Power generation device

Abstract

[Problem] The present invention provides a power generation device capable of efficiently receiving wind (normal direction wind) in a direction that promotes rotation of a fluid receiving part which corresponds to a blade part and efficiently releasing wind (reverse direction wind) in a direction against rotation. [Solution] A power generation device A that comprises a base support column part 1 which is provided with a rotatable rotary part 11 and a plurality of fluid receiving parts 2 which are provided so as to protrude radially from the periphery of the rotary part 11 and which receive wind, and that generates power via a power generation part 3 with movement of the fluid receiving parts 2, wherein the fluid receiving parts 2 swing in the vertical direction at a position at which wind is released.

Description

power generation equipment

[0001] The present invention relates to a power generating device that generates electricity by rotating a shaft using a fluid receiving portion that receives a fluid such as wind, and more particularly to a power generating device that generates electricity by efficiently receiving the energy of the fluid using the fluid receiving portion.

[0002] In response to the recent trend toward sustainability, power generation methods using natural energy are attracting increasing attention.

[0003] Among these, wind power generation, which utilizes the force of natural wind, has been a widely used power generation method in Japan for a long time, and there are various types of wind power generation. For example, there is a structure using the Magnus principle as described in Patent Document 1. Other types include those with a structure like a propeller, which has blades that directly receive the wind in the same direction as the rotating shaft, and those with blades that directly receive the wind in a direction perpendicular to the rotating shaft, like a horizontal water turbine.

[0004] However, the latter type, which has a wind-receiving section that receives the wind directly, is superior in terms of power generation efficiency.In the latter type, which receives the wind directly in a direction perpendicular to the rotation axis, it is important to make the area of ​​the surface that receives the wind as large as possible in order to use wind power most efficiently.

[0005] However, in a turbine that receives wind directly perpendicular to the axis of rotation, one blade that is symmetrical about the axis receives a fair wind in the same direction as the rotational direction, while the other blade receives a headwind that opposes the direction of rotation, creating a contradictory phenomenon. In other words, one blade that is symmetrical about the axis receives a fair wind, while the other receives a headwind that puts a strain on the rotation of the shaft. This means that the power of the wind cannot necessarily be used efficiently, resulting in a significant drop in power generation efficiency.

[0006] To solve this problem, a wind turbine has been developed with a structure in which the rotating blades are movable, allowing the wind to escape when the blades are exposed to wind in the opposite direction, as described in Patent Document 2. More specifically, in this wind turbine, the blades are divided into a fixed part and a movable part. The tips of the blades are in contact with the inner circumferential wall of a rotating wheel that is eccentric from the center of the wind turbine, so the blades are held down and deformed to swing horizontally, allowing the wind to escape when the wind blows in the opposite direction.

[0007] However, in this type of wind power generation, the fixed part is not movable, so this part cannot efficiently release the wind in the opposite direction. Also, because the blades are designed to swing horizontally, they cannot immediately respond to sudden changes in wind direction.

[0008] JP 2020-16169 A JP 2010-25095 A

[0009] The present invention was developed in response to the above-mentioned problems, and aims to provide a power generating device that can efficiently receive wind in a direction that promotes the rotation of the fluid receiving portion, which corresponds to the blade portion (i.e., a fair wind), and can efficiently release wind in a direction against the rotation (i.e., a headwind).

[0010] As a result of extensive research, the inventors have discovered that by making the wind receiving section swingable in the vertical direction, and by creating a mechanism that receives wind in a direction that contributes to rotation and releases wind in a direction that hinders rotation, it is possible to efficiently utilize wind energy throughout the device as a whole. The present invention is based on this finding.

[0011] That is, the present invention resides in (1) a power generation device A comprising a foundation support part 1 having a rotatable rotating part 11, and a plurality of fluid receiving parts 2 that protrude radially from the periphery of the rotating part 11 and receive wind, which generates electricity via a power generation part by the movement of the fluid receiving parts 2, and each fluid receiving part 2 oscillates up and down at a position that allows the wind to escape.

[0012] The present invention resides in (2) a power generating device A characterized in that each of the fluid receiving portions 2 comprises a first bar 21 protruding from the rotating portion 11, a second bar 22 positioned below the first bar 21 and free to move due to its own weight, and a flexible sheet body 23 placed between the first bar 21 and the second bar 22, and the second bar 22 oscillates around the first bar 21 as an axis.

