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Method for seafastening of wind turbine towers in an upright position

IP.com Disclosure Number: IPCOM000202166D
Publication Date: 2010-Dec-07
Document File: 4 page(s) / 1M

Publishing Venue

The IP.com Prior Art Database

Related People

Adam Weeks: CONTACT

Abstract

Normally wind turbine towers are transported on the deck of a vessel, either in sections or as a whole tower. Transporting them in an upright position minimizes the amount of deck space used. However, the center-of-gravity then becomes high and makes seafastening (securing the towers to the deck) challenging. The seafastening must withstand greater forces due to the increased wind loads on the towers and the accelerations from vessel movements. To address these challenges, wind turbine towers can be placed on the tanktop level of a vessel (i.e., below the deck) in upright positions. Seafastening structure may be located on the tanktop level. The towers can extend through the deck, which may also have some structure for supporting the towers. Thus, a tower may be supported at two locations: the tanktop level and deck level. This distributes loads from the tower in a more optimized manner, thereby enabling lighter seafastening. Additionally, the seafastening may be done faster due to a simplified construction.

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Title:

Method for seafastening of wind turbine towers in an upright position

Abstract:

Normally wind turbine towers are transported on the deck of a vessel, either in sections or as a whole tower. Transporting them in an upright position minimizes the amount of deck space used. However, the center-of-gravity then becomes high and makes seafastening (securing the towers to the deck) challenging. The seafastening must withstand greater forces due to the increased wind loads on the towers and the accelerations from vessel movements.

To address these challenges, wind turbine towers can be placed on the tanktop level of a vessel
(i.e., below the deck) in upright positions. Seafastening structure may be located on the tanktop level. The towers can extend through the deck, which may also have some structure for supporting the towers. Thus, a tower may be supported at two locations: the tanktop level and deck level. This distributes loads from the tower in a more optimized manner, thereby enabling lighter seafastening. Additionally, the seafastening may be done faster due to a simplified construction. The images below illustrate this principle in further detail.

General Arrangement Tower support

at deck level

Tower support at tanktop level


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