Novel wind driven generator

Abstract

The novel wind driven generator comprises a support, the support is composed of a cabin, a yawing cabin and a plurality of pipe bodies used for connecting the cabin and the yawing cabin, the cabin and the pipe bodies are fixedly connected in sequence, the pipe body at the topmost end is rotationally connected with the yawing cabin through a bearing, a fan blade shaft is rotationally connected into the yawing cabin, and the fan blade shaft is rotationally connected with the yawing cabin through a bearing. One end of the fan blade shaft penetrates through the yaw cabin and then is fixedly connected with fan blades, a transmission shaft penetrates through the yaw cabin, the pipe body and the cabin, and a generator set is installed in the cabin; the generator set is installed in the cabin located at the bottom end of the support, during installation and maintenance, a crane does not need to be used for hoisting the generator set to the high altitude of tens of meters, the safety and maintenance difficulty of the generator set in the wind driven generator can be effectively reduced, the weight of the top end of the wind driven generator is effectively reduced, and the cost is reduced. Therefore, the requirement of the wind driven generator for the height of the tower pole is reduced, and the production cost of the wind driven generator is saved.

Description

Technical Field

[0001] This invention relates to a wind turbine generator, specifically a novel wind turbine generator. Background Technology

[0002] Currently, wind power is being used more and more frequently, and it can be found on mountaintops and in the sea. Wind power itself is an inexhaustible, clean, and pollution-free energy source.

[0003] The original wind turbines had the blades, gearboxes, and generators installed directly in the top nacelle of a tower weighing hundreds of tons. This made installation and maintenance extremely difficult. Because the towers were tens of meters long, the supporting materials had to take into account the total weight of the wind turbines, blades, gearboxes, and generators, requiring high structural strength and consuming a lot of materials. When installing the generator, a crane had to be used to lift it to a height of tens of meters, making the installation very difficult for the installers. Moreover, when repairing the large motors and gearboxes, they had to climb tens of meters into the air each time, and replacing the generator was even more dangerous.

[0004] Therefore, we propose a new type of wind turbine. Summary of the Invention

[0005] The purpose of this invention is to provide a novel wind turbine to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A novel wind turbine includes a support frame, which consists of a nacelle, a yaw nacelle, and several tubes connecting the nacelle and the yaw nacelle. The nacelle and the tubes are fixedly connected in sequence. The topmost tube is rotatably connected to the yaw nacelle via a bearing. A fan blade shaft is rotatably connected inside the yaw nacelle. One end of the fan blade shaft passes through the yaw nacelle and is fixedly connected to a fan blade. A drive shaft is shared by the yaw nacelle, the tubes, and the nacelle. A generator set is installed inside the nacelle. The top end of the drive shaft is connected to the fan blade shaft via a gear transmission mechanism, and the bottom end of the drive shaft is fixedly connected to the input shaft of the generator set via a coupling. An inspection door is provided on the outer wall of the nacelle.

[0008] As a further aspect of the present invention: the drive shaft is composed of several vertical shafts connected end to end in sequence, and adjacent vertical shafts are fixedly connected by couplings. The vertical shafts are rotatably connected to the corresponding tube body, engine room, and yaw compartment by cages.

[0009] As a further aspect of the present invention: a mounting base is fixedly connected to the inner wall of the cabin, a sliding platform is slidably mounted on the top of the mounting base, and the generator set is fixed on the sliding platform.

[0010] As a further aspect of the present invention: the yaw cabin is T-shaped, and a tension spring is fixedly connected to the end of the yaw cabin away from the fan blade, and the bottom end of the tension spring is fixedly connected to the bottom end of the outer wall of the yaw cabin.

[0011] As a further aspect of the present invention: a heat dissipation device is installed inside the cabin.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This invention installs the generator set in the nacelle located at the bottom of the support frame. During installation and maintenance, there is no need to use a crane to lift the generator set to a height of tens of meters. This effectively reduces the safety and maintenance difficulty of the generator set in the wind turbine, and also effectively reduces the weight of the top of the wind turbine, thereby reducing the height requirements of the wind turbine tower and saving the production cost of the wind turbine. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0016] Figure 3 This is a top view schematic diagram of the fan blade distribution structure and the first installation method of the wind direction guide plate in Embodiment 2 of the present invention.

[0017] Figure 4 This is a schematic diagram of the second installation method for the wind direction guide plate.

