Use of wind turbine and potential energy storage device

Abstract

The invention relates to a wind turbine (1) comprising a first wind turbine blade (20) arranged to move about a vertical axis (R) and a first wind turbine blade support (40). A first wind turbine blade support (40) extends between the first wind turbine blade (20) and the wind turbine tower (10). The wind turbine (1) further comprises an upper support gap (31) arranged to enable horizontal movement of the first wind turbine blade support (40) relative to the wind turbine tower (10), and a potential energy storage device (50) arranged to limit the horizontal movement. The invention also relates to the use of the potential energy storage device (50) in a wind turbine for limiting horizontal movement.

Description

Technical Field

[0001] The present invention relates to a wind turbine, and more particularly to a wind turbine as defined by the preamble of claim 1.

[0002] The present invention also relates to the use of a potential energy storage device, and more particularly to the use of a potential energy storage device as defined by the preamble of claim 15. Background Art

[0003] In the prior art, wind turbine blades arranged to move about a vertical axis are connected to the wind turbine tower without clearance, such that the wind turbine tower directly receives all forces occurring in the wind turbine blades. Therefore, due to the rotation of the wind turbine blades and the direction of the wind, the wind turbine blades impose impacts on the wind turbine tower.

[0004] One of the problems associated with the prior art is that the impact forces may endanger the structure of the wind turbine tower or the wind turbine tower has to be very heavy. Summary of the Invention

[0005] It is an object of the present invention to provide a wind turbine and the use of a potential energy storage device to solve or at least mitigate the disadvantages of the prior art.

[0006] The object of the present invention is achieved by a wind turbine as characterized in independent claim 1.

[0007] The object of the present invention is also achieved by the use of a potential energy storage device as characterized in independent claim 15.

[0008] Preferred embodiments of the present invention are disclosed in the dependent claims.

[0009] The present invention is based on the idea of providing a wind turbine. The wind turbine includes a wind turbine tower having an upper end and a lower end, and the wind turbine tower extends between the upper end and the lower end of the wind turbine tower. The wind turbine further includes a first wind turbine blade arranged to move about a vertical axis. The wind turbine further includes a first wind turbine blade support extending between the first wind turbine blade and the wind turbine tower, and the first wind turbine blade is fixed to the first wind turbine blade support or the first wind turbine blade is an integral part of the first wind turbine blade support. The wind turbine further includes an upper support device provided on the wind turbine tower, the first wind turbine blade support being rotatably supported on the upper support device, the upper support device being arranged to provide support to the first wind turbine blade support in the vertical direction. The wind turbine further includes an upper support gap arranged to enable the first wind turbine blade support to move horizontally relative to the wind turbine tower. The wind turbine further includes a potential energy storage device arranged to limit the horizontal movement of the first wind turbine blade support and the horizontal movement of the first wind turbine blade.

[0010] The potential energy storage device suppresses the impact of the first wind turbine blade and the vibration of the wind turbine tower.

[0011] In one embodiment, the wind turbine further includes a wind turbine generator including a first wind turbine generator component and a second wind turbine generator component, and the first wind turbine generator component is arranged to rotate relative to the second wind turbine generator component and the first wind turbine generator component is arranged to move relative to the upper support device.

[0012] This provides power generation such that the impact of the first wind turbine blade and other wind turbine blades on the wind turbine tower is suppressed.

[0013] In an alternative embodiment, the wind turbine further includes a wind turbine generator including a first wind turbine generator component and a second wind turbine generator component, the first wind turbine generator component being provided above the upper support device, and the first wind turbine generator component is arranged to rotate relative to the second wind turbine generator component and the first wind turbine generator component is arranged to move horizontally relative to the upper support device, and the second wind turbine generator component is arranged to move horizontally together with the first wind turbine generator component.

[0014] This provides power generation such that impacts of the first wind turbine blade and other wind turbine blades on the wind turbine tower are suppressed, and simple support is provided for the first wind turbine generator component.

[0015] In another alternative embodiment, the wind turbine further includes a wind turbine generator that includes a first wind turbine generator component and a second wind turbine generator component. The first wind turbine generator component is arranged to rotate relative to the second wind turbine generator component, and the first wind turbine generator component is arranged to move horizontally relative to an upper support device, and the second wind turbine generator component is arranged to move horizontally together with the first wind turbine generator component.

[0016] This provides power generation such that impacts of the first wind turbine blade and other wind turbine blades on the wind turbine tower are suppressed, and the first and second wind turbine generator components are always in proper positions relative to each other.

[0017] In one embodiment, the potential energy storage device is rotatably connected to the first wind turbine blade support, and the potential energy storage device is mounted to the wind turbine tower.

[0018] This buffers the impact between the first wind turbine blade support and the wind turbine tower such that the first wind turbine blade and other wind turbine blades can rotate.

[0019] In an alternative embodiment, the potential energy storage device extends between the first wind turbine blade support and the wind turbine tower, the potential energy storage device is rotatably connected to the first wind turbine blade support, and the potential energy storage device is mounted to the wind turbine tower.

[0020] This suppresses the impact between the first wind turbine blade support and the wind turbine tower such that the first wind turbine blade and other wind turbine blades can rotate.

[0021] In another alternative embodiment, the potential energy storage device is rotatably connected to the first wind turbine blade support, and the potential energy storage device is fixedly mounted to the wind turbine tower or the upper support device.

[0022] This suppresses the impact between the first wind turbine blade support and the wind turbine tower such that the first wind turbine blade and other wind turbine blades can rotate.

[0023] In yet another alternative embodiment, the potential energy storage device is connected to the first wind turbine blade support through the second wind turbine generator component, and the potential energy storage device is connected to the wind turbine tower.

[0024] This suppresses the impact between the first wind turbine blade support and the wind turbine tower, enabling the first wind turbine blade and other wind turbine blades to rotate.

[0025] In another alternative embodiment, the wind turbine includes a horizontal support, to which the first wind turbine blade support is rotatably connected, and the horizontal support is connected to the wind turbine tower by a potential energy storage device.

[0026] This suppresses the impact between the first wind turbine blade support and the wind turbine tower, enabling the first wind turbine blade and other wind turbine blades to rotate.

[0027] In one embodiment, the wind turbine includes a wind turbine blade counterweight, which is disposed on the first wind turbine blade support.

[0028] This reduces the bending moment of the wind turbine tower.

[0029] In an alternative embodiment, the wind turbine includes a wind turbine blade counterweight, which is disposed on the first wind turbine blade support. The first wind turbine blade support has a first end and a second end, and extends between the first end and the second end. The first end of the first wind turbine blade support is disposed on the first side of the wind turbine tower, and the second end of the first wind turbine blade support is disposed on the second side of the wind turbine tower. The first wind turbine blade is disposed on the first side of the wind turbine tower, and the wind turbine blade counterweight is disposed on the second side of the wind turbine tower.

[0030] This reduces the bending moment of the wind turbine tower.

[0031] In another alternative embodiment, the wind turbine includes a second wind turbine blade, which is disposed on the first wind turbine blade support. The first wind turbine blade support extends between the first wind turbine blade and the second wind turbine blade, and also extends between the second wind turbine blade and the wind turbine tower.

[0032] This reduces the bending moment of the wind turbine tower, but increases the impact force caused by the first and second wind turbine blades.

[0033] In yet another alternative embodiment, the wind turbine includes one or more second wind turbine blade supports and one or more second wind turbine blades. The one or more second wind turbine blades are disposed on the one or more second wind turbine blade supports. The one or more second wind turbine blade supports extend between the one or more second wind turbine blades and the wind turbine tower. The one or more second wind turbine blades are arranged to move about a vertical axis, and the one or more second wind turbine blade supports are vertically supported by an upper support device.

[0034] This reduces the bending moment of the wind turbine tower and the efficiency of the wind turbine.

[0035] In yet another alternative embodiment, the blades of the wind turbine consist of first wind turbine blades.

[0036] This improves the efficiency of the wind turbine.

[0037] In yet another alternative embodiment, the wind turbine includes a wind turbine blade counterweight. The wind turbine blade counterweight is disposed on the first wind turbine blade support, and the blades of the wind turbine consist of first wind turbine blades.

[0038] This improves the efficiency of the wind turbine and the balance weight of the first wind turbine blades.

