Vertical axis fan structure

Abstract

The utility model relates to the technical field of fan power generation, in particular to a vertical shaft fan structure. The vertical shaft fan structure comprises a wind wheel main shaft, a speed increasing box, a generator, a tower drum and at least one blade. The blades are circumferentially arranged on the wind wheel main shaft and extend in the height direction of the wind wheel main shaft; the top of the wind wheel spindle is connected with the top of the speed-increasing gearbox, the bottom of the speed-increasing gearbox is connected with the top of the generator, and the bottom of the generator is connected with the top of the tower drum. Therefore, the fan structure can be simplified, and the cooling efficiency and the power generation efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan power generation, and more specifically, to a vertical axis fan structure. Background Art

[0002] At present, the vertical axis fan structure for micro wind power generation has the following deficiencies:

[0003] 1. The speed increasing box power generation assembly is built in the nacelle, and the heat dissipation is insufficient, so a special forced cooling mechanism is required.

[0004] 2. The speed increasing box power generation assembly is arranged on the ground, and a very long transmission shaft is required to connect the top wind wheel and the input power of the ground speed increasing box, which greatly increases the cost and reduces the power generation efficiency.

[0005] 3. The wind wheel main shaft is supported on the tower barrel bearing seat, the speed increasing box power generation assembly is built in the nacelle, and the power is transmitted through the transmission shaft and the coupling. The integration degree is low, the transmission chain is long and the structure is complex, which greatly increases the cost and reduces the power generation efficiency. Summary of the Utility Model

[0006] The purposes of the utility model include, for example, providing a vertical axis fan structure, which can simplify the fan structure, increase the cooling efficiency and improve the power generation efficiency.

[0007] The embodiments of the utility model can be implemented as follows:

[0008] In a first aspect, the utility model provides a vertical axis fan structure, comprising:

[0009] A wind wheel main shaft, a speed increasing box, a generator, a tower barrel and at least one blade;

[0010] The blades are circumferentially arranged on the wind wheel main shaft, and the blades extend along the height direction of the wind wheel main shaft;

[0011] The top of the wind wheel main shaft is connected to the top of the speed increasing box, the bottom of the speed increasing box is connected to the top of the generator, and the bottom of the generator is connected to the top of the tower barrel.

[0012] In an alternative embodiment, a main shaft flange is further included, and the bottom of the wind wheel main shaft is detachably connected to the top of the speed increasing box through the main shaft flange.

[0013] In an alternative embodiment, an input flange is further included;

[0014] The top of the input flange is detachably connected to the main shaft flange, and the bottom of the input flange is connected to the top of the speed increasing box.

[0015] In an alternative embodiment, the input flange is connected to the speed increaser box by a key body.

[0016] In an alternative embodiment, the bottom of the input flange has a connection hole, and the top of the low-speed input shaft of the speed increaser box is fixedly arranged in the connection hole through a flat key.

[0017] In an alternative embodiment, it further includes a base flange. The bottom of the generator is connected to the top of the base flange, and the bottom of the base flange is detachably connected to the top of the tower barrel.

[0018] In an alternative embodiment, it further includes a bottom connection flange;

[0019] The bottom of the tower barrel is arranged on the installation base through the bottom connection flange.

[0020] In an alternative embodiment, it further includes an upper connecting rod, a middle connecting rod, and a lower connecting rod;

[0021] Along the height direction of the wind turbine main shaft, the upper connecting rod, the middle connecting rod, and the lower connecting rod are arranged in sequence; and the upper part of the blade is connected to the wind turbine main shaft through the upper connecting rod, the middle part of the blade is connected to the wind turbine main shaft through the middle connecting rod, and the lower part of the blade is connected to the wind turbine main shaft through the lower connecting rod.

