JP7199585B1 - ocean current trimaran - Google Patents

Abstract

A trimaran for ocean current power generation is provided in which a propeller provided under the hull is rotated by an ocean current generated by a ship sailing while receiving a strong wind with its hard sails, and electricity is generated by a generator. A trimaran 1 sailing with a hard sail 51 having a pair of side floats 3, 3 provided on the left and right sides of a main hull 2 having a tapered bow, and a cylindrical duct 4 containing a propeller 62 for power generation. was provided between the main hull 2 and the side float 3. The propeller 62 for power generation and the generator 63 are housed in the generator unit container 61, and when not generating power, the generator unit container 61 can be moved to the generator unit storage room 25 in the ship on the draft to reduce seawater resistance. reduced. [Selection drawing] Fig. 4

Description

TECHNICAL FIELD The present invention relates to a trimaran for ocean current power generation, and more particularly to a trimaran for ocean current power generation suitable for converting wind energy in typhoons and strong wind regions into electricity.

A power-generating ship has already been proposed in which a propeller installed under the hull is rotated by a current generated by a ship sailing against strong winds such as typhoons with hard sails to generate electricity with a generator.

JP 2014-184935 A

The power generation ship described in the prior art JP 2014-184935 A has a structure in which a propeller protrudes under a single hull and is rotated by ocean currents. For this reason, (1) a tall ship with hard sails is subject to strong rolling due to the force of the wind. (2) When a propeller rotates without an obstacle such as an enclosure around it, a vortex is generated at the tip of the propeller perpendicular to the direction of travel of the ship, absorbing the energy of the ocean current, resulting in poor power generation efficiency. (3) When transverse waves are flowing, the propeller rotation efficiency is deteriorated, resulting in a decrease in power generation efficiency.

It is an object of the present invention to eliminate the above drawbacks by making the power-generating ship a trimaran structure and covering the power-generating propeller with a cylindrical cover (hereinafter referred to as a cylindrical duct).
That is, the present invention provides a trimaran sailing with hard sails by providing a pair of side floats on the left and right sides of a main hull having a tapered bow, and a pair of side floats under the draft between the main hull and the left and right side floats. (1) is provided with a long cylindrical duct, and a propeller for power generation that is rotated by the ocean current is provided in the cylindrical duct.
In order to reduce water resistance, it is preferable that the tip of the side float is cut obliquely toward the inside.

In addition, the cylindrical duct separation part, which is separated from the cylindrical duct body with the propeller for power generation that rotates due to ocean currents, and the generator that generates power by rotating the propeller for power generation, are integrated into an independent container. The generator unit was constructed by accommodating it in
Although the size of the cylindrical duct varies depending on the size of the main hull, it is preferable that the length be in the range of 10 to 200m and the diameter be in the range of 3 to 20m.
In addition to installing this generator unit at the tip of the long cylindrical duct,
Furthermore, you may provide in the middle.

A generator unit moving device is provided for moving the generator unit to a generator unit storage chamber provided in the hull above the draft.

As this generator unit moving device, a hoist that suspends the generator unit up and down with a rope, a pantograph type vertical movement device, a vertical movement device with a piston, a vertical movement device with a rack and pinion, etc. can be used alone or in combination. can do.

In addition to a single propeller, a contra-rotating propeller can be used as the propeller for power generation in order to further increase the efficiency. Contra-rotating propellers are two sets of propellers that are coaxially arranged and driven in opposite directions to each other.
There is an advantage that the efficiency is improved by canceling out the energy that would be lost as the twist of the flow in one set.

A foldable hard sail is used as the hard sail. It is preferred to use a serpentine hard sail as the foldable hard sail and further to configure the hard sail in a honeycomb structure.
The honeycomb structure is formed by alternately stacking flat plates impregnated with epoxy resin with carbon fiber reinforced orthogonal fabrics and honeycomb layers to form 5 to 9 layers with a thickness of about 5 cm.

As a means of independent operation of the trimaran, any one of a method of rotating the propeller of the generator unit with an electric motor to propel the propeller, a screw propulsion method with a diesel engine, and a water jet propulsion method, or a combination thereof can be used. .

It is common to use a capacitor as a means of storing the electrical energy generated by the generator unit of a trimaran, but its capacity can be reduced by converting the electrical energy to hydrogen and storing it. can.

Furthermore, it is also possible to install a vertical rotating shaft type wind power generator on the deck of the trimaran and use wind power to generate power.

In the present invention, a pair of side floats are provided on the left and right sides of the main hull to form a trimaran structure.

A pair of long cylindrical ducts are installed under the draft between the main hull with a tapered bow and the left and right side floats, and a propeller for power generation that rotates due to the ocean current is installed in the cylindrical ducts. A triangular sea area is formed between the tapered bow of the hull and the tip of the side float, and the ocean current flows into it. You can increase the power generation efficiency by increasing the rotation speed. In addition, even in the case of transverse waves, the side floats stop the transverse waves, rectify the ocean currents in the direction of travel of the ship in the triangular sea area, and suppress the effect of reducing the momentum of the ocean currents flowing into the cylindrical duct due to the transverse waves. .
Furthermore, the trumpet effect can be promoted by cutting the tip of the side float obliquely toward the inside.
In addition, the cylindrical duct rectifies the ocean current and suppresses the generation of eddy currents generated from the tip of the propeller, so the energy of the ocean current can be efficiently converted into the rotation of the propeller, increasing the power generation efficiency.

A generator unit is constructed by integrating the cylindrical duct separation part, which is separated from the cylindrical duct body with the propeller for power generation that rotates due to the ocean current, with the generator that generates power by the rotation of the propeller for power generation. Since we have provided a means to move it inside the ship on the water, during the power generation stop,
The generator unit can be retracted into the generator unit storage room to reduce water resistance. In addition, maintenance of the generator unit can be carried out onboard on the draft.

Power generation efficiency can be increased by using a contra-rotating propeller as the propeller for power generation in order to further increase efficiency in addition to a single propeller.

A foldable hard sail was used as the hard sail, so the sail area can be changed according to the strength of the wind. In addition, when operating independently in no wind, wind resistance can be eliminated by completely folding the sails. In addition, the use of a zigzag hard sail makes it possible to extend and retract the sail with a simple structure, and the carbon fiber honeycomb structure of the hard sail makes it lightweight and robust, making it easy to extend and retract the sail. It has an effect that can withstand use.

As a means of independent operation of the trimaran, a method of rotating the propeller of the generator unit with an electric motor to propel it, a screw propulsion method with a diesel engine, and a water jet propulsion system were provided, so that it can be quickly moved to a predetermined place after the typhoon disappears. can operate to

In addition to using a capacitor as a means of storing the electrical energy generated by the generator unit of the trimaran, the storage capacity can be reduced by providing a means of converting the electrical energy into hydrogen and storing it. .

In addition, since a typhoon-resistant vertical rotating shaft wind power generator is installed on the deck of the trimaran, additional wind power can be used to generate power.

1 is a perspective view of a trimaran for ocean current power generation according to an embodiment of the present invention; FIG. FIG. 2 is a plan view of FIG. 1; FIG. 2 is a back view of FIG. 1; FIG. 2 is a front view of FIG. 1; FIG. 5 is a cross-sectional view along the line AA of FIG. 4; The front view of a generator unit. FIG. 7 is a cross-sectional view along the line BB of FIG. 6; Perspective view of generator unit Partial perspective view of a rigid sail. Explanatory drawing for demonstrating the usage method of the hard wing sail of a folding structure. FIG. 4 is a front view of a hard sail according to another embodiment of the present invention; Fig. 12 is a side view showing a slightly folded state of the hard sail of Fig. 11; CC line sectional view of FIG. Explanatory drawing showing the course of a typhoon and the course of the trimaran for ocean current power generation of the present invention.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a perspective view of a trimaran for ocean current power generation of Example 1, FIG. 2 shows its plan view, and FIG. 3 shows its rear view.
A pair of side floats 3, 3 are provided on both sides of a main hull 2 having a tapered bow 20. - 特許庁
A pair of cylindrical ducts 4, 4 for power generation are provided below the deck 22 between the main hull 2 and the pair of side floats 3, 3.
Since the pair of cylindrical ducts 4, 4 for power generation are provided between the main hull 2 having the tapered bow 20 and the pair of side floats 3, 3, the bow 20 and the side floats of the tapered main hull are provided. A substantially triangular sea area is formed between the floats 3, and as the ship advances, the sea current is compressed and becomes a rapid flow and flows into the cylindrical duct 4 for power generation. It is possible to increase the rotation speed of the motor and improve the power generation efficiency. In order to further enhance this effect, it is preferable to cut the inside of the tip of the side float 3 obliquely as shown in FIG.

A total of four hard sails 51 for wind propulsion are attached to the front and rear of the main hull 2, two each. A front steering room 23 is provided in front of the main hull 2, and a rear steering room 24 is provided behind it. At the four corners of the deck 22 are provided generator unit storage chambers 25 for storing the propellers 62 in the cylindrical ducts during non-power generation.
An opening/closing door for maintenance of the generator unit is provided on the back side of the generator unit storage chamber 25 .
Four vertical rotating shaft wind power generators 7 are provided on each side of the deck 22 . Furthermore, two vertical rotating shaft wind power generators 7 are provided on each of the left and right side floats 3 .

FIG. 2 is a plan view of the trimaran 1 for ocean current power generation, and the bow 20 of the main hull 2 is tapered. A pair of side floats 3, 3 are provided on the left and right sides of the main hull 2. Generator unit storage rooms 25 are provided at four corners on the deck 22 . A front steering room 23 and a rear steering room 24 are provided at the front and rear of the main hull 2, respectively.
A single strut 52 to which a hard sail 51 is attached is attached to the turntable 21 in front of the main hull 2 .
A vertical rotating shaft wind power generator 7 is provided on the deck 22 and the side float 3 .

FIG. 3 is a rear view of the trimaran 1 for ocean current power generation.
is provided. A pair of cylindrical ducts 4 for power generation are attached between the main hull 2 and the pair of side floats 3 . The cylindrical duct 4 is fixed to each side surface of the main hull 2 and the side float 3 by U-shaped plates 43 for fixing the cylindrical duct. A screw 8 for self-propulsion is provided at the stern.

Generator units 6 are provided at the front and rear ends of the cylindrical duct 4 so as to be separable from the body of the cylindrical duct 4 . A stopper 44 is provided below the cylindrical duct 4 on the right side of FIG. 3 to prevent the generator unit 6 from falling too far.
The cylindrical duct on the left side of FIG. 3 is shown in cross section. A generator unit 6 is separably provided before and after the cylindrical duct 4, and a contra-rotating propeller 62 for power generation is provided therein. The front and rear ends of the fixing U-shaped plate 43 for fixing the cylindrical duct 4 to the main hull 2 and the side floats 3 function as stoppers 44 for preventing the generator unit 6 from being lowered too much. .

FIG. 4 is a front view of a trimaran for ocean current power generation. A pair of side floats 3, 3 are provided on the left and right sides of a main hull 2, and a pair of cylindrical ducts 4, 4 for power generation are present between them.
A forward steering room 23 and a hard sail 51 are provided on the main hull 2 , and a generator unit storage room 25 is provided through the deck 22 of the main hull 2 . A vertical rotating shaft wind power generator 7 is provided on the deck 22 . The electric power generated by each generator is charged in a battery in the battery storage 28 of the main hull ship 2 .

FIG. 5 is a cross-sectional view taken along line AA of FIG. The front portion of the cylindrical duct body 41 is cut away to form a cylindrical duct separation 42 . The entire generator unit container 61 containing the front and rear contra-rotating propellers 621 and 622 and the front and rear generators 631 and 632 is collectively referred to as a generator unit 6 .
That is, as shown in FIG. 8, the power generation unit includes front and rear contra-rotating propellers 621,
Cylindrical duct separation part 42 with built-in 622, and front and rear generators 631 on partition plate 614,
632 are accommodated in the generator unit container 61 to form an independent box.
In addition, 613 in the figure is the upper plate of the container 61 .
As shown in FIG. 5, the generator unit 6 is configured to be vertically movable within the generator unit storage chamber 25 . That is, the generator unit 6 is tethered to the hoist 26 by the rope 27 and can move up and down in the generator unit storage chamber 25 .
The main hull 2 and the side float 3 are connected by a U-shaped plate 43 for fixing the cylindrical duct. The front end of the U-shaped plate 43 also functions as a stopper 44 for the generator unit 6 that moves up and down.

A configuration is shown in which the generator unit 6 suspended by the rope 27 from the hoist 26 in the generator unit storage chamber 25 provided through the deck 22 of the main hull ship 2 can move up and down.
That is, when the upper part of the generator unit 6 is inserted into the bottom of the generator unit storage chamber 25 whose bottom is open, and the rope 27 is hoisted up by the hoist 26, the generator unit 6 is positioned above the draft surface 9. can move. When the rope 27 is lowered, the generator unit 6 is lowered, and the cylindrical duct fixing U
It is fixed at the position of the stopper 44 at the front end of the dial 43 .

FIG. 6 is a front view of the generator unit 6 and the generator unit storage chamber 25 in which it is housed, and FIG.
6 is a cross-sectional view taken along line BB of FIG. The upper portion of the generator unit 6 is inserted into the open bottom of the generator unit storage chamber 25 . The lower part of the generator unit 6 is moved further downward by a stopper 44 connected to the front end of a cylindrical duct fixing U-shaped plate 43 for fixing the main body of the cylindrical duct to the sides of the main hull and side floats. prevent you from doing so. A sliding door 252 is provided behind the generator unit storage chamber 25 for maintenance of the generator unit 6 lifted upward (see FIG. 7).
The contra-rotating propeller 62 is attached to a rotating shaft 616 provided on a bearing strut 615 provided in the cylindrical duct separation portion 42 .
As shown in FIG. 7, a contra-rotating propeller is built in the generator unit 6, and the rotational force of the front propeller 621 is transmitted by the bevel gear 64 to the front generator 631 via the vertical rotation shaft 617 and the bevel gear 65. be done. The rotational force of the rear propeller 622 is transmitted by the bevel gear 64 to the rear generator 632 via the vertical rotary shaft 617 and the bevel gear 65 . generator 63
The electric power generated at 1,632 is stored in the capacitor in the capacitor storage 28 .

FIG. 9 is a partial perspective view for explaining the structure of the hard sail.
An upward protrusion bearing 512 and a downward protrusion bearing 513 are provided at the upper and lower ends of a hard wing sail plate 511 formed of metal, glass fiber reinforced plastic, carbon fiber reinforced honeycomb structure, or the like. The six hard sail plates 511 are connected by rotating shafts 514 to form one hard sail 51 . At that time, the pipe 5 of the slide ring 515 is attached to every other protrusion bearing of the hard blade sail plate 511 to be connected.
16 is inserted into the space in the center of the projection bearing, the rotating shaft 514 is passed through and fixed with a nut 518 .
In order to attach the hard sail 51 to the strut 52, as shown in FIG.
, the third hard wing sail plate 511 , and the joints of the fourth and fifth hard wing sail plates 511 .
15 is attached. The surface of the sliding ring 515 is coated with silicon resin to improve the sliding with the strut 52 .

FIG. 10 is an explanatory diagram for explaining how to use the folding hard sail. As shown in FIG. ing.
The support 52 is erected on the turntable 521 . The turntable 521 is rotatably mounted on a washer 523 fixed on the deck 22 via a ball bearing 522 . A rotary shaft 538 fixed under the turntable 521 passes through the washer 523 and is connected to the bevel gear 524 . Bevel gear 524 is a ball bearing on stand 525
It is rotatably supported via 522b.
When a rope 527 is connected to the hard wing plate 511 at the top end and hoisted by a hoisting machine 528 through a pulley 526, the hard wing plate 511 is spread as shown in FIG. figure(
C) is expanded.
To lower the unfolded hard wing sail plate 511, the hoisting machine 528 is unlocked so that it can be folded by its own weight. .

As Example 2, a trimaran for ocean current power generation using hard sails having two struts will be described. FIG. 11 is a front view of a hard sail with double post struts.
The two-pillar hard sail 53 is attached with a sliding frame 534 by connecting six hard sail plates 531 to two struts 54 . Also, two reinforcing pieces 535 are attached to the hard wing sail plate of the first layer. The two struts 54, 54 are connected at their upper ends by a strut fixing piece 541,
The lower end is fixed to the turntable 537 .
A connecting plate 533 for attaching a sliding frame 534 is prepared on the first layer hard wing sail plate 531 . The first layer hard wing sail plate and the second layer hard wing sail plate are connected by a connecting plate 532 so as to be flexible. A connecting plate 533 with a sliding frame is connected between the second layer hard wing sail plate and the third layer hard wing sail plate so as to be flexible.
Similarly, the third layer hard sail plate and the fourth layer hard sail plate are connected by a connecting plate 532, and the fourth layer hard sail plate and the fifth layer hard sail plate are used for sliding frames. Connected by a connecting plate 533, the fifth layer hard sail plate and the sixth layer
The hard sails of the layers are connected by connecting plates 532 .
The hard wing sail board 531 of the sixth layer at the bottom end is reinforced with two reinforcing pieces 535, and its lower end is fixed to the turntable 537. As shown in FIG.

The hard wing sail plate 531 is formed of flat plates of carbon fiber reinforced orthogonal fabric impregnated with epoxy, and honeycomb layers made of glass fiber reinforced epoxy resin made by Showa Aircraft Co., Ltd. are laminated between the flat plates. It is constructed by laminating nine layers.
A hard sail with an epoxy-impregnated carbon fiber reinforced honeycomb structure is impregnated with Mitsubishi Chemical's glycidylamine type epoxy resin and Mitsubishi Chemical's dicyandiamide curing agent, and is cross-woven with Toho Tenax's carbon fiber (W -3101), laminated and bonded with a honeycomb manufactured by Showa Aircraft Co., Ltd., and cured and press-molded in a hot furnace to create a material for a three-layer hard sail with a thickness of about 5 mm.
Next, a long molded core made of polyester resin and filled with expanded polystyrene and having a trapezoidal cross section was formed, and then coated with a glycidylamine type epoxy resin manufactured by Mitsubishi Chemical and a dicyandiamide curing agent manufactured by Mitsubishi Chemical. Carbon fiber HTS40-12K made by Toho Tenax
The surrounding surface is reinforced by winding technology and heat-cured in a large furnace to create a trapezoidal reinforcing structure with carbon fiber reinforcement that is cured with epoxy resin, and to manufacture the reinforcing body for the joining part of the hard sail (winding technology is See Japanese Patent No. 6663626 and Japanese Unexamined Patent Publication No. 01-113227).
In addition, the sliding frame 534 is molded with epoxy resin-impregnated carbon fiber reinforced winding, and the connecting piece 5
6 is joined with a strong adhesive.

FIG. 12 is an explanatory diagram showing a state in which the hard sail is extended. A rope 527 is hung on a pulley 526 attached to a column fixing piece 541 , and the rope 527 is hoisted up by a hoist (not shown) to pull up the hard sail 53 . Each hard wing sail plate 531 and connecting plate 533, hard wing sail plate 531 and connecting plate 53
2 are connected by hinges 539, each hard wing plate is bent as shown in the figure. A sliding frame 534 is connected to the sliding frame connecting plate 533 via a connecting piece 56, and the sliding frame 534 is fitted to the support 54 so as to slide up and down.

13 is a cross-sectional view taken along line CC of FIG. 12 and is a detailed view of the sliding frame 534. As shown in FIG.
A square post 54 is fitted into a square blank inside the cross-shaped sliding frame 534 . sliding frame 53
4, rubber rollers 55 are rotatably mounted on rotating shafts 551 supported by bearings 552. The rubber rollers 55 are in contact with the respective surfaces of the square support 54. As shown in FIG.
The sliding frame 534 is connected to the sliding frame connecting plate 533 of the hard sail by means of the connecting piece 56 and the sliding frame mounting plate 57 connected thereto. The sliding frame connecting plate 533 is clamped between the sliding frame mounting plate 57 and the sliding frame mounting plate 58 independent therefrom and fixed with a clasp 581 . Reference numeral 537 in the drawing denotes a turntable on which two pillars 54 are erected.
The sliding frame shown in FIG. 13 is formed by bending one metal plate into two sliding frames 53.
4. The connecting piece 56 and the sliding frame mounting plate 57 can be manufactured integrally.

FIG. 14 is an explanatory diagram showing the course of a typhoon, the course of the ocean current power generation trimaran of the present invention, and the angles of the hard sails.
Typhoon R1 (R2 is the eye of the typhoon) rotates clockwise and the wind force gradually increases. Therefore, when the force of the typhoon is strong in S1, the trimaran for power generation T1 is positioned behind and to the left of the typhoon, and the angle of the hard sail is directed in the direction of 5 o'clock to 11 o'clock, which is the same as the course direction P of the typhoon. It sails in direction Q and generates ocean current power. If the wind is a little strong, at S2, place the trimaran at T2, turn the angle of the hard sails in the direction of 4 o'clock to 10 o'clock, and sail in the direction of the typhoon's course Q to generate power from the ocean current. . For slightly less wind S3, position the trimaran at T3 with the hard sail angled in the direction of 3 o'clock to 9 o'clock.
Approximately 50 to 1,000 such trimarans are lined up and sailed to absorb the force of the typhoon and generate electricity while weakening the force of the typhoon.
When the power generation of the typhoon is stopped, the self-propulsion screw 8 is used to move to the home port or the place where the tidal current power generation is performed, and the power generation is performed in the moored state. In the case of self-propulsion, the generator unit 6 is lifted into the generator unit storage room 25 to reduce the resistance of the ocean current caused by the generator unit 6 .

1. Trimaran for ocean current power generation2. Main hull 3 . side float4. Cylindrical duct 51 . Hard sail6. generator unit 7 . Vertical rotary shaft type wind power generator8. propulsion screw

Claims (6)

A trimaran sailing with hard sails, having a pair of side floats on either side of a main hull with a tapered bow, a pair of long cylindrical ducts under the draft between the main hull and the side floats. is provided, a propeller for power generation that rotates due to ocean currents is provided in the cylindrical duct, and the propeller for power generation
Cylindrical duct separating part and power generation
A generator unit integrated with a generator that generates electricity with a propeller is moved inside the hull above the draft.
A trimaran for ocean current power generation suitable for strong winds, characterized in that it is provided with generator unit moving means for moving. As the generator unit moving means, one type selected from the group of a hoist that suspends and moves the generator unit up and down with a rope, a pantograph type vertical movement device, a vertical movement device that uses a piston, and a vertical movement device that uses a rack and pinion. or two or more of them in combination. The trimaran suitable for strong winds according to claim 1, characterized in that contra-rotating propellers are used as said propellers for power generation. A trimaran suitable for strong winds as claimed in claim 1, characterized in that a foldable hard sail is used as said hard sail. 5. The trimaran suitable for strong winds as claimed in claim 4 , wherein a serpentine hard sail is used as the foldable hard sail. Claims 1, 4 and 4, characterized in that the hard sail is configured in a carbon fiber reinforced honeycomb structure.
6. A trimaran for ocean current power suitable for high winds according to any one of claims 1 and 5 .

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