CN102943732B - Hybrid lift type impeller - Google Patents
Hybrid lift type impeller Download PDFInfo
- Publication number
- CN102943732B CN102943732B CN201210494245.5A CN201210494245A CN102943732B CN 102943732 B CN102943732 B CN 102943732B CN 201210494245 A CN201210494245 A CN 201210494245A CN 102943732 B CN102943732 B CN 102943732B
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- China
- Prior art keywords
- lift
- blade
- lift type
- flow
- type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Hydraulic Turbines (AREA)
- Wind Motors (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a hybrid lift type impeller. The hybrid lift type impeller comprises a rotating shaft, two or more than two lift type vanes, an electric generator and a casing, the lift type vanes are arranged on the rotating shaft, the electric generator is connected with the rotating shaft, the casing is provided with a fluid inlet and a fluid outlet, a tapered flow guide cover is disposed in the middle in the casing, the electric generator is mounted in the tapered flow guide cover, the lift type vanes are located in the fluid outlet, an annular channel is formed between the tapered flow guide cover and the casing, a flow gathering chamber is formed between the lift type vanes and the casing, the annular channel is communicated with the flow gathering chamber, grids are annularly distributed at an outlet of the flow gathering chamber, and the grids are parallel to the lift type vanes. By means of the hybrid lift type impeller, water flow changes from transverse flowing to longitudinal flowing under the combined action of an inlet flow channel, the flow guide cover, the annular flow channel, the flow gathering chamber and the grids sequentially, the water flow flows into a vane working area along the normal direction of the vane rotating circle, so that the lift type vanes can obtain an optimal fluid dynamic field, and the working capacity of the vanes is improved.
Description
Technical field
The present invention relates to a kind of novel wind energy conversion system and energy by ocean current water turbine.
Background technique
At present, most of water turbine utilizes high head pressure to do work, and this water turbine is when high water level drop, and efficiency is higher.But even one slightly above the river course of head, if the water turbine that utilizes traditional depended on pressure to do work carrys out conversion of energy, efficiency is lower, economical poor for low water head.
In energy by ocean current utilization, also have the water turbine of horizontal axis and the water turbine of vertical shaft lift type, these water turbine cut both ways, for horizontal axis water turbine, horizontal axis water wheels wheel adopts lift-type blade, and rotating speed is very fast, and capacity usage ratio is higher, technology comparative maturity, thereby be widely used.Although horizontal-shaft wind turbine efficiency is higher, but it mainly does work, region concentrates on the part near blade tip, and very weak near the blade-section acting ability of root of blade, negative consequence has been played to the overall acting ability of wind wheel in the weak position of these acting abilities.
But lifting upright shaft impeller blade is arranged on the end of support arm, therefore even very little power all has the very large arm of force.Although and there is not the adaptive problem of direction in traditional lifting upright shaft water turbine.But there is its in the feature that twice, its blade is inhaled merit, the scarce capacity that does work for the first time, the ability of doing work for the second time again extremely a little less than, and then the weak problem of whole acting ability.
For this reason, if can invent the impeller of a kind of level and vertical shaft mixing, have the efficient energy rate transformation efficiency of horizontal axis impeller simultaneously, also have the feature that this rotatory force of conventional wind wheel has the larger arm of force simultaneously, impeller will have higher energy conversion efficiency like this.Here be necessary that for above problem, having proposed a kind of level and hybrid-type lift-type blade of vertical shaft of utilizing forms, the new type hydraulic turbine that mainly utilizes the high flow rate of current to do work.
Summary of the invention
Technical problem to be solved by this invention is for improving the efficiency of low water head river course or energy by ocean current Conversion of Energy, and a kind of hybrid water turbine providing.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of hybrid lift-type impeller, comprise rotating shaft, be arranged on two or more lift-type blades in described rotating shaft, the generator being connected with described rotating shaft, also comprise a housing, this housing has fluid input and fluid output, in housing, be also provided with between two parties a conical flow guiding cover, described generator is arranged in described conical flow guiding cover, described lift-type blade is positioned at described fluid output, between described conical flow guiding cover and housing, form an annular pass, between lift-type blade and housing, form a flow-collecting chamber, described annular pass and flow-collecting chamber are communicated with, in the outlet of described flow-collecting chamber, be provided with the grid of annular spread, this grid is parallel with described lift-type blade.
Described grid is dull and stereotyped, and dull and stereotyped elongation line is through rotating shaft.
The one end being connected with fluid output at described lift-type blade is provided with annular end cap, at the other end of lift-type blade, is provided with circular end cap, and described fluid output is positioned at the inner circle of described annular end cap.
Described conical flow guiding cover base area is more than or equal to the cylindrical area of the grid that is circular layout.
The inlet area of fluid input is more than or equal to the product of lift-type blade rotary diameter and lift-type blade height.
The circular end cap in described impeller one end or annular end cap have blade adjusting device outward, can change the propeller pitch angle of impeller blade by sizing mixing.
