CN110778455A - A wind turbine pitch connection structure - Google Patents
A wind turbine pitch connection structure Download PDFInfo
- Publication number
- CN110778455A CN110778455A CN201911264431.8A CN201911264431A CN110778455A CN 110778455 A CN110778455 A CN 110778455A CN 201911264431 A CN201911264431 A CN 201911264431A CN 110778455 A CN110778455 A CN 110778455A
- Authority
- CN
- China
- Prior art keywords
- pitch
- elastic mechanism
- flanges
- pitch bearing
- blade
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- 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
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
-
- 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
Landscapes
- 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
本发明公开一种风力发电机组变桨连接结构,包括轮毂、变桨轴承和叶片;其特征是:还包括弹性机构,所述变桨轴承的外圈或内圈通过螺栓组和轮毂连接;变桨轴承的内圈或外圈通过螺栓组和弹性机构的一端连接;弹性机构的另一端通过螺栓组和叶片连接;所述的弹性机构使得叶片能够相对于与其连接的变桨轴承内圈或外圈扭转且能够复位。本发明结构简单,成本低,其变桨轴承和叶片之间通过弹性机构间接相连,使得叶片和与之相连的变桨轴承的外圈或内圈之间能够在风载作用下发生相对扭转,增加了系统柔性;使得变桨部件在极端工况下受载更小、更平缓,提高了风力发电机组可靠性。
The invention discloses a pitch connection structure of a wind turbine, comprising a hub, a pitch bearing and blades; it is characterized in that it further comprises an elastic mechanism, and the outer ring or the inner ring of the pitch bearing is connected with the wheel hub through a bolt group; The inner ring or outer ring of the paddle bearing is connected with one end of the elastic mechanism through the bolt group; the other end of the elastic mechanism is connected with the blade through the bolt group; the elastic mechanism enables the blade to be relative to the inner ring or outer ring of the pitch bearing connected to it. The loop twists and can be reset. The invention has simple structure and low cost, and the pitch bearing and the blade are indirectly connected by an elastic mechanism, so that relative torsion can occur between the blade and the outer ring or the inner ring of the pitch bearing connected to it under the action of wind load, The system flexibility is increased; the load of the pitch components is smaller and smoother under extreme working conditions, and the reliability of the wind turbine is improved.
Description
技术领域technical field
本发明涉及风力发电机技术领域,尤其涉及一种风力发电机组变桨连接结构。The invention relates to the technical field of wind power generators, in particular to a pitch connection structure of a wind power generator set.
背景技术Background technique
风力发电机组变桨装置是风力发电机组重要组成部分,由轮毂、变桨轴承和叶片组成。大兆瓦风力发电机组的变桨装置通常在固定的变桨轴承内圈或固定的变桨轴承外圈上设置有变桨齿轮,当风载较大时,通过安装在轮毂上的变桨驱动,以齿轮啮合的方式带动变桨轴承和叶片旋转,从而通过叶片攻角的改变来降低气动载荷,保证风力发电机组安全可靠运行。The wind turbine pitch device is an important part of the wind turbine, consisting of the hub, the pitch bearing and the blades. The pitch device of the large megawatt wind turbine is usually provided with a pitch gear on the inner ring of the fixed pitch bearing or the outer ring of the fixed pitch bearing. When the wind load is large, it is driven by the pitch mounted on the hub. , drive the pitch bearing and the blade to rotate in the way of gear meshing, so as to reduce the aerodynamic load by changing the angle of attack of the blade, and ensure the safe and reliable operation of the wind turbine.
传统的风力发电机组变桨连接结构如图1所示,变桨轴承2外圈2-1通过螺栓组11和轮毂1连接固定,而变桨轴承内圈2-2通过螺栓组12和叶片4连接固定。该变桨连接结构在风电大兆瓦机组上已有超过10年以上的应用经验,具有传动结构高可靠性的优点。但是随着叶轮直径不断加大,风机工况越来越恶劣,该结构下述弊端日益凸显:The traditional wind turbine pitch connection structure is shown in Figure 1. The outer ring 2-1 of the
1.发电时变桨电机抱死,叶片和轮毂之间是一种刚性连接,这就使得风载较大时,变桨系统直接承受较大的能量冲击,从而造成变桨轴承、叶片承受过大载荷和冲击,导致变桨部件过早损坏;1. When generating power, the pitch motor is locked, and there is a rigid connection between the blade and the hub, which makes the pitch system directly bear a larger energy impact when the wind load is large, which causes the pitch bearing and blade to be overburdened. High loads and shocks, leading to premature failure of pitch components;
2.变桨时,变桨电机承受负载波动较大,容易出现前期变桨缓慢而后期变桨过快,加快了变桨部件损坏;2. When pitching, the pitch motor is subject to large load fluctuations, which is prone to slow pitching in the early stage and too fast pitching in the later stage, which accelerates the damage to the pitching components;
3.极端工况下,载荷较大,叶片容易被吹开,导致三个叶片桨叶角差别巨大,产生非常大的额外气动不平衡载荷,从而使得变桨部件过早失效。3. Under extreme working conditions, the load is large and the blades are easily blown apart, resulting in a huge difference in the blade angles of the three blades, resulting in a very large additional aerodynamic unbalanced load, resulting in premature failure of the pitch components.
发明内容SUMMARY OF THE INVENTION
为解决现有技术中存在的问题,本发明提供一种结构简单、成本低的风力发电机组变桨连接结构,它的叶片和变桨轴承通过一种柔性结构连接,在高载时叶片通过扭转吸收风载极端能量,同时在低载时,具有自复位功能,有助于电机变桨的负载稳定性;而且能够有效缓解三个叶片在极端风况下不同步情况,降低了气动不平衡载荷。In order to solve the problems existing in the prior art, the present invention provides a wind turbine pitch connection structure with simple structure and low cost. Absorb the extreme energy of wind load, and at the same time at low load, it has a self-reset function, which helps the load stability of the motor pitch; and it can effectively alleviate the asynchronous situation of the three blades under extreme wind conditions, reducing the aerodynamic unbalanced load .
本发明采用的技术方案是:一种风力发电机组变桨连接结构,包括轮毂、变桨轴承、弹性机构和叶片;所述变桨轴承的外圈或内圈通过螺栓组和轮毂连接;变桨轴承的外圈和轮毂连接时,变桨轴承的内圈通过螺栓组和弹性机构的一端连接,变桨轴承的内圈和轮毂连接时,变桨轴承的外圈通过螺栓组和弹性机构的一端连接;弹性机构的另一端通过螺栓组和叶片连接;所述的弹性机构使得叶片能够相对于与其连接的变桨轴承内圈或外圈扭转且能够复位。The technical scheme adopted in the present invention is as follows: a pitch connection structure of a wind turbine, including a hub, a pitch bearing, an elastic mechanism and blades; an outer ring or an inner ring of the pitch bearing is connected to the wheel hub through a bolt group; When the outer ring of the bearing is connected with the hub, the inner ring of the pitch bearing is connected with one end of the elastic mechanism through the bolt group. When the inner ring of the pitch bearing is connected with the hub, the outer ring of the pitch bearing is connected with one end of the elastic mechanism through the bolt group. The other end of the elastic mechanism is connected with the blade through a bolt group; the elastic mechanism enables the blade to be twisted and reset relative to the inner or outer ring of the pitch bearing connected to it.
上述的风力发电机组变桨连接结构中,所述弹性机构包括两个法兰和连接筒,两个法兰同轴设置,两个法兰之间通过连接筒和多个筋板连接,法兰与连接筒同轴,多个筋板沿圆周方向均匀布置,筋板的两端分别与两个法兰连接,筋板的内侧面与连接筒外圆柱面连接;两个法兰分别与变桨轴承和叶片连接。In the above-mentioned wind turbine pitch connection structure, the elastic mechanism includes two flanges and a connecting cylinder, the two flanges are coaxially arranged, and the two flanges are connected by a connecting cylinder and a plurality of rib plates, and the flanges are connected with each other. Coaxial with the connecting cylinder, a plurality of rib plates are evenly arranged along the circumferential direction, the two ends of the rib plate are respectively connected with two flanges, the inner side of the rib plate is connected with the outer cylindrical surface of the connecting cylinder; the two flanges are respectively connected with the pitch Bearing and blade connection.
上述的风力发电机组变桨连接结构中,所述的连接筒和筋板采用高分子材料、橡胶或金属材料制成。In the above-mentioned variable-pitch connection structure of the wind turbine, the connection cylinder and the rib are made of polymer material, rubber or metal material.
上述的风力发电机组变桨连接结构中,所述弹性机构包括两个法兰及波纹管,两个法兰之间通过多个双头螺柱连接;所述的波纹管的两端分别与两个法兰连接;两个法兰分别与变桨轴承和叶片连接。In the above-mentioned wind turbine pitch connection structure, the elastic mechanism includes two flanges and a corrugated pipe, and the two flanges are connected by a plurality of double-ended studs; the two ends of the corrugated pipe are respectively connected to the two flanges. One flange connection; two flanges are respectively connected with the pitch bearing and the blade.