[0022] In an alternative embodiment, the speed increaser box includes a box body, a low-speed input shaft, a high-speed output shaft, and a planetary gear mechanism;

[0023] The planetary gear mechanism includes a planetary carrier, a sun gear, a ring gear, and a plurality of planetary gears;

[0024] The wind turbine main shaft can be connected to the low-speed input shaft. The low-speed input shaft is fixedly connected to the planetary carrier. Each planetary gear is rotatably arranged on the planetary carrier through a corresponding planetary shaft. The ring gear is fixedly arranged in the box body. A plurality of planetary gears are all meshed with the sun gear; the sun gear is fixedly connected to the high-speed output shaft;

[0025] When the wind turbine main shaft rotates, it drives the low-speed input shaft, the planetary carrier, the sun gear, and the high-speed output shaft to rotate in sequence, so as to achieve the speed increasing operation; the sun gear can be connected to the motor shaft of the generator.

[0026] In an alternative embodiment, a first channel is provided at the top of the box body. The first channel penetrates through the top of the box body to form a first opening; the bottom of the box body has a boss, and a second channel is provided on the boss. The second channel penetrates through the top surface of the boss to form a second opening;

[0027] The low-speed input shaft is hermetically connected to the first channel through an upper double-layer skeleton oil seal, and a dust-proof disc is provided on the first opening;

[0028] The high-speed output shaft is hermetically arranged in the second channel through a lower double-layer skeleton oil seal; an oil slinger is sleeved on the lower end of the high-speed output shaft; the oil slinger is located above the second opening; along the axial direction of the high-speed output shaft, the projection of the second opening is entirely located within the oil slinger.

[0029] The beneficial effects of the embodiments of the present invention include, for example:

[0030] The vertical-axis wind turbine structure of this solution includes a wind wheel main shaft, a speed increaser box, a generator, a tower barrel, and at least one blade. The blades are circumferentially arranged on the wind wheel main shaft to form a vertical-axis wind turbine, thereby meeting the advantages of small structural dimensions, being able to be used under relatively low wind conditions, having a small footprint, and being convenient for transportation. Along the height direction of the wind wheel main shaft, the speed increaser box, the generator, and the tower barrel are sequentially arranged at the bottom of the wind wheel main shaft. Such an arrangement integrates the speed increaser box power generation assembly onto the wind wheel main shaft and uses it as a tower column support, eliminating the bearing seat, external nacelle, transmission shaft, and coupling for the support of the wind wheel main shaft, making the structure compact, with high integration, reducing costs, and improving power generation efficiency. The speed increaser box power generation assembly is arranged at the top of the wind turbine, directly connected to the wind wheel main shaft, eliminating the cost of a very long transmission shaft and improving power generation efficiency. At the same time, the speed increaser box, the generator, etc. are integrated into a part of the wind turbine tower column, exposed in the wind farm, and rely on the wind speed in the wind farm for cooling, eliminating the forced cooling mechanism and the external nacelle, reducing costs, and improving cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of the vertical-axis wind turbine structure of the embodiments of the present invention;

[0033] Figure 2 It is a partially enlarged schematic diagram of the vertical-axis wind turbine structure of the embodiments of the present invention;

[0034] Figure 3 It is a cross-sectional view of the speed increaser box and generator part of the vertical-axis wind turbine structure of the embodiments of the present invention;

[0035] Figure 4 It is a cross-sectional view of the speed increaser box of the vertical-axis wind turbine structure of the embodiments of the present invention.

[0036] Icons: 11 - wind turbine main shaft; 12 - speed increaser; 12a - low - speed input shaft; 12b - high - speed output shaft; 13 - generator; 14 - tower barrel; 15 - blade; 16 - connecting hub; 100 - main shaft flange; 200 - input flange; 210 - connecting hole; 220 - flat key; 300 - base flange; 400 - bottom connecting flange; 510 - upper connecting rod; 520 - middle connecting rod; 530 - lower connecting rod; 610 - first bolt; 620 - second bolt; 630 - third bolt; 700 - box body; 711 - first channel; 712 - first opening; 713 - upper double - layer skeleton oil seal; 714 - dust - proof disc; 720 - boss; 721 - second channel; 722 - second opening; 723 - lower double - layer skeleton oil seal; 724 - oil slinger; 725 - accommodating space; 820 - planetary gear mechanism; 821 - planet carrier; 822 - sun gear; 823 - ring gear; 824 - planet gear; 825 - planet shaft. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model.

[0041] In addition, terms such as "first" and "second" are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0042] It should be noted that, without conflict, the features in the embodiments of the present utility model can be combined with each other.

[0043] In the existing wind power generation technology, three-blade horizontal-axis windmills are commonly used. With the technological update, it has developed to the fourth generation, and the manufacturing cost has dropped from more than 40 million yuan per unit in the early stage to about 15 million yuan per unit at present. Due to the high price of the horizontal windmill and the special installation conditions of the air outlet (a wind shear needs to be built in advance for year-round tracking and detection when installing the fan), the horizontal-axis fan can only generate electricity normally under the condition of six to seven-level wind. Moreover, due to the large volume and top-heavy of the horizontal-axis fan, its installation and transportation are relatively difficult, and several heavy cranes need to cooperate during installation to complete the work.

[0044] To solve the above technical problems, in some areas, such as areas with small wind power or inconvenient transportation, a vertical-axis wind power system can be used for power generation. The vertical-axis wind power system has a small structural size and can be used under the condition of small wind power. It has a small floor area and is convenient for transportation (modular structural design). Compared with the horizontal wind power blade 15, the length of the blade 15 is short, and the requirements for the construction site are not high. The interval between single wind turbines can be 20 meters (traditional 50 meters), which can further improve the utilization rate of the site. However, the existing vertical-axis fans for micro-wind power generation have the following deficiencies:

[0045] 1. The speed increaser 12 and the power generation assembly are built in the nacelle, and the heat dissipation is not sufficient, and a special forced cooling mechanism is required.

[0046] 2. The speed increaser 12 and the power generation assembly are arranged on the ground, and a very long transmission shaft is required to connect the top wind wheel and the input power of the ground speed increaser 12, which greatly increases the cost and reduces the power generation efficiency.

[0047] 3. The wind wheel main shaft 11 is supported on the bearing seat of the tower barrel 14, the speed increaser 12 and the power generation assembly are built in the nacelle, and the power is transmitted through the transmission shaft and the coupling. The degree of integration is low, the transmission chain is long and the structure is complex, which greatly increases the cost and reduces the power generation efficiency.

[0048] To improve the above technical problems, a vertical-axis fan structure is provided in the following embodiments.

[0049] Please refer to Figure 1 , this embodiment provides a vertical-axis fan structure, including a wind wheel main shaft 11, a speed increaser 12, a generator 13, a tower barrel 14 and at least one blade 15.

[0050] The blade 15 is circumferentially arranged on the wind turbine main shaft 11, and the blade 15 extends along the height direction of the wind turbine main shaft 11;

[0051] The top of the wind turbine main shaft 11 is connected to the top of the speed increaser 12, the bottom of the speed increaser 12 is connected to the top of the generator 13, and the bottom of the generator 13 is connected to the top of the tower barrel 14.

[0052] The vertical axis wind turbine structure of this solution includes a wind turbine main shaft 11, a speed increaser 12, a generator 13, a tower barrel 14 and at least one blade 15. The blade 15 is circumferentially arranged on the wind turbine main shaft 11 to form a vertical axis wind turbine, so as to meet the advantages of small structural size, being able to be used under the condition of relatively small wind force, small floor area and convenient transportation. Along the height direction of the wind turbine main shaft 11, the speed increaser 12, the generator 13 and the tower barrel 14 are sequentially arranged at the bottom of the wind turbine main shaft. Such an arrangement integrates the speed increaser 12 power generation assembly with the wind turbine main shaft 11 and uses it as a tower column support, eliminating the bearing seat, external nacelle, transmission shaft and coupling for supporting the wind turbine main shaft 11, making the structure compact, with high integration, reducing costs and improving power generation efficiency. The speed increaser 12 power generation assembly is arranged at the top of the wind turbine, directly connected to the wind turbine main shaft 11, eliminating the cost of a very long transmission shaft and improving power generation efficiency. At the same time, the speed increaser 12, the generator 13, etc. are integrated into a part of the wind turbine tower column, exposed in the wind farm, relying on the wind speed in the wind farm for cooling, eliminating the forced cooling mechanism and external nacelle, reducing costs and improving cooling efficiency.