Compared with prior art, the invention has the beneficial effects as follows:
1, the rotating shaft of this impeller is consistent with incoming flow wind direction, and wind sweeping area is subject to the restriction of air guide sleeve open circles, has the feature of horizontal axis impeller, and it is consistent with traditional horizontal axis impeller with function that it becomes oar method.But its lift-type blades installation has adopted vertical shaft type installation method, therefore comprehensive this impeller is the impeller that a kind of level is mixed mutually with vertical shaft.
2, this hybrid turbine is swept wind energies all in wind face by horizontal axis and is transformed by wind direction, all concentrates on the acting of arm of force end lift-type blade, makes whole exhibition to all having better acting ability, has overcome the weak shortcoming of horizontal axis impeller blade root end acting ability.
3, this impeller blade adopts blade ring to the design improvement of air intake, hoop air intake, and blade has the increasing angle of attack in circumferential any angle, good acting ability, overcome twice acting of traditional lifting upright shaft impeller, and the not enough shortcoming of doing work, has given full play to the stressed advantage that concentrates on end of lift vertical shaft impeller blade.
4, the change oar object of traditional prismatic blade feather upright wind wheel has increased the azimuthal acting ability of part, and novel impeller is because of hoop air intake, so all have all the time at axial each azimuthal blade the acting ability that tradition becomes the blade of oar vertical shaft impeller optimum azimuth.
5, the design of traditional prismatic blade feather upright wind wheel does not have better startup and power ratio control rotating speed, and the function of fluid dynamic brake.Yet, the feather wind wheel of novel impeller has been inherited the change oar method of horizontal axis impeller, utilize change oar to start preferably, efficiently move and carry out hydrokinetics brake, this has also overcome the startup difficulty of traditional upright wind wheel and efficiency is low and rotating speed is controlled difficult deficiency.
Accompanying drawing explanation
Fig. 1 is the generalized section of facing of the hybrid lift-type impeller of the present invention.
Fig. 2 is that stator and impeller are related to schematic diagram.
Fig. 3 is three kinds of change oar view of stator.
Wherein: 1, rotating shaft; 2, lift-type blade; 3, support arm; 4, conical flow guiding cover; 5, support; 6, generator; 7, grid; 8, circular end cap; 9, annular end cap; 10, entrance channel; 11, exhalant canal; 12, annular pass; 13, flow-collecting chamber; 14, blade rotary circle; 15, stator elongation line; 16, outage state; 17, rated condition; 18, speed change state.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.As shown in Figure 1, hybrid type impeller of the present invention, the main body of impeller has comprised rotating shaft 1, and more than 2 or 2 prismatic lift-type blades 2 is installed in rotating shaft 1; One end of described blade is connected with circular end cap 8, and the other end of blade is connected with annular end cap 9.The generator 6 that impeller drives is fixed on conical flow guiding cover 4 inside of sealing, and conical flow guiding cover 4 is fixed on the inside of entrance channel 10 by support 5, and described 4 whiles of conical flow guiding cover are the upstream in impeller also.The described impeller surrounding grid 7 that has been circular layout, the arranged downstream of impeller exhalant canal 11.
First fluid enters entrance channel 10, and under the impact of conical flow guiding cover 4, fluid enters entrance channel 10 by fluid input, through ring runner 12, finally enters flow-collecting chamber 13; Fluid continues to flow through grid 7 at flow-collecting chamber 13, enters blade 2 rotary areas, then passes through blade annular end cap 9, from the exhalant canal 11 being connected with fluid output, flows out.
Described lift-type blade pass is crossed an axle and is fixed on described circular end cap 8 and annular end cap 9, under the control of circular end cap 8, according to the angle of swing of each blade of operation conditions synchronization control.
Described lift-type blade, when shutting down, it is consistent with the elongation line of grid flat board (normal direction of rotational circle) that blade is adjusted to the string of a musical instrument of blade, is feather position; When starting, blade lean one angle, the direction rotation that blade tilts along round end; After blade starts, blade rotary is to the string of a musical instrument position vertical with the elongation line (normal direction of rotational circle) of grid; When needs slow down, blade is again to feather position direction rotation.
Novel impeller of the present invention, by prismatic lift-type blade 2, the conical flow guiding cover 4 sealing, grid 7, entrance channel 10, ring runner 12, flow-collecting chamber 13 etc., formed, wherein current are under the priority acting in conjunction through entrance channel 10, conical flow guiding cover 4, ring runner 12, flow-collecting chamber 13 and grid 7, from lateral flow, become longitudinal flow, current flow into blade acting region along the normal direction of blade rotary circle, make lift-type blade there is best fluid dynamic field, increased the acting ability of blade.Meanwhile, blade can be realized the shutdown that becomes oar starting, critical angle of attack high speed operation and feather position by becoming oar device for regulating direction, can control flexibly rotating speed.Impeller has efficient efficiency, is applicable in low-head hydraulic generating and marine tidal-current energy water turbine.
