CN106015084A - Centrifugal pump impeller capable of reducing flow rate - Google Patents
Centrifugal pump impeller capable of reducing flow rate Download PDFInfo
- Publication number
- CN106015084A CN106015084A CN201610511661.XA CN201610511661A CN106015084A CN 106015084 A CN106015084 A CN 106015084A CN 201610511661 A CN201610511661 A CN 201610511661A CN 106015084 A CN106015084 A CN 106015084A
- Authority
- CN
- China
- Prior art keywords
- impeller
- subtract
- centrifugal pump
- blade
- flow
- Prior art date
- 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.)
- Granted
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Classifications
-
- 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
- F04D29/2205—Conventional flow pattern
- F04D29/2216—Shape, geometry
Abstract
The invention discloses a centrifugal pump impeller capable of reducing flow rate. The centrifugal pump impeller comprises a front cover, a rear cover and a vane and is characterized in that a flow reducing plate is arranged on the vane, the flow reducing plate is of a tabulate structure, the flow reducing plate stretches inwards to the middle section of the vane from the edge of the impeller, the contact point of the flow reducing plate and the edge of the impeller is a critical point, and an included angle between the radial direction of the impeller and the flow reducing plate at the critical point equals an outlet mounting angle of the impeller. Compared with the prior art, the centrifugal pump impeller has the following advantages: the centrifugal pump impeller capable of reducing flow rate comprises the front cover, the rear cover and the vane and is characterized in that flow reducing plate is arranged on the vane, the flow reducing plate is of a tabulate structure, the flow reducing plate stretches inwards to the middle section of the vane from the edge of the impeller, the contact point of the flow reducing plate and the edge of the impeller is a critical point, and the included angle between the radial direction of the impeller and the flow reducing plate at the critical point equals the outlet mounting angle of the impeller.
Description
Technical field
The present invention relates to equipment for liquid transportation technical field, in particular pump house energy saving retrofit technology field.
Background technology
Centrifugal pump is in actual production run, it may appear that actual demand and the unmatched situation of pump performance, pump specified
Flow, more than being actually needed, causes centrifugal pump to be unable to reach optimized running status when running, so will result in resource
Waste.
Existing blade cutting mode is and is both greater than actually needed for pump discharge and lift, generally uses following methods
Carry out reducing energy consumption:
1) frequency control, increases converter, improves pump performance by regulation rotating speed；
2) changing blade angle or inlet guide vane angle, the method is only suitable for axial-flow pump and diagonal pumps, is not suitable for being centrifuged
Pump；
3) blade cutting.According to cutting law, lift reduces, and flow also can reduce accordingly, therefore the method for cutting impeller is only
It is applicable to pump lift and situation that flow all reduces.Now it is basically unchanged for pump lift, and the situation that flow is bigger than normal, and the party
Rule is difficult to meet.
It is an object of the invention to provide a kind of New centrafugal pump impeller, it can be made to realize flow within the specific limits and adjust
Joint, and lift keeps constant, i.e. realizes the independent control of flow and lift.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of centrifugal pump impeller reducing flow.
The present invention is achieved by the following technical solutions: a kind of centrifugal pump impeller reducing flow, including protecgulum, bonnet
And blade, it is characterised in that: be provided with on described blade and subtract stream plate, described in subtract stream plate be plate-like structure, described in subtract stream plate by
The edge of impeller extends inwardly to the stage casing of blade, described in subtract the contact point of stream plate and vane edge for facing a little, face at impeller
Radial direction and the angle of angle that subtracts between stream plate equal to the angle of exit installation angle of impeller.
As further improvement of these options, described blade is arc.
As further improvement of these options, described in subtract the thickness of stream plate and the consistency of thickness of blade.
As further improvement of these options, described in subtract the length of stream plate and calculate according to following four formula:
α+2 (γ+β)=π formula four
Wherein, Q1It it is the target flow needing after expection adjusts to reach；Q is the original flow of centrifugal pump；A is to face a distance leaf
The distance of sheet end；B is to subtract stream plate length；R is blade radius；α be face a little with the central angle corresponding to blade end；β is leaf
The exit installation angle of wheel；γ be face a little and the line of blade end and subtract stream plate between angle.
The present invention have the advantage that compared to existing technology be basically unchanged for pump lift, situation that flow is bigger than normal, can
To realize the independent control of flow and lift within the specific limits；Being capable of specified bare flow to reduce, lift is basically unchanged；
The energy loss caused due to eddy current in turbine is also basically unchanged, so the efficiency decline caused with traditional blade cutting method
Problem make moderate progress.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is the schematic diagram subtracting the stream required each parameter of plate length conversion.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following enforcement
Example.
