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公开(公告)号：US20240271595A1
公开(公告)日：2024-08-15
申请号：US18565156
申请日：2022-06-08
CPC分类号： F03D1/0664 , F03D7/0224 , F05B2260/507 , F05B2270/60
摘要： A pitch actuator for a wind turbine pitch system, the pitch actuator having an actuator rod, a drive end of which is defined by a clevis fork arrangement having first fork member and a second fork member that extend in a direction along a rod axis and terminate at a tip end. The first and second fork members define respective clevis openings for receiving a clevis pin therethrough, said clevis openings each having an opening perimeter profile comprising: a first perimeter section defined by a leading circular arc that is centred on the rod axis and oriented in the direction of the tip end of the fork members, the circular arc defining a nominal radius and a central angle of less than 120 degrees, and second and third flared perimeter sections that flank respective sides of the first perimeter section, each of which define an enlarged clearance zone with respect to at least part of an imaginary circle defined by the nominal radius of the first perimeter section. A benefit of the invention is that the enlarged clearance zones defined by the flared perimeter sections create an area where there is no contact between the perimeter of the openings and the outer surface of the clevis pin. This provides a stress relieving function since deformation of the openings in use, due to force applied along the axis of the actuator rod, does not create a point of stress combined with sliding or rubbing movement with the sides of the clevis pin, thereby reducing wear and fatigue. The invention extends to a pitch system including such a pitch actuator and a wind turbine incorporating such a pitch system.
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公开(公告)号：US08851840B2
公开(公告)日：2014-10-07
申请号：US13060488
申请日：2009-08-28
CPC分类号： F03D1/0683 , F03D1/0675 , F03D7/0232 , F05B2240/31 , F05B2270/506 , F05B2270/60 , Y02E10/721 , Y02E10/723
摘要： The invention relates to a wind turbine blade with devices for modifying the aerodynamic surface or shape of the blade. The position and movement of these devices are controlled by a pneumatic actuator powered by pressure from a pressure chamber connected to the actuator via a valve system controlling the powering. The valve system in return is operated by a control unit conveying control signals to the valve system via a signal communication pathway. The communication pathway may comprise a power link or pressure tubes with a liquid or a gas. In one embodiment the gas used is of a lower molecular weight than 28.9 kg/kmol and thereby lower than air, whereby the speed of the pressure signals being sent from the control unit is increased and thereby the operational speed of the aerodynamic devices. The invention further relates to a wind turbine comprising a tower, a nacelle mounted to one end of the tower, and a rotor with at least one wind turbine blade according to the above.
摘要翻译： 本发明涉及具有用于改变叶片的空气动力学表面或形状的装置的风力涡轮机叶片。 这些装置的位置和运动由气动致动器控制，气动致动器由压力室通过控制供电的阀门系统与致动器相连。 作为回报的阀门系统由控制单元操作，该控制单元经由信号通信路径向阀系统传送控制信号。 通信路径可以包括具有液体或气体的动力连接或压力管。 在一个实施方案中，使用的气体的分子量低于28.9kg / kmol，从而低于空气，由此从控制单元发送的压力信号的速度增加，从而增加了空气动力学装置的操作速度。 本发明还涉及一种风力涡轮机，其包括塔架，安装在塔架一端的机舱和具有根据上述的至少一个风力涡轮机叶片的转子。
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3.发明授权Servo-controlled extender mechanism for extendable rotor blades for power generating wind and ocean current turbines 失效用于发电风力和洋流涡轮机的可扩展转子叶片的伺服控制扩展器机构公开(公告)号：US07581926B1
公开(公告)日：2009-09-01
申请号：US11084640
申请日：2005-03-18
IPC分类号： F03D7/04
CPC分类号： F03D7/0236 , F05B2240/30 , F05B2270/60 , Y02E10/721 , Y02E10/723 , Y10T74/18096 , Y10T74/18808 , Y10T74/1967
摘要： A power generating system wherein a turbine is mounted on top of a tower or tethered underwater. The turbine includes a rotor having a main blade connected to a rotor hub and an extender section. An adjusting device positions the extender blade between a retracted position within the main blade and to an extended position to expose more or less of the rotor to the fluid flow. The adjusting device includes a servo-controlled rack and pinion mechanism that converts rotation of the pinion by a servomotor into linear motion of the extender blade. A generator is connected to the turbine for generating electrical energy.
