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Temporary enclosure (1) for at least a part of a rotor blade connected to a wind power plant having a tower and a rotor top part, the enclosure (1) comprising;• A framework (2)• One or more walls (3)• a roof (4); said roof extends from said wall towards said blade;said framework (2) stretching said walls (3) said that a volume is enclosed below the roof (4) wherein said framework (2) comprising one or more frame parts (5), a connection (6) for connection of the one or more frame parts (5) and an activation means (7) for activation a change in the framework (2) whereby the volume enclosed by the enclosure (1) change.

本实用新型提供了一种风电叶片以及风力发电机组，该风电叶片包括叶片主体以及拉索组件，拉索组件包括拉索和紧固器，紧固器抵接于叶片主体的外侧，拉索沿着叶片主体的周向缠绕于叶片主体的外侧，拉索的两端固定于紧固器上。本实用新型的风电叶片可以通过在叶片主体的叶根增设拉索组件，使拉索组件的拉索环向紧固叶根，可在分层隐患出现前提高其承载能力、降低分层风险；也可在分层初期遏制损伤扩展，延长风电叶片的使用寿命。

本申请公开了一种高速轴风轮锁紧装置及风力发电机，其中，高速轴风轮锁紧装置包括安装座、锁紧结构、锁销和摩擦部，锁紧结构设于安装座上，锁紧结构的一侧开设有刹车槽，刹车槽用于容纳刹车盘的至少部分，且允许刹车盘在刹车槽内转动，锁紧结构上还开设有至少两个锁孔，锁孔均穿过刹车槽；至少两个锁销与锁孔对应设置，并分别可拆卸的设于锁紧结构上；摩擦部夹设于锁紧结构与安装座之间，用于增加锁紧结构与安装座之间的摩擦力；锁销具有锁死状态和解锁状态，在锁死状态下，至少一个锁销从锁孔穿入刹车槽，并穿过刹车盘上的销孔；在解锁状态下，所有锁销均脱离锁孔。本申请提供的技术方案，可以提高高速轴锁紧装置锁紧可靠性。

本发明公开了一种水平轴风力机叶片的冰霜检测及除冰方法，包括如下步骤：获取风机叶片正常状态时的工作数据，进行分析并存储，作为对比数据；获取指定时间段内的外部赋存数据，并结合风力机的设计数据求解风力机的实时工作数据；将实时工作数据与对比数据进行比较，判定风力机工作时是否存在额外负载；若存在额外负载，则结合外部赋存数据判定额外负载是否为冰霜负载；若额外负载为冰霜负载，则对叶片进行除冰操作。本发明可快速有效判定风力机叶片是否存在冰霜负载，并进行有效除冰，提高能源利用的转化率。

Embodiments of the present disclosure relate to a device and a method for recognising the attachment of ice to a structure (110) of a construction (100). The device comprises at least one acceleration sensor (10) that is arranged and configured to detect an acceleration on the structure; an evaluation device (30) for determining at least one natural frequency of the structure (110) from the detected acceleration, wherein the evaluation device (30) is configured to indirectly detect attachment of ice to said structure (110) on the basis of the determined natural frequency of the structure (110); and at least one ice detection sensor (20, 20a, 20b) that is arranged and configured to directly detect attachment of ice at a position on said structure (110), wherein the evaluation device (30) combines the indirect detection of the attachment of ice and the direct detection of the attachment of ice.

一种用于风机叶片整体吊装维修的支撑设备，包括底座，所述底座的顶部固定连接有重型液压油缸，所述重型液压油缸的伸缩端固定连接有风机叶片放置板。本实用新型通过电机驱动双向往复丝杆进行转动的力与调节装置中的限位导向杆、位移滑块和转动杆等组件相互配合，实现了当风机叶片需要维修时，反向驱动电机使双向往复丝杆进行反向转动，风机叶片放置板即可带动风机叶片向下位移的作用，达到了调节风机叶片的高度的效果，便于维修，使得风机叶片在吊装或维修过程中能够精确定位，避免了人工调整可能带来的误差，维修人员可以快速定位和调整叶片的位置，减少了等待和准备时间。

本实用新型涉及风力发电装置维护设备领域，尤其涉及可调节支撑的风力发电装置维护设备，包括维护工作台，维护工作台包括有第一工作台和第二工作台，第一工作台和第二工作台顶面的中心位置均设有位移座，位移座的前端旋转连接有夹持板，位移座和夹持板的相交处分别设有第一齿轮和第二齿轮，第一齿轮和第二齿轮相互啮合，第一齿轮的一侧位于位移座的外端面设有第二旋钮，第一工作台和第二工作台顶面的相交处分别设有支撑定位架和插销机构；本实用新型通过传动齿轮使得第一工作台和第二工作台在支撑架的内侧进行旋转收纳，而当第一工作台和第二工作台持平时，通过插销机构对第一工作台和第二工作台进行支撑固定。

The present disclosure relates to a wind turbine blade comprising a leading-edge heating element extending along at least a portion of the leading edge of the wind turbine blade, the leading-edge heating element being configured for deicing a corresponding portion of an exterior surface of the leading edge; a first plurality of heating strips, each heating strip of the first plurality of heating strips extending in a substantially spanwise direction of the wind turbine blade, the first plurality of heating strips forming part of a first shell portion of the wind turbine blade, wherein the first shell portion is the pressure side shell portion or the suction side shell portion, the first plurality of heating strips being spaced apart from one another and from the leading-edge heating strip in a chordwise direction, each heating strip having a first end and a second end, the first end being closer to the tip end than the second end, each heating strip comprising carbon-fibre yarn and/or tow material; and a power source configured to provide electrical power to each of the first plurality of heating strips in order to generate heating in said each strip, said heating being generated by the carbon-fibre yarn and/or tow material. A method for manufacturing the wind turbine blade and a method of deicing such a wind turbine blade are also provided. Further, a heating strip is provided.

本发明涉及风机发电领域，更具体地说，它涉及一种加固型风机变桨轴承，包括轴承内圈和轴承外圈，所述轴承内圈的上表面均匀开设有内圈固定孔，所述轴承内圈和轴承外圈相互靠近的一侧开设有两组转动槽，所述转动槽的内侧转动连接有滚珠，所述轴承内圈上设置有加固机构，且加固机构用于加固轴承内圈和轴承外圈的连接并提高稳定性，所述加固机构包括设置于所述内圈固定孔中的螺栓，以及与所述螺栓抵触驱动的加固组件，所述轴承外圈上开设有加固槽，且所述加固槽开设在轴承外圈靠近轴承内圈一侧的中部，本发明解决了当前变桨轴承的轴承内圈和轴承外圈连接不够稳定，以及无法根据滚珠的使用情况进行自动加注润滑油的技术问题。

The present disclosure relates to methods for installing and uninstalling devices for reducing vibrations in wind turbines and to such devices. More particularly, the present disclosure relates to methods for installing and uninstalling devices for reducing vortex induced vibrations and stall induced vibrations when the wind turbine is parked, especially during wind turbine installation and/or maintenance, and to such devices. A method for installing a vibration mitigating device for mitigating wind turbine vibrations on a wind turbine blade of a parked wind turbine is provided. The method comprises moving the vibration mitigating device at least partially around the wind turbine blade using one or more drones; and securing the vibration mitigating device to the wind turbine. In some examples, the vibration mitigating device may be carried to the wind turbine blade using the one or more drones.