CN2072611U - Low-proportion revolution centrifugal pump impeller short vane polarization - Google Patents
Low-proportion revolution centrifugal pump impeller short vane polarization Download PDFInfo
- Publication number
- CN2072611U CN2072611U CN 90214371 CN90214371U CN2072611U CN 2072611 U CN2072611 U CN 2072611U CN 90214371 CN90214371 CN 90214371 CN 90214371 U CN90214371 U CN 90214371U CN 2072611 U CN2072611 U CN 2072611U
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- CN
- China
- Prior art keywords
- centrifugal pump
- proportion
- low
- polarization
- short blade
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model belongs to the technological field of water power mechanism. Both the long and short vanes of the former centrifugal pumps with low specific speed adopt the symmetric distribution. The short vanes are eccentrically put in the long vanes, and the bias proportion is in the range of 0.8-0.9, and thus the efficiency of the pump can be increased by 2 % more or less.
Description
The utility model belongs to the hydraulic machinery technical field.
The design of low specific speed centrifugal pump impeller in the past, the design proposal that adopts deviated splitter vane to cooperate for a long time.As scheme in the interior IS series pump, it is to use this method that some models are just arranged.The 3rd phase of nineteen eighty-two " pump technology " has reported that Soviet Union scholar has adopted the design proposal of more short blade (long and short blade is 1:2 than number) to improve the energy characteristics of low specific speed centrifugal pump.But in these schemes, all adopted the method for short blade and linear leaf symmetric arrangement.
The purpose of this utility model is exactly further to improve the energy characteristics of low specific speed centrifugal pump.
The utility model has been done improvement to the layout of deviated splitter vane on the basis of theory analysis and test, promptly the layout of deviated splitter vane changes over eccentrically arranged type by original symmetric form.Owing in the low specific speed centrifugal pump impeller, after the relative movement of liquid is subjected to the influence of axial vortex, make that the velocity distribution in adjacent two vane channels is the state shown in the accompanying drawing 1.When adopting symmetrical distribution, on short blade import distribution circle, place short blade with the linear leaf symmetry, then order causes the flow that passes through in adjacent two runners of short blade unequal, thereby make the speed that enters delivery chamber also with inhomogeneous, this can strengthen in the impeller and the hydraulic loss outside the impeller outlet limit.Because impeller inlet is before the short blade import, the relative velocity of face of blade is ever-reduced, this can cause the separation of flow of liquid on the blade, cause vortex region, especially in the small flow zone, this will produce bigger hydraulic loss, under the effect of squeezing of short blade, can play certain inhibitory action to the separation of flow.Analyze and the mobile statistics of calculating the gained velocity distribution of relevant ternary according to velocity distribution measurement result in the vane channel, the short blade inlet side suitably is offset to the linear leaf back side, improve the flowing state of impeller and delivery chamber with this, thereby obtain higher hydraulic performance, the short blade import is high and low relevant to the specific speed of the degree of linear leaf back side skew and pump, and relevant with the length of short blade.Correct side-play amount should be with reference to the result of actual measurement velocity distribution situation or theoretical calculation velocity distribution in the impeller.The increase rate of pump efficiency can be bigger like this, and in the ordinary course of things, biasing is than (I
1/ I
2) be 0.8-0.9, can make the efficient of pump improve about 2%.Short blade import this moment distribution circle diameter D
* 1=0.7-0.8D
2(D
2External diameter for impeller).
The utility model has been compared tangible advantage than the method for traditional symmetric arrangement, and comparative trial shows, works as n
s=40 o'clock, short blade offset was compared with not setovering, and the efficient of pump can improve about 2%.
Accompanying drawing 1: for relative velocity in the impeller channel distributes
Accompanying drawing 2: the biasing of short blade
Accompanying drawing 3: the comparison of energy characteristics, wherein, dotted line is an eccentrically arranged type, solid line is a symmetric arrangement
Embodiment of the present utility model:
The short blade offset of low specific speed centrifugal pump as shown in Figure 2, it is biased to I
1/ I
2=0.8-0.9, short blade import this moment distribution circle diameter D
* 1=0.7-0.8D
2(D
2External diameter for impeller).
Claims (2)
1, the centrifugal pump of a kind of low specific speed, deviated splitter vane mixed-arrangement is characterized in that its short blade offset.
