A new offshore multi-blade wind turbine

Abstract

The application discloses a novel offshore multi-blade wind turbine, which comprises mounting racks, support rods, connecting rods, yaw devices and wind machines. The mounting racks are arranged in an array, each of the mounting racks is in a circular ring structure, the support rods are connected between two vertically adjacent mounting racks, the connecting rods are connected between two horizontally adjacent mounting racks, the yaw devices are arranged on each of the mounting racks, the wind machines are arranged on the yaw devices, and the wind machines are located at the centers of the mounting racks. The yaw devices are used for driving the wind machines to rotate along the circumferential direction of the mounting racks. The application can reduce the sea area, improve the power generation efficiency and prolong the service life.

Description

Technical Field

[0001] This invention relates to the field of marine floating wind power platform technology, specifically a new type of offshore multi-bladed wind turbine. Background Technology

[0002] Developing renewable energy technologies is crucial for achieving the two major goals, and wind power, as a high-quality renewable energy source, has already seen significant development. Deep-sea wind power technology has become an emerging hot topic; however, existing offshore wind turbines occupy a large sea area and are severely constrained by factors such as fisheries, ecology, military, and transportation. Therefore, there is an urgent need to design a wind turbine that occupies a smaller sea area. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a new type of offshore multi-bladed wind turbine that can reduce the sea area used, improve power generation efficiency, and extend service life.

[0004] This invention is achieved through the following technical solution: a novel offshore multi-bladed wind turbine, comprising a mounting frame, a support rod, a connecting rod, a yaw device, and a wind turbine. Multiple mounting frames are arranged in an array, each mounting frame having a circular structure. A support rod connects two adjacent vertically aligned mounting frames, and a connecting rod connects two adjacent horizontally aligned mounting frames. Each mounting frame is equipped with a yaw device, and the wind turbine is mounted on the yaw device at the center of the mounting frame. The yaw device drives the wind turbine to rotate along the circumference of the mounting frame.

[0005] Furthermore: the mounting frame has an inner ring with a mounting groove, the yaw device includes a circular yaw track, a crossbeam, and a yaw drive structure, the circular yaw track is set in the mounting groove, the yaw drive structure is set at the connection between the crossbeam and the circular yaw track, and the crossbeam is located on the diameter of the circular yaw track, and the fan is set in the middle position of the crossbeam.

[0006] Furthermore: the yaw drive structure includes a gearbox, a rotating shaft, a yaw gear, a motor, and a drive block. The motor is connected to the gearbox, the gearbox is connected to the rotating shaft, the yaw gear is fixedly mounted on the rotating shaft, the drive block is movably mounted on the rotating shaft, the end of the crossbeam is fixed to the drive block, and the circular yaw track is provided with teeth. The yaw gear meshes with the circular yaw track through the teeth.

[0007] Furthermore, four support rods evenly distributed in a circle are connected between two adjacent vertical mounting frames. Each support rod has the same structure, including an upper support rod and a lower support rod. The upper support rod is movably nested on the lower support rod, and the upper support rod and the lower support rod are driven to move relative to each other by a hydraulic device.

[0008] Furthermore, the hydraulic device includes a hydraulic pump and two hydraulic cylinders. The two hydraulic cylinders are connected to the hydraulic pump via pipes. One hydraulic cylinder is connected to the upper support rod, and the other hydraulic cylinder is connected to the lower support rod.

[0009] Furthermore, two connecting rods are connected between two adjacent mounting brackets in the lateral direction.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. By setting up multiple ring-shaped mounting frames arranged in an array, with support rods connecting two adjacent vertically and connecting rods connecting two adjacent horizontally, and a yaw device installed on each mounting frame, the wind turbine is mounted on the yaw device and positioned at the center of the mounting frame. The yaw device drives the wind turbine to rotate along the circumference of the mounting frame, thus achieving an array arrangement of multiple wind turbines. This effectively reduces the sea area used, by approximately 30% compared to existing methods, thereby reducing the construction area and construction time costs, achieving cost reduction and efficiency improvement. Furthermore, each wind turbine can autonomously yaw according to the wind direction at different altitudes through the yaw device, improving power generation efficiency.

[0012] 2. The fan is mounted at the center of the mounting frame with a circular structure and a yaw device. The mounting frame can protect the fan, improve the structural strength of the fan, and extend the service life of the fan.

[0013] 3. The upper and lower support rods of the support rod are driven to move relative to each other by a hydraulic device, so that the upper support rod retracts or extends the lower support rod, thereby changing the length of the support rod to lower or raise the height of the mounting frame and the wind turbine on the mounting frame. This allows the height of the wind turbine to be adjusted according to the wind speed at sea, preventing excessive local loads caused by excessively high wind speeds at sea and ensuring the overall safety of the wind turbine unit. Attached Figure Description

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

[0015] Figure 2 This is a schematic diagram of the yaw device of the present invention;

[0016] Figure 3 This is a schematic diagram of the support rod of the present invention. Figure 1 ;

[0017] Figure 4 This is a schematic diagram of the support rod of the present invention. Figure 2 .

[0018] Explanation of reference numerals in the attached drawings: 1-Mounting bracket, 2-Support rod, 3-Connecting rod, 4-Yaw device, 5-Fan, 6-Mounting groove, 7-Circular yaw track, 8-Crossbeam, 9-Gearbox, 10-Shaft, 11-Yaw gear, 12-Drive block, 13-Gear, 14-Upper support rod, 15-Lower support rod, 16-Liquid pump, 17-Hydraulic cylinder, 18-Pipeline. Detailed Implementation

[0019] Figures 1 to 4 The present invention provides a schematic diagram of a novel offshore multi-bladed wind turbine embodiment, including a mounting frame 1, a support rod 2, a connecting rod 3, a yaw device 4, and a wind turbine 5. Multiple mounting frames 1 are arranged in an array, each mounting frame 1 having a circular structure. A support rod 2 connects two adjacent vertically aligned mounting frames 1, and a connecting rod 3 connects two adjacent horizontally aligned mounting frames 1. Each mounting frame 1 is equipped with a yaw device 4, and the wind turbine 5 is mounted on the yaw device 4, located at the center of the mounting frame 1. The yaw device 4 drives the wind turbine 5 to rotate along the circumference of the mounting frame 1.

