CN202883240U - Offset perpendicular axis wind turbine with vertical blade axis - Google Patents
Offset perpendicular axis wind turbine with vertical blade axis Download PDFInfo
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- CN202883240U CN202883240U CN 201220603295 CN201220603295U CN202883240U CN 202883240 U CN202883240 U CN 202883240U CN 201220603295 CN201220603295 CN 201220603295 CN 201220603295 U CN201220603295 U CN 201220603295U CN 202883240 U CN202883240 U CN 202883240U
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- sharf
- blade
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- support
- axis
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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
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Abstract
The utility model discloses an offset perpendicular axis wind turbine with an vertical blade axis. The wind turbine comprises a tower and a wine wheel; the wind wheel comprises a main axis, a light blade, blade axis brackets and a blade axis; the main axis is vertically arranged on the tower and capable of freely rotating; the blade axis brackets are uniformly fixed on the main axis in a radiation shape; two ends of each pair of blade axis bracket are respectively and vertically provided with a blade axis, and the light blade is fixedly mounted on the blade axis so that the light blade can revolve relative to the blade axis bracket, the revolving angle is 0-90 DEG. The wind turbine provided by the utility model is high in wind wheel solidity; the choke area of the light blade is increased, the wind wheel solidity is improved, the wind power utilization coefficient is great, and rotation torque is increased, and the generating capability is strong. The wind wheel starting velocity is small, the breeze generating capability is strong, and the starting wind velocity is small; under the condition of ignoring the generator resistance and friction force, the starting wind velocity is less than 1m/s. The wind turbine provided by the utility model is suitable for wide areas and high in running time scale.
Description
Technical field
The utility model relates to a kind of offset distance formula vertical axis windmill, relates in particular to the vertical offset distance formula vertical axis windmill of a kind of sharf.
Background technique
Nowadays, the non-renewable energy resources such as oil, coal, rock gas all are faced with the severe contamination of reserves exhaustion, rise in price even earth environment etc.The nuclear fission generating is dangerous high, nuclear waste befouling environment, difficult treatment; Utilize the nuclear fusion energy generating now also infeasible.And solar energy and wind energy are renewable energy sourcess, and environment is not polluted.Therefore, the clean reproducible energy of each national capital Devoting Major Efforts To Developing take wind energy and solar energy as representative.
In current field of wind energy utilization, the wind-driven generator of existing most of large electric motor powers mostly be in treat, outage state, the blower fan utilization ratio is extremely low.Under some specific condition, in addition in order to make at any time standby of blower fan generating, also must be to blower fan input control power supply, this makes blower fan the negative power output state occur, has greatly reduced wind energy utilization.Be subject to the impact of wind turbines rotor structure, the following problem that existing wind-driven generator mainly exists: 1. it is all too high to start wind speed and rated wind speed, and situation seriously loses contact with reality.Need development be fit to the wind energy conversion systems that use in most of areas, its startup wind speed and rated wind speed are all very low; 2. the blade of existing wind wheel is carefully grown, and solidity is extremely low, and major part leaks from the space between the blade, and wind energy is not fully utilized; 3. the fan blade Airfoil Design is unreasonable.Current the most widely used wind wheel blade is according to the design of the rotor structure of helicopter.The structural design of the rotor of helicopter is in order to utilize air-flow to improve its lift, but wind wheel blade need to overcome the effect of this power, is opposite process.4. most wind wheel blade torsion angles are fixed, and can not adapt to different wind speed.But in actual applications, the wind speed size is at random.Therefore wind wheel is generally operational in non-design work state, and overall efficiency is low, difficulty in starting.
Existing offset distance formula blade vertical shaft wind-driven generator, blade profile is long-pending to be increased, and has improved the wind energy power of catching, and reduces and starts wind speed.Adjust the blade lean angle and can regulate the blower fan rotational speed.The long-pending increase of blade profile can significantly reduce the length of blade, so that the wind wheel blade gross weight significantly reduces, and can utilize substantially wind energy power.Floor space is few, and the omnirange acting starts fast.