A kind of centrifugal pump impeller reducing flow, including protecgulum, bonnet and blade, it is characterised in that: set on described blade
Be equipped with and subtract stream plate, described in subtract stream plate be plate-like structure, described in subtract stream plate and extended inwardly to the stage casing of blade by the edge of impeller,
The described contact point of stream plate and vane edge that subtracts for facing a little, face at the radial direction of impeller and subtract the angle of the angle flowed between plate
Degree is equal to the angle of the exit installation angle of impeller.Every piece of blade adds one piece and subtracts stream plate so that vertical with axial plane crosses stream
Cross-sectional area reduces, and then reduces flow.And keep exit installation angle consistent with original impeller outlet established angle, and ensure to add
Plus-minus stream plate extends inwardly on blade from vane edge, is that the radius of impeller does not changes, it is possible to ensure centrifugal pump
Lift is basically unchanged.Thus achieve lift to be basically unchanged, and the target of flow-reduction.
Described blade is arc, described in subtract the consistency of thickness of thickness and blade of stream plate.
The described length subtracting stream plate calculates according to following four formula:
α+2 (γ+β)=π formula four
Wherein, Q1It it is the target flow needing after expection adjusts to reach；Q is the original flow of centrifugal pump；A is to face a distance leaf
The distance of sheet end；B is to subtract stream plate length；R is blade radius；α be face a little with the central angle corresponding to blade end；β is leaf
The exit installation angle of wheel；γ be face a little and the line of blade end and subtract stream plate between angle.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (4)
1. reduce a centrifugal pump impeller for flow, including protecgulum, bonnet and blade, it is characterised in that: arrange on described blade
Have and subtract stream plate, described in subtract stream plate be plate-like structure, described in subtract stream plate and extended inwardly to the stage casing of blade, institute by the edge of impeller
State and subtract the contact point of stream plate and vane edge for facing a little, face at the radial direction of impeller and subtract the angle of the angle flowed between plate
Angle equal to the exit installation angle of impeller.
A kind of centrifugal pump impeller reducing flow the most as claimed in claim 1, it is characterised in that: described blade is arc.
A kind of centrifugal pump impeller reducing flow the most as claimed in claim 1, it is characterised in that subtract thickness and the leaf of stream plate described in:
The consistency of thickness of sheet.
A kind of centrifugal pump impeller reducing flow the most as claimed in claim 1, it is characterised in that subtract described in: stream plate length according to
Following four formula calculates:
α+2 (γ+β)=π formula four
Wherein, Q1It it is the target flow needing after expection adjusts to reach；Q is the original flow of centrifugal pump；A is to face a distance blade end
The distance of end；B is to subtract stream plate length；R is blade radius；α be face a little with the central angle corresponding to blade end；β is impeller
Exit installation angle；γ be face a little and the line of blade end and subtract stream plate between angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610511661.XA CN106015084B (en) | 2016-06-30 | 2016-06-30 | A kind of centrifugal pump impeller for reducing flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610511661.XA CN106015084B (en) | 2016-06-30 | 2016-06-30 | A kind of centrifugal pump impeller for reducing flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106015084A true CN106015084A (en) | 2016-10-12 |
| CN106015084B CN106015084B (en) | 2018-03-27 |
Family
ID=57106016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610511661.XA Active CN106015084B (en) | 2016-06-30 | 2016-06-30 | A kind of centrifugal pump impeller for reducing flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106015084B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100887A (en) * | 2017-06-30 | 2017-08-29 | 马鞍山方圆动力科技有限公司 | A kind of novel impeller |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4708585A (en) * | 1985-03-15 | 1987-11-24 | Nihon Radiator Co., Ltd. | Centrifugal pump |
| CN2091374U (en) * | 1991-07-15 | 1991-12-25 | 陆伟刚 | Small outlet angle centrifugal pump impeller |
| US6220819B1 (en) * | 2000-01-12 | 2001-04-24 | Industrial Technology Research Institute | Centrifugal pump impeller |
| CN2809287Y (en) * | 2005-07-22 | 2006-08-23 | 浙江工业大学 | Centrifugal pump impeller with radial blades |
| CN102062118A (en) * | 2011-01-07 | 2011-05-18 | 江苏大学 | Design method for centrifugal pump impeller with high specific revolution number |
| CN205714932U (en) * | 2016-06-30 | 2016-11-23 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of centrifugal pump impeller reducing flow |
-
2016
- 2016-06-30 CN CN201610511661.XA patent/CN106015084B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4708585A (en) * | 1985-03-15 | 1987-11-24 | Nihon Radiator Co., Ltd. | Centrifugal pump |
| CN2091374U (en) * | 1991-07-15 | 1991-12-25 | 陆伟刚 | Small outlet angle centrifugal pump impeller |
| US6220819B1 (en) * | 2000-01-12 | 2001-04-24 | Industrial Technology Research Institute | Centrifugal pump impeller |
| CN2809287Y (en) * | 2005-07-22 | 2006-08-23 | 浙江工业大学 | Centrifugal pump impeller with radial blades |
| CN102062118A (en) * | 2011-01-07 | 2011-05-18 | 江苏大学 | Design method for centrifugal pump impeller with high specific revolution number |
| CN205714932U (en) * | 2016-06-30 | 2016-11-23 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of centrifugal pump impeller reducing flow |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100887A (en) * | 2017-06-30 | 2017-08-29 | 马鞍山方圆动力科技有限公司 | A kind of novel impeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106015084B (en) | 2018-03-27 |
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