CN106438455A - Low-cavitation-coefficient axial-flow vane pump with auxiliary wings - Google Patents
Low-cavitation-coefficient axial-flow vane pump with auxiliary wings Download PDFInfo
- Publication number
- CN106438455A CN106438455A CN201611019717.6A CN201611019717A CN106438455A CN 106438455 A CN106438455 A CN 106438455A CN 201611019717 A CN201611019717 A CN 201611019717A CN 106438455 A CN106438455 A CN 106438455A
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- China
- Prior art keywords
- cavitation
- aileron
- coefficient
- axial
- blade
- 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.)
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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
- F04D29/181—Axial flow rotors
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a low-cavitation-coefficient axial-flow vane pump with auxiliary wings. The auxiliary wings in a certain area are identical in wing type and fixedly welded to negative-pressure surfaces of water pump blades to equalize flow velocity of the negative-pressure surfaces of the blades. By a small narrow passage formed by partition plates between each blade and the corresponding auxiliary wing, a high-pressure water flow can be led from an operating surface of the corresponding blade into a negative-pressure surface control boundary layer to delay flow separation under an off-design condition of a large attack angle. By reasonable matching of cascade parameters of the auxiliary wings and the blades, flow rate, lift and efficiency of the axial-flow vane pump with the auxiliary wings can be kept identical to those of axial-flow vane pump without the auxiliary wings while the cavitation coefficient can be decreased by 15% or above, and accordingly cavitation characteristics of the axial-flow vane pump are greatly improved.
Description
Technical field
The present invention relates to a kind of pump is and in particular to a kind of axial--flow blading pump.
Background technology
Vane pump is widely used in the fields such as field irrigation, drought resisting water drainage, Improvement of Ecological Environment and water diversion project, existing
Low lift axial--flow blading pump, declines more, especially cavitation performance deviateing optimal operating condition point behind efficiency and cavitation performance
Deteriorate and lead to use, maintenance cost to increase and the lost of life.For avoiding blade suction surface minimum pressure to cause cavitation, typically
Reduce the Installation Elevation of water pump, increasing the construction investment of pumping plant, but be still unable to the cavitation generation in effective control vane nose portion.
Content of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of low latitude with aileron that can improve cavitation performance
Change coefficient axial--flow blading pump.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron, including the blade of the axial--flow blading pump of different specific speed
1 and be fixed on blade 1 and aerofoil profile identical aileron 3 by two pieces of dividing plates 2, blade 1 is by being pivotally mounted on wheel hub 4.
Further, described aileron 3 passes through dividing plate 2 two ends of two pieces of levelling row downstream by the suction surface of aileron 3 and blade 1
It is welded and fixed.
Further, described blade 1 is alignd by streamline in water inlet end with aileron 3, and the shape of aileron 3 becomes fan-shaped.
Further, described dividing plate 2 head-tail becomes fin-shaped, and thickness is 10mm～30mm；The distance between two dividing plates 2 are
The 2%～8% of water pump vane diameter, preferably 2%～3%.
Further, aileron 3 and the lap δ of blade 1 are blade chord L235%～45%.
Further, blade 1 and aileron 3 chord length line angle α are between 0 °～4 °.
Further, dividing plate 2 height γ is the 5%～15% of impeller diameter.
A kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron providing with respect to prior art, the present invention, by pair
The flow velocity of blade suction surface is equalized by the wing, and the crawlway simultaneously being formed by the space bar of aileron and blade can be from blade
Working face is drawn one High-Pressure Water and is entered the suction surface attached aspect of control, delays the product of the separation of flow under off-design behaviour high attack angle
Raw.According to numerical analysis and model test result, the cascade parameter of Proper Match blade and aileron, it is capable of the axle of retainer belt aileron
Streaming blade pump discharge, lift and efficiency are identical with the axial--flow blading pump of no aileron, but cavitation coefficient, cavitation factor, Toma coefficient can substantially reduce
More than 15%, substantially improve the Cavitation Characteristics of axial--flow blading pump.The present invention is applied to low lift vertical shaft streaming water pump,
Go for the Tubular Pump of different structure type.
Brief description
By reference to the explanation below in conjunction with accompanying drawing, and it is more fully understood from to the present invention, other of the present invention
Purpose and result will be more apparent and should be readily appreciated that.In the accompanying drawings：
Fig. 1 is a kind of structural representation of the low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron of the present invention；
Fig. 2 is the partial schematic diagram of Fig. 1；
Fig. 3 is embodiment and comparative example cavitation coefficient, cavitation factor, Toma coefficient and flow rate test result schematic diagram；
Fig. 4 is embodiment and comparative example lift and efficiency test result schematic diagram.
