CN100590317C - Single stage turbine vacuum pumping machine and method for pumping vacuum by the machine - Google Patents
Single stage turbine vacuum pumping machine and method for pumping vacuum by the machine Download PDFInfo
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- CN100590317C CN100590317C CN200810219409A CN200810219409A CN100590317C CN 100590317 C CN100590317 C CN 100590317C CN 200810219409 A CN200810219409 A CN 200810219409A CN 200810219409 A CN200810219409 A CN 200810219409A CN 100590317 C CN100590317 C CN 100590317C
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Abstract
The invention discloses a single-stage turbine vacuum machine and a method for extracting vacuum by using the same. The pump body of the turbine vacuum machine is mounted on one side of a turbine acceleration gear box, an inlet casing is inlaid in a spiral case, the inner wall is formed with a suction inlet and an impeller static ring, the suction inlet adopts conical structure, the inlet casing at the rear end of the suction inlet adopts arc shape at the position matching with the impeller to form the impeller static ring, at the impeller outlet, a diffuser is formed by the annular chamber between the inlet casing at the rear part of the impeller static ring and the spiral case, and a diffusion flow guide impeller is mounted in the diffuser. The method for extracting vacuum is that the impeller is driven by the turbine acceleration gear box, the gas is sucked through the suction inlet and is exhausted through the spiral case outlet through the impeller and the diffusion flow guide impeller; and a vacuum degree of -20 KPa to -60 KPa is formed at the suction inlet to realize the extraction of the vacuum. The method for extracting vacuum has high efficiency which can reach more than80%, and can reduce the energy consumption by 50% compared with the conventional vacuum system.
Description
Technical field
The present invention relates to turbomachinery technology and vacuum equipment field, particularly relate to a kind of single stage turbine vacuum machine and use its method for extracting vacuum.
Background technique
Needing the vacuum system of big rate of air sucked in required to be widely used in departments such as oil, chemical industry, mine, machinery, light industry, food, medicine, electronics, metallurgy, space flight, at present, use wider vacuum system, mainly is Nash hytor and Roots pump.
Nash hytor belongs to the variable capacity vacuum pump, when work, in the pump housing, need a certain amount of water as working solution, vacuum pump impeller drives the variation that the water rotation produces pump chamber, realize air-breathing, compression and exhaust work process, because the existence of working solution, the rotating speed of pump is low, and working efficiency is also low, generally about 40%.Nash hytor is subjected on the structure and the restriction of working solution saturation vapor pressure, because water saturation vapor tension height makes that the suction pressure of water ring vaccum pump is also high, the degree of vacuum of generation also can reduce.
Roots pump is a kind of rotary positive-displacement vacuum pump, and it is developed by Roots blower.Roots pump has the higher speed of exhaust when lower inlet pressure, it is little to have driving power, compact structure, characteristics such as the little and during-operation service expense of floor space is low, but Roots pump is a kind of vacuum pump that does not have interior compression, usually compression ratio is very low, so be applied in height, in during vacuum system, must with the supporting use of preevacuation pump, have only when the inlet pressure in the extract system is drawn into the inlet pressure of Roots pump permission by preevacuation pump, Roots pump just can be started working, and in the ordinary course of things, Roots pump does not allow High Pressure Difference work, otherwise will transship and overheated and damage.
Using in Nash hytor and the Roots pump system at present, the ineffective shortcoming of ubiquity, in the vacuum occasion of the big rate of air sucked in required of needs, the vacuum pump quantity of required configuration is many, volume is big, energy consumption is high, noise is big especially.
Summary of the invention
In order to overcome shortcomings such as existing big rate of air sucked in required vacuum system energy consumption is big, the water consumption is big, the invention provides a kind of single stage turbine vacuum machine.
Another object of the present invention provides uses described single stage turbine vacuum machine method for extracting vacuum.