[0053] Please continue to refer to Figure 1 、 Figure 2 and Figure 3 to understand more structural details of the vertical axis wind turbine structure. In this embodiment, the vertical axis wind turbine structure includes three blades 15. The wind turbine main shaft 11 is cylindrical. The three blades 15 are circumferentially evenly distributed on the wind turbine main shaft 11, and the height direction of the blade 15 is the same as the height direction of the wind turbine main shaft 11.

[0054] As can be seen from Figure 1 , in an alternative embodiment, the vertical axis wind turbine structure further includes an upper connecting rod 510, a middle connecting rod 520 and a lower connecting rod 530; along the height direction of the wind turbine main shaft 11, the upper connecting rod 510, the middle connecting rod 520 and the lower connecting rod 530 are sequentially arranged; and the upper part of the blade 15 is connected to the wind turbine main shaft 11 through the upper connecting rod 510, the middle part of the blade 15 is connected to the wind turbine main shaft 11 through the middle connecting rod 520, and the lower part of the blade 15 is connected to the wind turbine main shaft 11 through the lower connecting rod 530. In this way, it can ensure that all parts in the height direction of the blade 15 can be stably connected to the wind turbine main shaft 11. Further, one end of the upper connecting rod 510 away from the blade 15 is arranged on the connecting hub 16, and the connecting hub 16 is arranged at the top of the wind turbine main shaft 11.

[0055] As can be seen from FIG. 2 and Figure 3 It can also be seen that in an alternative embodiment, the vertical axis wind turbine structure further includes a main shaft flange 100, and the bottom of the wind wheel main shaft 11 is detachably connected to the top of the speed increaser 12 through the main shaft flange 100. This facilitates the loading and unloading and maintenance of the speed increaser 12 and the wind wheel main shaft 11. Optionally, one ends of the middle connecting rod 520 and the lower connecting rod 530 away from the blade 15 are both arranged on the main shaft flange 100.

[0056] In an alternative embodiment, the vertical axis wind turbine structure further includes an input flange 200; the top of the input flange 200 is detachably connected to the main shaft flange 100, and the bottom of the input flange 200 is connected to the top of the speed increaser 12. Optionally, the top of the input flange 200 and the main shaft flange 100 are detachably connected by a first bolt 610.

[0057] In an alternative embodiment, the input flange 200 and the speed increaser 12 are connected by a key. The key connection can well maintain power transmission and can also avoid damage to the low-speed input shaft 12a of the speed increaser 12. The input flange 200 is used for the input of the total load of the speed increaser 12 assembly, and the flat key 220 is used for transmitting the load.

[0058] In this embodiment, the bottom of the input flange 200 has a connection hole 210, and the top of the low-speed input shaft 12a of the speed increaser 12 is fixedly arranged in the connection hole 210 through a flat key 220. Such an arrangement can not only reduce the volume of the main shaft flange 100 and the input flange 200, but also ensure the stable connection between the wind wheel main shaft 11 and the speed increaser 12.

[0059] In an alternative embodiment, the speed increaser 12 and the generator 13 are detachably connected. This is beneficial to the disassembly and maintenance of the speed increaser 12 and the generator 13. Specifically, the bottom of the speed increaser 12 and the top of the generator 13 are detachably connected by a second bolt 620.

[0060] In an alternative embodiment, the vertical axis wind turbine structure further includes a base flange 300, the bottom of the generator 13 is connected to the top of the base flange 300, and the bottom of the base flange 300 is detachably connected to the top of the tower barrel 14. This is beneficial to the disassembly and maintenance of the generator 13, the base flange 300 and the tower barrel 14. Specifically, in this embodiment, the bottom of the base flange 300 and the top of the tower barrel 14 are detachably connected by a third bolt 630.

[0061] In an alternative embodiment, the vertical axis wind turbine structure further includes a bottom connection flange 400; the bottom of the tower barrel 14 is arranged on the installation base through the bottom connection flange 400.

[0062] From Figure 3 and Figure 4It can also be seen that in an alternative embodiment, the speed increaser 12 includes a housing 700, a low-speed input shaft 12a, a high-speed output shaft 12b, and a planetary gear mechanism 820; the planetary gear mechanism includes a planet carrier 821, a sun gear 822, a ring gear 823, and a plurality of planet gears 824; the wind turbine main shaft is fixedly connected to the main shaft flange 100, the main shaft flange 100 is fixedly connected to the input flange 200, and the input flange 200 is connected to the low-speed input shaft 12a; the low-speed input shaft 12a is fixedly connected to the planet carrier 821, each planet gear 824 is rotatably arranged on the planet carrier 821 through a corresponding planet shaft 825, the ring gear 823 is fixedly arranged in the housing 700, and a plurality of planet gears 824 are all meshed with the sun gear 822; the sun gear 822 is fixedly connected to the high-speed output shaft 12b; when the wind turbine main shaft 11 rotates, it drives the main shaft flange 100, the input flange 200, the low-speed input shaft 12a, the planet carrier 821, the sun gear 822, and the high-speed output shaft 12b to rotate in sequence, so as to achieve the speed increasing operation; the sun gear 822 can be connected to the motor shaft of the generator 13.

[0063] Such a speed increaser 12 adopts an NGW planetary structure, thereby obtaining higher transmission efficiency, fewer parts, more compact axial dimensions, lower manufacturing cost, higher reliability, and great market competitiveness.

[0064] From Figure 4 It can also be seen that in an alternative embodiment, a first channel 711 is provided at the top of the housing 700, and the first channel 711 penetrates through the top of the housing 700 to form a first opening 712; the bottom of the housing 700 has a boss 720, the boss 720 is provided with a second channel 721, and the second channel 721 penetrates through the top surface of the boss 720 to form a second opening 722; a receiving space 725 capable of accommodating lubricating fluid is formed by enclosing the outer peripheral wall of the boss 720 and the inner wall of the housing 700;

[0065] The low-speed input shaft 12a is hermetically connected to the first channel 711 through an upper double-layer skeleton oil seal 713, and a dust-proof disc 714 is provided on the first opening 712; the high-speed output shaft 12b is hermetically arranged in the second channel 721 through a lower double-layer skeleton oil seal 723; an oil slinger 724 is sleeved on the lower end of the high-speed output shaft 12b; the oil slinger 724 is located above the second opening 722; along the axial direction of the high-speed output shaft 12b, the projection of the second opening 722 is entirely located within the oil slinger 724.

[0066] In this way, the upper double-layer skeleton oil seal 713 and the dust-proof disc 714 can ensure good sealing and protection for the end of the low-speed input shaft 12a of the speed increasing part; the lower double-layer skeleton oil seal 723 can ensure good sealing for the high-speed output shaft 12b; and the high-speed output shaft 12b can drive the oil slinger 724 to rotate, thereby preventing the oil from entering the lower double-layer skeleton oil seal 723 due to gravity, which may cause damage to the oil seal and reduction of its service life.

[0067] In a second aspect, the present utility model provides a micro-wind power generation device, which includes the vertical axis wind turbine structure according to any one of the foregoing embodiments.

[0068] In summary, the embodiments of the present utility model provide a vertical axis wind turbine structure and a micro-wind power generation device, which have at least the following advantages:

[0069] 1. The speed increasing box 12 power generation assembly is used as a part of the wind turbine tower column and is exposed in the wind farm, relying on the wind speed in the wind farm for cooling, eliminating the forced cooling mechanism and reducing costs; the greater the power generation, the higher the external wind speed, and the better the heat dissipation capacity.

[0070] 2. The speed increasing box 12 power generation assembly is arranged at the top of the wind turbine and is directly connected to the wind wheel main shaft 11. Compared with the traditional structure in which the speed increasing box 12 power generation assembly is arranged on the ground, the cost of a very long transmission shaft is eliminated, and the power generation efficiency can be significantly improved at the same time.

[0071] 3. The speed increasing box 12 power generation assembly is integrated with the wind wheel main shaft 11 and used as the tower column support, eliminating the bearing seat for supporting the wind wheel main shaft 11, the external nacelle, the transmission shaft and the coupling, etc., making the structure compact and highly integrated, greatly reducing costs and improving power generation efficiency.

[0072] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A vertical axis fan structure, characterized in that, Comprising: A wind turbine main shaft (11), a speed increaser (12), a generator (13), a tower barrel (14), and at least one blade (15); The blades (15) are circumferentially arranged on the wind turbine main shaft (11), and the blades (15) extend along the height direction of the wind turbine main shaft (11); The top of the wind turbine main shaft (11) is connected to the top of the speed increaser (12), the bottom of the speed increaser (12) is connected to the top of the generator (13), and the bottom of the generator (13) is connected to the top of the tower barrel (14).

2. The vertical axis wind turbine structure according to claim 1, characterized in that: It further includes a main shaft flange (100), and the bottom of the wind turbine main shaft (11) is detachably connected to the top of the speed increaser (12) through the main shaft flange (100).

3. The vertical axis wind turbine structure according to claim 2, characterized in that: It further includes an input flange (200); The top of the input flange (200) is detachably connected to the main shaft flange (100), and the bottom of the input flange (200) is connected to the top of the speed increaser (12).

4. The vertical axis wind turbine structure according to claim 3, characterized in that: The input flange (200) is connected to the speed increaser (12) through a key body.

5. The vertical axis wind turbine structure according to claim 4, characterized in that: The bottom of the input flange (200) has a connection hole (210), and the top of the low-speed input shaft (12a) of the speed increaser (12) is fixedly arranged in the connection hole (210) through a flat key (220).

6. The vertical axis wind turbine structure according to claim 1, characterized in that: It further includes a base flange (300), the bottom of the generator (13) is connected to the top of the base flange (300), and the bottom of the base flange (300) is detachably connected to the top of the tower barrel (14).

7. The vertical axis wind turbine structure according to claim 1, characterized in that: It further includes a bottom connection flange (400); The bottom of the tower barrel (14) is arranged on the installation base through the bottom connection flange (400).

8. The vertical axis wind turbine structure according to claim 1, characterized in that: It further includes an upper connecting rod (510), a middle connecting rod (520), and a lower connecting rod (530); Along the height direction of the wind turbine main shaft (11), the upper connecting rod (510), the middle connecting rod (520), and the lower connecting rod (530) are arranged in sequence; and the upper part of the blade (15) is connected to the wind turbine main shaft (11) through the upper connecting rod (510), the middle part of the blade (15) is connected to the wind turbine main shaft (11) through the middle connecting rod (520), and the lower part of the blade (15) is connected to the wind turbine main shaft (11) through the lower connecting rod (530).

9. The vertical axis wind turbine structure according to claim 1, characterized in that: The speed increasing gearbox (12) includes a box body (700), a low-speed input shaft (12a), a high-speed output shaft (12b), and a planetary gear mechanism (820); the planetary gear mechanism includes a planetary carrier (821), a sun gear (822), a ring gear (823), and a plurality of planet gears (824); The wind turbine main shaft can be connected to the low-speed input shaft (12a), the low-speed input shaft (12a) is fixedly connected to the planetary carrier (821), each planet gear (824) is rotatably arranged on the planetary carrier (821) through a corresponding planet shaft (825), the ring gear (823) is fixedly arranged in the box body (700), and a plurality of planet gears (824) are all meshed with the sun gear (822); the sun gear (822) is fixedly connected to the high-speed output shaft (12b); When the wind turbine main shaft (11) rotates, it drives the low-speed input shaft (12a), the planetary carrier (821), the sun gear (822), and the high-speed output shaft (12b) to rotate in sequence, so as to realize the speed increasing operation; the sun gear (822) can be connected to the motor shaft of the generator (13).

10. The vertical axis wind turbine structure according to claim 9, wherein: A first channel (711) is provided at the top of the box body (700), and the first channel (711) penetrates through the top of the box body (700) to form a first opening (712); the bottom of the box body (700) has a boss (720), and the boss (720) is provided with a second channel (721), and the second channel (721) penetrates through the top surface of the boss (720) to form a second opening (722); The low-speed input shaft (12a) is hermetically connected to the first channel (711) through an upper double-layer skeleton oil seal (713), and a dust-proof disc (714) is arranged on the first opening (712); The high-speed output shaft (12b) is hermetically arranged in the second channel (721) through a lower double-layer skeleton oil seal (723); a slinger (724) is sleeved on the lower end of the high-speed output shaft (12b); the slinger (724) is located above the second opening (722); along the axial direction of the high-speed output shaft (12b), the projection of the second opening (722) is entirely located within the slinger (724).

Images