Reference therein includes：1- blade；2- dividing plate；3- aileron；4- wheel hub.
Specific embodiment
For describing the structure of the present invention in detail, below with reference to accompanying drawing, the specific embodiment of the present invention is retouched in detail
State.
As shown in accompanying drawing 1～2, a kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron, including the leaf of axial flow pump
Piece 1, the dividing plate 2 of fixing aileron, aileron 3 and wheel hub 4, described aileron 3 is welded and fixed by two pieces of dividing plates 2 with blade 1, then will
Blade 1, dividing plate 2 and aileron 3 being pivotally mounted on wheel hub 4 by blade 1 being integrally formed.The working method of primary blades 1 is with often
Rule axial--flow blading pump is identical, can be full regulation, partly adjust or do not adjust.
The key realizing cavitation number reduction is the cascade parameter of Proper Match blade and aileron, including the weight of blade and aileron
Folded amount δ, blade and aileron chord line angle α and divider height γ.
Hereinafter just it is described in detail in conjunction with specific embodiments.
Embodiment 1
A kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron, its specific speed is 1250, water pump diameter 300mm, blade 1
Chord L2=200mm, pitch t2=200mm, the length of aileron 3 is the half of primary blades, i.e. 100mm, and primary blades leaf grating is dense
DegreeTheory is streamed according to tandem cascade, takes δ=75mm, α=0 °, the height γ=20mm of dividing plate 3 respectively.
Embodiment 2
A kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron, its specific speed is 1250, water pump diameter 300mm, blade 1
Chord L2=200mm, pitch t2=200mm, the length of aileron 3 is the half of primary blades, i.e. 100mm, and primary blades leaf grating is dense
DegreeTheory is streamed according to tandem cascade, takes δ=75mm, α=0 °, the height γ=30mm of dividing plate 3 respectively.
Comparative example 1
A kind of axial--flow blading pump, its specific speed is 1250, water pump diameter 300mm, chord L of blade 12=200mm, section
Away from t2=200mm, this axial--flow blading pump no aileron.
Embodiment 1～2 and comparative example are tested, test result as shown in figs. 34, in Fig. 3, α*Indicate no aileron when
The best efficiency point cavitation coefficient, cavitation factor, Toma coefficient of water pump, Q*The flow of the best efficiency point of water pump when indicating no aileron.In Fig. 4, H*Indicate no secondary
The lift of water pump optimum efficiency point, η during the wing*The efficiency of water pump optimum efficiency point when indicating no aileron.From the point of view of test result,
Under blade difference laying angle, embodiment 1～2 is respectively provided with less cavitation coefficient, cavitation factor, Toma coefficient, the efficiency of embodiment 2 and no aileron water pump vane
Keep equal, and cavitation coefficient, cavitation factor, Toma coefficient reduces by more than 15%.
Describe in an illustrative manner according to a kind of low cavitation coefficient, cavitation factor, Toma coefficient with aileron proposed by the present invention above with reference to accompanying drawing
Axial--flow blading pump.It will be understood by those skilled in the art, however, that for the invention described above proposed a kind of low with aileron
Cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump, can also make various improvement on the basis of without departing from present invention.Therefore, the present invention
Protection domain should by appending claims content determine.
Claims (8)
1. a kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron is it is characterised in that include the axial-flow type leaf of different specific speed
The blade (1) of piece pump and be fixed on by two pieces of dividing plates (2) that blade (1) is upper and aerofoil profile identical aileron (3), blade (1) leads to
Cross and be pivotally mounted on wheel hub (4).
2. a kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron according to claim 1 is it is characterised in that described pair
The suction surface of aileron (3) and blade (1) is welded and fixed by the wing (3) by dividing plate (2) two ends of two pieces of levelling row downstream.
3. a kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron according to claim 1 is it is characterised in that described leaf
Piece (1) is alignd by streamline in water inlet end with aileron (3), and the shape of aileron (3) becomes fan-shaped.
4. a kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron according to claim 1 it is characterised in that described every
Plate (2) head-tail becomes fin-shaped, and thickness is 10mm～30mm；The distance between two dividing plates (2) be water pump vane diameter 2%～
8%.