[0013] The present invention resides in (3) a power generating device A comprising: a frame bar 4 protruding radially from the periphery of the rotating portion 11 at a position corresponding to the sheet body 23; a semicircular guide rail 5 extending vertically downward from the tip of the frame bar 4; and a swing bar 6 connecting the first bar 21 and the second bar 22, wherein a horizontally moving slider S1 is provided on the tip of the first bar 21, and is guided along a circular guide rail 7 provided on the foundation support portion 1, and a swing slider S2 is provided at an intermediate position of the swing bar 6, and the swing slider S2 swings while being guided along the semicircular guide rail 5.

[0014] The present invention resides in (4) a power generating device A characterized in that a stopper T is provided at the intermediate position of the semicircular guide rail 5, and the stopper T restricts the movement of the oscillating bar 6 at the position where the sheet body 23 receives the wind.

[0015] The present invention resides in (5) a power generation device A characterized in that a spring body TS is provided on the semicircular guide rail 5 on the rotational direction side of the rotating part 11, and the spring body TS regulates the movement of the oscillating bar 6 at a position where the sheet body 23 receives wind.

[0016] The present invention resides in (6) a power generating device A characterized in that the sheet body 23 is formed by connecting a plurality of divided pieces 231 together.

[0017] Furthermore, the present invention can also employ appropriate combinations of the above-described configurations.

[0018] 1) The power generating device A of the present invention comprises a foundation support section 1 having a rotatable rotating section 11, and a plurality of fluid receivers 2 projecting radially from the periphery of the rotating section 11 to receive wind, and generates electricity via the power generating section by the movement of the fluid receivers 2. Since each fluid receiver 2 swings up and down at a position where it can release the wind, when the fluid receiver 2 is facing the wind flow and is at a position where it should receive the wind, a force effectively acts in the direction of rotation of the rotating section 11. Furthermore, when the fluid receiver 2 is facing away from the wind flow and is at a position where it should release the wind, the fluid receiver 2 does not interfere with the rotation of the rotating section 11. As a result, it is possible to efficiently utilize wind energy to generate electricity.

[0019] 2) In the power generating device A of the present invention, each of the fluid receiving parts 2 comprises a first bar 21 protruding from the rotating part 11, a second bar 22 located below the first bar 21 and free to move due to its own weight, and a flexible sheet body 23 placed between the first bar 21 and the second bar 22. The second bar 22 swings around the first bar 21 as an axis, so that the fluid receiving part 2 can be swung with a simple structure and the fluid receiving part 2 can be tilted by wind pressure or drooped by its own weight. Furthermore, because the second bar 22 is free to move due to its own weight, it can respond (instantly) to any sudden changes in wind direction.

[0020] 3) The power generation device A of the present invention comprises frame bars 4 projecting radially from the periphery of the rotating portion 11 at positions corresponding to the sheet body 23, semicircular guide rails 5 extending vertically downward from the tip of the frame bar 4, and a swing bar 6 connecting the first bar 21 and the second bar 22, and a horizontally moving slider S1 guided along a circular guide rail 7 provided on the foundation support portion 1 is provided on the tip of the first bar 21, and a swing slider S2 is provided at an intermediate position of the swing bar 6, and the swing slider S2 swings while being guided along the semicircular guide rail 5, so that the swing bar 6 can be inclined or hanging, and further the fluid receiving portion 2 can swing smoothly along a stable trajectory.

[0021] 4) In the power generating device A of the present invention, a stopper T is provided at the middle position of the semicircular guide rail 5, and this stopper T regulates the movement of the oscillating bar 6 at the position where the sheet body 23 receives the wind. Therefore, when the oscillating slider S2 abuts against the stopper T, the sheet body 23 becomes in a hanging state (vertical state) and can receive the wind, and when the oscillating slider S2 is not in abutting state, the sheet body 23 tilts to allow the wind to escape.

[0022] 5) In the power generating device A of the present invention, a spring body TS is provided on the semicircular guide rail 5 on the rotational direction side of the rotating portion 11. The spring body TS restricts the movement of the swing bar 6 at the position where the sheet body 23 receives the wind. Therefore, the swing slider S2 contacts the spring body TS, causing the sheet body 23 to hang down (vertically) and receive the wind. When the swing slider S2 is not in contact with the spring body TS, the sheet body 23 tilts to allow the wind to escape. By adjusting the spring force setting of such a spring body TS, the swing bar 6 can be allowed to swing appropriately when a favorable wind is acting. This has the advantage of preventing stress on the sheet body 23 when a favorable wind suddenly changes to an abnormally gusty headwind.

