CN204152734U - A kind of wind power generation unit blade leaf and root structure - Google Patents
A kind of wind power generation unit blade leaf and root structure Download PDFInfo
- Publication number
- CN204152734U CN204152734U CN201420605807.3U CN201420605807U CN204152734U CN 204152734 U CN204152734 U CN 204152734U CN 201420605807 U CN201420605807 U CN 201420605807U CN 204152734 U CN204152734 U CN 204152734U
- Authority
- CN
- China
- Prior art keywords
- root
- blade
- filling member
- wind electricity
- leaf
- 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.)
- Expired - Lifetime
Links
- 238000010248 power generation Methods 0.000 title description 4
- 230000005611 electricity Effects 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 13
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
Classifications
-
- Y02E10/722—
Landscapes
- Wind Motors (AREA)
Abstract
The utility model discloses a kind of linkage structure, especially a kind of wind electricity blade leaf and root structure, belong to clean and renewable energy device technical field of structures; Described wind electricity blade leaf and root structure comprises blade root and the link be arranged at for being connected with pitch variable bearings on blade root, and the link place section of described blade root is also provided with filling member, and the material that described filling member adopts Young's modulus to be greater than blade root Young's modulus is made; Wind electricity blade leaf and root structure of the present utility model, Young's modulus is adopted to be greater than the material of blade root as filling member, be arranged on root of blade to increase root of blade rigidity, thus increased link global stiffness, play reduction and be assigned to the power of bolt to improve the effect of the fatigue strength allowance of bolt.
Description
Technical field
The utility model relates to a kind of linkage structure, especially a kind of wind electricity blade leaf and root structure, belongs to clean and renewable energy device technical field of structures.
Background technique
For ensureing the safe operation of Wind turbines, the connecting bolt between all parts and all parts must be made to meet the limit and fatigue design requirement.
The bolt of blade root is connected to (or outer) circle in root of blade and pitch variable bearings, link material is respectively glass fibre reinforced plastics and alloyed steel, glass fibre reinforced plastics Young's modulus is about 30GPa, and the Young's modulus of alloyed steel is 206GPa, when causing bolt fastening structure stand under load, the power being assigned to bolt is excessive, the fatigue strength allowance of bolt is low, along with the increase of length of blade, fatigue load also increases thereupon, is easy to cause the fatigue strength of bolt not meet design requirement.The reliability connected easily is caused to reduce after unit operates for a long time.
Summary of the invention
Goal of the invention of the present utility model is: for above-mentioned Problems existing, provides a kind of wind electricity blade leaf and root structure, to solve the low problem of connecting bolt fatigue strength allowance between wind power generation unit blade root and pitch variable bearings, improves the reliability connected.
The technical solution adopted in the utility model is as follows:
A kind of wind electricity blade leaf and root structure, comprise blade root and the link be arranged at for being connected with pitch variable bearings on blade root, the link place section of described blade root is also provided with filling member, and the material that described filling member adopts Young's modulus to be greater than blade root Young's modulus is made.Be greater than the material of blade root as filling member owing to have employed Young's modulus, be arranged on root of blade to increase root of blade rigidity, thus increase link global stiffness, play reduction and be assigned to the power of bolt to improve the effect of the fatigue strength allowance of bolt.
Further, described filling member is provided with through hole, and described link is arranged on blade root through the through hole of filling member.Link through through hole, makes filling member can playing a supporting role in whole ring week from link, and the power effect reducing to be assigned to bolt strengthens further, improves the fatigue strength allowance of bolt further.
Wind electricity blade leaf and root structure of the present utility model, described filling member is arranged in blade root.
Further, described filling member end face and blade root end face are positioned at same plane.
Wind electricity blade leaf and root structure of the present utility model, described filling member is arranged at blade root end face.
Wind electricity blade leaf and root structure of the present utility model, described link is bolt.
Further, described bolt is T-shaped bolt.
Wind electricity blade leaf and root structure of the present utility model, described blade root adopts glass fibre reinforced plastics to make.
A kind of wind electricity blade adopting described wind electricity blade leaf and root structure.
A kind of Wind turbines adopting described wind electricity blade leaf and root structure.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are: described wind electricity blade leaf and root structure, Young's modulus is adopted to be greater than the material of blade root as filling member, be arranged on root of blade to increase root of blade rigidity, thus increase link global stiffness, play reduction and be assigned to the power of bolt to improve the effect of the fatigue strength allowance of bolt.
Accompanying drawing explanation
The utility model illustrates by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is a kind of schematic diagram of leaf and root structure of the present utility model;
Fig. 2 is a kind of schematic diagram of leaf and root structure of the present utility model;
Fig. 3 is the another kind intention of leaf and root structure of the present utility model;
Fig. 4 is the another kind intention of leaf and root structure of the present utility model;
Fig. 5 is blade root and the pitch variable bearings connection diagram of the utility model Fig. 1.
Mark in figure: 1-blade root, 2-link, 3-filling member, 4-pitch variable bearings.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
embodiment 1
A kind of wind electricity blade leaf and root structure, its structure as shown in Figure 1, comprise blade root 1 and the link 2 being fixedly installed on blade root 1, described blade root 1 is cylindrical shape, link 2 is T-shaped bolt, T-shaped bolt arranges a whole circle along whole blade root 1 circular cross-section, for connecting wind electricity blade and Wind turbines pitch variable bearings.
Filling member 3 is embedded with in each T-shaped bolt position of described blade root 1, filling member 3 is cylindrical shape, described T-shaped bolt is arranged on blade root 1 through the through hole of filling member 3, filling member 3 outer wall be connected as a single entity structure bonding with blade root 1, T-shaped bolt adapts in the through hole of filling member 3, the lower end surface of described filling member 3 flushes with the attachment face of blade root 1, the length of filling member 3 is about the length that T-shaped bolt is positioned at blade root 1 inner screw, the upper-end surface of filling member 3 is that arc-shaped is with adaptive with the T-shaped portion cylinder of bolt, the Young's modulus of described filling member 3 is greater than the Young's modulus of blade root 1, general blade, blade root 1 adopts glass steel material to make, therefore filling member 3 adopts the metal materials such as steel to make.
embodiment 2
A kind of wind electricity blade leaf and root structure, its structure as shown in Figure 2, comprise blade root 1 and the link 2 being fixedly installed on blade root 1, described blade root 1 is cylindrical shape, link 2 is T-shaped bolt, T-shaped bolt arranges a whole circle along whole blade root 1 circular cross-section, for connecting wind electricity blade and Wind turbines pitch variable bearings.
Filling member 3 is embedded with in each T-shaped bolt position of described blade root 1, filling member 3 is cylindrical shape, described T-shaped bolt is arranged on blade root 1 through the through hole of filling member 3, filling member 3 outer wall be connected as a single entity structure bonding with blade root 1, T-shaped bolt adapts in the through hole of filling member 3, the lower end surface of described filling member 3 flushes with the attachment face of blade root 1, filling member 3 length extends to the stage casing that bolt is positioned at blade root 1 inner screw length, the Young's modulus of described filling member 3 is greater than the Young's modulus of blade root 1, general blade, blade root 1 adopts glass steel material to make, therefore filling member 3 adopts the metal materials such as steel to make.
embodiment 3
A kind of wind electricity blade leaf and root structure, its structure as shown in Figure 3, comprise blade root 1 and the link 2 being fixedly installed on blade root 1, described blade root 1 is cylindrical shape, link 2 is T-shaped bolt, T-shaped bolt arranges a whole circle along whole blade root 1 circular cross-section, for connecting wind electricity blade and Wind turbines pitch variable bearings.
The end face of described blade root 1 is provided with filling member 3, described filling member 3 is a flange sleeve, the screw rod of T-shaped bolt is arranged on blade root 1 through the bolt hole of flange sleeve, the lower end surface of described flange sleeve forms the attachment face of blade root 1, Garland cover length and blade root 1 length is made to form the design length of whole blade root 1, the Young's modulus of flange sleeve is greater than the Young's modulus of blade root 1, general blade, blade root 1 adopt glass steel material to make, therefore flange sleeve adopts the metal material such as steel, or the material that other Young's modulus are greater than blade root 1 is made.
embodiment 4
A kind of wind electricity blade leaf and root structure, its structure as shown in Figure 4, comprise blade root 1 and the link 2 being fixedly installed on blade root 1, described blade root 1 is cylindrical shape, link 2 is T-shaped bolt, T-shaped bolt arranges a whole circle along whole blade root 1 circular cross-section, for connecting wind electricity blade and Wind turbines pitch variable bearings.
