WO2002044557A1

WO2002044557A1 - Hydraulic power plant

Info

Publication number: WO2002044557A1
Application number: PCT/DE2001/004444
Authority: WO
Inventors: Albert Blum
Original assignee: Albert Blum
Priority date: 2000-11-28
Filing date: 2001-11-28
Publication date: 2002-06-06
Also published as: DE10058919A1; AU2002215870A1

Abstract

The invention relates to a hydraulic power plant (1) comprising an anchored floating body (2), provided with at least one flow channel (3, 7, 8) with at least one converting device (4), wherein mechanical energy is converted into hydraulic kinetic energy by said converting device. The flow channel (3, 7, 8) is constructed in such a manner that it exploits the kinetic energy from the wave breakers. The inlet (3a) of the flow channels (3, 7, 8) is disposed above the waterline of the floating body (2) on a longitudinal side (2d) of said floating body (2) orientated towards the breakers (5) and extends with a gradient in relation to an outlet (3b) arranged on the opposite longitudinal side (2e) of the floating body (2).

Description

Current power plant;

The invention relates to a Stro ungskraftwerk with an anchored floating body, in which at least one flow channel is provided with at least one converter device, wherein hydraulic converter energy into mechanical energy can be converted with the converter device.

A generic power plant is disclosed in DE 30 48 290 AI. A hull is provided here as a floating body, through which a flow channel referred to as an inlet pipe penetrates from the bow with a slope to the stern. With this device, water currents on the coast, in lakes, streams or rivers are to be used for energy generation. A wide bow is provided for this purpose, which builds up water and serves as a funnel for the inlet pipe.

Since water is dammed up in front of the bow with the well-known power plant, this entry has both the entry of the flow channel and the outlet below the water line. It is unclear what the gradient of the flow channel should serve. Although it redirects the flow, it does not cause any usable speed or pressure change in the flow. Rather, the flow experiences increased resistance through the installation of a converter device in the flow channel. This is greater than the flow resistance outside the flow channel. Thus the flow energy is in the Flow channel low and the well-known power plant little effective.

The invention has for its object to improve the efficiency of a generic power plant.

According to the invention, this object is achieved in that the flow channel is designed to utilize the flow energy of surf waves and that the entry of the flow channel for this purpose is arranged above the water line of the floating body on a longitudinal side of the floating body facing the surf and with a favor towards one the outlet arranged on the opposite long side of the floating body.

The energy of surf waves is extremely high. Already at a wave height of only 1.5 meters, a surf wave has an output of 1.66 kilowatts per meter of wave front, as studies on the west coast of the British Isles have shown.

The current power plant primarily uses the kinetic energy of the surf waves that hit the coast. The flow channel of the current power plant has a height difference between the entry and the exit, whereby the flow rate is additionally increased. The entry of the flow channel is arranged so high above the water line that part of the amount of water from a wave crest m can enter the flow channel and flows to the exit with a favor.

With the proposed construction, the surf waves with high kinetic energy are channeled at the entrance and part of the amount of water withdrawn from the wave crest is conducted in the flow channel. The flow channel is cyclically flowed through with each wave crest, so that there is a discontinuous conversion of the flow energy into mechanical energy. The degree of discontinuity can be reduced, for example, by using part of the flow energy to accelerate a flywheel mass, which maintains the movement of the converter device during the absence of water flow. The power station can serve in various forms as an energy store. With the mechanical energy gained, compressed air or pressurized water can be produced and stored, for example.

Another advantage is seen in the fact that the flow power plant can in principle be placed close to the consumer. It can also be placed near the disposal company if the later disposal costs for the power plant are considered to be a decisive economic aspect. The floating power plant is therefore very easy to move to another berth at any time. For example, it can be subtracted very easily from development areas close to the coast to avoid noise pollution. This is particularly simple if a separate drive is provided which makes the power plant maneuverable, fuel for a drive motor being able to be stored in the ballast space.

No building land is required for the installation, which reduces the approval effort and costs. Conveniently, multiple power plants can be installed in stages as needed.

A further design of the current power plant provides a large number of flow channels lying side by side in the floating body. The float can be anchored to the wave front of the surf waves via an anchoring device so that the wave crest of an incoming surf wave reaches one flow channel after the other and water successively into the adjacent reached and water successively enters the adjacent flow channels. In each individual flow channel, the flow energy is converted discontinuously, but the degree of discontinuity can be drastically reduced by interconnecting the mechanical energy. With this construction, almost a continuous mechanical performance can be tapped.

