Sail type generator set

Abstract

The utility model belongs to the technical field of wind power generation equipment, and provides a sail type generator set which comprises a tower drum, a generator, a hub, a plurality of sail devices and a transmission device, the generator is arranged at the lower end of the tower drum, the hub is rotatably arranged at the top of the tower drum, the sail devices are uniformly arranged in the circumferential direction of the hub, and the transmission device is arranged in the tower drum. The transmission device is used for connecting the hub with the generator in a transmission mode. According to the utility model, the generator is arranged at the lower end of the tower drum, so that the generator can be conveniently overhauled and maintained daily.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, and particularly relates to a sail-type generator set. Background Art

[0002] A sail-type generator set is a device based on a sail configuration for converting wind energy into electrical energy. Among existing wind turbines, for those that generate electricity through sails or through blades, the generators are usually installed at the upper end or the top of the tower barrel. Such an installation design is not convenient for the daily inspection and maintenance of the generator. Content of the Utility Model

[0003] Aiming at the defects in the prior art, the purpose of the utility model is to provide a sail-type generator set to solve or at least alleviate one or more of the above technical problems or other problems existing in the prior art.

[0004] To achieve the above purpose, the utility model provides a sail-type generator set, including: a tower barrel; a generator disposed at the lower end of the tower barrel; a hub rotatably disposed at the top of the tower barrel; a plurality of sail devices evenly arranged circumferentially around the hub; and a transmission device for drivingly connecting the hub and the generator.

[0005] Further, the transmission device includes: a gear ring sleeved on the hub; a gear meshing with the gear ring; and a transmission shaft longitudinally disposed on the barrel wall of the tower barrel, rotatable about its own axis, with the upper end connected to the gear and the lower end drivingly connected to the generator.

[0006] Further, the transmission shaft includes a plurality of shaft bodies sequentially connected, and the transmission device further includes a coupling for connecting adjacent shaft bodies together.

[0007] Further, the sail device includes: a connecting arm transversely disposed, with one end fixedly connected to the hub; a mast longitudinally disposed, with the lower end fixedly connected to the other end of the connecting arm; a sail disposed on the mast, movable along the extending direction and the circumferential direction of the mast; a sail lifting device disposed on the mast, acting on the upper end of the sail to enable the sail to perform a lifting movement; and a sail deflection device disposed on the mast, acting on the sail to change the deflection angle of the sail.

[0008] Further, the sail includes: a sail body; a plurality of support rods longitudinally spaced apart on the sail body; and a plurality of guide rings, with the guide rings corresponding to the support rods one by one, the guide rings fixedly disposed on the support rods and also sleeved outside the mast.

[0009] Furthermore, the mast is of a tubular structure, and the sail lifting device includes: a guide pulley disposed at the top of the mast; a first towing cable that bypasses the guide pulley, with one end connected to the uppermost support rod of the sail and the other end extending into the mast; and a first retracting and releasing mechanism for retracting or releasing the other end of the first towing cable.

[0010] Furthermore, the number of the sail devices is three.

[0011] Furthermore, a wind speed meter is provided at the top of the tower barrel. The sail lifting device controls the lifting of the sail according to the measurement result of the wind speed meter, and the sail deflection device controls the maximum deflection angle of the sail according to the measurement result of the wind speed meter.

[0012] Furthermore, an energy storage device is provided on the hub, and the energy storage device is used to supply power to the sail lifting device, the sail deflection device, and the wind speed meter.

[0013] Furthermore, a slip ring device for transmitting power electricity and control signals is included, and the slip ring device is electrically connected to the generator, the sail lifting device, the sail deflection device, the wind speed meter, and the energy storage device.

