KR101045033B1 - Wind power generation system - Google Patents

Abstract

The present invention relates to a wind power generation system having a generator for converting rotational force generated by wind into electrical energy, comprising: a first axis and a second axis disposed to rotate at an angle to each other; A first blade and a second blade coupled to the first shaft and the second shaft to rotate by wind to rotate the first shaft and the second shaft; First and second clutches disposed on the first shaft and the second shaft to control rotational force; And a rotational transmission unit provided at an intersection area of the first shaft and the second shaft to transmit the rotational force of any one of the first shaft and the second shaft to the generator. As a result, at least one of the first axis and the second axis may be selectively used according to a given condition.

Description

Wind Power Generation System {WIND POWER GENERATION SYSTEM}

The present invention relates to a wind power generation system, and more particularly, to a hybrid wind power generation system having a first axis and a second axis that are disposed to rotate at an angle to each other.

Wind power generator is a device that converts the energy of the wind into electrical energy, and is produced as electric energy useful for life by using the wind generated from the surroundings. .

Generally, a wind turbine consists of a wing, a transmission and a generator. The wings are rotated by the wind and convert wind energy into mechanical energy, which is rotational force. The transmission converts the speed generated by the blades into the proper speed required by the generator. In addition, the generator converts the mechanical energy converted into the proper rotation speed by the transmission into electrical energy.

Such conventional wind generators may be classified into propeller-type horizontal shaft wind turbines, vertical shaft wind turbines such as gyro-type or Darius-type, vertical and horizontal shaft combined wind turbines, etc. according to the direction of the shaft.

Such a conventional vertical wind turbine has the advantage that the power generation is possible irrespective of the direction of the wind, but there is a disadvantage that the efficiency is low, horizontal shaft wind turbine has a disadvantage that is not suitable when the wind changes from time to time.

Further, the vertical and horizontal axis wind turbines are separately provided with an external rotational acceleration unit for increasing the rotational force of the vertical axis blades and the horizontal axis blades, as described in Korean Utility Model Publication No. 20-0408970, "Combined Wind Power Generator Using Vertical and Horizontal Blades." It is designed to use wind power efficiently.

However, such a conventional hybrid wind power generator is not configured to selectively use the vertical blade and the horizontal blade according to the wind conditions, etc., as well as a method to effectively use the wind around the blade is not presented. There is a problem that the efficiency can be reduced.

Accordingly, an object of the present invention is to provide a wind power generation system capable of selectively using at least one of the first axis and the second axis.

Another object of the present invention is to provide a wind power generation system that can effectively use the wind around the blade.

According to the present invention, there is provided a wind power generation system having a generator for converting the rotational force generated by the wind into electrical energy, the first axis and the second axis and disposed to rotate at an angle to each other; A first blade and a second blade coupled to the first shaft and the second shaft to rotate by wind to rotate the first shaft and the second shaft; First and second clutches disposed on the first shaft and the second shaft to control rotational force; It is achieved by a wind power generation system comprising a rotational transmission unit which is provided at the intersection of the first axis and the second axis to transmit the rotational force of any one of the first and second shafts to the generator.

The rotation transfer unit may include a first bevel gear and a second bevel gear that are coupled to the first shaft and the second shaft to interlock with each other.

It further comprises a power shaft for driving the generator, wherein the rotation transfer unit may further include a power shaft bevel gear coupled to the power shaft and interlocked with at least one of the first bevel gear and the second bevel gear.

At least one of the first clutch and the second clutch may include a one-way clutch function.

At least one of the first axis and the second axis includes a plurality of blocks arranged in the longitudinal direction of each axis, and a plurality of block connection parts provided on both sides of each block to connect the adjacent blocks. When the plurality of blocks are connected, the block connection part may be arranged to form a spiral shape along the rotation direction of the first axis and the second axis toward the rotation transfer unit.

The blocks of the first shaft and the second shaft are provided in a hollow shape, and the block connection portion may protrude to be coupled to at least one of the inner and outer surfaces of the first and second shafts.

The first blade and the second blade may be formed long in the longitudinal direction of the first axis and the second axis, respectively.

The first blade and the second blade may have an S-shaped radial cross section of each axis so as to be rotatable in one direction.

Blade outer side portions formed along the longitudinal direction of the first and second shafts may be provided on outer surfaces of the first and second shafts so as to be engaged with the inner portions of the first and second blades.

The first blade and the second blade may be provided in plural on the first shaft and the second shaft, respectively, and a support may be provided between the plurality of first blades and the plurality of second blades to maintain a distance therebetween. have.

The first shaft may be disposed in the up and down direction on the installation surface, and the second shaft may be installed in the left and right direction on the installation surface.

The first blade may further include a sag prevention unit that prevents the sag downward.

The deflection prevention unit may include a lower roller mounted on the lower side of the first blade, and a lower roller guide part for guiding the lower roller to rotate the lower roller together with the first blade.

