Attitude adjusting device for offshore wind turbine

Abstract

The utility model discloses a posture adjusting device for an offshore wind power generator, which comprises a jacking mechanism arranged in an upper tower of a wind power generation pile, a movable column is connected onto the jacking mechanism, the jacking mechanism is used for driving the movable column to move up and down, and a rotating mechanism is further arranged in the upper tower below the jacking mechanism. The rotating mechanism is connected to the movable column and drives the movable column to rotate.

Description

Technical Field

[0001] The utility model relates to a device for adjusting the posture of an offshore wind turbine generator. Background Art

[0002] Wind power is a renewable, clean energy source with good economic efficiency. The wind power industry is also developing rapidly around the world. Onshore wind power generation started earlier, and with the development of the wind power industry, offshore wind power generation is also becoming more and more prosperous. The wind resources at sea are richer than those on land, but the challenges faced by offshore wind power generation are more severe than those on land. For example, first, the wind direction at sea often changes with the seasons, and is also affected by various cyclones, resulting in variable wind direction; second, the weather conditions at sea are much worse than on land, and the maintenance is more difficult, so the risk resistance requirements for wind turbines are also higher.

[0003] Faced with these problems, currently neither offshore nor land-based wind turbines are able to adjust their posture in a timely manner to cope with environmental changes.

[0004] Therefore, how to overcome the above-mentioned defects has become an important issue to be solved urgently by those skilled in the art. Utility Model Content

[0005] The utility model overcomes the shortcomings of the above-mentioned technology and provides an offshore wind turbine attitude adjustment device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for adjusting the posture of an offshore wind turbine comprises a lifting mechanism 1 arranged in a tower frame on a wind power generation pile, a movable column 3 is connected to the lifting mechanism 1, the lifting mechanism 1 is used to drive the movable column 3 to move up and down, and a rotating mechanism 2 is also arranged in an upper tower frame below the lifting mechanism 1, the rotating mechanism 2 is connected to the movable column 3 and drives the movable column 3 to rotate.

[0008] Preferably, the lifting mechanism 1 includes a support plate 11, and a plurality of first driving cylinders 12 for driving the support plate 11 to move up and down in the upper tower are connected between the bottom of the support plate 11 and the upper tower. The upper surface of the support plate 11 is connected to a rotating plate 14 through a first plane bearing 13, and the movable column 3 is fixed on the rotating plate 14.

[0009] Preferably, a plurality of linear telescopic rods 15 are connected between the bottom of the support plate 11 and the upper tower.

[0010] Preferably, the diameter of the rotating plate 14 is greater than the diameter of the movable column 3 , and a plurality of support rods 16 are connected between the side surface of the movable column 3 and the upper surface of the rotating plate 14 , and the support rods 16 are evenly distributed around the side surface of the movable column 3 .

[0011] Preferably, the rotating mechanism 2 includes a second driving cylinder 21 fixed in the upper tower, the second driving cylinder 21 drives an inner transmission shaft 22 that moves axially up and down, a second plane bearing 210 is provided between the second driving cylinder 21 and the inner transmission shaft 22, a first transmission pin 23 perpendicular to the inner transmission shaft 22 is passed through the top of the inner transmission shaft 22, the support plate 11 and the rotating plate 14 are both provided with a through hole 17 coaxially arranged with the first plane bearing 13 for the inner transmission shaft 22 and the first transmission pin 23 to pass through, and a through hole 17 is provided at the bottom of the movable column 3 for the end of the inner transmission shaft 22 and the first transmission pin 23 to move upward into position An inverted T-shaped groove 31 is embedded therein, an outer transmission shaft 24 is sleeved on the outer side of the inner transmission shaft 22, and a second transmission pin 25 perpendicular to the inner transmission shaft 22 is also pierced through the lower end of the inner transmission shaft 22, and a square transmission groove 241 extending along the axial direction is provided in the outer transmission shaft 24, and the square transmission groove 241 is used for the second transmission pin 25 to be embedded therein and move up and down relative to the outer transmission shaft 24, and the rotating mechanism 2 also includes a rotating motor 26, and the rotating motor 26 is driven and connected to a driving gear 28 through a reducer 27, and a driven gear 29 meshing with the driving gear 28 is fixed on the outer side of the outer transmission shaft 24.

[0012] Preferably, a pressure sensor is provided in the inverted T-shaped groove 31 .

[0013] Preferably, the attitude adjustment device also includes a wind direction detector arranged at the nacelle of the wind turbine.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The attitude adjustment device in this case can drive the movable column to move up and down and rotate respectively through the jacking mechanism and the rotating mechanism installed in the upper tower, and the upper end of the movable column is used to fix the wind turbine cabin. In this way, the movable column can be driven up and down by the jacking mechanism, and then the wind turbine cabin can be driven up and down. By changing the height of the wind turbine cabin, various types of extreme weather can be better avoided, thereby improving the risk resistance of wind power generation facilities in harsh environments. In addition, the attitude adjustment device in this case can also drive the movable column to rotate through the rotating mechanism, and then drive the wind turbine cabin to rotate. By rotating and changing the direction of the wind turbine cabin, the wind turbine can better adapt to wind from different directions, thereby further improving the utilization efficiency of wind energy.

[0016] 2. The lifting mechanism and rotating mechanism of the attitude adjustment device in this case are both arranged in the upper tower, which is the closest position to the wind turbine cabin. This can effectively reduce the maximum output power of the lifting mechanism and the rotating mechanism when they are working, and save energy to the greatest extent while achieving height and angle adjustment. Moreover, the upper tower is far away from the sea surface, which can also prevent the lifting mechanism and the rotating mechanism from being corroded by seawater waves.

[0017] 3. The rotating mechanism in this case drives the inner transmission shaft to move up and down through the second driving cylinder to ensure that no matter what height the movable column is at, the inner transmission shaft and the first transmission pin can be embedded in the inverted T-shaped groove to complete the torque transmission connection. The cooperation of the square transmission groove and the second transmission pin can ensure that no matter where the inner transmission shaft moves up and down, the torque output from the rotating motor can be finally transmitted to the inner transmission shaft through the reducer, the driving gear, the driven gear, the outer transmission shaft, and the second transmission pin. In this way, it can be ensured that the lifting mechanism and the rotating mechanism can work independently without complementary interference, so that the attitude adjustment device in this case can more flexibly adjust the attitude of the wind turbine cabin according to environmental changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is one of the schematic diagrams of the posture adjustment device in this case.

[0019] Figure 2 This is the second schematic diagram of the posture adjustment device in this case.

[0020] Figure 3 It is one of the cross-sectional schematic diagrams of the posture adjustment device of this case, in which the inner transmission shaft and the first transmission pin are embedded in the inverted T-shaped groove.

[0021] Figure 4 It is one of the cross-sectional schematic diagrams of the posture adjustment device of this case, in which the inner transmission shaft and the first transmission pin are disengaged from the inverted T-shaped groove.

[0022] Figure 5 It is a bottom-up schematic diagram of the jacking mechanism of this case.

[0023] Figure 6 It is a bottom view schematic diagram of the rotating mechanism of this case. DETAILED DESCRIPTION

[0024] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0025] like Figures 1 to 6As shown, an offshore wind turbine attitude adjustment device includes a jacking mechanism 1 arranged in a tower frame on a wind power generation pile, a movable column 3 is connected to the jacking mechanism 1, and the jacking mechanism 1 is used to drive the movable column 3 to move up and down. A rotating mechanism 2 is also arranged in the upper tower frame below the jacking mechanism 1, and the rotating mechanism 2 is connected to the movable column 3 and drives the movable column 3 to rotate.

[0026] The upper end of the movable column 3 is used for fixing the nacelle of the wind turbine generator thereon.

[0027] An offshore wind power pile generally includes a pile column fixed on the sea, the upper end of the pile column is connected to a lower tower frame, and the upper end of the lower tower frame is connected to an upper tower frame for fixing a nacelle of a wind turbine.

[0028] As described above, the attitude adjustment device of this case can drive the movable column 3 to move up and down and rotate respectively through the jacking mechanism 1 and the rotating mechanism 2 installed in the upper tower, and the upper end of the movable column 3 is used to fix the wind turbine cabin. In this way, the movable column 3 can be driven to rise and fall by the jacking mechanism 1, and then the wind turbine cabin can be driven to rise and fall. By changing the height of the wind turbine cabin, various types of extreme weather can be better avoided, thereby improving the risk resistance of wind power generation facilities in the face of harsh environments. In addition, the attitude adjustment device of this case can also drive the movable column 3 to rotate through the rotating mechanism 2, and then drive the wind turbine cabin to rotate. The rotating mechanism 2 is arranged in the upper tower, which is the closest position to the wind turbine cabin. This can effectively reduce the maximum output power of the jacking mechanism 1 and the rotating mechanism 2 when working, and save energy to the greatest extent while achieving height and angle adjustment. Moreover, the upper tower is far away from the sea surface, which can also prevent the jacking mechanism 1 and the rotating mechanism 2 from being corroded by seawater surges.

