Wind power speed increasing box and wind turbine

Abstract

The utility model provides a kind of wind power speed increaser and wind turbine, wind power speed increaser includes input end and first output end, input end is used to connect with wind wheel, first output end is used to connect with pumping device;The power of wind wheel can reach first output end via input end, and pumping device is driven to work;Wherein, the axis of input end and the axis of output end are intersected and set up.This application is by the axis of wind power speed increaser input end and the axis of first output end intersected and set up, to drive pump body assembly to complete the circulation of lubricating liquid in wind power speed increaser in the case where there is no parallel level and axial space is limited, save the axial space of wind power speed increaser, while, improve the reliability of wind power speed increaser operation.

Description

Technical Field

[0001] This utility model relates to the field of wind power speed increasers, and particularly to a wind power speed increaser and a wind turbine generator set. Background Technology

[0002] As the global wind power industry develops towards higher power and deeper sea areas, offshore wind turbines generally adopt a "fully integrated transmission chain" structure, which connects the wind turbine, wind power speed increaser and generator in a compact series along the axial direction to shorten the nacelle length.

[0003] However, this also resulted in the pump body assembly, which originally relied on the parallel stage large gear drive, losing its installation space, and ultimately affecting the lubrication of the wind turbine speed increaser. Utility Model Content

[0004] The purpose of this utility model is to provide a wind power speed increaser and a wind turbine, which aims to solve the problem that the pump components in the wind turbine cannot be arranged in the related technology.

[0005] To solve the above-mentioned technical problems, in a first aspect, an embodiment of the present invention provides a wind power speed increaser including an input end and a first output end, wherein the input end is used to connect to a wind turbine, and the first output end is used to connect to a pumping device; the power of the wind turbine can reach the first output end through the input end and drive the pumping device to work. The axis of the input terminal is intersecting the axis of the output terminal.

[0006] Optionally, the wind power speed increaser includes a transmission assembly, which includes a first planetary carrier and a first bevel gear, wherein the first bevel gear is connected to the outer peripheral surface of the first planetary carrier in a transmission connection. The first planetary carrier is connected to the input end in a transmission manner, and the first output end is located on the first bevel gear.

[0007] Optionally, the transmission assembly further includes a spur gear and a second bevel gear, the spur gear being drivenly connected to the outer edge of the first planetary carrier; The second bevel gear is connected to the spur gear and meshes with the first bevel gear.

[0008] Optionally, the spur gear and the second bevel gear are arranged at intervals along the axial direction of the spur gear.

[0009] Optionally, the outer edge of the first planetary carrier is provided with a toothed structure, which meshes with the spur gear.

[0010] Optionally, the wind power speed increaser also includes a bearing, the outer ring of which is used for fixed connection with the pumping device; The inner ring of the bearing is connected to the first planetary carrier.

[0011] Optionally, the wind power speed increaser also includes a power input component, which includes a second planetary carrier and an output shaft connected to each other. The input terminal is located on the second planetary carrier; the output shaft is connected to the first planetary carrier.

[0012] Optionally, the wind power speed increaser also includes a second output terminal, which is used to connect to the engine; The axis of the second output terminal and the axis of the first output terminal are two intersecting axes.

[0013] Optionally, the wind power speed increaser includes a transmission assembly, which includes a first planetary carrier and a drive shaft connected to each other, and the second output end is located on the drive shaft.

[0014] Secondly, this application also provides a wind turbine generator set, the wind turbine generator set including a wind power speed increaser, the wind power speed increaser including: a power input component, a transmission component and a pump body component; the power input component is used to connect to the wind turbine rotor, the power input component has an output shaft; The pump body assembly has a power input shaft; the transmission assembly is connected between the output shaft and the power input shaft, and the transmission assembly is used to transmit the power of the output shaft to the power input shaft to drive the pump body assembly to work; The axis of the output shaft and the axis of the power input shaft are two intersecting axes.

[0015] This application sets the axis of the input end of the wind turbine gearbox to intersect with the axis of the first output end, thereby driving the pump assembly to complete the circulation of lubricating fluid in the wind turbine gearbox in the absence of a parallel stage and with limited axial space. This saves axial space in the wind turbine gearbox and improves the reliability of the wind turbine gearbox operation. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is an assembly diagram of the wind power speed increaser and pumping device provided in this application; Figure 2 for Figure 1 A three-dimensional structural diagram of the central transmission structure; Figure 3 for Figure 2 A sectional view.

