CN101818735B - High-speed multistage turbine vacuum pump and evacuation method thereof - Google Patents
High-speed multistage turbine vacuum pump and evacuation method thereof Download PDFInfo
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- CN101818735B CN101818735B CN2010101676884A CN201010167688A CN101818735B CN 101818735 B CN101818735 B CN 101818735B CN 2010101676884 A CN2010101676884 A CN 2010101676884A CN 201010167688 A CN201010167688 A CN 201010167688A CN 101818735 B CN101818735 B CN 101818735B
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Abstract
The invention discloses a high-speed multistage turbine vacuum pump and an evacuation method thereof, belonging to the technical field of turbine vacuum pumps. The evacuation of multiple processes and different vacuum degrees is realized through multistage high-speed centrifugal impellers, a driving motor of the turbine vacuum pump is connected with a main shaft after being accelerated by a gear speed-increasing box, the main shaft is supported and suspended in a machine shell, a set of centrifugal impellers is connected to the main shaft in the same direction in series, the outer side of the final-stage centrifugal impeller is matched and provided with a balance disc, a single working chamber is respectively formed between each-stage centrifugal impeller and the machine shell, the working chambers are communicated one by one through passageways, a set of suction ports and one discharge port are correspondingly arranged on the machine shell, a balance cavity is formed between the balance disc and the machine shell, and a balance pipe for communicating the balance cavity with each suction port is matched and arranged on the machine shell. By adopting a single-shaft multistage evacuation structure, the high-speed multistage turbine vacuum pump can realize the simultaneous evacuation of multiple processes and different vacuum degrees and greatly reduce the energy consumption of a vacuum pump, and simultaneously has the advantages of compact structure, high reliability, no need of power liquid-sealing rings, environmental protection and the like.
Description
Technical field
The invention belongs to the turbine vacuum pump technical field, comprise vacuum equipment and turbomachinery technology, be specifically related to a kind of high rate turbine vacuum pump that adopts centrifugal impeller suction port extracting vacuum.
Background technique
Common and other equipment composition vacuum systems of vacuum pump, be widely used in departments such as oil, chemical industry, machinery, mine, light industry, medicine, food, electronics, metallurgy, space flight, use wider conventional vacuum pump product and mainly comprise liquid-ring vacuum pump, reciprocating vacuum pump, Roots pump and rotary-vane vaccum pump etc.
Wherein, liquid-ring vacuum pump is a kind of coarse vacuum pump, also can be used as compressor, is used widely in manufacturing processs such as industrial vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum conditioning and vacuum outgas.An amount of liquid is housed as working solution in the pump housing of liquid-ring vacuum pump, and relies on the variation of pump chamber to realize air-breathing, compression and exhaust, it belongs to the variable capacity vacuum pump.Because the existence of circulating liquid, when making liquid-ring vacuum pump have better seal and explosion-proof, efficient is on the low side.
The speed of exhaust of reciprocating vacuum pump is bigger, and degree of vacuum is higher, extensive use in the chemical plant.The reciprocating pump cavity connects two one-way valves, and a mouth sucks, and a mouth is discharged, and comes pumpback compression leg plug, vacuumizes by the suction side.Comparatively speaking, its complex structure, amount of maintenance is big, and efficient is relatively low.
Roots pump is a kind of rotary positive-displacement vacuum pump, and it is developed by Roots blower.Roots pump has bigger pumping speed in the pressure range of broad, and have that driving power is little, compact structure, advantage such as floor space is little and the during-operation service expense is low, therefore, be widely used in metallurgy, petrochemical industry, papermaking, food, electronics industry.Roots pump has the rotor of two figures of eight to be installed in mutual vertically on the pair of parallel axle in pump chamber, by reverse each other the rotatablely moving synchronously of a pair of gear band action.Between rotor, between rotor and the pump case inwall, maintain certain clearance, can realize the high rotational speed operation.
