CN203098417U - Steelmaking steam-jet pump vacuum system with adjustable modes - Google Patents
Steelmaking steam-jet pump vacuum system with adjustable modes Download PDFInfo
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- CN203098417U CN203098417U CN 201220730766 CN201220730766U CN203098417U CN 203098417 U CN203098417 U CN 203098417U CN 201220730766 CN201220730766 CN 201220730766 CN 201220730766 U CN201220730766 U CN 201220730766U CN 203098417 U CN203098417 U CN 203098417U
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Abstract
Provided is a steelmaking steam-jet pump vacuum system with adjustable modes. The steelmaking steam-jet pump vacuum system with the adjustable modes comprises a first steam-jet pump, a second steam-jet pump, a third steam-jet pump, a fourth steam-jet pump, a fifth steam-jet pump, a sixth steam-jet pump, a seventh steam-jet pump, a first condenser, a second condenser, a third condenser, a first pneumatic control valve, a second pneumatic control valve, a third pneumatic control valve and a fourth pneumatic control valve. The steelmaking steam-jet pump vacuum system with the adjustable modes is characterized in that the third pneumatic control valve is in serial connection in front of the fifth steam-jet pump, the fourth pneumatic control valve is in serial connection in front of the seventh steam-jet pump, and namely, the combined mode that two pneumatic control valves are additionally arranged in an original vacuum system, and the pneumatic control valves are used for controlling the fourth steam-jet pump, the fifth steam-jet pump, the sixth steam-jet pump and the seventh steam-jet pump is adopted. By means of the vacuum system, modes of vacuum pumps can be changed, when the sixth steam-jet pump has wear-out failure, vacuum pumping modes can be adjusted automatically, therefore demanded vacuum degrees can still be achieved, and production can not be influenced; and meanwhile, leakage rates of the vacuum system can be tested, and beneficial help can be supplied to high-quality steel vacuum melting in the process of steelmaking. The steelmaking steam-jet pump vacuum system with the adjustable modes especially aims at large-scale steelmaking vacuum systems.
Description
Technical field
The present invention relates to a kind of steel-making vapor pump vacuum system of adjustable mode.Feature is the vacuum system that can be applicable to the steel-making ladle refining furnace vacuum outgas of iron and steel metallurgy enterprise, and this vacuum system can be regulated the vacuum suction pattern according to the equipment situation, guarantees the degree of vacuum of vacuum system.
Background technique
At present domestic and international steel works ladle refining furnace vapor pump vacuum system, Vacuum System Design be four or the Pyatyi Steam Ejector System form, the Pyatyi vapor pump is connected into by S1, S2, S3, S4a, S4b, S5a, S5b, the few S1 in level Four vapor pump front, all the other vapor pumps are formed the same.The opening and closing of M1 and M2 pneumatic control valve may command S4b and S5b vacuum pump.Vacuum system has two intercondenser C1 and C2, a last condenser stage C3.The effect of condenser be vapor condensation Cheng Shui that the prime jet pump is discharged to improve the efficient of back level jet pump, the cooling water in the condenser enters hot well.Vaccum treating apparatus is under the effect that vacuum system continues to bleed, Laval nozzle by vacuum pump is brought up to supersonic speed with the jet velocity of working steam, utilize produced simultaneously pressure reduction, make it to mix and form mixed gas with the high-temp waste gas of inhaling the population place, enter vacuum pipe through deceleration supercharging after the Diffuser throat again, enter the condenser cooling after being with mixed gas to wash away, be discharged to vacuum system pipeline outer (as shown in Figure 1) at last.