[0018] Explanation of reference numerals in the accompanying drawings of this utility model: 100-Wind power speed increaser; 1-Transmission assembly, 11-First planetary carrier, 111-Third mounting hole, 112-Tooth structure, 113-Fourth mounting hole, 12-First bevel gear, 13-Spur gear, 14-Second bevel gear, 15-Connecting shaft, 16-Transmission shaft; 2-Power input assembly, 21-Second planetary carrier, 211-First mounting hole, 212-Second mounting hole, 22-Output shaft; 3-Input terminal, 4-First output terminal, 5-Second output terminal, 6-Power input shaft.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This application proposes a wind turbine generator, which includes a tower and a nacelle. The tower serves as the main structural component of the wind turbine generator and is used to support and connect the various components of the wind turbine generator. The tower is composed of multiple tower units, and the length of each tower unit can be set to be the same or different. This application does not impose any restrictions on this.

[0024] The nacelle is located at the top of the tower and is used to convert wind energy into electrical energy. In some embodiments, the nacelle includes a wind turbine, a generator, a wind power speed increaser, and a pumping device. The wind turbine is rotatably mounted on the tower and can rotate under the action of wind.

[0025] The generator is connected to the wind turbine. The generator can be a permanent magnet synchronous generator, a doubly fed asynchronous generator, or an induction asynchronous generator. This application does not limit the type of generator. In some embodiments, the generator includes a stator and a rotor. The stator is used to fix the generator to the nacelle and output electrical energy. The rotor is used to connect to the wind turbine and rotate under the drive of wind to cut magnetic lines of force to generate current, thereby converting the mechanical energy of the wind turbine into electrical energy and transmitting it to the outside.

[0026] The pumping device is used to draw lubricating fluid from the oil tank and deliver it to the wind turbine gearbox or other components of the wind turbine, thereby providing lubrication, reducing friction and wear during the movement of these components, and extending their service life. The pumping device can be a gear pump, a cycloidal pump, or a blade pump; this application does not limit the type of pump.

[0027] In some embodiments, the pumping device includes a housing, blades, and a power input shaft. The housing serves as the main structural component of the pumping device, supporting and connecting the various assemblies of the pump assembly. The blades are rotatably connected within the housing, rotating to create negative pressure, thereby driving the lubricating fluid to flow within the wind turbine gearbox or other components of the wind turbine unit. The blades can be radial vane blades, fixed-angle helical blades, or variable-angle torsion blades; this application does not impose any limitations on these. One end of the power input shaft is connected to the wind turbine drive, and the other end is connected to the blades. The power input shaft receives power from the wind turbine and drives the blades to rotate, thereby causing the lubricating fluid to flow within the wind turbine gearbox or other components of the wind turbine unit.

[0028] The wind turbine gearbox has an input terminal, a first output terminal, and a second output terminal. The input terminal is connected to the wind turbine to receive its power. The first output terminal is connected to a pumping device to transmit the wind turbine's power to the pumping device, which then drives the pumping device to pump lubricating fluid to the gearbox and other equipment within the wind turbine, thus maintaining the stable operation of the wind turbine. The second output terminal is connected to a generator to convert wind power into electricity. Simultaneously, the gearbox can regulate the output torque from the wind turbine to the generator to ensure the stability of this torque, thereby ensuring the stable operation of the generator.

[0029] In related technologies, pumping devices are usually connected to the wind turbine gearbox along the axial direction of the input end. However, as the global wind power industry develops towards high power and deep-sea applications, offshore wind turbines generally adopt a "fully integrated transmission chain" structure, which means that the wind turbine, wind turbine gearbox and generator are connected in a compact series along the axial direction to shorten the nacelle length. This also results in the pump body assembly, which originally relied on parallel stage large gears for drive, losing installation space and ultimately affecting the lubrication of the wind turbine gearbox.

[0030] To address the aforementioned issues, in this application, the axis of the input end of the wind turbine gearbox intersects with the axis of the output end. This allows the pump assembly to circulate the lubricant within the wind turbine gearbox even without a parallel stage and with limited axial space, saving axial space and improving the reliability of the wind turbine gearbox operation.

[0031] The wind power speed increaser provided in this application will be described in detail below with reference to the accompanying drawings.

[0032] Please refer to Figure 1 The wind power speed increaser 100 includes a power input component 2. The input end 3 of the wind power speed increaser 100 is located on the power input component 2. The power input component 2 is connected to the main shaft of the wind turbine. The power input component 2 is used to rotate with the main shaft of the wind turbine, thereby introducing the torque generated by the rotation of the wind turbine into the wind power speed increaser 100.

[0033] In some embodiments, the power input assembly 2 includes a second planetary carrier 21 and an output shaft 22. The second planetary carrier 21 serves as a support for the various components of the power input assembly 2, providing support and connection. The second planetary carrier 21 has a first mounting hole 211 and a second mounting hole 212. The first mounting hole 211 forms the input end 3 of the wind turbine speed increaser 100. The main shaft of the wind turbine extends into the first mounting hole 211 and is fixedly connected to the second planetary carrier 21 through the first mounting hole 211. The main shaft of the wind turbine can be welded into the first mounting hole 211, snapped into the first mounting hole 211, or interference-fitted into the first mounting hole 211; this application does not impose any limitations on this. One end of the output shaft 22 is located in the second mounting hole 212, and the other end is connected to the pumping device and the engine drive. The output shaft 22 can be welded into the second mounting hole 212, snapped into the second mounting hole 212, or interference-fitted into the second mounting hole 212; this application does not impose any limitations on this. When the wind turbine rotates under the action of wind, the rotation of the wind turbine drives the second planetary carrier 21 to rotate, which in turn drives the output shaft 22 to rotate, thereby introducing the torque generated by the rotation of the wind turbine into the wind power speed increaser 100, and driving the pumping device and engine to work through the rotational power of the wind turbine.

[0034] Please refer to Figures 1 to 3 In order to realize the power transmission from the power input component 2 to the generator and the pumping device, in some embodiments, the wind turbine speed increaser 100 also includes a transmission component 1. The drive shaft 16 of the power input component 2 is connected to the transmission component 1. The first output end 4 and the second output end 5 of the wind turbine speed increaser 100 are located on the transmission component 1. The power of the wind turbine can be transmitted to the pumping device via the second planetary carrier 21, the drive shaft 16 and the first output end 4, or to the generator via the second planetary carrier 21, the drive shaft 16 and the second output end 5, thereby realizing the drive of the engine and the pumping device.

[0035] In some embodiments, the transmission assembly 1 includes a first planetary carrier 11 and a first bevel gear 12. The first planetary carrier 11 is rotatably disposed inside the wind turbine. The first planetary carrier 11 serves as a support structure for the transmission assembly 1, supporting and connecting the various component assemblies of the transmission assembly. At the same time, the first planetary carrier 11 is also used to connect with other component assemblies of the wind turbine to fix the transmission assembly 1 inside the wind turbine.

[0036] The first planetary carrier 11 can be rotatably connected to the tower of the wind turbine and also to other components of the wind turbine; this application does not limit this. In some embodiments, the wind turbine gearbox 100 also includes a bearing. The outer ring of the bearing is fixedly connected to the housing of the pumping device, and the inner ring of the bearing is connected to the first planetary carrier 11. In this way, the housing of the pumping device can be structurally reused, thereby completing the installation of the first planetary carrier 11 in the wind turbine without adding additional support components, reducing the number of parts used in the wind turbine gearbox 100, and improving the compactness of the wind turbine gearbox 100.

[0037] The first planetary carrier 11 is provided with a third mounting hole 111. One end of the output shaft 22 is connected to the second mounting hole 212, and the other end is installed in the third mounting hole 111, thereby completing the transmission connection between the first planetary carrier 11 and the output end. The output shaft 22 can be welded into the third mounting hole 111, snapped into the third mounting hole 111, or interference-fitted into the third mounting hole 111. This application does not impose any restrictions on this.

[0038] The first bevel gear 12 is connected to the power input shaft 6 of the pumping device and is also connected to the outer edge of the first planetary carrier 11 via a transmission connection. When the wind turbine rotates under the action of wind power, the rotation of the wind turbine drives the second planetary carrier 21 and the output shaft 22 to rotate. The output shaft 22 drives the first planetary carrier 11 to rotate, and the first planetary carrier 11 drives the first bevel gear 12 to rotate, thereby driving the power input shaft 6 of the pumping device to rotate, and thus driving the pumping device to move.

[0039] The transmission arrangement between the first bevel gear 12 and the outer circumference of the first planetary carrier 11 allows the axis of the first bevel gear 12 to intersect with the axis of the first planetary carrier 11. This intersection can be 30° or 60°. For example, the axis of the first bevel gear 12 is perpendicular to the axis of the first planetary carrier 11. This allows the axis of the input end 3 of the wind turbine gearbox 100 to intersect with the axis of the first output end 4, thereby driving the pump assembly to complete the circulation of lubricating fluid within the wind turbine gearbox 100 in the absence of parallel stages and with limited axial space. This saves axial space in the wind turbine gearbox 100 while improving the reliability of its operation.

