CN108730227A - A kind of ultralow lifting pump blade and reversible axial flow pump - Google Patents
A kind of ultralow lifting pump blade and reversible axial flow pump Download PDFInfo
- Publication number
- CN108730227A CN108730227A CN201810499951.6A CN201810499951A CN108730227A CN 108730227 A CN108730227 A CN 108730227A CN 201810499951 A CN201810499951 A CN 201810499951A CN 108730227 A CN108730227 A CN 108730227A
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- Prior art keywords
- molded line
- blade
- water inlet
- curves
- pump
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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
- F04D29/181—Axial flow rotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of ultralow lifting pump blade and reversible axial flow pumps, and blade is three-dimensional twisted reverse symmetry structure, and thick middle both sides are thin；The spatial character of three-dimensional twisted curved surface is indicated using radially evenly spaced four sections；Four sections are respectively adopted tetra- molded line of F1, F2, F3 and F4 and indicate that molded line is formed by the end to end curve combination of upper and lower ends.The blade efficient stable can be run under forward and reverse operating mode.
Description
Technical field
This application involves a kind of ultralow lifting pump blade and reversible axial flow pumps, belong to Fluid Machinery and Engineering equipment neck
Domain.
Background technology
Water pump is a kind of machinery that purposes is extremely wide, can be used for conveying various fluids.Water pump mainly passes through increase
Hydraulic pressure, to the purpose by the energy transmission water supply of motor, finally realized water lift, transport water.The effect of water pump is exactly power
The energy transmission water supply of machine, to achieve the purpose that water lift and increase hydraulic pressure.Water pump body part is impeller and diffuser.Impeller
Component the most key in water pump is deserved to be called, it decides the performance of the pump housing.Fluid passes through the high speed rotation of impeller, completes machine
Tool can transmit the process of water supply.
Many low lift and large flow rate pumping plants need two-way pumping function, take into account positive diversion and reverse drainage, and use double
To the axial-flow pump of runner forward and reverse draw water can be very easily realized by changing runner direction of rotation.Axial-flow pump is by rotation
The active force that the blade of impeller generates liquid makes the pump that liquid conveys in the axial direction.Efficiency and the stability of operation are axis
Two key property indexs for flowing pump, under ultralow lift, the efficiency more difficult promotion of reversible axial flow pump, therefore to stability
It is required that higher.So how in the case where ensureing axial-flow pump safe and stable operation, it is improved as far as possible in forward and reverse operating mode
Under efficiency, at problem urgently to be resolved hurrily in current fluid machinery technical field.
A kind of structure technologies of axial-flow pump of the prior art such as Chinese patent CN2580158Y, the axis that two-way can especially draw water
Flow the blade of pump.In fan-shaped blade body, symmetrical S types centered on blade body section, the middle part of blade is thick, both side edges
It is thin.Inlet and outlet channel is simple, and pumping plant construction investment is saved；Operational management facilitates, and runner reversion can be realized and reversely draw water；It is special
The two-way pumping plant being drawn Shi He not be needed with riverine lakeside area.But it when water pump flat water starts the problem is that can not ensure
The efficiency and stability of its work, therefore pump housing vibration is larger when unlatching, noise is higher.
For another example Chinese patent CN104533828B provides a kind of Hydraulic Design Method of Double-way axial flow impeller of pump.Pass through
Change the several important design parameter cascade solidities of vortex pump impeller, inlet blade angle, the determination method of profile thickness and uses
" S " type aerofoil profile efficiency, lift when improving axial-flow pump reverse operation and is taken into account so as to improve Internal Flow in Axial Pump situation
Performance requirement when forward and reverse operation.But itself the problem is that, which only provides a kind of design method of bidirectional blade,
The situation that head is relatively low and stability is poor is susceptible to when being combined with specific runner.
The application technical problems to be solved are the efficiency taken into account when two-way pump is run under ultralow lift even zero lift
And stability, make it can efficient stable operation under forward and reverse operating mode.
Invention content
The application provides a kind of ultralow lifting pump blade and reversible axial flow pump, can under forward and reverse operating mode efficient stable
Operation.