Purpose of the present invention is achieved through the following technical solutions:
A kind of single stage turbine vacuum machine comprises turbine acceleration gear box, the pump housing and impeller assembly; Gearwheel and pinion in the described turbine acceleration gear box, the axle on the gearwheel connects with prime mover, and the output terminal of pinion shaft connects with impeller; The described pump housing is installed in a side of turbine acceleration gear box, comprises suction casing, spiral case, diffusion guide vane and blade angle controlling mechanism; Described suction casing is embedded in the spiral case, its inwall forms suction port and impeller stationary ring, suction port adopts conical structure, the suction casing that is positioned at the suction port rear end is adopting circular arc with the impeller cooperation position, form the impeller stationary ring, impeller and impeller stationary ring adopt Spielpassung, the inner wall shape of spiral case adopts circular section, its diameter increases gradually along the air-flow sense of rotation, at the impeller outlet place, the suction casing at impeller stationary ring rear portion and the annular housing between the spiral case form Diffuser, and the diffusion guide vane is installed in the Diffuser; The blade angle controlling mechanism is installed in the back of diffusion guide vane, comprise blade contiguous block, piece fixing pin, annulus, bar fixing pin, connecting rod, hanger, air bladder final controlling element, each diffusion guide vane is connected with annulus with the piece fixing pin by a blade contiguous block corresponding with it, and the air bladder final controlling element is connected with annulus by hanger, connecting rod and the bar fixing pin that links to each other successively; Described impeller assembly comprises impeller, pinion shaft, and impeller is installed in the end of the pinion shaft of turbine acceleration gear box, is positioned at the cavity of suction port.
Further, described impeller is the centrifugal three-dimensional flow structure of semi-open type, and impeller diameter is preferably 400mm to 800mm.
Described diffusion guide vane number is preferably 24 to 30, and circumference evenly distributes.
Described diffusion guide vane adjustable angle, angle of regulation range 8 degree are to 30 degree.
The diclinic gear that the gearwheel of described turbine acceleration gear box and small gear revolve about adopting.
The described pump housing also comprises gas axle envelope, and gas axle envelope is installed between spiral case and the pinion shaft.
Described single stage turbine vacuum machine also comprises the fuel feeding assembly, the fuel feeding assembly is installed on the turbine acceleration gear box, comprise oil pump driving gear pair, mechanical lubrication oil pump, a gear of oil pump driving gear pair is installed on the axle of mechanical lubrication oil pump, the another one gear is installed on the axle of gearwheel, the axle of gearwheel drives the secondary running of oil pump driving gear, drives the machine oil pump operation.
Use single stage turbine vacuum machine method for extracting vacuum: impeller drives by turbine acceleration gear box, and the rotating speed rotation with 4000r/min to 12000r/min makes gas suck from suction port, through impeller, diffusion guide vane, discharges from the spiral case exhaust port; The flow that sucks gas is 500m
3/ min to 1500m
3/ min in the degree of vacuum of the formation-20KPa of suction port place to-60KPa, realizes the extraction of vacuum.
Further, the gas temperature of discharging from the exhaust port of spiral case is 100 ℃ to 180 ℃, realizes energy recovery by heat exchanger.
With respect to prior art, the present invention has following advantage and beneficial effect:
The present invention utilizes the big flow of the high speed rotating realization gas of single stage turbine machine impeller to aspirate and produces vacuum, can form-20KPa is to-60KPa degree of vacuum, the efficient height, generally can reach more than 80%, with the vacuum system of routine relatively, capable of reducing energy consumption 50%, and diffusion guide vane angle can be adjusted automatically according to the vacuum state of system, power consumption also changes along with the variation of system vacuum, and the vacuum turbine engine is worked under maximal efficiency; Because gas is compressed in the turbine vacuum machine, delivery temperature reaches 100-180 ℃, can realize energy recovery by heat exchanger; The turbine vacuum machine need not seal water when work, can save a large amount of waters; Because turbine vacuum machine compact structure, the vacuum ability is big, and with the vacuum system comparison of routine, the vacuum machine quantity that needs reduces, and reduction equipment takes up room; The turbine vacuum machine is lubricated by the mechanical lubrication oil pump, for the turbine vacuum machine provides maximum handling safety.
Description of drawings
Fig. 1 is the structural representation of single stage turbine vacuum machine of the present invention.
Fig. 2 is the A place partial enlarged drawing of Fig. 1.
