CN207830207U - A kind of centrifugal pump impeller - Google Patents
A kind of centrifugal pump impeller Download PDFInfo
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- CN207830207U CN207830207U CN201721880342.2U CN201721880342U CN207830207U CN 207830207 U CN207830207 U CN 207830207U CN 201721880342 U CN201721880342 U CN 201721880342U CN 207830207 U CN207830207 U CN 207830207U
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- spoiler
- blade
- centrifugal pump
- back shroud
- thickness
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Abstract
A kind of centrifugal pump impeller disclosed by the utility model, including back shroud, multiple blades are evenly arranged on back shroud, the pressure face end of each blade afterbody is provided with spoiler, and spoiler is arranged along the radial direction of back shroud, the thickness of spoiler is the 1/5~1/3 of vane thickness, and the length of spoiler is equal with the momentum layer of blade position loss thickness, and the height of spoiler is equal with the height of blade.By the way that spoiler is arranged on blade, through-flow effect of the fluid in runner can be improved, make to move after high pressure zone position at runner exit while increasing blade suction surface pressure, to delay the formation of flow separation and stall whirlpool, flow separation and stall problem of the centrifugal pump under low flow rate condition are effectively reduced, the interior external characteristics of pump is further increased.
Description
Technical field
The utility model belongs to centrifugation pump technical field, is related to a kind of centrifugal pump impeller.
Background technology
When centrifugal pump is run under low flow rate condition, since the reduction of flow makes axis plane velocity reduce, the angle of attack increases, fluid
There is flow separation in blade suction surface, form separation vortex, separation vortex is developing progressively as stall group, and stall group is plugging stream
Road destroys proper flow, seriously affects the operation stability and efficiency of pump.
The research for centrifuging pump stall is mostly rested at present, stall event inside centrifugal pump under low flow rate condition is divided
It analyses and to that in the analysis of stall group kinetic characteristic, can not reduce and control the stall event of centrifugal pump, to centrifugal blade itself
The optimization design effect unobvious of progress.
Utility model content
The purpose of this utility model is to provide a kind of centrifugal pump impellers, can reduce centrifugal pump under low flow rate condition
Flow separation and stall event.
The utility model is the technical scheme adopted is that a kind of centrifugal pump impeller, including back shroud, is uniformly set on back shroud
Multiple blades are equipped with, the pressure face end of each blade afterbody is provided with spoiler, and spoiler is arranged along the radial direction of back shroud,
The thickness of spoiler is the 1/5~1/3 of vane thickness, and the length of spoiler loses thickness phase with the momentum layer of blade position
Deng the height of spoiler is equal with the height of blade.
The utility model is also characterized by
The quantity of blade is 4~6.
The beneficial effects of the utility model are：
The impeller of the utility model can improve through-flow effect of the fluid in runner by the way that spoiler is arranged on blade,
Make to move after high pressure zone position at runner exit, to delay the formation of flow separation and stall whirlpool, effectively reduces centrifugal pump small
Flow separation under flow rate working conditions and stall event further increase the interior external characteristics of pump.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of centrifugal pump impeller of the utility model；
Fig. 2 is a kind of structural schematic diagram of centrifugal pump impeller intra vane of the utility model.
In figure, 1. back shrouds, 2. blades, 3. spoilers.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of centrifugal pump impeller of the utility model is evenly arranged with more as shown in Figure 1, including back shroud 1 on back shroud 1
The pressure face end of a blade 2,2 tail portion of each blade is provided with spoiler 3, and spoiler 3 is arranged along the radial direction of back shroud 1,
As shown in Fig. 2, the height of spoiler 3 is equal with the height of blade 2, the thickness c of spoiler 3 is the 1/5~1/3 of 2 thickness of blade,
The length h of spoiler 3 is equal with the momentum layer of 2 position of blade loss thickness θ, and specific formula for calculation is as follows：U is the velocity component that 3 position of spoiler is parallel to blade surface in formula, and U is blade institute
External potential barrier speed corresponding to position, y are the distance perpendicular to blade surface, and boundary layer thickness δ takes blade surface to speed
Spend the distance at u=0.99U.
The quantity of blade 2 is 4~6.
Preferably, the quantity of blade 2 is 5.
A kind of course of work of centrifugal pump impeller of the utility model is as follows：
When work, fluid enters along blade 2 in the runner on back shroud 1, and at runtime, spoiler 3 prevents blade to blade 2
The tail of a runner enters next runner on 2, and forms higher-pressure region in next runner exit, and spoiler 3 makes in next runner
It is moved after high pressure zone position；Spoiler 3 improves the pressure of 2 suction surface of blade while increasing 2 pressure surface pressure of blade, postpone leaf
2 suction surface boundary layer separation of piece, makes to be not susceptible to flow separation；To reduce the possibility that stall occurs for runner, can effectively solve
Certainly centrifuge pump stall problem.
In the above manner, the impeller of the utility model can improve fluid in runner by the way that spoiler is arranged on blade
Interior through-flow effect makes to move after high pressure zone position at runner exit while increasing blade suction surface pressure, to delay to flow
The formation of dynamic separation and stall whirlpool, effectively reduces flow separation and stall problem of the centrifugal pump under low flow rate condition, further
Improve the interior external characteristics of pump.
Claims (2)
1. a kind of centrifugal pump impeller, which is characterized in that including back shroud (1), multiple leaves are evenly arranged on the back shroud (1)
The pressure face end of piece (2), each blade (2) tail portion is provided with spoiler (3), and the spoiler (3) is along back shroud
(1) radial setting, the thickness of the spoiler (3) are the 1/5~1/3 of blade (2) thickness, the length of the spoiler (3)
Equal with the momentum layer of blade (2) position loss thickness, the height of the spoiler (3) is equal with the height of blade (2).
2. a kind of centrifugal pump impeller as described in claim 1, which is characterized in that the quantity of the blade (2) is 4~6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880342.2U CN207830207U (en) | 2017-12-28 | 2017-12-28 | A kind of centrifugal pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880342.2U CN207830207U (en) | 2017-12-28 | 2017-12-28 | A kind of centrifugal pump impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830207U true CN207830207U (en) | 2018-09-07 |
Family
ID=63390450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721880342.2U Active CN207830207U (en) | 2017-12-28 | 2017-12-28 | A kind of centrifugal pump impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830207U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043507A (en) * | 2019-05-23 | 2019-07-23 | 萨震压缩机（上海）有限公司 | A kind of energy-saving centrifugal impeller |
| CN113153809A (en) * | 2020-12-31 | 2021-07-23 | 西安航空学院 | High-speed centrifugal wheel with bionic fish tail fin |
-
2017
- 2017-12-28 CN CN201721880342.2U patent/CN207830207U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043507A (en) * | 2019-05-23 | 2019-07-23 | 萨震压缩机（上海）有限公司 | A kind of energy-saving centrifugal impeller |
| CN110043507B (en) * | 2019-05-23 | 2024-06-07 | 萨震压缩机（上海）有限公司 | Energy-saving centrifugal impeller |
| CN113153809A (en) * | 2020-12-31 | 2021-07-23 | 西安航空学院 | High-speed centrifugal wheel with bionic fish tail fin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201119 Address after: No.2358, east side of Chang'an Road, Wujiang Economic and Technological Development Zone, Suzhou, Jiangsu Province, 215200 Patentee after: Suzhou Xili Technology Services Ltd. Address before: 710048 Shaanxi city of Xi'an Province Jinhua Road No. 5 Patentee before: XI'AN University OF TECHNOLOGY |
|
| TR01 | Transfer of patent right |