In whole vacuum system steelmaking process, may produce external leakage and internal leakage, external leakage is because the vacuum system blow-by causes, internal leakage is that a certain equipment malfunction generation waste gas can't be discharged in the vacuum system.The normal air suction mode automatically of general vacuum system, the S5a+S5b vacuum pump is opened in first forvacuum before handling molten steel, when degree of vacuum arrives the value of setting, open the S4a+S4b vacuum pump, bleed and reach when setting degree of vacuum, M1 and M2 control valve are closed and are closed S4b+S5b simultaneously automatically, and the steel grade that last full pump is handled need be opened pump S1+S2+S3+S4a+S5a, and the light steel grade of handling only need be opened pump S3+S5a+S5b.When steel-making, open S4a+S5a, S5a opens always in handling afterwards, service time is the longest in the S5a steel-making, so long unlatching causes the wearing and tearing of vapor pump, and S5a and S4a lost efficacy easily, loses exhaust capacity after the inefficacy, there is not control open and close valve before S5a and the S4a, directly communicate with C3 condenser and atmosphere, cause the vacuum internal leakage after the inefficacy, equipment vacuum smelting normally molten steel.The vacuum smelting process need satisfy the shortest vacuum processing time requirement and technology rhythm in the STEELMAKING PRODUCTION, makes abundant vacuum outgas of molten steel and purified treatment, greatly improves the degree of purity of molten steel, thereby produces high-quality product.Quality and degree of vacuum that molten steel is smelted have substantial connection, and degree of vacuum is good, the molten steel high purity.Therefore vacuum system can not produce external leakage and internal leakage, otherwise can't satisfy the vacuum smelting technological requirement.
Under this background, the research vacuum system is the normal important ring of vacuum equipment operation, how to guarantee the reliability of vacuum system, becomes a key technology.
The vacuum equipment administrative staff are in plant maintenance at ordinary times, vapor pump is in airtight space in the vacuum system, therefore can't check jet pump, can not understand its abrasion condition, have only the vacuum system exhaust capacity of working as not reach requirement, stop to produce, open vacuum system and check the jet pump use condition, vacuum equipment just can not normally move like this, influences rhythm of production.Finding needs pump is changed after the pump wearing and tearing, and pump uses steam, the vacuum system temperature height, and constructional difficulties, it is longer to change the pump time, needs to guarantee sealing, no external leakage after the replacing.Because valveless can be closed before the vacuum system C3 condenser, links to each other with atmosphere and can't test the leak-down rate of vacuum system.
Through domestic and international patent retrieval, retrieve relevant patent.Vapor pump pumped vacuum systems device, (ZL patent No. CN03205881.0), a kind of vacuum pumping device that is applied to be used on the tobacco cutting production line tobacco leaf conditioning equipment, adopt on the basis of three vapor pump pumped vacuum systems, be the time of accelerating to vacuumize, adopt two-stage primer pump technology in the configuration.A kind of vacuum system, (ZL patent No. CN201020568959.2), two house steward's arrangements that this vacuum system adopts first house steward and second house steward can pass through valve regulated.
The model utility content
According to above-mentioned present situation, the purpose of this utility model is, a kind of steel-making vapor pump vacuum system of adjustable mode is provided, utilize this vacuum system can switch the vacuum pump pattern, behind vapor pump S5a wear out failure, automatically regulate the vacuum suction pattern, still can meet the requirements of degree of vacuum, and not influence production.Can test simultaneously the leak-down rate of vacuum system.For steel-making vacuum smelting high quality elaboration steel provides useful help.The steel-making vapor pump vacuum system of a kind of adjustable mode of the present invention is specially at large-scale steel-making vacuum system.
The technical solution of the utility model is as follows:
A kind of steel-making vapor pump vacuum system of adjustable mode, comprise vapor pump one S1, vapor pump two S2, vapor pump Three S's 3, vapor pump five S4a, vapor pump six S4b, vapor pump seven S5a, vapor pump eight S5b, condenser one C1, condenser two C2, condenser three C3, pneumatic control valve one M1, pneumatic control valve two M2
Described vapor pump one S1, vapor pump two S2, vapor pump Three S's 3 is connected with condenser one C1, vapor pump four S4a, vapor pump five S4b are connected in parallel between condenser one C1 and condenser two C2, vapor pump six S5a, vapor pump seven S5b are connected in parallel between condenser one C2 and condenser three C3, before described pneumatic control valve one M1 control valve is connected on vapor pump four S4a, before pneumatic control valve two M2 control valves are connected on vapor pump six S5a, it is characterized in that
Series connection is provided with pneumatic control valve three M3 before vapor pump five S4b, and series connection is provided with pneumatic control valve four M4 control valves before vapor pump seven S5b.
