Wind turbine with gravity energy storage function

Abstract

The present invention provides a wind turbine with a gravity energy storage function. The wind turbine with a gravity energy storage function includes a wind turbine nacelle, a wind rotor assembly, a power generation assembly, a wind turbine tower, a gravity energy storage assembly, and a transmission assembly. The wind rotor assembly is arranged on the wind turbine nacelle, and the wind rotor assembly can rotate around the axis of the wind rotor assembly relative to the wind turbine nacelle. The power generation assembly is arranged in the wind turbine nacelle, and the wind turbine tower carries the wind turbine nacelle. At least part of the gravity energy storage assembly is arranged in the wind turbine tower, and part of the gravity energy storage assembly can move in a vertical direction relative to the wind turbine tower. Each of the wind rotor assembly, the power generation assembly, and the gravity energy storage assembly can be connected to and disconnected from the transmission assembly. In the wind turbine with a gravity energy storage function of the present invention, each of the wind rotor assembly, the power generation assembly, and the gravity energy storage assembly can be connected to and disconnected from the transmission assembly, so that the gravity energy storage assembly can be arranged in the wind turbine tower, so that the wind turbine with a gravity energy storage function has a smaller structural volume and occupies a smaller space, which is convenient for transportation and installation.

Description

Technical Field

[0001] The present invention relates to the field of wind power generation, and in particular to a wind turbine generator with a gravity energy storage function. Background Art

[0002] The power generated by a wind turbine depends on wind volume and speed, resulting in unstable power generation. This can lead to a mismatch between wind turbine power generation and grid demand. When the wind turbine generates a large amount of power, a certain amount of electricity is wasted. Therefore, related art involves installing a gantry near the wind turbine, using vertically movable weights on the gantry to store excess power. This stored power is then released when wind power is insufficient and / or grid demand is high. However, this gantry solution requires a large amount of space and is difficult to transport and install. Summary of the Invention

[0003] The present invention aims to at least partially address one of the technical problems in the related art. To this end, embodiments of the present invention provide a wind turbine with a gravity energy storage function. The wind turbine with a gravity energy storage function is connectable and disconnectable to a rotor assembly, a power generation assembly, and a gravity energy storage assembly via a transmission assembly, enabling the gravity energy storage assembly to be located within a wind turbine tower. This results in the wind turbine with a gravity energy storage function having a smaller structural volume and footprint, making it easier to transport and install.

[0004] The wind turbine with gravity energy storage function according to the embodiment of the present invention comprises:

[0005] Wind turbine cabin;

[0006] A wind wheel assembly, wherein the wind wheel assembly is arranged on the wind turbine nacelle and is rotatable around an axis of the wind wheel assembly relative to the wind turbine nacelle;

[0007] A power generation component, the power generation component is arranged in the wind turbine cabin;

[0008] a wind turbine tower, the wind turbine tower carrying the wind turbine nacelle;

[0009] a gravity energy storage assembly, at least a portion of which is disposed within the wind turbine tower, and a portion of which is movable in a vertical direction relative to the wind turbine tower;

[0010] A transmission assembly, wherein each of the wind wheel assembly, the power generation assembly and the gravity energy storage assembly is connectable to and detachable from the transmission assembly.

[0011] In the wind turbine with gravity energy storage function according to the embodiment of the present invention, each of the wind wheel assembly, the power generation assembly and the gravity energy storage assembly can be connected to and disconnected from the transmission assembly, so that the gravity energy storage assembly can be installed in the wind turbine tower, so that the wind turbine with gravity energy storage function has a smaller structural volume and occupies a smaller space, which is convenient for transportation and installation.

[0012] In some embodiments, the transmission assembly includes:

[0013] a first bevel gear, the first bevel gear being connected to the wind wheel assembly and being rotatable around the axial direction of the first bevel gear under the drive of the wind wheel assembly;

[0014] a first clutch connected between the first bevel gear and the wind wheel assembly so as to enable the first bevel gear and the wind wheel assembly to be connected and disconnected;

[0015] a second bevel gear, the second bevel gear being connected to the power generation assembly, and the second bevel gear being rotatable about the axial direction of the second bevel gear to drive the power generation assembly;

[0016] a second clutch connected between the second bevel gear and the power generation assembly so that the second bevel gear and the power generation assembly can be connected and disconnected;

[0017] a third bevel gear, the third bevel gear being meshed and connected between the first bevel gear and the second bevel gear;

[0018] a fourth bevel gear, the fourth bevel gear being coaxially arranged with the third bevel gear and capable of rotating synchronously with the third bevel gear;

[0019] a fifth bevel gear, the fifth bevel gear being meshed and connected to the fourth bevel gear, the fifth bevel gear being connected to the gravity energy storage assembly to drive a portion of the gravity energy storage assembly to move in a vertical direction, and to rotate around the axial direction of the fifth bevel gear under the drive of the gravity energy storage assembly;

[0020] A third clutch is connected between the fifth bevel gear and the gravity energy storage assembly to enable the fifth bevel gear and the gravity energy storage assembly to be connected and disconnected.