[0014] Advantages of the present utility model: For a windmill type generator set provided by the present utility model, by installing the generator at the lower end of the tower barrel, it is convenient to perform daily inspection and maintenance on the generator. Description of the Drawings

[0015] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0016] Figure 1 It is a perspective view of a windmill type generator set provided by an embodiment of the present utility model;

[0017] Figure 2 It is Figure 1 the enlarged view of part A in Figure 2 wherein, in

[0018] the rectifying shroud is partially hidden;

[0019] Reference numerals:

[0020] 20. Sail device; 21. Connecting arm; 22. Mast; 23. Sail; 231. Sail body; 232. Support rod; 233. Guide ring; 241. Guide wheel; 242. First towing cable

[0021] 30. Transmission device; 31. Ring gear; 32. Gear; 33. Transmission shaft; 331. Shaft body; 332. Coupling Detailed implementation manners

[0022] Hereinafter, embodiments of the technical solution of the present utility model will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and thus are only examples and cannot be used to limit the protection scope of the present utility model

[0023] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which the present utility model belongs

[0024] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation to the present utility model

[0025] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances

[0027] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0028] like Figure 1-2 As shown, this embodiment provides a sail-type generator set, including a tower 10, a generator 11, a hub 12, a sail device 20, and a transmission device 30. The tower 10 mainly plays a supporting role. The generator 11 is arranged at the lower end of the tower 10. The generator 11 can be installed on the ground or on the tower 10, and can be installed inside or outside the tower 10. The hub 12 is rotatably arranged at the top of the tower 10, that is, the hub 12 is rotatably connected to the top of the tower 10. A plurality of sail devices 20 are evenly arranged around the circumference of the hub 12. The transmission device 30 is used to transmit the hub 12 to the engine.

[0029] In this embodiment, the generator 11 is installed at the lower end of the tower 10 , which makes it convenient to perform daily inspection and maintenance on the generator 11 .

[0030] In one embodiment, the transmission device 30 includes a ring gear 31, a gear 32, and a drive shaft 33. The ring gear 31 is mounted on the hub 12 and rotates with it. The ring gear 31 can be located at the lower end of the hub 12, and the gear 32 is meshed with the gear 32. The drive shaft 33 is longitudinally mounted on the wall of the tower 10 and is rotatable about its axis. The upper end of the drive shaft 33 is fixedly connected to the gear 32, and the lower end is in transmission connection with the generator 11. The drive shaft 33 rotates with the rotation of the gear 32. The drive shaft 33 can be mounted on the outer wall of the tower 10 or on the inner wall of the tower 10. Because the drive shaft 33 is longitudinally mounted, while the main shaft of the generator 11 is typically transversely mounted, the transmission connection between the drive shaft 33 and the generator 11 requires a speed reducer. The transmission device 30 in this embodiment has a simple structure and is easy to inspect and maintain.

[0031] In one embodiment, since the tower barrel 10 usually has a relatively high height, if a single transmission shaft 33 is used for transmission, the length of the transmission shaft 33 will be very long, which is not convenient for machining, transportation and installation. Therefore, in this embodiment, the transmission shaft 33 includes multiple shaft bodies 331 connected in sequence. Correspondingly, the transmission device 30 further includes a coupling 332 for connecting adjacent shaft bodies 331 together.

[0032] In addition, according to whether the adjacent two shaft bodies 331 are coaxially arranged, the type of the coupling 332 is also different. For example, if the adjacent two shaft bodies 331 are coaxially arranged, at this time, the coupling 332 can be a rigid coupling 332. Another example is that the adjacent two shaft bodies 331 are not coaxially arranged, that is, there is a certain offset in the axial direction and / or the radial direction. At this time, the coupling 332 can be a flexible coupling 332 or a universal coupling 332. Since the outer surface of the tower barrel 10 is usually a curved surface, therefore, if multiple shaft bodies 331 are installed along the longitudinal direction on the outer surface of the tower barrel 10, in this case, the adjacent two shaft bodies 331 are not coaxially arranged. Of course, it is also possible to adjust the size of the mounting seat for supporting the shaft body 331 so that the multiple shaft bodies 331 are coaxially arranged.

[0033] In this embodiment, by segmenting the design of the transmission shaft 33, it is convenient for machining, transportation and installation.

