CN205714938U - Multistage turbine vacuum pump impeller - Google Patents
Multistage turbine vacuum pump impeller Download PDFInfo
- Publication number
- CN205714938U CN205714938U CN201620374640.3U CN201620374640U CN205714938U CN 205714938 U CN205714938 U CN 205714938U CN 201620374640 U CN201620374640 U CN 201620374640U CN 205714938 U CN205714938 U CN 205714938U
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- CN
- China
- Prior art keywords
- vacuum pump
- blade
- turbine vacuum
- impeller
- multistage turbine
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Abstract
Multistage turbine vacuum pump impeller, belongs to turbine vacuum pump technical field, including wheel disc, wheel cap, it is characterised in that be wholely set linear leaf, short blade on wheel disc, linear leaf and short blade interval equidistant arrangement, and fixing with wheel cap is respectively connected；The blade of this patent uses length to be spaced and is overall structure with wheel disc, novel, rational in infrastructure, the load on individual blade can be reduced by improving the number of blade, improve energy head coefficient, reduce the secondary vortex flow in leaf road, improve the air velocity distribution of impeller inlet, there is impeller channel uniform and smooth, the features such as welding stress is less, impeller adiabatic efficiency is made to improve, pressure ratio promotes to reduce loss, impeller intensity can be improved, improve impeller Stability and dependability, advantageously reduce the flow losses of gas, improve the aeroperformance of turbine vacuum pump, energy-saving effect is more significantly, also there is the service life extending turbine vacuum pump, the use cost of reduction equipment, also help the safe and stable operation of paper making vacuum system.
Description
Technical field
This utility model belongs to multistage turbine vacuum pump technical field, is specifically related to a kind of multistage turbine vacuum pump impeller.
Background technology
Double shrouded wheel is the acting element of multistage turbine vacuum pump, and this impeller has the features such as inlet vane degreeof tortuosity is big, blade passage is longer, impeller outlet width is narrower；Traditional double shrouded wheel is connected and composed by wheel disc, blade, wheel cap three part, it is welded to connect position more, because welding blade stress inequality may result in deformable blade, fracture, blade shape is uneven relatively big on the impact of runner aerodynamic characteristic simultaneously, and impeller channel deviation causes turbine vacuum pump instability of flow；Additionally, due to runner characteristic, after welding, runner cannot be carried out the measure such as reconditioning, root rounding；Owing to blade passage is long, often make stage casing weld seam between blade and wheel cap uneven；Using between blade and wheel disc is welded to connect so that root of blade is rough, can cause poor mobile performance, easily cause vibration equipment.
Utility model content
This utility model aims to provide a kind of blade and uses length to be spaced and be integrally-built multistage turbine vacuum pump impeller technical scheme with wheel disc, to overcome problems of the prior art.
Described multistage turbine vacuum pump impeller, including wheel disc, wheel cap, it is characterised in that be wholely set linear leaf, short blade on wheel disc, linear leaf and short blade interval equidistant arrangement, and fixing with wheel cap is respectively connected.
Described multistage turbine vacuum pump impeller, it is characterised in that described wheel covers and is equipped with blade locating slot and rabbets respectively with linear leaf, short blade and coordinate, be welded and fixed.
Described multistage turbine vacuum pump impeller, it is characterised in that described linear leaf and short blade are respectively adopted distortion formula blade construction.
Described multistage turbine vacuum pump impeller, it is characterised in that be respectively adopted welding connection structure between described linear leaf, short blade and wheel cap.
Described multistage turbine vacuum pump impeller, it is characterised in that described linear leaf, short blade become fillet structure with wheel disc junction.
Described multistage turbine vacuum pump impeller, it is characterised in that by arranging centre bore with multistage turbine vacuum pump main shaft without key interference fit joint on described wheel disc.
Described multistage turbine vacuum pump impeller, it is characterised in that described blade locating slot is the groove structure that inside and outside milling is logical.
Above-mentioned multistage turbine vacuum pump impeller, blade uses length to be spaced and is overall structure with wheel disc, novel, rational in infrastructure, the load on individual blade can be reduced by improving the number of blade, improve energy head coefficient, reduce the secondary vortex flow in leaf road, improve the air velocity distribution of impeller inlet, there is impeller channel uniform and smooth, the features such as welding stress is less, impeller adiabatic efficiency is made to improve, pressure ratio promotes to reduce loss, impeller intensity can be improved, improve impeller Stability and dependability, advantageously reduce the flow losses of gas, improve the aeroperformance of turbine vacuum pump, energy-saving effect is more significantly, also there is the service life extending turbine vacuum pump, the use cost of reduction equipment, also help the safe and stable operation of paper making vacuum system.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is the partial cutaway right view removing part wheel cap of Fig. 1；
In figure: 1-wheel disc, 2-linear leaf, 3-short blade, 4-wheel cap, 5-blade locating slot, 6-multistage turbine vacuum pump main shaft.
