JP3063354U - Tidal current turbine - Google Patents

Abstract

(57) [Problem] To provide a tidal current power generation turbine capable of efficiently obtaining a strong rotational output in tidal current power generation using a tidal current, which can be put to practical use. SOLUTION: An arm 2 is provided on the circumference of both right and left sides of a rotating shaft 1.
A, 2A are radially extended at regular intervals, and the substantially central portion of the arm and the extended end are connected by connecting rods 2B, 2B, respectively, to form side frames 2, 2, and the side frames 2, 2 are formed. A tidal current turbine with one end pivotally supported so that the blade plate 3 can swing freely in an angle range of 45 to 90 degrees with the wing plate 3 facing outward, and a tidal current turbine for tidal current A tidal power generation turbine that is connected to a plurality of tidal power generation turbines at equal positions shifted so that the bearing positions do not match, and installed on a catamaran and rotated by the tidal current.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a tidal turbine for tidal power generation that can efficiently obtain a strong rotational output in tidal power generation using tidal currents.

[0002]

[Problems to be solved by conventional techniques and devices]

 Tidal currents generated by the ebb and flow of the tide are a clean energy source that can be obtained at regular intervals every day without the cost of raw materials. Therefore, power generation using tidal currents has been attracting attention. As a power generation method using a tidal current, a method of rotating a turbine by the tidal current and driving a generator has been generally used, and many proposals have been made, but they are not practically used at present.

It is considered that one of the reasons is that the rotation output of a water turbine for obtaining practically usable electric power due to a tidal current cannot be obtained powerfully and efficiently. Generally, in order to rotate the turbine by the tidal current and drive the generator to generate electricity, it is necessary to considerably increase the speed of the obtained turbine because the rotation of the turbine is low, and the power that can be used for practical use In order to achieve this, it is necessary to take measures to make the rotation output of the turbine high and efficient, but in the tidal current power generation that has been conventionally proposed, the rotation output of the turbine can be obtained strongly and efficiently. There are issues where such measures have not been taken sufficiently.

[0004]

[Means for Solving the Problems]

 The inventor of the present invention has conducted intensive research, simulated trial production, and tests to obtain a powerful and efficient rotation output of a water turbine in tidal power generation. It is intended to provide a water turbine. (1) Arms are extended radially around the circumference of the rotating shaft at equal intervals, and the extending ends are connected. This is a tidal turbine for tidal power generation, in which a large number of supported blades are arranged at equal intervals, installed on a catamaran, and rotated by the tidal current. (2) One end of the wing plate is rotatably supported substantially at the center of the arms of the left and right frames that extend radially at equal intervals, and a stopper is attached to the outer periphery of the left and right frames to attach the wing. The tidal turbine according to (1), wherein the other end of the plate is stopped so that the blade plate can be swung outwardly in an angle range of 45 to 90 degrees. is there. (3) A plurality of water turbines, which are pivotally supported so as to be rotatable in a certain angle range with the blades directed outward and are arranged at equal intervals, are connected to a plurality. A tidal power generation turbine according to (1) or (2). (4) The tidal power turbine as described in (3) above, wherein the blades of the plurality of connected turbines are connected by being equally displaced so that the positions of the blades of the turbines do not match.

[0005]

[Embodiment of the invention]

 An embodiment of the present invention will be described with reference to the drawings showing the embodiment. As shown in FIG. 1, arms 2A and 2A are radially extended around the right and left sides of the rotating shaft 1 at equal intervals. A substantially central portion of the arm and the extending end are connected by connecting rods 2B and 2B, respectively, to form side frames 2 and 2, and a wing plate 3 is provided between the side frames 2 and 2 at a predetermined angle. One end is pivotally supported so that it can swing freely within the range, and a large number are arranged at equal intervals.

In order to reduce the weight of the rotating shaft 1 using a material having good corrosion resistance such as stainless steel, shafts 1A and 1A having key grooves 1a and 1a formed at both ends of a hollow pipe as shown in FIG. Is integrated by welding, but may be integrally processed with a solid material.

The arms 2A, 2A, which extend radially around the circumference of the left and right sides of the rotating shaft 1 at equal intervals, and the center and the extending end thereof are connected by connecting rods 2B, 2B, respectively. A hole for supporting the blade plate 3 is formed substantially at the center of 2A, and the connecting rods 2B and 2B connected to the extending ends are stoppers 4 for stopping the vibration of the blade plate 3 within a certain angle range. The side frames 2 and 2 are formed by drilling holes for mounting the same, and the side frames are formed using a stainless steel hollow pipe having good corrosion resistance.

The diameter of the side frame 2 is approximately 3 to 6 meters, the interval between the left and right side frames is approximately 1 to 1.5 meters, and in this embodiment, the arms 2A radially extended are , And 30 arms, but is not limited thereto, and may be increased or decreased as needed.

As shown in FIG. 2, the blade plate 3 is formed by welding a hollow tube to one end and integrally using a stainless steel plate having good corrosion resistance. The shaft 5 is inserted through a hole formed in a substantially central portion of each of the arms 2A and 2A and a hole formed in the bearing tube 3A of the blade plate 3 so that another end is formed as shown in FIG. As shown in (1), the blade 4 is stopped outward by the stopper 4 so that the blade 3 can swing freely within a certain angle range X, and it is preferable that the tip of the blade be slightly more than the stopper.

As shown in FIG. 2, the stopper 4 is cut using a stainless steel pipe having good corrosion resistance so as to have a length corresponding to the interval between the left and right frames 2, 2. The connecting rods 2B, 2B at the protruding ends are drilled into holes, and are fixedly fastened through supporting bolts 7 so as to be sandwiched between the right and left frames 2, 2, and rubber stoppers 8, 8 are provided at both ends of the stopper 4, for example. , Etc., so that the impact of the wing plate 3 can be reduced.

The operation and operation of the present invention constructed as described above will be described. As shown in FIG. 3, the lower part of the water turbine is set so that the pivot portion of the lowermost blade plate 3 does not contact the sea surface. Soak below. The flow of the tidal current is opposite at high tide and low tide, but the operation and action are the same in the opposite direction. If the tide is in the direction of arrow a as shown in the figure, the rotation of the water turbine will be in the direction of b, and the blade plate 3 The half is turned to the right (C direction) and the left half is turned to the left (two directions) and stopped by the stopper 4. However, under the sea surface, the stopper is pushed by the tide in the direction of arrow A until just before water separation. The state is stopped at 4.

When the blades 3 enter the sea surface due to the rotation of the water wheel, the tip is directed downward, so that the surface pressure is reduced. At the same time, when the water leaves the sea surface, the sea surface is forcibly pushed up. However, since the blade plate separates water while rotating downward, the drag is reduced, and the rotation output of the turbine and the smooth rotation can be obtained.

[0013]

【Example】

 Referring to FIG. 4 showing an embodiment of a water turbine in which a plurality of water turbines are connected as described above, an embodiment of a water turbine connected in a quadruple manner will be described. And are connected by a coupling 10. It is preferable that a self-aligning type ball bearing is used as the bearing 9, and it is preferable that a sufficient lubricant can be supplied to a rolling portion of the ball bearing. The couplings 10 are attached and fixed to key grooves 1a provided at both ends of the rotating shaft of each turbine with a key material interposed therebetween, and connect the respective turbines.

Further, the connected turbines are connected to each other so as to be equally displaced so that the axial support positions of the blade plates 3 do not coincide with each other. For example, when a water turbine having 12 blades is used in a quadruple type as in the embodiment of the present invention, the blades 3 are supported by arms extending radially at an angular interval of 30 degrees. By shifting the pivot position of the slats at an angle of 7.5 degrees at 30５4 = 7.5, the pivot positions of the slats do not match and can be equally displaced. .

[0015] By connecting a plurality of water turbines as described above and displacing them equally so that the pivot positions of the blade plates do not coincide with each other, the number of turbines is several times as large as in the case of using a water turbine alone (this embodiment). (In the example, 4 times), the rotation output is increased, and a strong rotation output and smooth rotation can be obtained.

An embodiment in which the water turbines connected as described above are installed on a catamaran to generate power will be described with reference to FIG. 5. In the catamaran 11, a ballast tank 11A and a ballast tank 11A are provided on both left and right sides of the lower part of the hull. Along the length of the tidal stream, forming a flow channel for the tidal current. Protective fences 11B and 11B are provided at the front and rear ends of the flow channel to keep the hull in a well-balanced state and to change the tide level. To prevent the inflow of suspended matter and obtain a stable tidal current.

At two locations before and after the upper surface of the hull of the catamaran 11, four-wheeled water turbines are installed, each supporting a rotary shaft by a bearing, and the lower portion of the turbine is mounted on the upper surface of the hull. By drilling a cutout hole, it protrudes into the flow channel of the tidal current at the bottom of the hull, and the level of ballast in the ballast tank can be adjusted by adjusting the amount of ballast in the ballast tank so that the shaft support of the blade plate of the lowest turbine does not contact the sea It is like that.

Gearboxes 12 and 12 are directly connected via couplings to both ends of a rotary shaft of a four-stage water turbine installed at two positions in front of and behind the upper surface of the hull, and are connected to output shafts of the gearbox. By rotating the driven pulleys 14, 14 via a belt from the pulleys 13 fixed to the shaft 13, the shaft 16 is rotated, and the pulley 16 fixed to the shaft via the belt is rotated from the pulley 16 fixed to the shaft. The pulley 18 fixed to the input shaft of the generator 17 is rotated to drive the generator 17.

Although the rotational output of the water turbine obtained by the tidal current can be obtained strongly, the rotational speed is generally low, so that in order to drive the generator 17 by increasing the rotational speed, a corresponding rotational torque is required. Since the rotational torque is concentrated only at one end of the rotating shaft of the hanging turbine, in FIG. 5, gearboxes 12 are arranged at both ends of the turbine so that the rotation can be smoothly transmitted. Although shown in the embodiment in which six units are installed, the present invention is not limited to this, but increases or decreases according to the rotation output of the water turbine, and the layout of the rotation transmission mechanism and the generator is also limited to this embodiment. is not.

[0020]

[Effects of the Invention] As described above, the tidal power turbine according to the present invention has the arms extending radially around the circumference of the rotating shaft at equal intervals and between the left and right side frames connecting the extending ends. Since a large number of blades are supported at equal intervals so as to be rotatable outwardly in an angle range of 45 to 90 degrees, water at the time of water entry and water separation of the blades is provided. Resistance is reduced, which is effective in increasing rotation output and obtaining smooth rotation.

[0021] In addition, the water turbine constructed as described above is connected to a plurality of turbines, and the blades are connected so as to be equally displaced so that the pivot positions of the blades do not coincide with each other. The rotation output can be increased several times, which is effective in obtaining a strong rotation output and smooth rotation.

Further, by installing the water turbine configured as described above on the catamaran and generating tidal current, the hull can be well-balanced while responding to changes in tide level, and a stable tidal current can be obtained. This is effective for increasing the rotation output and efficient rotation of the turbine, and is effective for generating power that can be used for practical use.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a tidal power turbine according to the present invention.

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a side sectional view showing an embodiment of the operation and operation of the tidal current turbine according to the present invention.

FIG. 4 is a plan view showing an embodiment in which the present invention is connected to a plurality (four-row type).

FIG. 5 is a plan view showing an embodiment in which the present invention is connected in a quadruple system and installed on a catamaran to generate tidal current.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotating shaft 1A shaft 1a Keyway 2 Side frame 2A Arm 2B Connecting rod 3 Blade plate 3A Bearing tube 4 Stopper 5 Spacer 6 Shaft bolt 7 Support bolt 8 Rubber ring 9 Bearing 10 Coupling 11 Catamaran 11A Ballast tank 11B Protection Fence 12 Gear box 13, 14, 16, 18 Pulley 15 Shaft 17 Generator

Claims (4)

[Utility model registration claims] An arm extends radially around the circumference of a rotating shaft at equal intervals, and swings outward in a fixed angle range outwardly between left and right side frames to which extended ends are connected. A water turbine for tidal power generation, comprising a large number of impellers supported at equal intervals, installed on a catamaran and rotated by the tidal current. 2. One end of a blade plate is rotatably supported at substantially the center of the arms of the left and right frames which are radially extended at equal intervals, and stoppers are attached to the outer peripheral portions of the left and right frames. The water for tidal power generation according to claim 1, wherein the other end of the blade plate is stopped so that the blade plate can swing freely in an angle and range of 45 to 90 degrees toward the outside. car. 3. A plurality of water turbines, which are pivotally supported so as to be rotatable in a certain angle range with their blades directed outward and are arranged at equal intervals, are connected. The tidal power turbine according to claim 1 or 2, wherein 4. The tidal power turbine as claimed in claim 3, wherein the blades of the plurality of connected turbines are connected so as to be equally displaced so that the positions of the blades do not match.