[0023] 6) Since the sheet body 23 is made up of multiple connected segments, even if a part of the sheet body 23 is damaged, it is possible to replace only that segment 231 with a new one, thereby reducing maintenance costs in terms of both materials and labor.

[0024] FIG. 1 is an explanatory diagram showing a schematic diagram of a power generation device. FIG. 2 is an explanatory diagram showing a perspective view of the fluid receiver in a position receiving a fair wind. FIG. 3 is an explanatory diagram showing the fluid receiver 2 from the outside. FIG. 4 is an explanatory diagram showing a perspective view of the fluid receiver in a position receiving a headwind. FIG. 5 is an explanatory diagram showing a schematic diagram of the relationship between the rotation of the rotating part 11 and the fluid receiver 2. FIG. 6 is an explanatory diagram showing the fluid receiver 2 in a power generation device A according to another embodiment, seen from the outside. FIG. 7 is an explanatory diagram showing an example of the entire power generation device installed at sea.

[0025] Preferred embodiments of the present invention will be described in detail below, with reference to the drawings as necessary. In the drawings, identical elements are designated by the same reference numerals, and duplicate explanations will be omitted. Furthermore, unless otherwise specified, positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to those shown.

[0026] 1 is an explanatory diagram showing a schematic diagram of a power generating device A. The power generating device A of the present invention is a device that generates electricity by receiving wind in a fluid receiving portion 2 and using the received force to generate rotational force. While the present invention will be described below with reference to wind, the technical principles of the present invention can also be applied to water other than wind (for example, tidal currents).

[0027] The power generating device A mainly comprises a foundation support section 1 having a rotatable rotating section 11, a plurality of fluid receivers 2 that project radially from the periphery of the rotating section 11 and receive wind, and a power generating section 3 that converts the movement of the rotating section 11, i.e., rotational force, into electricity. For convenience, Fig. 1 shows two fluid receivers 2, one on the left and one on the right, and assumes that wind blows from front to rear as indicated by the outline arrows. The left fluid receiver 2 does not swing and receives wind from the front, while the right fluid receiver 2 swings in the direction of the wind to allow wind to escape; this point will be discussed later. While the power generating section 3 will not be described in detail here, any known device can be used as appropriate.

[0028] The foundation support part 1 includes a support part 12 that is long in the vertical direction, and a rotatable rotating part 11 that is provided on the support part 12. The rotating part 11 rotates relative to the support part 12, which is stationary.

[0029] The foundation support section 1 is installed and fixed to a foundation body (not shown). In the case of a floating-type power generation system, the foundation support section 1 is fixed to a floating foundation body, which is a foundation body that floats in water, and in the case of a bottom-fixed type, the foundation support section 1 is installed and fixed to a ground foundation body, which is a foundation body underwater. However, since the foundation body is not the essence of the present invention, detailed explanation of the foundation body will be omitted.

[0030] (Fluid Receptacle) The rotating unit 11, which is provided on the foundation support unit 1, specifically the support unit 12, has multiple fluid receivers 2 that protrude radially from its periphery. These multiple fluid receivers 2 are each equidistantly spaced horizontally. The rotational movement of the rotating unit 11 is transmitted to the power generating unit 3, and the resulting rotational force generates electricity using the power generating unit 3 (e.g., a generator). The fluid receiver 2 is the part that receives wind. When the fluid receiver 2 receives wind in a direction that encourages the rotation of the shaft (i.e., a fair wind), the rotating unit 11, which is integrated with the fluid receiver 2, rotates, and electricity is generated by the power generating unit 3, which is ultimately connected to the rotating unit 11. When the fluid receiver 2 receives wind in a direction that prevents the rotation of the shaft (i.e., a headwind), the fluid receiver 2 oscillates to allow the wind to escape. Note that the direction that encourages the rotation of the shaft refers to the direction that encourages the rotation of the rotating unit 11.

[0031] Figure 2 is an explanatory perspective view of the fluid receiver 2 in a position receiving a favorable wind. Figure 3 is an explanatory view of the fluid receiver 2 as seen from the outside. The device of the present invention will be described below with reference to these figures.

