CN104405678B - A kind of centrifugal impeller of band without leaf splitter - Google Patents
A kind of centrifugal impeller of band without leaf splitter Download PDFInfo
- Publication number
- CN104405678B CN104405678B CN201410538121.1A CN201410538121A CN104405678B CN 104405678 B CN104405678 B CN 104405678B CN 201410538121 A CN201410538121 A CN 201410538121A CN 104405678 B CN104405678 B CN 104405678B
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- impeller
- blade
- leaf
- leaf splitter
- splitter
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of centrifugal impeller of band without leaf splitter.This is a kind of flex foils with uniform thickness without leaf splitter, and it is connected with front shroud of impeller and back shroud of impeller, between adjacent two blade, is uniformly distributed along the circumference.The portion of runner that the structure is exported by clogging impeller, to realize that impeller goes out to flow even flow field reconstruct, reach the purpose of elevator pump performance.Its outer surface and impeller outlet flush, and thickness is identical with exit edge of blade thickness, and number is identical with impeller blade number.Without leaf splitter away from front side of vane closer to vacuum side of blade, the distance a at its centre distance blade exit back side arc length between adjacent two blade（1/4~1/2）, its blocked area is impeller outlet runner flow section area（1/6~1/3）.
Description
Technical field
The present invention relates to a kind of centrifugal pump impeller, belong to field of fluid machinery.
Background technology
Centrifugal pump is a kind of extremely wide universal fluid machinery of purposes, and key player is play in every field,
Substantial amounts of electric power is also consumes simultaneously, therefore improves construction of the performance of centrifugal pump for novel saving type society there is important meaning
Justice.Centrifugal pump mainly by impeller with the big waterpower parts group of spiral case two into both matching properties have together decided on the property of centrifugal pump
Energy.The geometric parameter of spiral case is few, and design is relatively simple, and impeller profile is in spatial warping shape, and geometric parameter is complicated, and design is difficult
Degree is big, therefore the difficulties for being designed to Centrifugal Pump Design of efficient centrifugal impeller；The design principle of high-efficiency vane wheel is to try to
The hydraulic loss of impeller internal is reduced, makes fluid along vane type line smooth flow.
From the conventional impeller internal Real Flow Field rule of accompanying drawing 5：Influenceed by the limited number of blade, centrifugal pump impeller outlet is in
Now typical jet-tail probability series, the i.e. relative velocity close to blade exit working face are more than the flow velocity of vacuum side of blade, in leaf
The piece back side forms obvious wake zone, causes larger hydraulic loss；Larger speed between jet and wake zone be present simultaneously
Gradient, jet-wake shear layer is easily formed, equally will also result in part hydraulic loss, therefore control the flowing of impeller outlet
State, the performance of centrifugal pump can be effectively improved by improving harmful fluidal texture.
Research currently for centrifugal pump impeller focuses primarily upon the excellent of the factors such as vane type line, geometric parameter, the number of blade
Change.Lu Weigang, Zhang Desheng, wangkai et al. are studied influence of the impeller geometric parameter to pump performance；It is most of at present
Study all from optimization impeller geometric parameter, explore different parameters with the influence for comparing pump performance, fail to go out from improvement impeller
Mouth fluidal texture essence is set out, influence of the research jet-tail probability series to performance, so as to further improve the energy of pump
Performance, therefore by controlling impeller outlet flow regime that there is practical significance to the performance for improving pump.
The content of the invention
In order to further improve the performance of centrifugal pump, the present invention goes out from control impeller outlet jet-tail probability series principle
Hair, a kind of centrifugal impeller of band without leaf splitter is proposed, the impeller is simple, reasonable, effectively reduces the waterpower damage of impeller outlet
Lose, further increase the lift of pump, improve the performance of centrifugal pump.
The present invention is a kind of centrifugal impeller of band without leaf splitter, and this is a kind of curved with uniform thickness without leaf splitter
Bent thin slice, this is connected without leaf splitter with front shroud of impeller and back shroud of impeller, between adjacent two blade, along circumference of impeller
Uniformly.
The portion of runner that the structure is exported by clogging impeller, to realize that impeller goes out to flow even flow field reconstruct, reach lifting
The purpose of pump performance；Its outer surface and impeller outlet flush, and thickness is identical with exit edge of blade thickness, number and impeller blade number
It is identical；Without leaf splitter away from front side of vane, closer to vacuum side of blade, the distance a at its centre distance blade exit back side is
Arc length between adjacent two blade（1/4~1/2）, its blocked area is impeller outlet runner flow section area（1/6~1/
3）.
It is an advantage of the invention that：From jet-tail probability series of control impeller outlet, chip architecture is shunted using without leaf
The portion of runner of clogging impeller outlet, reduces its area of passage, forces increase to improve impeller close to the fluid velocity of vacuum side of blade
Velocity gradient distribution character in runner, the lift of pump is improved, be advantageous to suitably reduce impeller outer diameter in Impeller Design, reduce
Disc friction, mechanical efficiency is improved, further improve the performance of pump.Simultaneously the present invention also have it is simple and reasonable for structure, plus
The advantages that work facilitates.
Brief description of the drawings
Fig. 1 is centrifugal impeller axis projection of the band without leaf splitter of the present invention.