[0034] In one embodiment, the sail device 20 includes a connecting arm 21, a mast 22, sails 23, a sail lifting device and a sail deflection device. The connecting arm 21 is arranged transversely, and one end (i.e., the inner end) is fixedly connected to the hub 12. The mast 22 is arranged longitudinally, and the lower end of the mast 22 is fixedly connected to the other end (i.e., the outer end) of the connecting arm 21. The sails 23 are installed on the mast 22 and can move along the extending direction (i.e., the length direction) and the circumferential direction of the mast 22. When the sail moves along the extending direction of the mast 22, the sail makes a lifting motion, so that the folding of the sail can be realized; when the sail moves along the circumferential direction of the mast 22, the sail makes a rotational motion, so that the deflection of the sail can be realized. The sail lifting device is arranged on the mast 22, and the sail lifting device acts on the upper end of the sail, that is, applies a force to the upper end of the sail to make the sail make a lifting motion. The sail deflection device is arranged on the mast 22, and the sail deflection device also acts on the sail, that is, applies a force to the sail to change the maximum deflection angle of the sail.

[0035] In this embodiment, by providing the sail lifting device and the sail deflection device, the lifting of the sail and the control of the maximum deflection angle can be realized.

[0036] In one embodiment, the sail 23 includes a sail body 231, support rods 232, and guide rings 233. The material of the sail body 231 can be polymer fiber materials such as nylon, polyester, carbon fiber, and aramid. The sail body 231 can be made of a single piece of fabric or spliced by multiple pieces of fabric. A plurality of support rods 232 are arranged at intervals along the longitudinal direction on the sail body 231. The support rods 232 extend horizontally, and the support rods 232 are fixedly connected to the sail body 231. It should be noted that the support rods 232 extending horizontally can be arranged in the horizontal direction or in a direction at a certain angle to the horizontal direction. Among the plurality of support rods 232, according to the different shapes of the sail body 231, some support rods 232 can be arranged in the horizontal direction, and some support rods 232 can be arranged in a direction at a certain angle to the horizontal direction. For example, there are 5 support rods 232, and 4 support rods 232 from bottom to top are arranged in the horizontal direction, and the uppermost support rod 232 is arranged in a direction at an angle of 30 to 60° to the horizontal direction. The guide rings 233 are arranged in one-to-one correspondence with the support rods 232. Therefore, there are also a plurality of guide rings 233. The guide rings 233 are fixedly arranged on the support rods 232 and sleeved outside the mast 22. The guide rings 233 guide the movement of the sail body 231.

[0037] In this embodiment, by providing the support rods 232 and the guide rings 233, on the one hand, the fabric of the sail body 231 between two support rods 232 can be folded or stacked, thus providing a basis for realizing the lifting of the sail body 231. On the other hand, the sail body 231 can rotate around the mast 22, thus providing a basis for realizing the deflection of the sail body 231.

[0038] In one embodiment, the mast 22 is a tubular structure. The sail lifting device includes a guide wheel 241, a first towing cable 242, and a first retracting and releasing mechanism (not shown in the drawings). The guide wheel 241 is fixedly arranged at the top of the mast 22. The guide wheel 241 can be located on the outer wall of the mast 22. The first towing cable 242 bypasses the guide wheel 241, and one end is fixedly connected to the uppermost support rod 232 in the sail, and the other end extends into the mast 22. The first retracting and releasing mechanism is used to retract or release the other end of the first towing cable 242. The first retracting and releasing mechanism can include a winding motor and a drum driven by the winding motor. The first towing cable 242 is fixedly connected to the drum. The first retracting and releasing mechanism can be located inside the mast 22. For example, the above-mentioned winding motor and drum are both installed in the tubular structure of the mast 22. The first retracting and releasing mechanism can also be located outside the mast 22. For example, the above-mentioned winding motor and drum are both installed outside the mast 22 and at the bottom of the mast 22. The first retracting and releasing mechanism can also be partially located inside the mast 22 and partially located outside the mast 22. For example, the drum is installed in the tubular structure of the mast 22, and the winding motor is installed on the outer wall of the mast 22 or the connecting arm 21.