Fig. 3 is the B-B sectional drawing of Fig. 1.
Shown in the figure, 1. suction port 2. impellers 3. impeller stationary rings 4. suction casings 5. spiral cases 6. exhaust ports 7. diffusion guide vanes 8. gas axles seal 17. fixing pins of secondary 13. mechanical lubrication oil pumps, 14. prime mover 15. gearwheels, the 16. blade contiguous blocks of 9. turbine acceleration gear box, 10. pinion shafts, 11. small gears, 12. oil pump driving gears, 18. annulus, 19. bar fixing pins, 20. connecting rods, 21. hangers, 22. air bladder final controlling element
Embodiment
For further understanding the present invention, below in conjunction with accompanying drawing the present invention is further described, need to prove that embodiment is not construed as limiting the scope of protection of present invention.
Embodiment 1:
As shown in Figure 1, single stage turbine vacuum machine comprises turbine acceleration gear box 9, the pump housing, impeller assembly, fuel feeding assembly; Be provided with intermeshing gearwheel 15 and small gear 11 in the turbine acceleration gear box 9, the axle on the gearwheel 15 connects with prime mover 14, and the output terminal of pinion shaft 10 connects with impeller 2, by gearwheel 15 driving pinions 11, realizes speedup.The diclinic gear structure that revolves about the gearwheel 15 of turbine acceleration gear box and small gear 11 preferred employings utilizes the characteristics of diclinic gear can offset the end thrust that impeller 2 produces.The pump housing is installed in a side of turbine acceleration gear box 9, comprises suction casing 4, spiral case 5, diffusion guide vane 7, the gentle axle envelope 8 of blade angle controlling mechanism; Suction casing 4 is embedded in the spiral case 5, its inwall adopts one to be processed to form suction port 1 and impeller stationary ring 3, suction port 1 is a conical structure, in the suction port 1 near the suction casing 4 of turbine acceleration gear box 9 sides with impeller 2 cooperation positions be circular arc, form impeller stationary ring 3, such taper shape is in conjunction with the air intake structure of circular arc, formed intake swirl district minimum; Impeller 2 adopts Spielpassung with impeller stationary ring 3; The inner wall shape of spiral case 5 adopts circular section, and its diameter increases gradually along the air-flow sense of rotation; In the outlet port of impeller 2, impeller stationary ring 3 rear portions of suction casing 4 and the annular housing between the spiral case 5 form Diffuser, and diffusion guide vane 7 is installed in the Diffuser.Fig. 2 shows the blade angle controlling mechanism, and Fig. 3 shows blade angle controlling mechanism and diffusion guide vane distribution situation.The blade angle controlling mechanism is installed in the back of diffusion guide vane 7, as shown in Figures 2 and 3, comprises blade contiguous block 16, piece fixing pin 17, annulus 18, bar fixing pin 19, connecting rod 20, hanger 21, air bladder final controlling element 22; Each diffusion guide vane 7 is connected with annulus 18 with piece fixing pin 17 by a blade contiguous block 16 corresponding with it, the hanger 21 of air bladder final controlling element 22 by linking to each other successively, connecting rod 20 is connected with annulus 18 with bar fixing pin 19, air bladder final controlling element 22 moves up and down, drive annulus 18 and do circular motion, thereby drive 7 motions of diffusion guide vane, realize the angle adjustment of diffusion guide vane 7, diffusion guide vane 7 numbers are preferably 24 to 30, evenly distribute along circumference, angle of regulation range 8 degree are to 30 degree, by changing the angle of diffusion guide vane 7, with regard to the rate of air sucked in required of can regulate turbine vacuum machine, thus can regulate degree of vacuum.Gas axle envelope 8 is installed between spiral case 5 and the pinion shaft 10.Impeller assembly comprises impeller 2, pinion shaft 10, and impeller 2 is installed in the end that turbine quickens the pinion shaft 10 of tooth case 9, and impeller 2 adopts the centrifugal three-dimensional flow structure of semi-open type, and to improve the exhaust capacity of impeller, impeller diameter is preferably 400mm to 800mm.The fuel feeding assembly is installed on the turbine acceleration gear box 9, comprise oil pump driving gear pair 12, mechanical lubrication oil pump 13, mechanical lubrication oil pump 13 is installed in the side of turbine acceleration gear box 9 by flange, a gear of oil pump driving gear pair 12 is installed on the axle of mechanical lubrication oil pump 13, the another one gear is installed on the axle of gearwheel 15, the axle of gearwheel 15 drives secondary 12 runnings of oil pump driving gear, drives 13 operations of mechanical lubrication oil pump.The bearing of turbine