CN110345000B - Double-impeller contra-rotating horizontal shaft wind turbine - Google Patents
Double-impeller contra-rotating horizontal shaft wind turbine Download PDFInfo
- Publication number
- CN110345000B CN110345000B CN201910571725.9A CN201910571725A CN110345000B CN 110345000 B CN110345000 B CN 110345000B CN 201910571725 A CN201910571725 A CN 201910571725A CN 110345000 B CN110345000 B CN 110345000B
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- impeller
- generator
- rotating shaft
- supporting seat
- rotate
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- 238000009434 installation Methods 0.000 claims description 8
- 230000002337 anti-port Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor having a plurality of rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/103—Purpose of the control system to affect the output of the engine
- F05B2270/1033—Power (if explicitly mentioned)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/304—Spool rotational speed
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The application provides a bilobed wheel is to contrarotating horizontal axis wind energy conversion system, including leading impeller, rearmounted impeller, cabin, generator install bin, support bearing, generator and conducting ring, leading impeller drives generator shaft forward rotation, and rearmounted impeller drives generator housing counter-rotation to increase the relative speed between generator stator and the rotor and improve the generating power. The application provides a pair of impeller contra-rotating horizontal axis wind turbine utilizes the remaining air kinetic energy of horizontal axis wind turbine afterbody to drive generator casing antiport, has increased generator output, has improved wind energy utilization efficiency.
Description
Technical Field
The invention relates to the field of wind power generation, and provides a horizontal shaft wind turbine which is provided with two impellers, wherein the two impellers rotate in opposite directions, and can drive a stator and a rotor of a generator to rotate in opposite directions.
Background
The horizontal axis wind turbine mostly adopts a single impeller structure, and wind still has certain kinetic energy at a certain speed when flowing through the impeller and reaching the tail part of the wind turbine, so that wind energy is not fully utilized. In the existing double-impeller horizontal shaft wind turbines, a group of impellers and generators are added at the tail of the wind turbine to absorb residual wind energy, so that the structure is complex, and the cost is increased greatly.
Disclosure of Invention
The present invention aims to solve the above technical problem at least to some extent. Therefore, the invention provides a double-impeller contra-rotating horizontal shaft wind turbine, which is based on a common horizontal shaft wind turbine and is additionally provided with a rear impeller with low wind speed and wide blades at the tail part. The rear impeller and the front impeller rotate in opposite directions and drive the generator shell to rotate together, so that the relative rotating speed between the stator and the rotor of the generator is increased, and the generating power is improved. When the front impeller reaches the maximum power rotating speed of the generator, the rear impeller rotating shaft is locked by the locking device to be not rotated, so that the reduction of the output power caused by the overlarge relative rotating speed of the stator and the rotor of the generator is prevented.
The technical scheme adopted by the invention for solving the technical problems is as follows: the generator comprises a front impeller, a generator mounting box, a generator, a rear impeller, a support bearing, a cabin and a conducting ring; the shell of the generator is arranged on the inner wall of the generator mounting box; the front impeller is connected with a generator rotating shaft through a front impeller hub and a front impeller rotating shaft to drive a generator rotor to rotate; the rear impeller is fixedly connected with the shell of the generator mounting box through a rear impeller hub and a rear impeller rotating shaft, and the rear impeller and the generator mounting box synchronously rotate to drive a generator stator to rotate; the generator installation box is arranged on a support bearing fixed in the engine room and can rotate in the support bearing; the conducting ring is fixed in the engine room and sleeved on the rear impeller rotating shaft, and the conducting ring does not rotate along with the rear impeller rotating shaft; the rear end of the generator extends out of the output lead and is connected with the conducting ring through the electric brush, and the generator outputs electric energy outwards through the output lead, the electric brush and the conducting ring.
Further, the blade type of the rear impeller is a low wind speed wide blade, and the inclined direction of the blades relative to the hub shafting of the rear impeller enables the rear impeller to rotate in the opposite direction to the front impeller under the pushing of wind power.
Furthermore, the front impeller rotating shaft is arranged on the front supporting seat and can rotate relative to the front supporting seat; a rotating speed sensor is arranged in the front supporting seat and can detect the rotating speed of the rotating shaft of the front impeller; the rear impeller rotating shaft is arranged on the rear supporting seat and can rotate relative to the rear supporting seat; a locking device is arranged in the rear supporting seat; when the rotation speed sensor detects that the front impeller rotating shaft reaches the maximum power rotation speed of the generator, the locking device locks the rear impeller rotating shaft to not rotate.