Filling member 3 is embedded with in each T-shaped bolt position of described blade root 1, filling member 3 side's of being bar shaped or cylindrical, be embedded in blade root 1 position of described T-shaped bolt side, filling member 3 outer wall be connected as a single entity structure bonding with blade root 1, the lower end surface of described filling member 3 flushes with the attachment face of blade root 1, the length of filling member 3 is about the length that T-shaped bolt is positioned at blade root 1 inner screw, the upper-end surface of filling member 3 is that arc-shaped is with adaptive with the T-shaped portion cylinder of bolt, the Young's modulus of described filling member 3 is greater than the Young's modulus of blade root 1, general blade, blade root 1 adopts glass steel material to make, therefore filling member 3 adopts the metal materials such as steel to make.
embodiment 5
The present embodiment is a kind of wind electricity blade adopting the wind electricity blade leaf and root structure described shown in embodiment 1, embodiment 2, embodiment 3 or embodiment 4.
embodiment 6
The present embodiment is a kind of Wind turbines adopting wind electricity blade described in embodiment 5, and the blade root 1 of described blade connects as one structure by pitch variable bearings 4 inner ring of link 2 and unit or outer shroud, and described link 2 is bolt, as shown in Figure 5.Wind electricity blade leaf and root structure of the present invention, described bolt is fixed on blade root to install with the pitch variable bearings of wheel hub for blade and is connected, the material of blade root is greater than as filling member 3 by adopting Young's modulus, be arranged on root of blade to increase root of blade rigidity, thus increase link global stiffness, play the power reducing to be assigned to bolt, improve the effect of the fatigue strength allowance of bolt.
In engineering experiment, the blade root bolt of wind power generation unit blade is after being subject to Moment, its flexural stress is 31MPa, only have 7.6 years fatigue life, by after the improvement of carrying out this invention technological scheme, such as, adopt the scheme of example 3, under same Moment, blade root bolts bend stress only has 16.7MPa, and fatigue life can reach 22 years.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (10)
1. a wind electricity blade leaf and root structure, it is characterized in that: comprise blade root (1) and the link (2) be arranged at for being connected with pitch variable bearings on blade root (1), link (2) the place section of described blade root (1) is also provided with filling member (3), and the material that described filling member (3) adopts Young's modulus to be greater than blade root (1) Young's modulus is made.
2. wind electricity blade leaf and root structure as claimed in claim 1, it is characterized in that: described filling member (3) is provided with through hole, described link (2) is arranged on blade root (1) through the through hole of filling member (3).
3. wind electricity blade leaf and root structure as claimed in claim 2, is characterized in that: described filling member (3) is arranged in blade root (1).
4. wind electricity blade leaf and root structure as claimed in claim 3, is characterized in that: described filling member (3) end face and blade root (1) end face are positioned at same plane.
5. wind electricity blade leaf and root structure as claimed in claim 2, is characterized in that: described filling member (3) is arranged at blade root (1) end face.
6. the wind electricity blade leaf and root structure as described in any one of claim 1 to 5, is characterized in that: described link (2) is bolt.
7. wind electricity blade leaf and root structure as claimed in claim 6, is characterized in that: described bolt is T-shaped bolt.
8. wind electricity blade leaf and root structure as claimed in claim 1, is characterized in that: described blade root (1) adopts glass fibre reinforced plastics to make.
9. one kind adopts the wind electricity blade of the wind electricity blade leaf and root structure as described in any one of claim 1 to 8.