It may further include a bending prevention unit for preventing the first blade is bent.

The bending preventing unit may include a side roller mounted on an outer region of the first blade, and a side roller guide part for guiding the side rollers so that the side rollers rotate together with the first blade.

The apparatus may further include a protection net provided on the outside of at least one of the first blade and the second blade to prevent foreign substances from being sucked into at least one of the first blade and the second blade.

It may further include a blade accelerator provided on the outside of at least one of the first blade and the second blade to accelerate the wind sucked to increase the rotation.

The blade accelerator may include an accelerator main body disposed close to a rotation radius of at least one of the first blade and the second blade, and an accelerator inlet part extended outward from the accelerator main body to accelerate the intake wind. have.

The blade accelerator may be rotatably provided around at least one of the first blade and the second blade according to the wind direction.

The first shaft is disposed in the up and down direction on the installation surface, the second shaft is disposed in the left and right direction on the installation surface, the blade accelerator mounted on the first shaft is provided to be rotatable around the first blade, The blade accelerator mounted on the second shaft may be provided to face in one direction without rotating outside the second blade.

The second shaft is disposed in the left and right directions on the installation surface, the blade accelerator mounted on the second shaft is provided on the upper and lower sides of the second blade to accelerate the wind blowing from the front and rear of the second blade, respectively. Can be.

According to the present invention, it is possible to provide a wind power generation system capable of selectively using at least one of the first axis and the second axis according to a given condition.

In addition, according to the present invention, it is possible to provide a wind power generation system that can effectively use the wind around the blade.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In various embodiments, like reference numerals refer to like elements, and like reference numerals refer to like elements in the first embodiment and may be omitted in other embodiments.

First embodiment

As shown in FIGS. 1 and 2, the wind power generation system 1 according to the first embodiment of the present invention includes a first shaft device 10, a second shaft device 60, and a power shaft 110. And a power transmission device 100 and a generator 130. The wind power generation system 1 according to the first embodiment of the present invention is provided between the power shaft 110 and the generator 130 to convert the rotation speed of the power shaft 110 into the rotation speed required by the generator 130. The transmission 120 may further include. Wind power generation system 1 according to the first embodiment of the present invention is an anemometer (3) and wind vane (5) for measuring the speed and direction of the wind blowing into the wind power generation system (1), and prevents damage from lightning It may further include a lightning rod 7 for, and an aerodrome lamp 9 for providing a position of the wind power generation system 1 to the aircraft flying around. In addition, in the wind power generation system 1 according to the first embodiment of the present invention, the first shaft device 10 and the second shaft device 10 and the second shaft device 60 are installed at a predetermined height. It may further include a base structure 140 provided on the lower side of the shaft device 60, and a control room 150 provided to monitor or control the overall operating status of the wind power generation system (1).

The foundation structure 140 may be formed as an example of the present invention so that the first shaft device 10 may be installed at a height of about 20 m from the ground. That is, the height of the foundation structure 140 provided below the first shaft device 10 is about 20m, the first shaft device 10 may use the wind blowing from the ground 20m or more. However, the foundation structure 140 provided below the first shaft device 10 may be 25m or 30m or more higher than about 20m from the ground, and may be 15m or 10m or less lower than 20m. In addition, the foundation structure 140 may be installed on the surface of the river or the sea without being limited to the ground. In addition, the foundation structure 140 may be a building such as a building. For example, the foundation structure 140 is a high-rise building, at least one of the first shaft device 10 and the second shaft device 60 may be installed on the roof of such a high-rise building.

As an example of the present invention, the foundation structure 140 has a seismic design to prevent damage of the wind power generation system 1 in the event of an earthquake, and includes a seismic isolator such as a seismic bearing. The seismic design and the seismic isolation device are almost similar to the known art, and thus detailed descriptions thereof will be omitted.

The generator 130 is a device that converts mechanical energy, which is rotational force generated by wind, into electrical energy, and converts rotational force appropriately shifted by the transmission device 120 into electrical energy. That is, the power shaft 110 received the rotational force from the first shaft device 10 and the second shaft device 60 by the power transmission device 100 transmits the rotational force to the transmission device 120, the transmission ( The rotation force appropriately shifted by the 120 is supplied to the generator 130 to generate electrical energy. Since the generator 130 and the transmission 120 are almost similar to those used in the known wind power generator, detailed description thereof will be omitted.

The first shaft device 10 is coupled to the first shaft 11 rotatably disposed on the installation surface and the first shaft 11 so as to rotate the first shaft 11 and rotated by wind. One blade 20 is included. The first shaft device 10 further includes a first shaft frame 40 installed on the foundation structure 140 to support the first shaft 11. The installation surface corresponds to the foundation structure 140 installed on the ground or the water surface as an example of the present invention, but may be a ground when no separate foundation structure 140 is provided.

As shown in FIG. 3, the first shaft 11 is disposed in an up and down direction on an installation surface, for example. However, the first shaft 11 is not limited thereto and may be installed at various angles such as 45 degrees or 60 with respect to the installation surface. The first shaft 11 supports the first blade 20 and is made of metal so as to have strength enough to rotate without being bent or damaged by the surrounding wind. The present invention is not limited thereto, and may be formed of various materials such as plastic, wood, or special fibers having the above-described strength. For example, the first shaft 11 has a length of about 6m to 7m. However, the first shaft 11 is not limited thereto and may be formed shorter than 6m or longer than 7m in consideration of power generation capacity. As an example of the present invention, as shown in FIG. 8, the lower side of the first shaft 11 may be installed to be rotatably inserted into the foundation structure 140. As such, the base structure 140 may be rotatably accommodated and supported by the load of the first shaft 11 to support the first shaft 11 more effectively and safely.

For example, the first shaft 11 includes a plurality of first shaft blocks 14 arranged in the longitudinal direction of the first shaft 11 and first shafts provided on both sides of each of the first shaft blocks 14 to be adjacent to each other. It includes a plurality of first shaft block connecting portion 15 for connecting the block (14).

The first shaft block 14 is provided with a length of about 1m to 2m to facilitate the transfer and assembly, but is not limited to this may be formed shorter than 1m or longer than 2m in accordance with the manufacturing conditions, installation conditions and transportation conditions. The first shaft block 14 is provided as a hollow shape as an example of the present invention, but is not limited thereto and may be provided in various shapes such as a pillar shape according to the material used.

The first shaft block connecting portion 15 is arranged to form a spiral shape along the rotational direction of the first shaft 11 toward the power transmission device 100 when the plurality of first shaft blocks 14 are connected (FIG. 3). See A). For example, four first shaft block connecting portions 15 are disposed at both ends of each of the first shaft blocks 14, but the quantity of the first shaft block connecting portion 15 is set in various ways in consideration of the thickness or length of the first shaft 11, and the like. Can be. In addition, the first shaft block 14 provided on one side thereof has a predetermined angle with the first shaft block 14 provided on the other side to form a predetermined angle along the rotational direction of the first shaft 11 toward the power transmission device 100. Are placed at an angle. Thus, when connecting the plurality of first shaft block 14, the first shaft block 14 is arranged in a spiral shape along the rotation direction of the first shaft (11). Thus, when the first shaft 11 is rotated, it can effectively respond to the force acting on each of the first shaft block connecting portion 15. The first shaft block connecting portion 15 is formed to protrude on the inner surface 12 of the first shaft 11 to be coupled by a bolt (not shown) as an example of the present invention. However, the first shaft block connecting portion 15 is not limited thereto, but may be formed to protrude on the outer surface 13 of the first shaft 11 to be coupled by a bolt (not shown) in a flange shape. In the present invention, the coupling method using the bolt may use a bolt and a nut, and a female thread may be formed at the coupling portion and coupled to the bolt.

In one embodiment of the present invention, the outer peripheral surface 13 of the first shaft 11 is provided with a first blade fastening portion 17 protruding to be engaged with the inner portion of the first blade (20). For example, the first blade fastening portion 17 is formed to extend along the longitudinal direction of the first shaft 11 on the outer surface 13 of the first shaft 11 to correspond to each of the first blades 20. It may be formed in a plurality of spaced apart from the outer surface 13 of the first shaft 11 in the longitudinal direction of the first shaft 11 corresponding to the first blade (20). In addition, the first blade fastening portion 17 is fastened by an inner portion of the first blade 20 and a bolt (not shown), for example, but an inner portion of the first blade 20 is removed from the first blade fastening portion 17. It may be fastened by a pin or the like so as not to be separated.

As shown in FIG. 2, the first blade 20 is light, for example, to be easily moved by ambient wind, and is made of a material such as plastic having a predetermined strength so as not to be easily damaged by strong winds. However, the first blade 20 is not limited thereto and may be provided with various materials such as metal materials or special fibers. The first blade 20 is provided in plural on the first shaft 11 as an example of the present invention, the cross section in the horizontal direction of the first shaft 11 has an S-shape so that it can be rotated in one direction. S-shaped cross-sectional shape of the first blade 20 has a larger area in contact with the wind than the straight shape can effectively absorb the energy of the wind, the wind is separated again by the first blade accelerator 50 to be described later There is an advantage to use. However, the first blade 20 is not limited thereto, and may have a cross section of various shapes such as a C shape such that the first blade 20 is rotatable in one direction by ambient wind.