[0032] A pair of frame bars 4 are provided radially and protruding directly from the periphery of the foundation support column 1, more specifically, the rotating section 11 provided on the support column 12. These frame bars 4 are provided horizontally relative to the vertical support column 12. Semicircular guide rails 5 are provided across the base and tip of these frame bars 4. Each semicircular guide rail 5 is provided vertically so as to hang down from the horizontal frame bar 4.

[0033] A horizontally moving slider S1 is provided at each of the tip ends of the pair of frame bars 4. This horizontally moving slider S1 is guided along a circular guide rail 7 that is disposed at a fixed distance outward from the support column 12 as the center. In order to maintain the spacing between the pair of frame bars 4 and to reinforce them, support beams 8 are provided at each of the tip and base ends (i.e., the support column sides) of the pair of frame bars 4. The base and tip ends of a first bar 21, which will be described later, are attached to the middle positions of these support beams 8.

[0034] Next, the fluid receiving portion 2, which achieves an important function of the present invention, will be described in more detail. As described above, the fluid receiving portion 2 is provided so as to protrude radially from the periphery of the rotating portion 11 of the foundation support portion 1. The fluid receiving portion 2 comprises a first bar 21, a second bar 22 located below the first bar 21, and a sheet body 23 disposed between the first bar 21 and the second bar 22. The base and tip sides of the first bar 21 are attached to the intermediate positions of the support beams 8 described above and are rotatably supported.

[0035] The second bar 22, which is positioned below the first bar 21, hangs down freely due to its own weight in the fluid receiving section 2. This is because the first bar 21 is attached to the support beam 8, while the second bar 22 is a free end.

[0036] The first bar 21 and the second bar 22 are disposed in the middle of the pair of frame bars 4 in a top view, at positions corresponding to the pair of frame bars 4 described above. As a result, the second bar 22, which is positioned below the first bar 21, swings up and down around the axis of the first bar 21, which is positioned above. In other words, the fluid receiving portion 2 can also swing up and down. This swinging movement in the up and down direction includes swinging movement in the front and back directions, and is an important function of the present invention.

[0037] However, as will be described later, this vertical swinging motion is performed to allow the wind to escape when the fluid receiver 2 (more specifically, the sheet body 23) is in an upside-down position and receives wind (the state in FIG. 4), but is not performed when the fluid receiver 2 is in a straight-on position and receives wind (the state in FIG. 2). In the fluid receiver 2, the first bar 21 is used as an axis, and the second bar 22, which is located below it and is in a free state, swings up and down, so that when there is no wind, the fluid receiver 2 is in a drooping state due to its own weight. When there is a fair wind, the sheet body 23, which is the fluid receiver 2, is in a drooping state due to its own weight and does not swing any further, but when there is a headwind, it swings up and down and tilts.

[0038] The reason for this is that, as will be described later, the oscillating slider S2 abuts against a stopper T, and the stopper T functions to prevent the movement of the oscillating slider S2 when there is a fair wind, but does not function in this way when there is a headwind.

[0039] On the other hand, a swing bar 6 is installed between the base side, i.e., the foundation support side, and the tip side of the first bar 21 and the second bar 22. A swing slider S2 is provided at the intermediate position of the swing bar 6 on each of the base side and tip side, and these swing sliders S2 can be guided along the semicircular guide rails 5 installed between the base side and tip side of the frame bar 4 described above.

[0040] A stopper T is attached to the center position of each semicircular guide rail 5, i.e., the position corresponding to the lowest point. More specifically, this stopper T is attached slightly forward of the center position of the semicircular guide rail 5, and when the fluid receiving portion 2 is hanging vertically in the absence of wind, the oscillating slider S2 abuts against the stopper T. The stopper T serves to stop the movement of the oscillating slider S2, and the oscillating slider S2 is guided along the semicircular guide rail 5 but stops when it abuts against the stopper T.

[0041] When the fluid receiving portion 2 receives the wind while facing the wind in this manner, the fluid receiving portion 2 receives the wind in a hanging vertical position, so a rotational force is applied and the rotating portion 11 rotates clockwise, which is the direction of the arrow in Figure 2. Incidentally, the reason why the fluid receiving portion 2 swings is to allow the wind to escape when the fluid receiving portion 2 (more specifically, the sheet body 23) receives the wind while facing inversely.

[0042] 4 is an explanatory perspective view of the fluid receiver 2 exposed to a headwind. When the fluid receiver 2 is exposed to the wind while facing away from the wind, as shown in the figure, the movement of the swing slider S2 of the swing bar 6 is not prevented by the stopper T attached to the semicircular guide rail 5. In this case, the stopper T does not function.

[0043] Therefore, the entire fluid receiving portion 2 is easily guided along the semicircular guide rail 5, and swings upward. In this way, the swinging slider S2 is guided along the semicircular guide rail 5, and the fluid receiving portion 2 can swing up and down in a stable trajectory. The swinging of the fluid receiving portion 2 allows the headwind to escape, and does not interfere with the clockwise rotational force of the rotating portion 11.

[0044] (Sheet Body) Here, the sheet body 23 constituting the fluid receiving portion 2 will be described. The sheet body 23 is made of a flexible material, such as canvas used for sailboats. The sheet body 23 has a structure in which a plurality of independent flexible strip-shaped (i.e. rectangular) divided pieces 231 are connected in parallel. When connecting the divided pieces 231, for example, eyelets (not shown) provided in the divided pieces 231 are connected together with a connecting cord or the like.

[0045] Incidentally, in order to efficiently receive wind, it is preferable to minimize the amount of space between the segments 231, but depending on how they are connected, it is also possible to actively allow a certain amount of wind to escape. By actively allowing air to escape, it is possible to avoid the impact that the structure would receive from an abnormally strong wind. Since the sheet body 23 is made up of multiple segments 231, even if one part of the sheet body 23 is damaged, it is possible to replace only that damaged segment 231 with a new segment 231. In this way, the fluid receiver 2 is extremely efficient in terms of maintenance and also reduces costs.

[0046] Furthermore, in terms of the material of the segments 231, it is preferable that the segments 231 be made of carbon fiber from the viewpoints of durability and flexibility. By making the segments 231 from carbon fiber, the entire sheet body 23 is guaranteed to bend like a ship's sail.

[0047] Furthermore, the segments 231 are highly water-resistant and lightweight. The segments 231 themselves may be plain-woven or knitted sheets made of narrow (e.g., 2 cm) carbon fiber sheets. It is also possible to resin-coat a woven or knitted sheet or the segments 231.

[0048] Next, to understand the operation of the power generating device A, the movement of one fluid receiver 2 will be explained using an example of the fluid receiver 2 (see Figure 2). As mentioned above, the sheet body 23 is provided so as to swing around the first bar 21 as an axis, i.e., so as to swing up and down, and as already mentioned, when there is no wind acting on the sheet body 23, the sheet body 23 hangs down due to its own weight.

[0049] When the wind acts on the sheet body 23 facing the wind (as shown in FIG. 2), the swing slider S2 of the swing bar 6 comes into contact with the stopper T attached to the semicircular guide rail 5 and is prevented from moving forward, so the sheet body 23 remains suspended and can efficiently receive the wind. This causes the rotating part 11 to rotate in the direction of the wind, i.e., clockwise.

[0050] As the rotating part 11 continues to rotate from the state shown in Figure 2, the fluid receiving part 2 turns symmetrically to the opposite side of the support part 12, for example, 180°, and the tailwind now acts as a headwind on the fluid receiving part 2 (state shown in Figure 4).

[0051] FIG. 4 is an explanatory perspective view of the fluid receiver 2 in a position where it is receiving a headwind. When the fluid receiver 2 is facing away from the wind, the stopper T does not act on the swinging slider S2 even when the wind hits it. Therefore, the swinging bar 6 can swing in the same direction as the wind. This allows the fluid receiver 2 to escape the headwind, without interfering with the clockwise rotation of the rotating part 11. Incidentally, a sudden strong gust of wind from the headwind direction may cause the fluid receiver 2 to swing suddenly upward to escape the wind, which could result in the swinging slider S2 colliding with the frame bar 4. To prevent this, a shock absorber (spring, cushioning material, etc.) (not shown) may be provided near the frame bar 4.

[0052] In the present invention, a plurality of fluid receivers 2 are provided radially around the rotating part 11, so that when one fluid receiver 2 is escaping wind, the other fluid receivers 2 can receive the wind. As a result, the fluid receivers 2 do not interfere with the rotation of the rotating part 11, and wind energy can be utilized efficiently, which is extremely useful.