2, centrifugal pump as claimed in claim 1 is characterized in that short blade is alternate to be biased in the linear leaf that the ratio that its deviated splitter vane is arranged is 0.8-0.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90214371 CN2072611U (en) | 1990-07-20 | 1990-07-20 | Low-proportion revolution centrifugal pump impeller short vane polarization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90214371 CN2072611U (en) | 1990-07-20 | 1990-07-20 | Low-proportion revolution centrifugal pump impeller short vane polarization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2072611U true CN2072611U (en) | 1991-03-06 |
Family
ID=4893770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90214371 Withdrawn CN2072611U (en) | 1990-07-20 | 1990-07-20 | Low-proportion revolution centrifugal pump impeller short vane polarization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2072611U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182703A (en) * | 2011-05-09 | 2011-09-14 | 中国石油大学(华东) | Efficient non-plugging discontinuous impeller of vane pump |
| CN102562651A (en) * | 2012-03-08 | 2012-07-11 | 江苏大学 | High-efficiency wind-powered centrifugal pump impeller |
| CN101586579B (en) * | 2009-04-23 | 2012-12-05 | 李新桥 | Sludge pump impeller with splitter vanes |
| CN103775377A (en) * | 2013-12-31 | 2014-05-07 | 江苏大学 | Torque flow pump hydraulic design method by adopting long-short vanes |
| CN106337833A (en) * | 2015-07-06 | 2017-01-18 | 杭州三花研究院有限公司 | Impeller, centrifugal pump and electric drive pump |
| CN106555775A (en) * | 2015-09-30 | 2017-04-05 | 杭州三花研究院有限公司 | Impeller, rotor assembly, centrifugal pump and electric drive pump |
| CN112302993A (en) * | 2020-11-25 | 2021-02-02 | 江苏大学 | Centrifugal pump impeller with offset wing type short blades |
| CN115076156A (en) * | 2022-07-29 | 2022-09-20 | 江苏大学 | Full-flow high-efficiency high-speed centrifugal pump |
| US11525454B2 (en) | 2018-06-06 | 2022-12-13 | Jiangsu University | Semi-open centrifugal pump impeller and its optimization design |
-
1990
- 1990-07-20 CN CN 90214371 patent/CN2072611U/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586579B (en) * | 2009-04-23 | 2012-12-05 | 李新桥 | Sludge pump impeller with splitter vanes |
| CN102182703A (en) * | 2011-05-09 | 2011-09-14 | 中国石油大学(华东) | Efficient non-plugging discontinuous impeller of vane pump |
| CN102182703B (en) * | 2011-05-09 | 2015-12-09 | 中国石油大学(华东) | A kind of discontinuous impeller of vane pump without blocking |
| CN102562651A (en) * | 2012-03-08 | 2012-07-11 | 江苏大学 | High-efficiency wind-powered centrifugal pump impeller |
| CN103775377A (en) * | 2013-12-31 | 2014-05-07 | 江苏大学 | Torque flow pump hydraulic design method by adopting long-short vanes |
| CN106337833A (en) * | 2015-07-06 | 2017-01-18 | 杭州三花研究院有限公司 | Impeller, centrifugal pump and electric drive pump |
| CN106555775A (en) * | 2015-09-30 | 2017-04-05 | 杭州三花研究院有限公司 | Impeller, rotor assembly, centrifugal pump and electric drive pump |
| CN106555775B (en) * | 2015-09-30 | 2020-06-23 | 浙江三花汽车零部件有限公司 | Impeller, rotor assembly, centrifugal pump and electric drive pump |
| US11525454B2 (en) | 2018-06-06 | 2022-12-13 | Jiangsu University | Semi-open centrifugal pump impeller and its optimization design |
| CN112302993A (en) * | 2020-11-25 | 2021-02-02 | 江苏大学 | Centrifugal pump impeller with offset wing type short blades |
| CN115076156A (en) * | 2022-07-29 | 2022-09-20 | 江苏大学 | Full-flow high-efficiency high-speed centrifugal pump |
| CN115076156B (en) * | 2022-07-29 | 2024-03-05 | 江苏大学 | Full-flow high-efficiency high-speed centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |