CN201125841Y - Blade root T type bolt connecting structure of wind generating set blade - Google Patents
Blade root T type bolt connecting structure of wind generating set blade Download PDFInfo
- Publication number
- CN201125841Y CN201125841Y CNU2007200618300U CN200720061830U CN201125841Y CN 201125841 Y CN201125841 Y CN 201125841Y CN U2007200618300 U CNU2007200618300 U CN U2007200618300U CN 200720061830 U CN200720061830 U CN 200720061830U CN 201125841 Y CN201125841 Y CN 201125841Y
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- CN
- China
- Prior art keywords
- blade
- reinforced plastic
- root
- plastic cover
- fiber glass
- 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 - Fee Related
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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
A blade root T type bolt connection structure of the blade on the wind power generator set related by the utility model comprises a fiberglass sleeve, a group of double-screw bolts and cylindrical nuts which are used for the locking connection between the fiberglass sleeve and the electric motor, wherein the connecting end of the fiberglass sleeve is uniformly distributed with a plurality of axial screws and a plurality of radial through holes which penetrate with a ''T'' shape with the axial screws. The double-screw bolts are correspondingly provided in each radial screw. The cylinder nuts are correspondingly inserted in each axial through hole and are connected with the double-screw bolts with a ''T'' shape connection. The key point of designing is that the radial through holes are alternately distributed on the circumference of the fiberglass sleeve with different positions. The aim of the utility model is to provide a blade root T type bolt connection structure which increases the flexural strength of the fiberglass sleeve at the root of the blade at the base that the wall thickness of the fiberglass sleeve of the blade root is not increased on the blade of the wind power generator set.
Description
[technical field]
The utility model relates to a kind of blade root T type bolting structure of wind generator set blade.
[background technique]
Along with the appearance of big capacity wind-powered electricity generation unit, the development of blade technology is advanced by leaps and bounds, and the size and the length of blade are increasing, and for example 1.5MW wind power generation unit blade length reaches 40 meters.The ultimate bending moment of root of blade reaches 6MNm.The pre-embedded bolt organization plan progress that originally small-sized blade adopts is to adopting special-purpose punching machine T type bolt fastening structure scheme of construction bolt again behind blade forming, as depicted in figs. 1 and 2, the connecting end of fiber glass reinforced plastic cover 1 is evenly equipped with a plurality of axial screws 11 and is a plurality of radial direction through hole 12 that T-shape connects with axial screw 11, a plurality of stud 2 corresponding spirals are in each axial screw 11, a plurality of cylindrical nut 3 correspondences are inserted in each radial direction through hole 12, and stud 2 is positioned at the screw of an end spiral on cylindrical nut 3 shafts of fiber glass reinforced plastic cover 1.The benefit of this scheme be reliable and also work efficiency high, but the existing way of this scheme is to open row's radial direction through hole on root of blade fiber glass reinforced plastic cover circumference, because the radial direction through hole diameter is bigger, occupy more locational space, so limited perforate quantity to a certain extent, after girth and hole count are determined, it is too little to face two fiber glass reinforced plastic cover jacket wall hoop sizes between the cylindrical nut 3 mutually, the deflation of distance between borehole causes root of blade glass fibre reinforced plastics self join strength and unfailing performance to reduce, need to adopt the fiber glass reinforced plastic cover radial dimension that increases between two cylindrical nuts to come reinforcement, cause the increase of material and the increase of cost undoubtedly.
[model utility content]
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of wind generator set blade do not increase blade root fiber glass reinforced plastic cover wall thickness the basis on, improve the blade root T type bolting structure of root of blade fiber glass reinforced plastic cover resistance to flexure.
In order to solve the technical problem of above-mentioned existence, the utility model adopts following technical proposals:
The blade root T type bolting structure of wind generator set blade, it includes the fiber glass reinforced plastic cover that is positioned at root of blade, and the one group of stud and the cylindrical nut that are used for fiber glass reinforced plastic cover and electromechanical locks stressed joint, wherein the connecting end in fiber glass reinforced plastic cover is evenly equipped with a plurality of axial screws and is a plurality of radial direction through hole that T-shape connects with axial screw, described stud correspondence is contained in each axial screw, described cylindrical nut correspondence is inserted in each radial direction through hole and is T-shape with stud and is connected, and it is characterized in that described radial direction through hole alternately is arranged on the circumference of diverse location on the fiber glass reinforced plastic cover;
The blade root T type bolting structure of aforesaid wind generator set blade is characterized in that described radial direction through hole alternately is arranged on the circumference of two diverse locations on the fiber glass reinforced plastic cover.
The beneficial effects of the utility model are:
1, when the bolt quantity one of root of blade regularly, the bolt dislocation is arranged on the different circumference of fiber glass reinforced plastic cover, make that the centre distance between bolt is big on the same circumference, so, glass fibre reinforced plastics hoop size between two bolts is also big, increase the intensity of punching back fiber glass reinforced plastic cover so greatly, guaranteed the join strength and the reliability of root of blade;
2, on the join strength and reliability basis that guarantee root of blade, owing to the glass fibre reinforced plastics hoop size between two cylindrical nuts is bigger, can adopt more stud and cylindrical nut to reduce the wall thickness of root of blade fiber glass reinforced plastic cover on the fiber glass reinforced plastic cover, so both saved glass fibre reinforced plastic material, make things convenient for fiber glass reinforced plastic cover processing again, cost of production has reduced naturally.
[description of drawings]
Fig. 1 is the bolted schematic representation of single T type on the blade root circumference in the prior art scheme;
Fig. 2 is the cut-away view at place, arbitrary T type hole on Fig. 1;
Fig. 3 is the bolted signal of double T type on the different circumference of blade root in the utility model;
Fig. 4 is a plan view of the present utility model;
Fig. 5 is the partial cutaway diagrammatic sketch of arbitrary T type bolt joint in the utility model;
Fig. 6 is the cut-away view that arbitrary T type hole is located on the fiber glass reinforced plastic cover in the utility model.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in the figure, the blade root T type bolting structure of wind generator set blade, it includes the fiber glass reinforced plastic cover 1 that is positioned at root of blade, and the one group of stud 2 and the cylindrical nut 3 that are used for fiber glass reinforced plastic cover 1 and electromechanical locks stressed joint.
Connecting end in fiber glass reinforced plastic cover 1 is evenly equipped with a plurality of axial screws 11 and is a plurality of radial direction through hole 12 that T-shape connects with axial screw 11, a plurality of stud 2 correspondences are contained in each axial screw 11, a plurality of cylindrical nut 3 correspondences are inserted in each radial direction through hole 12, stud 2 is positioned at the screw of an end spiral on cylindrical nut 3 shafts of fiber glass reinforced plastic cover 1, thereby is screwed in the linkage structure that forms " T " with cylindrical nut 3.In order to improve root of blade fiber glass reinforced plastic cover 1 resistance to flexure, each radial direction through hole 12 alternately is arranged on the circumference of diverse location on the fiber glass reinforced plastic cover 1.In the utility model, radial direction through hole 12 is distributed on 1 two different circumference of fiber glass reinforced plastic cover, and the position, hole of the radial direction through hole 12 on every row is on the position of circumference in equal parts, and every position, two radial direction through hole 12 holes of facing mutually is along the hoop centre distance that staggers half between two rounds.
In use, the T type bolt fastening structure of root of blade fiber glass reinforced plastic cover 1 relates to the strength problem of two aspects, it on the one hand is the strength problem (same double-screw bolt, nut quantity relevant) of double-screw bolt, nut itself with diameter, after being 1 punching of blade root fiber glass reinforced plastic cover on the other hand, whether residue glass fibre reinforced plastics part intensity is abundant.The bolt quantity that can arrange on the limited circuferential spacing of root of blade fiber glass reinforced plastic cover 1 is limited, must take into account bolt strength and residue glass fibre reinforced plastics intensity.
Equally, on the join strength and reliability basis that guarantee root of blade fiber glass reinforced plastic cover 1, owing to the glass fibre reinforced plastics hoop size between two cylindrical nuts 3 is bigger, can adopt more stud 2 and cylindrical nut 3 on the fiber glass reinforced plastic cover 1, the bolt join strength is big like this, can suitably reduce the wall thickness of root of blade fiber glass reinforced plastic cover 1, has so both saved glass fibre reinforced plastic material, make things convenient for fiber glass reinforced plastic cover 1 processing again, and cost of production has reduced.