[0053] Next, Figure 5 is an explanatory diagram that schematically shows the relationship between the rotation of the rotating part 11 and the fluid receiving part 2. Here, an example in which there are three fluid receiving parts 2 will be explained. The left side of the thin vertical line is the area in which the fluid receiving part 2 is positioned to receive wind, and the right side is the area in which the fluid receiving part 2 is positioned to release wind. Note that the solid arrow indicates the wind direction, and the hollow arrow indicates the rotation direction of the rotating part 11.

[0054] First, in the state shown in Figure 5(A), when the three fluid receivers 2 receive wind, the fluid receivers 2a and 2b, which are in a state where they receive wind in accordance with the rotation of the rotating part 11, have their swing sliders S2 restricted by the stopper T. Therefore, the fluid receivers 2 are in a state where they hang down vertically due to their own weight. As a result, the fluid receivers 2 receive wind and the rotating part 11 rotates clockwise.

[0055] On the other hand, when the fluid receiving portion 2c is subjected to a headwind, the swinging slider S2 is in a free state not restricted by the stopper T, and therefore swings upward significantly, allowing the wind to escape. This allows the rotation of the rotating portion 11 to continue unimpeded.

[0056] Next, as the rotating part 11 continues to rotate from the state shown in Figure 5(A), the state shown in Figure 5(B) is reached. At this time, the fluid receiving part 2a continues to maintain a position facing the wind, while the rotation of the rotating part 11 causes the fluid receiving part 2b to move from a position receiving a fair wind to a position receiving a headwind. Furthermore, the fluid receiving part 2c maintains a state in which it allows the wind to escape. In this state, the swinging slider S2 of the fluid receiving part 2b is not restricted by the stopper T. Because it is in a free state, it can swing significantly upward even when it receives a headwind, allowing the wind to escape. Therefore, the rotation of the rotating part 11 is not impeded.

[0057] As the rotating part 11 continues to rotate from the state shown in Figure 5(B), the state shown in Figure 5(C) is reached. At this time, the fluid receiving part 2a maintains a position facing the wind, while the fluid receiving part 2b maintains a position allowing the wind to escape. Meanwhile, the rotation of the rotating part 11 causes the fluid receiving part 2c to move from a position receiving a headwind to a position receiving a tailwind. In this state, the swinging slider S2 of the fluid receiving part 2c is restricted by the stopper T. Therefore, the fluid receiving part 2c is hanging down vertically due to its own weight. As a result, the fluid receiving part 2 receives the wind and the rotating part 11 rotates clockwise.

[0058] As explained above, in Fig. 5(A), the fluid receivers 2a and 2b face the wind and receive the wind, while the fluid receiver 2c faces away from the wind and allows the wind to escape. Also, in Fig. 5(B), the fluid receiver 2a faces the wind and receives the wind, while the fluid receivers 2b and 2c face away from the wind and allow the wind to escape.

[0059] 5(C), the fluid receivers 2a and 2c are facing the wind and receive the wind, while the fluid receiver 2b is facing away from the wind and allows the wind to escape. In this way, the fluid receivers 2 contribute to the rotation of the rotating part 11 when facing the wind, and do not contribute to the rotation but do not hinder the rotation when facing away from the wind.

[0060] Next, another embodiment of the present invention will be described. Figure 6 is an explanatory view of the fluid receiver 2 in a power generator A according to another embodiment, viewed from the outside. This embodiment is an example in which the movement of the swinging slider S2 moving on the semicircular guide rail 5 is gradually restricted. In this embodiment, instead of the stopper T, a long coil spring-like spring body TS is provided on the semicircular guide rail 5 to gradually restrict the movement of the swinging slider S2.

[0061] This spring body TS is provided so as to restrict the movement within a range of 90 degrees from the position where the stopper T is provided along the semicircular guide rail 5. When a favorable wind acts on the sheet body 23, the long spring body TS provided on the semicircular guide rail 5 restricts the movement of the swinging slider S2 of the swinging bar 6, so that the swinging of the sheet body 23 is stopped and the sheet body 23 is subjected to the wind.