上述的风力发电机组变桨连接结构中,所述的法兰的外圆柱面上设有多个连接耳,多个连接耳沿圆周方向均匀布置,连接耳上设有螺栓孔,所述的双头螺柱穿过连接耳的螺栓孔,通过两个螺母固定,两个螺母分别位于连接耳的两侧。In the above-mentioned wind turbine pitch connection structure, the outer cylindrical surface of the flange is provided with a plurality of connection ears, the plurality of connection ears are evenly arranged along the circumferential direction, and the connection ears are provided with bolt holes, and the double connection ears are provided with bolt holes. The head stud passes through the bolt hole of the connecting ear, and is fixed by two nuts, and the two nuts are respectively located on both sides of the connecting ear.
与现有技术相比,本发明的有益效果是:本发明结构简单,成本低,其变桨轴承和叶片之间通过弹性机构间接相连,使得叶片和与之相连的变桨轴承的外圈或内圈之间能够在风载作用下发生相对扭转,增加了系统柔性;这使得在极端工况下,变桨部件受载更小、更平缓,提高了风力发电机组可靠性。Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has a simple structure and low cost, and the pitch bearing and the blade are indirectly connected by an elastic mechanism, so that the outer ring or the outer ring or the outer ring of the pitch bearing connected to the blade is connected with it. Relative torsion can occur between the inner rings under the action of wind load, which increases the flexibility of the system; this makes the load of the pitch components smaller and gentler under extreme working conditions, which improves the reliability of the wind turbine.
附图说明Description of drawings
图1为现有的变桨连接结构示意图。FIG. 1 is a schematic diagram of an existing pitch connection structure.
图2为本发明的实施例1的结构示意图。FIG. 2 is a schematic structural diagram of Embodiment 1 of the present invention.
图3为本发明弹性机构的实施例1的示意图。FIG. 3 is a schematic diagram of Embodiment 1 of the elastic mechanism of the present invention.
图4为本发明弹性机构的实施例2的示意图。FIG. 4 is a schematic diagram of
图5为本发明的实施例2的结构示意图。FIG. 5 is a schematic structural diagram of
具体实施方式Detailed ways
下面结合附图对本发明做进一步的说明。The present invention will be further described below in conjunction with the accompanying drawings.
如图2所示,本发明包括轮毂1,变桨轴承2,弹性机构3和叶片4。所述变桨轴承2的外圈2-1通过螺栓组11和轮毂1固定连接,变桨轴承2的内圈2-2通过螺栓组12和弹性机构3的一端固定连接。也可以采用如图5所示的连接结构:变桨轴承2的内圈2-2通过螺栓组11和轮毂1固定连接;变桨轴承2的外圈2-1通过螺栓组12和弹性机构3的一端固定连接。所述变桨轴承2中间设有滚动体2-3,可以使得外圈2-1和内圈2-2在载荷作用下相对转动。所述弹性机构3另一端通过螺栓组13和叶片4连接固定。As shown in FIG. 2 , the present invention includes a hub 1 , a pitch bearing 2 , an
所述弹性机构3是一种柔性结构,其两端分别设有一个法兰31,用于与变桨轴承2和叶片4相连。所述弹性机构3的轴向刚度大,在风载作用下变形少;扭转刚度相对较小,能够在较大的风载下实现扭转,而在小的风载下自动扭转复位。The
如图3所示,所述弹性机构3包括两个法兰31和连接筒32,两个法兰31同轴设置,两个法兰31之间通过连接筒32和多个筋板33连接,法兰31与连接筒32同轴。多个筋板33沿圆周方向均匀布置,筋板33的两端分别与两个法兰31连接,筋板33的内侧面与连接筒32的外圆柱面连接。两个法兰31分别与变桨轴承2和叶片4连接。所述的连接筒32和筋板33采用高分子材料、橡胶或金属材料制成。弹性机构3的轴向刚度大,很难被拉伸和压缩。另外一方面,弹性机构3具有较弱的扭矩刚度,使得受扭转外载时,弹性机构3会在大载荷下扭转,在小载荷下自动扭转复位。As shown in FIG. 3 , the
所述弹性机构3还可以采用图4中所示的结构。如图4所示,所述的所述弹性机构3包括两个法兰31及波纹管34,两个法兰31同轴设置,两个法兰31之间通过多个双头螺柱35连接,多个双头螺柱沿圆周方向均匀布置。所述的法兰31的外圆柱面上设有四个连接耳311(连接耳311的数量不限于四个,可以少于四个,至少两个,也可以多于四个。),四个连接耳311沿圆周方向均匀布置,连接耳311上设有螺栓孔,所述的双头螺柱35穿过连接耳311的螺栓孔,通过两个螺母36固定,两个螺母36分别位于连接耳311的两侧。所述的波纹管的两端分别与两个法兰连接,波纹管与法兰同轴;两个法兰31分别与变桨轴承2和叶片4连接。两个法兰31通过四个双头螺柱35和螺母36固定连接,轴向刚度大,使其在轴向很难变形。而波纹管34使得弹性机构3的扭转刚度较小。The
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911264431.8A CN110778455B (en) | 2019-12-11 | 2019-12-11 | A wind turbine pitch connection structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911264431.8A CN110778455B (en) | 2019-12-11 | 2019-12-11 | A wind turbine pitch connection structure |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110778455A true CN110778455A (en) | 2020-02-11 |
CN110778455B CN110778455B (en) | 2021-06-29 |
Family
ID=69394508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201911264431.8A Active CN110778455B (en) | 2019-12-11 | 2019-12-11 | A wind turbine pitch connection structure |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110778455B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111963392A (en) * | 2020-07-22 | 2020-11-20 | 明阳智慧能源集团股份公司 | Method for solving zero tooth abrasion of variable pitch bearing of wind generating set |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102852722A (en) * | 2012-09-27 | 2013-01-02 | 北京金风科创风电设备有限公司 | Hub displacement device and lifting method for impellers in direct-driven wind generating set |
WO2013039292A1 (en) * | 2011-09-16 | 2013-03-21 | 대우조선해양 주식회사 | Pitch bearing of wind power generator |
CN103161662A (en) * | 2011-12-13 | 2013-06-19 | 新疆金风科技股份有限公司 | Variable pitch limit structure of wind turbine blade |
KR20130094075A (en) * | 2012-02-15 | 2013-08-23 | 삼성중공업 주식회사 | Apparatus for monitoring loose nut of wind turbine generator |
CN204152734U (en) * | 2014-10-21 | 2015-02-11 | 东方电气集团东方汽轮机有限公司 | A kind of wind power generation unit blade leaf and root structure |
CN106930907A (en) * | 2017-04-27 | 2017-07-07 | 湘电风能有限公司 | A kind of wind turbine pitch variable bearings load shedding device |
CN107165777A (en) * | 2017-07-28 | 2017-09-15 | 北京金风科创风电设备有限公司 | Become oar device and have this wind generating set who becomes oar device |
EP3269974A1 (en) * | 2016-07-12 | 2018-01-17 | Siemens Aktiengesellschaft | Rotor blade pitch arrangement |
CN207500044U (en) * | 2017-11-28 | 2018-06-15 | 北京国电思达科技有限公司 | A kind of device positioned for wind power generation unit blade with installing |
CN207864088U (en) * | 2017-12-04 | 2018-09-14 | 国电联合动力技术有限公司 | A kind of blade root fastenings device of marine tidal-current energy Wind turbines |
CN108953446A (en) * | 2017-05-21 | 2018-12-07 | 建湖县祥阳橡胶制品有限公司 | A kind of metal spring and the dual compound damper of rubber |
CN109854462A (en) * | 2019-03-11 | 2019-06-07 | 中国船舶重工集团海装风电股份有限公司 | A kind of wind-driven generator and its blade pitch device |
CN209484142U (en) * | 2018-12-24 | 2019-10-11 | 常州市常联波纹管有限公司 | An expansion joint compensator that is easy to disassemble |
-
2019
- 2019-12-11 CN CN201911264431.8A patent/CN110778455B/en active Active
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013039292A1 (en) * | 2011-09-16 | 2013-03-21 | 대우조선해양 주식회사 | Pitch bearing of wind power generator |
CN103161662A (en) * | 2011-12-13 | 2013-06-19 | 新疆金风科技股份有限公司 | Variable pitch limit structure of wind turbine blade |
KR20130094075A (en) * | 2012-02-15 | 2013-08-23 | 삼성중공업 주식회사 | Apparatus for monitoring loose nut of wind turbine generator |
CN102852722A (en) * | 2012-09-27 | 2013-01-02 | 北京金风科创风电设备有限公司 | Hub displacement device and lifting method for impellers in direct-driven wind generating set |
CN204152734U (en) * | 2014-10-21 | 2015-02-11 | 东方电气集团东方汽轮机有限公司 | A kind of wind power generation unit blade leaf and root structure |
EP3269974A1 (en) * | 2016-07-12 | 2018-01-17 | Siemens Aktiengesellschaft | Rotor blade pitch arrangement |
CN106930907A (en) * | 2017-04-27 | 2017-07-07 | 湘电风能有限公司 | A kind of wind turbine pitch variable bearings load shedding device |
CN108953446A (en) * | 2017-05-21 | 2018-12-07 | 建湖县祥阳橡胶制品有限公司 | A kind of metal spring and the dual compound damper of rubber |
CN107165777A (en) * | 2017-07-28 | 2017-09-15 | 北京金风科创风电设备有限公司 | Become oar device and have this wind generating set who becomes oar device |
CN207500044U (en) * | 2017-11-28 | 2018-06-15 | 北京国电思达科技有限公司 | A kind of device positioned for wind power generation unit blade with installing |