The first blade support 25 may be provided between the plurality of first blades 20 to maintain the gap between the first blades 20. The first blade support 25 may be provided in plural in the longitudinal direction and the radial direction of the first shaft 11 to prevent the gap between the first blades 20 from being narrowed by wind as an example of the present invention. have. Both ends of the first blade support 25 are provided with a contact portion 26 contacting the first blade 20 with a predetermined area, and the contact portion 26 and the first blade 20 may be fastened by a bolt or a contact agent. have. The first blade support 25 may be formed of various materials such as plastic or metal having strength enough to prevent the gap between the first blades 20 from being narrowed.

As shown in FIG. 3, the first shaft device 10 may further include a deflection prevention unit 31 that prevents the first blade 20 from sagging downward. The deflection prevention unit 31 guides the lower roller 32 mounted on the lower side of the first blade 20 and the lower roller 32 so that the lower roller 32 rotates together with the first blade 20. Lower roller guide portion 33 is included.

For example, the lower rollers 32 are provided in the lower central area of each of the first blades 20 so as to prevent the first blades 20 from sagging by their own weight. However, the lower roller 32 may be provided in two or more in consideration of the weight of the first blade 20 and the like.

The lower roller guide portion 33 is provided in a circular shape on the lower side of the lower roller 32 so that the lower roller 32 is guided in contact with the cloud. The lower roller guide part 33 is installed on the first shaft frame 40 so as to have a strength that is not deformed by a load pressed by the lower roller 32.

As shown in FIG. 4, the first shaft device 10 may further include a bending prevention unit 35 to prevent the first blade 20 from bending. The bending prevention unit 35 guides the side rollers 36 mounted on the outer region of the first blade 20 and the side rollers 36 so that the side rollers 36 rotate together with the first blades 20. The side roller guide part 37 is included.

The side rollers 36 are provided as one in an outer lower area of each first blade 20 to prevent the first blade 20 from being bent by wind, for example. However, two or more side rollers 36 may be provided in consideration of the strength of the wind or the weight of the first blade 20. In addition, the side roller 36 may also serve to prevent the first blade 20 from sagging due to its own weight provided at the outer lower region of the first blade 20.

The side roller guide portion 37 is provided in a circular shape so that the upper side and the lower side of the side roller 36 are guided in rolling contact with each other. The side roller guide portion 37 is installed on the first shaft frame 40 so as to have a strength that is not deformed by the force pressed by the side roller 36.

As shown in FIG. 1, the first shaft frame 40 is provided on the lower side, the upper side, and the outer side of the first shaft 11 and the first blade 20, and the first shaft 11 and the first blade 20. Support. The first shaft frame 40 is provided near the outer side of the first blade 20 so as not to interfere with the lower support 41 provided on the lower side to support the first shaft 11 and the first blade 20. The outer frame 43 and the upper frame 45 provided on the upper side of the first blade (20).

The first shaft device 10 may further include a protection net 47 provided on the outside of the first blade 20 to prevent foreign matter from being sucked into the first blade 20. Guard net 47 is an example of the present invention is formed of a wire or a fiber material to all areas through which the wind can pass to the first blade 20, such as the outer frame 43 so as not to interfere with the first blade 20 It may be provided by a net or the like. The protection net 47 is illustrated in the outer frame 43 of FIGS. 1 and 5 as an example of the present invention, and may be formed in the outer frame 43 and the upper frame 45 as a whole.

As shown in FIG. 5, the first shaft device 10 may further include a first blade accelerator 50 to accelerate the wind sucked into the first blade 20. The first blade accelerator 50 is formed to extend outwardly from the first acceleration body part 51 and the first acceleration body part 51 disposed close to the rotation radius of the first blade 20 as an example of the present invention. It may include a first accelerator inlet portion 53. The first blade accelerator 50 may be provided to be rotatable according to the direction of the wind blowing into the first blade 20 as an example of the present invention.

The first acceleration body 51 is formed of a metal or plastic material through which wind cannot pass, and is formed along the outer frame 43 of the first shaft frame 40 on the outer side of the first blade 20. In one embodiment of the present invention, the width of the first acceleration body part 51 formed on the outer side of the first blade 20 is about 45 to 60 degrees angular range about the first shaft 11, but the first blade ( 20) may be larger or smaller than the range of 45 to 60 degrees in consideration of the size and the intensity of the ambient wind. The first acceleration body 51 is rotatably provided along the accelerator guide part 55 formed above and below the outer frame 43 of the first shaft frame 40. Accelerator guide portion 55 may be configured to have a U-shaped cross section as shown in the enlarged portion of Figure 5 to guide the upper and lower sides of the first acceleration body portion 51 as an example of the present invention.

However, the first acceleration body 51 is not limited thereto, and the upper and lower sides of the outer frame 43 of the first shaft frame 40 according to environmental conditions or installation conditions, such as when the wind blows in a substantially constant direction. Of course, it can be fixed without rotating.

