A centrifugal speed-regulating brake device for a wind turbine

Abstract

The utility model relates to brake device technical field and discloses a centrifugal type speed regulation brake device for wind turbine generator system, including mounting panel and brake disc, the brake disc side passes through and is fixedly connected with rotating shaft, the mounting panel top fixedly connected with oil tank, the mounting panel bottom fixedly connected with mounting support, the mounting support bottom fixedly connected with connecting support, the connecting support top fixedly connected with the fixed end of double -rod hydraulic cylinder, the movable end fixed connection of double -rod hydraulic cylinder has brake mechanism, the part fixed connection of mounting panel top is located oil tank one side has centrifugal governing device, this centrifugal type speed regulation brake device for wind turbine generator system is provided with brake mechanism to can carry out the buffer in alignment while braking the brake disc, avoids the damage of too big vibration to equipment, is provided with centrifugal governing device to can according to the actual operation rotating speed of wind turbine generator, automatically adjusts the brake force.

Description

Technical Field

[0001] This utility model relates to the field of braking device technology, specifically a centrifugal speed regulating braking device for wind turbine generators. Background Technology

[0002] As a core technology for renewable energy utilization, wind power generation relies on a highly efficient and reliable braking system for safe operation. As wind turbines develop towards large megawatts and deep-sea applications, complex operating conditions such as extreme wind speeds and turbulent impacts place stringent demands on the response speed, speed regulation accuracy, and environmental adaptability of braking devices. Wind turbine protection systems must be equipped with at least one mechanical braking device that acts on the low-speed shaft or wind rotor to achieve emergency shutdown in dangerous situations. Centrifugal speed-regulating braking devices, with their purely mechanical triggering characteristics, have become a key backup protection solution for extreme scenarios such as grid power outages and control system failures.

[0003] Existing technologies often cause brake components to loosen or be damaged due to severe equipment vibration during emergency braking, affecting braking performance and potentially causing secondary malfunctions. Furthermore, the speed regulation function of existing braking devices is not precise enough, making it difficult to dynamically adjust according to the actual operating speed of the wind turbine. Utility Model Content

[0004] To solve the above technical problems, this utility model is implemented through the following technical solution: A centrifugal speed regulating braking device for wind turbine generators includes a mounting plate and a brake disc. A rotating shaft is fixedly connected through and to the side of the brake disc. An oil tank is fixedly connected to the top of the mounting plate. A mounting bracket is fixedly connected to the bottom of the mounting plate. A connecting bracket is fixedly connected to the bottom of the mounting bracket. A fixed end of a double-rod hydraulic cylinder is fixedly connected to the top of the connecting bracket. A braking mechanism is fixedly connected to the movable end of the double-rod hydraulic cylinder. An oil pipe is connected to the side of the double-rod hydraulic cylinder. The end of the oil pipe away from the double-rod hydraulic cylinder is connected to the side of the oil tank. Calipers are fixedly connected to both sides of the inner wall of the connecting bracket. The braking mechanism passes through the calipers and is slidably connected to the calipers. The calipers are sleeved on the outside of the brake disc. A fixing ring is sleeved and fixedly connected to the rotating shaft. A centrifugal adjustment device is fixedly connected to the top of the mounting plate on the side of the oil tank. One side of the centrifugal adjustment device is fixedly connected to the fixing ring. A push plate is slidably connected to the inner wall of the oil tank. A piston rod is fixedly connected to one side of the push plate. The piston rod passes through the oil tank and is fixedly connected to one side of the centrifugal adjustment device.

[0005] Preferably, the brake disc has heat dissipation grooves evenly distributed on its side, and heat dissipation plates are fixedly connected to both sides of the inner wall of the heat dissipation grooves. The heat dissipation plates are made of graphene.

[0006] Preferably, the braking mechanism includes a connecting rod, a pressing rod fixedly connected to one side of the connecting rod, a connecting plate fixedly connected to the end of the pressing rod away from the connecting rod, a buffer spring fixedly connected to the side of the connecting plate away from the pressing rod, an elastic telescopic rod fixedly connected to the portion of the side of the connecting plate inside the buffer spring, a friction plate fixedly connected to the end of the elastic telescopic rod away from the connecting plate, and the side of the friction plate fixedly connected to one end of the buffer spring. Multiple sets of buffer springs and elastic telescopic rods are provided and evenly distributed on one side of the connecting plate. The top of the side of the connecting rod is fixedly connected to the movable end of a double-rod hydraulic cylinder. The pressing rod passes through a connecting bracket and is slidably connected to the connecting bracket. The pressing rod passes through a caliper and is slidably connected to the caliper. When the wind turbine needs to brake, the double-rod hydraulic cylinder draws hydraulic oil from the oil tank through an oil pipe, generating pressure to push the movable end to move. The movable end drives the connecting rod, pressing rod, and connecting plate to move. The connecting plate compresses the buffer spring and pushes the elastic telescopic rod. The two work together to make the friction plate evenly and stably fit against the brake disc, achieving braking through friction. At the same time, the heat dissipation groove and graphene heat dissipation plate dissipate the heat generated by braking in a timely manner.