[0039] In one embodiment, the wind turbine includes a universal joint. The universal joint is arranged to prevent rotational movement of a second wind turbine generator component relative to a first wind turbine generator component.

[0040] The universal joint provides a simple structure to prevent rotational movement of a second wind turbine generator component relative to a first wind turbine generator component.

[0041] In an alternative embodiment, the wind turbine includes a lower support device. The lower support device is disposed below the upper support device on the wind turbine tower. The lower support device remains stationary relative to the wind turbine tower. The wind turbine includes a universal joint having a lower end and an upper end. The lower end of the universal joint is mounted to the lower support device, and the upper end of the universal joint is connected to a second wind turbine generator component.

[0042] The universal joint provides a simple structure to prevent rotational movement of a second wind turbine generator component relative to a first wind turbine generator component.

[0043] In another alternative embodiment, the wind turbine includes a lower support device disposed below the upper support device on the wind turbine tower. The lower support device remains stationary relative to the wind turbine tower. The wind turbine includes a universal joint having a lower end and an upper end. The lower end of the universal joint is mounted to the lower support device, and the upper end of the universal joint is mounted to the second wind turbine generator component. The universal joint is arranged to prevent rotational movement of the second wind turbine generator component relative to the first wind turbine generator component.

[0044] The universal joint provides a simple structure to prevent rotational movement of the second wind turbine generator component relative to the first wind turbine generator component.

[0045] In yet another alternative embodiment, the wind turbine includes a lower support device disposed below the upper support device on the wind turbine tower. The lower support device remains stationary relative to the wind turbine tower. The wind turbine includes a universal joint having a lower end and an upper end. The lower end of the universal joint is mounted to the lower support device or the wind turbine tower, and the upper end of the universal joint is mounted to a horizontal support member. The universal joint is arranged to prevent rotational movement of the second wind turbine generator component relative to the first wind turbine generator component.

[0046] The universal joint provides a simple structure to prevent rotational movement of the second wind turbine generator component relative to the first wind turbine generator component.

[0047] In one embodiment, the potential energy storage device includes three or more potential energy storage elements.

[0048] This provides sufficient suppression of shock.

[0049] In an alternative embodiment, the potential energy storage device includes three potential energy storage elements.

[0050] This limits horizontal movement in all horizontal directions.

[0051] In another alternative embodiment, the potential energy storage device includes three or more potential energy storage elements. The three or more potential energy storage elements have a first end and a second end. The first end of the potential energy storage element is fixedly connected to the wind tower, and the second end of the potential energy storage element is rotatably connected to the first wind turbine blade. The first end of the potential energy storage element is above the second end of the potential energy storage element.

[0052] This enables suppression of shock between the first wind turbine blade and other wind turbine blades such that the suppression does not affect the rotation of the first wind turbine blade and other wind turbine blades.

[0053] In yet another alternative embodiment, the potential energy storage device includes three potential energy storage elements, and the horizontal angle between adjacent potential energy storage elements in the horizontal direction is 120 degrees.

[0054] This limits the horizontal movement in all horizontal directions.

[0055] In another alternative embodiment, the potential energy storage device includes three or more potential energy storage elements, and the horizontal angle between adjacent potential energy storage elements in the horizontal direction is in the range of 0 to 120 degrees.

[0056] This limits the horizontal movement in all horizontal directions.

[0057] In another alternative embodiment, the potential energy storage device includes three or more potential energy storage elements, and the horizontal angle between adjacent potential energy storage elements in the horizontal direction is in the range of 10 to 120 degrees.

[0058] This limits the horizontal movement in all horizontal directions.

[0059] In one embodiment, the potential energy storage element includes a pulley, a rope, and a counterweight.

[0060] These are suitable for suppressing the impact of the wind turbine blade.

[0061] In an alternative embodiment, the potential energy storage element includes a spring.

[0062] The spring is a simple structure as a potential energy storage element.

[0063] In another alternative embodiment, the potential energy storage element includes a tension spring.

[0064] In yet another alternative embodiment, the potential energy storage element includes a compression spring.

[0065] In another alternative embodiment, the potential energy storage element includes an elastic object.

[0066] In yet another alternative embodiment, the potential energy storage element includes a magnetic field.

[0067] In yet another alternative embodiment, the potential energy storage element includes a gas-filled device.

[0068] In one embodiment, the potential energy storage device is arranged to limit the horizontal movement of the first wind turbine blade support and the horizontal movement of the first wind turbine blade, and the potential energy storage device is also arranged to limit the vertical movement of the first wind turbine blade support and the first wind turbine blade.

[0069] This prevents the first wind turbine blade from moving upward.

[0070] In an alternative embodiment, the potential energy storage device is arranged to restrict the horizontal movement of the first wind turbine blade support and the first wind turbine blade, and the potential energy storage device is also arranged to restrict the vertical movement of the first wind turbine blade support and the first wind turbine blade, and the potential energy storage device extends laterally with respect to the horizontal direction and extends laterally with respect to the vertical direction.

[0071] This prevents the first wind turbine blade from moving upward.

[0072] In another alternative embodiment, the potential energy storage device is arranged to restrict the horizontal movement of the first wind turbine blade support and the first wind turbine blade, and the potential energy storage device is also arranged to provide an upward vertical force to the first wind turbine blade support or to the wind turbine generator and the first wind turbine blade, and the potential energy storage device extends laterally with respect to the horizontal direction and extends laterally with respect to the vertical direction.

[0073] This reduces friction and thus improves the efficiency of the wind turbine.

[0074] In yet another alternative embodiment, the potential energy storage device is arranged to restrict the horizontal movement of the first wind turbine blade support and the first wind turbine blade, the potential energy storage device is also arranged to provide an upward vertical force, and the first wind turbine blade, and the potential energy storage device extends laterally with respect to the horizontal direction and extends laterally with respect to the vertical direction.

[0075] This reduces friction and thus improves the efficiency of the wind turbine.

[0076] In one embodiment, the potential energy storage element has a first end and a second end, the first end of the potential energy storage element is fixedly connected to the wind tower, and the second end of the potential energy storage element is rotatably connected to the first wind turbine blade, and the first end of the potential energy storage element is above the second end of the potential energy storage element, and the potential energy storage device includes a spring that is arranged to provide an upward vertical force.

[0077] This reduces friction and thus improves the efficiency of the wind turbine.

[0078] In an alternative embodiment, the potential energy storage element has a first end and a second end, the first end of the potential energy storage element is fixedly connected to the wind tower, and the second end of the potential energy storage element is rotatably connected to the first wind turbine blade, and the first end of the potential energy storage element is below the second end of the potential energy storage element, and the potential energy storage device includes a spring that is arranged to provide an upward vertical force.

[0079] This reduces friction and thus improves the efficiency of the wind turbine.

[0080] In one embodiment, a wind turbine tower includes a lattice column.

[0081] The lattice column is a lightweight and robust structure.

[0082] In an alternative embodiment, a wind turbine tower includes a tubular column.

[0083] The tubular column is a robust structure.

[0084] In another alternative embodiment, a wind turbine tower includes a lattice column and three or more guy wires.

[0085] The three or more guy wires increase the stiffness of the wind turbine tower.

[0086] In another embodiment, a wind turbine tower includes a tubular column and three or more guy wires.

[0087] In one embodiment, an upper support device is provided at or near the upper end of the wind turbine tower.

[0088] This provides a simple structure for supporting a first wind turbine blade support that can rotate.

[0089] In an alternative embodiment, an upper support device is provided at or near the upper end of the wind turbine tower, and the first wind turbine blade support is arranged to move above the upper end of the wind turbine tower and above the upper support device.

[0090] This provides a simple structure for supporting a first wind turbine blade support that can rotate.

[0091] In another alternative embodiment, an upper support device is provided at or near the upper end of the wind turbine tower, and the first wind turbine blade support and one or more second wind turbine blade supports are arranged to move above the upper end of the wind turbine tower and above the upper support device.

[0092] This provides a simple structure for supporting a first wind turbine blade support that can rotate.

[0093] In one embodiment, a wind turbine includes an antifriction member between the first wind turbine blade support and the upper support device, and the antifriction member is arranged to reduce the friction of the support of the first wind turbine blade support in the vertical direction.

[0094] This improves the efficiency of the wind turbine.