[0039] In this embodiment, the structure of the sail lifting device is simple, and part of the structure of the sail lifting device can be arranged inside the mast 22, which not only has a beautiful appearance, but also the mast 22 can protect this part of the structure.

[0040] In one embodiment, the sail deflection device includes a second towline and a second retracting and releasing mechanism. Among them, the second towlines are arranged in one-to-one correspondence with the support rods 232, so a plurality of second towlines are correspondingly arranged. One end of the second towline can be fixedly connected to one end of the support rod 232, and the other end is connected to the second retracting and releasing mechanism, so as to be retracted or released by the second retracting and releasing mechanism. The other ends of the plurality of second towlines can be connected together first and then connected to the second retracting and releasing mechanism. The second retracting and releasing mechanism is arranged on the connecting arm 21 or the mast 22 in one of the sail devices 20 corresponding to the second towline to be retracted and released. The second retracting and releasing mechanism can be a structure including a winding motor and a drum, or a structure including a telescopic rod that can actively expand and contract. The above sail deflection device has been disclosed in the prior application of the inventor of the present application. In addition, the sail deflection device can also have other structural forms, which will not be further described in this application, but will be introduced in detail in other related application documents of the inventor of the present application.

[0041] In one embodiment, the number of sail devices 20 is three, which can reduce the cost of the entire sail-type generator set.

[0042] In one embodiment, the sail-type generator set further includes an anemometer 13 arranged at the top of the tower barrel 10. The sail lifting device controls the lifting of the sail according to the measurement result of the anemometer 13, and the sail deflection device controls the maximum deflection angle of the sail according to the measurement result of the anemometer 13. The measurement result of the anemometer 13 is fed back to the controller of the sail-type generator set, and the controller then outputs control signals to the sail lifting device and the sail deflection device according to a preset control program, such as signals for lifting the sail and signals for deflecting the sail.

[0043] Specifically, the process of controlling the lifting of the sail according to the wind speed measured by the anemometer is as follows: when the wind speed measured by the anemometer reaches the starting wind speed, the sail lifting device unfolds the retracted sail; when the wind speed is higher than the maximum value that the fan can withstand (such as a typhoon), the sail lifting device retracts the unfolded sail.

[0044] Specifically, the process of controlling the deflection of the sail according to the wind speed measured by the anemometer is as follows: under normal wind speed, if the initially set maximum deflection angle is 90 degrees, the fan will not be adjusted during operation, and the sail will operate at the maximum deflection angle of 90 degrees; if the wind force is too large, such as a typhoon, the speed of the fan needs to be reduced or the fan needs to be shut down. Correspondingly, the maximum deflection angle of the sail also needs to be reduced, and then the sail will operate at the reduced maximum deflection angle.

[0045] In one embodiment, it further includes an energy storage device 14 provided on the hub 12. Electrical energy is stored in the energy storage device 14, and the electrical energy in the energy storage device 14 can be provided by the generator 11. The energy storage device 14 is used to supply power to the sail lifting device, the sail deflection device, and the anemometer 13 to ensure the normal operation of the sail lifting device, the sail deflection device, and the anemometer 13.

[0046] In one embodiment, the sail-type generator set further includes a rectifying shroud 15 provided outside the hub 12. The outer shape of the rectifying shroud 15 is similar to a spherical shape or an ellipsoidal shape, and the rectifying shroud 15 can protect the components covered by it, such as the hub 12 and the energy storage device 14, etc.

