel refining dry type vacuum-pumping system - Google Patents
Automatic dust cleaning system and method for vacuum pipeline of molten steel refining dry type vacuum-pumping system Download PDFInfo
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- CN103451378A CN103451378A CN2013104157106A CN201310415710A CN103451378A CN 103451378 A CN103451378 A CN 103451378A CN 2013104157106 A CN2013104157106 A CN 2013104157106A CN 201310415710 A CN201310415710 A CN 201310415710A CN 103451378 A CN103451378 A CN 103451378A
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Abstract
The invention discloses an automatic dust cleaning system for the vacuum pipeline of a molten steel refining dry type vacuum-pumping system. The automatic dust cleaning system comprises no less than 1 dust stratification cone bucket on the vacuum pipeline, electric dust cleaning valves arranged at the outlet of each dust stratification cone bucket, a filter and a vacuum-pumping system, wherein each electric dust cleaning valve is orderly connected with the filter and the vacuum-pumping system through a dust cleaning pipeline. The automatic dust cleaning system further comprises a vacuum pressure recovering device arranged on the vacuum pipeline and an automatic control system for controlling the electric dust cleaning valves, the filter and the vacuum-pumping system to work. The invention also discloses an automatic dust cleaning method for the vacuum pipeline of the molten steel refining dry type vacuum-pumping system; the dust cleaning method is capable of realizing dust cleaning by virtue of vacuum and pressure difference. The automatic dust cleaning system and method for the vacuum pipeline of the molten steel refining dry type vacuum-pumping system have the advantages that the dust of the vacuum pipeline is removed by generating negative pressure by using a mechanical vacuum pump, the energy consumption is reduced, maintenance is convenient, the dust cleaning effect is good and the environmental pollution is reduced.
Description
Technical field
The invention belongs to cleanser conduit system field, specifically relate to a kind of vacuum pipe automatic ash removing system and method for liquid steel refining dry-type vacuum pumping system.
Background technology
In field of metallurgy, molten steel is carried out in the process of the outer vacuum refinement of stove, the a large amount of dust that produce from molten steel can enter vacuum pipe along with process gas, easily, at position dust stratifications such as valve, longer straight length, pipeline low spots, vacuum pipe purge mode commonly used has pressurized gas purging, high pressure water washing, artificial deashing etc. at present.
The pressurized gas Purge methods is reserved joint and the ash-removing mouth of purging in interval on vacuum pipe normally, during deashing, pass into pressurized gas along medium flow to dust stratification is blowed to ash-removing mouth, the shortcoming and defect of this mode: a, larger at the ash-removing mouth airborne dust while purging, cause secondary pollution to environment; B, when the vacuum pipe caliber is larger, the pressurized gas flow velocity is slower, ash-removal effect is not good, as increase purged joint and compression gas flow, increases the consumption of medium, has improved operation expense.
High pressure water washing mode and pressurized gas Purge methods are similar, the reserved flush-through connection in interval and ash-removing mouth on vacuum pipe.But due in field of metallurgy, in factory, clean circulating water, turbid circulating water wirking pressure are 0.3-0.4MPa, pressure (more than 1.0MPa) that special boosting pump improves wash-down water need be set to meet the deashing requirement.When the shortcoming and defect of this mode: a, deashing, wash-down water and dust stratification form mud, collect difficulty, easily environment are caused to secondary pollution; Need after b, flushing pipeline is purged and drying, increased maintenance cost and maintenance time.
Artificial deashing is to enter vacuum pipe by the maintainer to carry out artificial deashing.The shortcoming and defect of this mode: a, work under bad environment, labor strength is large; B, owing to being in Working in confined space, and medium containing dust is generally toxic and harmful, the operating personnel easily causes the Occupational Disease Hazards such as suffocate, poisoning.C, in the small size vacuum system, due to the vacuum pipe caliber and operating space less, the maintainer enters difficulty, operation easier is large.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of vacuum pipe automatic ash removing system and method for liquid steel refining dry-type vacuum pumping system, the vacuum pipe automatic ash removing system and method for this liquid steel refining dry-type vacuum pumping system utilizes oil-sealed rotary pump to produce negative pressure to containing vacuum pipe, carrying out deashing, reduces energy consumption, easy to maintenance, ash-removal effect good, reduce contaminate environment.
In order to achieve the above object, the vacuum pipe automatic ash removing system of a kind of liquid steel refining dry-type vacuum pumping of the present invention system comprises electronic soot cleaning valve, strainer and the pumped vacuum systems that 1 dust stratification cone struggled against, was arranged on each dust stratification cone bucket outlet that be no less than be arranged on vacuum pipe, each described electronic soot cleaning valve all is connected with pumped vacuum systems with strainer successively by the deashing pipeline, also comprises the multiple pressure device of the vacuum that is arranged on vacuum pipe and for controlling the automatic control system of electronic soot cleaning valve, strainer and pumped vacuum systems work.
Further, described automatic control system comprise the PLC system, for the material-level detection system of measuring ash bucket ash amount in each dust stratification cone bucket and strainer, for the vacuum tightness detection system of measuring each point vacuum tightness in pumped vacuum systems with for measuring the differential pressure measuring system of pressure reduction before and after each electronic soot cleaning valve and strainer.
Further, described strainer is set to the dry method dust strainer, and described dry method dust strainer adopts the unitized construction of whirlwind and cloth bag, and described dry method dust filter bottom is provided with relief valve.
Further, described pumped vacuum systems comprises that separate unit oil-sealed rotary pump or many mechanical vacuum parallels connection of pumps add series combination pump group structure.
Further, described oil-sealed rotary pump is set to lobe pump or spiral pump.
Further, the multiple pressure device of described vacuum is set to for recovering nitrogen or other rare gas element charging devices of dust stratification cone bucket internal pressure.
The present invention has also disclosed a kind of vacuum pipe automatic ash removing method of liquid steel refining dry-type vacuum pumping system, and its step is as follows:
1), material level detects, and by automatic control system, measures the ash amount in dust stratification cone bucket, when dust stratification reaches high charge level, the startup pumped vacuum systems, close the technique valve on vacuum pipe;
2), vacuum, vacuum tightness in the filter system after electronic soot cleaning valve and deashing pipeline is transferred to 30Pa;
3), deashing process, open electronic soot cleaning valve, the front and back pressure reduction while utilizing electronic soot cleaning valve valve opening is brought dust stratification in dust stratification cone bucket into strainer by the deashing pipeline.
Further, in step 3), also comprise the repetition deashing process, close electronic soot cleaning valve, open the multiple pressure device of vacuum, nitrogen or other rare gas elementes are filled with to vacuum pipe, make the front pressure recovery of electronic soot cleaning valve to normal pressure, returning to step 2) vacuum, repeat to vacuumize and deashing process, until the dust stratification in dust stratification cone bucket has been removed.
Beneficial effect of the present invention is:
1, the vacuum pipe automatic ash removing system and method for liquid steel refining dry-type vacuum pumping system of the present invention is by adopting oil-sealed rotary pump to be vacuumized, front and back pressure reduction while utilizing electronic soot cleaning valve valve opening is brought dust stratification in dust stratification cone bucket into strainer by the deashing pipeline, carry out deashing, energy consumption is little, use cost is low, only consume a small amount of nitrogen or other rare gas elementes that a small amount of electric energy and vacuum are pressed use again, without compression gas or high pressure washing water consumption.
2, the vacuum pipe automatic ash removing system architecture of liquid steel refining dry-type vacuum pumping system of the present invention is single, and without configuration pressurized gas Preparation equipment or the high pressure water equipment that boosts, equipment cost is low.
3, the vacuum pipe automatic ash removing system operation of liquid steel refining dry-type vacuum pumping system of the present invention is easy to maintenance, and level of automation is high, workload is little.
4, the vacuum pipe automatic ash removing system of liquid steel refining dry-type vacuum pumping system of the present invention adopts the dry method dust strainer by employing, and ash-removal effect is good, environmentally safe.
The accompanying drawing explanation
The structural representation of the vacuum pipe automatic ash removing system that Fig. 1 is liquid steel refining dry-type vacuum pumping system of the present invention.
Reference numeral: 1-vacuum pipe; 2-technique valve; 3-dust stratification cone bucket; The electronic soot cleaning valve of 4-; 5-deashing pipeline; The 6-strainer; The 7-vacuum pump; The 8-material-level detection system; 9-vacuum tightness detection system; 10-differential pressure measuring system; The 11-PLC system; The 12-unloading valve; The multiple pressure device of 13-vacuum.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Be illustrated in figure 1 the structural representation of the vacuum pipe automatic ash removing system of liquid steel refining dry-type vacuum pumping system of the present invention, the vacuum pipe automatic ash removing system of a kind of liquid steel refining dry-type vacuum pumping of the present invention system comprises 1 the dust stratification cone bucket 3 that is no less than be arranged on vacuum pipe 1, be arranged on the electronic soot cleaning valve 4 of each dust stratification cone bucket 3 outlet, strainer 6 and pumped vacuum systems, each described electronic soot cleaning valve 4 all is connected with pumped vacuum systems with strainer 7 successively by deashing pipeline 5, also comprise the multiple pressure device 13 of the vacuum that is arranged on vacuum pipe 1 and for controlling electronic soot cleaning valve, the automatic control system of strainer and pumped vacuum systems work.
The present embodiment is by adopting oil-sealed rotary pump to be vacuumized, front and back pressure reduction while utilizing electronic soot cleaning valve valve opening is brought dust stratification in dust stratification cone bucket into strainer by the deashing pipeline, carry out deashing, strainer is filtered dust stratification simultaneously, avoid dust stratification to enter oil-sealed rotary pump and discharge atmosphere, minimizing damages oil-sealed rotary pump, reduces the pollution of environment.
Further, described automatic control system comprise PLC system 11, for the material-level detection system 8 of measuring the interior ash bucket ash of each dust stratification cone bucket 3 and strainer 6 amount, for the vacuum tightness detection system 9 of measuring each point vacuum tightness in pumped vacuum systems with for measuring the differential pressure measuring system 10 of each electronic soot cleaning valve 4 and strainer 6 front and back pressure reduction.
Further, described strainer 6 is set to the dry method dust strainer, described dry method dust strainer adopts the unitized construction of whirlwind and cloth bag, described dry method dust filter bottom is provided with relief valve 12, the present embodiment detects the interior ash bucket ash of strainer 6 amount by material-level detection system 8, when the interior ash bucket of strainer 6 ash amount reach a certain amount of after, carry out deashing by opening relief valve 12.
Further, described pumped vacuum systems comprises that separate unit oil-sealed rotary pump 7 or many oil-sealed rotary pump 7 parallel connections add series combination pump group structure.
Further, described oil-sealed rotary pump 7 is set to lobe pump or spiral pump.
Further, the multiple pressure device 13 of described vacuum is set to for recovering nitrogen or other rare gas element charging devices of dust stratification cone bucket internal pressure, the multiple pressure device 13 of the preferred vacuum of the present embodiment is set to the nitrogen charging device, this device, after deashing process and deashing complete, utilizes nitrogen that vacuum system is returned to normal pressure.
The present invention has also disclosed a kind of vacuum pipe automatic ash removing method of liquid steel refining dry-type vacuum pumping system, and its step is as follows:
1), material level detects, and by automatic control system, measures the ash amounts in dust stratification cone bucket 3, when dust stratification reaches high charge level, the startup pumped vacuum systems, close the technique valve 2 on vacuum pipe;
2), vacuum, strainer 6 systems after electronic soot cleaning valve 4 and the interior vacuum tightness of deashing pipeline 5 are transferred to 30Pa;
3), deashing process, open electronic soot cleaning valve 4, the front and back pressure reduction while utilizing electronic soot cleaning valve 4 valve opening is brought dust stratification cone bucket 3 interior dust stratifications into strainer 6 by deashing pipeline 5.
Further, in step 3), also comprise the repetition deashing process, close electronic soot cleaning valve, open the multiple pressure device of vacuum, nitrogen or other rare gas elementes are filled with to vacuum pipe, make the front pressure recovery of electronic soot cleaning valve to normal pressure, returning to step 2) vacuum, repeat to vacuumize and deashing process, until the dust stratification in dust stratification cone bucket has been removed.
Finally explanation is, above preferred embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from the claims in the present invention book limited range.
Claims (8)
1. the vacuum pipe automatic ash removing system of a liquid steel refining dry-type vacuum pumping system, it is characterized in that: comprise electronic soot cleaning valve, strainer and the pumped vacuum systems that 1 dust stratification cone struggled against, was arranged on each dust stratification cone bucket outlet that be no less than be arranged on vacuum pipe, each described electronic soot cleaning valve all is connected with pumped vacuum systems with strainer successively by the deashing pipeline, also comprises the multiple pressure device of the vacuum that is arranged on vacuum pipe and for controlling the automatic control system of electronic soot cleaning valve, strainer and pumped vacuum systems work.
2. the vacuum pipe automatic ash removing system of liquid steel refining dry-type vacuum pumping system as claimed in claim 1 is characterized in that: described automatic control system comprises the PLC system, for the material-level detection system of measuring ash bucket ash amount in each dust stratification cone bucket and strainer, for the vacuum tightness detection system of measuring each point vacuum tightness in pumped vacuum systems with for measuring the differential pressure measuring system of pressure reduction before and after each electronic soot cleaning valve and strainer.
3. the vacuum pipe automatic ash removing system of liquid steel refining dry-type vacuum pumping system as claimed in claim 1 or 2, it is characterized in that: described strainer is set to the dry method dust strainer, described dry method dust strainer adopts the unitized construction of whirlwind and cloth bag, and described dry method dust filter bottom is provided with relief valve.
4. the vacuum pipe automatic ash removing system of liquid steel refining dry-type vacuum pumping system as claimed in claim 1 or 2, it is characterized in that: described pumped vacuum systems comprises that separate unit oil-sealed rotary pump or many mechanical vacuum parallels connection of pumps add series combination pump group structure.
