Wind power generation system

Abstract

To solve the problem that conventionally, blades rotate by catching wind, to turn a shaft, and a rotation speed is increased and adjusted by a speed increaser to generate electricity, however, there is a demand for a wind power generator that could generate more electricity more constantly.SOLUTION: In a wind power generation system, as before, a wind power generator has generated electricity by catching wind to rotate blades, and rotating a shaft and increasing a rotation speed with a speed increaser, however, in order to generate more electricity from the same air volume, a rotational shaft is made multi-shaft, and the blade is incorporated into the tip of each shaft, and also, in order that the speed increaser is installed on each shaft so that each shaft can rotate smoothly in the same direction, a two-stage inter-shaft bearing is incorporated between a central main shaft and a second shaft, and between a second shaft and a third shaft, so that each shaft rotates in the same direction to generate electricity, and as a result, it is possible to obtain a large amount of electricity with one wind power generator.

Description

[Technical field]

[0001] In previous wind turbines, natural wind caused the blades on the front of the main shaft to rotate, causing the shaft to rotate, and a speed increaser built into the shaft was used to increase the rotation speed, which was then converted into electricity by a generator.However, this new wind turbine system has an additional second shaft that covers the main shaft to make it multi-shaft, and power source blades are added toward the front of each shaft.The third shaft is then covered in the same way to make it multi-shaft, and a speed increaser and generator are installed on each of the additional shafts.This means that a single wind turbine system can generate the power of multiple turbines, making it a wind turbine with an integrated wind power generation system that can generate large amounts of electricity. [Background technology]

[0002] Currently, wind turbines generate electricity by rotating their blades using the natural wind, but because they cannot generate electricity when there is no wind, a large amount of electricity is required when they are in operation. To improve this, there was a need for a compact wind turbine that could generate a large amount of electricity and charge and transmit it with a single wind turbine. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Application No. 8-11896 Summary of the Invention [Problem to be solved by the invention]

[0004] Up until now, wind turbines have had the following drawbacks: They were installed on land or offshore, and so they relied on the natural wind to turn the blades and generate electricity, but when the wind stops or the wind is weak, the blades cannot rotate and electricity cannot be generated. So, rather than increasing the number of blades on the main shaft of the wind turbine to generate large amounts of electricity when the wind is blowing and making the rotational motion stronger, they are made multi-shaft to generate even more electricity, and blades are attached to each additional shaft, and a speed increaser and generator are installed on each shaft, and by performing power generation work on each shaft, a single wind turbine can generate as much electricity as many wind turbines, and it can also be made into a compact system, which is thought to solve this problem. Means to solve the problem

[0005] By making the shafts of conventional wind power generators multi-shaft, and by incorporating blades on each additional shaft and a gearbox and generator on each additional shaft, it is possible to generate a large amount of electricity and transmit and charge electricity when the wind blows and the blades rotate, compared to fixed wind power generators installed on land or sea. Furthermore, since it is possible to make the system more compact, even in the case of mobile wind power generators, a wind power generation system with a structure that is thought to be able to generate a large amount of electricity and transmit and charge electricity has been completed. Effects of the invention

[0006] By making the shafts of the fixed wind turbines and mobile wind turbines multi-shaft, and incorporating the blades, speed increasers, and generators of each additional shaft, the generating capacity of a conventional wind turbine can be increased to a large amount with a single wind turbine, and in terms of the amount of generated energy, a small wind turbine can have the generating capacity of a large wind turbine, a medium-sized wind turbine can have the generating capacity of a mega wind turbine, and a large wind turbine can have the mass generating capacity of a giga wind turbine, which contributes to reducing carbon dioxide emissions and reduces manufacturing costs. This effect allows the wind turbine to be provided as a wind turbine that is useful for preventing global warming and working toward becoming carbon neutral. [Brief description of the drawings]