[0021] In some embodiments, there are at least two gravity energy storage components, there are at least two fifth bevel gears, at least two gravity energy storage components and at least two fifth bevel gears are connected one-to-one, all of the fifth bevel gears are meshed with the fourth bevel gear, there are at least two third clutches, and each gravity energy storage component and the corresponding fifth bevel gear are connected through the corresponding third clutch.

[0022] In some embodiments, the transmission assembly further includes a fourth clutch connected between the third bevel gear and the fourth bevel gear to allow the third bevel gear and the fourth bevel gear to be connected and disconnected.

[0023] In some embodiments, the gravity energy storage assembly includes:

[0024] a winch drum, the winch drum being connectable to and disconnectable from the transmission assembly;

[0025] a twisting rope, one end of which is provided on the winch drum so that the winch drum can wind and release the twisting rope;

[0026] A gravity piece is arranged at the other end of the twisted rope.

[0027] In some embodiments, the winch drum, the winch rope and the gravity member are at least two connected in a one-to-one correspondence, and the gravity energy storage assembly also includes a connecting shaft, all of the winch drums are arranged on the connecting shaft, and the connecting shaft can be connected and disconnected from the transmission assembly.

[0028] In some embodiments, the wind turbine with gravity energy storage function further includes:

[0029] an upper limiter, the upper limiter being arranged in the wind turbine tower and located at the upper end of the moving path of the gravity member; and / or

[0030] A lower limiter is provided in the wind turbine tower and is located at the lower end of the moving path of the gravity member.

[0031] In some embodiments, at least one of the upper limiter and the lower limiter comprises:

[0032] a mounting base connected to the wind turbine tower;

[0033] An elastic member extends in a vertical direction and is arranged at one end of the mounting seat facing the gravity member.

[0034] In some embodiments, at least one of the upper limiter and the lower limiter further includes an abutment member, and the abutment member is provided at one end of the elastic member facing the gravity member.

[0035] In some embodiments, the wind wheel assembly includes blades, a hub, a bearing and a wind wheel shaft, the blades are arranged on the outer circumference of the hub, the hub is coaxially connected to the wind wheel shaft, the bearing is connected between the wind wheel shaft and the wind turbine nacelle, one end of the wind wheel shaft is located in the wind turbine nacelle and can be connected to and disconnected from the transmission assembly; and / or

[0036] The power generation assembly includes a drive shaft, a speed increaser and a generator. One end of the drive shaft can be connected to and disconnected from the transmission assembly, the other end of the drive shaft is connected to the input end of the speed increaser, and the output end of the speed increaser is connected to the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 1 is a schematic structural diagram of a wind turbine with gravity energy storage function according to an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of a wind turbine with gravity energy storage function according to an embodiment of the present invention. Figure 1 ;

[0039] Figure 3 This is a schematic diagram of the structure of a wind turbine with gravity energy storage function according to an embodiment of the present invention. Figure 2 .

[0040] Reference numerals:

[0041] 1. Wind turbine nacelle; 2. Wind rotor assembly; 21. Blades; 22. Hub; 23. Bearing; 24. Wind rotor shaft; 3. Power generation assembly; 31. Drive shaft; 32. Speed ​​increaser; 33. Generator; 34. Electrical control cabinet; 4. Wind turbine tower; 5. Gravity energy storage assembly; 51. Winch drum; 52. Winch rope; 53. Gravity member; 54. Connecting shaft; 6. Transmission assembly; 61. First bevel gear; 62. First clutch; 63. Second bevel gear; 64. Second clutch; 65. Third bevel gear; 66. Fourth bevel gear; 67. Fifth bevel gear; 68. Third clutch; 69. Fourth clutch; 7. Upper limiter; 8. Lower limiter; 9. Mounting seat; 10. Elastic member; 11. Abutment member. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0043] Reference below Figure 1-Figure 3 A wind turbine generator with gravity energy storage function according to an embodiment of the present invention is described.

[0044] like Figure 1-Figure 3 As shown, the wind turbine with gravity energy storage function according to an embodiment of the present invention includes a wind turbine nacelle 1 , a wind wheel assembly 2 , a power generation assembly 3 , a wind turbine tower 4 , a gravity energy storage assembly 5 and a transmission assembly 6 .

[0045] The rotor assembly 2 is mounted on the wind turbine nacelle 1 and is rotatable relative to the wind turbine nacelle 1 about its axis. The power generation assembly 3 is mounted within the wind turbine nacelle 1. A wind turbine tower 4 supports the wind turbine nacelle 1. At least a portion of the gravity energy storage assembly 5 is mounted within the wind turbine tower 4 and is vertically movable relative to the wind turbine tower 4. A transmission assembly 6 is configured to connect and disconnect the rotor assembly 2, power generation assembly 3, and gravity energy storage assembly 5, respectively.

[0046] Specifically, such as Figure 1 As shown, the wind turbine nacelle 1 extends in the left-right direction, the wind wheel assembly 2 is arranged at the left end of the wind turbine nacelle 1, and the wind wheel assembly 2 can rotate in the left-right direction relative to the wind turbine nacelle 1, and the power generation assembly 3 is arranged in the wind turbine nacelle 1 and is located at the right end of the wind turbine nacelle 1.

[0047] The wind tower 4 extends in a vertical direction, the wind nacelle 1 is arranged at the top of the wind tower 4, and the interior of the wind nacelle 1 is connected to the interior of the wind tower 4, and the gravity energy storage assembly 5 is arranged at the connection between the interior of the wind nacelle 1 and the interior of the wind tower 4. Preferably, the top of the gravity energy storage assembly 5 is located in the wind nacelle 1, and the bottom of the gravity energy storage assembly 5 is located in the wind tower 4. Part of the gravity energy storage assembly 5 can move in a vertical direction relative to the wind tower 4.

[0048] Each of the wind rotor assembly 2, the power generation assembly 3, and the gravity energy storage assembly 5 is connectable to and disconnectable from the transmission assembly 6. When the transmission assembly 6 connects the wind rotor assembly 2 and the power generation assembly 3, and the gravity energy storage assembly 5 is disconnected, wind energy is converted into electrical energy. When the transmission assembly 6 connects the wind rotor assembly 2 and the gravity energy storage assembly 5, and the power generation assembly 3 is disconnected, the wind rotor assembly 2 drives a portion of the gravity energy storage assembly 5 to move upward to convert wind energy into gravitational potential energy. When the transmission assembly 6 connects the gravity energy storage assembly 5 and the power generation assembly 3, and the wind rotor assembly 2 is disconnected, a portion of the gravity energy storage assembly 5 moves downward and drives the power generation assembly 3 to convert gravitational potential energy into electrical energy, thereby having the function of gravity energy storage.

[0049] Preferably, the wind turbine nacelle 1 has a yaw system, and the wind turbine nacelle 1 can rotate around the vertical direction according to the wind direction so that the wind wheel assembly 2 is aligned with the wind direction. The transmission assembly 6 and / or the gravity energy storage assembly 5 are connected to the wind turbine nacelle 1 through a bracket so that they can rotate synchronously with the wind turbine nacelle 1.

[0050] In the wind turbine with gravity energy storage function according to the embodiment of the present invention, each of the wind wheel assembly, the power generation assembly and the gravity energy storage assembly can be connected to and disconnected from the transmission assembly, so that the gravity energy storage assembly can be installed in the wind turbine tower, so that the wind turbine with gravity energy storage function has a smaller structural volume and occupies a smaller space, which is convenient for transportation and installation.

[0051] In some embodiments, the transmission assembly 6 includes a first bevel gear 61 , a first clutch 62 , a second bevel gear 63 , a second clutch 64 , a third bevel gear 65 , a fourth bevel gear 66 , a fifth bevel gear 67 and a third clutch 68 .

[0052] The first bevel gear 61 is connected to the wind rotor assembly 2, and the first bevel gear 61 can rotate around the axial direction of the first bevel gear 61 under the drive of the wind rotor assembly 2. The first clutch 62 is connected between the first bevel gear 61 and the wind rotor assembly 2 to enable the first bevel gear 61 and the wind rotor assembly 2 to be connected and disconnected.

[0053] Specifically, such as Figure 1 and Figure 2 As shown, the wind rotor assembly 2 is arranged in the left-right direction, and the first bevel gear 61 is coaxially connected to the wind rotor assembly 2 and is located on the right side of the wind rotor assembly 2. The first bevel gear 61 is arranged vertically, and the right end face of the first bevel gear 61 is a bevel tooth surface. The first bevel gear 61 can rotate in the left-right direction under the drive of the wind rotor assembly 2. The first clutch 62 is connected between the first bevel gear 61 and the wind rotor assembly 2 to connect and disconnect the first bevel gear 61 and the wind rotor assembly 2 through the first clutch 62.

[0054] The second bevel gear 63 is connected to the power generation component 3 and can rotate around the axial direction of the second bevel gear 63 to drive the power generation component 3. The second clutch 64 is connected between the second bevel gear 63 and the power generation component 3 to enable the second bevel gear 63 and the power generation component 3 to be connected and disconnected.

[0055] Specifically, such as Figure 1 and Figure 2 As shown, the power generation assembly 3 is arranged in the left-right direction. The second bevel gear 63 is coaxially connected to the power generation assembly 3 and is located on the left side of the power generation assembly 3. The second bevel gear 63 is arranged vertically, and the left end face of the second bevel gear 63 is a bevel tooth surface. The second bevel gear 63 rotates in the left-right direction to drive the power generation assembly 3. The second clutch 64 is connected between the second bevel gear 63 and the power generation assembly 3 to connect and disconnect the second bevel gear 63 and the power generation assembly 3 through the second clutch 64.

[0056] The third bevel gear 65 is meshedly connected between the first bevel gear 61 and the second bevel gear 63. The fourth bevel gear 66 is coaxially arranged with the third bevel gear 65, and the fourth bevel gear 66 can rotate synchronously with the third bevel gear 65.

[0057] Specifically, such as Figure 1 and Figure 2As shown, the third bevel gear 65 is arranged in the horizontal direction, and the upper end surface of the third bevel gear 65 is a bevel tooth surface. The third bevel gear 65 is located between the first bevel gear 61 and the second bevel gear 63, and is simultaneously meshed and connected with the first bevel gear 61 and the second bevel gear 63, so that the third bevel gear 65 can rotate in the vertical direction under the drive of the first bevel gear 61, and can drive the second bevel gear 63 to rotate in the left and right directions. The fourth bevel gear 66 and the third bevel gear 65 are arranged at intervals in the vertical direction, and the fourth bevel gear 66 is located below the third bevel gear 65 to facilitate connection to the gravity energy storage assembly 5. The fourth bevel gear 66 and the third bevel gear 65 are connected by a rotating shaft so that the fourth bevel gear 66 can rotate synchronously with the third bevel gear 65. The fourth bevel gear 66 is arranged in the horizontal direction, and the lower end surface is a bevel tooth surface.

[0058] The fifth bevel gear 67 is meshed with the fourth bevel gear 66 and is connected to the gravity energy storage assembly 5 to drive a portion of the gravity energy storage assembly 5 to move vertically and to rotate about the axial direction of the fifth bevel gear 67 under the drive of the gravity energy storage assembly 5. The third clutch 68 is connected between the fifth bevel gear 67 and the gravity energy storage assembly 5 to enable the fifth bevel gear 67 and the gravity energy storage assembly 5 to be connected and disconnected.

[0059] Specifically, such as Figure 1 and Figure 2 As shown, the fifth bevel gear 67 is arranged in the vertical direction and is located on the left or right side of the fourth bevel gear 66. The end face of the fifth bevel gear 67 facing the fourth bevel gear 66 is a bevel tooth surface and is meshed and connected with the fourth bevel gear 66. The fifth bevel gear 67 is connected to the gravity energy storage assembly 5.

[0060] When the first clutch 62 and the third clutch 68 are in a connected state and the second clutch 64 is in a disengaged state, the first bevel gear 61 drives the fifth bevel gear 67 to rotate through the third bevel gear 65 and the fourth bevel gear 66, thereby driving part of the gravity energy storage assembly 5 to move upward to convert wind energy into gravitational potential energy.

[0061] When the first clutch 62 is in the disengaged state and the second clutch 64 and the third clutch 68 are in the connected state, part of the gravity energy storage assembly 5 moves downward under the action of gravity to drive the fifth bevel gear 67 to rotate, and drives the second bevel gear 63 to rotate through the third bevel gear 65 and the fourth bevel gear 66 to drive the power generation assembly 3 to convert the gravitational potential energy into electrical energy.

[0062] When the first clutch 62 and the second clutch 64 are connected and the third clutch 68 is disengaged, the first bevel gear 61 drives the second bevel gear 63 to rotate through the third bevel gear 65 to drive the power generation component 3 to convert wind energy into electrical energy.