Rotary-vane vaccum pump is a kind of oil seal type oil-sealed rotary pump.It can use separately, also can be used as the fore pump of other high vacuum pump or ultrahigh vacuum pump.It is widely used in metallurgy, machinery, military project, electronics, chemical industry, light industry, oil and medicine etc. and produces and scientific research department.Sliding vane rotary pump mainly is made up of the pump housing, rotor, blade, end cap, spring etc.A rotor is installed in the chamber of sliding vane rotary pump prejudicially, and rotor cylindrical and pump chamber internal surface tangent (the two has very little gap) are equipped with two blades being with spring in the rotor.During rotation, lean on the tension force of centrifugal force and spring that the inwall of blade top and pump chamber is kept in touch, the rotor rotation drives blade and slides along the pump chamber inwall.Rotary-vane vaccum pump belongs to Roughing pump, is one of pumping equipment the most basic in the vacuum technique, but sliding vane rotary pump mostly is middle-size and small-size pump.
In sum, the vacuum pump product of widespread usage is mostly with vacuum displacement pump at present, the situation that ubiquity efficient is lower, and be subjected to rotating speed and be difficult to reach very high restriction, need big rate of air sucked in required coarse vacuum to obtain occasion at some especially, often volume is big, energy consumption is high for required vacuum pump, noise is big.For example, the dewatering process of paper-making process needs a large amount of vacuum pump extracting vacuum of using, and it is very big to require to extract flow, and the diverse location of dehydration plant has different degree of vacuum requirements.At present, what this process point was generally used is that vacuum equipment is Nash hytor (liquid-ring vacuum pump), but the Nash hytor volume that satisfies this occasion performance need is big, noise is big, energy consumption is big, and needs to be equipped with many Nash hytors.In addition, also there is similar problem in the occasion of the big flow extracting vacuum of other industrial field.
In view of the foregoing, can be from another angle, consider that the medium compression of most rotating machinery and suction are two and the process of depositing.For example, liquid-ring vacuum pump can be used as liquid-piston compressor simultaneously, and their difference just is to utilize the inlet intake-gas still to utilize the outlet pressurized gas.Similarly, also there is certain degree of vacuum in general turbocompressor inlet, has certain suction process gas ability, and can realize that big flow extracts, and the efficient of turbine engine can reach more than 80%, far above liquid-ring vacuum pump.
Based on above thought, Hangzhou Zhenxing Industrial Pump Manufacture Co., Ltd. developed cantilever type high rate turbine vacuum pump in 2007, and had obtained national inventing patent.This device energy conservation effect is (with former water-ring pump specific energy economize on electricity 25 ~ 30) significantly; Cancelled the work pendular ring, joint fresh water 99%; Also thoroughly solved problems such as the corrosion of vacuum pump and fouling, existing how tame at present user's use has obtained consistent favorable comment.
Though cantilever type high rate turbine vacuum pump has above advantage, but must want during greater than the occasion of 50Kpa more than the secondary series connection to extract at the extracting vacuum degree, particularly when the many vacuum position of multiple spot extract, as it is complicated to adopt cantilever type high rate turbine vacuum pump the pipeline connection can occur, install shortcomings such as too much, therefore on the whole piece production line of paper machine, use the restriction that is subjected to a certain degree.Therefore, further consider that a kind of brand-new multiple spot of finishing sucks on same cylinder body, the single-shaft multi-stage high rate turbine vacuum pump that plural serial stage obtains high vacuum is very important, the impeller working speed of this structure is more than 5000r/min, reach more than the 15000r/min mostly, the advantage of its relative conventional vacuum pump aspect energy-conservation and compactedness is very obvious, and relatively cantilever type high rate turbine vacuum pump is realizing that more condition of high vacuum degree and multiposition (particularly at 3 more than the position) seem compacter when extracting, more flexible, can on whole piece paper machine, replace liquid-ring vacuum pump, this structure will have very high using value at paper industry, also be starting point of the present invention.
Summary of the invention
But the present invention aims to provide a kind of suction capactity of turbine Centrifugal Impeller Inlet and characteristics of turbomachinery high-speed and high-efficiency running utilized, and high-speed multistage turbine vacuum pump and the vacuum pumping method technological scheme thereof considering to be suitable for a plurality of process point simultaneously, realize the extraction of multi-stage vacuum degree, to overcome problems of the prior art.