摘要翻译： 一种发电系统，其中涡轮机安装在塔顶或水下系绳上。 涡轮机包括具有连接到转子毂和扩展器部分的主叶片的转子。 调节装置将扩展器叶片定位在主叶片内的缩回位置和延伸位置之间，以将更多或更少的转子暴露于流体流动。 调节装置包括伺服控制齿条和小齿轮机构，其通过伺服电动机将小齿轮的旋转转换成延伸器叶片的线性运动。 发电机连接到涡轮机以产生电能。
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4.发明申请WIND TURBINE BLADE WITH DEVICE FOR MODIFYING THE BLADE AERODYNAMIC SURFACE 审中-公开风力涡轮叶片用于修改叶片动态表面的装置公开(公告)号：US20110229320A1
公开(公告)日：2011-09-22
申请号：US13060746
申请日：2009-08-28
IPC分类号： F03D7/00
CPC分类号： F03D1/0683 , F03D1/0675 , F03D7/0232 , F05B2240/31 , F05B2270/506 , F05B2270/60 , Y02E10/721 , Y02E10/723
摘要： The invention further relates to a wind turbine blade comprising at least one device for modifying the aerodynamic surface or shape of the blade. The device is connected to a drive system for operating the device, and the drive system is arranged such that it is drivable by a pressure difference across the drive system. In one embodiment of the invention the wind turbine blade further comprises a number of conduits guiding a flow of air between an outer surface of the wind turbine blade and the drive system. The invention further relates to a method for operating an aerodynamic device for modifying the aerodynamic surface or shape of a wind turbine blade comprising the steps of exploiting a pressure difference across a drive system, inside or around the wind turbine blade in providing operating power for operating said device.
摘要翻译： 本发明还涉及一种风力涡轮机叶片，其包括用于改变叶片的空气动力学表面或形状的至少一个装置。 该设备连接到用于操作设备的驱动系统，并且驱动系统被布置成使得其可以通过驱动系统上的压差而驱动。 在本发明的一个实施例中，风力涡轮机叶片还包括导引风力涡轮机叶片的外表面与驱动系统之间的空气流的多个导管。 本发明还涉及一种用于操作用于改变风力涡轮机叶片的空气动力学表面或形状的空气动力学装置的方法，包括以下步骤：利用驱动系统在风力涡轮机叶片内部或周围的压力差，以提供操作功率 说装置。
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公开(公告)号：US20110217167A1
公开(公告)日：2011-09-08
申请号：US13060488
申请日：2009-08-28
IPC分类号： F03D7/00
CPC分类号： F03D1/0683 , F03D1/0675 , F03D7/0232 , F05B2240/31 , F05B2270/506 , F05B2270/60 , Y02E10/721 , Y02E10/723
摘要： The invention relates to a wind turbine blade with devices for modifying the aerodynamic surface or shape of the blade. The position and movement of these devices are controlled by a pneumatic actuator powered by pressure from a pressure chamber connected to the actuator via a valve system controlling the powering. The valve system in return is operated by a control unit conveying control signals to the valve system via a signal communication pathway. The communication pathway may comprise a power link or pressure tubes with a liquid or a gas. In one embodiment the gas used is of a lower molecular weight than 28.9 kg/kmol and thereby lower than air, whereby the speed of the pressure signals being sent from the control unit is increased and thereby the operational speed of the aerodynamic devices. The invention further relates to a wind turbine comprising a tower, a nacelle mounted to one end of the tower, and a rotor with at least one wind turbine blade according to the above.
摘要翻译： 本发明涉及具有用于改变叶片的空气动力学表面或形状的装置的风力涡轮机叶片。 这些装置的位置和运动由气动致动器控制，气动致动器由压力室通过控制供电的阀门系统与致动器相连。 作为回报的阀门系统由控制单元操作，该控制单元经由信号通信路径向阀系统传送控制信号。 通信路径可以包括具有液体或气体的动力连接或压力管。 在一个实施方案中，使用的气体的分子量低于28.9kg / kmol，从而低于空气，由此从控制单元发送的压力信号的速度增加，从而增加了空气动力学装置的操作速度。 本发明还涉及一种风力涡轮机，其包括塔架，安装在塔架一端的机舱和具有根据上述的至少一个风力涡轮机叶片的转子。
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