Steel-making vapor pump vacuum system according to a kind of adjustable mode of the present utility model, it is characterized in that, after degree of vacuum detection table one Q1 is installed in vapor pump five S4b, after detection table two Q2 is installed in vapor pump seven S5b, detection table three Q3 be installed in vapor pump four S4a after, after detection table four Q4 is installed in vapor pump six S5a.
Promptly, in former vacuum system, increase by two pneumatic control valves, control the integrated mode of vapor pump four S4a, vapor pump five S4b, vapor pump six S5a, vapor pump seven S5b by valve, vapor pump four S4a+ vapor pumps, six S5a and vapor pump five S4b+ vapor pumps seven S5b, need to use a group mode, open or close corresponding pneumatic control valve, adjustable pattern can not cause the vacuum internal leakage.Open one and be equipped with one, prolong equipment service time, improve the vacuum system reliability.
In view of the above, pneumatic control valve one M1, pneumatic control valve two M2, pneumatic control valve three M3, pneumatic control valve four M4 control valves are controlled chain automatically according to two kinds of adjustable vacuum modes, also can use monomer to debug each control valve in debug process by equipment.After pneumatic control valve three M3 and pneumatic control valve four M4 pneumatic valves are installed, in off position down, cut off condenser three C3 and link to each other with atmosphere, can test the vacuum system leak-down rate like this.
After degree of vacuum detection table one Q1 is installed in vapor pump S4b pump, after detection table two Q2 is installed in vapor pump five S5b pumps, detection table three Q3 be installed in vapor pump four S4a after, after detection table four Q4 is installed in vapor pump six S5a.4 degree of vacuum detection tables detect vapor pump four S4a, vapor pump five S4b, vapor pump six S5a, each vacuum pump degree of vacuum of vapor pump seven S5b, can judge the operation conditions of each vacuum pump after detecting automatically.By detected degree of vacuum, use pneumatic control valve one M1, pneumatic control valve two M2, pneumatic control valve three M3, pneumatic control valve four M4 control valves to regulate two kinds of vacuum modes, control valve and degree of vacuum detection table are controlled chain automatically, also can use monomer to debug each control valve in debug process by equipment.After pneumatic control valve three M3 and pneumatic control valve four M4 pneumatic valves are installed, in off position down, cut off condenser three C3 and link to each other with atmosphere, can test the vacuum system leak-down rate like this.
Electrical control of the present utility model is as follows, 4 degree of vacuum detection tables detect vapor pump four S4a, vapor pump five S4b, vapor pump six S5a, vapor pump seven S5b degree of vacuum, degree of vacuum detects table three Q3, degree of vacuum detects table four Q4 in the standard vacuum degree, close condenser one M1, condenser two M2 control valves, open condenser three M3, condenser four M4 control valves, form vapor pump one S1+ vapor pump two S2+ vapor pump Three S's 3+ vapor pumps four S4a+ vapor pumps six S5a patterns.Degree of vacuum detection table three Q3, vacuum-degree monitoring table four Q4 have unusually, and vapor pump four S4a, vapor pump six S5a wear out failures are described.Automatically switch, open condenser one M1, condenser two M2 control valves, close condenser three M3, condenser four M4 control valves, form vapor pump one S1+ vapor pump two S2+ vapor pump Three S's 3+ vapor pumps five S4b+ vapor pumps seven S5b patterns.Degree of vacuum detects table one Q1, degree of vacuum detects table two Q2 monitoring vapor pump five S4b, vapor pump seven S5b behaviours in service, unusual changeable another group mode of degree of vacuum appears, open or close corresponding pneumatic control valve, adjustable pattern can not cause the vacuum internal leakage.Prolongation equipment service time, improve the vacuum system reliability.