Described high-speed multistage turbine vacuum pump, it is characterized in that comprising casing and the drive motor that is connected, gear speedup case, gear speedup case adopts the single-stage speedup, its input end and drive motor are in transmission connection, output terminal and front-end of spindle are in transmission connection, main shaft is by being installed on the front-end bearing pedestal at casing two ends, radial sliding bearing supporting suspension in the rear bearing block is in casing, be connected in series in the same way at a certain distance on the main shaft in the casing one group of centrifugal impeller is set, the final stage centrifugal impeller outside is equipped with Balance disc, constitute single working room between centrifugal impellers at different levels and the casing respectively, be communicated with one by one by runner between each working room, one group of suction port that is communicated with each working room respectively of relative set and an exhaust port that is communicated with the working room of caudal end on the casing, constitute counter balance pocket between Balance disc and the casing, be equipped with the balance tube that counter balance pocket is communicated with each suction port on the casing.
Described high-speed multistage turbine vacuum pump, it is characterized in that separation structure in the described casing employing level, constitute by upper and lower casing cooperation, the fixedly connected back of upper and lower casing cooperates with main shaft seal by the shaft end seal device that two ends are provided with, described suction port all is equipped with on lower housing, the lower housing two ends are provided with front-end bearing pedestal, rear bearing block respectively, by radial sliding bearing, the oil sealing that is installed in front-end bearing pedestal, the rear bearing block main shaft supporting suspension and sealed rotational are cooperated.
Described high-speed multistage turbine vacuum pump is characterized in that the tail end of described main shaft is equipped with thrust bearing and thrust button, and thrust bearing and thrust button are installed in the rear bearing block.
Described high-speed multistage turbine vacuum pump is characterized in that described one group of centrifugal impeller except that the centrifugal impeller of final stage, is equipped with dividing plate, dividing plate sealer respectively in the outside; The inlet of described one group of centrifugal impeller is equipped with the wheel cap sealer respectively; Socket is provided with spacer sleeve on the main shaft between the adjacent centrifugal impeller.
Described high-speed multistage turbine vacuum pump, it is characterized in that described at a certain distance in the same way the serial connection centrifugal impeller that is arranged on main shaft be 2～5 grades, cooperate with main shaft interference suit respectively, the quantity of the suction port that is provided with on the casing is consistent with the quantity of the centrifugal impeller of institute suit.
Described high-speed multistage turbine vacuum pump, it is characterized in that described centrifugal impeller be the suction side extend forward with the closed type structure of free form surface obtaining smooth performance curve, and adopt system of milling or welded structure.
Use the high-speed multistage turbine vacuum pumping method of above-mentioned high-speed multistage turbine vacuum pump, it is characterized in that: one group of suction port of high-speed multistage turbine vacuum pump is connected with the process point that needs vacuumize respectively, drive motor drives the main shaft high speed rotating by gear speedup case, make the one group of centrifugal impeller that is socketed in the same way on the main shaft with the speed rotation identical with main shaft, gas is sucked from each suction port, progressively flow by each working room and the runner that is communicated with the working room again through the acting suction of the centrifugal impeller of high speed rotating to the main shaft tail end, the gas that each suction port extracts is joined step by step, the final high-temperature gas that forms is discharged from exhaust port, thereby the inlet at each suction port and centrifugal impeller forms certain degree of vacuum respectively, realizes multiposition, the extraction of multi-stage vacuum degree.
Described high-speed multistage turbine vacuum pumping method, the rotational speed that it is characterized in that described centrifugal impeller can be realized respectively at the inlet of each suction port and centrifugal impeller-20kPa extracts to-80kPa degree of vacuum more than 5000r/min.
Described high-speed multistage turbine vacuum pumping method, it is characterized in that described one group of suction port is connected according to vacuum requirements with the process point that need vacuumize sets, the occasion that high vacuum level requires is arranged on the main shaft drives end, from drive end caudad vacuum level require progressively to reduce.
Above-mentioned high-speed multistage turbine vacuum pump is novel, rational in infrastructure, adopt the high rate turbine technology to realize that the fast big flow of vacuum extracts, and employing single-shaft multi-stage drawing-out structure, make unit can realize a plurality of process point, extract in the time of the multi-stage vacuum degree, can reduce the vacuum system energy consumption significantly, has compact structure simultaneously, the reliability height, need not worker's lantern ring for liquid seal, advantages of environment protection, be widely used in papermaking, chemical industry, industries such as metallurgy are energy-conservation and environmental protection requirement to vacuum system, use this high-speed multistage turbine vacuum, can realize the vacuum preparation method that extracts to-80kPa multiple spot degree of vacuum with the above high-speed, multi-stage centrifugal impeller of 5000r/min realization-20kPa.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Among the figure: the 1-drive motor, the 2-motor coupler, the 3-gear speedup case, the 4-main shaft, the 5-front-end bearing pedestal, the 5a-rear bearing block, the 6-suction port, the 7-centrifugal impeller, the 8-Balance disc, the 9-exhaust port, the 10-balance tube, 11/11a-shaft end seal device, the 12-thrust button, the 13-thrust bearing, the 14/4a-radial sliding bearing, the 15/15a-oil sealing, the 16-casing, the 16a-upper casing, the 16b-lower housing, 17-wheel cap sealer, the 18-dividing plate, 19-dividing plate sealer, the 20-spacer sleeve, 21-main shaft coupling.
Embodiment
Now, describe the specific embodiment of the present invention in detail in conjunction with Figure of description:
High-speed multistage turbine vacuum pump, drive motor 1 output terminal is in transmission connection with gear speedup case 3 by flexible motor coupler 2, gear speedup case 3 adopts the single-stage speedup, its output terminal is connected with main shaft 4 front ends by flexible main shaft coupling 21, main shaft 4 rotary speed workings are more than 5000r/min, and main shaft 4 cooperates in casing 16 and with casing 16 sealed rotational by front-end bearing pedestal 5, the radial sliding bearing 14 in the rear bearing block 5a, 14a, oil sealing 15a, the 15 supporting suspensions that are installed on casing 16 two ends.For ease of safeguarding and installing, separation structure in the casing 16 employing levels, cooperate by upper casing 16a, lower housing 16b to constitute, between upper casing 16a, the lower housing 16b by locating stud and bolt connect shaft end seal device 11a that the back is provided with by two ends, 11 and main shaft 4 be sealed and matched; Lower housing 16b two ends are provided with front-end bearing pedestal 5, rear bearing block 5a respectively, by radial sliding bearing 14,14a, the oil sealing 15a, 15 that is installed in front-end bearing pedestal 5, the rear bearing block 5a main shaft 4 supporting suspensions and sealed rotational are cooperated.Be connected in series in the same way at a certain distance on the main shaft 4 in the casing 16 one group of centrifugal impeller 7 is set, centrifugal impeller 7 is traditionally arranged to be 2～5 grades, cooperate with main shaft 4 interference suits respectively, socket is provided with spacer sleeve 20 to limit spacing on the main shaft 4 between the adjacent centrifugal impeller 7, centrifugal impeller 7 extends closed type structure with free form surface forward to obtain smooth performance curve for the suction side, employing system of milling or welded structure, this project organization of centrifugal impeller 7 can improve the degree of vacuum and the suction capactity of its inlet, utilizes this thinking design energy efficient significantly; Constitute single working room respectively between centrifugal impellers 7 at different levels and the casing 16, be communicated with one by one by runner between each working room, lower housing 16b goes up one group of suction port 6 that is communicated with each working room respectively of relative set and an exhaust port 9 that is communicated with the working room of caudal end, the quantity of the centrifugal impeller 7 of institute's suit is consistent on the quantity of suction port 6 and the main shaft 4, should be 2～5 mutually, can extract 2～5 different vacuum points respectively, extract the drive end that is arranged on of high vacuum level, arrange from high to low successively, to realize many process point, the extraction of different degree of vacuum also can be sealed certain suction inlet according to the situation of practical vacuum point simultaneously; The high-temperature gas of discharging from exhaust port 9 can connect silencing apparatus and directly discharge, and also can reclaim heat by heat exchanger.Except that the centrifugal impeller 7 of final stage, be equipped with dividing plate 18, dividing plate sealer 19 respectively in centrifugal impeller 7 outsides to prevent gas blowby between adjacent two working rooms; The inlet of centrifugal impellers 7 at different levels is equipped with wheel cap sealer 17 respectively with gas blowby between the import that prevents centrifugal impeller 7 and the outlet.Final stage centrifugal impeller 7 outsides are equipped with Balance disc 8, constitute counter balance pocket between Balance disc 8 and the casing 16, the balance tube 10 that is equipped with on the casing 16 counter balance pocket and suction port 6 UNICOMs constitutes balance sysmte with balancing axial thrust, and in the tail end rear bearing block 5a of main shaft 4, be equipped with thrust bearing 13 and thrust button 12 further to bear remaining axial force, the balance that runs up.
In the foregoing description, wheel cap sealer 17, dividing plate sealer 19, preceding axle head sealer 11a, back axle head sealer 11 adopt maze-type structure respectively, can more effectively improve sealability.
One group of suction port 6 of above-mentioned high-speed multistage turbine vacuum pump is connected with the process point that needs vacuumize respectively, suction port 6 is connected according to vacuum requirements with the process point that need vacuumize to be set, the occasion that high vacuum level requires is arranged on main shaft 4 drive ends, from drive end caudad vacuum level require progressively to reduce.Drive motor 1 drives main shaft 4 high speed rotating by gear speedup case 3, more than the commentaries on classics scooter 5000r/min of main shaft 4, make one group of centrifugal impeller 7 being socketed in the same way on the main shaft 4 with the speed rotation identical with main shaft 4, gas is sucked from each suction port 6, inlet at each suction port 6 and centrifugal impeller 7 can realize respectively-20kPa extracts to-80kPa degree of vacuum, and progressively flow by each working room and the runner that is communicated with the working room again to main shaft 4 tail ends with the acting suction of the centrifugal impeller 7 of high speed rotating, the gas that each suction port 6 extracts is joined step by step, the final high-temperature gas that forms is discharged from exhaust port 9, thereby the inlet at each suction port 6 and centrifugal impeller 7 forms certain degree of vacuum respectively, realizes multiposition, the extraction of multi-stage vacuum degree.
Claims (5)
1. high-speed multistage turbine vacuum pump, the drive motor (1) that it is characterized in that comprising casing (16) and be connected, gear speedup case (3), gear speedup case (3) adopts the single-stage speedup, its input end and drive motor (1) are in transmission connection, output terminal and main shaft (4) front end is in transmission connection, main shaft (4) is by being installed on the front-end bearing pedestal (5) at casing (16) two ends, radial sliding bearing (14a in the rear bearing block (5a), 14) the supporting suspension is in casing (16), be connected in series in the same way at a certain distance on the main shaft (4) in the casing (16) one group of centrifugal impeller (7) is set, final stage centrifugal impeller (7) outside is equipped with Balance disc (8), constitute single working room respectively between centrifugal impellers at different levels (7) and the casing (16), be communicated with one by one by runner between each working room, casing (16) is gone up one a group of suction port (6) that is communicated with each working room respectively of relative set and an exhaust port that is communicated with the working room of caudal end (9), constitute counter balance pocket between Balance disc (8) and the casing (16), be equipped with the balance tube (10) that counter balance pocket is communicated with each suction port (6) on the casing (16); Described centrifugal impeller (7) extends closed type structure with free form surface forward for the suction side; Described one group of centrifugal impeller (7) is equipped with dividing plate (18), dividing plate sealer (19) respectively in the outside except that the centrifugal impeller (7) of final stage; The inlet of described one group of centrifugal impeller (7) is equipped with wheel cap sealer (17) respectively; Described dividing plate sealer (19) and wheel cap sealer (17) adopt maze-type structure respectively; Main shaft (4) between the adjacent centrifugal impeller (7) is gone up socket spacer sleeve (20) is set; Certain suction port (6) can be closed.
2. high-speed multistage turbine vacuum pump as claimed in claim 1, it is characterized in that separation structure in described casing (16) the employing level, by last, lower housing (16a, 16b) cooperate formation, on, lower housing (16a, 16b) fixedly connected back is by the shaft end seal device (11a of two ends setting, 11) be sealed and matched with main shaft (4), described suction port (6) all is equipped with on lower housing (16b), lower housing (16b) two ends are provided with front-end bearing pedestal (5) respectively, rear bearing block (5a) is by being installed in front-end bearing pedestal (5), radial sliding bearing (14a in the rear bearing block (5a), 14), oil sealing (15a, 15) main shaft (4) supporting suspension and sealed rotational are cooperated.
3. high-speed multistage turbine vacuum pump as claimed in claim 1 is characterized in that the tail end of described main shaft (4) is equipped with thrust bearing (13) and thrust button (12), and thrust bearing (13) and thrust button (12) are installed in the rear bearing block (5a).
