Wicket gate
    41.
    发明授权
    Wicket gate 失效
    小门

    公开(公告)号:US5228830A

    公开(公告)日:1993-07-20

    申请号:US627341

    申请日:1990-12-14

    申请人: Joseph Pastore

    发明人: Joseph Pastore

    IPC分类号: F03B3/18

    摘要: This invention relates to an improvement in an apparatus for directing the flow of water from the penstock to the vanes of a hydraulic turbine, generally referred to as a wicket gate, and a method for making the improved wicket gate. The improved wicket gate comprises a rotatable planar body made either of a high-strength plastic material or metal, onto which a viscoelastic material is affixed. The improvement lies in the application of the viscoelastic material to the rotatable planar body in such a way that the viscoelastic material becomes an integral component of the rotatable planar body. This improvement extends the maintenance life cycle by reducing marine growth, erosion and pitting caused by cavitation.

    摘要翻译: 本发明涉及用于将水从水管引导到水轮机的叶片(通常称为小门)的装置的改进以及用于制造改进的小门的方法。 改进的门板门包括由高强度塑料材料或金属制成的可旋转平面体,粘合有粘弹性材料。 改进在于将粘弹性材料应用于可旋转平面体,使得粘弹性材料成为可旋转平面体的整体部件。 这种改进通过减少由气蚀导致的海洋生长,侵蚀和点蚀延长了维护生命周期。

    Erosion shield for a wind turbine blade

    公开(公告)号:US09752444B2

    公开(公告)日:2017-09-05

    申请号:US14365646

    申请日:2012-12-05

    IPC分类号: F03D1/06 F01D5/28

    摘要: An erosion shield for a wind turbine blade is described, the erosion shield having a plurality of layers of erosion resistant material. The layers of erosion resistant material have an adhesive bond strength between adjacent layers less than the cohesive tensile strength of the layers, such that the outer layers of erosion resistant material are arranged to peel away or delaminate from the erosion shield under the action of the wind once the particular layer is ruptured or eroded. This dynamic removal of the outer layers of the erosion shield provides for increased shield lifetime, and a reduction in the maintenance operations required for a wind turbine blade having such an erosion shield.