[0029] like Figures 1 to 5 As shown, preferably, the jacking mechanism 1 includes a support plate 11, and a plurality of first driving cylinders 12 for driving the support plate 11 to move up and down in the upper tower are connected between the bottom of the support plate 11 and the upper tower, and the upper surface of the support plate 11 is connected to a rotating plate 14 through a first plane bearing 13, and the movable column 3 is fixed on the rotating plate 14.

[0030] As described above, when the height of the wind turbine cabin needs to be adjusted, the jacking mechanism 1 of the present invention can lift or lower the support plate 11 through the action of the first driving cylinder 12, so that the movable column 3 will drive the wind turbine cabin to move up and down. In addition, since the movable column 3 is fixed on the rotating plate 14, and the rotating plate 14 and the support plate 11 are connected through the first plane bearing 13, the movable column 3 can rotate relative to the support plate 11, so that the rotating mechanism 2 can drive the movable column 3 to rotate without affecting the fixation of the jacking mechanism 1, and the first plane bearing 13 can also effectively reduce the torque required to drive the movable column 3 to rotate.

[0031] like Figures 1 to 4 As shown, preferably, a plurality of linear telescopic rods 15 are connected between the bottom of the support plate 11 and the upper tower frame, so that the stability of the support plate 11 when moving up and down can be further improved by the linear telescopic rods 15.

[0032] like Figures 1 to 4 As shown, preferably, the diameter of the rotating plate 14 is larger than the diameter of the movable column 3, and a plurality of support rods 16 are connected between the side surface of the movable column 3 and the upper surface of the rotating plate 14, and the support rods 16 are evenly distributed circumferentially around the side surface of the movable column 3. In this way, by arranging the support rods 16 between the movable column 3 and the rotating plate 14, the stability of the movable column 3 during rotation can be effectively improved.

[0033] like Figures 1 to 6 As shown, preferably, the rotating mechanism 2 includes a second driving cylinder 21 fixed in the upper tower, the second driving cylinder 21 drives and connects an inner transmission shaft 22 that moves axially up and down, a second plane bearing 210 is provided between the second driving cylinder 21 and the inner transmission shaft 22, a first transmission pin 23 perpendicular to the inner transmission shaft 22 is penetrated through the top of the inner transmission shaft 22, the support plate 11 and the rotating plate 14 are both provided with a through hole 17 coaxially arranged with the first plane bearing 13 for the inner transmission shaft 22 and the first transmission pin 23 to pass through, and a through hole 17 is provided at the bottom of the movable column 3 for the end of the inner transmission shaft 22 and the first transmission pin 23 to move upward An inverted T-shaped groove 31 is embedded in the rear position, an outer transmission shaft 24 is sleeved on the outer side of the inner transmission shaft 22, and a second transmission pin 25 perpendicular to the inner transmission shaft 22 is also pierced through the lower end of the inner transmission shaft 22, and a square transmission groove 241 extending along the axial direction is provided in the outer transmission shaft 24, and the square transmission groove 241 is used for the second transmission pin 25 to be embedded therein and move up and down relative to the outer transmission shaft 24, the rotating mechanism 2 also includes a rotating motor 26, and the rotating motor 26 is driven and connected to a driving gear 28 through a reducer 27, and a driven gear 29 meshing with the driving gear 28 is fixed on the outer side of the outer transmission shaft 24.

[0034] As described above, when the orientation of the wind turbine nacelle needs to be adjusted, the second driving cylinder 21 will be actuated to drive the inner transmission shaft 22 to rise. When the inner transmission shaft 22 rises, it will pass through the support plate 11, the first plane bearing 13 and the rotating plate 14 together with the first transmission pin 23. Then, the top of the inner transmission shaft 22 and the first transmission pin 23 will be embedded in the inverted T-shaped groove 31 at the bottom of the movable column 3, thus completing the torque transmission connection between the inner transmission shaft 22 and the movable column 3. After that, the rotating motor 26 will start and drive the driving gear 28 to rotate through the reducer 27. Driven by the driving gear 28, the driven gear 29 fixed on the outer transmission shaft 24 will also rotate accordingly. The outer transmission shaft 24 will transmit the torque to the inner transmission shaft 22 through the square transmission groove 241 and the second transmission pin 25, so that the movable column 3 can be driven to rotate through the inner transmission shaft 22.