Description of drawings
Fig. 1 is ladle refining furnace vapor pump vacuum system schematic representation in the past.
Fig. 2 is the steel-making vapor pump vacuum system schematic representation of adjustable mode of the present utility model.
Fig. 3 is a use flow chart of the present utility model.
Wherein S1 is a vapor pump one, S2 is a vapor pump two, S3 is a vapor pump three, S4a is a vapor pump four, and S4b is a vapor pump five, and S5a is a vapor pump six, S5b is a vapor pump seven, C1 is a condenser one, and C2 is a condenser two, and C3 is a condenser three, M1 is a pneumatic control valve one, M2 is a pneumatic control valve two, and M3 is a pneumatic control valve three, and M4 is a pneumatic control valve four, Q1 is a degree of vacuum detection table one, Q2 is a degree of vacuum detection table two, and Q3 is a degree of vacuum detection table three, and Q4 is a degree of vacuum detection table four.
Embodiment
Embodiment 1
A kind of steel-making vapor pump vacuum system of adjustable mode, comprise vapor pump one S1, vapor pump two S2, vapor pump Three S's 3, vapor pump four S4a, vapor pump five S4b, vapor pump six S5a, vapor pump seven S5b, condenser one C1, condenser two C2, condenser three C3, pneumatic control valve one M1, control valve two M2, described vapor pump one S1, vapor pump two S2, vapor pump Three S's 3 is connected with condenser condenses device one C1, vapor pump four S4a, vapor pump five S4b are connected in parallel between condenser one C1 and condenser two C2, vapor pump six S5a, vapor pump seven S5b are connected in parallel between condenser two C2 and condenser three C3, before described control valve one M1 is connected on vapor pump four S4a, before control valve two M2 are connected on vapor pump six S5a, series connection is provided with control valve three M3 before vapor pump five S4b, and series connection is provided with control valve four M4 before vapor pump seven S5b.
Promptly, in former vacuum system, increase by two pneumatic control valves, come the integrated mode of control pump vapor pump four S4a, vapor pump five S4b, vapor pump six S5a, vapor pump seven S5b by valve, vapor pump four S4a+ vapor pumps, six S5a and vapor pump five S4b+ vapor pumps seven S5b, need to use a group mode, open or close corresponding pneumatic control valve, adjustable pattern can not cause the vacuum internal leakage.Open one and be equipped with one, prolong equipment service time, improve the vacuum system reliability.The steel-making operator are when steel-making, there are two kinds of patterns optional, vapor pump one S1+ vapor pump, two S2+ vapor pump Three S's 3+ vapor pump four S4a+ vapor pumps, six S5a and vapor pump one S1+ vapor pump two S2+ vapor pump Three S's 3+ vapor pumps five S4b+ vapor pumps seven S5b.During normal preference pattern vapor pump one S1+ vapor pump two S2+ vapor pump Three S's 3+ vapor pumps four S4a+ vapor pumps six S5a, closed control valve one M1 and control valve two M2, open control valve three M3 and control valve four M4, can guarantee that vacuum system do not have leakage, guarantee normal production.In smelting, note abnormalities, when losing efficacy appears in vapor pump four S4a and one of them pump of vapor pump six S5a or two, the can regulate pattern of bleeding, select vapor pump one S1+ vapor pump two S2+ vapor pump Three S's 3+ vapor pumps five S4b+ vapor pumps seven S5b patterns, automatic closed control valve three M3 and control valve four M4 control valves, cut-out links to each other with atmosphere with condenser three C3, open control valve one M1 and control valve two M2 control valves, vapor pump five S4b+ vapor pumps seven S5b are linked to each other with condenser one C1, and vacuum system degree of vacuum is normal.When overhauling Deng free arrangement, the vapor pump of replaceable inefficacy can not influence normal production after the inefficacy.