The rotating means for rotating the first acceleration body 51 may include a first gear (not shown) which moves integrally with the first acceleration body 51, and a second gear fixedly formed along the accelerator guide part 55. Not shown) and a drive motor (not shown) for driving the first gear. However, the present invention is not limited thereto, and the rotating means for rotating the first acceleration body 51 may be applied in various ways such as a belt driving method. The rotation of the first acceleration body 51 may control the driving motor (not shown) to rotate in the direction in which the most wind can be sucked based on the direction of the wind obtained by the wind vane 5 described above.

The accelerator guide part 55 and the first acceleration body part 51 may be provided with a stopper 57 for limiting the rotation of the first acceleration body part 51 with respect to the accelerator guide part 55. The stopper 57 includes, for example, a plurality of protrusion accommodation parts 58 provided at one of the accelerator guide part 55 and the first acceleration body part 51 at regular intervals, and the accelerator guide part 55 and the first accelerator. It may include at least one stopper projection (59) provided on the other of the main body portion 51 is movable to be inserted into or detachable from the projection receiving portion (58). However, the stopper 57 is not limited thereto, and may be provided in various forms such as a brake device using friction to limit rotation of the single-acceleration main body part 51. As an example of the present invention, the stopper protrusion 59 is disposed on the lower side and the upper side of the first acceleration body part 51, respectively, and the plurality of protrusion accommodation parts 58 are the lower side and the upper side of the first acceleration body part 51. A plurality of accelerators 55 are disposed on the lower surface and the upper surface of the accelerator guide portion 55 respectively disposed on the lower side and the upper side to accommodate the stopper protrusions 59 disposed on the side surfaces. However, the protrusion accommodating part 58 and the stopper protrusion 59 are not limited thereto and may be formed at various positions such as side surfaces. The operation of the stopper 57 may be controlled in conjunction with the rotating means for rotating the first acceleration body 51. That is, the stopper protrusion 59 of the stopper 57 may be connected to and controlled by a solade device as an example of the present invention so as to be interlocked with the rotating means. Thus, when the first acceleration body part 51 is rotated by the rotating means, the stopper protrusion 59 is separated from the protrusion accommodating part 58, and when the first acceleration body part 51 is completed by the rotation means. The stopper protrusion 59 is accommodated in the protrusion accommodating part 58 to prevent rotation.

The first accelerator inlet part 53 is also made of a metal or plastic material through which wind cannot pass, and is gradually extended outwardly from the first acceleration base part 51 about the first axis 11. In an embodiment of the present invention, the width of the first accelerator inlet portion 53 formed on the outer side of the first blade 20 is about 45 to 60 degrees of angular range about the first shaft 11, but the first blade ( 20) may be larger or smaller than the range of 45 to 60 degrees in consideration of the size and the intensity of the ambient wind. The first accelerator inlet part 53 is provided to be rotatable integrally with the first acceleration main body part 51. An accelerator support 56 is provided at the first accelerator entry part 53 so as to support an outer region of the first accelerator entry part 53 to the accelerator guide part 55. The accelerator support 56 is provided to be movable along the accelerator guide part 55 by extending to the accelerator guide part 55 from the upper side and the lower side of the outer end region of the first accelerator inlet part 53 as an example of the present invention. .

Therefore. As the wind is sucked through the first accelerator inlet 53, it is accelerated to rotate the first blade 20 more quickly. Then, the wind passing through the first accelerator inlet 53 is blocked by the first acceleration main body 51 provided on the outside after rotating the first blade 20 to the first blade 20 again toward the first blade 20. Rotating the 20 makes the rotational force of the first blade 20 stronger.

The second shaft device 60 includes a second shaft 61 rotatably disposed at a predetermined angle with the first shaft 11 on the installation surface, and a second shaft to rotate the second shaft 61. The second blade 70 is coupled to the 61 and rotated by the wind. The second shaft device 60 further includes a second shaft frame 80 installed on the foundation structure 140 to support the second shaft 61. The second shaft 61 is disposed in the left and right directions on the mounting surface of the present invention as an example. However, the second shaft 61 may be installed to have various angles such as 10 degrees, 15 degrees, 20 degrees or 30 degrees from the installation surface to form a predetermined angle with the first shaft 11. The predetermined angle formed by the first axis 11 and the second axis 61 is about 90 degrees as an example of the present invention, but is not limited thereto, and may be set to various angles such as 45 degrees, 60 degrees and 120 degrees.

As shown in FIG. 6, the second shaft 61 supports the second blade 70 and is made of metal so as to have strength enough to rotate without being bent or damaged by the surrounding wind. The present invention is not limited thereto and may be provided with various materials such as plastic, wood, or special fibers having the above-described strength. For example, the second shaft 61 has a length of about 5 m. However, the first shaft 11 is not limited thereto and may be formed shorter than 5 m or longer than 5 m in consideration of power generation capacity. The second shaft 61 is, for example, a plurality of second shaft blocks 64 arranged in the longitudinal direction of the second shaft 61 and second shafts provided on both sides of each of the second shaft blocks 64 and adjacent to each other. It includes a plurality of second shaft block connecting portion 65 for connecting the block (64).