acceleration gear box 9, gear are thin oil lubricant.When start, at first provide lubricated for turbine acceleration gear box 9 by an electronic auxiliary lubrication pump, by the time after the turbine acceleration gear box 9 normal operations, turbine acceleration gear box 9 drives also normally operation of mechanical lubrication oil pump 13 simultaneously, for turbine acceleration gear box 9 provides lubricated, electronic auxiliary lubrication pump quits work, under normal operation, lubricant oil is mainly provided by mechanical lubrication oil pump 13.When shutting down, because turbine acceleration gear box 9 reduces speed now, mechanical lubrication oil pump 13 supply capabilities are not enough, and electronic auxiliary lubrication pump is started working.By the combination of mechanical lubrication oil pump 13 and electronic auxiliary lubrication pump, for the turbine vacuum machine provides maximum handling safety.
Single stage turbine vacuum machine method for extracting vacuum: impeller 2 drives by the pinion shaft 10 of turbine acceleration gear box 9, rotating speed high speed rotating with 4000r/min, gas is sucked from suction port 1, the gas that enters impeller 2 high speed rotating by the blade band of impeller 2, kinetic energy and static pressure head have been increased, going out impeller 2 then enters in the Diffuser, the kinetic energy of gas changes potential energy in Diffuser, its pressure, temperature raise rapidly, enter spiral case 5 at last, discharge from the exhaust port 6 of spiral case 5, the gas temperature of discharge is 100 ℃.At suction port 1 place of turbine vacuum machine, the flow that sucks gas is 500m
3/ min, the degree of vacuum of formation-20KPa realizes the extraction of vacuum.
Embodiment 2:
Single stage turbine vacuum machine method for extracting vacuum: impeller 2 drives by the pinion shaft 10 of turbine acceleration gear box 9, rotating speed high speed rotating with 12000r/min, gas is sucked from suction port 1, the gas that enters impeller 2 high speed rotating by the blade band of impeller 2, kinetic energy and static pressure head have been increased, going out impeller 2 then enters in the Diffuser, the kinetic energy of gas changes potential energy in Diffuser, its pressure, temperature raise rapidly, enter spiral case 5 at last, discharge from the exhaust port 6 of spiral case 5, the gas temperature of discharge is 180 ℃.At suction port 1 place of turbine vacuum machine, the flow that sucks gas is 1500m
3/ min, the degree of vacuum of formation-60KPa realizes the extraction of vacuum.
If the permission of the intensity of gear shaft and big small gear, machining accuracy, single stage turbine machine pumped vacuum systems of the present invention also can realize the drive two pumps body and the impeller assembly of a turbine acceleration gear box symmetry, or four pump housings and impeller assembly.
Claims (9)
1. a single stage turbine vacuum machine is characterized in that: comprise turbine acceleration gear box, the pump housing and impeller assembly; Gearwheel and pinion in the described turbine acceleration gear box, the axle on the gearwheel connects with prime mover, and the output terminal of pinion shaft connects with impeller; The described pump housing is installed in a side of turbine acceleration gear box, comprises suction casing, spiral case, diffusion guide vane and blade angle controlling mechanism; Described suction casing is embedded in the spiral case, its inwall forms suction port and impeller stationary ring, suction port adopts conical structure, the suction casing that is positioned at the suction port rear end is adopting circular arc with the impeller cooperation position, form the impeller stationary ring, impeller and impeller stationary ring adopt Spielpassung, the inner wall shape of spiral case adopts circular section, its diameter increases gradually along the air-flow sense of rotation, at the impeller outlet place, the suction casing at impeller stationary ring rear portion and the annular housing between the spiral case form Diffuser, and the diffusion guide vane is installed in the Diffuser; The blade angle controlling mechanism is installed in the back of diffusion guide vane, comprise blade contiguous block, piece fixing pin, annulus, bar fixing pin, connecting rod, hanger, air bladder final controlling element, each diffusion guide vane is connected with annulus with the piece fixing pin by a blade contiguous block corresponding with it, and the air bladder final controlling element is connected with annulus by hanger, connecting rod and the bar fixing pin that links to each other successively; Described impeller assembly comprises impeller, pinion shaft, and impeller is installed in the end of the pinion shaft of turbine acceleration gear box, is positioned at the cavity of suction port.
