JP2019138215A - Power generation device - Google Patents

Abstract

To provide a power generation device which causes a rotating member to rotate using the flow of a plurality of fluids thereby making it possible to stabilize the rotation of the rotating member and perform stable power generation.SOLUTION: The power generation device comprises: a floating base 10 with a flow passage 11 through which a fluid flows; a rotating member 20 that is rotatably supported by a support part 1 disposed on the floating base 10 and rotates about an axis by means of the flow of the fluid through the flow passage 11; and a rotation transmitting mechanism 60 that transmits the rotation of the rotating member 20 to a power generation part 50 mounted on the floating base 10. On the inlet opening 11a side of the flow passage 11 in the floating base 10, a fluid introduction part 30 is formed that takes in wind and water as fluids from an intake opening 31 formed to have a larger opening area than the inlet opening 11a and causes the fluids to flow into the inlet opening 11a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power generator.

  In recent years, wind power generators have attracted attention due to an increase in environmental awareness. A small wind power generator can be installed basically anywhere where there is wind. A wind turbine generator is installed as a facility that plays a role of supplying power to ancillary facilities such as lighting in a common area in buildings where there is a large demand for electric power, or supplementary power in the event of a power failure, etc. , Is expected to be utilized. The wind power generator is installed, for example, around a building such as a building or on a rooftop. As an example of an apparatus used for such a wind power generator, Patent Document 1 discloses a wind collecting wind turbine.

  The wind-collecting wind turbine disclosed in Patent Document 1 is integrally configured from a front wind tunnel, an intermediate wind tunnel in which the wind turbine is installed, and a rear wind tunnel. The front wind tunnel has a wind inlet, and is configured such that a cross-sectional area thereof is reduced between the wind inlet and a connection portion with the intermediate wind tunnel, The reduced cross-sectional area of the wind tunnel is configured to increase or maintain the same cross-sectional area up to the connection with the rear wind tunnel. The rear wind tunnel has a wind outlet, and a cross-sectional area thereof is configured to expand from a connection portion with the intermediate wind tunnel to the wind outlet.

JP 2006-1001 A

  By the way, the conventional wind-collecting type windmill is configured to collect wind and rotate the windmill. However, since the structure depends only on the wind, when the wind speed is low, the windmill rotates. Since the speed is low, there is a problem that stable power generation cannot be performed.

  The present invention has been made in view of the above circumstances, and provides a power generation apparatus capable of stabilizing the rotation of a rotating member by rotating the rotating member using a plurality of fluid flows and performing stable power generation. For the purpose.

  In order to achieve the above object, a power generator according to the present invention is rotatably supported by a buoy with a flow path through which a fluid flows, and a support provided on the buoy. A rotating member that rotates about an axis by the fluid flow; and a rotation transmission mechanism that transmits the rotation of the rotating member to a power generation unit installed on the buoy. The inlet side is formed with a fluid introduction part that takes in the wind and water as the fluid from an inlet formed with an opening area larger than the inlet, and allows the fluid to flow into the inlet. Features.

  According to such a configuration, even when one flow rate of wind or water is low, the rotation of the rotating member is maintained by the other flow rate, and thus stable power generation can be performed. Further, since the rotating member is rotated using both the flow of wind and water, the rotating member rotates at a high speed, and a larger amount of power generation can be obtained.

  In the configuration of the present invention, it is preferable that the fluid introduction portion is formed so that a cross-sectional area of the flow path becomes smaller from the intake port toward the inflow port.

  According to such a configuration, the flow rate of the taken wind and water can be increased and then flowed into the inflow port. For this reason, even if the flow rate is low, the rotating member can be rotated at high speed to stabilize power generation.

  In the configuration of the present invention, it is preferable that the support portion supports the rotating member so that a tangential direction of an outer periphery of the rotating member coincides with a flow direction of the fluid in the flow path. .

  According to such a configuration, since the wind and water hit the outer peripheral portion of the rotating member, the rotating member can be rotated more efficiently. Thereby, electric power generation can be stabilized and electric power generation amount can be enlarged more.

  In the above configuration of the present invention, the rotating member includes thin plate-like blades erected at predetermined intervals along the circumferential direction on a radially outer side surface. It is preferable that the center part of the width which is the dimension with respect to an axial direction becomes the curved shape which protruded toward the rotation direction of the said rotation member.