Claims (2)
1, the blade root T type bolting structure of wind generator set blade, it includes the fiber glass reinforced plastic cover (1) that is positioned at root of blade, and the one group of stud (2) and the cylindrical nut (3) that are used for fiber glass reinforced plastic cover (1) and electromechanical locks stressed joint, wherein the connecting end in fiber glass reinforced plastic cover (1) is evenly equipped with a plurality of axial screws (11) and is a plurality of radial direction through hole (12) that T-shape connects with axial screw (11), described stud (2) correspondence is contained in each axial screw (11), described cylindrical nut (3) correspondence is inserted in each radial direction through hole (12) and is T-shape with stud (2) and is connected, and it is characterized in that described radial direction through hole (12) alternately is arranged in fiber glass reinforced plastic cover (1) and goes up on the circumference of diverse location.
2, the blade root T type bolting structure of wind generator set blade according to claim 1 is characterized in that described radial direction through hole (12) alternately is arranged on the circumference of last two diverse locations of fiber glass reinforced plastic cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200618300U CN201125841Y (en) | 2007-12-21 | 2007-12-21 | Blade root T type bolt connecting structure of wind generating set blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200618300U CN201125841Y (en) | 2007-12-21 | 2007-12-21 | Blade root T type bolt connecting structure of wind generating set blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201125841Y true CN201125841Y (en) | 2008-10-01 |
Family
ID=39999310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200618300U Expired - Fee Related CN201125841Y (en) | 2007-12-21 | 2007-12-21 | Blade root T type bolt connecting structure of wind generating set blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201125841Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865092B (en) * | 2009-04-14 | 2012-01-11 | 上海艾郎风电科技发展有限公司 | Method for mounting and positioning megawatt wind-power blade root end bolt |
| CN102562486A (en) * | 2012-02-07 | 2012-07-11 | 国电联合动力技术有限公司 | Sectional wind turbine blade and installation method thereof |
| CN103470456A (en) * | 2013-09-23 | 2013-12-25 | 华北电力大学（保定） | Sectional wind power generation blade with interchangeability |
| CN108603484A (en) * | 2015-12-14 | 2018-09-28 | 维斯塔斯风力系统有限公司 | Connector and correlation technique for wind turbine rotor blade to be connected to rotor hub |
-
2007
- 2007-12-21 CN CNU2007200618300U patent/CN201125841Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865092B (en) * | 2009-04-14 | 2012-01-11 | 上海艾郎风电科技发展有限公司 | Method for mounting and positioning megawatt wind-power blade root end bolt |
| CN102562486A (en) * | 2012-02-07 | 2012-07-11 | 国电联合动力技术有限公司 | Sectional wind turbine blade and installation method thereof |
| CN103470456A (en) * | 2013-09-23 | 2013-12-25 | 华北电力大学（保定） | Sectional wind power generation blade with interchangeability |
| CN103470456B (en) * | 2013-09-23 | 2016-04-13 | 华北电力大学（保定） | A kind of segmented wind power generation blade with interchangeability |
| CN108603484A (en) * | 2015-12-14 | 2018-09-28 | 维斯塔斯风力系统有限公司 | Connector and correlation technique for wind turbine rotor blade to be connected to rotor hub |
| US10975838B2 (en) | 2015-12-14 | 2021-04-13 | Vestas Wind Systems A/S | Joint for connecting a wind turbine rotor blade to a rotor hub and associated method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jilin Mingyang Datong Wind Power Technology Co., Ltd. Assignor: Guangdong Mingyang Wind Electrical Technology Co., Ltd. Contract fulfillment period: 2008.11.9 to 2015.11.9 Contract record no.: 2009220000042 Denomination of utility model: Blade root T type bolting structure of wind generator set blade Granted publication date: 20081001 License type: Exclusive license Record date: 20090623 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.9 TO 2015.11.9; CHANGE OF CONTRACT Name of requester: JILIN MINGYANG DATONG WIND POWER TECHNOLOGY CO., L Effective date: 20090623 |
|
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG MINGYANG WIND POWER GROUP CO., LTD. Free format text: FORMER NAME: GUANGDONG MINGYANG WIND + ELECTRICITY TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 528400 five star village, Torch Development Zone, Guangdong, Zhongshan Patentee after: Guangdong Mingyang Wind Power Group Co., Ltd. Address before: 528400 Zhongshan Torch Development Zone, Guangdong Patentee before: Guangdong Mingyang Wind Electrical Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20151221 |
|
| EXPY | Termination of patent right or utility model |