Heave plate with improved characteristics

B - Operations – Transporting – 63 – B

Patent

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Details

B63B 39/00 (2006.01) F03B 13/18 (2006.01)

Patent

CA 2651999

Apparatus embodying the invention include a damping plate attached to1 the submerged end of a spar-like element floating in a body of water. The spar like element tends to move up and down in a vertical direction in response to passing waves. The damping plate has a pair of oppositely facing surfaces extending transversely to the vertical direction of the movement of the spar-like element and vertical structures ("lips") mounted on the oppositely facing surfaces for increasing the effective mass of water pushed during movement of the damping plate through the water. Damping plates with lips, as per the invention, may be used in wave energy converters to control the relative motion between the spar- like element and a float to increase the energy produced. Damping plates with lips, as per the invention, may be used to effectively dampen the motion of an offshore platform to which the spar-like element is fixedly attached.

L'invention concerne un appareil qui comprend une plaque anti-pilonnement reliée à l'extrémité immergée d'un élément de type pylône flottant dans un plan d'eau. L'élément de type pylône tend à se déplacer vers le haut et vers le bas dans le sens vertical en réponse au passage des vagues. La plaque anti-pilonnement comprend une paire de surfaces opposées qui s'étendent de manière transversale au sens vertical du mouvement de l'élément de type pylône et des structures verticales ("lèvres") montées sur les surfaces opposées permettant d'augmenter la masse effective de l'eau poussée pendant le mouvement de la plaque anti-pilonnement dans l'eau. Les plaques anti-pilonnement équipées de lèvres de l'invention peuvent être utilisées dans des convertisseurs d'énergie des vagues pour commander le mouvement relatif entre l'élément de type pylône et un flotteur afin d'augmenter l'énergie produite. Les plaques anti-pilonnement équipées de lèvres peuvent également être utilisées pour amortir efficacement le mouvement d'une plate-forme maritime à laquelle l'élément de type pylône est fixement attaché.

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