To realize the above-mentioned technical purpose, the technical solution that the application takes is a kind of ultralow lifting pump blade, and blade is
Three-dimensional twisted reverse symmetry structure, and thick middle both sides are thin；The spatial character of three-dimensional twisted curved surface is using radially
Evenly spaced four sections indicate；Four sections are respectively adopted tetra- molded line of F1, F2, F3 and F4 and indicate that molded line is by upper and lower
The end to end curve combination in both ends forms；Using the central point of each molded line coordinate system is established as origin；
Wherein, F1 molded line：
F1-F1 upper curves：
y1=1E-06x1 3+0.0004x1 2-0.3678x1+28.741
F1-F1 lower curves：
y1=-7E-08x1 3+0.0008x1 2-0.2522x1-24.95；
Wherein, x1 is the abscissa of F1 molded line；Y1 is the ordinate of F1 molded line；
F2 molded line：
F2-F2 upper curves：
y2=5E-07x2 3+0.0003x2 2-0.1959x2+21.408
F2-F2 lower curves：
y2=5E-08x2 3+0.0006x2 2-0.1235x2-23.629
Wherein, x2 is the abscissa of F2 molded line；Y2 is the ordinate of F2 molded line；
F3 molded line：
F3-F3 upper curves：
y3=3E-07x3 3+0.0003x3 2-0.0696x3+12.429
F3-F3 lower curves：
y3=1E-07x3 3+0.0004x3 2-0.0282x3-22.934
Wherein, x3 is the abscissa of F3 molded line；Y3 is the ordinate of F3 molded line；
F4 molded line：
F4-F4 upper curves：
y4=2E-07x4 3+0.0003x4 2+0.0218x4+1.7473
F4-F4 lower curves：
y4=1E-07x4 3+0.0004x4 2+0.0427x4-22.523
Wherein, x4 is the abscissa of F4 molded line；Y4 is the ordinate of F4 molded line.
The another object of the application is to provide a kind of reversible axial flow pump, including be sequentially communicated water inlet flow channel, S types bend with
Outlet passage；Wherein, the axis of the axis of water inlet flow channel and outlet passage is in different height；S type bends are located at water inlet flow channel
Duan Yici is equipped with runner envelope and guide vane room；Impeller hub is equipped in runner envelope, impeller is set to water inlet flow channel water outlet, and can distinguish
Carry out clockwise rotation and anticlockwise rotation；Several above-described blades are installed on wheel hub.
As the improved technical solution of the application, blade has four, and the setting angle of blade is 31 °.
Further include guide vane as the improved technical solution of the application, guide vane is placed in water inlet flow channel, and is located at feed water flow
Road and S type bends junction.
As the improved technical solution of the application, the number of guide vane is 5, and the initial laying angle of guide vane is 102 °.
Advantageous effect
The application designs the blade of reverse symmetry, can Effec-tive Function under forward and reverse operating mode；Reversible axial flow pump is equipped with
The blade and mating guide vane, can the stable operation under ultralow lift or even zero lift, and unit vibration and noise are smaller.Blade
Specific implementation has the technical effect that vane efficiency is higher under forward and reverse operating mode, is remained under ultralow lift or even zero lift
Ensure that vibration is smaller.
This application involves having the technical effect that of generating of reversible axial flow pump, water pump can realize that stabilization is high under forward and reverse operating mode
Effect operation, and when zero lift flat water starts, vibration is smaller, and noise is relatively low.
Description of the drawings
Fig. 1 is a kind of ultralow lifting pump blade front view of the application；
Fig. 2 is a kind of ultralow lifting pump blade left view of the application；
Fig. 3 is a kind of four sectional views of ultralow lifting pump blade of the application；
Fig. 4 is a kind of section F1 molded lines of ultralow lifting pump blade of the application；
Fig. 5 is a kind of section F2 molded lines of ultralow lifting pump blade of the application；
Fig. 6 is a kind of section F3 molded lines of ultralow lifting pump blade of the application；
Fig. 7 is a kind of section F4 molded lines of ultralow lifting pump blade of the application；
Fig. 8 is reversible axial flow pump front view provided by the present application；
Fig. 9 is reversible axial flow pump vertical view provided by the present application；
Figure 10 is the impeller vane enlarged drawing of the application；
Figure 11 is the structure top view for the impeller that the application proposes.