  According to such a configuration, since the wind and water that hit the blades are prevented from escaping outward in the width direction, the flow of wind and water is more efficiently used for the rotation of the rotating member, and the rotating member is Rotate faster. Thereby, electric power generation can be stabilized and electric power generation amount can be enlarged more.

  ADVANTAGE OF THE INVENTION According to this invention, the electric power generating apparatus which can perform the stable electric power generation can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view which shows the electric power generating apparatus which concerns on embodiment of this invention, and shows an external appearance. It is the same front view seen from the front and has shown the state which removed the foreign material removal part. FIG. 3 is a view showing the rotating member, and FIG. 3A is a side view of the rotating member as viewed from the left side. FIG. 3B is a front view of the rotating member as viewed from the front. FIG.3 (c) is the perspective view which looked at the rotation member from the front side. It is the perspective view seen from the back side same as the above. It is a side view for demonstrating the positional relationship of a flow path and a rotation member equally. It is the top view seen from the same as the above. It is the side view seen from the left side. It is a perspective view which shows the external appearance of a power generation part. It is an axial sectional view of the power generation unit. It is sectional drawing for demonstrating the relationship between an electric power generation part and a rotation member equally. It is an enlarged view which shows the rotation mechanism which transmits rotation of a rotation member to an electric power generation part similarly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an external appearance of the power generation apparatus 100. The power generation apparatus 100 includes a buoyancy platform 10, a rotating member 20, a fluid introduction unit 30, a foreign matter removal unit 40, a power generation unit 50, and the like.
The power generation apparatus 100 is installed on water such as a river or the sea, and rotates the rotating member 20 using a fluid flow to generate power. Hereinafter, the fluid introduction unit 30 side in the power generation apparatus 100 is referred to as “front”, and the side opposite to the fluid introduction unit 30 side is referred to as “rear”. Further, when the power generation device 100 is viewed from the front, the upper end side of the power generation device 100 is “upper”, the lower end side is “lower”, the right end side is “right”, and the left end side is “left”.

The power generation device 100 includes a trapezoidal floating base 10 having a substantially rectangular shape when viewed from above. The floating base 10 is formed of a member that floats on water. Hereinafter, although the case where the floating base 10 is formed in a rectangular shape will be described, the shape of the floating base 10 is not limited to this, and may be a square shape or the like.
A flow path 11 is formed along the longitudinal direction at a substantially central portion in the lateral direction of the buoy 10. The flow path 11 is a groove formed in a U-shape in cross section, and a part of the bottom part and the side part is arranged at a position lower than the water surface. The power generation apparatus 100 takes in the fluid from one end side in the longitudinal direction of the flow path 11 and rotates the rotating member 20 using the flow of the fluid so as to discharge the fluid from the other end side in the longitudinal direction of the flow path 11. It has become. The direction of the fluid flowing through the flow path 11 and the axial direction of the rotating member 20 are orthogonal to each other. The channel 11 includes a fluid inlet 11a and a fluid outlet 11b (shown in FIG. 4).

  A fluid introduction part 30 for taking in more fluid is provided on the inlet 11a side of the buoy 10. The fluid introduction part 30 is demonstrated using FIG. FIG. 2 is a front view of the power generation device 100 as viewed from the front, and shows a state where the foreign matter removing unit 40 is removed. The fluid introduction part 30 is formed to have a quadrangular shape when viewed from the front side. The fluid introduction part 30 includes an intake port 31 formed with an opening area larger than that of the inflow port 11a. The fluid introduction part 30 has four plate members 32a, 32b, 32c, and 32d extending from the upper and lower horizontal edges of the intake port 31 and the left and right vertical edges of the intake port 31 toward the inflow port 11a. Yes. The fluid introduction part 30 is formed so that the cross-sectional area of the flow path decreases as it goes from the intake port 31 toward the inflow port 11a. The lengths of the left and right vertical edges and the upper and lower horizontal edges of the inflow port 11a are sufficiently shorter than the lengths of the vertical and horizontal edges of the intake port 31. As a result, the fluid introduction unit 30 takes in a large amount of fluid from the intake port 31, and the flow is bent (squeezed) by the plate members 32a, 32b, 32c, and 32d to form a high-density fluid that flows into the inlet 11a. It is supposed to let you.

  The fluid introduction unit 30 includes an air collection unit 33 and a water collection unit 34. The air collecting part 33 is a part formed in a position higher than the water surface F in the fluid introducing part 30. The air collecting unit 33 takes in the wind and causes the taken-in air to flow into the inflow port 11a. On the other hand, the water collection part 34 is a site | part currently formed in the position (submersion position) lower than the water surface F among the fluid introduction parts 30. FIG. The water collecting unit 34 takes in water and flows the taken-in water into the inflow port 11a. Thus, both wind and water flow into the inflow port 11a.

  FIG. 3A is a side view of the rotating member 20 as viewed from the left side. FIG. 3B is a front view of the rotating member 20 as viewed from the front. FIG. 3C is a perspective view of the rotating member 20 as viewed from the front side. The rotating member 20 includes a rotating plate 21, a blade 22, a rotating shaft 23, and a large diameter ring gear 24. The rotating plate 21 has a disc shape, and the width that is the dimension in the axial direction is determined in accordance with the width of the flow path 11. On the radially outer side surface of the rotating plate 21, a plurality of blades 22 are erected at predetermined intervals along the circumferential direction. The blade 22 is a thin plate-like member, and is formed so as to protrude in the direction toward the radially outer side from the rotation center of the rotating plate 21. A plurality of blades 22 are also provided side by side in the axial direction of the rotating plate 21. Here, when the dimension of the blade 22 with respect to the axial direction of the rotating member 20 (the rotating plate 21) is a width, the blade 22 has a curved shape in which a substantially central portion in the width direction protrudes in the rotating direction of the rotating member 20. It has become. By adopting such a curved shape, the fluid hitting the blades 22 is prevented from escaping to the outside in the width direction, and the flow of the fluid is used for the rotation of the rotating member 20 more efficiently.

  The rotating shaft 23 is fixed to the rotating plate 21 in a state in which a hole provided at the rotation center of the rotating plate 21 is penetrated in the axial direction. Both end portions of the rotating shaft 23 protrude from side surfaces on both sides in the axial direction of the rotating plate 21, and the shape thereof is a stepped columnar shape. The large-diameter ring gear 24 is fixed to side surfaces on both sides in the axial direction of the rotary plate 21 with the rotary shaft 23 inserted through a hole provided in the center. The large diameter ring gear 24 rotates integrally with the rotating plate 21. The large diameter ring gear 24 meshes with a small diameter ring gear 61 described later.

  FIG. 4 is a perspective view of the power generation device 100 as seen from the rear side. A pair of support portions 1 and 1 that rotatably support the rotating member 20 are provided on the upper surface of the floating base 10 in a state where the axial direction of the rotating member 20 is orthogonal to the flow path direction of the flow path 11. . The support parts 1 and 1 are formed in a bowl shape, and support the rotating shaft 23 of the rotating member 20 so as to be sandwiched from both sides in the axial direction.

  FIG. 5 is a side view for explaining the positional relationship between the flow path 11 and the rotating member 20. As shown in FIG. 5, the vertical distance between the rotating shaft 23 and the upper surface of the buoy 10 in the state where the rotating member 20 is supported is defined as the shaft support height S of the support portion 1. The shaft support height S of the support portion 1 is such that the tangential direction of the outer periphery of the rotating member 20 matches the flow direction of the fluid in the flow path 11, and the fluid flowing in the flow path 11 hits the outer peripheral portion of the rotating member 20. Is set. Note that the term “match” here means not only a complete match but also a substantially match. Further, as shown in FIG. 5, in a state where the rotating member 20 is supported at the shaft support height S, a part of the radially outer side of the rotating member 20 is at a position lower than the water surface F of the flow path 11. . The amount of submersion of the rotating member 20 can be adjusted by changing the shaft support height S of the support portion 1.

  Since it is configured as described above, the wind and water flowing through the flow path 11 efficiently hit the plurality of blades 22 one after another to rotate the rotating member 20. Thereby, the rotating member 20 rotates smoothly. Moreover, since the fluid utilized for rotation of the rotation member 20 is discharged | emitted from the back discharge port 11b, rotation of the rotation member 20 is not prevented.