5. a kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron according to claim 1 is it is characterised in that aileron
(3) it is blade chord L with the lap δ of blade (1)235%～45%.
6. a kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron according to claim 1 is it is characterised in that blade
And aileron (3) chord length line angle α is between 0 °～4 ° (1).
7. a kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron according to claim 1 is it is characterised in that dividing plate
(2) height γ is the 5%～15% of impeller diameter.
8. a kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron according to claim 4 it is characterised in that two every
The distance between plate (2) is the 2%～3% of water pump vane diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611019717.6A CN106438455B (en) | 2016-11-18 | 2016-11-18 | A kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611019717.6A CN106438455B (en) | 2016-11-18 | 2016-11-18 | A kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron |
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| Publication Number | Publication Date |
|---|---|
| CN106438455A true CN106438455A (en) | 2017-02-22 |
| CN106438455B CN106438455B (en) | 2019-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611019717.6A Active CN106438455B (en) | 2016-11-18 | 2016-11-18 | A kind of low cavitation coefficient, cavitation factor, Toma coefficient axial--flow blading pump with aileron |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329940A (en) * | 2017-07-19 | 2017-11-07 | 中国电建集团成都勘测设计研究院有限公司 | Vertical shaft Francis turbine plant cavitation coefficient computational methods |
| CN111115752A (en) * | 2019-12-06 | 2020-05-08 | 江苏大学 | Mixed flow type rotational flow cavitation generator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562433A (en) * | 2010-11-16 | 2012-07-11 | 通用电气公司 | Rotor blade assembly having an auxiliary blade |
| JP2013213500A (en) * | 2012-04-03 | 2013-10-17 | Siemens Ag | Flatback slat for wind turbine |
| CN103362754A (en) * | 2012-04-03 | 2013-10-23 | 西门子公司 | Slat with tip vortex modification appendage for wind turbine |
| US20150098820A1 (en) * | 2013-10-09 | 2015-04-09 | Siemens Aktiengesellchaft | Method and apparatus for reduction of fatigue and gust loads on wind turbine blades |
| CN105805043A (en) * | 2016-04-07 | 2016-07-27 | 西安理工大学 | Design method for nonadjustable axial flow pump impeller with characteristic of long blades and short blades |
| CN206175297U (en) * | 2016-11-18 | 2017-05-17 | 江苏省水利勘测设计研究院有限公司 | Take low cavitation coefficient axial - -flow blading pump of aileron |
-
2016
- 2016-11-18 CN CN201611019717.6A patent/CN106438455B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562433A (en) * | 2010-11-16 | 2012-07-11 | 通用电气公司 | Rotor blade assembly having an auxiliary blade |
| JP2013213500A (en) * | 2012-04-03 | 2013-10-17 | Siemens Ag | Flatback slat for wind turbine |
| CN103362754A (en) * | 2012-04-03 | 2013-10-23 | 西门子公司 | Slat with tip vortex modification appendage for wind turbine |
| US20150098820A1 (en) * | 2013-10-09 | 2015-04-09 | Siemens Aktiengesellchaft | Method and apparatus for reduction of fatigue and gust loads on wind turbine blades |
| CN105805043A (en) * | 2016-04-07 | 2016-07-27 | 西安理工大学 | Design method for nonadjustable axial flow pump impeller with characteristic of long blades and short blades |
| CN206175297U (en) * | 2016-11-18 | 2017-05-17 | 江苏省水利勘测设计研究院有限公司 | Take low cavitation coefficient axial - -flow blading pump of aileron |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329940A (en) * | 2017-07-19 | 2017-11-07 | 中国电建集团成都勘测设计研究院有限公司 | Vertical shaft Francis turbine plant cavitation coefficient computational methods |
| CN107329940B (en) * | 2017-07-19 | 2020-12-29 | 中国电建集团成都勘测设计研究院有限公司 | Method for calculating cavitation coefficient of vertical shaft mixed-flow water turbine power station |
| CN111115752A (en) * | 2019-12-06 | 2020-05-08 | 江苏大学 | Mixed flow type rotational flow cavitation generator |
| CN111115752B (en) * | 2019-12-06 | 2022-07-05 | 江苏泰丰泵业有限公司 | Mixed flow type rotational flow cavitation generator |
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| Publication number | Publication date |
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| CN106438455B (en) | 2019-03-15 |
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