Since the second shaft block 64 is almost the same as the first shaft block 14 described above, a detailed description thereof will be omitted.

The second shaft block connecting portion 65 is protruded to the inner surface 62 of the second shaft 61 to be coupled to the bolt (not shown) as an example of the present invention. However, the second shaft block connecting portion 65 is not limited thereto, and may be formed to protrude on the outer surface 63 of the second shaft 61 to be coupled to the bolt (not shown) in a flange shape. The second shaft block connecting portion 65 is arranged to form a spiral in the rotational direction of the second shaft 61 toward the power transmission device 100 when the plurality of second shaft blocks 64 are connected ( See FIG. 6B). Since the second shaft block connecting portion 65 is also substantially the same as the first shaft block connecting portion 15 described above, a detailed description thereof will be omitted.

In one embodiment of the present invention, a second blade fastening portion 67 protruding to be engaged with the inner portion of the second blade 70 is provided on the outer surface 63 of the second shaft 61. Since the second first blade fastening unit 17 is almost similar to the first blade fastening unit 17 described above, a detailed description thereof will be omitted.

For example, the second blade 70 is light so as to be easily moved by ambient wind, and is made of a material such as plastic or special fiber having a predetermined strength so as not to be easily damaged by strong wind. The second blade 70 is provided in plural on the second shaft 61 as an example of the present invention, the cross section of the second axis 61 in the horizontal direction has an S-shape so as to be rotatable in one direction. Since the second blade 70 is also substantially the same as the first blade 20 described above, a detailed description thereof will be omitted.

A second blade support 75 may be provided between the plurality of second blades 70 to maintain the gap between the second blades 70. Both ends of the second blade support 75 are provided with contact portions 76 contacting the second blade 70 with a predetermined area, and the contact portions 76 and the second blade 70 may be fastened by bolts or contact agents. have. Since the first blade support 25 is also substantially the same as the second blade support 75 described above, a detailed description thereof will be omitted.

The second shaft frame 80 is provided on side surfaces of the second shaft 61 and the second blade 70 to support the second shaft 61 and the second blade 70. The second shaft frame 80 is provided with a second shaft support 81 supporting the second shaft 61 and a side frame provided close to the side of the first blade 20 so as not to interfere with the second blade 70. (83).

The second shaft device 60 may further include a protection net (not shown) provided outside the second blade 70 to prevent foreign matter from being sucked into the second blade 70. Since the protection net (not shown) is almost similar to the case of the first shaft device 10 described above, a detailed description thereof will be omitted.

As shown in FIG. 7, the second shaft device 60 may further include a second blade accelerator 90 to accelerate the wind sucked into the second blade 70. The second blade accelerator 90 extends outwardly from the second acceleration main body portion 91 and the second acceleration main body portion 91 disposed close to the rotation radius of the second blade 70 as an example of the present invention. The second accelerator inlet 93 may be included. The second blade accelerator 90 may be provided on the upper side and the lower side of the second blade 70 to accelerate the wind blowing from the front and rear of the second blade 70, respectively. That is, the second blade accelerator 90 may be provided on the upper side and the lower side of the second blade 70 so as not to rotate around the second blade 70 as an example of the present invention. However, the second blade accelerator 90 may be provided as one and may be rotatable around the second blade 70, and may be provided as a pair to be rotatable around the second blade 70.

The second acceleration main body portion 91 is made of a metal or plastic material that does not pass through the wind, and is supported on the side frame 83 of the second shaft frame 80 on the upper side and the lower side of the second blade 70. Prepared. In one embodiment of the present invention, the width of the second acceleration base body 91 formed on the upper side and the lower side of the second blade 70 is about 45 to 60 degrees in the angular range about the second axis 61, but the second Of course, the blade 70 may be larger or smaller than the range of 45 to 60 degrees in consideration of the size of the blade 70 and the strength of the ambient wind.