Existing offset distance formula blade vertical shaft wind-driven generator has three kinds of schemes.1. at vertical shaft blade rack is installed, blade is installed in the blade rack two ends with the offset distance form, and blade is by Electric Machine Control.In the time of with the wind, control makes the vertical wind-engaging of blade, wind energy is converted into the rotating mechanical energy of impeller.And when contrary wind, control makes blade be horizontal position, and wind is not produced any resistance.2. at vertical shaft blade rack is installed, blade is installed in the blade rack two ends with the offset distance form.90 degree one direction limit stoper are installed, so that blade one direction offset distance is no more than 90 degree on the blade rack.When any direction be the wind comes from, on one side blade keeps original position owing to the one direction position-limiting action, the another side blade is identical with wind direction to be rotated.3. at vertical shaft blade rack is installed, blade is installed blade at the blade rack two ends with 90 degree angles with the offset distance form.At blade rack the limit stoper that the full swing angle is 45 degree is installed.Any direction the wind comes from make blade rack one end blade oscillating to horizontal position; To vertical position, wind acts on the blade of vertical position and makes the rotation of blade impeller the blade of the blade rack the other end at wind-force effect lower swing; When the blade oscillating of vertical position arrived downwind position, a blade of another blade rack to vertical position, continued the impeller rotation at wind-force effect lower swing.
But the leaf position adjustment in the first scheme needs the motor driving rotation, need to expend electric power; Blade in the first scheme when rotating speed because centrifugal and can not reliable reset.More than three kinds of schemes, although solidity is more many greatly than conventional wind wheel, blade profile is long-pending large, its solidity can further improve.Therefore, be necessary that development and Design goes out more rational wind energy conversion system.
The model utility content
The startup wind speed that has blower fan now is high, rotor solidity is low in order to overcome, power coefficient is little, wind wheel fan blade aerofoil profile and torsion angle are fixing and can not adapt to different wind speed, drive that the rotation needs expend electric power, leaf position adjustment needs expend the rotation of electric drive motor, can not reliable reset etc. shortcoming, the utility model provides a kind of sharf vertical offset distance formula vertical axis windmill, further improves solidity.
In order to solve the problems of the technologies described above, the utility model has adopted following technological scheme:
The offset distance formula vertical axis windmill that sharf is vertical comprises pylon and wind wheel, and described wind wheel comprises main shaft, lightweight blade, sharf support and sharf; Described main shaft vertically is installed in the top of pylon and can rotates freely;
How right described sharf support be, and evenly be fixed in radially on the main shaft in mutual intersection the on the horizontal plane, and sharf is vertically installed respectively at the two ends of every pair of sharf support, and described sharf and sharf support are rotatably assorted;
Described lightweight blade is fixedly mounted on the sharf, and the lightweight blade is 0 ~ 90 ° with respect to the angle of revolution α of sharf support.
As a kind of preferred version of the present utility model, every pair of sharf support includes sharf and supports upper boom and sharf support lower beam, described sharf supports upper boom and sharf, and to support lower beam all vertical with main shaft and be fixed on the main shaft sharf support upper boom of every pair of sharf support and sharf support lower beam in the vertical direction correspondence; The two ends that sharf supports upper boom and corresponding sharf support between the two ends of lower beam respectively vertical installation sharf.
As another kind of preferred version of the present utility model, described lightweight blade is the steel wire canvas that stretches tight.
Compared with prior art, the vertical offset distance formula vertical axis windmill of sharf of the present utility model has the following advantages:
1, rotor solidity is high: increased lightweight blade choke area, improved rotor solidity, power coefficient is large, has increased rotating torques, and generating capacity is strong.
2. the wind wheel starting wind velocity is little: the breeze wind ability is strong, and starting wind velocity is little; Ignore in the situation of generator resistance and frictional force, start wind speed and be lower than 1m/s, it is wide to be fit to the area, and working time, ratio was high.
Description of drawings
Fig. 1 is the perspective view of the vertical offset distance formula vertical axis windmill of sharf;
Fig. 2 is the plan structure schematic representation of the vertical offset distance formula vertical axis windmill of sharf.
In the accompanying drawing: 1-lightweight blade; 2-main shaft; 3-sharf support; 31-sharf supports upper boom; 32-sharf supports lower beam; 4-sharf.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, 2, the offset distance formula vertical axis windmill that sharf is vertical comprises pylon and wind wheel.Wind wheel comprises main shaft 2, lightweight blade 1, sharf support 3 and sharf 4.Pylon vertically fixes on the ground, is used for supporting wind wheel.The main shaft 2 of wind wheel vertically is installed on the pylon, can rotate freely.