Wherein：1, water inlet flow channel；2, S types bend pipe；3, outlet passage；4, gate；5, wheel hub；6, impeller；7, guide vane；8, turn
Engineer room；9, guide vane room；10, main shaft；11, motor.
Specific implementation mode：
It is clearer for the purpose and technical solution that make the embodiment of the present application, below in conjunction with the attached of the embodiment of the present application
Figure, is clearly and completely described the technical solution of the embodiment of the present application.Obviously, described embodiment is the application
A part of the embodiment, instead of all the embodiments.Based on described embodiments herein, those of ordinary skill in the art
The every other embodiment obtained under the premise of without creative work, shall fall in the protection scope of this application.
Embodiment 1
As shown in Figs. 1-3, a kind of ultralow lifting pump blade, blade are three-dimensional twisted reverse symmetry structure, and in
Between thick both sides it is thin；Also the shape that blade can be expressed as is the thin bi-directional symmetrical aerofoil profile in thick middle both sides；The sky of three-dimensional twisted curved surface
Between characteristic indicated using radially evenly spaced four sections；Tetra- types of F1, F2, F3 and F4 are respectively adopted in four sections
Line indicates that molded line is formed by the end to end curve combination of upper and lower ends；Using the central point of each molded line coordinate is established as origin
System；
Wherein, F1 molded line：
F1-F1 upper curves：
y1=1E-06x1 3+0.0004x1 2-0.3678x1+28.741
F1-F1 lower curves：
y1=-7E-08x1 3+0.0008x1 2-0.2522x1-24.95；
Wherein, x1 is the abscissa of F1 molded line；Y1 is the ordinate of F1 molded line；
F2 molded line：
F2-F2 upper curves：
y2=5E-07x2 3+0.0003x2 2-0.1959x2+21.408
F2-F2 lower curves：
y2=5E-08x2 3+0.0006x2 2-0.1235x2-23.629
Wherein, x2 is the abscissa of F2 molded line；Y2 is the ordinate of F2 molded line；
F3 molded line：
F3-F3 upper curves：
y3=3E-07x3 3+0.0003x3 2-0.0696x3+12.429
F3-F3 lower curves：
y3=1E-07x3 3+0.0004x3 2-0.0282x3-22.934
Wherein, x3 is the abscissa of F3 molded line；Y3 is the ordinate of F3 molded line；
F4 molded line：
F4-F4 upper curves：
y4=2E-07x4 3+0.0003x4 2+0.0218x4+1.7473
F4-F4 lower curves：
y4=1E-07x4 3+0.0004x4 2+0.0427x4-22.523
Wherein, x4 is the abscissa of F4 molded line；Y4 is the ordinate of F4 molded line.
When practical application, as shown in figs. 4-7, the blade part branch is as shown in table 1 below in the position of rectangular coordinate system system：
The coordinate of partial dot in table tetra- molded line of 1 F1, F2, F3 and F4
Reaching the standard grade for n-th molded line is indicated on wherein Fn, is indicated under Fn offline (n=1,2,3,4) of n-th of molded line；Fn is upper _
Xn indicates the Xn coordinate values of molded line Fn upper curves, Fn is upper _ the Yn coordinate values (n=1,2,3,4) of Yn expression molded line Fn upper curves；Fn
Under _ Xn indicates the Xn coordinate values of molded line Fn lower curves, under Fn _ Yn indicate molded line Fn lower curves yn coordinate values (n=1,2,3,
4)。
The blade of bidirectionally symmetric structure is more in the prior art, and the application blade has the advantage that as this blade is suitble to surpass
The Effec-tive Function of two-way pump under low lift, and when flat water starts, vibration is smaller, and stability is preferable.
Embodiment 2
As Figure 8-9, a kind of reversible axial flow pump, including the water inlet flow channel 1, S types bend and the outlet passage that are sequentially communicated
3；Wherein, the axis of water inlet flow channel 1 and the axis of outlet passage 3 are in different height；Practical used time, the water inlet of water inlet flow channel 1
End is additionally provided with gate 4；S type bends are located at 1 section of water inlet flow channel and are equipped with runner envelope 8 and guide vane room 9 successively；Leaf is equipped in runner envelope 8
Take turns 6 wheel hubs 5, impeller 6 is set to 1 water outlet of water inlet flow channel, and can carry out respectively clockwise rotation with it is anticlockwise
Rotation；Impeller 6 includes wheel hub 5, water guide cone, this is the prior art；As shown in Figure 10, several turns are uniformly installed on wheel hub 5
Impeller blade；As shown in figure 11, blade has four, and the setting angle of blade is 31 °.
Inlet channel is concrete material；Water outlet is concrete material.
Further include guide vane 7, guide vane 7 is placed in water inlet flow channel 1, and positioned at water inlet flow channel 1 and S type bends junction.
As the improved technical solution of the application, the number of guide vane 7 is 5, and the initial laying angle of guide vane 7 is 102 °.
Specifically, being arranged motor 11 in axial-flow pump close to the outside of outlet passage 3, pass through the main shaft 10 across runner
It is sequentially connected with impeller 6.Under positive working condition, 11 impeller 6 of motor rotates clockwise, 6 blade of impeller submerged in water production
Raw push effect, liquid is inhaled into and pressure is raised to certain altitude, and the liquid of extrusion is after 7 release rate circular rector of guide vane, into S
Type bend pipe 2 then flows into outlet passage 3；Under reverse condition, flow enters from outlet passage 3,6 inverse time of 11 impeller of motor
Needle rotates, and 6 blade of impeller submerged in water generates push effect, and liquid is inhaled into and pressure is raised to certain altitude and enters feed water flow
Road 1.
The application is verified through numerical simulation and model test, achieves satisfied application effect.
It these are only presently filed embodiment, the description thereof is more specific and detailed, but can not therefore be interpreted as pair
The limitation of the application the scope of the claims.It should be pointed out that for those of ordinary skill in the art, not departing from the application
Under the premise of design, various modifications and improvements can be made, these belong to the protection domain of the application.
Claims (5)
1. a kind of ultralow lifting pump blade, which is characterized in that blade is three-dimensional twisted reverse symmetry structure, and thick middle
Both sides are thin；The spatial character of three-dimensional twisted curved surface is indicated using radially evenly spaced four sections；Four sections point
Not Cai Yong tetra- molded line of F1, F2, F3 and F4 indicate that molded line is formed by the end to end curve combination of upper and lower ends；With various
The central point of line is that origin establishes coordinate system；
Wherein, F1 molded line：
F1-F1 upper curves：
y1=1E-06x1 3+0.0004x1 2-0.3678x1+28.741
F1-F1 lower curves：
y1=-7E-08x1 3+0.0008x1 2-0.2522x1-24.95；
Wherein, x1 is the abscissa of F1 molded line；Y1 is the ordinate of F1 molded line；
F2 molded line：
F2-F2 upper curves：
y2=5E-07x2 3+0.0003x2 2-0.1959x2+21.408
F2-F2 lower curves：
y2=5E-08x2 3+0.0006x2 2-0.1235x2-23.629
Wherein, x2 is the abscissa of F2 molded line；Y2 is the ordinate of F2 molded line；
F3 molded line：
F3-F3 upper curves：
y3=3E-07x3 3+0.0003x3 2-0.0696x3+12.429
F3-F3 lower curves：
y3=1E-07x3 3+0.0004x3 2-0.0282x3-22.934
Wherein, x3 is the abscissa of F3 molded line；Y3 is the ordinate of F3 molded line；
F4 molded line：
F4-F4 upper curves：
y4=2E-07x4 3+0.0003x4 2+0.0218x4+1.7473
F4-F4 lower curves：
y4=1E-07x4 3+0.0004x4 2+0.0427x4-22.523
Wherein, x4 is the abscissa of F4 molded line；Y4 is the ordinate of F4 molded line.
2. a kind of reversible axial flow pump, which is characterized in that including the water inlet flow channel, S types bend and outlet passage being sequentially communicated；Its
In, the axis of water inlet flow channel and the axis of outlet passage are in different height；S type bends be located at water inlet flow channel section successively be equipped with turn
Engineer room and guide vane room；Impeller hub is equipped in runner envelope, impeller is set to water inlet flow channel water outlet, and can carry out side clockwise respectively
To rotation and anticlockwise rotation；Several blades as described in claim 1 are installed on wheel hub.
3. reversible axial flow pump according to claim 2, which is characterized in that blade has four, and the setting angle of blade is
31°。
4. reversible axial flow pump according to claim 2, which is characterized in that further include guide vane, guide vane is placed in water inlet flow channel
In, and positioned at water inlet flow channel and S type bends junction.
5. wanting the reversible axial flow pump described in 4 according to right, which is characterized in that the number of guide vane is 5, the initial laying angle of guide vane
It is 102 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499951.6A CN108730227A (en) | 2018-05-23 | 2018-05-23 | A kind of ultralow lifting pump blade and reversible axial flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499951.6A CN108730227A (en) | 2018-05-23 | 2018-05-23 | A kind of ultralow lifting pump blade and reversible axial flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108730227A true CN108730227A (en) | 2018-11-02 |
Family
ID=63936223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810499951.6A Pending CN108730227A (en) | 2018-05-23 | 2018-05-23 | A kind of ultralow lifting pump blade and reversible axial flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108730227A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115859497A (en) * | 2022-11-15 | 2023-03-28 | 扬州大学 | Method for cooperatively generating integral molded line of large vertical axial flow pump device |
| CN117249032A (en) * | 2023-11-17 | 2023-12-19 | 哈尔滨大电机研究所有限公司 | Mixed-flow pump water turbine waveform movable guide vane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2580158Y (en) * | 2002-11-26 | 2003-10-15 | 刘超 | Two-way axial flow pump vane |
| CN103206331A (en) * | 2013-02-07 | 2013-07-17 | 河海大学 | Low-head efficient shaft-extension tubular pump turbine and blades thereof |
| US20170001710A1 (en) * | 2015-07-03 | 2017-01-05 | Airbus Helicopters Deutschland GmbH | Airfoils for rotor blades of rotary wing aircrafts |
| CN107503978A (en) * | 2017-09-19 | 2017-12-22 | 河海大学 | A kind of high-lift higher specific speed mixed-flow pump |
-
2018
- 2018-05-23 CN CN201810499951.6A patent/CN108730227A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2580158Y (en) * | 2002-11-26 | 2003-10-15 | 刘超 | Two-way axial flow pump vane |
| CN103206331A (en) * | 2013-02-07 | 2013-07-17 | 河海大学 | Low-head efficient shaft-extension tubular pump turbine and blades thereof |
| US20170001710A1 (en) * | 2015-07-03 | 2017-01-05 | Airbus Helicopters Deutschland GmbH | Airfoils for rotor blades of rotary wing aircrafts |
| CN107503978A (en) * | 2017-09-19 | 2017-12-22 | 河海大学 | A kind of high-lift higher specific speed mixed-flow pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115859497A (en) * | 2022-11-15 | 2023-03-28 | 扬州大学 | Method for cooperatively generating integral molded line of large vertical axial flow pump device |
| CN115859497B (en) * | 2022-11-15 | 2024-03-15 | 扬州大学 | Integral molded line collaborative generation method for large vertical axial flow pump device |
| CN117249032A (en) * | 2023-11-17 | 2023-12-19 | 哈尔滨大电机研究所有限公司 | Mixed-flow pump water turbine waveform movable guide vane |
| CN117249032B (en) * | 2023-11-17 | 2024-03-15 | 哈尔滨大电机研究所有限公司 | Mixed-flow pump water turbine waveform movable guide vane |
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Application publication date: 20181102 |