Distributed oversize wind power generation equipment speed change device

Abstract

The invention discloses a distributed oversize wind power generation equipment speed change device which comprises a machine body, a main shaft is rotationally installed in the middle of the machine body, a plurality of generators are fixedly installed on the machine body, the axes of the generators are parallel to the main shaft, and the generators are annularly distributed along the axis of the main shaft. A transmission assembly is arranged between the generator main shaft of each generator and the main shaft; the motor is simple in overall structure, convenient to use, light in overall weight, large in power, high in efficiency, low in manufacturing cost, long in service life, simple in structure and reliable to use.

Description

Technical Field

[0001] This invention belongs to the field of generator technology, specifically, it relates to a speed change device for distributed ultra-large wind power generation equipment. Background Technology

[0002] Currently, there are two main types of speed increasers for common wind turbines: multi-stage gear speed increasers and planetary gear speed increasers. Both types of speed increasers have the following drawbacks: firstly, they have complex structures; secondly, they require high machining precision and operate under harsh conditions; and thirdly, it is extremely difficult to achieve a single unit capacity of 20MW or more. Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide a distributed ultra-large wind power generation equipment speed change device. The device has a simple overall structure, is easy to use, is lightweight, has high power, high efficiency, low cost, long service life, and reliable operation.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A distributed ultra-large wind power generation equipment speed change device includes a body, a main shaft is rotatably mounted in the middle of the body, and multiple generators are fixedly mounted on the body. The axes of the generators are arranged parallel to the main shaft, and the multiple generators are arranged in a ring along the axis of the main shaft. A transmission component is provided between the generator main shafts of each generator.

[0005] The following are further optimizations of the above technical solution by the present invention: The machine body includes an annular body, and a first machine body end cap and a second machine body end cap are respectively sealed and installed on both sides of the annular body. Lubricating oil is injected into the sealed oil cavity inside the machine body.

[0006] Further optimization: The main shaft is rotatably connected to the corresponding first and second end caps of the machine body via first bearings at its two ends. One end of the main shaft passes through the mounting hole on the corresponding first end cap and extends to the outside. Sealing components are respectively provided on the first and second end caps near the main shaft.

[0007] Further optimization: The sealing assembly includes a spindle sealing ring fixedly installed on the end cover of the first machine body near the spindle position. The spindle sealing ring is sleeved on the spindle, and a spindle oil seal is installed at the connection between the spindle sealing ring and the spindle.

[0008] Further optimization: The sealing assembly also includes a spindle end cover, which is fixedly installed on the second body end cover and near the mounting hole. The spindle end cover is used to seal the mounting hole on the second body end cover.

[0009] Further optimization: The transmission component includes a large gear disposed inside the machine body, the large gear being sleeved on the main shaft, and the large gear and the main shaft being connected by a connecting key.

[0010] Further optimization: Multiple drive shafts are arranged outside the large gear inside the machine body. The multiple drive shafts are arranged in a ring and spaced apart along the central axis of the large gear, and the axis of the drive shafts is arranged parallel to the axis of the large gear.

[0011] Further optimization: The two ends of the drive shaft are rotatably connected to the corresponding first and second machine body end covers via second bearings, and the drive shaft is connected to the generator main shaft of the corresponding generator via couplings.

[0012] Further optimization: A small gear is sleeved on the drive shaft, the small gear is connected to the corresponding drive shaft, and the small gear is meshed with the large gear.

[0013] Further optimization: The end of the drive shaft away from the generator passes through the corresponding first body end cover and extends to the outside. Multiple brakes are provided on the outside of the first body end cover, and one end of the drive shaft is connected to the corresponding brake.

[0014] The present invention adopts the above-mentioned technical solution, which is ingenious in conception and reasonable in structure. The speed change device of the distributed extra-large wind power generation equipment is lightweight, has high power, high efficiency, low cost, long service life, simple structure, and reliable use. Moreover, it has a large number of generators. When multiple generators work synchronously, the power generation can be increased and the use effect can be improved.

[0015] Furthermore, each generator operates independently, so if one generator fails, it will not affect the operation of other generators. This makes it convenient to use and maintain, and can reduce operating costs and improve performance.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of the present invention; Figure 2 This is a partial sectional view of the overall structure in Embodiment 1 of the present invention; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the overall structure in Embodiment 2 of the present invention; Figure 6 for Figure 5 A magnified view of a section at point C; Figure 7 for Figure 5 A magnified view of a section at point D; Figure 8 This is a schematic diagram of the structure in use in Embodiment 2 of the present invention.