[0018] Among them, the bracket is 1, the nacelle is 2, the maintenance door is 3, the pipe body is 4, the bearing is 5, the yaw compartment is 6, the mounting base is 7, the slide is 8, the generator set is 9, the vertical shaft is 10, the fan blade shaft is 11, the fan blade is 12, the tension spring is 13, the wind direction guide plate is 14, and the base is 15. Detailed Implementation

[0019] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation in the specification, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0022] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0023] Example 1:

[0024] Please see Figure 1 This invention provides a novel wind turbine generator, comprising a support frame 1. The support frame 1 consists of a nacelle 2, a yaw nacelle 6, and several tubes 4 for connecting the nacelle 2 and the yaw nacelle 6. The nacelle 2 and the several tubes 4 are fixedly connected in sequence. The topmost tube 4 is rotatably connected to the yaw nacelle 6 via a bearing 5. A fan blade shaft 11 is rotatably connected inside the yaw nacelle 6. One end of the fan blade shaft 11 passes through the yaw nacelle 6 and is fixedly connected to a fan blade 12. A drive shaft is shared inside the yaw nacelle 6, the tubes 4, and the nacelle 2. A generator set 9 is installed inside the nacelle 2. The top end of the drive shaft is connected to the fan blade shaft 11 via a gear transmission mechanism. The bottom end of the drive shaft is fixedly connected to the input shaft of the generator set 9 via a coupling. An inspection door 3 is provided on the outer wall of the nacelle 2. The yaw nacelle 6 is T-shaped, and a tension spring 13 is fixedly connected to the end of the yaw nacelle 6 away from the fan blade 12. The bottom end of the tension spring 13 is fixedly connected to the bottom end of the outer wall of the yaw nacelle 6.

[0025] By adopting the above-mentioned solution, the present invention installs the generator set 9 in the nacelle 2 located at the bottom of the support 1, eliminating the need to use a crane to lift the generator set to a height of tens of meters. This effectively reduces the safety and maintenance difficulty of the generator set 9 in the wind turbine, and also effectively reduces the weight of the top of the wind turbine, thereby reducing the height requirements of the wind turbine tower and saving the production cost of the wind turbine.

[0026] By setting the tension spring 13, a downward pulling force can be provided to align the end of the yaw cabin 6 away from the fan blade 12, thereby balancing the downward pressure exerted by the fan blade on the yaw cabin 6, so that the rotation of the yaw cabin 6 is more stable and the wear of the bearing is reduced.

[0027] Example 2:

[0028] Please see Figure 2 , Figure 3 The difference between this embodiment and embodiment one is that three fan blade shafts 11 are provided on the side wall of the yaw cabin 6, and fan blades 12 are fixedly installed at the ends of the fan blade shafts 11. The three fan blade shafts 11 are connected to the top of the transmission shaft through a mechanical transmission structure, and no tension spring 13 is installed on the yaw cabin 6.

[0029] By setting up three fan blades 12, the force on the yaw nacelle 6 can be more balanced, thereby reducing bearing wear and making it easier for the wind turbine to generate electricity from wind in all directions.

[0030] Example 3:

[0031] Based on Embodiment 2, this embodiment has several first magnets fixedly installed at the bottom of the yaw cabin 6 and several second magnets fixedly installed at the top of the tube 4 at the top. The first magnets and second magnets have the same polarity facing each other, thereby applying an upward thrust to the yaw cabin 6 by using the repulsion of like poles to reduce the downward pressure on the bearing 5 caused by the two fan blades 12.

[0032] In addition, please combine Figure 1 In some preferred embodiments of the present invention, the drive shaft is composed of a plurality of vertical shafts 10 connected end to end in sequence, and adjacent vertical shafts 10 are fixedly connected by couplings. The vertical shafts 10 are rotatably connected to the corresponding tube body 4, engine room 2, and yaw compartment 6 by retainers.

[0033] The transmission shaft, composed of multiple vertical shafts 10, can reduce the difficulty of production and installation of the transmission shaft, and make it easier to inspect and repair the transmission shaft, thus reducing the maintenance cost of the transmission shaft.

[0034] Specific combination Figure 1 In some preferred embodiments of the present invention, a mounting base 7 is fixedly connected to the inner wall of the nacelle 2, and a sliding platform 8 is slidably mounted on the top of the mounting base 7. The generator set 9 is fixed on the sliding platform 8. When the wind turbine is installed on a mountain, the total height of the mounting base 7 and the sliding platform 8 should be no less than three meters, so that the distance between the generator set 9 and the ground is greater than three meters, in order to prevent water from entering the generator set 9 during flash floods. When the wind turbine is installed at sea, the total height of the mounting base 7 and the sliding platform 8 should be no less than three meters, and the generator set 9 should be at least three meters above the sea level to prevent seawater from entering the generator set 9.