[0047] In one embodiment, it further includes a slip ring device 16 for transmitting power electricity and control signals. The slip ring device 16 is electrically connected to the generator 11, the sail lifting device, the sail deflection device, the anemometer 13, and the energy storage device 14. The slip ring device 16 includes a stator part fixedly connected to the upper end of the tower barrel 10 and a rotor part fixedly connected to the fan hub 12. The stator part can be electrically connected to the generator 11 and the controller, and the rotor part can be electrically connected to the sail lifting device, the sail deflection device, the anemometer 13, the energy storage device 14, etc. Power electricity and control signals can be transmitted between the stator part and the rotor part, so as to realize power supply to facilities such as the sail lifting device, the sail deflection device, the anemometer 13, and the energy storage device 14 and transmission of control signals.

[0048] In the description of the present utility model, a large number of specific details are illustrated. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be covered within the scope of the claims and the description of the present utility model.

Claims

1. A windmill-type generator set, characterized in that Comprising: Tower barrel (10); Generator (11), arranged at the lower end of the tower barrel (10); Hub (12), rotatably arranged at the top of the tower barrel (10); A plurality of sail devices (20), evenly arranged circumferentially around the hub (12); and Transmission device (30), used for drivingly connecting the hub (12) and the generator (11).

2. The sail-type generator set according to claim 1, characterized in that The transmission device (30) comprises: Toothed ring (31), sleeved on the hub (12); Gear (32), meshing with the toothed ring (31); and Drive shaft (33), longitudinally arranged on the barrel wall of the tower barrel (10), rotatable around its own axis, with the upper end connected to the gear (32) and the lower end drivingly connected to the generator (11).

3. The sail-type generator set according to claim 2, characterized in that The drive shaft (33) comprises a plurality of shaft bodies (331) connected in sequence, and the transmission device (30) further comprises a coupling (332) for connecting adjacent shaft bodies (331) together.

4. The sail-type generator set according to claim 1, characterized in that The sail device (20) comprises: Connecting arm (21), arranged transversely, with one end fixedly connected to the hub (12); Mast (22), arranged longitudinally, with the lower end fixedly connected to the other end of the connecting arm (21); Sail (23), arranged on the mast (22), movable along the extending direction and circumferentially of the mast (22); Sail lifting device, arranged on the mast (22), acting on the upper end of the sail (23) to make the sail (23) perform a lifting motion; and Sail deflection device, arranged on the mast (22), acting on the sail (23) to change the deflection angle of the sail (23).

5. The sail-type generator set according to claim 4, characterized in that The sail (23) comprises: Sail body (231); A plurality of support rods (232), arranged longitudinally at intervals on the sail body (231); and A plurality of guide rings (233), the guide rings (233) are arranged in one-to-one correspondence with the support rods (232), the guide rings (2)33) are fixedly arranged on the support rods (232) and also sleeved outside the mast (22).

6. The sail-type generator set according to claim 5, characterized in that The mast (22) is of a tubular structure, and the sail lifting device comprises: Guide wheel (241), arranged at the top of the mast (22); First towing cable (242), bypassing the guide wheel (241), with one end connected to the uppermost support rod (232) of the sail (23) and the other end extending into the mast (22); and First retracting and releasing mechanism, used for retracting or releasing the other end of the first towing cable (242).

7. The sail-type generator set according to any one of claims 1-6, characterized in that The number of the sail devices (20) is three.

8. The sail-type generator set according to claim 4, wherein it further includes an anemometer (13) arranged at the top of the tower barrel (10), the sail lifting device controls the lifting of the sail (23) according to the measurement result of the anemometer (13), and the sail deflection device controls the maximum deflection angle of the sail (23) according to the measurement result of the anemometer (13).

9. The sail-type generator set according to claim 8, wherein it further includes an energy storage device (14) arranged on the hub (12), and the energy storage device (14) is used to supply power to the sail lifting device, the sail deflection device and the anemometer (13).

10. The sail-type generator set according to claim 9, wherein it further includes a slip ring device (16) for transmitting power electricity and control signals, and the slip ring device (16) is electrically connected to the generator (11), the sail lifting device, the sail deflection device, the anemometer (13) and the energy storage device (14).

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