CN109751203B - Novel wind driven generator blade with continuously variable area - Google Patents
Novel wind driven generator blade with continuously variable area Download PDFInfo
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- CN109751203B CN109751203B CN201711061528.XA CN201711061528A CN109751203B CN 109751203 B CN109751203 B CN 109751203B CN 201711061528 A CN201711061528 A CN 201711061528A CN 109751203 B CN109751203 B CN 109751203B
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- 238000010248 power generation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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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
Abstract
The invention discloses a novel wind driven generator blade with continuously variable area, which comprises a blade main body with a round angle and a rectangular transparent space, a slidable wind shielding plate, a sliding rail for connecting a sliding blade and a fixed blade, a power device, a wind speed sensor, a power device controller and a control system for analyzing wind speed and transmitting the wind speed to the controller. When the wind driven generator works, the wind speed sensor measures the wind speed in real time and transmits a wind speed signal to the control system. By means of the mode, the wind shielding plate can be controlled to slide by controlling the power device, the area of the through space of the blade body is changed, the windward area of the blade can meet the condition that the wind driven generator is in the rated output wind speed power range at the current wind speed, and the wind speed application range of the wind driven generator is greatly expanded.
Description
Technical Field
The invention relates to the technical field of wind power generation equipment, in particular to a novel wind driven generator blade capable of adjusting the area and further realizing area change.
Background
The wind power generation has no fuel problem, does not generate radiation or environmental pollution, and is a clean renewable energy utilization mode with great scale development potential. The design of the wind driven generator blade directly influences the conversion efficiency of wind energy, and further influences annual energy generation capacity, so that the wind driven generator blade is an important ring for wind energy utilization. The data of the China aerodynamic research and development center shows that the wind energy utilization rate of the existing small wind driven generator is only 23% -29%. In addition, typical generators may utilize wind speeds in the range of 3-25m/s.
The principle of the existing wind driven generator is that wind power is utilized to drive blades of the wind driven generator to rotate, and then the rotating speed is increased through a speed increaser to drive the generator to generate electricity. When the wind speed of the wind driven generator in the current market is smaller, the rotating speed of the blades is lower, and when the wind speed is gradually increased, the rotating speed of the blades is also increased, so that the output voltage is unstable. Meanwhile, when the wind speed is high, in order to prevent the power generation device from being burnt due to the fact that the rotating speed of the blades is too high, the wind power generator stops working, namely the cut-out wind speed is reached, the working wind speed range of the wind power generator is limited, and the power generation efficiency is reduced. The windward area of the equipment on the current market is changed, the windward area is not changed continuously, the windward area is changed discretely, the wind speed is changed continuously and cannot be matched in real time, and the output voltage is unstable.
Disclosure of Invention
The invention mainly solves the technical problem of providing a wind driven generator blade with continuously variable area, which can solve the problems that the cut-out wind speed of a wind driven generator is low and the output power is unstable in the working wind speed range.
In order to solve the technical problems, the invention adopts a technical scheme that:
the novel wind driven generator blade with the continuously variable area comprises a blade main body 1 with a round angle and a rectangular through space, a slidable wind shielding plate 2, a sliding rail 3 for connecting a sliding blade and a fixed blade, a power device 4, a wind speed sensor 5, a controller 6, a computer system 7 for carrying out wind speed analysis and transmitting the wind speed analysis to the controller, and the through space 8.
The blade body 1 is characterized in that a rectangular through space with a round angle is opened in the middle of a conventional blade, the width is 1/4 of the width of the blade at the position, the length is 1/6 of the total length of the blade, and the blade body 1 and the wind shielding plate 2 jointly form a novel wind motor blade with a complete area capable of continuously changing.
The wind shielding plate 2 is matched with the shape of the through space of the blade main body 1, and the wind shielding plate 2 can be attached to the inner surface of the skin of the blade main body as far as possible under the condition of ensuring no interference when sliding.
The sliding rail 3 can connect the wind shielding plate 2 with the blade main body 1, so that the wind shielding plate 2 can move on the sliding rail 3 through the power device 4 to open and shield the transparent space, thereby obtaining continuously variable windward area, and the wind shielding plate 2 can completely shield the transparent space to form a complete blade identical with a conventional blade, and can also be completely retracted into the hollow blade, so that the windward area of the blade is reduced to the minimum.
In the working process of the wind driven generator, when the wind speed is low (within the wind speed range of the original design), the wind shielding plate completely shields the through space, and the whole blade is an integral body, and has the same appearance as the blade of the conventional wind driven generator; if the wind speed is gradually increased and reaches the upper limit of the original design wind speed, the wind speed sensor transmits a wind speed signal to the power device in real time along with the further increase of the wind speed, so that the wind shielding plate is controlled to move on the sliding rail, and the displacement is continuously increased along with the increase of the wind speed, and the windward area of the blade is gradually reduced. When the wind speed increases to a certain value, the wind shielding plate is completely retracted into the hollow part of the blade main body, and the windward area of the blade is minimum at the moment, so that the power overload of the wind driven generator caused by high wind speed is counteracted; if the wind speed continues to increase, no matter where the wind shielding plate is located, the wind driven generator cannot be kept within the rated output power range, and at this time, the wind driven generator can only stop working.
The beneficial effects of the invention are as follows:
in the working process of the wind driven generator, the wind speed of the novel wind driven generator blade with the continuously variable area is within the range of the wind speed of the original design, the wind shielding plate completely shields the through space, the whole blade is an integral body, and the appearance of the novel wind driven generator blade is the same as that of the conventional wind driven generator blade; when the wind speed gradually increases and reaches the upper limit of the original design wind speed, the wind speed sensor transmits a wind speed signal to the power device in real time along with the further increase of the wind speed, so that the wind shielding plate is controlled to move on the sliding rail, the wind shielding plate is continuously retracted into the hollow part of the blade main body along with the increase of the wind speed, the windward area of the blade is gradually reduced, the power overload of the wind driven generator caused by high wind speed is counteracted, and when the wind speed increases to a certain value, the wind shielding plate is completely retracted into the hollow part of the blade main body, and the windward area of the blade is minimized. If the wind speed continues to increase, no matter where the wind shielding plate is located, the wind driven generator cannot be kept within the rated output power range, and at this time, the wind driven generator can only stop working.
Compared with the conventional blades and other blades with variable areas, the wind power generation device has the advantages that the upper limit of the available wind speed of the wind power generator can be enlarged, the continuous change of the area along with the wind speed can be realized, the problem that the wind speed cannot be matched in real time due to the continuous change of the windward area is solved, the output power of the wind power generation is more stable, the working process of the wind power generator is more flexible, and the adaptability of the wind power generator is enhanced.
Drawings
FIG. 1a is a front view of a new wind turbine blade with a continuously variable area in which the shield completely covers the open space;
FIG. 1b is a front view of a portion of a wind shield of a novel wind turbine blade of the present invention covering a through space with a continuously variable area;
FIG. 1c is a front view of a wind shield of a novel wind turbine blade of the present invention having a continuously variable area fully retracted into the interior of the blade body;
fig. 2 is a schematic diagram of a system for continuously changing windward area according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and detailed description so that advantages and features of the present invention can be more readily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
The invention relates to a novel wind power generation blade with continuously variable area, which comprises a blade main body 1 with a round angle and a rectangular through space, a slidable wind shielding plate 2, a sliding rail 3 for connecting a sliding blade and a fixed blade, a power device 4, a wind speed sensor 5, a controller 6, a control system 7 for carrying out wind speed analysis and transmitting the wind speed analysis to the controller, and a through space 8. When the wind driven generator works, the wind speed sensor measures the wind speed in real time and transmits a wind speed signal to the control system, and the power device controls the sliding of the wind shielding plate, so that the area of the through space of the blade main body is changed, the windward area of the blade is enabled to meet the condition that the wind driven generator is in the rated output wind speed power range at the current wind speed, and the application range of the wind speed of the wind driven generator is greatly expanded.
As a preferred embodiment of the present invention, as shown in fig. 1a, 1b, 1c and 2, the blade body is provided with a rectangular through space with rounded corners from the middle of a conventional blade, the rectangular through space is positioned in the middle of the blade, the width is about 1/4 of the width of the blade where the rectangular through space is positioned, the length is about 1/6 of the total length of the blade, and the blade body and the wind shielding plate together form a novel wind motor blade with a complete area capable of continuously changing. The air shielding plate is matched with the shape of the through space of the blade body, and the air shielding plate can be attached to the inner surface of the skin of the blade body as far as possible under the condition of ensuring no interference when sliding. The sliding rail can connect the wind shielding plate and the blade main body, so that the wind shielding plate can move on the sliding rail through the power device to shield through the transparent space, thereby obtaining continuously variable windward area, the wind shielding plate can completely shield the transparent space to form a complete blade identical to a conventional blade, and can also partially shield along with the change of wind speed, when the wind speed reaches a limit value, the wind shielding plate can be completely retracted into the hollow blade, and the windward area of the blade is reduced to the minimum.
As shown in fig. 2, the wind speed is measured by a sensor, and when the wind speed does not reach the cut-in wind speed when the wind shielding plate completely shields the through space, the wind driven generator does not work; when the wind shielding plate completely shields the transparent space, the working condition of the wind driven generator is the same as that of a conventional blade when the wind speed is between the cut-in wind speed and the cut-out wind speed under the condition; when the wind speed is greater than the cut-out wind speed under the conditions, a wind speed signal is transmitted to a control system through a wind speed sensor, the windward area corresponding to the rated power is calculated under the wind speed, the calculated result is transmitted to a controller, and a power device is controlled to perform displacement of the wind shielding plate on the sliding rail, so that the windward area is changed to adapt to the wind speed. The wind speed continues to increase, and the wind shielding plate continues to move towards the inside of the main body blades until the wind shielding plate is completely retracted into the inside of the main body blades; if the wind speed is increased again, the windward area cannot be reduced any more, the output power of the wind driven generator exceeds the maximum power which can be born by the wind driven generator, and the wind driven generator can only be stopped at the moment and cannot work continuously. In summary, compared with the conventional wind driven generator blade, the wind driven generator blade has the advantages that the wind speed application range of the wind driven generator can be enlarged, the continuous change of the area along with the wind speed can be realized, the problem that the continuous change of the wind speed cannot be matched in real time due to the discrete change of the windward area is solved, the wind power generation output power is always kept to be rated power, the working process of the wind driven generator is more stable and flexible, the adaptability of the wind driven generator is enhanced, and the power generation efficiency is improved.
Claims (2)
1. The utility model provides a but area continuous variation's novel aerogenerator blade which characterized in that: the novel wind driven generator blade with the continuously variable area comprises a blade main body (1) with a round angle and a rectangular through space, a slidable wind shielding plate (2), a sliding rail (3) for connecting the sliding wind shielding plate (2) and the blade main body (1), a power device (4), a wind speed sensor (5), a controller (6), a control system (7) for carrying out wind speed analysis and transmitting the wind speed analysis to the controller and the through space (8); the blade body is provided with a rectangular through space with round corners from the middle of a conventional blade, the rectangular through space is positioned in the middle of the blade, the width of the rectangular through space is 1/4 of the width of the blade at the position, the length of the rectangular through space is 1/6 of the total length of the blade, and the blade body and the wind shielding plate jointly form a novel wind driven generator blade with a complete area capable of continuously changing; the air shielding plate is matched with the transparent space shape of the blade main body, and can be attached to the inner surface of the skin of the blade main body as far as possible under the condition of ensuring no interference when sliding; the sliding rail can connect the wind shielding plate and the blade main body, so that the wind shielding plate can move on the sliding rail through the power device to shield through space, thereby obtaining continuously variable windward area, and the wind shielding plate can completely shield through space to form a complete blade identical to a conventional blade, can also be completely retracted into the hollow blade, and the windward area of the blade is reduced to the minimum.
2. A novel wind turbine blade with continuously variable area according to claim 1, wherein: the windward area of the blade has a certain relation with the wind speed, namely, the windward area of the blade is changed by changing the area of the transparent space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711061528.XA CN109751203B (en) | 2017-11-02 | 2017-11-02 | Novel wind driven generator blade with continuously variable area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711061528.XA CN109751203B (en) | 2017-11-02 | 2017-11-02 | Novel wind driven generator blade with continuously variable area |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109751203A CN109751203A (en) | 2019-05-14 |
| CN109751203B true CN109751203B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711061528.XA Active CN109751203B (en) | 2017-11-02 | 2017-11-02 | Novel wind driven generator blade with continuously variable area |
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| CN (1) | CN109751203B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003206847A (en) * | 2002-01-11 | 2003-07-25 | Mitsubishi Heavy Ind Ltd | Windmill having span-variable wing |
| CN101245763A (en) * | 2007-02-12 | 2008-08-20 | 顾乔祺 | Vertical aerogenerator blade assembly and method for wind power generation variable coiling combination |
| CN101275536A (en) * | 2007-03-27 | 2008-10-01 | 通用电气公司 | Rotor blade for a wind turbine having a variable dimension |
| CN102269119A (en) * | 2011-08-22 | 2011-12-07 | 朱克彦 | Impellor of self-regulating wind driven generator |
| CA2775559A1 (en) * | 2011-04-29 | 2012-10-29 | Envision Energy (Denmark) Aps | A wind turbine and an associated control method |
| CN102808724A (en) * | 2011-06-02 | 2012-12-05 | 吕勤 | Fan blade device automatically variable in windward area |
| CN104018996A (en) * | 2014-05-30 | 2014-09-03 | 西安交通大学 | Wind turbine blade with automatic windward area adjustment function |
| GR20130100479A (en) * | 2013-08-20 | 2015-03-18 | Αριστειδης Εμμανουηλ Δερμιτζακης | Wind generator operated with low-speed wind |
| CN104564523A (en) * | 2013-10-12 | 2015-04-29 | 曾莉芳 | Wind driven generator with blades with guide, backlash and extension and retraction functions |
| CN207864105U (en) * | 2017-11-02 | 2018-09-14 | 西安交通大学 | A kind of novel wind power generator blade using open space |
-
2017
- 2017-11-02 CN CN201711061528.XA patent/CN109751203B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003206847A (en) * | 2002-01-11 | 2003-07-25 | Mitsubishi Heavy Ind Ltd | Windmill having span-variable wing |
| CN101245763A (en) * | 2007-02-12 | 2008-08-20 | 顾乔祺 | Vertical aerogenerator blade assembly and method for wind power generation variable coiling combination |
| CN101275536A (en) * | 2007-03-27 | 2008-10-01 | 通用电气公司 | Rotor blade for a wind turbine having a variable dimension |
| CA2775559A1 (en) * | 2011-04-29 | 2012-10-29 | Envision Energy (Denmark) Aps | A wind turbine and an associated control method |
| CN102808724A (en) * | 2011-06-02 | 2012-12-05 | 吕勤 | Fan blade device automatically variable in windward area |
| CN102269119A (en) * | 2011-08-22 | 2011-12-07 | 朱克彦 | Impellor of self-regulating wind driven generator |
| GR20130100479A (en) * | 2013-08-20 | 2015-03-18 | Αριστειδης Εμμανουηλ Δερμιτζακης | Wind generator operated with low-speed wind |
| CN104564523A (en) * | 2013-10-12 | 2015-04-29 | 曾莉芳 | Wind driven generator with blades with guide, backlash and extension and retraction functions |
| CN104018996A (en) * | 2014-05-30 | 2014-09-03 | 西安交通大学 | Wind turbine blade with automatic windward area adjustment function |
| CN207864105U (en) * | 2017-11-02 | 2018-09-14 | 西安交通大学 | A kind of novel wind power generator blade using open space |
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| CN109751203A (en) | 2019-05-14 |
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