Abstract

An underwater power plant for arrangement in a water current includes at least two rotatable stations and at least one endless traction member connected to the rotatable stations. The at least one endless traction member is configured to rotate the at least two rotatable stations as the endless traction member moves in its lengthwise direction. At least one asymmetric foil is connected to the at least one endless traction member and configured to move the endless traction member in its lengthwise direction as the water current impacts the asymmetric foil. The at least one asymmetric foil has an upper camber side and a lower camber side. The upper camber side is facing in a direction outwards of the at least one endless traction member and the lower camber side is facing in a direction inwards of the at least one endless traction member.

IPC Classes  ?

• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type
• F03B 13/22 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using wave energy using the flow of water resulting from wave movements, e.g. to drive a hydraulic motor or turbine

Abstract

An underwater power plant (1) for arrangement in a water current (vc), the underwater power plant (1) comprising at least two rotatable stations (3,4) and at least one endless traction member (2a, 2b) connected to the rotatable stations (3,4). The at least one endless traction member (2a, 2b) is configured to rotate the at least two rotatable stations (3,4) as the endless traction member (2a; 2b) moves in its lengthwise direction (T). At least one asymmetric foil (5) is connected to the at least one endless traction member (2a, 2b) and configured to move the endless traction member (2a, 2b) in its lengthwise direction (T) as the water current (vc) impacts the asymmetric foil (5). The at least one asymmetric foil (5) comprises an upper camber side (35) and lower camber side (36). The upper camber side (35) of at least one foil (5) is facing in a direction outwards (O) of the at least one endless traction member (2a, b) and the lower camber side (36) of at least one foil (5) is facing in a direction inwards (I) of the at least one endless traction member (2a, b).

IPC Classes  ?

• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type

Abstract

An underwater power plant (1) for arrangement in a water current (vc), the underwater power plant (1) comprising at least two rotatable stations (3,4) and at least one endless traction member (2a, 2b) connected to the rotatable stations (3,4). The at least one endless traction member (2a, 2b) is configured to rotate the at least two rotatable stations (3,4) as the endless traction member (2a; 2b) moves in its lengthwise direction (T). At least one asymmetric foil (5) is connected to the at least one endless traction member (2a, 2b) and configured to move the endless traction member (2a, 2b) in its lengthwise direction (T) as the water current (vc) impacts the asymmetric foil (5). The at least one asymmetric foil (5) comprises an upper camber side (35) and lower camber side (36). The upper camber side (35) of at least one foil (5) is facing in a direction outwards (O) of the at least one endless traction member (2a, b) and the lower camber side (36) of at least one foil (5) is facing in a direction inwards (I) of the at least one endless traction member (2a, b).

IPC Classes  ?

• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type

Abstract

A method for exploiting the energy of a water current by means of an energy plant (1) which is placed in the water current (16) is described, the energy plant (1) including at least one rope (2, 4) extending around at least two turning stations (8, 10), and carrying at least one at least partially submerged foil (12) which is approximately symmetrical around its chord (42), and the velocity and direction (Vc) of flow of the water together with the moving speed and direction (Vs) of the foil giving a resulting water velocity and direction (Vr1, Vr2) acting on the foil (12), the method including: - pivoting the foil (12) until it has a desired angle of attack (a) to the resulting water direction (Vr1) when the foil is being displaced co-currently; and - pivoting the foil (12) until it has a desired angle of attack (a) to the resulting water direction (Vr2) when the foil (12) is being displaced counter-currently, the angle of attack being the same or different co-currently and counter-currently. An energy plant (1) for use in practising the method is described as well.

IPC Classes  ?

• F03B 13/26 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using tide energy
• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type

Abstract

A device of a self-adjusting foil suspension (36) in which a foil (34) is placed in a fluid flow (2), typically a tidal flow, and in which the foil (34) is rotatable around a rotational axis (42), and in which the foil (34) is connected by means of an arm (40) to a track (4), and in which the arm (40) is rotatable around the rotational axis (42) and rotatably connected to the track (4) around a suspension axis (48) at a radial distance from the rotational axis (42), the suspension axis (48) being parallel to the rotational axis (42).

IPC Classes  ?

• F03B 9/00 - Endless-chain type machines or engines
• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type
• F03D 5/02 - Other wind motors the wind-engaging parts being attached to endless chains or the like

Abstract

A wave power plant (1), wherein a submerged foil (4) is pivotally supported about a body (2), wherein the foil (4) is structured in a manner allowing it to be set into an oscillating, pivotal motion about the body (2), wherein the body (2) is pretensioned and is provided with a plurality of foils (4), and wherein a power engine (18), which is connected between the foil (4) and the body (2), is structured in a manner allowing it to deliver power by means of the pivotal motion of the foil (4).

IPC Classes  ?

• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type