2. single stage turbine vacuum machine according to claim 1 is characterized in that: described impeller is the centrifugal three-dimensional flow structure of semi-open type, and impeller diameter is 400mm to 800mm.
3. single stage turbine vacuum machine according to claim 1 is characterized in that: described diffusion guide vane number is 24 to 30, and circumference evenly distributes.
4. single stage turbine vacuum machine according to claim 3 is characterized in that: described diffusion guide vane adjustable angle, angle of regulation range 8 degree are to 30 degree.
5. according to each described single stage turbine vacuum machine of claim 1-4, it is characterized in that: the diclinic gear that the gearwheel of described turbine acceleration gear box and small gear revolve about adopting.
6. according to each described single stage turbine vacuum machine of claim 1-4, it is characterized in that: the described pump housing also comprises gas axle envelope, and gas axle envelope is installed between spiral case and the pinion shaft.
7. according to each described single stage turbine vacuum machine of claim 1-4, it is characterized in that: described single stage turbine vacuum machine also comprises the fuel feeding assembly, the fuel feeding assembly is installed on the turbine acceleration gear box, comprise oil pump driving gear pair, mechanical lubrication oil pump, a gear of oil pump driving gear pair is installed on the axle of mechanical lubrication oil pump, the another one gear is installed on the axle of gearwheel, and the axle of gearwheel drives the secondary running of oil pump driving gear, drives the machine oil pump operation.
8. application rights requires 1 described single stage turbine vacuum machine method for extracting vacuum, it is characterized in that: impeller drives by turbine acceleration gear box, rotating speed rotation with 4000r/min to 12000r/min, gas is sucked from suction port, through impeller, diffusion guide vane, discharge from the spiral case exhaust port; The flow that sucks gas is 500m
3/ min to 1500m
3/ min in the degree of vacuum of the formation-20KPa of suction port place to-60KPa, realizes the extraction of vacuum.
9. application single stage turbine vacuum machine method for extracting vacuum according to claim 8 is characterized in that: the gas temperature of discharging from the exhaust port of spiral case is 100 ℃ to 180 ℃, realizes energy recovery by heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810219409A CN100590317C (en) | 2008-11-25 | 2008-11-25 | Single stage turbine vacuum pumping machine and method for pumping vacuum by the machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810219409A CN100590317C (en) | 2008-11-25 | 2008-11-25 | Single stage turbine vacuum pumping machine and method for pumping vacuum by the machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101418803A CN101418803A (en) | 2009-04-29 |
| CN100590317C true CN100590317C (en) | 2010-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810219409A Expired - Fee Related CN100590317C (en) | 2008-11-25 | 2008-11-25 | Single stage turbine vacuum pumping machine and method for pumping vacuum by the machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818735A (en) * | 2010-05-10 | 2010-09-01 | 杭州振兴工业泵制造有限公司 | High-speed multistage turbine vacuum pump and evacuation method thereof |
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- 2008-11-25 CN CN200810219409A patent/CN100590317C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818735A (en) * | 2010-05-10 | 2010-09-01 | 杭州振兴工业泵制造有限公司 | High-speed multistage turbine vacuum pump and evacuation method thereof |
| CN101818735B (en) * | 2010-05-10 | 2011-06-29 | 杭州振兴工业泵制造有限公司 | High-speed multistage turbine vacuum pump and evacuation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101418803A (en) | 2009-04-29 |
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