[0035] The rotating mechanism 2 in this case drives the inner transmission shaft 22 to move up and down through the second driving cylinder 21, which can ensure that no matter where the movable column 3 is at any height, the inner transmission shaft 22 and the first transmission pin 23 can be embedded in the inverted T-shaped groove 31 to complete the torque transmission connection. The cooperation of the square transmission groove 241 and the second transmission pin 25 can ensure that no matter where the inner transmission shaft 22 moves up and down, the torque output from the rotating motor 26 can be finally transmitted to the inner transmission shaft 22 through the reducer 27, the driving gear 28, the driven gear 29, the outer transmission shaft 24, and the second transmission pin 25. In this way, it can be ensured that the lifting mechanism 1 and the rotating mechanism 2 can work independently with complementary interference, so that the attitude adjustment device in this case can more flexibly adjust the attitude of the wind turbine cabin according to environmental changes.

[0036] Preferably, a pressure sensor is provided in the inverted T-shaped groove 31, so that when the inner transmission shaft 22 and the first transmission pin 23 rise into place, the pressure sensor will be triggered, so that the action of the second driving cylinder 21 can be more accurately controlled by the signal of the pressure sensor.

[0037] Preferably, the attitude adjustment device also includes a wind direction detector arranged at the wind turbine nacelle, so that the movement of the rotating mechanism 2 can be more accurately controlled through the detection data of the wind direction detector, so that the wind turbine nacelle can be oriented in the direction of maximizing power generation efficiency.

[0038] As mentioned above, this case protects an offshore wind turbine attitude adjustment device, and all technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.

Claims

1. An offshore wind turbine attitude adjustment device, characterized in that The invention comprises a lifting mechanism (1) arranged in an upper tower frame of a wind power generation pile, a movable column (3) being connected to the lifting mechanism (1), the lifting mechanism (1) being used to drive the movable column (3) to move up and down, and a rotating mechanism (2) being arranged in an upper tower frame below the lifting mechanism (1), the rotating mechanism (2) being connected to the movable column (3) and driving the movable column (3) to rotate.

2. The offshore wind turbine attitude adjustment device according to claim 1, characterized in that The lifting mechanism (1) comprises a support plate (11), a plurality of first driving cylinders (12) for driving the support plate (11) to move up and down in the upper tower are connected between the bottom of the support plate (11) and the upper tower, the upper surface of the support plate (11) is connected to a rotating plate (14) via a first plane bearing (13), and the movable column (3) is fixed on the rotating plate (14).

3. The offshore wind turbine attitude adjustment device according to claim 2 is characterized in that A plurality of linear telescopic rods (15) are also connected between the bottom of the support plate (11) and the upper tower.

4. The offshore wind turbine attitude adjustment device according to claim 2 is characterized in that The diameter of the rotating plate (14) is greater than the diameter of the movable column (3); a plurality of support rods (16) are connected between the side surface of the movable column (3) and the upper surface of the rotating plate (14); the support rods (16) are evenly distributed around the side surface of the movable column (3).

5. The offshore wind turbine attitude adjustment device according to claim 2, characterized in that The rotating mechanism (2) comprises a second driving cylinder (21) fixed in the upper tower, the second driving cylinder (21) drivingly connected to an inner transmission shaft (22) that moves axially up and down, a second plane bearing (210) is provided between the second driving cylinder (21) and the inner transmission shaft (22), a first transmission pin (23) perpendicular to the inner transmission shaft (22) is passed through the top of the inner transmission shaft (22), the support plate (11) and the rotating plate (14) are both provided with a through hole (17) coaxially arranged with the first plane bearing (13) for the inner transmission shaft (22) and the first transmission pin (23) to pass through, and a bottom of the movable column (3) is provided for the end of the inner transmission shaft (22) and the first transmission pin (23) to be inserted into after moving upward into position The inverted T-shaped groove (31) is provided with an outer transmission shaft (24) on the outer side of the inner transmission shaft (22), and a second transmission pin (25) perpendicular to the inner transmission shaft (22) is also penetrated through the lower end of the inner transmission shaft (22). The outer transmission shaft (24) is provided with a square transmission groove (241) extending along the axial direction, and the square transmission groove (241) is used for the second transmission pin (25) to be embedded therein and move up and down relative to the outer transmission shaft (24). The rotating mechanism (2) also includes a rotating motor (26), and the rotating motor (26) is connected to a driving gear (28) through a speed reducer (27). A driven gear (29) meshing with the driving gear (28) is fixed on the outer side of the outer transmission shaft (24).

6. The offshore wind turbine attitude adjustment device according to claim 5, characterized in that A pressure sensor is arranged in the inverted T-shaped groove (31).

7. The offshore wind turbine attitude adjustment device according to claim 1, characterized in that It also includes a wind direction detector arranged at the nacelle of the wind turbine generator.

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