The invention has the beneficial effects that: the rear impeller of the invention absorbs the residual wind energy at the tail of the wind turbine to rotate, thus improving the utilization efficiency of the wind energy; the stator of the generator rotates reversely relative to the rotor through the rear impeller, so that the output power of the generator is increased; the locking device locks the rear impeller rotating shaft when the front impeller reaches the maximum power rotating speed of the generator, and the generator is ensured to output at the maximum power.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic external view of the present invention;
fig. 2 is a schematic view of the internal structure of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 2, the dual-impeller counter-rotating horizontal shaft wind turbine of the present invention includes a front impeller 1, a front impeller hub 2, a front impeller rotating shaft 3, a generator installation box 4, a generator 5, a rear impeller rotating shaft 6, a rear impeller hub 7, a rear impeller 8, a rotation speed sensor 9, a front support base 10, a support bearing 11, a nacelle 12, a rear support base 13, a locking device 14, an output wire 15, an electric brush 16 and a conducting ring 17.
The shell of the generator 5 is arranged on the inner wall of the generator installation box 4; the rear impeller 8 is fixedly connected with the shell of the generator installation box 4 through a rear impeller hub 7 and a rear impeller rotating shaft 6, and the rear impeller 8 and the generator installation box 4 synchronously rotate; the generator installation box 4 is installed on a support bearing 11 fixed in a cabin 12 and can rotate in the support bearing 11; the conducting ring 17 is fixed in the engine room 12 and sleeved on the rear impeller rotating shaft 6, and the conducting ring 17 does not rotate along with the rear impeller rotating shaft 6; the rear impeller rotating shaft 6 is of a hollow structure; in order to prevent the shell of the generator 5 from rotating and twisting off the output wire, the rear end of the generator 5 extends out of the output wire 15, penetrates through the middle of the rear impeller rotating shaft 6 and penetrates out of a small hole on one side of the rear impeller rotating shaft 6, and is connected with the conducting ring 17 through the brush 16.
The blade type of the rear impeller 8 is low wind speed wide blade, a 3-blade structure is adopted, and the blade is inclined relative to the shaft system of the hub 7 of the rear impeller so that the rear impeller 8 is opposite to the rotation direction of the front impeller 1 under the pushing of wind power. When the front part of the wind turbine is seen backwards, the front impeller 1 rotates clockwise, and the rear impeller 8 rotates anticlockwise.
The front impeller rotating shaft 3 is arranged on the front supporting seat 10 and can rotate relative to the front supporting seat 10; a rotating speed sensor 9 is arranged in the front supporting seat 10 and can detect the rotating speed of the front impeller rotating shaft 3; the rear impeller rotating shaft 6 is arranged on the rear supporting seat 13 and can rotate relative to the rear supporting seat 13; a locking device 14 is arranged in the rear supporting seat 13; when the rotation speed sensor 9 detects that the front impeller rotating shaft 3 reaches the maximum power rotation speed of the generator 5, the locking device 14 locks the rear impeller rotating shaft 6 to be not rotated, and the generator 5 is ensured to output with the maximum power at the corresponding wind speed.
The working principle of the device is as follows:
when wind flows through the front impeller 1, the front impeller 1 is driven to rotate clockwise, and the front impeller 1 drives a rotating shaft (rotor) of a generator 5 to rotate through a front impeller hub 2 and a front impeller rotating shaft 3. After the wind energy is partially absorbed by the front impeller 1, the wind speed is reduced, and the wind passes through the rear impeller 8 at a lower speed. The wind acts on the blades of the rear impeller 8 to generate a circumferential acting force, and drives the rear impeller 8 to rotate anticlockwise. The rear impeller 8 drives the generator mounting box 4 to rotate through a rear impeller hub 7 and a rear impeller rotating shaft 6. The housing of the generator 5 is fixedly mounted on the inner wall of the generator mounting case 4, so that the housing of the generator 5 rotates together with the generator mounting case 4. The stator of the generator 5 is fixedly connected with the housing thereof, so that when the front impeller 1 and the rear impeller 8 rotate oppositely, the stator and the rotor of the generator 5 obtain a relative rotation speed which is larger than that of the rotor which rotates alone, thereby improving the output power of the generator 5 under the condition of constant exciting current.
The shell of the generator 5 can drive the output lead 15 to rotate together when rotating, and in order to prevent the output lead 15 from being twisted off, the invention adopts a special power transmission mode: the rear impeller rotating shaft 6 adopts a hollow structure, an output lead 15 extending out of the rear end of the generator 5 penetrates through the hollow part of the rear impeller rotating shaft 6 and penetrates out of a small hole on one side of the rear impeller rotating shaft 6 to be connected with an electric brush 16, the electric brush 16 is connected with a conducting ring 17 through the electric brush 16, the electric brush 16 is fixed on the rear impeller rotating shaft 6 and keeps insulation with the rear impeller rotating shaft, the conducting ring 17 is fixed in the engine room 12 and does not rotate, and electric energy is output outwards through the conducting ring 17.
When the wind speed is high, the front impeller 1 may be equal to or even exceed the maximum power rotational speed of the generator 5. When the rotation speed sensor 9 detects that the front impeller rotating shaft 3 reaches the maximum power rotation speed of the generator 5, the locking device 14 locks the rear impeller rotating shaft 6 to be not rotated, and the generator 5 is ensured to output with the maximum power at the corresponding wind speed.