[0040] There are various ways to drive the first bevel gear 12 to the outer circumferential surface of the first planetary carrier 11. In some embodiments, the transmission assembly 1 also includes a spur gear 13 and a second bevel gear 14. The spur gear 13 is driven to the outer edge of the first planetary carrier 11; the second bevel gear 14 is connected to the spur gear 13 and meshes with the first bevel gear 12. When the first planetary carrier 11 rotates under the drive of the output shaft 22, the first planetary carrier 11 drives the spur gear 13 to rotate, the spur gear 13 drives the second bevel gear 14 to rotate, the second bevel gear 14 drives the first bevel gear 12 to rotate, and thus drives the power input shaft 6 of the pumping device to rotate. This transmits the power of the wind turbine to the pumping device via the output shaft 22, the first planetary carrier 11, the spur gear 13, the second bevel gear 14, and the first bevel gear 12, thereby driving the pumping device to drive the lubricating fluid to move within the wind turbine gearbox 100 and other components of the wind turbine, improving the operational stability of the wind turbine gearbox 100.

[0041] Understandably, in other possible embodiments of this application, the first planetary carrier 11 can also be directly connected to the first bevel gear 12, thereby realizing the transmission of power between the first planetary carrier 11 and the first bevel gear 12. Compared with directly connecting the first planetary carrier 11 and the first bevel gear 12, first using the spur gear 13 to drive the connection with the outer edge of the first planetary carrier 11, and then transmitting the power of the spur gear 13 to the first bevel gear 12 through the second bevel gear 14, can effectively reduce the machining difficulty of the outer edge of the first planetary carrier 11 and the large end diameter of the first bevel gear 12, and avoid the problems of heat treatment deformation, high grinding cost and inconvenient replacement caused by directly cutting bevel teeth on the body of the first planetary carrier 11. At the same time, the spur gear 13 and the second bevel gear 14 can also form a two-stage speed-increasing path of "first external meshing to increase speed, and then bevel gear reversal" between the first planetary carrier 11 and the first bevel gear 12, so that the pumping device can obtain a high speed that meets the lubrication requirements, avoid the risk of tooth root bending and contact fatigue caused by a single-stage large speed ratio, and reduce the size and strength requirements of the planetary carrier body and the bevel gear pair.

[0042] There are various ways to connect the first planetary carrier 11 and the spur gear 13. In some embodiments, the outer edge of the first planetary carrier 11 is provided with a toothed structure 112, and the gear meshes with the toothed structure 112, thus realizing the transmission connection between the first planetary carrier 11 and the spur gear 13. In other embodiments, a transmission gear can also be fitted around the first planetary carrier 11, and the transmission gear meshes with the spur gear 13, thereby realizing the transmission connection between the first planetary carrier 11 and the spur gear 13. It can be understood that compared to fitting an additional transmission gear around the first planetary carrier 11, providing a toothed structure 112 on the outer edge of the first planetary carrier 11 can effectively reduce the number of parts, shorten the axial dimension, and reduce the mating clearance between the spur gear 13 and the first planetary carrier 11, simplifying the assembly process, reducing the overall weight and cost, and improving the reliability of the transmission assembly 1.

[0043] The spur gear 13 and the second bevel gear 14 can be connected by a gear set or by other means, and this application does not limit this. In some embodiments, the spur gear 13 and the second bevel gear 14 are arranged at intervals along the axial direction of the spur gear 13. The transmission assembly 1 also includes a connecting shaft 15, which is connected between the spur gear 13 and the second bevel gear 14. When the spur gear 13 rotates under the drive of the first planetary carrier 11, the rotation of the spur gear 13 can be transmitted to the first bevel gear 12 via the connecting shaft 15.

[0044] The spur gear 13 and the second bevel gear 14 are arranged at intervals along the axial direction of the spur gear 13, which can tandem the speed-up and commutation of the wind turbine power on the same axis, avoiding the radial expansion caused by the parallel layout, thereby reducing the space occupied by the spur gear 13 and the second bevel gear 14 on the wind turbine components and keeping the nacelle profile compact.

[0045] The transmission assembly 1 also includes a second output end 5, through which the power of the wind turbine can be transmitted to the engine, thereby driving the engine to generate electricity. In some embodiments, the axis of the second output end 5 and the axis of the first output end 4 are two intersecting axes, which can be a 30° intersection or a 60° intersection. For example, the axis of the second output end 5 is perpendicular to the axis of the first output end 4. In this way, while realizing the transmission of wind turbine power to the generator and pumping device, the spatial arrangement of the engine and pumping device within the wind turbine is optimized, the overall length of the nacelle is shortened, and the compactness of the wind turbine is improved.