In addition, the efficiency of the power plant can be improved in that the flow channel has a cross-sectional profile from the inlet to the outlet, with which an acceleration effect for the water flowing through can be achieved. The geometry of the flow channel and the acceleration effect that can be generated for the water flowing through it can be matched to the converter device in such a way that it works with high efficiency under optimal operating conditions.

A further benefit is obtained when each flow channel is arranged in the floating body in such a way that when the floating body is anchored in the medium inclined position to the wavefront, it lies approximately in the direction of propagation of the wavefront. The amount of water diverted from a wave crest can thus flow through the flow channel almost in the direction of propagation, namely approximately at right angles to the wave front. This simple measure largely avoids energy losses by redirecting the flow in the flow channel.

The length of each flow channel or the width of the hull to be flown through is expediently designed such that there is always a trough at the outlet of the flow channel when water flows out. Since the flow power plant also achieves an acceleration effect from the height difference between the entry and exit of the flow channel in addition to the kinetic energy of a surf wave, a large height difference is sought and the exit is intended to be relatively far below the level of the entry of the flow channel. By adjusting the width of the float, it is possible to design the flow channel so that the water, which comes out cyclically with the frequency of the surf wave, only ever leaves the flow channel when there is a trough at the outlet and the outlet is above the current one Waterline is located.

An additional benefit is achieved if a backflow flap is arranged at each outlet of a flow channel. This prevents water from entering at the outlet of a flow channel if the outlet is in the area of a wave crest below the water line. If there is a trough in the area of the outlet, such water would only run out slowly and hinder the outlet of the amount of water accelerated in the flow channel. The simple measure of arranging a back pressure flap reliably prevents water from penetrating on the side of the outlet of the flow channel.

Favorably, both entrances and exits of flow channels are arranged on each long side of the floating body. This allows the float to be brought from an initial position oriented in the direction of propagation of the wavefront for operation either to one side or the other m an oblique position to the wavefront. This is particularly advantageous when a wavefront runs across a coast. With entries for flow channels on both long sides, part of the flow channels can always be brought into the direction of propagation of the wavefront, regardless of whether the surf waves hit a coast transversely from one side or transversely from the other side.

It is helpful if the anchoring device has a footbridge attached to the bottom of the coastal water or on land. indicates that the web is designed to be non-rotatable about vertical axes but can be raised and lowered with the tide stroke, and that the floating body is connected to the web with its rear facing away from the surf via a joint. Due to the articulated connection to the web, the floating body can be brought into the desired inclined position relative to the surf waves. For example, it can be held in the desired inclined position using an anchor chain, which is favorably attached to the bow of the floating body. For this purpose, the anchor chain is fixed with its end facing away from the bow. The inclination of the float can be varied by shortening or lengthening the anchor chain.

At least one generator is simply provided, to which the mechanical energy can be supplied and with which the mechanical energy can be converted into electrical energy.

This embodiment of the power plant is applicable, for example, for hydrogen production. Both the required raw material water and the required electrical energy are advantageously present at the berth of the power plant, so that hydrogen can be split off from water by electrolysis. Wastewater treatment is another application. Waste water or clear substrate supplied via lines can be buffered in the ballast room and pumped back to the power plant after treatment.

An alternative embodiment provides that a separate generator is connected to each converter device.

Another alternative of the power plant provides that the mechanical energy of several converter devices is supplied to a generator. According to this proposal, several converter devices can be combined in groups with one generator, or all converter devices Devices feed a single generator. Depending on the size of the float and the number of flow channels and converter devices, the best compromise can always be found between the generator size and the installation and maintenance costs for the generator or generators. The more converter devices supply mechanical energy to the generator, the larger or more powerful it must be.

Advantageously, several converter devices are connected via a transmission shaft that drives a generator. With this construction, the converter devices which are not currently flowed through are kept in motion by the flowed through converter devices. As a result, there are almost no start-up losses when there is renewed flow through an unpressurized converter device.

There is a further benefit if each converter device has a free-flow impeller with a radial flow, since this type of flow impeller is very adaptable to strongly fluctuating water flows and can already convert relatively low water flows and fall heights well into mechanical energy. Such a converter device is known, for example, under the name "Ossberger turbine". It uses fall heights of around 1 meter very effectively.

The function of the current power plant can be further improved by providing a ballast space in the floating body. The ballast room is preferably arranged in the lower region of the floating body. It prevents the floating body from floating and rocking through the individual surf waves. Due to the ballast, the floating body is always in an approximately horizontal swimming position despite the waves. The fill level of the ballast space also allows the depth of the float to be varied. In this way, the float is in a stable position. Floating up and down between individual surf waves is thereby prevented. prevents. In addition, the level of the entry and the exit of the flow channel above the water line can be set by the fill level of the ballast space.

A further improvement provides that the ballast space is divided in the longitudinal direction of the floating body, so that a different skewing around the longitudinal axis of the floating body can be generated by different filling. The height difference between the entry and the exit of a flow channel can be changed by means of a specific inclined position. This pays off, for example, when surf waves with low wave heights do not reach the entry of the current channel when the hull was swimming without an inclined position. By means of a targeted inclined position, it is possible with the proposed construction to reduce the height of the entry relative to the water line, so that the entry of the flow channel can also flow from wave crests with lower wave height. The exit of the flow channel is of course increased by lowering the entry, so that the overall height difference between the entry and the exit of the flow channel is reduced. The height difference can also be increased by bringing the floating body into an opposite oblique position. Since the kinetic energy of the water mass of an incoming surf wave is essentially used in the current power plant, the entry of the current channel can always be maneuvered to an optimal altitude. If the height of the wave is large, it is advisable to raise the inlet by deliberately sliding the float and thereby lower the outlet, whereby a compromise is found between the inlet height and the height difference in order to ensure that the amount of water flowing through can flow freely.

Another benefit is seen in the fact that the floating body is formed from a ship's hull. It is aimed at the Hull of disused ships, for example converting from ocean ships with large hull lengths to a power plant and not to be scrapped.

Since strong surf waves occur in many places, the wave fronts of which are 250 meters long and longer, it is useful to use extremely long hulls. Since the ship's hull is anchored to the wave front of the surf wave, the usable length of the wave front is in any case less than the length of the ship's hull. In order to take advantage of a wave front of 250 meters long, the hull had to have a length of 350 to 400 meters depending on the angle of inclination to the wave front.

The design effort is low if, from the point of view of the integral design, several of the flow channels are brought together and merge into a common turbine channel. Instead of many small converter devices, namely in each flow channel, these are combined into one or a few correspondingly large converter devices, one of which is arranged as a common converter device in the turbine channel. The turbine channel is to be regarded as part of each flow channel that penetrates the floating body.

A large number of flow channels can be accommodated in a floating body. If all were brought together and used via a converter device, this had to be relatively large. In order to limit the size of a converter device to a manageable size, it is advisable to provide several groups of flow channels that are brought together. The flow channels can, for example, be merged into groups of 2-10 and each transferred to a turbine channel in which the common converter device is arranged. The converter devices required for this level of integration can be dimensioned very simply in such a way that handling and transportation are easy to handle.

The converter device preferably has at least one axial turbine impeller. The construction of the power plant is particularly small if the axial turbine impeller is arranged on the free end of a generator shaft. The generator shaft protrudes through a wall of the turbine duct. In ^¬ nerhalb the turbine channel no storage of the turbine runner, however, is required.

The invention is illustrated by way of example below in a drawing and described in detail with reference to the individual figures. Show it:

1 is a perspective view of a power plant that is anchored in the surf waves of a coast,

FIG. 2 shows a side view of the power plant according to FIG. 1,

3 is a plan view of the power plant according to FIG. 1,

4 is a front view of the power plant according to FIG. 1,

5 shows the cross section of a flow channel according to FIG. 4,

6 shows a second embodiment of a power plant,

7 is a perspective view of the power plant according to FIG. 6,

8 is a partial perspective view of a a power plant with merged flow channels,

FIG. 9 is a side view of the power plant according to FIG. 8 with an inlet funnel for the entrances to the flow channels.

According to the drawing, the power plant 1 consists of a floating body which is formed from an old ship's hull 2. Eight flow channels 3, 7 and 8 are provided in the hull 2. The flow channels 3, 7 and 8 are each equipped with a converter device 4 with which hydraulic flow energy can be converted into mechanical energy. The entrances 3a of the flow channels 3, 7 and 8 lie above the water line on the longitudinal side 2d of the hull facing the surf 5. Each flow channel 3, 7 and 8 runs with a slope to an outlet 3b arranged on the opposite longitudinal side 2e of the hull 2.