[0007] Preferably, the centrifugal adjustment device includes an adjustment base. A first sliding groove is formed on the top of the adjustment base. A first sliding block is slidably connected to the inner wall of the first sliding groove. Tension springs are fixedly connected to both sides of the first sliding block. The end of each tension spring away from the first sliding block is fixedly connected to the inner wall of the first sliding groove. A fixed rod is fixedly connected to the top of the first sliding block. A sliding ring is fixedly connected to the top of the fixed rod. A second sliding groove is formed on the side of the sliding ring. A second sliding block is slidably connected to the inner wall of the second sliding groove. A first U-shaped frame is fixedly connected to the side of the second sliding block away from the second sliding groove. A rotating frame is rotatably connected to the inner wall of the first U-shaped frame. A second U-shaped frame is rotatably connected to the end of the rotating frame away from the first U-shaped frame. The bottom of the second U-shaped frame is fixedly connected to the fixed rod. The fixed ring is fixedly connected, and the adjusting base is fixedly connected to the top of the mounting plate. The side of the sliding ring is fixedly connected to one end of the piston rod. When the wind turbine is running, the rotating shaft drives the fixed ring and the second U-shaped frame to rotate. The rotating frame drives the first U-shaped frame and the second sliding block to slide along the second slide groove. When the speed is too fast, the centrifugal force causes the rotating frame to unfold, pushing the first U-shaped frame and the second sliding block to move outward, driving the sliding ring to rotate and displace along the fixed rod. Then, the piston rod and the push plate draw out the hydraulic oil in the double-rod hydraulic cylinder, causing the moving end to contract. The friction plate contacts the brake disc to achieve automatic braking. After the speed returns to normal, the tension spring pulls the first sliding block to slide along the first slide groove, driving the fixed rod and the sliding ring to reset. The push plate presses the hydraulic oil back into the double-rod hydraulic cylinder, the braking mechanism is released, and the unit runs normally.

[0008] This utility model provides a centrifugal speed regulating and braking device for wind turbine generators. It has the following beneficial effects:

[0009] 1. This wind turbine uses a centrifugal speed-regulating braking device. The dual-rod hydraulic cylinder drives the friction pads to contact the brake disc via hydraulic power. With the synergistic effect of the buffer spring and elastic telescopic rod, the friction pads can be evenly and stably attached to the brake disc, avoiding the uneven force problem caused by traditional rigid braking. This ensures a smooth braking process, reduces vibration of the wind turbine during braking, and avoids excessive local wear of the friction pads, extending the service life of the braking components. At the same time, a large amount of heat is generated during braking. The heat dissipation grooves and graphene heat dissipation plates can quickly conduct and dissipate the heat, effectively solving the problem of braking performance degradation caused by overheating.

[0010] 2. This wind turbine uses a centrifugal speed regulating and braking device. When the wind turbine speed is too high, the rotating frame unfolds under the action of centrifugal force. Hydraulic oil is drawn through mechanical transmission to drive the braking mechanism to work, realizing automatic braking when the speed exceeds the standard. After the speed returns to normal, the tension spring drives the component to reset, and the hydraulic oil flows back to release the brake. Dynamic adjustment can be completed without manual intervention, so that the braking force can be adjusted in real time to match the speed, which greatly improves the speed regulation accuracy, avoids problems caused by insufficient braking or excessive braking, and enhances the adaptability of the wind turbine in complex wind speed environments. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the centrifugal speed regulating and braking device for wind turbine generators according to this utility model.

[0012] Figure 2 This is a schematic diagram of one side of the brake disc structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the internal connection structure of the fuel tank of this utility model;

[0014] Figure 4 This is a schematic diagram of the connection structure of the braking mechanism of this utility model;

[0015] Figure 5 This is an enlarged structural diagram of point A in this utility model;

[0016] Figure 6 This is a schematic diagram of the connection structure of the centrifugal regulating device of this utility model;

[0017] Figure 7 This is an enlarged structural diagram of section B of the present invention;