Claims (6)
1. a hybrid lift-type impeller, comprise rotating shaft (1), be arranged on two or more lift-type blades (2) in described rotating shaft (1), the generator (6) being connected with described rotating shaft (1), it is characterized in that: also comprise a housing, this housing has fluid input and fluid output, in housing, be also provided with between two parties a conical flow guiding cover (4), described generator (6) is arranged in described conical flow guiding cover (4), described lift-type blade (2) is positioned at described fluid output, between described conical flow guiding cover (4) and housing, form an annular pass (12), between lift-type blade (2) and housing, form a flow-collecting chamber (13), described annular pass (12) and flow-collecting chamber (13) are communicated with, in the outlet of described flow-collecting chamber (13), be provided with the grid (7) of annular spread, this grid (7) is parallel with described lift-type blade (2).
2. hybrid lift-type impeller according to claim 1, is characterized in that: described grid (7) is for dull and stereotyped, and dull and stereotyped elongation line is through rotating shaft (1).
3. hybrid lift-type impeller according to claim 1, it is characterized in that: the one end being connected with fluid output at described lift-type blade (2) is provided with annular end cap (9), the other end at lift-type blade (2) is provided with circular end cap (8), and described fluid output is positioned at the inner circle of described annular end cap (9).
4. hybrid lift-type impeller according to claim 1, is characterized in that: described conical flow guiding cover (4) base area is more than or equal to the cylindrical area of annular spread grid (7).
5. hybrid lift-type impeller according to claim 1, is characterized in that: the inlet area of fluid input is more than or equal to the product of lift-type blade rotary diameter and lift-type blade height.
6. hybrid lift-type impeller according to claim 3, is characterized in that: on described circular end cap (8) or annular end cap (9), be provided with a blade adjusting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210494245.5A CN102943732B (en) | 2012-11-28 | 2012-11-28 | Hybrid lift type impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210494245.5A CN102943732B (en) | 2012-11-28 | 2012-11-28 | Hybrid lift type impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102943732A CN102943732A (en) | 2013-02-27 |
| CN102943732B true CN102943732B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210494245.5A Expired - Fee Related CN102943732B (en) | 2012-11-28 | 2012-11-28 | Hybrid lift type impeller |
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| Country | Link |
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| CN (1) | CN102943732B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835867B (en) * | 2014-02-25 | 2016-01-20 | 河海大学 | A kind of countryside portable waterpower wind-force compensating generator |
| CN108019313B (en) * | 2016-11-01 | 2020-07-14 | 王连群 | Rotatable wind gathering and guiding type horizontal longitudinal axis wind driven generator |
| CN108843498A (en) * | 2018-06-06 | 2018-11-20 | 钟同伟 | Electric car travel increasing device and its power generator |
| CN111089031B (en) * | 2019-12-23 | 2021-02-12 | 国网河南省电力公司新野县供电公司 | Self-protection type wind power generation equipment |
| CN114893408B (en) * | 2022-04-02 | 2023-06-06 | 武汉理工大学 | Micro-head flow velocity type turbine pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3323200A1 (en) * | 1983-06-28 | 1985-01-17 | Gerk, Heinrich, 6457 Maintal | Windmill for recovering energy from air movements |
| CN201025238Y (en) * | 2007-04-29 | 2008-02-20 | 粟翊人 | Rotary wind force power generator |
| CN101319648A (en) * | 2008-07-04 | 2008-12-10 | 清华大学 | Flow guiding device of vertical axis tidal current generator |
| CN101586533A (en) * | 2009-06-26 | 2009-11-25 | 武汉益宇环保科技有限公司 | Volute vertical-axis wind turbine |
| CN102128140A (en) * | 2011-04-26 | 2011-07-20 | 梁道广 | Wind collecting double-click type wind wheel vertical shaft wind power generator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009203911A (en) * | 2008-02-28 | 2009-09-10 | Kubota Corp | Pump or water turbine |
-
2012
- 2012-11-28 CN CN201210494245.5A patent/CN102943732B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3323200A1 (en) * | 1983-06-28 | 1985-01-17 | Gerk, Heinrich, 6457 Maintal | Windmill for recovering energy from air movements |
| CN201025238Y (en) * | 2007-04-29 | 2008-02-20 | 粟翊人 | Rotary wind force power generator |
| CN101319648A (en) * | 2008-07-04 | 2008-12-10 | 清华大学 | Flow guiding device of vertical axis tidal current generator |
| CN101586533A (en) * | 2009-06-26 | 2009-11-25 | 武汉益宇环保科技有限公司 | Volute vertical-axis wind turbine |
| CN102128140A (en) * | 2011-04-26 | 2011-07-20 | 梁道广 | Wind collecting double-click type wind wheel vertical shaft wind power generator |
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| CN102943732A (en) | 2013-02-27 |
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Granted publication date: 20141210 Termination date: 20171128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |