CN111022250A - Wind driven generator blade capable of being rolled in segmented mode - Google Patents
Wind driven generator blade capable of being rolled in segmented mode Download PDFInfo
- Publication number
- CN111022250A CN111022250A CN202010005703.9A CN202010005703A CN111022250A CN 111022250 A CN111022250 A CN 111022250A CN 202010005703 A CN202010005703 A CN 202010005703A CN 111022250 A CN111022250 A CN 111022250A
- Authority
- CN
- China
- Prior art keywords
- blade
- edge part
- wind
- segmentation unit
- furlable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000011218 segmentation Effects 0.000 claims abstract description 24
- 238000010248 power generation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Images
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
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
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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
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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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 wind driven generator blade capable of being rolled in a segmented mode, which comprises a blade body, wherein a plurality of blade segmentation units which are sequentially connected are arranged between a blade root and a blade tip of the blade body, a scroll extending along the length direction of the blade segmentation unit is arranged in each blade segmentation unit, the front edge part of each blade segmentation unit is fixed, the rear edge part of each blade segmentation unit is in a furlable mode, one side edge of the furlable rear edge part is connected to the scroll, the other side edge of the furlable rear edge part is lapped on the front edge part, and two ends of the furlable rear edge part are respectively installed on guide rails at two ends of each blade segmentation unit in a sliding mode. The invention can automatically adjust the wind catching area of the blade according to the actual running condition, and realize that the blade automatically adjusts the wind energy catching capability under different wind conditions.
Description
Technical Field
The invention relates to the technical field of wind driven generator blades, in particular to a wind driven generator blade capable of being rolled in a segmented mode.
Background
Wind power is considered one of the cleanest, most environmentally friendly green sources currently available, and in recent years, wind power generation is becoming a hot tide in the world and becoming more favored. The principle of wind power generation is that wind energy is utilized to drive blades of a wind generating set to rotate, and then a speed-up gear box is used to increase the rotating speed or directly drive a generator to rotate to generate power. The kinetic energy of wind is converted into mechanical energy, and then the mechanical energy is converted into electric energy, namely wind power generation.
The blade as a wind catching device in the wind generating set is one of the most critical and important components in the wind generating set, the cost of the blade accounts for about 20% of the whole wind generating set, and the safety of the blade directly influences the safe and reliable operation of the wind generating set. The design life of the wind turbine set is generally 20 years or 25 years, in such a long life cycle, extreme wind conditions such as typhoon and the like can be met, and the current measures for dealing with the extreme working conditions are generally rigid resistance after feathering shutdown, so that the blades have to be heavy to meet the requirements of structural rigidity and strength of the blades, and the generated energy in the typhoon period is lost. Therefore, how to design the high-safety blades, reducing the load of the whole machine under extreme working conditions to ensure the safe and reliable operation of the unit and simultaneously taking the function of controlling the output power of the unit into consideration is always a key concern in the design of the wind turbine unit.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a wind driven generator blade capable of being rolled in a segmented mode, which can automatically adjust the wind catching area of each blade segmented unit according to the actual operation condition, realize the automatic adjustment of the wind energy catching capacity of the blade under different wind conditions, control the load borne by the blade, increase the load by using small wind, reduce the load by using large wind, improve the generated energy of a unit by using the wind energy to the maximum extent, and simultaneously ensure the safe and reliable operation of the unit.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a wind driven generator blade capable of being rolled in a segmented mode comprises a blade body, a plurality of blade segmentation units which are sequentially connected are arranged between a blade root and a blade tip of the blade body, a scroll extending along the length direction of the blade segmentation unit is arranged inside each blade segmentation unit, the front edge part of each blade segmentation unit is fixed, the rear edge part of each blade segmentation unit is in a furlable mode, one side edge of the rear edge part of each furlable mode is connected to the scroll, the other side edge of each furlable mode is lapped on the front edge part, two ends of each blade segmentation unit are respectively installed on guide rails at two ends of each blade segmentation unit in a sliding mode, the rear edge part is driven to slide along the guide rails and roll up or unfold around the scroll through the rotation of the scroll, a sensor is arranged on the surface of each blade segmentation unit and used for detecting the surface pressure load of each blade segmentation unit, a control system connected with, the control systems of the blade section units are mutually independent, the surface pressure load of the blade section units is detected through the sensors and fed back to the corresponding control systems, and the control systems control the rotation of the corresponding reels according to the load so as to adjust the wind catching area of the corresponding blade section units, so that the wind power generation of the wind driven generator under different wind conditions is adapted.
Further, the trajectory of the guide rail is adapted to the airfoil profile shape of the blade segment unit.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the blade can automatically adjust the wind catching area of each blade sectional unit according to the actual operation condition, the capability of the blade for catching wind energy under different wind conditions is automatically adjusted, so that the load borne by the blade is controlled, the safe and reliable operation of the unit is ensured, the generated energy of the unit is improved by utilizing the wind energy to the maximum extent, and if the wind catching area of the blade is reduced at high wind speed, the load of the unit is reduced, the cut-out wind speed is increased, the generated energy is improved, the wind catching area of the blade is increased at low wind speed, the unit is ensured to operate at higher power, and the generated energy of the unit is improved.
2. According to the invention, the wind catching area of the blades is adjusted, so that the blades can also operate under extreme wind conditions such as typhoon and the like, and the generated energy of the unit is improved by utilizing wind energy to the maximum extent.
3. The invention solves the problem of transportation overrun through the sectional type blades, increases the transportation efficiency and reduces the transportation cost.
Drawings
Fig. 1 is a perspective view of the blade of the present invention in a deployed state.
Fig. 2 is a schematic perspective view of the blade of the present invention in a furled state.
Fig. 3 is a perspective view of the blade segment unit of the present invention in a deployed state.
Fig. 4 is a partially enlarged view of the vane segment unit of the present invention in a deployed state.
Fig. 5 is a left side view of the vane segment unit of the present invention in a deployed state.
Fig. 6 is a schematic perspective view of the blade segment unit of the present invention in a retracted state.
Fig. 7 is a left side view of the blade-sectioning unit of the invention, in a furled state.
Detailed Description
The present invention will be further described with reference to the following specific examples.
As shown in fig. 1 to 7, the wind turbine blade capable of being furled in a segmented manner according to the present embodiment includes a blade body, a plurality of blade segment units 1 connected in sequence are disposed between a blade root and a blade tip of the blade body, a reel 2 extending along a length direction of each blade segment unit 1 is disposed inside each blade segment unit 1, a leading edge portion 101 of each blade segment unit 1 is fixed, a trailing edge portion 102 thereof is furlable, one side of the furlable trailing edge portion 102 is connected to the reel 2, the other side thereof is lapped on the leading edge portion 101, two ends thereof are respectively slidably mounted on guide rails 3 at two ends of each blade segment unit 1, a track of each guide rail 3 is adapted to an airfoil profile shape of each blade segment unit 1, the trailing edge portion 102 is driven by rotation of the reel 2 to slide along the guide rails 3 and roll up or unwind around the reel 2, wherein a sensor (not shown in the figures) or a strain gauge is disposed on a surface of each blade segment unit, the control system is connected with a power source of the reel 2 through signals, the control systems of the blade section units 1 are mutually independent, the surface pressure load of the blade section unit 1 is detected through the sensors and fed back to the corresponding control systems, the control systems control the rotation of the corresponding reel 2 according to the load size so as to control the size of the wind catching area of the rear edge part 102, and each blade section unit 1 can automatically adjust the wind catching area according to the size of the pressure load to adapt to the power generation of the wind driven generator under different wind conditions.
The method specifically comprises the following steps: when the wind speed is low, the sensor detects a small surface pressure load, and at the moment, the wind driven generator needs larger wind catching capacity, so that the blades can be unfolded to increase the wind catching area of the blades, the unit is ensured to run at a larger power, and the generating capacity of the unit is improved; when the wind speed is high, the sensor detects large surface pressure load, the load borne by the blade is increased, and the blade needs to be rolled up to reduce the wind catching area of the blade so as to reduce the pressure load borne by the blade, so that the cut-out wind speed of the blade is increased, and the power generation capacity is improved.
In addition, in the transportation process of the large-scale wind driven generator blade, due to limiting factors such as factory buildings and road conditions, the blade can not be manufactured in the same theory, the size of the blade needs to be properly reduced, the wind driven generator blade capable of being rolled up in a segmented mode can not be limited by the limiting factors, the wind driven generator blade capable of being rolled up in the segmented mode is disassembled, the transportation efficiency of the blade is greatly improved, and the transportation cost is reduced.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that variations based on the shape and principle of the present invention should be covered within the scope of the present invention.
Claims (2)
1. The utility model provides a aerogenerator blade of sectional type roll-up, includes the blade body, its characterized in that: the blade comprises a blade body, a plurality of blade segmentation units connected in sequence are arranged between a blade root and a blade tip of the blade body, a scroll extending along the length direction of each blade segmentation unit is arranged in each blade segmentation unit, the front edge part of each blade segmentation unit is fixed, the rear edge part of each blade segmentation unit is of a furlable type, one side edge of each furlable rear edge part is connected to the scroll, the other side edge of each furlable rear edge part is lapped on the front edge part, two ends of each furlable rear edge part are respectively and slidably mounted on guide rails at two ends of each blade segmentation unit, the rear edge part is driven to slide along the guide rails and be furled or unfolded around the scroll through the rotation of the scroll, a sensor is arranged on the surface of each blade segmentation unit and used for detecting the surface pressure load of each blade segmentation unit, a control system connected with the sensor is arranged in each blade segmentation, the surface pressure load of the blade subsection units is detected through the sensors and fed back to the corresponding control systems, and the control systems control the rotation of the corresponding reels according to the load so as to adjust the wind catching area of the corresponding blade subsection units, so that the wind power generation of the wind driven generator under different wind conditions is adapted.
2. A wind turbine blade with segmented furling according to claim 1 wherein: the trajectory of the guide rail is adapted to the airfoil profile shape of the blade segment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010005703.9A CN111022250A (en) | 2020-01-03 | 2020-01-03 | Wind driven generator blade capable of being rolled in segmented mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010005703.9A CN111022250A (en) | 2020-01-03 | 2020-01-03 | Wind driven generator blade capable of being rolled in segmented mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111022250A true CN111022250A (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010005703.9A Pending CN111022250A (en) | 2020-01-03 | 2020-01-03 | Wind driven generator blade capable of being rolled in segmented mode |
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| Country | Link |
|---|---|
| CN (1) | CN111022250A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927699A (en) * | 2020-07-28 | 2020-11-13 | 杭州盛通科技有限公司 | Segmented connected wind driven generator impeller |
-
2020
- 2020-01-03 CN CN202010005703.9A patent/CN111022250A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927699A (en) * | 2020-07-28 | 2020-11-13 | 杭州盛通科技有限公司 | Segmented connected wind driven generator impeller |
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