5. the vacuum pipe automatic ash removing system of liquid steel refining dry-type vacuum pumping system as claimed in claim 4, it is characterized in that: described oil-sealed rotary pump is set to lobe pump or spiral pump.
6. the vacuum pipe automatic ash removing system of liquid steel refining dry-type vacuum pumping system as claimed in claim 1 is characterized in that: the multiple pressure device of described vacuum is set to for recovering nitrogen or other rare gas element charging devices of dust stratification cone bucket internal pressure.
7. the ash removal method of the vacuum pipe automatic ash removing system of use liquid steel refining dry-type vacuum pumping as described as claim 1～6 an any one system, it is characterized in that: its step is as follows:
1), material level detects, and by automatic control system, measures the ash amount in dust stratification cone bucket, when dust stratification reaches high charge level, the startup pumped vacuum systems, close the technique valve on vacuum pipe;
2), vacuum, vacuum tightness in the filter system after electronic soot cleaning valve and deashing pipeline is transferred to 30Pa;
3), deashing process, open electronic soot cleaning valve, the front and back pressure reduction while utilizing electronic soot cleaning valve valve opening is brought dust stratification in dust stratification cone bucket into strainer by the deashing pipeline.
8. the vacuum pipe automatic ash removing method of a kind of liquid steel refining dry-type vacuum pumping system as claimed in claim 7, it is characterized in that: in step 3), also comprise the repetition deashing process, close electronic soot cleaning valve, open the multiple pressure device of vacuum, nitrogen or other rare gas elementes are filled with to vacuum pipe, make the front pressure recovery of electronic soot cleaning valve to normal pressure, returning to step 2) vacuum, repeat to vacuumize and deashing process, until the dust stratification in dust stratification cone bucket has been removed.
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| CN201310415710.6A CN103451378B (en) | 2013-09-12 | 2013-09-12 | The vacuum pipe automatic ash removing system and method for liquid steel refining dry-type vacuum pumping system |
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| CN201310415710.6A CN103451378B (en) | 2013-09-12 | 2013-09-12 | The vacuum pipe automatic ash removing system and method for liquid steel refining dry-type vacuum pumping system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106694457A (en) * | 2016-12-08 | 2017-05-24 | 宁波科尼管洁净科技有限公司 | Pipe cleaning device and method |
| CN111720161A (en) * | 2020-07-02 | 2020-09-29 | 杨东方 | Coal mine coal face upper corner gas extraction device |
| CN111842362A (en) * | 2020-07-24 | 2020-10-30 | 北京宜世通信息技术有限公司 | Railway passenger station self-purging type vacuum sewage discharge pipeline cleaning system and method |
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| CN202283536U (en) * | 2011-01-28 | 2012-06-27 | 北京凡元兴科技有限公司 | Boiler detection guide pipe ash cleaning device |
| CN202968583U (en) * | 2012-12-15 | 2013-06-05 | 武钢集团昆明钢铁股份有限公司 | Dust removal device for automatically controlling ash transportation |
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| CN201842861U (en) * | 2010-10-28 | 2011-05-25 | 重庆钢铁(集团)有限责任公司 | Cleaning device for RH dry-process vacuum pumping system |
| CN202283536U (en) * | 2011-01-28 | 2012-06-27 | 北京凡元兴科技有限公司 | Boiler detection guide pipe ash cleaning device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104946856B (en) * | 2015-07-20 | 2017-01-04 | 中国重型机械研究院股份公司 | A kind of layout pattern of multi-level water steam jet pump |
| CN106694457A (en) * | 2016-12-08 | 2017-05-24 | 宁波科尼管洁净科技有限公司 | Pipe cleaning device and method |
| CN106694457B (en) * | 2016-12-08 | 2019-10-11 | 宁波科尼管洁净科技有限公司 | Can washing apparatus and its cleaning method |
| CN111720161A (en) * | 2020-07-02 | 2020-09-29 | 杨东方 | Coal mine coal face upper corner gas extraction device |
| CN111720161B (en) * | 2020-07-02 | 2021-12-07 | 杨东方 | Coal mine coal face upper corner gas extraction device |
| CN111842362A (en) * | 2020-07-24 | 2020-10-30 | 北京宜世通信息技术有限公司 | Railway passenger station self-purging type vacuum sewage discharge pipeline cleaning system and method |
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| CN103451378B (en) | 2015-09-16 |
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Address after: Three village 400080 Dadukou District of Chongqing weir building 1 No. 1 Patentee after: Company limited of Design Inst., Chongqing Iron & Steel Group Address before: Three village 400080 Dadukou District of Chongqing weir building 1 No. 1 Patentee before: Chongqing Iron & Steel Group Design Institute |