JP7312512B1 - power ship - Google Patents

Abstract

A power-generating ship capable of stabilizing the hull, reinforcing the ballast housing, and improving power generation efficiency is provided. A ballast housing (2) has an inflow port (23) and an outflow port (24) through which sea currents pass horizontally in the ballast housing (2). One end of the main shaft 31 of the power generator 3 is attached to the flat ship bottom 11 and the other end is attached to the flat bottom 21 of the ballast housing 2 . The main shaft 31 reinforces the strength of the bottom 11 and the bottom 21 . The vane 33 receives the ocean current controlled by the ocean current guide wall 34 and rotates the rotating body 32 by the force of the ocean current. One end of the current guide wall 34 is attached to the bottom 11 of the ship and the other end is attached to the bottom 21 of the ballast housing 2 . The ocean current guide wall 34 reinforces the strength of the ship bottom 11 and the bottom portion 21 . The attitude of the ship main body 1 is stabilized by the ocean current that has flowed into the ballast housing 2 . [Selection drawing] Fig. 1

Description

The present invention relates to a power ship.

Patent Literature 1 below proposes a power-generating ship in which a turbine is arranged inside a keel, and seawater flowing into the keel rotates the turbine to generate power. Further, Patent Literature 2 below proposes a power generation system that generates power using a turbine arranged on the bottom of a ship.

On the other hand, the inventor of the present invention has proposed a tidal power generation device which is installed in water and can generate electricity using the tidal current, as in Patent Document 3 and Patent Document 4 below.

JP 2015-3641 A JP 2009-161032 A Japanese Patent No. 6543861 Japanese Patent No. 6592216

As a result of extensive research on methods for improving the power generation efficiency of a power generation ship, the inventor of the present invention has found that various excellent effects can be obtained by applying the basic structure of Patent Document 3 to a power generation ship.

The present invention has been made in view of the above findings. SUMMARY OF THE INVENTION A main object of the present invention is to provide a power-generating ship capable of stabilizing the hull, reinforcing the ballast housing, and improving the power generation efficiency.

The present invention can be expressed as inventions described in the following items.

(Item 1)
It comprises a ship body, a ballast housing and a generator,
The ship body has a flat bottom,
The ballast housing is arranged below the bottom of the ship,
and the ballast housing has an inlet and an outlet for allowing sea currents to pass horizontally in the ballast housing,
Furthermore, the bottom of the ballast housing is flat,
The power generator includes a vertically arranged main shaft, a rotatable rotating body supported by the main shaft, blades attached to the rotating body, and an ocean current guide wall for controlling the ocean current flowing into the ballast housing,
one end of the main shaft is attached to the bottom of the ship, and the other end of the main shaft is attached to the bottom of the ballast housing, whereby the main shaft reinforces the strength of the bottom and the bottom,
The blades are configured to receive the ocean current controlled by the ocean current guide wall and rotate the rotating body by the force of the ocean current,
One end of the current guide wall is attached to the bottom of the ship, and the other end of the current guide wall is attached to the bottom of the ballast housing, so that the current guide wall reinforces the strength of the bottom and the bottom,
Further, the ballast housing stabilizes the attitude of the ship main body by the ocean current that has flowed into the ballast housing.

(Item 2)
The main shaft is composed of a first main shaft and a second main shaft arranged parallel to each other,
The rotating body comprises a first rotating body attached to the first main shaft and a second rotating body attached to the second main shaft,
The ocean current guide wall is configured to introduce the ocean current flowing in from the inlet into an ocean current channel between the first rotating body and the second rotating body, whereby the first rotating body and the second rotating body are rotated in opposite directions by the ocean current via the blades.

(Item 3)
The power ship according to item 2, wherein the first rotating body and the second rotating body are bilaterally symmetrical with respect to the ocean current channel.

(Item 4)
The power ship according to item 1 or 2, wherein the width of the ship main body and the width of the ballast housing are the same, so that the side surfaces of the ship main body and the side surfaces of the ballast housing are linear in cross section.

(Item 5)
The power generator has a generator,
The generator is installed inside the ship body at a position where the ocean current does not enter,
3. The power ship according to item 1 or 2, wherein the generator is connected to the main shaft and configured to generate power as the main shaft rotates.

(Item 6)
3. The power ship according to item 1 or 2, wherein the shape of the bottom of the ship and the shape of the bottom of the ballast housing are the same.

According to the technology of the present invention, it is possible to provide a power-generating ship that can exhibit stability of the hull, reinforcement of the ballast housing, and improvement in power generation efficiency.

1 is a schematic cross-sectional view of a power ship according to an embodiment of the invention; FIG. FIG. 2 is a schematic illustration of a state viewed from the direction of line AA in FIG. 1; It is explanatory drawing which expands and shows the principal part cross section of the power generation ship which concerns on the modification of this invention.

A power generation ship according to an embodiment of the present invention will now be described with reference to the accompanying drawings. It should be noted that the attached drawings are all schematic explanatory diagrams, and the dimensional ratios and scales are not accurate.

(Configuration of this embodiment)
The power ship of this embodiment includes a ship body 1, a ballast housing 2, and a power generator 3 as main components.

The ship body 1 has a flat ship bottom 11 . The ship body 1 has a side surface 12 continuous with a ship bottom 11 so that it can float on the sea surface 100. - 特許庁A storage battery 13 and a hydrogen tank 14 are installed on the upper part of the ship body 1 . The storage battery 13 stores electricity obtained by a generator 36, which will be described later. The hydrogen tank 14 stores hydrogen produced by an electrolyzer (not shown) using electric power obtained by the generator 36 . In the present embodiment, it is assumed that the ship body 1 is not self-propelled and is towed by a suitable power-equipped ship (not shown), but it may be configured to be self-propelled with power.

The ballast housing 2 is arranged below the ship bottom 11 . In addition, the ballast housing 2 has an inlet 23 and an outlet 24 through which sea currents pass horizontally within the ballast housing 2 (see FIG. 2). Furthermore, the bottom 21 of the ballast housing 2 is flat. The ballast housing 2 of this embodiment stabilizes the attitude of the ship body 1 by the ocean current that flows into the ballast housing 2 . Inside the ballast housing 2 and between a first rotating body 321 and a second rotating body 322, which will be described later, is an ocean current channel 25 through which the ocean current passes.

The inlet 23 of this embodiment is partitioned into a plurality of inlets 231 to 234 by ocean current guide walls 34 (see FIG. 2). Similarly, the outflow port 24 of this embodiment is partitioned into a plurality of outflow ports 241 to 244 by an ocean current guiding wall 34 (see FIG. 2).

The width of the ship body 1 and the width of the ballast housing 2 are made equal, so that the side surface 12 of the ship body 1 and the side surface 22 of the ballast housing 2 are linear in cross section (see FIG. 1). Further, in this embodiment, the shape of the ship bottom 11 and the shape of the bottom portion 21 of the ballast housing 2 are the same.

The power generator 3 has a vertically arranged main shaft 31, a rotatable rotating body 32 supported by the main shaft 31, blades 33 attached to the rotating body 32, and a sea current guide wall 34 for controlling the sea current flowing into the ballast housing 2. Furthermore, the power generator 3 of this embodiment has a generator 36 (see FIG. 1).

One end (upper end) of the main shaft 31 is attached to the ship bottom 11 . The other end (lower end) of the main shaft 31 is attached to the bottom portion 21 of the ballast housing 2 . Accordingly, in this embodiment, the main shaft 31 reinforces the strength of the ship bottom 11 and the bottom portion 21 .

More specifically, the main shaft 31 of this embodiment is composed of a first main shaft 311 and a second main shaft 312 arranged parallel to each other. The first main shaft 311 and the second main shaft 312 are rotatably supported by bearings 361 and 362 attached to the bottom 11 and the bottom 21, respectively (see FIG. 1).

The rotating body 32 is composed of a first rotating body 321 attached to the first main shaft 311 and a second rotating body 322 attached to the second main shaft 312 . The first rotating body 321 and the second rotating body 322 are bilaterally symmetrical with the ocean current channel 25 interposed therebetween.

The vane 33 receives the ocean current controlled by the ocean current guide wall 34 and rotates the rotating body 32 by the force of the ocean current. The blades 33 are composed of first blades 331 attached to the first rotor 321 and second blades 332 attached to the second rotor 322 .

One end (upper end) of the ocean current guide wall 34 is attached to the ship bottom 11 . The other end (lower end) of the ocean current guide wall 34 is attached to the bottom portion 21 of the ballast housing 2 . Accordingly, in this embodiment, the ocean current guide wall 34 reinforces the strength of the ship bottom 11 and the bottom portion 21 . The ocean current guiding wall 34 of the present embodiment is adapted to introduce the ocean current flowing in from the inlet 23 of the ballast housing 2 into the ocean current channel 25 between the first rotating body 321 and the second rotating body 322. As a result, the first rotating body 321 and the second rotating body 322 are rotated in opposite directions by the ocean current via the first blade 331 and the second blade 322 (see FIG. 2).

More specifically, the ocean current guide wall 34 of the present embodiment is composed of ocean current guide walls 341 to 348 having various shapes (see FIG. 2), and by these, the ocean current can be controlled in an appropriate direction.

The generator 36 is installed at a position (for example, a position covered by the deck 15) inside the ship body 1 (that is, inside the ship) where the ocean current does not enter (see FIG. 1). The generator 36 is connected to the first main shaft 311 and the second main shaft 312, respectively, and is configured to generate power as the main shafts 311 and 312 rotate.

(Operation of this embodiment)
Next, the operation of the power ship having the above configuration will be described. First, the main body 1 of the power ship is installed so that the inlet 23 of the ballast housing 2 in this embodiment faces the upstream side of the ocean current. In general, the direction of ocean currents (for example, the Oyashio Current and the Kuroshio Current) in the sea is almost constant, so the ship body 1 can be installed without difficulty. After installation, the position of the ship body 1 can be fixed by suitable mooring means (for example, anchors, etc.).

In this state, sea currents flow into the ballast housing 2 from the inlets 231 to 234 of the ballast housing 2 (see arrows in FIG. 2). The inflowing ocean current is guided by the ocean current guide walls 341 to 345 and flows toward the ocean current channel 25 . Then, the ocean current rotates the first rotating body 321 and the second rotating body 322 in opposite directions via the first blade 331 and the second blade 332 . After that, the sea current is again guided by the sea current guide walls 344-348 and smoothly discharged to the outside from the outlets 241-244. Since the function of such an ocean current is basically the same as that of Patent Document 3 described above, further detailed description thereof will be omitted.

When the first rotating body 321 and the second rotating body 322 rotate, the generator 36 can generate power. The power obtained can be stored as electricity in the storage battery 13 or as hydrogen in the hydrogen tank 14 . These energies can also be recovered by fitting wiring and piping to the power ship as appropriate. Alternatively, it is also possible to recover the energy by recovering the power generation vessel to a mothership or port.

In the power ship of the present embodiment, power is generated while introducing ocean currents into the ballast housings 2 , so the ocean currents in the ballast housings 2 can stabilize the attitude of the ship body 1 , that is, the entire power generation ship. In other words, there is an advantage that the ocean current in the ballast housing 2 can be effectively utilized for two uses, power generation and attitude stabilization, at the same time.

Further, in the power ship of this embodiment, the strength of the bottom 11 of the ship body 1 and the bottom portion 21 of the ballast housing 2 can be reinforced by the main shaft 31 and the ocean current guide wall 34 . As a result, it is possible to increase the cross-sectional area of the ballast housing 2 and introduce a large amount of ocean current, thereby improving power generation efficiency. Moreover, since the strength of the ship bottom 11 and the bottom portion 21 is reinforced by the main shaft 31 and the ocean current guide wall 34, other reinforcing means can be simplified, and the manufacturing cost of the power ship can be reduced.

Furthermore, in the power ship of the present embodiment, the first rotating body 321 and the second rotating body 322 rotate in opposite directions to each other, so there is no possibility that rotational torque will be applied to the power ship itself, and the posture of the power ship can be stably maintained. In this embodiment, since the first rotating body 321 and the second rotating body 322 are symmetrical, the effect of canceling out the mutual rotational torque can be further enhanced. Moreover, a gyroscopic effect can be expected from the rotation of these rotating bodies, which is thought to further improve the attitude stabilization effect.

In addition, in the present embodiment, the width of the hull body 1 and the width of the ballast housing 2 are made equal, and the side surface 12 of the hull body 1 and the side surface 22 of the ballast housing 2 are linear in cross section. Therefore, the cross-sectional area of the ballast housing 2 can be widened to introduce a large amount of ocean current, and from this point also, the power generation efficiency can be improved.

Furthermore, in the present embodiment, the shape of the bottom 11 of the ship body 1 and the shape of the bottom 21 of the ballast housing 2 are the same, so the design and manufacturing costs of the power ship can be kept low.

As described above, according to the power ship of the present embodiment, it is possible to exhibit stability of the hull, reinforcement of the ballast housing 2, and improvement of power generation efficiency.

(Modification)
Next, a configuration of a power ship according to a modification of the embodiment described above will be described with reference to FIG. In this modified example, components that are basically common to those of the power ship of the above-described embodiment are denoted by the same reference numerals to simplify the description.

In this modification, a water pressure reinforcing portion 35 is attached to the ship bottom 11 of the ship body 1, and an ocean current guiding wall 34 (an ocean current guiding wall 341 in the illustrated example) is attached to the water pressure reinforcing portion 35. FIG. A highly rigid material such as a steel plate is used for the hydraulic pressure reinforcing portion 35 . According to the power ship of this modification, even if a strong force is applied to the ocean current guiding wall 34, the deformation of the bottom 11 can be kept low. Also, a similar water pressure reinforcing part can be attached to the joint between the bottom part 21 of the ballast housing 2 and the ocean current guiding wall 34 to reinforce the strength of the bottom part 21 .

It should be noted that the descriptions of the above-described embodiment and modifications are merely examples, and do not represent essential configurations of the present invention. The configuration of each part is not limited to the above as long as the gist of the present invention can be achieved.

For example, in the above-described embodiment, the structure of the rotating body and blades is basically the same as the structure of Patent Document 3, but it can be replaced with the structure of Patent Document 4. In this case, the turbine in Patent Document 4 corresponds to the rotating body and blades in the above-described embodiment. In this way, it becomes easy to make the turbine (rotating body and blades) super-large, and accordingly to make the power-generating ship super-large, so that the power generation efficiency can be further improved.

It is also possible to install a wind power generator and a solar power generator (both not shown) on the deck 15 . The energy (electricity or hydrogen) obtained by these can be stored in the storage battery 13 or the hydrogen tank 14 .

Furthermore, the shape of the bottom portion 21 of the ballast housing 2 may be made larger than the bottom 11 of the ship body 1 . For example, the width or length of the bottom portion 21 of the ballast housing 2 in the front-rear direction may be made larger than the bottom 11 of the ship, and the side surfaces 22 or the front-rear end surfaces of the ballast housing 2 may protrude outward from the main body 1 of the ship. Thereby, the volume of the ballast housing 2 can be increased, and as a result, the rotating body 32 and the blades 33 accommodated therein can be increased in size. Then, power generation efficiency can be further improved.

1 ship main body 11 ship bottom 12 ship main body side 13 storage battery 14 hydrogen tank 15 deck 2 ballast housing 21 bottom 22 side of ballast housing 23 231 to 234 inlet 24 241 to 244 outlet 25 ocean current channel 3 power generator 31 main shaft 311 first main shaft 312 second main shaft 32 rotating body 321 first rotating body 322 second rotating body 33 blade 331 first blade 332 second blade 34 341 to 348 ocean current guiding wall 35 water pressure reinforcing portion 36 generator 361 362 bearing portion 100 sea surface

Claims (3)

It comprises a ship body, a ballast housing and a generator,
The ship body has a cabin formed over the entire width direction of the ship body and a flat ship bottom,
The waterline of the ship body is positioned on the side of the cabin,
The ballast housing is arranged below the bottom of the ship,
and the ballast housing has an inlet and an outlet for allowing sea currents to pass horizontally in the ballast housing,
Furthermore, the bottom of the ballast housing is flat,
The power generator includes a vertically arranged main shaft, a rotatable rotating body supported by the main shaft, blades attached to the rotating body, and an ocean current guide wall for controlling the ocean current flowing into the ballast housing,
one end of the main shaft is attached to the bottom of the ship, and the other end of the main shaft is attached to the bottom of the ballast housing, whereby the main shaft reinforces the strength of the bottom and the bottom,
The blades are configured to receive the ocean current controlled by the ocean current guide wall and rotate the rotating body by the force of the ocean current,
One end of the current guide wall is attached to the bottom of the ship, and the other end of the current guide wall is attached to the bottom of the ballast housing, so that the current guide wall reinforces the strength of the bottom and the bottom,
Further, the ballast housing stabilizes the attitude of the ship main body by the ocean current flowing into the ballast housing ,
The main shaft is composed of a first main shaft and a second main shaft arranged parallel to each other,
The rotating body comprises a first rotating body attached to the first main shaft and a second rotating body attached to the second main shaft,
The ocean current guiding wall is adapted to introduce the ocean current flowing in from the inlet into the ocean current channel between the first rotating body and the second rotating body, whereby the first rotating body and the second rotating body are rotated in opposite directions by the ocean current via the blades,
The first rotating body and the second rotating body are symmetrical across the ocean current flow path,
The width of the cabin of the ship body and the width of the ballast housing are made equal, so that the side surface of the ship body and the side surface of the ballast housing are linear in cross section,
The power generator has a generator,
The generator is installed in the cabin at a position where the ocean current does not enter inside the ship body,
The generator is connected to the main shaft and configured to generate power as the main shaft rotates.
power ship. Further comprising a deck covering the upper part of the cabin,
The power-generating ship according to claim 1 , wherein a wind turbine generator is installed on the deck . The power ship according to claim 1 or 2, wherein the shape of the bottom of the ship and the shape of the bottom of the ballast housing are the same.

Images