[0020] The mounting bracket 1 has an inner ring with a mounting groove 6. The yaw device 4 includes a circular yaw track 7, a crossbeam 8, and a yaw drive structure. The circular yaw track 7 is set in the mounting groove 6. The yaw drive structure is set at the connection between the crossbeam 8 and the circular yaw track 7. The crossbeam 8 is located on the diameter of the circular yaw track 7. The fan 5 is set in the middle of the crossbeam 8.

[0021] The yaw drive structure includes a gearbox 9, a rotating shaft 10, a yaw gear 11, a motor, and a drive block 12. The motor and the gearbox 9 are connected, and the gearbox 9 is connected to the rotating shaft 10. The yaw gear 11 is fixedly mounted on the rotating shaft 10, and the drive block 12 is movably mounted on the rotating shaft 10. The end of the crossbeam 8 is fixed on the drive block 12. The circular yaw track 7 is provided with teeth 13, and the yaw gear 11 meshes with the circular yaw track 7 through the teeth 13.

[0022] Four support rods 2 are evenly distributed in a circle between two adjacent vertical mounting frames 1. Each support rod 2 has the same structure, including an upper support rod 14 and a lower support rod 15. The upper support rod 14 is movably nested on the lower support rod 15. The upper support rod 14 and the lower support rod 15 are driven to move relative to each other by a hydraulic device.

[0023] The hydraulic device includes a hydraulic pump 16 and two hydraulic cylinders 17. The two hydraulic cylinders 17 are connected to the hydraulic pump 16 through pipes 18. One hydraulic cylinder 17 is connected to the upper support rod 14, and the other hydraulic cylinder 17 is connected to the lower support rod 15.

[0024] Two connecting rods 3 connect two adjacent horizontal mounting brackets 1.

[0025] During operation, when the wind speed exceeds the design wind speed, the controller sends a command to start the hydraulic device. The hydraulic cylinder 17 drives the upper support rod 14 and the lower support rod 15 to move relative to each other, causing the upper support rod 14 to move downward and retract into the lower support rod 15. This reduces the height of the mounting frame 1 and thus the height of the wind turbine 5. This can overcome the excessive local load caused by excessive wind speed at sea, reduce the overall structural height of the wind turbine, and ensure safety.

[0026] When yaw is required, the controller starts the motor. The motor is reduced in speed by the gearbox 9 and drives the yaw gear 11 on the rotating shaft 10 to rotate. This causes the yaw gear 11 to move along the circular yaw track 7. The movement of the yaw gear 11 drives the drive block 12 and the crossbeam 8 to move along the circular yaw track 7, thereby moving the fan 5 on the crossbeam 8 and making the fan 5 yaw.

[0027] The above detailed description is a specific description of feasible embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the present invention should be included in the patent scope of this case.

Claims

1. An offshore multi-bladed wind turbine characterized by: The utility model provides a wind turbine, including mounting frame, support rod, connecting rod, yaw device, fan, mounting frame is provided with a plurality, a plurality of mounting frame is arrayed, every mounting frame is circular ring type structure, vertical two adjacent mounting frame is connected with support rod, horizontal two adjacent mounting frame is connected with connecting rod, every mounting frame is provided with all be provided with yaw device, the fan is set up on yaw device, and the fan is located at the center of mounting frame, yaw device is used for driving fan rotates along the circumferential direction of mounting frame, The inside of the mounting frame is annularly provided with a mounting groove, the yaw device comprises a circular ring yaw track, a cross beam, and a yaw driving structure, the circular ring yaw track is arranged in the mounting groove, the cross beam and the connecting portion of the circular ring yaw track are provided with the yaw driving structure, and the cross beam is located on the diameter of the circular ring yaw track, the fan is arranged at the middle position of the cross beam, The yaw driving structure comprises a gear box, a rotating shaft, a yaw gear, a motor, and a driving block, the motor is connected with the gear box, the gear box is connected with the rotating shaft, the yaw gear is fixedly sleeved on the rotating shaft, the driving block is movably sleeved on the rotating shaft, the end of the cross beam is fixed on the driving block, the circular ring yaw track is provided with a gear tooth, and the yaw gear is engaged with the circular ring yaw track through the gear tooth.

2. A multi-bladed offshore wind turbine generator set as claimed in claim 1, wherein: Vertical two adjacent mounting frames are connected with four support rods which are uniformly distributed in the circumference, each support rod is the same in structure and comprises an upper support rod and a lower support rod, the upper support rod is movably nested on the lower support rod, and the upper support rod and the lower support rod are driven to move relatively by a hydraulic device.

3. A multi-bladed offshore wind turbine generator set as claimed in claim 2, wherein: The hydraulic device comprises a liquid pump and two hydraulic cylinders, the two hydraulic cylinders are connected with the liquid pump through pipelines respectively, one of the hydraulic cylinders is connected with the upper support rod, and the other hydraulic cylinder is connected with the lower support rod.

4. A multi-bladed offshore wind turbine generator set as claimed in claim 3, wherein: Horizontal two adjacent mounting frames are connected with two connecting rods.

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