[0018] In the diagram: 1. Mounting plate; 2. Brake disc; 3. Rotating shaft; 4. Oil tank; 5. Mounting bracket; 6. Connecting bracket; 7. Double-rod hydraulic cylinder; 8. Braking mechanism; 9. Oil pipe; 10. Caliper; 11. Retaining ring; 12. Centrifugal adjustment device; 13. Push plate; 14. Piston rod; 21. Heat dissipation groove; 22. Heat dissipation plate; 81. Connecting rod; 82. Extrusion rod; 83. Connecting plate; 84. Buffer spring; 85. Elastic telescopic rod; 86. Friction plate; 121. Adjusting base; 122. First slide groove; 123. First sliding block; 124. Tension spring; 125. Fixing rod; 126. Sliding ring; 127. Second slide groove; 128. Second sliding block; 129. First U-shaped frame; 1210. Rotating frame; 1211. Second U-shaped frame. Detailed Implementation

[0019] 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.

[0020] For the first embodiment, please refer to... Figures 1-5This utility model provides a technical solution: a centrifugal speed regulating braking device for wind turbine generators, including a mounting plate 1 and a brake disc 2. A rotating shaft 3 is fixedly connected to the side of the brake disc 2. An oil tank 4 is fixedly connected to the top of the mounting plate 1. A mounting bracket 5 is fixedly connected to the bottom of the mounting plate 1. A connecting bracket 6 is fixedly connected to the bottom of the mounting bracket 5. The fixed end of a double-rod hydraulic cylinder 7 is fixedly connected to the top of the connecting bracket 6. A braking mechanism 8 is fixedly connected to the movable end of the double-rod hydraulic cylinder 7. An oil pipe 9 is connected to the side of the double-rod hydraulic cylinder 7. One end away from the double-rod hydraulic cylinder 7 is connected to one side of the oil tank 4. Calipers 10 are fixedly connected to both sides of the inner wall of the connecting bracket 6. The braking mechanism 8 passes through the calipers 10 and is slidably connected to them. The calipers 10 are sleeved on the outside of the brake disc 2. A retaining ring 11 is sleeved and fixedly connected to the rotating shaft 3. A centrifugal adjustment device 12 is fixedly connected to the top of the mounting plate 1 on one side of the oil tank 4. One side of the centrifugal adjustment device 12 is fixedly connected to the retaining ring 11. A push plate 13 is slidably connected to the inner wall of the oil tank 4. A piston rod 1 is fixedly connected to one side of the push plate 13. 4. The piston rod 14 passes through the oil tank 4 and is fixedly connected to one side of the centrifugal adjustment device 12. The brake disc 2 has evenly spaced heat dissipation grooves 21 on its side. Heat dissipation plates 22 are fixedly connected to both sides of the inner wall of the heat dissipation grooves 21. The heat dissipation plates 22 are made of graphene. The braking mechanism 8 includes a connecting rod 81. A pressing rod 82 is fixedly connected to one side of the connecting rod 81. A connecting plate 83 is fixedly connected to the end of the pressing rod 82 away from the connecting rod 81. A buffer spring 84 is fixedly connected to the side of the connecting plate 83 away from the pressing rod 82. The side of the connecting plate 83 is located at the buffer... A flexible telescopic rod 85 is fixedly connected to a portion inside the spring 84. A friction plate 86 is fixedly connected to the end of the flexible telescopic rod 85 away from the connecting plate 83. The side of the friction plate 86 is fixedly connected to one end of the buffer spring 84. Multiple sets of buffer springs 84 and flexible telescopic rods 85 are provided and evenly distributed on one side of the connecting plate 83. The top side of the connecting rod 81 is fixedly connected to the movable end of the double-rod hydraulic cylinder 7. The pressing rod 82 passes through the connecting bracket 6 and is slidably connected to the connecting bracket 6. The pressing rod 82 passes through the caliper 10 and is slidably connected to the caliper 10.

[0021] When the wind turbine needs to brake, the double-rod hydraulic cylinder 7 draws hydraulic oil from the oil tank 4 through the oil pipe 9, generating pressure to push the movable end to move. The movable end drives the connecting rod 81 to move, and the connecting rod 81 drives the pressing rod 82 to slide within the connecting bracket 6 and the caliper 10. The pressing rod 82 drives the connecting plate 83 to move, and the connecting plate 83 compresses the buffer spring 84 and pushes the elastic telescopic rod 85. The buffer spring 84 and the elastic telescopic rod 85 work together to make the friction plate 86 contact the brake disc 2 evenly and stably. Friction is generated between the friction plate 86 and the brake disc 2 to achieve the braking function. At the same time, the heat dissipation groove 21 and the heat dissipation plate 22 made of graphene can dissipate the heat generated during the braking process in time, avoiding the decrease in braking performance due to overheating.