10. one kind adopts the Wind turbines of the wind electricity blade leaf and root structure as described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605807.3U CN204152734U (en) | 2014-10-21 | 2014-10-21 | A kind of wind power generation unit blade leaf and root structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605807.3U CN204152734U (en) | 2014-10-21 | 2014-10-21 | A kind of wind power generation unit blade leaf and root structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204152734U true CN204152734U (en) | 2015-02-11 |
Family
ID=52510855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420605807.3U Expired - Lifetime CN204152734U (en) | 2014-10-21 | 2014-10-21 | A kind of wind power generation unit blade leaf and root structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204152734U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106609726A (en) * | 2016-12-20 | 2017-05-03 | 北京金风科创风电设备有限公司 | Insert for blade, blade and wind generating set |
| WO2017211929A1 (en) * | 2016-06-08 | 2017-12-14 | Wobben Properties Gmbh | Rotor for a wind turbine, rotor blade for a wind turbine, sleeve, and method for assembling a rotor |
| CN110778455A (en) * | 2019-12-11 | 2020-02-11 | 湘电风能有限公司 | Variable pitch connecting structure of wind generating set |
| CN111702169A (en) * | 2020-08-10 | 2020-09-25 | 湖南飞阳齿轮制造有限责任公司 | Iron-based powder pressing device for gear production and pressing method thereof |
-
2014
- 2014-10-21 CN CN201420605807.3U patent/CN204152734U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211929A1 (en) * | 2016-06-08 | 2017-12-14 | Wobben Properties Gmbh | Rotor for a wind turbine, rotor blade for a wind turbine, sleeve, and method for assembling a rotor |
| US20190264650A1 (en) * | 2016-06-08 | 2019-08-29 | Wobben Properties Gmbh | Rotor for a wind turbine, rotor blade for a wind turbine, sleeve, and method for assembling a rotor |
| RU2717470C1 (en) * | 2016-06-08 | 2020-03-23 | Воббен Пропертиз Гмбх | Rotor for wind-driven power plant, rotor blade for wind-driven power plant, bushing and rotor mounting method |
| US10865767B2 (en) * | 2016-06-08 | 2020-12-15 | Wobben Properties Gmbh | Rotor for a wind turbine, rotor blade for a wind turbine, sleeve, and method for assembling a rotor |
| CN106609726A (en) * | 2016-12-20 | 2017-05-03 | 北京金风科创风电设备有限公司 | Insert for blade, blade and wind generating set |
| CN106609726B (en) * | 2016-12-20 | 2019-10-11 | 北京金风科创风电设备有限公司 | Inserts for blades, blades and wind power generators |
| CN110778455A (en) * | 2019-12-11 | 2020-02-11 | 湘电风能有限公司 | Variable pitch connecting structure of wind generating set |
| CN111702169A (en) * | 2020-08-10 | 2020-09-25 | 湖南飞阳齿轮制造有限责任公司 | Iron-based powder pressing device for gear production and pressing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204152734U (en) | A kind of wind power generation unit blade leaf and root structure | |
| DK178210B1 (en) | Extension for rotor blade in wind turbine | |
| EP2957765B1 (en) | Wind blade tip joint | |
| WO2012140048A3 (en) | Wind turbine blade having a root region with elongated fastening members provided with metal fibres | |
| WO2012146745A3 (en) | Pitch bearing | |
| CN102207059B (en) | Wind turbine, tower and method for fabricating the same | |
| US9140235B2 (en) | Variable length blade tip molds, tip assemblies and methods for manufacturing the same | |
| US9890764B2 (en) | Trailing edge cap for a rotor blade and method of manufacturing same | |
| EP2317124A3 (en) | Wind turbine blade | |
| AU2011246663B2 (en) | Rotor for a wind turbine | |
| JP5749777B2 (en) | Wind turbine with offset suction side | |
| EP2108819A3 (en) | Blade root extender | |
| DE602007010088D1 (en) | Rotor blade for a wind energy plant | |
| CN106930896A (en) | A kind of band connection rod-type fan blade and wind-driven generator | |
| CN204283729U (en) | A kind of wind generator set blade blade pitch device | |
| CN205225591U (en) | Aerogenerator becomes reinforcing structure of oar bearing | |
| CN203321054U (en) | Tower of wind turbine generator | |
| CN204437484U (en) | The support of duct of large-span steel rack | |
| CN201794723U (en) | Wind wheel enlarging ring | |
| CN104595110A (en) | Draught fan wind wheel adjusting device and draught fan set comprising draught fan wind wheel adjusting device | |
| CN203297041U (en) | Device for improving rigidity of wind machine tower | |
| CN107620668B (en) | Typhoon-resistant offshore wind turbine segmented blade | |
| CN203960984U (en) | Suspension, the bracing means of the indoor drainage pipe of burying underground in Soft Soil Area | |
| CN105649868B (en) | Intensifier outside a kind of wind turbine blade face based on wing fence Tiebar structure | |
| CN202096930U (en) | Improved mixer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160419 Address after: 618000 Sichuan Province, Deyang city Huashan road two No. 2 Patentee after: DONGFANG ELECTRIC WIND POWER Co.,Ltd. Address before: 618000 Jiangxi hi tech Industrial Park, Sichuan, Jinsha Road, No. 666, No. Patentee before: DONGFANG TURBINE Co.,Ltd. DTC |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 618000 2 Huashan South Road, Deyang, Sichuan, 2 Patentee after: Dongfang Electric Wind Power Co.,Ltd. Address before: 618000 2 Huashan South Road, Deyang, Sichuan, 2 Patentee before: DONGFANG ELECTRIC WIND POWER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150211 |
|
| CX01 | Expiry of patent term |