[0018] In the diagram: 1-Generator; 2-Generator main shaft; 3-Coupling; 4-Pinary gear; 5-Major gear; 6-Main body; 7-First bearing; 8-Pinary gear end cover; 9-First main body end cover; 10-Connecting key; 11-Main shaft sealing ring; 12-Main shaft oil seal; 13-Main shaft; 14-Main shaft end cover; 15-Lubricating oil; 16-Brake; 17-Second main body end cover; 18-Drive shaft; 19-Second bearing; 20-Wind turbine main shaft; 21-Generator base. Detailed Implementation

[0019] like Figure 1-4 As shown, a distributed ultra-large wind power generation equipment speed change device includes a body 6, a main shaft 13 is rotatably mounted in the middle of the body 6, and multiple generators 1 are fixedly mounted on the body 6. The axes of the generators 1 are arranged parallel to the main shaft 13, and the multiple generators 1 are arranged in a ring along the axis of the main shaft 13. A transmission component is provided between the generator main shaft 2 and the main shaft 13 of each generator 1.

[0020] The body 6 includes an annular main body, and a first body end cover 9 and a second body end cover 17 are respectively sealed and installed on both sides of the annular main body.

[0021] The first end cap 9 and the second end cap 17 are used to seal the inner cavity of the body 6, so that a sealed oil cavity is formed inside the body 6.

[0022] The sealed oil chamber inside the body 6 is filled with lubricating oil 15, and the transmission component works within the lubricating oil 15 to improve the performance.

[0023] The plurality of generators 1 are mounted on the corresponding second end cover 17 of the body 6, and the plurality of generators 1 are fixedly connected to the second end cover 17.

[0024] The first end cover 9 and the second end cover 17 of the machine body are coaxially provided with mounting holes near the main shaft 13. The main shaft 13 is respectively fitted with a plurality of first bearings 7, and the first bearings 7 are respectively installed in the corresponding mounting holes on the first end cover 9 and the second end cover 17 of the machine body.

[0025] This design allows for a rotatable connection between the main shaft 13 and the first end cover 9 and the second end cover 17 of the machine body via the first bearing 7, and the first bearing 7 can also be used to support the rotation of the main shaft 13, making it convenient to use.

[0026] One end of the main shaft 13 passes through the mounting hole on the corresponding first machine body end cover 9 and extends to the outside.

[0027] Sealing components are respectively provided on the first machine body end cover 9 and the second machine body end cover 17 near the main shaft 13. The sealing components are used to seal the connection between the main shaft 13 and the first machine body end cover 9 and the second machine body end cover 17 to prevent the lubricating oil 15 from leaking at this location.

[0028] The sealing assembly includes a spindle sealing ring 11 fixedly installed on the first machine body end cover 9 near the spindle 13. The spindle sealing ring 11 is sleeved on the spindle 13, and a spindle oil seal 12 is installed at the connection between the spindle sealing ring 11 and the spindle 13.

[0029] This design allows the connection between the spindle 13 and the first machine body end cover 9 to be sealed by the spindle sealing ring 11 and the spindle oil seal 12, which is convenient to use and prevents the lubricating oil 15 inside the machine body 6 from leaking at this point.

[0030] The sealing assembly also includes a spindle end cover 14, which is fixedly installed on the second body end cover 17 and near the mounting hole. The spindle end cover 14 is used to seal the mounting hole on the second body end cover 17.

[0031] This design allows the spindle end cover 14 to seal the mounting holes on the second machine body end cover 17, preventing the lubricating oil 15 inside the machine body 6 from leaking out at this location.

[0032] A connecting flange is integrally connected to the outer end of the main shaft 13, and the main shaft 13 is connected to the drive shaft of the external wind turbine through the connecting flange.

[0033] The transmission assembly includes a large gear 5 disposed inside the body 6. The large gear 5 is sleeved on the main shaft 13, and the large gear 5 and the main shaft 13 are connected by a connecting key 10.

[0034] This design allows for a transmission connection between the large gear 5 and the main shaft 13 via the connecting key 10. The rotation of the main shaft 13 drives the large gear 5 to rotate synchronously, making it convenient to use.

[0035] Multiple drive shafts 18 are arranged inside the body 6 outside the large gear 5. The multiple drive shafts 18 are arranged in a ring and spaced apart along the central axis of the large gear 5. The axis of the drive shafts 18 is parallel to the axis of the large gear 5.

[0036] In this embodiment, the number of drive shafts 18 is the same as the number of generators 1, and the drive shafts 18 are coaxially arranged with the generator main shaft 2 of the corresponding generator 1.

[0037] In this embodiment, the drive shaft 18 is connected to the generator main shaft 2 of the corresponding generator 1 via a coupling 3.

[0038] The two ends of the drive shaft 18 are rotatably connected to the corresponding first body end cover 9 and second body end cover 17 via the second bearing 19.

[0039] This design allows the two ends of the drive shaft 18 to be rotatably connected to the corresponding first end cover 9 and second end cover 17 of the machine body via the second bearing 19, and the second bearing 19 can also be used to support the drive shaft 18 to rotate, making it convenient to use.

[0040] A small gear 4 is fitted on the drive shaft 18. The small gear 4 is connected to the corresponding drive shaft 18 for transmission. The small gear 4 is also connected to the large gear 5 for meshing.

[0041] The rotation of the large gear 5 drives the rotation of each small gear 4, which in turn drives the transmission shaft 18 to rotate. The rotation of the transmission shaft 18, through the coupling 3, drives the generator main shaft 2 to rotate, and the rotation of the generator main shaft 2 drives the generator 1 to work.

[0042] Therefore, the rotation of the main shaft 13 can synchronously drive multiple generators 1 to work synchronously through the meshing transmission of the large gear 5 and the small gear 4, thereby realizing power generation. Moreover, there are many generators 1. When multiple generators 1 work synchronously, the power generation can be increased and the usage effect can be improved.

[0043] Furthermore, each generator 1 operates independently. When one generator 1 is damaged, it does not affect the operation of other generators 1, making it convenient to use and maintain, and reducing operating costs while improving performance.

[0044] The end of the drive shaft 18 away from the generator 1 passes through the corresponding first body end cover 9 and extends to the outside.

[0045] A pinion end cover 8 is fixedly installed on the first body end cover 9 near each transmission shaft 18, and the pinion end cover 8 is sleeved on the transmission shaft 18.

[0046] The pinion end cover 8 is used to seal the connection between the drive shaft 18 and the first body end cover 9 to prevent lubricating oil 15 from leaking at this location.

[0047] Multiple brakes 16 are provided on the outer side of the first body end cover 9. The multiple brakes 16 are arranged corresponding to each transmission shaft 18, and one end of the transmission shaft 18 is connected to the corresponding brake 16.

[0048] With this design, when braking is required, the multiple brakes 16 work synchronously. At this time, the brakes 16 are used to brake the transmission shaft 18, thereby braking the pinion 4. The pinion 4 meshes with the large gear 5, thereby braking the large gear 5, thus braking the main shaft 13, and thus achieving the purpose of braking.

[0049] It can be seen that when the wind turbine drives the main shaft 13 to rotate, the large gear 5 fixed on the main shaft 13 rotates. The rotation of the large gear 5 drives the small gear 4 meshing with it to rotate in the opposite direction. The rotation of the small gear 4 drives the generator 1 to rotate and generate electricity through the transmission shaft 18 and the coupling 3.

[0050] When braking is required, multiple brakes 16 can work synchronously to brake the drive shaft 18, and through transmission, the entire speed change device of the distributed extra-large wind power generation equipment can be braked.

[0051] The large gear 5 and the small gear 4 are paired in a herringbone pattern.

[0052] The gear ratio between the large gear 5 and the small gear 4 is selected to be between 1:20 and 60.

[0053] The large gear 5, the body 6, the first body end cover 9, and the second body end cover 17 are all made of composite materials of carbon fiber and steel.

[0054] This design enables the distributed, extra-large wind power generation equipment to have a lightweight, high-power, high-efficiency, low-cost, long-life, simple structure, and reliable operation.

[0055] In use, the speed change device of this distributed extra-large wind power generation equipment is installed on the wind turbine, and the main shaft 13 is connected to the wind turbine drive.