[0062] Furthermore, when the seat body 23 is in a reverse position where a headwind acts on it, the long spring body TS attached to the semicircular guide rail 5 does not restrict the movement of the swinging slider S2, so the seat body 23 is free to swing upward, allowing the wind to escape. By changing the setting of the spring force of such a spring body TS, it is possible to allow the swinging bar 6 to swing moderately when a fair wind acts on it. This has the advantage of preventing stress from being applied to the seat body 23 when a fair wind suddenly changes to an abnormal gust of headwind.

[0063] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments.

[0064] In the present invention, it is possible to change the degree of oscillation by adding weight to the second bar 22, which is free due to its own weight. In the present invention, the number of fluid receivers 2 radially protruding from the rotating part 11 is arbitrary, but three or more are preferable in order to continue the rotation continuously and smoothly.

[0065] In addition, the frame bar 4 may be attached to the semicircular guide rail 5 outside the horizontal movement slider S1 instead of inside the horizontal movement slider S1 as shown in Figure 2. Also, the first bar 21 may be extended and protrude directly from the rotating part 11 of the foundation support part 1.

[0066] As already mentioned, the divided pieces 231 forming the sheet body 23 are preferably rectangular, but the number of divided pieces is optional. Incidentally, the sheet body 23 can also be made into a single piece without being divided.

[0067] For further reference, Figure 7 is an explanatory diagram showing an example of the entire power generation system installed at sea. Note that this example shows a case where there are four fluid receivers 2. This wind turbine generator A has a structure in which the foundation support 1 is floated and moored. Specifically, the foundation support 1 is fixed to a housing K, and the power generation unit 3 is incorporated into the housing K.

[0068] The housing K is supported by the buoyancy of the moored annular float F. The circular guide rail 7 is supported by rail support columns 7A protruding upward from the housing K. Therefore, the circular guide rail 7 is provided integrally with the foundation support column portion 1. In this example, a fishing net N is attached to the annular float F, thereby providing a fish farming function. Here, the annular float F belongs to the floating foundation described above.

[0069] The power generating device A of the present invention can efficiently receive a wind that promotes the rotation of the wind receiving part, and can efficiently release a headwind that opposes the rotation. Based on this principle, it is also possible to generate power using a fluid such as water, for example, a tidal current.

[0070] DESCRIPTION OF SYMBOLS 1...Foundation support section 11...Rotating section 12...Support section 2, 2a, 2b, 2c...Fluid receiving section 21...First bar 22...Second bar 23...Sheet body 231...Segment piece 3...Power generation section 4...Frame bar 5...Semicircular guide rail 6...Oscillating bar 7...Circular guide rail 7A...Rail support column 8...Support beam A...Power generation device (wind power generation device) S1...Horizontal movement slider S2...Oscillating slider F...Annular floating body T...Stopper TS...Spring body K...Housing N...Fishing net

Claims

1. A power generation device comprising a base support section with a rotatable rotating section, and a plurality of fluid receiving sections that protrude radially from the periphery of the rotating section and receive wind, and which generates electricity through a power generation section by the movement of the fluid receiving sections, characterized in that each fluid receiving section oscillates up and down in a position that allows it to release the wind.

2. A power generating device as described in claim 1, characterized in that each of the fluid receiving sections comprises a first bar protruding from the rotating section, a second bar located below the first bar and free to move due to its own weight, and a flexible sheet body placed between the first bar and the second bar, and the second bar oscillates around the first bar as an axis.

3. A power generating device as described in claim 2, characterized in that it comprises a frame bar protruding radially from the periphery of the rotating part at a position corresponding to the seat body, a semicircular guide rail extending vertically downward from the tip of the frame bar, and a swinging bar connecting the first bar and the second bar, wherein a horizontally moving slider is provided at the tip of the first bar and is guided along a circular guide rail provided on the foundation support part, and a swinging slider is provided at the middle position of the swinging bar, and the swinging slider is guided along the semicircular guide rail to swing.

4. A power generating device according to claim 3, characterized in that a stopper is provided at the intermediate position of said semicircular guide rail, said stopper restricting the movement of said swing bar at a position where said sheet body is exposed to wind.

5. The power generating device according to claim 3, characterized in that a spring body is provided on the rotating direction side of the rotating part of the semicircular guide rail, and the spring body restricts the movement of the swing bar at a position where the sheet body receives the wind.

6. The power generating device according to claim 2, wherein the sheet body is made up of a plurality of connected divided pieces.

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