[0095] In an alternative embodiment, the wind turbine includes a rolling bearing that is between a first wind turbine blade support and an upper support device.

[0096] This further improves the efficiency of the wind turbine.

[0097] In another alternative embodiment, the wind turbine includes a rolling bearing that is between a first wind turbine blade support and an upper support device, and the rolling bearing includes one or more balls or rollers.

[0098] This further improves the efficiency of the wind turbine.

[0099] In yet another alternative embodiment, the wind turbine includes a rolling bearing that is between a first wind turbine blade support and an upper support device, and the rolling bearing includes three or more balls or rollers.

[0100] This further improves the efficiency of the wind turbine and balances the first wind turbine blade support.

[0101] In another alternative embodiment, the wind turbine has two sliding surfaces that are between a first wind turbine blade support and an upper support device.

[0102] This is a simple and balanced structure for reducing friction.

[0103] In one embodiment, the wind turbine tower includes a fixing element that is arranged to limit the vertical movement of the first wind turbine blade support.

[0104] The fixing element is arranged to fix the first wind turbine blade support during lifting and accidental movement.

[0105] In an alternative embodiment, the wind turbine tower includes a fixing element that is arranged to limit the horizontal movement of the first wind turbine blade support.

[0106] In another alternative embodiment, the wind turbine tower includes a fixing element that is arranged to limit the vertical and horizontal movement of the first wind turbine blade support.

[0107] In another alternative embodiment, the wind turbine tower includes a fixing element that is arranged to limit the vertical and horizontal movement of the first wind turbine blade support, and the fixing element is disposed above the upper surface of the upper support device.

[0108] In one embodiment, the wind turbine includes a first wind turbine generator component arranged to move about a vertical axis, a first wind turbine blade support, a first wind turbine blade, and a wind turbine blade counterweight, and the total weight of the first wind turbine generator component, the first wind turbine blade support, the first wind turbine blade, and the wind turbine blade counterweight is in the range of 400 kg - 800 kg or 400 - 10,000 kg.

[0109] This weight can be reasonably dampened.

[0110] In an alternative embodiment, the upper support clearance is in the range of 10 mm - 150 mm, or in the range of 75 mm - 150 mm, or in the range of 5 mm - 300 mm, or greater than 5 mm.

[0111] This allows for sufficient clearance for horizontal movement.

[0112] In another alternative embodiment, the wind turbine includes a first wind turbine generator component arranged to move about a vertical axis, a first wind turbine blade support, a first wind turbine blade, and a wind turbine blade counterweight, and the total weight of the first wind turbine generator component, the first wind turbine blade support, the first wind turbine blade, and the wind turbine blade counterweight is in the range of 400 kg - 800 kg or 400 - 10,000 kg, and the upper support clearance is in the range of 10 mm - 150 mm, or in the range of 75 mm - 150 mm, or in the range of 5 mm - 300 mm, or greater than 5 mm.

[0113] This weight can be dampened such that shock can be successfully suppressed.

[0114] In one embodiment, the wind turbine includes a horizontal support, the first wind turbine blade support is rotatably connected to the horizontal support, the horizontal support is connected to the wind turbine tower by a potential energy storage device, the upper support device includes an upper surface and a lower surface, the upper surface of the upper support device is above the lower surface of the upper support device, the upper support device includes an upper support opening that extends from the upper surface of the upper support device to the lower surface of the upper support device, and the horizontal support extends through the upper support opening.

[0115] In an alternative embodiment, the wind turbine includes a horizontal support member, a first wind turbine blade support member rotatably connected to the horizontal support member, the horizontal support member being connected to the wind turbine tower via a potential energy storage device, the upper support device including an upper surface and a lower surface, the upper surface of the upper support device being above the lower surface of the upper support device, the upper support device including an upper support opening extending from the upper surface of the upper support device to the lower surface of the upper support device, and the horizontal support member extending through the upper support opening.

[0116] In another alternative embodiment, the wind turbine includes a horizontal support member, a first wind turbine blade support member rotatably connected to the horizontal support member, the horizontal support member being connected to the wind turbine tower via a potential energy storage device, the upper support device including an upper surface and a lower surface, the upper surface of the upper support device being above the lower surface of the upper support device, the upper support device including an upper support opening extending from the upper surface of the upper support device to the lower surface of the upper support device, the horizontal support member extending through the upper support opening, a second wind turbine generator component fixedly connected to the horizontal support member, and a first wind turbine generator component fixedly connected to the first wind turbine blade support member, or fixedly connected to the first wind turbine blade support member and one or more second wind turbine blade support members.

[0117] In yet another alternative embodiment, the wind turbine includes a horizontal support member, a first wind turbine blade support member rotatably connected to the horizontal support member, the horizontal support member being connected to the wind turbine tower via a potential energy storage device, the upper support device including an upper surface and a lower surface, the upper surface of the upper support device being above the lower surface of the upper support device, the upper support device including an upper support opening extending from the upper surface of the upper support device to the lower surface of the upper support device, the horizontal support member extending through the upper support opening, a second wind turbine generator component fixedly connected to the horizontal support member, and a first wind turbine generator component fixedly connected to the first wind turbine blade support member, or fixedly connected to the first wind turbine blade support member and one or more second wind turbine blade support members, the upper support opening including a circular surface facing the horizontal support member, an upper support gap being provided between the upper support device and the horizontal support member, and the horizontal support member including a circular outer surface arranged to face the upper support gap. A universal joint is mounted to the horizontal support member and the wind turbine tower or the lower support device.

[0118] This provides a simple structure such that the potential energy storage device suppresses the impact of the blades and the vibrations caused by the impact.

[0119] The present invention also relates to the use of a potential energy storage device in a wind turbine for restricting the horizontal movement of a first wind turbine blade support and the horizontal movement of a first wind turbine blade fixed to the first wind turbine blade support. The first wind turbine blade is arranged to move about a vertical axis.

[0120] The potential energy storage device dampens the impact of the blade and the vibrations caused by the impact.

[0121] In one embodiment, the wind turbine is the wind turbine of any of the above-disclosed embodiments.

[0122] An advantage of the present invention is that a lightweight structure can be used in the wind turbine tower due to the reduced impact of the wind turbine blades.

[0123] In addition, the vibrations of the wind turbine tower are buffered.

[0124] In addition, the rotational friction in the wind turbine can be reduced, and thus the efficiency of the wind turbine can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0125] The present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings, wherein: Figure 1 A side view of a wind turbine according to an embodiment of the present invention is schematically shown; Figure 2 Schematically shown is Figure 1 a top view of the wind turbine; Figures 3-5 A side view of a wind turbine according to different embodiments of the present invention is schematically shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0126] Figure 1 and Figure 2 A schematic illustration shows an embodiment of a wind turbine 1 according to the present invention. The wind turbine 1 is a device that converts the kinetic energy of the wind into electrical energy.

[0127] The wind turbine 1 includes a wind turbine tower 10. The wind turbine tower 10 has an upper end 11 and a lower end 12, and the wind turbine tower extends between the upper end 11 of the wind turbine tower 10 and the lower end 12 of the wind turbine tower 10.

[0128] In one embodiment, the wind turbine tower 10 includes a lattice column. The lattice column is as Figure 5 shown.

[0129] In an alternative embodiment, the wind turbine tower 10 includes a tubular column.

[0130] In one embodiment, the wind turbine tower 10 includes a lattice column and three or more guy wires 15. This is shown in Figure 5 as follows.

[0131] In an alternative embodiment, the wind turbine tower 10 includes a tubular column and three or more guy wires 15.

[0132] The three or more guy wires 15 are tensioned cables designed to increase the stability of the wind turbine 1. One end of the three or more guy wires 15 is connected to the wind turbine tower 10, and the other end is anchored to the ground at a distance from the wind turbine tower 10.

[0133] The tension in the stay cables, combined with the compressive and buckling strength of the wind turbine tower 10, allows the wind turbine 1 to withstand more lateral loads, such as wind or the weight of a cantilever structure. They are typically installed in groups of three or four, radiating around the structure at equal angles.

[0134] The wind turbine 1 further includes a first wind turbine blade 20 arranged to move about a vertical axis R.

[0135] In the context of the present application, a vertical axis refers to an axis whose angle with the horizontal direction is between 85 degrees and 95 degrees.

[0136] The first wind turbine blade 20 converts wind energy into low-speed rotational energy.

[0137] The wind turbine 1 further includes a first wind turbine blade support 40. The first wind turbine blade support 40 extends between the first wind turbine blade 20 and the wind turbine tower 10, and the first wind turbine blade 20 is fixed to the first wind turbine blade support 40, or the first wind turbine blade 20 is an integral part of the first wind turbine blade support 40.

[0138] In the context of the present application, extends means arranged to extend.

[0139] In the context of the present application, the first wind turbine blade support 40 extending between the first wind turbine blade 20 and the wind turbine tower 10 means that at least a portion of the first wind turbine blade support 40 is located between the first wind turbine blade 20 and the wind turbine tower 10.

[0140] The wind turbine 1 further includes an upper support device 30 provided on the wind turbine tower 10, the first wind turbine blade support 40 being rotatably supported by the upper support device 30, and the upper support device 30 being arranged to provide support to the first wind turbine blade support 40 in the vertical direction.

[0141] In other words, the first wind turbine blade support 40 is arranged to move about a vertical axis R and in a horizontal direction.

[0142] In one embodiment, the upper support device 30 is provided at or near the upper end 11 of the wind turbine tower 10.

[0143] In one embodiment, the first wind turbine blade support 40 is arranged to move above the upper end 11 of the wind turbine tower 10 and above the upper support device 30.

[0144] In one embodiment, the upper support device 30 is provided at or near the upper end 11 of the wind turbine tower 10, and the first wind turbine blade support 40 and one or more second wind turbine blade supports 440 are arranged to move above the upper end 11 of the wind turbine tower 10 and above the upper support device 30.

[0145] One or more second wind turbine blade supports 440 are as Figure 6 shown.

[0146] In one embodiment, the upper support device 30 includes an upper support plate 39. The upper support plate 39 includes an upper surface 33 of the upper support device 30. The upper surface 33 of the upper support device 30 is arranged to extend in a horizontal direction.

[0147] In the context of the present application, the horizontal direction refers to a direction in which the angle between this direction and the vertical direction is between 85 degrees and 95 degrees.

[0148] The wind turbine 1 further includes an upper support gap 31, which is arranged to enable the first wind turbine blade support 40 to move horizontally relative to the wind turbine tower 10.

[0149] The first wind turbine blade 20 is arranged to move together with the first wind turbine blade support 40.

[0150] In one embodiment, as Figure 1 shown, the upper support gap 31 extends in a horizontal direction.

[0151] In other words, the upper support gap 31 is a gap between two surfaces that extends transversely with respect to the horizontal direction.

[0152] In an alternative embodiment, the upper support gap 31 extends in a vertical direction.

[0153] In other words, the upper support gap 31 is a gap between two surfaces extending transversely with respect to the vertical direction. This further means that, in this embodiment, the wind turbine 1 further includes a vertical support member that extends in the vertical direction and is flexible in the horizontal direction.

[0154] In a preferred embodiment, the first wind turbine blade 20, the first wind turbine blade support 40, and the wind turbine generator 60 including the first wind turbine generator component 61 and the second wind turbine generator component 62 are arranged to move together in the horizontal direction. In one embodiment, the upper support gap 31 includes an elastic material such that horizontal movement is enabled.

[0155] The wind turbine 1 further includes a potential energy storage device 50 that is arranged to limit the horizontal movement of the first wind turbine blade support 40 and the horizontal movement of the first wind turbine blade 20.

[0156] In the context of the present application, potential energy refers to the energy that an object retains due to its position relative to other objects or its internal stress.

[0157] In one embodiment, the potential energy storage device has gravitational potential energy depending on its mass and its distance from the center of mass of another object, or the elastic potential energy of a stretched spring, or elastic potential energy.

[0158] In a preferred embodiment, the potential energy storage device has the elastic potential energy of a stretched spring.

[0159] In one embodiment, the potential energy storage element 53 includes a pulley, a rope, and a counterweight.

[0160] In one embodiment, the potential energy storage element 53 includes a spring.

[0161] In one embodiment, the potential energy storage element 53 includes a stretched spring; or In one embodiment, the potential energy storage element 53 includes a compression spring.

[0162] A spring is an elastic object that stores mechanical energy. Springs are usually made of spring steel. There are many spring designs. In everyday use, the term usually refers to a helical spring.

[0163] When a traditional spring without variable stiffness characteristics is compressed or stretched from its rest position, it exerts a reaction force approximately proportional to the change in its length (this approximation fails for large deformations). The spring rate (or spring constant of a spring) is the change in the force it exerts divided by the change in the spring deformation. That is, it is the slope of the force-versus-deformation curve. The spring rate for stretching or compressing a spring is expressed in units of force divided by distance, such as N / m.

[0164] In one embodiment, the potential energy storage element 53 includes an elastic body.

[0165] In one embodiment, the wind turbine 1 includes a wind turbine blade counterweight 90 disposed on the first wind turbine blade support 40.

[0166] The wind turbine blade counterweight 90 is a counterweight that balances the weight of the first wind turbine blade support 40. In other words, the wind turbine blade counterweight 90 provides balance to the first wind turbine blade support 40 or increases the balance of the first wind turbine blade support 40.

[0167] In one embodiment, the first wind turbine blade support 40 has a first end 41 and a second end 42. The first wind turbine blade support 40 extends between the first end 41 and the second end 42. The first end 41 of the first wind turbine blade support 40 is disposed on the first side of the wind turbine tower 10, and the second end 42 of the first wind turbine blade support 40 is disposed on the second side of the wind turbine tower 10. The first wind turbine blade 20 is disposed on the first side of the wind turbine tower 10, and the wind turbine blade counterweight 90 is disposed on the second side of the wind turbine tower 10.

[0168] In an alternative embodiment, the wind turbine 1 includes a second wind turbine blade 220 disposed on the first wind turbine blade support 40. The first wind turbine blade support 40 extends between the first wind turbine blade 20 and the second wind turbine blade 220, and the first wind turbine blade support 40 extends between the second wind turbine blade 220 and the wind turbine tower 10.

[0169] In other words, the second wind turbine blade 220 and the first wind turbine blade 20 are fixed to the first wind turbine blade support 40, or the second wind turbine blade 220, the first wind turbine blade 20, and the first wind turbine blade support 40 are arranged to form an integral part, not shown in the figure.

[0170] In another alternative embodiment, the wind turbine 1 includes one or more second wind turbine blade supports 440 and one or more second wind turbine blades 220. The one or more second wind turbine blades 220 are disposed on the one or more second wind turbine blade supports 440. The one or more second wind turbine blade supports 440 extend between the one or more second wind turbine blades and the wind turbine tower 10. The one or more second wind turbine blades 220 are arranged to move about a vertical axis R, and the one or more second wind turbine blade supports 440 are supported vertically by the upper support device 30.

[0171] Figure 6 One or more second wind turbine blades 220 and one or more second wind turbine blade supports 440 are shown. It should be noted that Figures 1-5 All embodiments shown may include one or more second wind turbine blades 220 and one or more second wind turbine blade supports 440.

[0172] In one embodiment, the first wind turbine blade 20 and the second wind turbine blade 220 are helical rotors.

[0173] In an alternative embodiment, the first wind turbine blade 20 and the second wind turbine blade 220 are vertical helical rotors.

[0174] In one embodiment, the first wind turbine blade is a helical rotor.

[0175] In an alternative embodiment, the first wind turbine blade 20 is a vertical helical rotor.

[0176] In one embodiment, the wind turbine 1 further includes a wind turbine generator 60. The wind turbine generator includes a first wind turbine generator component 61 and a second wind turbine generator component 62. The first wind turbine generator component 61 is arranged to rotate relative to the second wind turbine generator component 62, and the first wind turbine generator component 61 is arranged to move relative to the upper support device 30.

[0177] The wind turbine generator 60 is a device that converts power (mechanical energy) into electricity. The mechanical energy forces the generator to rotate.

[0178] Generally, electricity generation is based on Faraday's law, such that a magnet rotates within a closed loop of a conductive material (such as copper wire). Almost all commercial electricity generation is accomplished using electromagnetic induction.

[0179] In one embodiment, a first wind turbine generator component 61 is disposed above the upper support device 30, and the first wind turbine generator component 61 is arranged to rotate relative to a second wind turbine generator component 62, and the first wind turbine generator component 61 is arranged to move in a horizontal direction relative to the upper support device 30, and the second wind turbine generator component 62 is arranged to move in the horizontal direction together with the first wind turbine generator component 61.

[0180] In one embodiment, the wind turbine 1 further includes a wind turbine generator 60, which includes a first wind turbine generator component 61 and a second wind turbine generator component 62, the first wind turbine generator component 61 is arranged to rotate relative to the second wind turbine generator component 62, and the first wind turbine generator component 61 is arranged to move in a horizontal direction relative to the upper support device 30, and the second wind turbine generator component 62 is arranged to move in the horizontal direction together with the first wind turbine generator component 61.

[0181] In one embodiment, the second wind turbine generator component 62, the first wind turbine generator component 61, and the first wind turbine blade support 40 are arranged to move together in the horizontal direction.

[0182] In one embodiment, the second wind turbine generator component 62, the first wind turbine generator component 61, the first wind turbine blade support 40, and one or more second wind turbine blade supports 440 are arranged to move together in the horizontal direction.

[0183] In one embodiment, the wind turbine 1 includes a universal joint 80, and the universal joint 80 is arranged to prevent the rotational movement of the second wind turbine generator component 62 relative to the first wind turbine generator component 61.

[0184] In one embodiment, the wind turbine 1 includes a lower support device 70, which is disposed on the wind turbine tower 10 below the upper support device 30, the lower support device remains stationary relative to the wind turbine tower 10, the wind turbine 1 includes a universal joint 80, the universal joint 80 has a lower end 81 and an upper end 82, the lower end 81 of the universal joint 80 is mounted to the lower support device 70, and the upper end 82 of the universal joint 80 is connected to the second wind turbine generator component 62.

[0185] In one embodiment, the wind turbine 1 includes a lower support device 70 which is disposed below the upper support device 30 on the wind turbine tower 10. The lower support device remains stationary relative to the wind turbine tower 10. The wind turbine 1 includes a universal joint 80 which has a lower end 81 and an upper end 82. The lower end 81 of the universal joint 80 is mounted to the lower support device 70, and the upper end 82 of the universal joint 80 is mounted to the second wind turbine generator component 62. The universal joint 80 is arranged to prevent rotational movement of the second wind turbine generator component 62 relative to the first wind turbine generator component 61.

[0186] In one embodiment, the wind turbine 1 includes a lower support device 70 which is disposed below the upper support device 30 on the wind turbine tower 10. The lower support device remains stationary relative to the wind turbine tower 10. The wind turbine 1 includes a universal joint 80 which has a lower end 81 and an upper end 82. The lower end 81 of the universal joint 80 is mounted to the lower support device 70 or the wind turbine tower 10, and the upper end 82 of the universal joint 80 is mounted to the horizontal support 43. The universal joint 80 is arranged to prevent rotational movement of the second wind turbine generator component 62 relative to the first wind turbine generator component 61.

[0187] In one embodiment, the second wind turbine generator component 62 includes a wind turbine generator shaft and an armature. The first wind turbine generator component 61 is disposed downwardly around the armature of the second wind turbine component and the wind turbine generator shaft of the second wind turbine generator component 62. In one embodiment, the universal joint 80 includes a first pair of hinges positioned closely together and oriented at 90° to each other, a second pair of hinges positioned closely together and oriented at 90° to each other, and a cross shaft arranged to connect the first pair of hinges and the second pair of hinges.

[0188] In one embodiment, the first pair of hinges of the universal joint 80 is disposed at the lower end 81 of the universal joint 80, and the second pair of hinges of the universal joint 80 is disposed at the upper end 82 of the universal joint 80.

[0189] Universal joints are generally used to transmit the shafts of rotational movement. Surprisingly, in the present application, the universal joint 80 prevents rotational movement of the second wind turbine generator component 62 relative to the first wind turbine generator component 61, such that the first wind turbine generator component 61 and the second wind turbine generator component 62 can move together in any horizontal direction.

[0190] In one embodiment, the second wind turbine generator component 62 includes a wind turbine generator shaft and an armature. The first wind turbine generator component 61 is disposed downwardly around the armature of the second wind turbine component and the wind turbine generator shaft of the second wind turbine generator component 62, and the universal joint 80 is connected to the wind turbine generator shaft.

[0191] In one embodiment, the second wind turbine generator component 62 includes a wind turbine generator shaft and an armature. The first wind turbine generator component 61 is disposed downwardly around the armature of the second wind turbine component and the wind turbine generator shaft of the second wind turbine generator component 62, and the universal joint 80 is connected to the wind turbine generator shaft below the upper support device 30.

[0192] In one embodiment, the wind turbine 1 includes an antifriction component between the first wind turbine blade support 40 and the upper support device 30, and the antifriction component is arranged to reduce the friction in the vertical direction of supporting the first wind turbine blade support 40; or In one embodiment, the wind turbine 1 includes a rolling bearing 100 between the first wind turbine blade support 40 and the upper support device 30.

[0193] In one embodiment, the antifriction component includes a rolling bearing 100.

[0194] In one embodiment, the antifriction component includes a rolling bearing 100 that includes two layers of balls.

[0195] In one embodiment, the antifriction component includes a rolling bearing 100 that includes two layers of balls, the lower layer includes three or more first balls, and the upper layer includes a second ball. The first balls are arranged to support the second ball.

[0196] In one embodiment, the rolling bearing 100 includes one or more balls or rollers.

[0197] In one embodiment, the rolling bearing 100 includes three or more balls or rollers.

[0198] In one embodiment, two sliding surfaces of the wind turbine 1 are between the first wind turbine blade support 40 and the upper support device 30.

[0199] A bearing is a mechanical element that constrains relative motion to only the desired motion and reduces the friction between moving parts.

[0200] In one embodiment, the rolling bearing 100 includes spherical balls.

[0201] In one embodiment, the rolling bearing 100 includes cylindrical rollers, linear tapered (conical) rollers, or rollers with a curved taper (so-called spherical rollers).

[0202] In one embodiment, the wind turbine 1 includes a first wind turbine generator component 61 arranged to move about a vertical axis R, a first wind turbine blade support 40, a first wind turbine blade 20, and a wind turbine blade counterweight 90, and the total weight of the wind turbine 1 includes the first wind turbine generator component 61, the first wind turbine blade support 40, the first wind turbine blade 20, and the wind turbine blade counterweight 90 in the range of 400 kg - 800 kg or 400 - 10,000 kg.

[0203] In one embodiment, the upper support clearance 31 is in the range of 10 mm - 150 mm, or in the range of 75 mm - 150 mm, or in the range of 5 mm - 300 mm, or greater than 5 mm.

[0204] In one embodiment, the potential energy storage device 50 is rotatably connected to the first wind turbine blade support 40, and the potential energy storage device 50 is mounted to the wind turbine tower 10.

[0205] In one embodiment, the potential energy storage device 50 is rotatably connected to the first wind turbine blade support 40, and the potential energy storage device 50 is mounted to the wind turbine tower 10. The potential energy storage device 50 includes one or more potential energy storage elements 53. The one or more potential energy storage elements have a first end 51 and a second end 52. The first end 51 of the one or more potential energy storage elements 53 is mounted to the wind turbine tower 10, and the second end 51 of the one or more potential energy storage elements 53 is rotatably connected to the first wind turbine blade support 40.

[0206] In one embodiment, the potential energy storage device 50 is rotatably connected to the first wind turbine blade support 40, and the potential energy storage device 50 is mounted to the wind turbine tower 10. The potential energy storage device 50 includes one or more potential energy storage elements 53. The one or more potential energy storage elements have a first end 51 and a second end 52. The first end 51 of the one or more potential energy storage elements 53 is connected to the wind turbine tower 10, and the second end 51 of the one or more potential energy storage elements 53 is rotatably connected to the first wind turbine blade support 40.

[0207] Figure 5 One or more potential energy storage elements 53 having a first end 51 and a second end 52 are shown.

[0208] In one embodiment, a first end 51 of the potential energy storage element 53 is fixedly connected to the wind turbine tower 10, and a second end 52 of the potential energy storage element 53 is rotatably connected to the first wind turbine blade 20.

[0209] In the context of the present application, "connected" means that a component is directly mounted or fixed to another component, or a component is mounted or fixed to another component through another component.

[0210] In one embodiment, the potential energy storage device 50 extends between the first wind turbine blade support 40 and the wind turbine tower 10. The potential energy storage device 50 is rotatably connected to the first wind turbine blade support 40 and is mounted to the wind turbine tower 10.

[0211] In one embodiment, the potential energy storage device 50 extends between the first wind turbine blade support 40 and the wind turbine tower 10. The potential energy storage device 50 is rotatably connected to the first wind turbine blade support 40 and is fixedly mounted to the wind turbine tower 1 or the upper support device 30.

[0212] In one embodiment, the potential energy storage device 50 is rotatably connected to the first wind turbine blade support 40 and is fixedly mounted to the wind turbine tower 1 or the upper support device 30.

[0213] In one embodiment, the potential energy storage device 50 is connected to the first wind turbine blade support 40 through the second wind turbine generator component 62, and the potential energy storage device 50 is connected to the wind turbine tower 10.

[0214] In one embodiment, the wind turbine 1 includes a horizontal support 43. The first wind turbine blade support 40 is rotatably connected to the horizontal support 43, and the horizontal support 43 is connected to the wind turbine tower 10 through the potential energy storage device 50.

[0215] In one embodiment, the potential energy storage device 50 includes three or more potential energy storage elements 53.

[0216] In one embodiment, the potential energy storage device 50 includes three potential energy storage elements 53.

[0217] In one embodiment, the potential energy storage device 50 includes three or more potential energy storage elements 53. The three or more potential energy storage elements 53 have a first end 51 and a second end 52. The first end 51 of the potential energy storage element 53 is fixedly connected to the wind tower 10, and the second end 52 of the potential energy storage element 53 is rotatably connected to the first wind turbine blade 20, and the first end 51 of the potential energy storage element 53 is above the second end 52 of the energy storage element 53.

[0218] In one embodiment, the potential energy storage device 50 includes three potential energy storage elements 53, and the horizontal angle A in the horizontal direction between adjacent potential energy storage elements 53 is 120 degrees.

[0219] In one embodiment, the potential energy storage device 50 includes three or more potential energy storage elements 53, and the horizontal angle A in the horizontal direction between adjacent potential energy storage elements 53 is in the range of 0 degrees to 120 degrees.

[0220] In one embodiment, the potential energy storage device 50 includes three or more potential energy storage elements 53, and the horizontal angle A in the horizontal direction between adjacent potential energy storage elements 53 is in the range of 10 degrees to 120 degrees.

[0221] In the context of the present application, the horizontal angle A in the horizontal direction between adjacent potential energy storage elements 53 refers to the projection of the angle between adjacent potential energy storage elements 53 on a horizontal plane, which is flat and flush with the ground.

[0222] Figure 3 A side view of a wind turbine 1 according to an embodiment of the present invention is schematically shown.

[0223] In one embodiment, the wind turbine 1 includes a horizontal support member 43. The first wind turbine blade support member 40 is rotatably connected to the horizontal support member 43. The horizontal support member 43 is connected to the wind turbine tower 10 through the potential energy storage device 50. The upper support device 30 includes an upper surface 33 and a lower surface 34. The upper surface 33 of the upper support device 30 is above the lower surface 34 of the upper support device 30. The upper support device 30 includes an upper support opening 32 that extends from the upper surface 33 of the upper support device 30 to the lower surface 34 of the upper support device 30, and the horizontal support member 43 extends through the upper support opening 32.

[0224] In one embodiment, the second wind turbine generator component 62 is fixed to the horizontal support member 43.

[0225] In one embodiment, the wind turbine generator 60 includes a wind turbine generator housing, the horizontal support member 43 is the wind turbine generator housing, and the second wind turbine generator component 62 is fixed to the wind turbine generator housing.

[0226] In one embodiment, the wind turbine 1 includes a horizontal support member 43, the first wind turbine blade support member 40 is rotatably connected to the horizontal support member 43, the horizontal support member 43 is connected to the wind turbine tower 10 through the potential energy storage device 50, the upper support device 30 includes an upper surface 33 and a lower surface 34, the upper surface 33 of the upper support device 30 is above the lower surface 34 of the upper support device 30, the upper support device 30 includes an upper support opening 32, the upper support opening 32 extends from the upper surface 33 of the upper support device 30 to the lower surface 34 of the upper support device 30, and the horizontal support member 43 extends through the upper support opening 32.

[0227] In one embodiment, the wind turbine 1 includes a horizontal support member 43, the first wind turbine blade support member 40 is rotatably connected to the horizontal support member 43, the horizontal support member 43 is connected to the wind turbine tower 10 through the potential energy storage device 50, the upper support device 30 includes an upper surface 33 and a lower surface 34, the upper surface 33 of the upper support device 30 is above the lower surface 34 of the upper support device 30, the upper support device 30 includes an upper support opening 32, the upper support opening 32 extends from the upper surface 33 of the upper support device 30 to the lower surface 34 of the upper support device 30, the horizontal support member 43 extends through the upper support opening 32, the second wind turbine generator component 62 is fixedly connected to the horizontal support member 43, and the first wind turbine generator component 61 is fixedly connected to the first wind turbine blade support member 40, or is connected to the first wind turbine blade support member 40 and one or more second wind turbine blade support members 440.

[0228] It should be noted that Figure 1 and Figure 2 the illustrated embodiment may include Figure 3 the illustrated horizontal support member 43.

[0229] Figure 4 A side view of the wind turbine 1 according to an embodiment of the present invention is schematically shown.

[0230] In one embodiment, the potential energy storage device 50 is arranged to limit the horizontal movement of the first wind turbine blade support member 40 and the horizontal movement of the first wind turbine blade 20, and the potential energy storage device 50 is also arranged to limit the vertical movement of the first wind turbine blade support member 40 and the first wind turbine blade 20.

[0231] In one embodiment, the potential energy storage device 50 is arranged to restrict the horizontal movement of the first wind turbine blade support 40 and the first wind turbine blade 20, and the potential energy storage device 50 is further arranged to restrict the vertical movement of the first wind turbine blade support 40 and the first wind turbine blade 20, and the potential energy storage device 50 extends laterally with respect to the horizontal direction and extends laterally with respect to the vertical direction.

[0232] In one embodiment, the potential energy storage device 50 is arranged to restrict the horizontal movement of the first wind turbine blade support 40 and the first wind turbine blade 20, and the potential energy storage device 50 is further arranged to provide an upward vertical force to the first wind turbine blade support 40 or the wind turbine generator 60 and the first wind turbine blade 20, and the potential energy storage device 50 extends laterally with respect to the horizontal direction and extends laterally with respect to the vertical direction.

[0233] In one embodiment, the potential energy storage device 50 is arranged to restrict the horizontal movement of the first wind turbine blade support 40 and the first wind turbine blade 20, the potential energy storage device 50 is further arranged to provide an upward vertical force, and the first wind turbine blade 20, and the potential energy storage device 50 extends laterally with respect to the horizontal direction and extends laterally with respect to the vertical direction.

[0234] In one embodiment, the wind turbine tower 10 includes a fixing element 200 which is arranged to restrict the vertical movement of the first wind turbine blade support 40.

[0235] In one embodiment, the wind turbine tower 10 includes a fixing element 200 which is arranged to restrict the horizontal movement of the first wind turbine blade support 40.

[0236] In one embodiment, the wind turbine tower 10 includes a fixing element 200 which is arranged to restrict the vertical movement and the horizontal movement of the first wind turbine blade support 40.

[0237] In one embodiment, the wind turbine tower 10 includes a fixing element 200 which is arranged to restrict the vertical movement and the horizontal movement of the first wind turbine blade support 40, and the fixing element 200 is provided above the upper surface 33 of the upper support device 30.

[0238] In one embodiment, the fixing element is made of steel.

[0239] In one embodiment, the fixing element is made of a steel plate or a profile.

[0240] It should be noted that Figure 1 and Figure 2 the illustrated embodiments may include Figure 4The fixed element 200 shown.

[0241] It should be noted that Figure 1 and Figure 2 the illustrated embodiment may include a potential energy storage device 50 which is also arranged to provide a vertical force.

[0242] The invention also relates to the use of a potential energy storage device 50 in a wind turbine 1 for restricting the horizontal movement of a first wind turbine blade support 40 and the horizontal movement of a first wind turbine blade 20 fixed to the first wind turbine blade support 40, characterized in that the first wind turbine blade 20 is arranged to move about a vertical axis R.

[0243] In one embodiment, the wind turbine 1 is the wind turbine 1 of any of the above - disclosed embodiments.

[0244] The present invention has been described above with reference to the examples shown in the drawings. However, the invention is in no way limited to the above examples, but rather may have many variations within the scope of the claims.

Claims

1. A wind turbine (1), characterized in that, The wind turbine (1) comprises: - a wind turbine tower (10) having an upper end (11) and a lower end (12), the wind turbine tower extending between the upper end (11) and the lower end (12) of the wind turbine tower (10), - a first wind turbine blade (20) arranged to move about a vertical axis (R), - a first wind turbine blade support (40) extending between the first wind turbine blade (20) and the wind turbine tower (10), the first wind turbine blade (20) being fixed to the first wind turbine blade support (40) or the first wind turbine blade (20) being an integral part of the first wind turbine blade support (40), - an upper support device (30) provided on the wind turbine tower (10), the first wind turbine blade support (40) being rotatably supported by the upper support device (30), the upper support device (30) being arranged to provide support to the first wind turbine blade support (40) in the vertical direction, - an upper support gap (31) arranged to enable the first wind turbine blade support (40) to move horizontally relative to the wind turbine tower (10), and - a potential energy storage device (50) arranged to limit the horizontal movement of the first wind turbine blade support (40) and the horizontal movement of the first wind turbine blade (20).

2. The wind turbine (1) according to claim 1, characterized in that: - the wind turbine (1) further comprises a wind turbine generator (60), the wind turbine generator comprising a first wind turbine generator component (61) and a second wind turbine generator component (62), the first wind turbine generator component (61) being arranged to rotate relative to the second wind turbine generator component (62) and the first wind turbine generator component (61) being arranged to move relative to the upper support device (30); or - the wind turbine (1) further comprises a wind turbine generator (60), the wind turbine generator comprising a first wind turbine generator component (61) and a second wind turbine generator component (62), the first wind turbine generator component (61) being provided above the upper support device (30), the first wind turbine generator component (61) being arranged to rotate relative to the second wind turbine generator component (62) and the first wind turbine generator component (61) being arranged to move horizontally relative to the upper support device (30), and the second wind turbine generator component (62) being arranged to move horizontally together with the first wind turbine generator component (61); or - The wind turbine (1) further includes a wind turbine generator (60), which includes a first wind turbine generator component (61) and a second wind turbine generator component (62). The first wind turbine generator component (61) is arranged to rotate relative to the second wind turbine generator component (62), and the first wind turbine generator component (61) is arranged to move in a horizontal direction relative to the upper support device (30), and the second wind turbine generator component (62) is arranged to move in the horizontal direction together with the first wind turbine generator component (61).

3. The wind turbine (1) according to claim 1 or 2, characterized in that: - The potential energy storage device (50) is rotatably connected to the first wind turbine blade support (40), and the potential energy storage device (50) is mounted to the wind turbine tower (10); or - The potential energy storage device (50) extends between the first wind turbine blade support (40) and the wind turbine tower (10), the potential energy storage device (50) is rotatably connected to the first wind turbine blade support (40), and the potential energy storage device (50) is mounted to the wind turbine tower (10); or - The potential energy storage device (50) is rotatably connected to the first wind turbine blade support (40), and the potential energy storage device (50) is fixedly mounted to the wind turbine tower (10) or the upper support device (30); or - The potential energy storage device (50) is connected to the first wind turbine blade support (40) through the second wind turbine generator component (62), and the potential energy storage device (50) is connected to the wind turbine tower (10); or - The wind turbine (1) includes a horizontal support (43), the first wind turbine blade support (40) is rotatably connected to the horizontal support (43), and the horizontal support (43) is connected to the wind turbine tower (10) through the potential energy storage device (50).

4. The wind turbine (1) according to any one of claims 1 to 3, characterized in that: - The wind turbine (1) includes a wind turbine blade counterweight (90), which is arranged on the first wind turbine blade support (40); or - The blade of the wind turbine (1) includes a first wind turbine blade (20); or - The wind turbine (1) includes a wind turbine blade counterweight (90), which is arranged on the first wind turbine blade support (40), and the blade of the wind turbine (1) includes a first wind turbine blade (20); - The wind turbine (1) includes a wind turbine blade counterweight (90) disposed on a first wind turbine blade support member (40). The first wind turbine blade support member (40) has a first end (41) and a second end (42), and extends between the first end (41) and the second end (42). The first end (41) of the first wind turbine blade support member (40) is disposed on a first side of the wind turbine tower (10), and the second end (42) of the first wind turbine blade support member (40) is disposed on a second side of the wind turbine tower (10). The first wind turbine blade (20) is disposed on the first side of the wind turbine tower (10), and the wind turbine blade counterweight (90) is disposed on the second side of the wind turbine tower (10); or - The wind turbine (1) includes a second wind turbine blade (220) disposed on a first wind turbine blade support member (40). The first wind turbine blade support member (40) extends between the first wind turbine blade (20) and the second wind turbine blade (220), and the first wind turbine blade support member (40) extends between the second wind turbine blade (220) and the wind turbine tower (10); or - The wind turbine (1) includes one or more second wind turbine blade support members (440) and one or more second wind turbine blades (220). The one or more second wind turbine blades (220) are disposed on the one or more second wind turbine blade support members (440). The one or more second wind turbine blade support members (440) extend between the one or more second wind turbine blades and the wind turbine tower (10). The one or more second wind turbine blades (220) are arranged to move about a vertical axis (R), and the one or more second wind turbine blade support members (440) are vertically supported by an upper support device (30).

5. The wind turbine (1) according to any one of claims 1 to 4, characterized in that: - The wind turbine (1) includes a universal joint (80) arranged to provide a rotational movement of a second wind turbine generator component (62) relative to a first wind turbine generator component (61); or - The wind turbine (1) includes a lower support device (70) disposed below the upper support device (30) on the wind turbine tower (10). The lower support device remains stationary relative to the wind turbine tower (10). The wind turbine (1) includes a universal joint (80) having a lower end (81) and an upper end (82). The lower end (81) of the universal joint (80) is mounted to the lower support device (70), and the upper end (82) of the universal joint (80) is connected to the second wind turbine generator component (62); or - The wind turbine (1) includes a lower support device (70) which is arranged below the upper support device (30) on the wind turbine tower (10), and the lower support device remains stationary relative to the wind turbine tower (10). The wind turbine (1) includes a universal joint (80) which has a lower end (81) and an upper end (82). The lower end (81) of the universal joint (80) is mounted to the lower support device (70), and the upper end (82) of the universal joint (80) is mounted to the second wind turbine generator component (62). The universal joint (80) is arranged to prevent the rotational movement of the second wind turbine generator component (62) relative to the first wind turbine generator component (61); or - The wind turbine (1) includes a lower support device (70) which is arranged below the upper support device (30) on the wind turbine tower (10), and the lower support device remains stationary relative to the wind turbine tower (10). The wind turbine (1) includes a universal joint (80) which has a lower end (81) and an upper end (82). The lower end (81) of the universal joint (80) is mounted to the lower support device (70) or the wind turbine tower (10), the upper end (82) of the universal joint (80) is mounted to the horizontal support member (43), and the universal joint (80) is arranged to provide the rotational movement of the second wind turbine generator component (62) relative to the first wind turbine generator component (61).

6. The wind turbine (1) according to any one of claims 1 to 5, characterized in that: - The potential energy storage device (50) includes three or more potential energy storage elements (53); or - The potential energy storage device (50) includes three potential energy storage elements (53); or - The potential energy storage device (50) includes three or more potential energy storage elements (53) which have a first end (51) and a second end (52). The first end (51) of the potential energy storage element (53) is fixedly connected to the wind turbine tower (10), and the second end (52) of the potential energy storage element (53) is rotatably connected to the first wind turbine blade (20), and the first end (51) of the potential energy storage element (53) is above the second end (52) of the potential energy storage element (53); or - The potential energy storage device (50) includes three potential energy storage elements (53), and the horizontal angle (A) in the horizontal direction between adjacent potential energy storage elements (53) is 120 degrees; or - The potential energy storage device (50) includes three or more potential energy storage elements (53), and the horizontal angle (A) in the horizontal direction between adjacent potential energy storage elements (53) is in the range of 0 to 120 degrees; or - The potential energy storage device (50) includes three or more potential energy storage elements (53), and the horizontal angle (A) in the horizontal direction between adjacent potential energy storage elements (53) is in the range of 10 to 120 degrees.

7. The wind turbine (1) according to any one of claims 1 to 6, characterized in that: - the potential energy storage element (53) comprises a pulley, a rope and a counterweight; or - the potential energy storage element (53) comprises a spring; or - the potential energy storage element (53) comprises a tension spring; or - the potential energy storage element (53) comprises a compression spring; or - the potential energy storage element (53) comprises an elastic body; or - the potential energy storage element (53) comprises a magnetic field; or - the potential energy storage element (53) comprises a gas-filled device.

8. The wind turbine (1) according to any one of claims 1 to 7, characterized in that: - the potential energy storage device (50) is arranged to limit the horizontal movement of the first wind turbine blade support (40) and the horizontal movement of the first wind turbine blade (20), and the potential energy storage device (50) is further arranged to limit the vertical movement of the first wind turbine blade support (40) and the first wind turbine blade (20); or - the potential energy storage device (50) is arranged to limit the horizontal movement of the first wind turbine blade support (40) and the first wind turbine blade (20), and the potential energy storage device (50) is further arranged to limit the vertical movement of the first wind turbine blade support (40) and the first wind turbine blade (20), and the potential energy storage device (50) extends laterally with respect to the horizontal direction and extends laterally with respect to the vertical direction; or - the potential energy storage device (50) is arranged to limit the horizontal movement of the first wind turbine blade support (40) and the first wind turbine blade (20), and the potential energy storage device (50) is further arranged to provide an upward vertical force to the first wind turbine blade support (40) or the wind turbine generator (60) and the first wind turbine blade (20), and the potential energy storage device (50) extends laterally with respect to the horizontal direction and extends laterally with respect to the vertical direction; or - the potential energy storage device (50) is arranged to limit the horizontal movement of the first wind turbine blade support (40) and the first wind turbine blade (20), and the potential energy storage device (50) is further arranged to provide an upward vertical force, and the first wind turbine blade (20), and the potential energy storage device (50) extends laterally with respect to the horizontal direction and extends laterally with respect to the vertical direction.

9. The wind turbine (1) according to any one of claims 1 to 8, characterized in that: - the wind turbine tower (10) comprises a lattice column; or - the wind turbine tower (10) comprises a tubular column; or - the wind turbine tower (10) comprises a lattice column and three or more guy wires (15); or - the wind turbine tower (10) comprises a tubular column and three or more guy wires (15).

10. The wind turbine (1) according to any one of claims 1 to 9, characterized in that: - the upper support device (30) is provided at or near the upper end (11) of the wind turbine tower (10); or - The upper support device (30) is provided at or near the upper end (11) of the wind turbine tower (10), and the first wind turbine blade support (40) is arranged to move above the upper end (11) of the wind turbine tower (10) and above the upper support device (30); or - The upper support device (30) is provided at or near the upper end (11) of the wind turbine tower (10), and the first wind turbine blade support (40) and one or more second wind turbine blade supports (440) are arranged to move above the upper end (11) of the wind turbine tower (10) and above the upper support device (30).

11. The wind turbine (1) according to any one of claims 1 to 10, characterized in that: - The wind turbine (1) includes an anti-friction member between the first wind turbine blade support (40) and the upper support device (30), and the anti-friction member is arranged to reduce the friction in the vertical direction of supporting the first wind turbine blade support (40); or - The wind turbine (1) includes a rolling bearing (100) between the first wind turbine blade support (40) and the upper support device (30); or - The wind turbine (1) includes a rolling bearing (100) between the first wind turbine blade support (40) and the upper support device (30), and the rolling bearing (100) includes one or more balls or rollers; or - The wind turbine (1) includes a rolling bearing (100) between the first wind turbine blade support (40) and the upper support device (30), and the rolling bearing (100) includes three or more balls or rollers; or - The wind turbine (1) includes two sliding surfaces between the first wind turbine blade support (40) and the upper support device (30).

12. The wind turbine (1) according to any one of claims 1 to 11, characterized in that: - The wind turbine tower (10) includes a fixing element (200) arranged to restrict the vertical movement of the first wind turbine blade support (40); or - The wind turbine tower (10) includes a fixing element (200) arranged to restrict the horizontal movement of the first wind turbine blade support (40); or - The wind turbine tower (10) includes a fixing element (200) arranged to restrict the vertical and horizontal movements of the first wind turbine blade support (40); or - The wind turbine tower (10) includes a fixing element (200) arranged to restrict the vertical and horizontal movements of the first wind turbine blade support (40), and the fixing element (200) is provided above the upper surface (33) of the upper support device (30).

13. The wind turbine (1) according to any one of claims 1 to 12, characterized in that: - The wind turbine (1) includes a first wind turbine generator component (61), a first wind turbine blade support (40), a first wind turbine blade (20), and a wind turbine blade counterweight (90) arranged to move about a vertical axis (R), and the total weight of the first wind turbine generator component (61), the first wind turbine blade support (40), the first wind turbine blade (20), and the wind turbine blade counterweight (90) is in the range of 400 kg - 800 kg or 400 - 10,000 kg; or - The upper support clearance (31) is in the range of 10 mm - 150 mm, or in the range of 75 mm - 150 mm, or in the range of 5 mm - 300 mm, or greater than 5 mm; or - The wind turbine (1) includes a first wind turbine generator component (61), a first wind turbine blade support (40), a first wind turbine blade (20), and a wind turbine blade counterweight (90) arranged to move about a vertical axis (R), and the total weight of the first wind turbine generator component (61), the first wind turbine blade support (40), the first wind turbine blade (20), and the wind turbine blade counterweight (90) is in the range of 400 kg - 800 kg or 400 - 10,000 kg, and the upper support clearance (31) is in the range of 10 mm - 150 mm, or in the range of 75 mm - 150 mm, or in the range of 5 mm - 300 mm, or greater than 5 mm.

14. The wind turbine (1) according to any one of claims 1 to 13, characterized in that: - The wind turbine (1) includes a horizontal support (43), the first wind turbine blade support (40) is rotatably connected to the horizontal support (43), the horizontal support (43) is connected to the wind turbine tower (10) by a potential energy storage device (50), the upper support device (30) includes an upper surface (33) and a lower surface (34), the upper surface (33) of the upper support device (30) is above the lower surface (34) of the upper support device (30), the upper support device (30) includes an upper support opening (32), the upper support opening (32) extends from the upper surface (33) of the upper support device (30) to the lower surface (34) of the upper support device (30), and the horizontal support (43) extends through the upper support opening (32); or - The wind turbine (1) includes a horizontal support member (43), a first wind turbine blade support member (40) is rotatably connected to the horizontal support member (43), the horizontal support member (43) is connected to the wind turbine tower (10) through a potential energy storage device (50), the upper support device (30) includes an upper surface (33) and a lower surface (34), the upper surface (33) of the upper support device (30) is above the lower surface (34) of the upper support device (30), the upper support device (30) includes an upper support opening (32), the upper support opening (32) extends from the upper surface (33) of the upper support device (30) to the lower surface (34) of the upper support device (30), the horizontal support member (43) extends through the upper support opening (32), a second wind turbine generator component (62) is fixedly connected to the horizontal support member (43), and a first wind turbine generator component (61) is fixedly connected to the first wind turbine blade support member (40), or fixedly connected to the first wind turbine blade support member (40) and one or more second wind turbine blade support members (440).

15. Use of a potential energy storage device (50) in a wind turbine (1) for restricting the horizontal movement of a first wind turbine blade support (40) and the horizontal movement of a first wind turbine blade (20) fixed to the first wind turbine blade support (40), characterized in that, The first wind turbine blade (20) is arranged to move about a vertical axis (R).

16. The use according to claim 15, characterized in that, The wind turbine (1) is the wind turbine (1) according to any one of claims 1 to 14.

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