[0046] To achieve the connection between the transmission unit and the engine, in some embodiments, the first planetary carrier 11 is also provided with a fourth mounting hole 113. The transmission assembly 1 also includes a transmission shaft 16. One end of the transmission shaft 16 is connected in the fourth mounting hole 113 of the first planetary carrier 11, and the other end is used to set a second output end 5 for connection with the engine. When the wind turbine rotates under the drive of wind, the rotation of the wind turbine can drive the second planetary carrier 21 to rotate. The rotation of the second planetary carrier 21 drives the output shaft 22 to rotate. The rotation of the output shaft 22 drives the first planetary carrier 11 to rotate. The rotation of the first planetary carrier 11 drives the transmission shaft 16 to rotate, thereby transmitting the power of the wind turbine to the generator, thereby controlling the generator to generate electricity. At the same time, the rotation of the first planetary carrier 11 can also drive the spur gear 13, the first bevel gear 12 and the second bevel gear 14 to rotate, thereby transmitting the power of the wind turbine to the pumping device.

[0047] Understandably, in other possible embodiments of this application, other transmission components may also be used to connect the main shaft of the wind turbine to the engine; however, compared with the above method, using the transmission shaft 16 to connect with the first planetary carrier 11, and receiving the power of the wind turbine through the first planetary carrier 11 and outputting it to the generator, can achieve the reuse of the first planetary carrier 11, that is, to retain the shortest axial path for the main power generation channel, reduce the distance between the wind turbine and the generator, reduce the energy loss between the wind turbine and the generator, improve the generator efficiency, and utilize the radial spare space to install the pump body, maximize the use of the three-dimensional space of the nacelle and reduce the overall axial length, thereby improving the compactness of the wind turbine unit.

[0048] In some embodiments, the axis of the drive shaft 16 coincides with the axis of the output shaft 22, thereby minimizing the distance between the engine and the wind turbine, reducing energy loss between the wind turbine and the generator, improving the generator's efficiency, and increasing the compactness of the nacelle.

[0049] It should be noted that the coincidence of the axis of the drive shaft 16 and the axis of the output shaft 22 does not mean that they are strictly on the same geometric straight line. Rather, it is permissible to have slight coaxiality deviations within the manufacturing and assembly tolerance range. As long as the coaxiality of the axis of the drive shaft 16 and the axis of the output shaft 22 is within the range specified by the national standard, it shall be within the scope of protection of this application.

[0050] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A wind power speed increaser, characterized in that, The wind power speed increaser includes an input end and a first output end. The input end is used to connect to the wind turbine, and the first output end is used to connect to the pumping device. The power of the wind turbine can reach the first output end through the input end and drive the pumping device to work. The axis of the input terminal is intersecting the axis of the output terminal.

2. The wind power speed increaser according to claim 1, characterized in that, The wind power speed increaser includes a transmission assembly, which includes a first planetary carrier and a first bevel gear, wherein the first bevel gear is connected to the outer peripheral surface of the first planetary carrier in a transmission connection. The first planetary carrier is connected to the input end in a transmission manner, and the first output end is located on the first bevel gear.

3. The wind power speed increaser according to claim 2, characterized in that, The transmission assembly further includes a spur gear and a second bevel gear, the spur gear being drivenly connected to the outer edge of the first planetary carrier; The second bevel gear is connected to the spur gear and meshes with the first bevel gear.

4. The wind power speed increaser according to claim 3, characterized in that, The spur gear and the second bevel gear are arranged at intervals along the axial direction of the spur gear.

5. The wind power speed increaser according to claim 3, characterized in that, The outer edge of the first planetary carrier is provided with a toothed structure, which meshes with the spur gear.

6. The wind power speed increaser according to claim 2, characterized in that, The wind power speed increaser also includes a bearing, the outer ring of which is used for fixed connection with the pumping device; The inner ring of the bearing is connected to the first planetary carrier.

7. The wind power speed increaser according to claim 2, characterized in that, The wind power speed increaser also includes a power input component, which includes a second planetary carrier and an output shaft connected together. The input terminal is located on the second planetary carrier; the output shaft is connected to the first planetary carrier.

8. The wind power speed increaser according to claim 1, characterized in that, The wind power speed increaser also includes a second output terminal, which is used to connect to the engine; The axis of the second output terminal and the axis of the first output terminal are two intersecting axes.

9. The wind power speed increaser according to claim 7, characterized in that, The wind power speed increaser includes a transmission assembly, which includes a first planetary carrier and a drive shaft connected to each other, and the second output end is located on the drive shaft.

10. A wind turbine generator set, characterized in that, Including the wind power speed increaser according to any one of claims 1-9.

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