The hull 2 is anchored via an anchoring device 6 in an inclined position to the wavefront 5a of the surf waves. The anchoring device 6 has a land 6a fastened on land, which can be raised and lowered with the tide stroke. The ship's hull 2 is connected with its stern 2a facing away from the surf 5 via a joint 6b to the web 6a. Furthermore, the anchoring device 6 has an anchor chain 6c, which is attached at one end to the bow 2b of the hull 2 and the other end (not shown) is attached to a fixed point, for example a support anchored to the bottom and standing in the surf 5 , The waves that hit the surf 5 on the long side 2d against the hull 2 push it towards the coast. The anchor chain 6c holds back the ship's hull 2 and secures the desired inclination angle α. In this inclined position, a wave crest joins an incoming surf wave. next in the first flow channel 3, which is closest to the bow 2b. Part of the branched-off amount of water flows through the first flow channel 3 and actuates the converter device. In the meantime, the wave crest of the surf wave continues to run onto the coast and successively reaches the second flow channel 7, the third flow channel 8 and each further flow channel. Depending on the number of current channels and the wavelength between two wave crests, it may happen that when the first wave crest reaches the third, fourth, etc. current channel, the following wave crest already re-enters the first current channel 3. It is so easy to understand that as the number of flow channels increases, the degree of discontinuity in the conversion of flow energy into mechanical energy decreases. The degree of discontinuity can become so low that electrical energy can be generated almost continuously.

The power plant shown in Figures 1 to 4 is designed as a hybrid power plant, therefore additional measures are shown that reduce the discontinuity in the generation of electrical energy. On the one hand, a so-called wind energy converter 9 is provided on the deck of the ship's hull 2 for utilizing the flow energy of the wind. This wind energy converter 9 takes advantage of the increased flow velocity of the air in the vicinity of a flow around the body. The mechanical energy obtained is also converted into electrical energy. Advantageously, the same device is used for converting the mechanical energy of the wind energy converter 9, which also converts the mechanical energy obtained in the flow channels. In the wind energy converter 9, solar cells 10 are also integrated which generate electrical energy in a photovoltaic manner if there is sufficient solar radiation. The solar cells 10 form a wind deflector for the air that flows around the ship's hull. The air gradually becomes a radial wind turbine 9 a of the wind energy converter 9 through the wind guiding device distracting. The flow rate of the wind is increased with the help of the wind control device.

A total of eight flow channels 3, 7 and 8 are provided in the side view of the current power plant according to FIG. 1 shown in FIG. 2. The converter devices arranged in the flow channels 3, 7 and 8 each have a free-flow impeller 3c, 7c and 8c through which there is a radial flow and also guide devices not shown here. The shafts of the free jet impellers 3c, 7c and 8c are advantageously in alignment and are therefore very easy to connect to one another. In the exemplary embodiment shown, the shafts of the free jet impellers 3c, 7c and 8c are coupled to one another. Of course, there is also the possibility of arranging several free jet impellers 3c, 7c and 8c in groups or all free jet impellers 3c, 7c and 8c on a common transmission shaft. The free jet impellers 3c, 7c and 8c drive a single generator 11 according to FIGS. 4 and 5, which is arranged in the bow 2b of the hull 2.

The same applies to the radial wind impeller 9a of the wind energy converter 9, which is divided into five sections and which also transmits its torque via a traction means 9b to the generator 11 arranged in the bow 2b.

3 shows the top view of the power plant. This shows how the flow channels 3, 7 and 8 run through the hull 2. In this construction, namely vertically from one long side 2d of the hull 2 to the opposite long side 2e. The width of each flow channel 3, 7 and 8 corresponds to the length of the radial free jet impeller 3c, 7c and 8c. A surf wave that enters the flow channels 3, 7 and 8 of a ship's hull 2 inclined to the wave front cannot flow through the flow channels 3, 7 and 8 in this construction in the direction of propagation A. Rather, it must be about the tion angle α of the hull 2 are deflected.

FIG. 4 shows a front view of the power plant. The bow 2d of the hull 2 can be seen, which converges to a tip composed of five bow segments. The flow channel 3, in which the radial free-jet impeller 3c is arranged, is hidden and shown in dashed lines. It is a simplified schematic representation in which the position of the free jet impeller 3c is not exactly entered. The free jet impeller 3c is preferably arranged closer to the outlet 3b of the flow channel 3 so that the potential gradient of the flow channel 3 by the acceleration of the water passing through fully ^¬ uses can be. Furthermore, the side view shows the radial wind turbine 9a of the wind energy converter 9, which transmits mechanical energy to the common generator 11 via the traction means 9b. A ballast space is provided in the bottom of the hull 2 and extends along the hull

2 extends and is divided into two ballast halves 13a and 13b. The ballast space halves 13a and 13b are to be filled and emptied separately. An uneven filling of the ballast space halves 13a and 13b can cause the ship's hull 2 to heel about its longitudinal axis. This possibility is provided in order to be able to change the otherwise fixed height difference between the inlet 3a and the outlet 3b of the flow channel 3 and the other flow channels.

In Figure 5, the cross section of the flow channel is schematic

3 shown in reduced form and the position of the radial free jet impeller 3c within the flow channel 3.

An alternative embodiment of the power plant is shown in simplified form in FIGS. 6 and 7. Identical features are provided with the same reference symbols as in the previous described embodiment.

Figure 6 shows the top view of a floating body of the power plant. This is also a ship's hull 2. The flow power plant differs from the above-described embodiment by the geometry of the flow channels 3, 7 and 8. In addition, by the arrangement of the flow channels 3, 7 and 8 in the ship's hull 2 and by the type the converter devices 4 which convert the flow energy into mechanical energy.

In Figure 7, the hull 2 is shown in a reduced perspective. The essential difference to the embodiment described above results from the use of another converter device 4. Instead of a radial free jet impeller, an axial impeller is provided in the construction of FIGS. 6 and 7. The axes of rotation of the individual axial impellers 3c, 7c and 8c each lie in the direction of flow of the flow channels 3, 7 and 8. Because the mechanical movement coupling of the axial impellers 3c, 7c and 8c of several flow channels 3, 7 and 8 would only be possible via complex gears, coupling is dispensed with in this embodiment and instead a separate generator is provided for each converter device. The construction makes very effective use of the kinetic energy because each flow channel 3, 7 and 8 m is arranged in the ship's hull 2 in such a way that when the ship's hull 2 is at an average inclination relative to the wavefront, the water flows exactly in the direction of propagation A through the flow channels 3, 7 and 8 can flow without being redirected. According to the exemplary embodiment according to FIGS. 1 to 5, on the other hand, it is not provided for structural reasons to arrange the flow channels 3, 7 and 8 obliquely in the hull 2. This is because of the requirement that all free jet impellers 3, 7 and 8 should be arranged in alignment in order to keep the construction simple. So that in the exemplary embodiment of FIGS. 6 and 7, during the cyclical flow through each flow channel 3, 7 and 8, no high startup losses occur because the axial loaders 3c, 7c and 8c have to be accelerated from standstill, the flow channels 3, 7 and 8 assigned a flywheel. The flywheel holding a decaying Rota ^¬ tion of the respective axial impeller 3c, 7c and 8c maintained in the time between two Wasserdurchstromungen.

FIG. 8 shows a partial perspective illustration of a power plant 1 with merged flow channels 3, 7 and 8, which merge into a turbine channel 14. Several groups of flow channels 3, 7 and 8 combined in this way are arranged in a large floating body. The turbine channel 14, which forms part of each flow channel 3, 7 and 8, ends in an outlet 3b on a longitudinal side 2e of the floating body 2 or ship's hull 2. The merging of the three flow channels 3, 7 and 8 shown is only an example. Another number of merged flow channels can prove expedient for reasons of space or because of the advantageous use of energy.

FIG. 8 also shows a converter device which has a generator 11. The generator 11 is arranged outside the flow channel or the turbine channel 14. A free shaft end of the generator shaft 15, on which an axial turbine impeller 16 is arranged, projects into the turbine channel 14. The effort of this construction is considerably less than with a construction with many small converter devices. The inlet of the flow channels 3, 7 and 8 is preceded by an inlet funnel 17 which covers most of the side surface of the floating body 2 and in this way increases the amount of water which is fed to the flow channels 3, 7 and 8. The inlet funnel 17 can best be seen in the illustration according to FIG. 9, in which the cross section of the inlet funnel 17 is shown. Such an inlet funnel 17 can equally be provided in the exemplary embodiments in FIGS. 1 to 7.

Current power plant

Bezuqzeichenliste

Stromungskraftwerk

Hull a stern b bow d long side e long side

Flow channel a inlet b outlet c free jet impeller

Surf a wavefront

Anchoring device a bridge b joint c anchor chain

Flow channel a inlet c free jet impeller

Wind energy onverter a radial wind turbine 0 solar cell 1 generator 2 traction means 3a ballast half 3b ballast 4 turbine channel 5 generator shaft 6 axial turbine 7 inlet funnel inclination angle

Claims

Current power plant

1. Power plant (1) with an anchored floating body (2), in which at least one flow channel (3, 7, 8) with at least one converter device (4) is provided, with the converter device (4) being able to convert hydraulic current energy into mechanical energy , characterized in that the flow channel (3, 7, 8) is designed to utilize the flow energy of surf waves that the entry (3a) of the flow channel (3, 7, 8) above the water line of the floating body (2) on a the surf (5) facing the long side (2d) of the floating body (2) is arranged and extends with a favor to an outlet (3b) arranged on the opposite long side (2e) of the floating body (2).

