DE20000260U1 - Arrangement for generating energy from waves and currents in water - Google Patents

Description

[Utility model application]

PA Dipl.-Ing. K.H.Voß Kruseshofer Str. 17036 Neubrandenburg Tel. 0395-7077271 Fax 7077272 AZ G24-99

[Name of the invention] 10 Arrangement for generating energy from waves and currents in

Waters

[Description]

The innovation concerns an arrangement for generating energy from waves and currents in bodies of water, particularly in the sea or on the sea coast.

[State of the art]

The energy contained in ocean waves and currents is considerable. However, converting it into usable energy is fraught with problems similar to wind energy. The energy is generally not available evenly and the energy density is low. In addition, there is corrosion due to the salty water and the heavy growth slows down moving elements. Furthermore, securing it in the shore area or on the seabed requires a great deal of effort in order to safely withstand storms.

So far, a large number of proposed solutions have been made available, which include a variety of approaches.
To use wave motion, for example, the rising/falling water is converted into a rotary movement of generators using mechanical elements or compression of air. DE OS 940721 proposes a device for using the tidal range using a container on the seabed, which converts the resulting air pressure differences into an energy unit. According to DE OS 4134692, the air compression is achieved using floating bodies that are connected to the piston rods of a piston compressor. However, such systems are rarely used in practice because the technical effort is high and the performance is low. This also applies to the solution according to DE OS 4230789, in which waves flowing over surf plates, including wind, drive a rotor.

Proposals for combining different energy generation devices are also known. A solution for the combination is described in DE OS 2928 648, which is based

but on a floating body. Combinations have also only been used rarely in practice, as the effort involved is unfavourable compared to the benefit.

[Task of the invention]

The aim of the innovation is therefore to improve the economic efficiency of plants of this type by using all water movements to generate energy and enabling additional uses.

The innovation proposes according to claim 1 that the frame is made of
a lower frame on the bottom of the water, an upper frame above the highest water level and vertical supports connecting them. In this frame, rotors and cavities for

energy generation and at the same time use the frame as
to be used as a foundation for hydraulic engineering.

Special embodiments are set out in the subclaims.
The multiple use according to the invention enables profitable operation. The use of wave and current energy in the respective horizons increases the energy yield. The application is particularly advantageous in the shallow, open sea or on the coast, in preferred locations for wind turbines and coastal protection structures.

[Examples]

The innovation will be explained below using an example
become.

Fig. 1 shows the overall arrangement in side view,
Fig. 2 in top view.

The frame consists of a rectangular lower frame on the bottom of the water, a similar upper frame above the highest
Water level and these connecting vertical supports at the
Corners. Frames and supports are made of concrete and

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connected to the seabed. Vertical axes or columns are held by additional cross braces. Water wheels are arranged on these, one above the other, horizontally. The supports and axes or columns have vertical cavities.

Energy is generated using known means. The fluctuating water level in the cavities creates a positive or negative pressure, which is stored as compressed air using valves. The rotating movement of the water wheels also generates compressed air, which is fed into a common storage tank. From there, it is used when needed, for example, or to generate electricity.

Modifications to the energy generation modules are possible depending on the existing technology or to adapt them to the respective location.

The frame also serves as a foundation for a wind turbine. For other proposed uses, such as coastal fortifications or pier heads, modifications to the design will be made for the specific purpose.

Claims (8)

1. Arrangement for generating energy from waves and currents in waters, with a frame fixed to the bottom of the water, cavities for compression work and rotors, characterized in that (a) that the frame consists of a lower frame at the bottom of the water body, an upper frame above the highest water level and vertical supports connecting them, b) rotors and/or cavities for energy generation are arranged in this frame c) and the frame is at the same time a foundation for hydraulic structures. 2. Arrangement according to claim 1, characterized in that the vertical supports are hollow, have a water inlet and outlet and, at the top, a connection via valves to a compressed air reservoir for energy generation. 3. Arrangement according to claim 1 and 2, characterized in that on the vertical, optionally additional supports, one above the other, separately mounted, horizontally lying rotors are arranged, which are connected to generators or compressed air generators. 4. Arrangement according to claims 1 to 3, characterized in that the rotors are each connected independently of one another via cams to an air or liquid pump. 5. Arrangement according to claims 1 to 4, characterized in that the rotors are adapted to the flow conditions of the arrangement plane by corresponding rotor blades. 6. Arrangement according to claims 1 to 5, characterized in that all individual generators for compressed air/pressure fluid are connected to a central storage unit. 7. Arrangement according to claim 1, characterized in that the frame is simultaneously a foundation for wind turbines in coastal areas. 8. Arrangement according to claim 1, characterized in that the frame is simultaneously a coastal protection structure.