In this embodiment, the rotation speed sensor 9 is installed in the front support base 10, the locking device 14 is installed in the rear support base 13, and the output lead 15 passes through the hollow portion of the rear impeller rotating shaft 6 and passes through the small hole on one side of the rear impeller rotating shaft 6 to be connected with the brush 16. Other mounting and connecting means may be used for these parts, depending on the actual layout of the interior of the wind turbine.
The above embodiments are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the technical solutions of the present invention.
Claims (2)
1. A double-impeller contra-rotating horizontal shaft wind turbine is characterized in that: the device comprises a front impeller (1), a front impeller rotating shaft (3), a generator mounting box (4), a generator (5), a rear impeller rotating shaft (6), a rear impeller (8), a rotating speed sensor (9), a front supporting seat (10), a supporting bearing (11), a cabin (12), a rear supporting seat (13), a locking device (14) and a conducting ring (17); the shell of the generator (5) is arranged on the inner wall of the generator installation box (4); the rear impeller (8) is fixedly connected with the shell of the generator mounting box (4) through a rear impeller hub (7) and a rear impeller rotating shaft (6), and the rear impeller (8) and the generator mounting box (4) synchronously rotate; the generator installation box (4) is arranged on a support bearing (11) fixed in the engine room (12) and can rotate in the support bearing (11); the conducting ring (17) is fixed in the engine room (12) and sleeved on the rear impeller rotating shaft (6), and the conducting ring (17) does not rotate along with the rear impeller rotating shaft (6); the rear end of the generator (5) extends out of an output lead (15) and is connected with a conducting ring (17) through an electric brush (16); the front impeller rotating shaft (3) is arranged on the front supporting seat (10) and can rotate relative to the front supporting seat (10), and a rotating speed sensor (9) is arranged in the front supporting seat (10) and can detect the rotating speed of the front impeller rotating shaft (3); the rear impeller rotating shaft (6) is arranged on the rear supporting seat (13) and can rotate relative to the rear supporting seat (13), a locking device (14) is arranged in the rear supporting seat (13), and when the rotating speed sensor (9) detects that the front impeller rotating shaft (3) reaches the maximum power rotating speed of the generator (5), the locking device (14) locks the rear impeller rotating shaft (6) to be not rotated, so that the maximum power output of the generator (5) at the corresponding wind speed is ensured.
2. The dual-impeller contra-rotating horizontal-axis wind turbine as claimed in claim 1, wherein: the blade type of the rear impeller (8) is low wind speed wide blade, and the inclination direction of the blade relative to the shaft system of the hub (7) of the rear impeller enables the rear impeller (8) to rotate in the opposite direction to the rotation direction of the front impeller (1) under the pushing of wind power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910571725.9A CN110345000B (en) | 2019-06-28 | 2019-06-28 | Double-impeller contra-rotating horizontal shaft wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910571725.9A CN110345000B (en) | 2019-06-28 | 2019-06-28 | Double-impeller contra-rotating horizontal shaft wind turbine |
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| Publication Number | Publication Date |
|---|---|
| CN110345000A CN110345000A (en) | 2019-10-18 |
| CN110345000B true CN110345000B (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910571725.9A Active CN110345000B (en) | 2019-06-28 | 2019-06-28 | Double-impeller contra-rotating horizontal shaft wind turbine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283016B (en) * | 2020-09-16 | 2022-06-24 | 江西大唐国际新能源有限公司 | Wind power generation device |
| CN112696314A (en) * | 2020-12-29 | 2021-04-23 | 诸暨和创电机科技有限公司 | Wind driven generator based on wind power braking mechanism |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2797673Y (en) * | 2004-04-21 | 2006-07-19 | 贾雄雄 | Wind power generator with two wind wheel machine |
| CN201187416Y (en) * | 2008-05-07 | 2009-01-28 | 张俊杰 | High-efficiency wind power generator |
| FR2975446B1 (en) * | 2011-05-16 | 2016-06-24 | Bernard Perriere | OPTIMIZED YIELD TURBINE |
| CN203035450U (en) * | 2013-01-07 | 2013-07-03 | 徐剑雄 | Wind driven generator |
| US9422918B2 (en) * | 2013-12-27 | 2016-08-23 | Google Inc. | Methods and systems for managing power generation and temperature control of an aerial vehicle operating in crosswind-flight mode |
| CN203962289U (en) * | 2014-03-13 | 2014-11-26 | 赵东平 | A kind of horizontal axis wind-driven generator of novel bilobed wheel |
| CN109611268B (en) * | 2018-11-01 | 2020-11-06 | 协鑫能源科技有限公司 | Design optimization method for double-impeller horizontal shaft wind turbine |
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| Publication number | Publication date |
|---|---|
| CN110345000A (en) | 2019-10-18 |
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