[0063] In some embodiments, there are at least two gravity energy storage components 5, at least two fifth bevel gears 67, at least two gravity energy storage components 5 and at least two fifth bevel gears 67 are connected one-to-one, all fifth bevel gears 67 are meshed with the fourth bevel gear 66, there are at least two third clutches 68, and each gravity energy storage component 5 and the corresponding fifth bevel gear 67 are connected through the corresponding third clutch 68.

[0064] like Figure 2 As shown, there are preferably two gravity energy storage assemblies 5, and the two gravity energy storage assemblies 5 are spaced apart and arranged relative to each other in the left and right directions to ensure the weight balance of the wind turbine tower 4 and prevent it from tipping over. There are preferably two fifth bevel gears 67, with a fifth bevel gear 67 provided at the right end of the left gravity energy storage assembly 5, and the right end face of the fifth bevel gear 67 is a bevel tooth surface, and another fifth bevel gear 67 is provided at the left end of the right gravity energy storage assembly 5, and the left end face of the fifth bevel gear 67 is a bevel tooth surface. The fourth bevel gear 66 is located between the two fifth bevel gears 67 and is simultaneously engaged with the two fifth bevel gears 67 to simultaneously drive parts of the two gravity energy storage assemblies 5 to move upward and rotate under the drive of the two gravity energy storage assemblies 5. In this way, more wind energy can be converted into gravitational potential energy, and more gravitational potential energy can be converted into electrical energy.

[0065] A third clutch 68 is provided between the left gravity energy storage assembly 5 and the fifth bevel gear 67 on the left, and another third clutch 68 is provided between the right gravity energy storage assembly 5 and the fifth bevel gear 67 on the right, so that any one of the gravity energy storage assemblies 5 can be disengaged from the corresponding fifth bevel gear 67. When the wind energy is not enough to drive the two gravity energy storage assemblies 5, one of the gravity energy storage assemblies 5 can be disengaged. When the wind energy is large, the two gravity energy storage assemblies 5 can be connected at the same time, so that the capacity of the gravity energy storage can be adjusted according to different wind powers, and the ability to adapt to different wind powers can be achieved. When the power demanded by the power grid is less than the electric energy converted by the two gravity energy storage assemblies 5, one of the gravity energy storage assemblies 5 can be disengaged. When the power demanded by the power grid is large, the two gravity energy storage assemblies 5 can be connected at the same time, so that different energy storage power generation powers can be achieved according to different power grid requirements, and the ability to adjust the power generation power can be achieved.

[0066] It is understandable that the gravity energy storage components are not limited to two. In other embodiments, there is not only one gravity energy storage component, but also three or more gravity energy storage components, which are arranged at intervals in the vertical direction.

[0067] In some embodiments, the transmission assembly 6 further includes a fourth clutch 69 , which is connected between the third bevel gear 65 and the fourth bevel gear 66 , so that the third bevel gear 65 and the fourth bevel gear 66 can be connected and disconnected.

[0068] like Figure 2 As shown, a fourth clutch 69 is provided on the rotating shaft connecting the third bevel gear 65 and the fourth bevel gear 66. The fourth clutch 69 is used to connect and disengage the third bevel gear 65 and the fourth bevel gear 66, so as to simultaneously connect and disengage the two gravity energy storage assemblies 5 with the third bevel gear 65. In other words, the third clutch 68 is used to control the connection state of a corresponding gravity energy storage assembly 5, and the fourth clutch 69 is used to control the connection state of all gravity energy storage assemblies 5 connected to the fourth bevel gear 66.

[0069] When the wind nacelle 1 rotates vertically according to the wind direction under the drive of the yaw system, the fourth clutch 69 is disengaged, and the first bevel gear 61, the first clutch 62, the second bevel gear 63, the second clutch 64, the third bevel gear 65, and the upper end portion of the fourth clutch 69 move synchronously with the wind nacelle 1. The lower end portion of the fourth clutch 69, the fourth bevel gear 66, the fifth bevel gear 67, the third clutch 68, and the gravity energy storage assembly 5 are fixed relative to the wind tower 4. This avoids interference between the transmission assembly and the wind nacelle when the wind nacelle rotates vertically, and also avoids shaking and collision caused by the synchronous movement of the gravity energy storage assembly with the wind nacelle.

[0070] It is understandable that the transmission assembly is not limited to having a fourth clutch. In other embodiments, the transmission assembly does not have a fourth clutch, and the connection state of at least two gravity energy storage assemblies is controlled by simultaneously connecting and disengaging at least two third clutches.

[0071] In some embodiments, the gravity energy storage assembly 5 includes a winch drum 51, a winch rope 52, and a weight 53. The winch drum 51 is connectable to and disconnectable from the transmission assembly 6. One end of the winch rope 52 is mounted on the winch drum 51, allowing the winch drum 51 to wind and release the winch rope 52. The weight 53 is mounted on the other end of the winch rope 52.

[0072] like Figure 2 As shown, the winch drum 51 extends in the left-right direction, one end of the winch drum 51 is connected to the corresponding fifth bevel gear 67 through the corresponding third clutch 68, one end of the rope 52 is provided on the winch drum 51, and the other end of the rope 52 is provided with a gravity member 53. Driven by the fifth bevel gear 67, the winch drum 51 can rotate in the left-right direction in the forward direction to wind the rope 52, causing the gravity member 53 to move upward, thereby converting wind energy into gravitational potential energy. When the gravity member 53 moves downward, the winch drum 51 can also rotate in the left-right direction in the reverse direction due to the pulling force released by the rope 52, thereby driving the fifth bevel gear 67, thereby converting gravitational potential energy into electrical energy.

[0073] It is understandable that the gravity energy storage assembly is not limited to having a winch drum. In other embodiments, one end of the winch rope is provided on a rotating shaft, and the rotating shaft is connected to the corresponding fifth bevel gear through the corresponding third clutch.

[0074] In some embodiments, the winch drum 51, the rope 52 and the gravity member 53 are at least two connected in a one-to-one correspondence, and the gravity energy storage assembly 5 also includes a connecting shaft 54. All the winch drums 51 are arranged on the connecting shaft 54, and the connecting shaft 54 ​​can be connected and disconnected with the transmission assembly 6.

[0075] like Figure 3 As described above, one end of the third clutch 68 is connected to the corresponding fifth bevel gear 67, and the other end of the third clutch 68 is connected to the connecting shaft 54. The connecting shaft 54 ​​extends in the left-right direction. The connecting shaft 54 ​​is preferably provided with two winch drums 51, so that the two winch drums 51 can rotate synchronously through the connecting shaft 54. Each winch drum 51 is provided with a rope 52 and a gravity member 53. In other words, each gravity energy storage assembly 5 preferably includes two winch drums 51, a rope 52 and a gravity member 53. This can convert more wind energy into gravitational potential energy, and more gravitational potential energy into electrical energy.

[0076] Furthermore, the winch drum 51 and connecting shaft 54 ​​are connected via a fifth clutch to control the connection and disconnection of the winch drum and the connecting shaft. This allows the gravity energy storage assembly to have a variety of adjustable capacities depending on the connection and disconnection states of the fifth clutch, enabling the wind turbine with gravity energy storage according to the present invention to further adapt to a variety of wind power levels and achieve a variety of adjustable power outputs.

[0077] In some embodiments, the wind turbine with gravity energy storage function according to embodiments of the present invention further includes an upper limiter 7 and / or a lower limiter 8. The upper limiter 7 is disposed within the wind turbine tower 4 and is located at the upper end of the travel path of the gravity member 53. The lower limiter 8 is disposed within the wind turbine tower 4 and is located at the lower end of the travel path of the gravity member 53.

[0078] like Figure 1 As shown, an upper limiter 7 and a lower limiter 8 are provided on the inner wall of the wind turbine tower 4. The upper limiters 7 and the lower limiters 8 are arranged at intervals in the vertical direction and are located on the movement path of the corresponding weight members 53. In other words, an upper limiter 7 and a lower limiter 8 are provided on the movement path of each weight member 53. The upper limiter 7 limits the upper limit position of the weight member 53 for upward movement, and the lower limiter 8 limits the lower limit position of the weight member 53 for downward movement, thereby preventing the weight member 53 from colliding with other components and causing accidents.

[0079] In some embodiments, at least one of the upper stopper 7 and the lower stopper 8 includes a mounting base 9 and an elastic member 10. The mounting base 9 is connected to the wind turbine tower 4. The elastic member 10 extends in a vertical direction and is disposed at one end of the mounting base 9 facing the gravity member 53.

[0080] like Figure 1 As described above, the upper limiter 7 and the lower limiter 8 both include a mounting seat 9 and an elastic member 10. The mounting seat 9 and the elastic member 10 of the upper limiter 7 are connected in sequence from top to bottom, and the mounting seat 9 and the elastic member 10 of the lower limiter 8 are connected in sequence from bottom to top, so that the elastic member 10 can buffer the gravity member 53.

[0081] In some embodiments, at least one of the upper limiter 7 and the lower limiter 8 further includes an abutment member 11 , and the abutment member 11 is provided at one end of the elastic member 10 facing the gravity member 53 .

[0082] like Figure 1 As shown, the upper limiter 7 and the lower limiter 8 both include abutment members 11. The abutment members 11 of the upper limiter 7 are arranged at the lower end of the elastic member 10, and the abutment members 11 of the lower limiter 8 are arranged at the upper end of the elastic member 10. The gravity member 53 abuts against the corresponding abutment members 11 when the upper limiter 7 and the lower limiter 8 abut against each other, so as to avoid the gravity member 53 being misaligned with the elastic member 10 and unable to be buffered.

[0083] In some embodiments, the wind wheel assembly 2 includes blades 21, a hub 22, a bearing 23 and a wind wheel shaft 24. The blades 21 are arranged on the outer peripheral surface of the hub 22. The hub 22 is coaxially connected to the wind wheel shaft 24. The bearing 23 is connected between the wind wheel shaft 24 and the wind turbine nacelle 1. One end of the wind wheel shaft 24 is located in the wind turbine nacelle 1 and can be connected and disconnected with the transmission assembly 6.

[0084] like Figure 1 and Figure 2 As shown, the rotor shaft 24 is located inside the left end of the wind turbine nacelle 1. The rotor shaft 24 extends in the left-right direction. The right end of the rotor shaft 24 is connected to the first clutch 62, and the left end of the rotor shaft 24 is connected to the hub 22. The outer circumference of the hub 22 is provided with a plurality of blades 21 spaced along its circumference, so as to receive wind energy through the blades 21 and drive the hub 22 and the rotor shaft 24 to rotate in the left-right direction, thereby driving the first bevel gear 61 to rotate. A bearing 23 is provided on the outer circumference of the left end of the rotor shaft 24. The outer circumference of the bearing 23 is connected to the wind turbine nacelle 1 so that the rotor shaft 24 can rotate in the left-right direction and is provided on the wind turbine nacelle 1. Preferably, a guide cover is provided on the outer cover of the hub 22.

[0085] In some embodiments, the power generation component 3 includes a drive shaft 31, a speed increaser 32 and a generator 33. One end of the drive shaft 31 can be connected and disconnected with the transmission component 6, the other end of the drive shaft 31 is connected to the input end of the speed increaser 32, and the output end of the speed increaser 32 is connected to the generator 33.

[0086] like Figure 1 and Figure 2 As shown, the drive shaft 31 extends in the left-right direction. The left end of the drive shaft 31 is connected to the second clutch 64, so that it rotates in the left-right direction under the drive of the second bevel gear 63. The right end of the drive shaft 31 is connected to the input end of the speed increaser 32, and the output end of the speed increaser 32 is connected to the generator 33 to drive the generator 33 to generate electricity. Preferably, a mounting bracket is provided in the wind turbine nacelle 1, and the mounting bracket extends in the left-right direction. The speed increaser 32 and the generator 33 are mounted on the mounting bracket.

[0087] Furthermore, the power generation assembly 3 also includes an electrical control cabinet 34. The upper limiter 7 and the lower limiter 8 are respectively provided with a signal transmitter. The electrical control cabinet 34 is electrically connected to the signal transmitter to obtain the signal from the signal transmitter. The electrical control cabinet 34 is also electrically connected to the third clutch 68 and / or the fourth clutch 69. When the electrical control cabinet 34 receives the signal from the signal transmitter, it can control the corresponding third clutch 68 and / or fourth clutch 69 to connect and disconnect, so as to stop the gravity energy storage assembly 5 from moving or move in the reverse direction, thereby preventing the gravity member 53 from exceeding the specified limit position. The electrical control cabinet 34 is also electrically connected to the yaw system and the fourth clutch 69 to obtain the signal from the yaw system and control the connection and disconnection of the fourth clutch 69.

[0088] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0089] Furthermore, the terms "first," "second," and the like are used solely for distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0090] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0091] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0092] In the present invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0093] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A wind turbine with gravity energy storage function, characterized in that: include: Wind turbine cabin; A wind wheel assembly, wherein the wind wheel assembly is arranged on the wind turbine nacelle and is rotatable around an axis of the wind wheel assembly relative to the wind turbine nacelle; A power generation component, the power generation component is arranged in the wind turbine cabin; a wind turbine tower, the wind turbine tower carrying the wind turbine nacelle; a gravity energy storage assembly, at least a portion of which is disposed within the wind turbine tower, and a portion of which is movable in a vertical direction relative to the wind turbine tower; A transmission assembly, each of the wind wheel assembly, the power generation assembly and the gravity energy storage assembly can be connected to and disconnected from the transmission assembly, and the transmission assembly includes a first bevel gear, a first clutch, a second bevel gear, a second clutch, a third bevel gear, a fourth bevel gear, a fifth bevel gear and a third clutch, the first bevel gear is connected to the wind wheel assembly, and the first bevel gear can rotate around the axial direction of the first bevel gear under the drive of the wind wheel assembly, the first clutch is connected between the first bevel gear and the wind wheel assembly so that the first bevel gear and the wind wheel assembly can be connected to and disconnected, the second bevel gear is connected to the power generation assembly, and the second bevel gear can rotate around the axial direction of the second bevel gear to drive the power generation assembly, the second clutch It is connected between the second bevel gear and the power generation assembly so that the second bevel gear and the power generation assembly can be connected and disengaged, the third bevel gear is meshed and connected between the first bevel gear and the second bevel gear, the fourth bevel gear is coaxially arranged with the third bevel gear, and the fourth bevel gear can rotate synchronously with the third bevel gear, the fifth bevel gear is meshed and connected with the fourth bevel gear, and the fifth bevel gear is connected to the gravity energy storage assembly to drive part of the gravity energy storage assembly to move in the vertical direction, and to rotate around the axial direction of the fifth bevel gear under the drive of the gravity energy storage assembly, and the third clutch is connected between the fifth bevel gear and the gravity energy storage assembly so that the fifth bevel gear and the gravity energy storage assembly can be connected and disengaged.

2. The wind turbine with gravity energy storage function according to claim 1, characterized in that: There are at least two gravity energy storage assemblies, at least two fifth bevel gears, at least two gravity energy storage assemblies and at least two fifth bevel gears are connected in a one-to-one correspondence, all of the fifth bevel gears are meshed with the fourth bevel gear, and there are at least two third clutches, each gravity energy storage assembly and the corresponding fifth bevel gear are connected through the corresponding third clutch.

3. The wind turbine with gravity energy storage function according to claim 1 or 2, characterized in that: The transmission assembly further includes a fourth clutch connected between the third bevel gear and the fourth bevel gear to enable the third bevel gear and the fourth bevel gear to be connected and disconnected.

4. The wind turbine with gravity energy storage function according to claim 1, characterized in that: The gravity energy storage assembly includes: a winch drum, the winch drum being connectable to and disconnectable from the transmission assembly; a twisting rope, one end of which is provided on the winch drum so that the winch drum can wind and release the twisting rope; A gravity piece is arranged at the other end of the twisted rope.

5. The wind turbine with gravity energy storage function according to claim 4, characterized in that: The winch drum, the winch rope and the gravity member are at least two connected in a one-to-one correspondence. The gravity energy storage assembly also includes a connecting shaft. All the winch drums are arranged on the connecting shaft. The connecting shaft can be connected to and disconnected from the transmission assembly.

6. The wind turbine with gravity energy storage function according to claim 4, characterized in that: Also includes: an upper limiter, the upper limiter being arranged in the wind turbine tower and located at an upper end of the moving path of the gravity member; and / or A lower limiter is provided in the wind turbine tower and is located at the lower end of the moving path of the gravity member.

7. The wind turbine with gravity energy storage function according to claim 6, characterized in that: At least one of the upper limiter and the lower limiter comprises: a mounting base connected to the wind turbine tower; An elastic member extends in a vertical direction and is arranged at one end of the mounting seat facing the gravity member.

8. The wind turbine with gravity energy storage function according to claim 7, characterized in that: At least one of the upper limiter and the lower limiter further includes an abutment member, and the abutment member is provided at one end of the elastic member facing the gravity member.

9. The wind turbine with gravity energy storage function according to claim 1, characterized in that: The wind rotor assembly includes blades, a hub, a bearing, and a wind rotor shaft. The blades are arranged on the outer circumference of the hub. The hub is coaxially connected to the wind rotor shaft. The bearing is connected between the wind rotor shaft and the wind turbine nacelle. One end of the wind rotor shaft is located in the wind turbine nacelle and can be connected to and disconnected from the transmission assembly. and / or The power generation assembly includes a drive shaft, a speed increaser and a generator. One end of the drive shaft can be connected to and disconnected from the transmission assembly, the other end of the drive shaft is connected to the input end of the speed increaser, and the output end of the speed increaser is connected to the generator.

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