CN207864088U (en) * | 2017-12-04 | 2018-09-14 | 国电联合动力技术有限公司 | A kind of blade root fastenings device of marine tidal-current energy Wind turbines |
CN209484142U (en) * | 2018-12-24 | 2019-10-11 | 常州市常联波纹管有限公司 | An expansion joint compensator that is easy to disassemble |
CN109854462A (en) * | 2019-03-11 | 2019-06-07 | 中国船舶重工集团海装风电股份有限公司 | A kind of wind-driven generator and its blade pitch device |
Non-Patent Citations (1)
Title |
---|
王晓暄等著: "《新能源研究与应用系列 新能源概述 风能与太阳能》", 31 July 2015, 西安电子科技大学出版社 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111963392A (en) * | 2020-07-22 | 2020-11-20 | 明阳智慧能源集团股份公司 | Method for solving zero tooth abrasion of variable pitch bearing of wind generating set |
Also Published As
Publication number | Publication date |
---|---|
CN110778455B (en) | 2021-06-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090324416A1 (en) | Wind turbine blades with multiple curvatures | |
US9777704B2 (en) | Rotor blade assembly for a wind turbine having variable-length blade bolts | |
CN101915211B (en) | Wind turbine generator system and pitch system applied to same | |
CN113217272B (en) | Lift-drag composite vertical axis wind turbine for wind-solar integrated power generation system | |
CN110778455B (en) | A wind turbine pitch connection structure | |
CN113153623A (en) | Wind wheel device and wind generating set | |
JP6954739B2 (en) | Rotor for generator | |
US20150056078A1 (en) | Pitch bearing assembly with stiffener | |
CN205559157U (en) | Umbrella -type distributes from seeking wind fan blade and seeking wind aerogenerator certainly | |
CN110296050A (en) | A kind of wind power generation plant | |
CN107100790B (en) | Adaptive propeller structure of a wind turbine | |
CN203214234U (en) | Double-impeller wind turbine | |
CN202756176U (en) | Vertical-axis wind turbine with speed-adjustable wind turbine blades | |
CN219344877U (en) | An Improved Horizontal Axis Wind Turbine | |
CN204140291U (en) | The impeller of wind power generating set and wind power generating set | |
CN111237130A (en) | Self-adaptive double-rotation-direction wind power generation device | |
CN201865842U (en) | Mechanical pneumatic type propeller pitch adjusting mechanism of small-sized wind driven generator group | |
CN212690239U (en) | Structure for improving radial rigidity of closed annular or shell-shaped component | |
CN201874759U (en) | Enhanced hub of wind generating set | |
CN207526646U (en) | A kind of small-sized trunnion axis wind energy conversion system axial support structure | |
CN108386326B (en) | Amplitude modulation type wind driven generator | |
CN107740751B (en) | Axial supporting structure of small horizontal axis wind turbine | |
CN201963475U (en) | Circumferential pulling rope structure for vertical axis wind power generator | |
CN109751189A (en) | A wind turbine and its blades | |
CN107013412A (en) | A kind of small-size vertical axis wind turbine and its electricity-generating method of drive blade |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CP03 | Change of name, title or address |
Address after: 411100 No.68 Ji'an Road, Yuetang District, Xiangtan City, Hunan Province Patentee after: Hunan Xinglan Wind Power Co.,Ltd. Country or region after: China Patentee after: XIANGTAN ELECTRIC MANUFACTURING Co.,Ltd. Address before: No. 68 Ji'an Road, Yuetang District, Xiangtan City, Hunan Province Patentee before: XEMC WINDPOWER Co.,Ltd. Country or region before: China Patentee before: XIANGTAN ELECTRIC MANUFACTURING Co.,Ltd. |
|
CP03 | Change of name, title or address |