The second accelerator inlet 93 is also made of a metal or plastic material through which wind does not pass, and extends outward from the second acceleration base body 91 about the second shaft 61. In an embodiment of the present invention, the width of the second accelerator inlet portion 93 formed on the outer side of the second blade 70 is about 45 to 60 degree angle range around the second shaft 61, but the second blade ( 70) may be larger or smaller than the range of 45 to 60 degrees in consideration of the size and the strength of the ambient wind. Unlike the first blade accelerator 50 of the first shaft device 10, the second acceleration main body portion 91 and the second acceleration accelerator inlet portion 93 rotate on the side frame 83 of the second shaft frame 80. It may be fixed so as not to. As described above, the second blade accelerator 90 may be fixed to the upper side and the lower side of the side frame 83 because the second blade 70 rotates using only the wind blowing from the front or the rear. In one embodiment of the present invention, when the wind blows from the front of the second blade 70, the wind is accelerated by the second blade accelerator 90 disposed on the upper side of the side frame 83, the second blade 70 Accelerate the, and the second blade accelerator 90 disposed below does not act as an accelerator. When the wind blows from the rear of the second blade 70, the wind is accelerated by the second blade accelerator 90 disposed below the side frame 83 to accelerate the second blade 70. The second blade accelerator 90 disposed on the upper side does not serve as an accelerator. In this case, by installing the second blade accelerator 90 so as to be fixed without rotation, there is an advantage that it can be installed more firmly and cheaply than when rotatably installed like the first blade accelerator 50. In addition, the second blade accelerator 90 may also be expected to have the same effect as the aforementioned first blade accelerator 50.

The power shaft 110 is connected to the generator 130 to transmit the rotational force generated by the first shaft device 10 and the second shaft device 60 toward the generator 130. As an example in the present invention, when the generator 130 is disposed in front of the power transmission device 100, the power shaft 110 is disposed to face forward in the power transmission device 100. However, the generator 130 may be disposed under the power transmission device 100, in which case the power shaft 110 is connected in the axial direction with the first shaft 11 or the first shaft 11 is lower. It may be formed to extend.

As shown in FIG. 8, the power transmission device 100 is provided at an intersection area between the first shaft 11 and the second shaft 61 so that any one of the first shaft 11 and the second shaft 61 may be formed. Rotation transmission unit for transmitting the rotational force to the generator 130, and the first clutch 107 and the second clutch 109 disposed on the first shaft 11 and the second shaft 61, respectively, to control the rotational force do.

The rotation transfer unit may include a first bevel gear 101 and a second bevel gear 103 which are coupled to the first shaft 11 and the second shaft 61 and interlock with each other as an example of the present invention. In addition, the rotation transmission unit may further include a power shaft bevel gear 105 coupled to the power shaft 110 to interlock with at least one of the first bevel gear 101 and the second bevel gear 103. Accordingly, at least one of the rotational forces of the first shaft 11 and the second shaft 61 may be transmitted to the power shaft 110 using a bevel gear meshed with each other. However, the rotational transmission unit is not limited to the bevel gear shape, but the friction driving method or the belt driving method using a cylinder having a different diameter so as to be transmitted to the rotational force generator 130 of the first shaft 11 and the second shaft 61. Various methods can be used.

The first clutch 107 may interrupt the first shaft 11 and the first bevel gear 101, and may shift the rotational speed of the first shaft 11 to the first bevel gear 101. . The first clutch 107 may be provided in various forms such as a plurality of removable gear devices or hydraulic devices. The first clutch 107 may include a one-way clutch function as an example of the present invention. In this case, when the rotation speed of the first shaft 11 is lower than the rotation speed of the second shaft 61, the rotation speed of the second shaft may be prevented from being decelerated by the first shaft 11. That is, when the first clutch 107 includes the one-way clutch function, when the rotational speed of the first shaft 11 is slower than the rotational speed of the second shaft 61, the rotational force of the first shaft 11 may be the first. It is not transmitted to the bevel gear 101 and is idling. Devices having such a clutch function are well known in the art, so detailed description thereof will be omitted.

The second clutch 109 may intermittently control the second shaft 61 and the second bevel gear 103, and may transmit a speed of rotation of the second shaft 61 to the first bevel gear 103. . The second clutch 109 may include a one-way clutch function as an example of the present invention. In this case, when the rotational speed of the second shaft 61 is slower than the rotational speed of the first shaft 11, the rotational speed of the first shaft 11 may be prevented from being decelerated by the second shaft 61. . That is, when the first clutch 107 includes the one-way clutch function, when the rotational speed of the second shaft 61 is slower than the rotational speed of the first shaft 11, the rotational force of the second shaft 61 is equal to the second. Bevel gear 103 is not delivered to the idle. Other than the second clutch 109 is also similar to the first clutch 107, so detailed description thereof will be omitted.

Accordingly, the user manipulates the first clutch 107 and the second clutch 109 in consideration of the wind strength, the wind direction, or the like, so that only one of the first shaft 11 and the second shaft 61 is moved to the power shaft ( 110, and both the first shaft 11 and the second shaft 61 may be connected to the power shaft 110. For example, when the wind is weak, both the first shaft 11 and the second shaft 61 are connected to the power shaft 110 in order to secure a lot of rotational force. Only the first shaft 11 is connected to the power shaft 110 because power can be generated only by the rotational force of), and when the wind is rather strong, only the second shaft 61 whose power is relatively weaker than the first shaft 11 is driven. To shaft 110. In addition, when the wind is very strong, the generator or the like may not connect both the first shaft 11 and the second shaft 61 to the power shaft 110 to prevent damage. Therefore, in consideration of the strength of the wind, the direction of the wind and the like, by selectively using at least one of the first blade 20 and the second blade 70 can be obtained a rotational force, various forms of power generation as well as the first Even if one of the shaft device 10 and the second shaft device 60 is stopped due to a failure or the like, power generation is possible using the rest.