Wherein, how right sharf support 3 be, is generally two or three pairs, and evenly be fixed in radially on the main shaft 2 in mutual intersection the on the horizontal plane, and sharf 4 is vertically installed respectively at the two ends of every pair of sharf support 3, and sharf 4 and sharf support 3 are rotatably assorted.In the present embodiment, sharf support 3 is three pairs, every pair of sharf support 3 includes sharf and supports upper boom 31 and sharf support lower beam 32, sharf supports upper boom 31 and sharf, and to support lower beam 32 all vertical with main shaft 2 and be fixed on the main shaft 2 sharf of every pair of sharf support 3 support upper boom 31 and sharf support lower beam 32 in the vertical directions correspondence.The two ends that sharf supports upper boom 31 and corresponding sharf support between the two ends of lower beam 32 respectively vertical installation sharf 4, the sharf of a corresponding side supports upper boom 31, sharf supports lower beam 32 and sharf 4 consists of a doorframe structure, and the lightweight blade forms a rotating door.
During near the position of lightweight blade 1 O1 and O6, angle is 0 °, forms the counterclockwise torque to main shaft 2 under Action of Wind pressure with the wind.And when lightweight blade 1 rotates to the O2 position, under blast, launch rapidly, be turned back to 90 ° of angular orientations and begin against the wind rotation, because the offset distance of lightweight blade 1, under the contrary wind Action of Wind pressure, also form the counterclockwise torque to main shaft 2, until lightweight blade 1 with the wind comes from forward to the wind non-resistance.When lightweight blade 1 rotates to the O5 position, repeat again to recover the choke effect, thereby drive main shaft 2 rotations.In the time of against the wind, this wind energy conversion system can also produce and the with the wind torque of equidirectional not only without opposing torque.Solidity is 0.4 ~ 0.75, and is larger than the maximum value about 0.4 of existing offset distance formula vertical axis windmill.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. the vertical offset distance formula vertical axis windmill of sharf comprises pylon and wind wheel, it is characterized in that: described wind wheel comprises main shaft (2), lightweight blade (1), sharf support (3) and sharf (4); Described main shaft (2) vertically is installed in the top of pylon and can rotates freely;
How right described sharf support (3) be, and evenly be fixed in radially on the main shaft (2) in mutual intersection the on the horizontal plane, sharf (4) is vertically installed respectively at the two ends of every pair of sharf support (3), and described sharf (4) is rotatably assorted with sharf support (3);
Described lightweight blade (1) is fixedly mounted on the sharf (4), and lightweight blade (1) is 0 ~ 90 ° with respect to the angle of revolution α of sharf support (3).
2. the vertical offset distance formula vertical axis windmill of sharf according to claim 1, it is characterized in that: every pair of sharf support (3) includes sharf and supports upper boom (31) and sharf support lower beam (32), described sharf supports upper boom (31) and sharf, and to support lower beam (32) all vertical with main shaft (2) and be fixed on the main shaft (2) sharf of every pair of sharf support (3) support upper boom (31) and sharf support lower beam (32) in the vertical direction correspondence; The two ends that sharf supports upper boom (31) and corresponding sharf support between the two ends of lower beam (32) respectively vertical installation sharf (4).
3. the vertical offset distance formula vertical axis windmill of sharf according to claim 1 and 2 is characterized in that: described lightweight blade (1) is the steel wire canvas that stretches tight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603295 CN202883240U (en) | 2012-11-15 | 2012-11-15 | Offset perpendicular axis wind turbine with vertical blade axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603295 CN202883240U (en) | 2012-11-15 | 2012-11-15 | Offset perpendicular axis wind turbine with vertical blade axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883240U true CN202883240U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603295 Expired - Fee Related CN202883240U (en) | 2012-11-15 | 2012-11-15 | Offset perpendicular axis wind turbine with vertical blade axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883240U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926926A (en) * | 2012-11-15 | 2013-02-13 | 重庆理工大学 | Setover-type vertical-shaft wind machine capable of limiting rotating of blades |
-
2012
- 2012-11-15 CN CN 201220603295 patent/CN202883240U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926926A (en) * | 2012-11-15 | 2013-02-13 | 重庆理工大学 | Setover-type vertical-shaft wind machine capable of limiting rotating of blades |
| CN102926926B (en) * | 2012-11-15 | 2015-12-09 | 重庆理工大学 | The offset distance formula vertical axis windmill of blade rotary limited |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151115 |
|
| EXPY | Termination of patent right or utility model |