4. high-speed multistage turbine vacuum pump as claimed in claim 1, it is characterized in that described at a certain distance in the same way the serial connection centrifugal impeller (7) that is arranged on main shaft (4) be 2～5 grades, cooperate with main shaft (4) interference suit respectively, the quantity that casing (16) is gone up the suction port (6) that is provided with is consistent with the quantity of the centrifugal impeller (7) of institute's suit.
5. high-speed multistage turbine vacuum pump as claimed in claim 1 is characterized in that described centrifugal impeller (7) adopts system of milling or welded structure.
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| CN2010101676884A CN101818735B (en) | 2010-05-10 | 2010-05-10 | High-speed multistage turbine vacuum pump and evacuation method thereof |
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| CN2010101676884A CN101818735B (en) | 2010-05-10 | 2010-05-10 | High-speed multistage turbine vacuum pump and evacuation method thereof |
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| CN101818735B true CN101818735B (en) | 2011-06-29 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678582A (en) * | 2012-04-16 | 2012-09-19 | 杭州萧山美特轻工机械有限公司 | High-speed cantilever multistage turbine vacuum pump |
| CN102966599A (en) * | 2012-11-07 | 2013-03-13 | 无锡惠山泵业有限公司 | Water pump equipment |
| CN103742418B (en) * | 2013-01-08 | 2016-10-05 | 摩尔动力(北京)技术股份有限公司 | Pure working medium impeller mechanism |
| CN103307011A (en) * | 2013-05-31 | 2013-09-18 | 嘉兴欧卡特机械设备有限公司 | Negative pressure fan of automatic cutting machine |
| CN104913878A (en) * | 2015-06-04 | 2015-09-16 | 广东石油化工学院 | Rotating equipment dynamic balancing device |
| CN111946661A (en) * | 2020-08-21 | 2020-11-17 | 内蒙古鄂尔多斯联合化工有限公司 | Synthetic gas compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2547914Y (en) * | 2002-07-04 | 2003-04-30 | 肖正群 | Vertical single-suction multi-stage centrifugal liquid chlorine pump |
| CN100478571C (en) * | 2007-09-07 | 2009-04-15 | 浙江大学 | Cantilever type high rate turbine vacuum pump and its evacuation method |
| DE102007048852A1 (en) * | 2007-10-11 | 2009-04-16 | Robert Bosch Gmbh | Compressor housing for turbocharger compressor, particularly for centrifugal compressor, comprises multiple interconnected housing sections, where one housing section is integrated composite section, which has metal frame |
| CN100575710C (en) * | 2008-11-25 | 2009-12-30 | 广州华纸节能科技有限公司 | A kind of multistage turbine vacuum machine and use the method that it extracts multi-stage vacuum |
| CN100590317C (en) * | 2008-11-25 | 2010-02-17 | 广州华纸节能科技有限公司 | Single stage turbine vacuum pumping machine and method for pumping vacuum by the machine |
-
2010
- 2010-05-10 CN CN2010101676884A patent/CN101818735B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2547914Y (en) * | 2002-07-04 | 2003-04-30 | 肖正群 | Vertical single-suction multi-stage centrifugal liquid chlorine pump |
| CN100478571C (en) * | 2007-09-07 | 2009-04-15 | 浙江大学 | Cantilever type high rate turbine vacuum pump and its evacuation method |
| DE102007048852A1 (en) * | 2007-10-11 | 2009-04-16 | Robert Bosch Gmbh | Compressor housing for turbocharger compressor, particularly for centrifugal compressor, comprises multiple interconnected housing sections, where one housing section is integrated composite section, which has metal frame |
| CN100575710C (en) * | 2008-11-25 | 2009-12-30 | 广州华纸节能科技有限公司 | A kind of multistage turbine vacuum machine and use the method that it extracts multi-stage vacuum |
| CN100590317C (en) * | 2008-11-25 | 2010-02-17 | 广州华纸节能科技有限公司 | Single stage turbine vacuum pumping machine and method for pumping vacuum by the machine |
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Effective date of registration: 20200825 Address after: 313300 Modern Industrial Park of Tianzihu Town, Anji County, Huzhou City, Zhejiang Province Patentee after: ZHENXIN TURBINE MACHINERY Co.,Ltd. Address before: 311234 Hongshan three bridge, Xiaoshan District, Zhejiang, Hangzhou Patentee before: HANGZHOU ZHENXING INDUSTRIAL PUMP MANUFACTURE Co.,Ltd. |