Fig. 2 is centrifugal impeller plane figure of the band without leaf splitter of the present invention.
Fig. 3 is the plane outspread drawing of centrifugal impeller outlet flow flow section of the band without leaf splitter of the present invention.
Fig. 4 is centrifugal impeller output flow structure chart of the band without leaf splitter of the present invention.
Fig. 5 is the output flow structure chart of traditional centrifugal impeller.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 gives the axis projection of centrifugal impeller, as seen from the figure：This is without leaf splitter 5 and front shroud of impeller 1 and leaf
Back shroud 2 is taken turns to be connected.
As shown in Figure 2：Impeller blade number is 5, and no leaf splitter 5 is evenly distributed between each runner of impeller, its thickness
It is equal with the thickness of exit edge of blade 7,5mm is taken as, its outer surface and impeller outlet 6 flush.
Fig. 3 gives the plane outspread drawing of impeller outlet runner flow section, no centre-to-centre spacing vacuum side of blade 4 of leaf splitter 5
Distance be less than the distance away from front side of vane 3, and the distance a of its centre-to-centre spacing vacuum side of blade flows between impeller outlet adjacent blades
The 30% of road length, its blocked area are the 20% of blade exit adjacent channels flow section area.
Fig. 4,5 give the present invention centrifugal impeller and traditional centrifugal impeller of the band without leaf splitter output flow knot
Composition, pass through contrast：After increase shunts chip architecture without leaf, speed substantially increases in impeller outlet tail area, jet-wake
Structure significantly improves, and the outlet of conventional centrifugal impeller has more significant wake zone, and relative velocity is smaller in the area,
Energy dissipation is easily caused, increases the hydraulic loss of pump, reduces its performance.
The performance of pump is predicted using CFD means in this example, under the conditions of identical impeller and spiral case, Centrifugal Pump Design
At point, after chip architecture is shunted without leaf, the lift of centrifugal pump rises 7%, and efficiency improves 0.5%.Present invention improves leaf
Output flow structure is taken turns, so as to reach the purpose for reducing pump internal flow loss, and then improves the performance of pump.
Claims (3)
- A kind of 1. centrifugal impeller of band without leaf splitter, it is characterised in that：The no leaf splitter and front shroud and back shroud phase Even, impeller outlet is arranged on, uniform along circumference of impeller between adjacent two blade, the part exported by clogging impeller is flowed Road, to realize that impeller goes out to flow even flow field reconstruct, reach the purpose of elevator pump performance；Outer surface and impeller without leaf splitter go out Mouth flushes；Without leaf splitter away from front side of vane, closer to vacuum side of blade, the distance a of its centre distance vacuum side of blade is phase (1/4~1/2) of arc length between adjacent two blades；Blocked area without leaf splitter is impeller outlet adjacent channels flow section (1/6~1/3) of area.
- A kind of 2. centrifugal impeller of band without leaf splitter as claimed in claim 1, it is characterised in that：Without leaf splitter thickness with Exit edge of blade thickness is identical.
- A kind of 3. centrifugal impeller of band without leaf splitter as claimed in claim 1, it is characterised in that：Quantity without leaf splitter It is identical with impeller blade number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538121.1A CN104405678B (en) | 2014-10-14 | 2014-10-14 | A kind of centrifugal impeller of band without leaf splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538121.1A CN104405678B (en) | 2014-10-14 | 2014-10-14 | A kind of centrifugal impeller of band without leaf splitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104405678A CN104405678A (en) | 2015-03-11 |
| CN104405678B true CN104405678B (en) | 2018-02-27 |
Family
ID=52643332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410538121.1A Active CN104405678B (en) | 2014-10-14 | 2014-10-14 | A kind of centrifugal impeller of band without leaf splitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104405678B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU185106U1 (en) * | 2018-02-07 | 2018-11-21 | Общество с ограниченной ответственностью Научно-производственная фирма "АДЕС" | Centrifugal pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2103038U (en) * | 1991-08-13 | 1992-04-29 | 机械电子工业部合肥通用机械研究所 | Small flow supper low-rate revolution impeller |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3516530B2 (en) * | 1995-07-28 | 2004-04-05 | 日機装株式会社 | Low specific speed impeller |
| CN201416568Y (en) * | 2009-05-21 | 2010-03-03 | 上海俊乐制冷自控元件有限公司 | Drain pump impeller |
| CN201925222U (en) * | 2011-01-14 | 2011-08-10 | 重庆路沃发动机有限公司 | Impeller for cooling water pump of motorcycle engine |
| NO334954B1 (en) * | 2012-11-12 | 2014-08-04 | Agr Subsea As | Centrifugal pump impeller and its use in pumping drilling fluid containing drill cuttings |
| CN103573693A (en) * | 2013-11-12 | 2014-02-12 | 成都科盛石油科技有限公司 | Low-specific-speed centrifugal pump impeller |
-
2014
- 2014-10-14 CN CN201410538121.1A patent/CN104405678B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2103038U (en) * | 1991-08-13 | 1992-04-29 | 机械电子工业部合肥通用机械研究所 | Small flow supper low-rate revolution impeller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU185106U1 (en) * | 2018-02-07 | 2018-11-21 | Общество с ограниченной ответственностью Научно-производственная фирма "АДЕС" | Centrifugal pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104405678A (en) | 2015-03-11 |
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