[0056] At this time, the wind turbine outputs power to drive the main shaft 13 to rotate. The rotation of the main shaft 13 drives the large gear 5 fixed on the main shaft 13 to rotate. The rotation of the large gear 5 drives the small gears 4 meshing with it to rotate in the opposite direction. The rotation of the small gears 4 drives the generator 1 to rotate to generate electricity through the transmission shaft 18 and the coupling 3.

[0057] When braking is required, multiple brakes 16 can work synchronously to brake the drive shaft 18, and through transmission, the entire speed change device of the distributed extra-large wind power generation equipment can be braked.

[0058] Furthermore, there are many generators 1. When multiple generators 1 work simultaneously, the power generation can be increased, thus improving the efficiency of use.

[0059] Furthermore, each generator 1 operates independently. When one generator 1 is damaged, it does not affect the operation of other generators 1, making it convenient to use and maintain, and reducing operating costs while improving performance.

[0060] Example 2, as Figure 5-8 As shown, the speed change device of this distributed ultra-large wind power generation equipment can also adopt... Figure 5-8 As shown in the structure, the first end cover 9 and the second end cover 17 of the machine body are coaxially provided with mounting holes near the main shaft 13. The main shaft 13 is respectively fitted with a plurality of first bearings 7, and the first bearings 7 are respectively installed in the corresponding mounting holes on the first end cover 9 and the second end cover 17 of the machine body.

[0061] The two ends of the main shaft 13 pass through the mounting holes on the corresponding first end cover 9 and second end cover 17 of the machine body, and extend to the outside.

[0062] The sealing assembly includes two spindle sealing rings 11, which are respectively installed on the first machine body end cover 9 and the second machine body end cover 17 at positions close to the spindle 13, and are sleeved on the spindle 13.

[0063] The spindle sealing ring 11 and the spindle 13 are respectively equipped with spindle oil seals 12.

[0064] This design allows the connection between the spindle 13 and the first end cover 9 and the second end cover 17 of the machine body to be sealed through the spindle sealing ring 11 and the spindle oil seal 12, which is convenient to use and prevents the lubricating oil 15 in the machine body 6 from leaking at this point.

[0065] The spindle 13 has a central hole coaxially formed in the middle, and an internal spline is formed on the inner surface of the central hole.

[0066] In this embodiment 2, the large gear 5 is sleeved on the main shaft 13, and the large gear 5 and the main shaft 13 are connected by a connecting key 10 or a spline drive. The rotation of the main shaft 13 drives the large gear 5 to rotate through the connecting key 10 or the spline.

[0067] In this embodiment 2, the pinion 4 is a shaft gear, and the overall structure of the shaft gear includes a gear, with a support shaft integrally connected to both sides of the gear.

[0068] The two ends of the pinion 4 support shaft pass through the corresponding first body end cover 9 and second body end cover 17, respectively, and the two ends of the pinion 4 support shaft are respectively provided with conical mating surfaces.

[0069] A second bearing 19 is provided at the connection between the support shaft of the pinion 4 and the first end cover 9 and the second end cover 17 of the machine body. The second bearing 19 is used to support the pinion 4 to rotate.

[0070] A pinion end cover 8 is fixedly installed on the first body end cover 9 and the second body end cover 17 at a position close to the support shaft of each pinion 4. The pinion end cover 8 is sleeved on the support shaft of the pinion 4.

[0071] The pinion end cover 8 is used to seal the connection between the support shaft of the pinion 4 and the first body end cover 9 and the second body end cover 17, so as to prevent the lubricating oil 15 from leaking at this point.

[0072] The pinion 4 is connected to the input shaft of the generator 1 via a tapered mating surface near the support shaft of the generator 1.

[0073] The pinion 4 is connected to the brake 16 via a conical mating surface on its support shaft.

[0074] This design, through the engagement of the conical mating surfaces, improves the installation accuracy between the support shaft of the pinion 4 and the generator 1 and brake 16, thereby enhancing the performance.

[0075] In addition to this embodiment 2, multiple generators 1 can be installed on the side surfaces of the first body end cover 9 and the second body end cover 17 that are far apart from each other. The multiple generators 1 are coaxially arranged with the corresponding pinion 4, and the two support shafts of the pinion 4 are respectively connected to the corresponding generators 1 for transmission.

[0076] When using, such as Figure 8 As shown, the distributed ultra-large wind power generation equipment speed change device can also be multiple sets, and multiple sets of distributed ultra-large wind power generation equipment speed change devices are respectively installed on the same wind turbine main shaft 20.

[0077] The main shaft 13 of each distributed extra-large wind power generation equipment speed change device is respectively connected to the wind turbine main shaft 20, and the main shaft 13 and the wind turbine main shaft 20 are connected by spline joint.

[0078] The wind turbine main shaft 20 is equipped with a power generation device base 21 for supporting the rotation of the wind turbine main shaft 20. The power generation device base 21 is used to support the rotation of the wind turbine main shaft 20 for convenient use.

[0079] For those skilled in the art, any changes, modifications, substitutions, and variations made to the embodiments without departing from the principles and spirit of the present invention, based on the teachings of the present invention, still fall within the protection scope of the present invention.

Claims

1. A speed-changing device for a distributed ultra-large wind power generation equipment, comprising a body (6), characterized in that: A main shaft (13) is rotatably mounted in the middle of the body (6). Multiple generators (1) are fixedly mounted on the body (6). The axes of the generators (1) are arranged parallel to the main shaft (13), and the multiple generators (1) are arranged in a ring along the axis of the main shaft (13). A transmission assembly is provided between the generator main shaft (2) of each generator (1) and the main shaft (13).

2. The speed change device for a distributed ultra-large wind power generation equipment according to claim 1, characterized in that: The body (6) includes an annular body, and a first body end cap (9) and a second body end cap (17) are respectively sealed and installed on the two sides of the annular body. Lubricating oil (15) is injected into the sealed oil cavity inside the body (6).

3. The speed change device for a distributed ultra-large wind power generation equipment according to claim 2, characterized in that: The main shaft (13) is rotatably connected to the corresponding first machine body end cover (9) and second machine body end cover (17) near its two ends via the first bearing (7). One end of the main shaft (13) passes through the mounting hole on the corresponding first machine body end cover (9) and extends to the outside. Sealing components are respectively provided on the first machine body end cover (9) and the second machine body end cover (17) near the main shaft (13).

4. The speed change device for a distributed ultra-large wind power generation equipment according to claim 3, characterized in that: The sealing assembly includes a spindle sealing ring (11) fixedly installed on the first machine body end cover (9) near the spindle (13). The spindle sealing ring (11) is sleeved on the spindle (13), and a spindle oil seal (12) is installed at the connection between the spindle sealing ring (11) and the spindle (13).

5. The speed change device for a distributed ultra-large wind power generation equipment according to claim 4, characterized in that: The sealing assembly also includes a spindle end cover (14), which is fixedly installed on the second body end cover (17) and near the mounting hole. The spindle end cover (14) is used to seal the mounting hole on the second body end cover (17).

6. The speed change device for a distributed ultra-large wind power generation equipment according to claim 5, characterized in that: The transmission assembly includes a large gear (5) installed inside the machine body (6), the large gear (5) being sleeved on the main shaft (13), and the large gear (5) and the main shaft (13) being connected by a connecting key (10).

7. The speed change device for a distributed ultra-large wind power generation equipment according to claim 6, characterized in that: Multiple drive shafts (18) are arranged inside the body (6) outside the large gear (5). The multiple drive shafts (18) are arranged in a ring and spaced apart along the central axis of the large gear (5). The axis of the drive shafts (18) is arranged parallel to the axis of the large gear (5).

8. The speed change device for a distributed ultra-large wind power generation equipment according to claim 7, characterized in that: The two ends of the drive shaft (18) are rotatably connected to the corresponding first body end cover (9) and second body end cover (17) through the second bearing (19), respectively. The drive shaft (18) is connected to the generator main shaft (2) of the corresponding generator (1) through the coupling (3).

9. A speed-changing device for a distributed ultra-large wind power generation equipment according to claim 8, characterized in that: A small gear (4) is fitted on the drive shaft (18), and the small gear (4) is connected to the corresponding drive shaft (18) for transmission. The small gear (4) is connected to the large gear (5) for meshing.

10. A speed-changing device for a distributed ultra-large wind power generation equipment according to claim 9, characterized in that: The end of the drive shaft (18) away from the generator (1) passes through the corresponding first body end cover (9) and extends to the outside. Multiple brakes (16) are provided on the outside of the first body end cover (9). One end of the drive shaft (18) is connected to the corresponding brake (16) in a transmission connection.

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