In addition, since the first clutch 107 and the second clutch 109 include a one-way clutch function, the first shaft 11 and the second shaft 61 are automatically rotated at a relatively low speed among the first shaft 11 and the second shaft 61 to be relatively idle. It is possible to prevent reducing the rotational force of the faster shaft.

Second embodiment

As shown in FIG. 9, in the wind power generation system 200 according to the second embodiment of the present invention, the auxiliary second shaft device 260 as well as the second shaft device 60 on both sides of the first shaft device 10. Is installed additionally. Thus, the wind power generation system 200 according to the second embodiment may further secure the rotational force generated by the auxiliary second shaft device 260 than the wind power generation system 1 according to the first embodiment.

In addition, unlike the above-described embodiment, the wind power generation system may be configured to produce electrical energy from a plurality of generators by connecting the plurality of wind power generation systems 1 of the first embodiment in parallel.

Reference numerals not described in FIG. 9 are the same as in the first embodiment, and thus description thereof is omitted.

Although some embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that modifications may be made to the embodiment without departing from the spirit or spirit of the invention. . It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

1 is a perspective view of a wind power generation system according to a first embodiment of the present invention;

FIG. 2 is an enlarged view showing an upper region of the first shaft device of the wind power generation system of FIG. 1;

3 is a cross-sectional view of the first shaft and the first blade of the wind power generation system according to the first embodiment of the present invention;

Figure 4 is an enlarged view of the deflection prevention unit and the bending prevention unit of the wind power generation system of Figure 1,

5 is an enlarged view of a first blade accelerator of the wind power generation system of FIG. 1;

6 is a cross-sectional view of a second shaft and a second blade of the wind power generation system according to the first embodiment of the present invention;

7 is a side view of a second blade of the wind power generation system according to the first embodiment of the present invention;

8 is a perspective view showing the inside of a power transmission device of the wind power generation system according to the first embodiment of the present invention;

9 is a perspective view of a wind power generation system according to a second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: Wind power generation system

10: first axis device 11: first axis

20: first blade 31: sag prevention unit

35: bending prevention unit 40: first axis frame

50: first blade accelerator 60: second axis device

61: 2nd axis 70: 2nd blade

90: second blade accelerator 100: power transmission device

101: first bevel gear 103: second bevel gear

105: power shaft bevel gear 110: power shaft

120: transmission 130: generator

140: basic structure 150: control room

Claims (11)

In the wind power generation system having a generator for converting the rotational force generated by the wind into electrical energy, At least one shaft member, a blade coupled to the shaft member to be rotated by wind, and a rotation transmission unit configured to transmit the rotational force of the shaft member to the generator, The shaft member includes a plurality of blocks arranged in the longitudinal direction of each axis, and a plurality of block connecting portions provided on both sides of each block to connect the adjacent blocks, The plurality of block connection portion is a wind power generation system, characterized in that when the plurality of blocks are connected to form a spiral form along the direction of rotation of the shaft member toward the rotation transfer unit. The method of claim 1, Each block is provided in a hollow shape, The block connection portion is a wind power generation system, characterized in that protruding to be coupled to at least one of the inner side and the outer side of the shaft member. The method of claim 1, Each of the blades is a wind power generation system, characterized in that formed long along the longitudinal direction of the shaft member. The method of claim 3, Wind turbines, characterized in that the outer surface of the shaft member is provided with a blade fastening portion formed along the longitudinal direction of the shaft member to be engaged with the inner portion of the blade. The method of claim 3, The blade is provided in plural in each of the shaft member, the wind power generation system characterized in that the support is provided between the plurality of blades to maintain a mutual gap. The method of claim 3, The shaft member is installed in the vertical direction on the installation surface, And a sag prevention unit further preventing the blade from sagging downward. The method of claim 6, The deflection prevention unit comprises a lower roller mounted on the lower side of the blade, and a lower roller guide unit for guiding the lower roller so that the lower roller rotates with the blade. The method according to claim 3 or 6, wherein And a bending prevention unit for preventing the blade from bending. The method of claim 8, The bending prevention unit comprises a side roller mounted to the outer region of the blade, and a side roller guide unit for guiding the side roller so that the side roller rotates with the blade. The method of claim 1, And the blade has an S-shape in a radial cross section of each axis so as to be rotatable in one direction. The method of claim 1, And a protection net provided outside the blade to prevent foreign matter from being sucked into the blade.

Images