Detailed description of the invention
In conjunction with Figure of description, describe detailed description of the invention of the present utility model in detail:
Multistage turbine vacuum pump impeller, use double shrouded wheel structure, linear leaf 2, short blade 3 it is wholely set on wheel disc 1, the mode milling from a forging that can use machining center numerical control entirety Milling Process goes out wheel disc 1 and the linear leaf 2 being connected with its one, short blade 3, linear leaf 2, short blade 3 are same forging with wheel disc 1 before processing, all linear leafs 2, the equal digit control of short blade 3 process, the torsion resistance of each linear leaf 2, profile, thickness all can reach unanimously, and short blade 3 is too；Linear leaf 2, the root of short blade 3 become fillet with wheel disc 1 junction milling, such integral connecting structure does not easily cause error, decrease conventionally manufactured Leaf and be welded and fixed formed defect with wheel disc, including avoiding traditional welding root of blade not weld penetration, R uneven etc., drawback has the excellent properties such as crudy is good, blade strength is high, through-current capability is stable, is also beneficial to reduce the flow losses of gas, to improve the aeroperformance of turbine vacuum pump, energy-saving effect more significantly；Linear leaf 2 and short blade 3 are respectively adopted distortion formula blade construction, and on wheel disc 1, it is spaced equidistant arrangement setting, use the structure at deviated splitter vane interval, make to use the more number of blade than tradition linear leaf in design, reduce load on individual blade, thus improve energy head coefficient, make device efficiency improve；On the other hand, short blade is typically the truncate of linear leaf, decreases the secondary vortex flow of Ye Daozhong, improves the air velocity distribution of impeller inlet；nullLinear leaf 2 and short blade 3 are fixing by being welded to connect respectively with wheel cap 4，Blade locating slot 5 it is equipped with on wheel cap 4，Blade locating slot 5 uses the groove structure that inside and outside milling is logical，Linear leaf 2、The stage casing interlocking of short blade 3 is connected fixing by welding in blade locating slot 5 with wheel cap 4，Wheel cap 4 and linear leaf 2、The blade locating slot 5 that short blade 3 contact surface and wheel cover the most all can use digital control processing，The blade outer rim molded line that can realize and design is completely the same，This joint construction can be used for the wheel cap 4 location before being welded and fixed，Also allow for linear leaf 2、Welding operation between stage casing and the wheel cap 4 of short blade 3，Improve welding quality，Be conducive to stablizing of blade strength and multistage turbine vacuum pump flow，Linear leaf 2 before welding can be used、The stage casing extension blade of short blade 3，Complete numerical control finish turning wheel cap 4 outer rim after welding；By arranging centre bore with multistage turbine vacuum pump main shaft 6 without key interference fit joint on wheel disc 1, turbine vacuum pump can be avoided to run up the impeller axial float that causes of high temperature produced, be conducive to improving the stability of high speed rotor, make turbine vacuum pump keep stable tolerance and vacuum.
Claims (7)
1. multistage turbine vacuum pump impeller, including wheel disc (1), wheel cap (4), it is characterized in that being wholely set linear leaf (2), short blade (3) on wheel disc (1), linear leaf (2) and short blade (3) interval equidistant arrangement are arranged, and fixing with wheel cap (4) are respectively connected.
2. multistage turbine vacuum pump impeller as claimed in claim 1, it is characterised in that be equipped with blade locating slot (5) on described wheel cap (4) and rabbet respectively with linear leaf (2), short blade (3) and coordinate, be welded and fixed.
3. multistage turbine vacuum pump impeller as claimed in claim 1, it is characterised in that described linear leaf (2) and short blade (3) are respectively adopted distortion formula blade construction.
4. multistage turbine vacuum pump impeller as claimed in claim 1, it is characterised in that be respectively adopted welding connection structure between described linear leaf (2), short blade (3) and wheel cap (4).
5. multistage turbine vacuum pump impeller as claimed in claim 1, it is characterised in that described linear leaf (2), short blade (3) become fillet structure with wheel disc (1) junction.
6. multistage turbine vacuum pump impeller as claimed in claim 1, it is characterised in that by arranging centre bore with multistage turbine vacuum pump main shaft (6) without key interference fit joint on described wheel disc (1).
7. multistage turbine vacuum pump impeller as claimed in claim 2, it is characterised in that described blade locating slot (5) is the groove structure that inside and outside milling is logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620374640.3U CN205714938U (en) | 2016-04-28 | 2016-04-28 | Multistage turbine vacuum pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620374640.3U CN205714938U (en) | 2016-04-28 | 2016-04-28 | Multistage turbine vacuum pump impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714938U true CN205714938U (en) | 2016-11-23 |
Family
ID=57292736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620374640.3U Expired - Fee Related CN205714938U (en) | 2016-04-28 | 2016-04-28 | Multistage turbine vacuum pump impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714938U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762742A (en) * | 2017-01-03 | 2017-05-31 | 滨州东瑞机械有限公司 | A kind of high rate turbine vacuum pump with energy recovery turbine |
| CN111188790A (en) * | 2018-11-15 | 2020-05-22 | 苏州磁锋能源科技有限公司 | Novel three-dimensional flow closed impeller structure and machining method |
-
2016
- 2016-04-28 CN CN201620374640.3U patent/CN205714938U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762742A (en) * | 2017-01-03 | 2017-05-31 | 滨州东瑞机械有限公司 | A kind of high rate turbine vacuum pump with energy recovery turbine |
| CN111188790A (en) * | 2018-11-15 | 2020-05-22 | 苏州磁锋能源科技有限公司 | Novel three-dimensional flow closed impeller structure and machining method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |