Temporary damper assembly
AssigneeSiemens Gamesa Renewable Energy A/S
InventorsJoris Daamen, Kristian Fjordgaard, Morten Fogh Jacobsen, Asger Holck Nielsen, Soeren Markkilde Pedersen
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Abstract
A temporary damper assembly for use during vertical storage and/or vertical transport of a tower includes a liquid damper tuned to the natural frequency of vibration of the tower; a tower cover realized to cover an annular upper opening of the tower during storage and/or transport; a mounting interface configured to suspend the liquid damper from the annular upper opening of the tower; and a load transfer interface for the transfer of loads between the liquid damper and the tower. A method of suppressing vortex-induced vibration in a tower during vertical storage and/or vertical transport of the tower is also provided.
Claims16
A temporary damper assembly for use during vertical storage and/or vertical transport of a tower, the damper assembly comprising:
- a liquid damper tuned to a natural frequency of vibration of the tower;
- a tower cover configured to cover an annular upper opening of the tower during storage and/or transport;
- a mounting interface configured to suspend the liquid damper from the annular upper opening of the tower, the mounting interface comprising a number of radial arms;
- and
- a load transfer interface for a transfer of loads between the liquid damper and the tower;
- wherein the liquid damper is positioned within an interior of the tower.
A method of suppressing vortex-induced vibration in a tower during vertical storage and/or vertical transport of the tower, the method comprising:
- determining a natural frequency of vibration of the tower;
- tuning a liquid damper to the natural frequency;
- preparing a temporary damper assembly by attaching the tuned liquid damper to a tower cover and providing a load transfer interface for a transfer of loads between the liquid damper and the tower, wherein the preparing the temporary damper assembly comprises selecting elements of a mounting interface on a basis of a diameter of the tower;
- mounting the temporary damper assembly at an upper end of the tower prior to vertical storage and/or vertical transport of the tower so that the tuned liquid damper is located within an interior of the tower during the vertical storage and/or vertical transport;
- and
- attaching a selected arc segment to each of a plurality of radial arms of the mounting interface and/or mounting a plurality of selected brackets onto shoes on an exterior of the liquid damper.
Dependencies are inferred from the claim text.