FIG. 6 is a plan view of the power generation device 100 as viewed from above. FIG. 7 is a side view of the power generation device 100 as viewed from the left side. Warning lights 2 are installed at the upper ends of both sides of the air collecting unit 33 in the left-right direction. The warning light 2 is, for example, an LED or an incandescent bulb. The warning light 2 is installed to indicate the presence of the power generation device 100 in a surrounding ship or the like. The warning lights 2 are also installed on both the left and right upper surfaces on the rear side of the floating base 10. Moreover, the warning light 2 is also installed at the upper end of a support column 41 to be described later.
Further, a bypass instruction unit 3 is formed at the upper end of the air collecting unit 33. The detour instruction unit 3 is, for example, an arrow-shaped plate member, and is bonded and fixed to the air collecting unit 33. The detour instruction unit 3 is bonded to the front side surface and the rear side surface of the air collecting unit 33. The detour instruction unit 3 is provided for encouraging surrounding ships and the like to detour. Further, the detour instruction unit 3 is also formed on the side surface on the rear side of the floating base 10.

  As shown in FIG. 2, the anchor chain 4 is connected to the opening of the water collecting portion 34 formed integrally with the buoy 10. The anchor chain 4 may be a cable or the like in addition to the chain. A hook 5 is attached to the tip of the hook chain 4. The cage 5 is, for example, a metal weight. In a state where the ridge 5 is submerged in the water and is in contact with the bottom of the water, the floating base 10 does not drift but stays at a certain place.

As shown in FIGS. 6 and 7, a foreign matter removing unit 40 is formed on the front side of the opening in the water collecting unit 34. The foreign matter removing portion 40 is formed so that the shape seen from above is substantially triangular. The foreign matter removing unit 40 is provided to prevent underwater dust and the like from entering the inflow port 11a.
The foreign matter removing unit 40 includes a support column 41, a circular tube 42, and a net 43. The support column 41 is disposed in front of the substantially central portion in the left-right direction of the water collecting portion 34 and at a position away from the opening of the water collecting portion 34 by a predetermined distance. The circular pipe 42 is disposed so as to connect the support column 41 and both ends in the left-right direction of the opening of the water collecting portion 34. The net 43 is arranged so as to cover the front side of the water collecting portion 34 in a state where the ends are fixed to the opening ends of the support column 41, the circular pipe 42, and the water collecting portion 34.

FIG. 8 is a perspective view showing an appearance of the power generation unit 50, and FIG. 9 is an axial sectional view of the power generation unit 50. 10 is a cross-sectional view for explaining the relationship between the power generation unit 50 and the rotating member 20, and FIG. 11 is an enlarged view showing a rotation transmission mechanism 60 that transmits the rotation of the rotating member 20 to the power generation unit 50. is there.
The power generation unit 50 is installed on the upper surface of the buoy 10. As shown in FIG. 4, the power generation unit 50 can also be installed on the upper portion of the support unit 1. Moreover, in FIG. 1 etc., the case where the power generation unit 50 is installed at three locations on both sides in the axial direction of the rotating member 20 is shown, but the number of power generation units 50 is not limited to this and any number of power generation units 50 is installed. Can be a number. Since the power generation unit 50 is installed on the upper surface of the buoy 10, maintenance and replacement work can be easily performed. Moreover, since the electric power generation part 50 is installed in the position higher than the water surface F, the failure by the penetration | invasion of water etc. is suppressed and a maintenance cost is reduced.

  As shown in FIG. 9, the power generation unit 50 includes a shaft 51, a rotor 52, a stator 53, a case 54, and the like. The case 54 is formed so as to have a bottomed cylindrical shape, and is formed so that the shaft 51, the rotor 52, and the stator 53 can be accommodated therein. The shaft 51 is supported by the case 54 so as to be rotatable about an axis, and an end 51 a which is one end protrudes outside the case 54. The rotor 52 is formed so as to rotate integrally with the shaft 51, and a permanent magnet 52a is fixed to the outer peripheral surface. The stator 53 is a member around which a coil 53 a is wound, and is disposed along the inner peripheral surface of the case 54. In the radial direction, a gap with a predetermined interval is formed between the permanent magnet 52a and the coil 53a.

  As shown in FIG. 10, a small-diameter ring gear 61 is inserted and fixed to the end 51 a of the shaft 51. As shown in FIG. 11, the small-diameter ring gear 61 meshes with the large-diameter ring gear 24. The small-diameter ring gear 61 and the large-diameter ring gear 24 constitute a rotation transmission mechanism 60 that transmits the rotation of the rotating member 20 to the power generation unit 50. The number of teeth and the diameter are set so that when the large-diameter ring gear 24 rotates once, the small-diameter ring gear 61 rotates a plurality of times. With the rotation of the rotating member 20 (large diameter ring gear 24), the small diameter ring gear 61 rotates, and the permanent magnet 52a of the power generation unit 50 shown in FIG. 10 rotates. Thereby, in the electric power generation part 50, it generates electric power by cooperation with the permanent magnet 52a and the coil 53a. The electricity generated by the power generation unit 50 is stored in a battery or used directly. In the power generation unit 50, the permanent magnet 52 a may be fixed to the stator 53 and the coil 53 a may be fixed to the rotor 52.

  As described above, according to the power generation device 100 according to the present embodiment, even when one of the flow rates of wind or water is low, the rotation of the rotating member 20 is maintained by the other flow rate, so that stable power generation is performed. Can do. Moreover, since the rotating member 20 is rotated using both the flow of wind and water, the rotating member rotates at a high speed, and a larger amount of power generation can be obtained.

  Moreover, the fluid introduction part 30 is formed so that the flow path cross-sectional area becomes smaller as it goes from the intake port 31a toward the inflow port 11a. For this reason, after raising the flow velocity of the taken-in wind and water, it can be made to flow in into the inflow port 11a. Thereby, even if it is a case where the flow velocity is low, the rotating member 20 can be rotated at high speed, and electric power generation can be stabilized.

  Further, the support portions 1 and 1 support the rotating member 20 so that the tangential direction of the outer periphery of the rotating member 20 and the fluid flow direction in the flow path 11 coincide. For this reason, wind and water hit the outer peripheral part of the rotating member 20, and the rotating member 20 can be rotated more efficiently. Thereby, electric power generation can be stabilized and electric power generation amount can be enlarged more.

  Further, the rotating member 20 includes thin plate-like blades 22 erected at predetermined intervals along the circumferential direction on the radially outer side surface, and the blades 22 have dimensions with respect to the axial direction of the rotating member 20. A central portion of the width is a curved shape protruding in the rotation direction of the rotating member 20. For this reason, the wind and water hitting the blades 22 are prevented from escaping to the outside in the width direction, and the flow of wind and water is more efficiently used for the rotation of the rotating member 20 so that the rotating member 20 becomes faster. Rotate. Thereby, electric power generation can be stabilized and electric power generation amount can be enlarged more.

  In addition, although the electric power generating apparatus 100 which concerns on this Embodiment can be installed in a river, a lake, the sea, etc., it can also be installed on the ground and utilized as a wind power generator.

DESCRIPTION OF SYMBOLS 1 Support part 10 Floating base 11 Flow path 11a Inlet 20 Rotating member 22 Blade 30 Fluid introduction part 31 Inlet 50 Power generation part 60 Rotation transmission mechanism

Claims (4)

A buoy with a channel through which fluid flows;
A rotating member that is rotatably supported by a support portion provided on the floating base and rotates about an axis by the flow of the fluid in the flow path;
A rotation transmission mechanism for transmitting rotation of the rotating member to a power generation unit installed on the buoy;
Fluid introduction that takes in the wind and water as the fluid from the intake port formed with an opening area larger than the inflow port and allows the fluid to flow into the inflow port on the inflow side of the flow path in the floating base A power generator characterized in that a portion is formed.   The power generation device according to claim 1, wherein the fluid introduction part is formed so that a cross-sectional area of the flow path decreases from the intake port toward the inflow port.   The said support part is supporting the said rotation member so that the tangent direction of the outer periphery of the said rotation member and the flow direction of the said fluid in the said flow path may correspond. The power generator described in 1. The rotating member is provided with thin plate-like blades erected at predetermined intervals along the circumferential direction on a radially outer side surface,
4. The blade according to claim 1, wherein the blade has a curved shape in which a central portion of a width corresponding to an axial direction of the rotating member protrudes in a rotating direction of the rotating member. The power generator of any one of them.

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