2. Power plant according to claim 1, dadurchge - indicates that in the floating body (2) side by side a plurality of flow channels (3, 7, 8) is provided that the floating body (2) via an anchoring device (6) m inclined to the wavefront Surf waves can be anchored so that the wave crest of an incoming surf wave reaches one flow channel (3, 7, 8) after the other and water successively into the adjacent flow channels (3, 7, 8) occurs.

3. Power plant according to claim 1 or 2, so that the flow channel (3, 7, 8) has a cross-sectional profile from the inlet to the outlet, with which an acceleration effect for the water flowing through can be achieved.

4. Flow power plant according to one of claims 1 to 3, - characterized in that each flow channel (3, 7, 8) is arranged in the floating body (2) so that it is when the floating body (2) in a medium inclined position to the wavefront is anchored, approximately in the direction of propagation (A) of the wavefront.

5. Power plant according to one of claims 1 to 4, since - characterized in that the length of each flow channel (3, 7, 8) or the width of the floating body (2) to be flowed through is designed such that a wave trough is always present the outlet of the flow channel (3, 7, 8) when water flows out.

6. Power plant according to one of claims 1 to 5, d a - d u r c h g e k e n n z e i c h n e t that at each outlet (3b) of a flow channel (3, 7, 8) a back pressure flap is arranged.

7. Power plant according to one of claims 1 to 6, d a - d u r c h g e k e n n z e i c h n e t that on each

On the long side (2d, 2e) of the float (2), both inlets (3a) and outlets (3b) of flow channels (3, 7, 8) are arranged.

8. Power plant according to one of claims 2 to 7, characterized in that the anchoring tion device (6) has a web (6a) fastened to the ground or on land, that the web (6a) is designed to be non-rotatable about vertical axes but can be raised and lowered with the tide stroke, and that the floating body (2) is designed with one of the Surf (5) facing away from the stern (2a) is connected to the web (6a) via a joint (6b).

9. Power plant according to one of claims 1 to 8, d a - d u r c h g e k e n n z e i c h n e t that at least one generator (11) is provided, to which the mechanical energy can be supplied and with which the mechanical energy can be converted into electrical energy.

10. Current power plant according to claim 9, that a separate generator is connected to each converter device (4).

11. The power plant according to claim 9, that the mechanical energy of a plurality of converter devices (4) is supplied to a generator (11).

12. A power plant according to claim 11, so that a plurality of converter devices (4) are connected to one another via a transmission shaft which is connected to a generator (11).

13. Current power plant according to one of claims 1 to 12, d a - d u r c h g e k e n n z e i c h n e t that each converter device (4) has a radially flowed free jet impeller (3c, 7c, 8c) or an axial impeller (3c, 7c, 8c).

14. Power plant according to one of claims 1 to 13, characterized in that in the Floating body (2) a ballast space (13a, 13b) is provided.

15. Current power plant according to claim 14, so that the ballast space (13a, 13b) is divided in the longitudinal direction of the floating body (2), so that a specific inclined position about the longitudinal axis of the floating body (2) can be generated by different filling.

16. Current power plant according to one of claims 1 to 15, d a d u r c h g e k e n n z e i c h n e t that the floating body (2) is formed from a ship's hull (2).

17. Power plant according to one of claims 1 to 16, that a plurality of flow channels (3, 7, 8) are brought together and merge into a common turbine channel (14).

18. The power plant according to claim 17, which also has at least one common converter device arranged in the turbine channel (14).

19. Power plant according to claim 17 or 18, so that several groups of merged flow channels are provided.

20. A power plant according to claim 18 or 19, so that the converter device has at least one axial turbine impeller (16).

21. Power plant according to claim 20, characterized in that the axial turbine impeller (16) on the free end of a generator shaft (15) is arranged

2. Flow power plant according to one of claims 1 to 21, since ^{¬ characterized in} that an inlet funnel (17) is connected upstream of the inlets (3a, 7a, 8a) of the flow channels.