The steel-making attendant is when the debugging vacuum system, normal pattern carries out vacuum system is bled, when the arrival certain vacuum is spent, can pass through closed control valve two M2 and control valve four M4, open control valve one M1 and control valve three M3, vacuum system pipeline and atmosphere separate, and form a vacuum sealing space, conveniently measure the leak-down rate of vacuum system according to the variation of time and degree of vacuum.
Claims (2)
1. the steel-making vapor pump vacuum system of an adjustable mode, comprise vapor pump one (S1), vapor pump two (S2), vapor pump three (S3), vapor pump five (S4a), vapor pump six (S4b), vapor pump seven (S5a), vapor pump eight (S5b), condenser one (C1), condenser two (C2), condenser three (C3), pneumatic control valve one (M1), pneumatic control valve two (M2), described vapor pump one (S1), vapor pump two (S2), vapor pump three (S3) is connected with condenser one (C1), vapor pump four (S4a), vapor pump five (S4b) is connected in parallel between condenser one (C1) and the condenser two (C2), vapor pump six (S5a), vapor pump seven (S5b) is connected in parallel between condenser one (C2) and the condenser three (C3), it is preceding that described pneumatic control valve one (M1) control valve is connected on vapor pump four (S4a), it is preceding that pneumatic control valve two (M2) control valve is connected on vapor pump six (S5a), it is characterized in that
In the preceding series connection of vapor pump five (S4b) pneumatic control valve three (M3) is set, pneumatic control valve four (M4) control valve is set in the preceding series connection of vapor pump seven (S5b).
2. the steel-making vapor pump vacuum system of a kind of adjustable mode according to claim 1, it is characterized in that, after degree of vacuum detects table one (Q1) and is installed in vapor pump five (S4b), after degree of vacuum detects table two (Q2) and is installed in vapor pump seven (S5b) back, degree of vacuum and detects table three (Q3) and be installed in vapor pump four (S4a) back, degree of vacuum and detect table four (Q4) and be installed in vapor pump six (S5a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730766 CN203098417U (en) | 2012-12-26 | 2012-12-26 | Steelmaking steam-jet pump vacuum system with adjustable modes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730766 CN203098417U (en) | 2012-12-26 | 2012-12-26 | Steelmaking steam-jet pump vacuum system with adjustable modes |
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| CN203098417U true CN203098417U (en) | 2013-07-31 |
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| CN 201220730766 Expired - Fee Related CN203098417U (en) | 2012-12-26 | 2012-12-26 | Steelmaking steam-jet pump vacuum system with adjustable modes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882186A (en) * | 2014-03-13 | 2014-06-25 | 南京钢铁股份有限公司 | Vacuum-pumping device of RH (Ruhrstahl Hereaeus) refining furnace and use 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 |
| CN107246375A (en) * | 2017-07-18 | 2017-10-13 | 中国重型机械研究院股份公司 | A kind of vacuum pump system of new structure |
-
2012
- 2012-12-26 CN CN 201220730766 patent/CN203098417U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882186A (en) * | 2014-03-13 | 2014-06-25 | 南京钢铁股份有限公司 | Vacuum-pumping device of RH (Ruhrstahl Hereaeus) refining furnace and use method thereof |
| CN103882186B (en) * | 2014-03-13 | 2015-09-30 | 南京钢铁股份有限公司 | A kind of RH refining furnace vacuum extractor 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 |
| CN107246375A (en) * | 2017-07-18 | 2017-10-13 | 中国重型机械研究院股份公司 | A kind of vacuum pump system of new structure |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20151226 |
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| EXPY | Termination of patent right or utility model |