[0007] [Figure 1]Cross-section of a wind turbine [Diagram 2] Main shaft blade, second shaft blade, and third shaft blade front view [Diagram 3] Cross-sectional view of main shaft blade, third shaft, and second shaft [Figure 4] Detailed cross-section of second and main shaft [Diagram 5] Cross-sectional view of two-stage bearing between shafts. Front view [Figure 6] Main shaft, second shaft, third shaft, case cross-sectional view and enlarged view [Figure 7] Blade overlap stopper - assembly diagram MODE FOR CARRYING OUT THEINVENTION

[0008] The above describes the embodiment of the present invention. The first invention of the present invention relates to a wind power generation system having a second shaft covering the outer periphery of the main shaft and a third shaft covering the outer periphery of the second shaft, wherein the main shaft, second shaft, and third shaft each have three blades on the upwind portion of each shaft, and the blades rotate when they catch the wind, causing each shaft to rotate and power a generator built into each shaft, generating electricity.The system is characterized in that each shaft rotates in the same direction by fixing the shafts together using a two-stage inter-shaft bearing frame to rotate the shafts, protrusions provided on the outer and inner circumferences of the bearing frame, and grooves dug in the inner and outer circumferences of the shafts.

[0009] The first aspect of the present invention is characterized in that the bearing balls in the inter-shaft two-stage bearing frame rotate in opposite directions.

[0010] In the first aspect of the present invention, it is preferable that the number of protrusions on the outer periphery and inner periphery of the bearing frame is 3 to 6.

[0011] When using a multi-shaft wind power generator, a blade overlap stopper is provided to prevent the blades of each shaft from overlapping when the wind catches the wind, and the blades at the front of the main shaft rotate due to the wind, which causes the main shaft to rotate, transmitting rotational force to the gear of the speed increaser built into the main shaft, and the converted energy is transmitted as rotational energy to the generator via the gear's power transmission shaft to generate electricity, and this electrical energy is transmitted and distributed via cables for use. For example, if the amount of electricity generated by the main shaft is taken as 1, the second and third shafts generate the same amount of electricity as the main shaft, so the total amount of electricity generated by each shaft is three times as much.

[0012] The structure of the multi-shaft is not particularly limited, but for example, as shown in Fig. 1, first, three shaft blades and three shafts are assembled into the case, and the upper and lower integrated bearings with bearings are attached to the upper part of the front bearing stay on the blade side, and the step-up gear is assembled to the upper part of the step-up gear stay on the rear side, and the rotational motion is transmitted from the step-up gear to the generator, generating electricity, which is then transmitted and distributed by cables. In fixed wind turbines, the amount of electricity generated by the main shaft, second shaft, and third shaft is transmitted using a charging and distributing device, and as for mobile wind turbines, the generated electricity is used by the generator itself, and any surplus electricity is charged and used in the secondary battery of the charging and distributing device.

[0013] There are no particular limitations regarding the twin shaft blades and twin shafts, but for example, as shown in Figure 6, twin shafts with blades are fixed to the upper and lower shafts by installing two or more protruding two-stage bearings between the inner circumference of the third shaft and the outer circumference of the second shaft, and the front of the second shaft protruding rearward from the rear of the third shaft is installed on the twin shaft with a step-up gear attached to the step-up gear stay, and the top of the rear bearing stay is installed and fixed in place inside the upper and lower integrated bearings with bearings installed, and the rotational motion of the step-up gear is transmitted to a generator to generate electricity, which is then transmitted and distributed via cables. Regarding the main shaft blades and the main shaft, a two-stage bearing with protrusions is installed between the inside of the two shafts and the main shaft, in at least two locations, one on the upwind side and one on the downwind side, and fixed into the upper and lower shaft grooves. Regarding the number of protrusions and grooves, it is preferable to install them in three to six locations, taking into account the strength of the wind. The front of the main shaft extending rearward from the two shafts is fitted with a speed increaser attached to the speed increaser stay, which is then attached and fixed to the inside of the upper and lower integrated bearings with bearings installed at the top of the rear bearing stay, and the rotational motion from the speed increaser is transmitted to a generator to generate electricity, which is then transmitted and distributed via cables. Regarding the drawing, if we consider the left side of Figure 1 as the upwind direction and the right side as the downwind direction, with the top of the drawing as up and the bottom as down, then to explain the position of each blade in Figure 1, the main shaft blade 1 of the main shaft 4 is in the upwind direction, the second shaft blade 2 of the second shaft 5 is downwind of the main shaft blade 1, and the third shaft blade 3 of the third shaft 6 is downwind of the second shaft blade 2, and rotational motion occurs due to the wind at each position.

[0014] The number of blades assembled on each shaft is three, with main shaft blade 1 to main shaft blade 2 and main shaft blade 3 assembled on a perfect circle on the windward (forward) side of the main shaft at intervals of 120 degrees, and the second and third shaft blades are also assembled on the shaft at equal intervals of 120 degrees, as with the main shaft blade, with three blades each assembled on the shaft at equal intervals of 120 degrees, and the second and third shafts are also assembled on the shaft in the windward direction, as with the main shaft. For example, as shown in Figure 2, which is not particularly limited, the second shaft blade is assembled on the second shaft at a position where the interval between main shaft blade 1 and second shaft blade 1 is 40 degrees so that the main shaft blade, second shaft blade, and third shaft blade do not overlap when viewed from the front of the shaft, and a stopper is assembled on the main shaft blade root shaft and the second shaft blade root shaft so that the main shaft blade 1 stops at the 40 degree position. Regarding the third shaft blade, the third shaft blade is also assembled to the third shaft at a position where the distance between the second shaft blade 1 and the third shaft blade 1 is 40 degrees, and a stopper is assembled to the shaft of the second shaft blade root and the third shaft blade root so that the second shaft blade 1 stops at the 40 degree position. The stopper is also called a blade overlap stopper, and the stopper having an L-shape is arranged so as to protrude into the rotational play space (space for continuing rotational motion) between the windward surface of the main shaft blade shaft and the windward surface of the second shaft blade shaft, and the main shaft A stopper is installed on the outer periphery of the main shaft on the rotation direction side of the base of the main shaft blade 1 from the rotation direction side of the base of the main shaft blade 1 to near the windward tip of the second shaft, and an inverted L-shaped protruding stopper is installed on the outer periphery of the second shaft in the space between the shafts from the windward tip of the second shaft to near the windward tip of the main shaft at a position where the distance between the main shaft blade 1 and the second shaft blade 1 is 40 degrees to receive this stopper, and is installed to receive the main shaft's blade overlap stopper, ensuring a 40 degree interval.Similar blade overlap stoppers are also installed on the second shaft blade 1 and the third shaft blade 1, and a similar stopper is installed on each shaft of each shaft blade 2.3, with the three main shaft blades, three second shaft blades, and three third shaft blades being installed so as to maintain a 40 degree positional interval. This allows the three main shaft blades 1, 2, 3, the three second shaft blades 1..2.3, and the three third shaft blades 1.2.3 to rotate at equal intervals due to the wind.

[0015] In the present invention, for each shaft, the inner circumference of the second shaft is fitted to cover the outer circumference of the main shaft, and the inter-shaft two-stage bearing incorporates protrusions in several places on the outer and inner circumference of the bearing frame, and for each shaft, grooves into which the protrusions of the bearing frame fit are carved in several places on the outer circumference of the main shaft, the inner circumference of the second shaft, the outer circumference of the second shaft, and the inner circumference of the third shaft, so that the protrusions of the bearing frame fit into the grooves of the shaft between the outer circumference of the main shaft and the inner circumference of the second shaft, and between the outer circumference of the second shaft and the inner circumference of the third shaft, and the bearing frame fits between the main shaft and the second shaft, and also between the second shaft and the third shaft, and is fixed in place by the protrusions. The inter-shaft two-stage bearing can be manufactured in any size by determining the size and number of bearing balls that fit the inner and outer circumference of the frame frame and the space between the upper and lower frames. In this invention, the two-stage bearing balls in the frame of the two-stage bearing between the main shaft and the second shaft, and between the second shaft and the third shaft, convert rotation, allowing the main shaft and the second shaft, and the second shaft and the third shaft to rotate in the same direction. If these two-stage bearings between the shafts are installed in two or more places on the upwind and downwind sides of each shaft, each shaft will transmit the rotation of each blade caused by the wind to each shaft, enabling rotational motion in the same direction, and the speed increaser installed in each shaft will increase the rotation speed, and the rotating power transmission shaft will transmit the power to a generator to generate electricity, which can be transmitted and distributed. [Explanation of symbols]

