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US 12,669,109 B2Granted
Anti-oscillation tool for wind turbine blades
AssigneeVestas Wind Systems A/S
InventorsPayam Javadian, Balachandar Mahalingam, Dhineswaran Loganathan
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Abstract
A tool (14) for reducing vibrations in wind turbine blades at scheduled standstill for example during turbine installation or service, the tool comprising an elongate flexible sock-like sleeve (16) for fitting over the blades (10) having an airflow-disrupting function and a guard (24) of semi-rigid material provided at an edge of the sleeve which overlies the blade trailing edge into which are received aerodynamic enhancing features such as serrations (20).
Claims32
A device for fitting to a wind turbine blade during turbine standstill to reduce risk of blade oscillation comprising:
- an elongate flow-disrupting flexible sleeve for fitting over a blade tip and extending part-way along a length of the blade, the sleeve having a tip end which in use overlies the blade tip, and an open end, and a first edge region which in use overlies a blade trailing edge, and
- an elongate guard provided on the sleeve at the first edge region of the sleeve configured to overlie or receive the blade trailing edge,
- wherein the elongate guard is of generally U-shaped section having a pair of sides with an opening therebetween into which a part of the blade trailing edge is to be received, wherein the pair of sides have lower edges which receive the blade trailing edge, and wherein the lower edges are formed with inwardly protruding regions.
Dependencies are inferred from the claim text.