[0035] With the installation of mounting base 7 and slide table 8, when the generator set 9 needs to be repaired, after disconnecting it from the drive shaft, the slide table 8 can be extended from the maintenance door 3 to move the generator set 9 outside the nacelle 2, thereby further reducing the maintenance difficulty of the generator set 9.

[0036] In addition, a heat dissipation device for generator set 9 is installed in the engine compartment 2. Depending on the type of generator set 9, the heat dissipation device can be either air-cooled or water-cooled to dissipate heat and cool down the generator set 9 during continuous operation, so as to prevent the generator set 9 from malfunctioning due to high temperature.

[0037] Furthermore, such as Figure 3 As shown, when this patent has three fan blades, a wind direction guide plate 14 can also be provided on the side of the base 15, at the end opposite to the main shaft 6 of the fan blade 12. The wind direction guide plate 14 is coaxial with the vertical axis of the main shaft 6. When the wind comes, it will blow the wind direction guide plate 14 in the opposite direction of the wind, thereby ensuring that the fan blades are always facing the direction of the wind, thus improving the rotation efficiency and power generation efficiency.

[0038] Furthermore, such as Figure 2 and Figure 4 As shown, when this patent has two fan blades, a wind direction guide plate 14 can also be installed on the side of the bracket 1 and the lower side of the main shaft 6. The transverse axis of the wind direction guide plate 14 is parallel to the transverse axis of the main shaft 6. When the wind blows, it will cause the wind direction guide plate 14 to rotate and make its transverse axis coaxial with the direction of the wind, thereby ensuring that the fan blades are always facing the direction of the wind, thus improving the rotation efficiency and power generation efficiency.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel wind turbine generator, characterized in that: The system includes a support frame (1), which consists of a nacelle (2), a yaw compartment (6), and several tubes (4) for connecting the nacelle (2) and the yaw compartment (6). The nacelle (2) and several tubes (4) are fixedly connected in sequence. The tube (4) at the top is rotatably connected to the yaw compartment (6) through a bearing (5). A fan blade shaft (11) is rotatably connected inside the yaw compartment (6). One end of the fan blade shaft (11) passes through the yaw compartment (6) and is fixedly connected to a fan blade (12). A drive shaft is installed in the yaw compartment (6), the tubes (4), and the nacelle (2). A generator set (9) is installed inside the nacelle (2). The top end of the drive shaft is connected to the fan blade shaft (11) through a gear transmission mechanism. The bottom end of the drive shaft is fixedly connected to the input shaft of the generator set (9) through a coupling. An inspection door (3) is provided on the outer wall of the nacelle (2).

2. The novel wind turbine generator according to claim 1, characterized in that: The drive shaft is composed of several vertical shafts (10) connected end to end in sequence, and adjacent vertical shafts (10) are fixedly connected by couplings. The vertical shafts (10) are rotatably connected to the corresponding tube body (4), engine room (2), and yaw compartment (6) through retainers.

3. The novel wind turbine generator according to claim 1, characterized in that: The inner wall of the engine room (2) is fixedly connected to a mounting base (7), and a sliding table (8) is slidably mounted on the top of the mounting base (7). The generator set (9) is fixed on the sliding table (8).

4. The novel wind turbine generator according to claim 1, characterized in that: The yaw cabin (6) is T-shaped, and a tension spring (13) is fixedly connected to the end of the yaw cabin (6) away from the fan blade (12). The bottom end of the tension spring (13) is fixedly connected to the bottom end of the outer wall of the yaw cabin (6).

5. The novel wind turbine generator according to claim 1, characterized in that: The cabin (2) is equipped with a heat dissipation device.

6. The novel wind turbine generator according to claim 1, characterized in that: When this patent has three fan blades, a wind direction guide plate (14) is provided on the side of the base (15) at the end opposite to the main shaft (6) of the fan blade (12), and the wind direction guide plate (14) is coaxial with the vertical axis of the main shaft (6).

7. The novel wind turbine generator according to claim 1, characterized in that: When this patent has two fan blades, a wind direction guide plate (14) is provided on the side of the bracket (1) and the lower side of the main shaft (6), and the transverse axis of the wind direction guide plate (14) is parallel to the transverse axis of the main shaft (6).

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