[0016] 1. Main shaft blade 2. 2nd shaft vane 3. Third shaft vane 4. Main shaft 5. Second axis 6. Third axis 7. Spindle speed increaser 8. 2nd shaft speed increaser 9. 3rd shaft speed increaser 10. Main shaft generator 11. Generator for shaft 2 12. Third shaft generator 13.Power transmission shaft 14.Charging power supply 15. Keple 16.Upper and lower integrated bearings 17. Main shaft blade head cover 18. Bearing ball 19. Two-stage bearing between shafts 20. Top and bottom integrated case 21. Case support frame 22. Bearing stay 23. Nat 24. Wing overlap stopper 25. Gearbox support stay (Gearbox stay) 26. Generator support stay 27. Bearing frame 28. Bearing frame outer periphery protrusion 29. Bearing frame inner circumference protrusion 30.Spindle outer circumferential groove 31.Second shaft inner groove 32.Second axis outer circumferential groove 33.3rd axis inner circumferential groove 34. Main shaft blade 1 35. Main shaft blade 2 36. Main shaft blade 3 37.Second shaft vane 1 38.Second shaft vane 2 39.Second shaft blade 3 40.Third shaft vane 1 41.Third shaft vane 2 42.Third shaft blade 3 43. Bearing ball

Claims

1. The system has a second shaft that covers the outer periphery of the main shaft, and a third shaft that covers the outer periphery of the second shaft, wherein the main shaft, the second shaft, and the third shaft each have three blades on the windward side of each shaft, and the blades rotate when exposed to wind, causing each shaft to rotate, thereby operating a generator built into each shaft to generate electricity, and the system also has two-stage inter-shaft bearings for rotating each shaft, Here, the intershaft two-stage bearing has a frame structure that sandwiches two layers of bearing balls from both the inside and outside, the two layers of bearing balls comprise inner bearing balls in contact with the inner bearing frame of the bearing frame structure of the intershaft two-stage bearing and outer bearing balls in contact with the outer bearing frame of the bearing frame structure of the intershaft two-stage bearing, the outer bearing balls are disposed between the inner bearing balls, and the bearing frames of the intershaft two-stage bearing disposed on the inside and outside can rotate, Here, the inner bearing frame of the intershaft two-stage bearing rotates in the same direction as the rotation of the shaft it contacts, and further, the outer bearing frame of the intershaft two-stage bearing also rotates in the same direction as the shaft, Here, the outer bearing frame and inner bearing frame of the inter-shaft two-stage bearing for rotating each of the shafts have protrusions provided on the outer periphery of the outer bearing frame and protrusions provided on the inner periphery of the inner bearing frame, and each shaft has grooves on the outer periphery of the main shaft, the inner periphery of the second shaft, the outer periphery of the second shaft and the inner periphery of the third shaft into which the protrusions of the bearing frames fit, and the protrusions of the outer bearing frame and inner bearing frame of the inter-shaft two-stage bearing fit and are fixed in the grooves, thereby causing each shaft to rotate in the same direction.

2. 2. The wind power generation system according to claim 1, characterized in that, among the bearing balls within the bearing frame of the inter-shaft two-stage bearing, the inner bearing balls in contact with the inner bearing frame rotate in a direction opposite to the rotation direction of the inner bearing frame, and the outer bearing balls in contact with the outer bearing frame rotate in the opposite direction to the inner bearing balls because the outer bearing balls are arranged in contact with each other between the inner bearing balls.

3. 2. The wind power generation system according to claim 1, wherein the number of protrusions provided on the outer periphery and inner periphery of the bearing frame of the inter-shaft two-stage bearing is three to six.

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