[0022] For the second embodiment, please refer to... Figures 1-7 Based on the first embodiment, this utility model provides a technical solution: the centrifugal adjusting device 12 includes an adjusting base 121, a first sliding groove 122 is provided on the top of the adjusting base 121, a first sliding block 123 is slidably connected to the inner wall of the first sliding groove 122, tension springs 124 are fixedly connected to both sides of the first sliding block 123, one end of the tension spring 124 away from the first sliding block 123 is fixedly connected to the inner wall of the first sliding groove 122, a fixing rod 125 is fixedly connected to the top of the first sliding block 123, and a sliding ring 126 is fixedly connected to the top of the fixing rod 125. A second sliding groove 127 is provided on the side of the 6. A second sliding block 128 is evenly slidably connected to the inner wall of the second sliding groove 127. A first U-shaped frame 129 is fixedly connected to the side of the second sliding block 128 away from the second sliding groove 127. A rotating frame 1210 is rotatably connected to the inner wall of the first U-shaped frame 129. A second U-shaped frame 1211 is rotatably connected to the end of the rotating frame 1210 away from the first U-shaped frame 129. The bottom of the second U-shaped frame 1211 is fixedly connected to the fixed ring 11. An adjusting base 121 is fixedly connected to the top of the mounting plate 1. The side of the sliding ring 126 is fixedly connected to one end of the piston rod 14.

[0023] In operation, when the wind turbine is running, the rotating shaft 3 drives the fixed ring 11 to rotate, which in turn drives the second U-shaped frame 1211 to rotate. The second U-shaped frame 1211 drives the first U-shaped frame 129 to move via the rotating frame 1210. The first U-shaped frame 129 drives the second sliding block 128 to slide within the second slide groove 127. When the rotation speed is too fast, the centrifugal force causes the rotating frame 1210 to unfold. The rotating frame 1210 pushes the first U-shaped frame 129 and the second sliding block 128 to move outward. While the second sliding block 128 slides within the second slide groove 127, it drives the sliding ring 126 to rotate on the fixed rod 125 and generate outward displacement. The sliding ring 126 drives the piston rod 14 to move. The moving push plate 13 slides within the oil tank 4, drawing out the hydraulic oil originally in the double-rod hydraulic cylinder 7. This causes the movable end of the double-rod hydraulic cylinder 7 to retract, thereby driving the friction plate 86 in the braking mechanism 8 to contact the brake disc 2. This enables the automatic adjustment of braking force based on the rotational speed. When the rotational speed returns to normal, the tension of the tension spring 124 causes the first sliding block 123 to slide within the first sliding groove 122, resetting the fixed rod 125 and the sliding ring 126. The piston rod 14 pushes the push plate 13 to press the hydraulic oil back into the double-rod hydraulic cylinder 7, releasing the braking mechanism 8 and ensuring the normal operation of the wind turbine. This allows for dynamic adjustment based on the actual operating speed of the wind turbine, improving the speed regulation accuracy and response speed of the braking device.

[0024] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A centrifugal speed regulating and braking device for wind turbine generators, characterized in that: The system includes a mounting plate (1) and a brake disc (2). A rotating shaft (3) is fixedly connected to the side of the brake disc (2). An oil tank (4) is fixedly connected to the top of the mounting plate (1). A mounting bracket (5) is fixedly connected to the bottom of the mounting plate (1). A connecting bracket (6) is fixedly connected to the bottom of the mounting bracket (5). The fixed end of a double-rod hydraulic cylinder (7) is fixedly connected to the top of the connecting bracket (6). A braking mechanism (8) is fixedly connected to the movable end of the double-rod hydraulic cylinder (7). An oil pipe (9) is connected to the side of the double-rod hydraulic cylinder (7). The end of the oil pipe (9) away from the double-rod hydraulic cylinder (7) is connected to one side of the oil tank (4). Both sides of the inner wall of the connecting bracket (6) are... A caliper (10) is fixedly connected. The braking mechanism (8) passes through the caliper (10) and is slidably connected to the caliper (10). The caliper (10) is sleeved on the outside of the brake disc (2). A fixing ring (11) is sleeved on and fixedly connected to the rotating shaft (3). A centrifugal adjustment device (12) is fixedly connected to the top of the mounting plate (1) on one side of the oil tank (4). One side of the centrifugal adjustment device (12) is fixedly connected to the fixing ring (11). A push plate (13) is slidably connected to the inner wall of the oil tank (4). A piston rod (14) is fixedly connected to one side of the push plate (13). The piston rod (14) passes through the oil tank (4) and is fixedly connected to one side of the centrifugal adjustment device (12).

2. The centrifugal speed regulating and braking device for wind turbine generators according to claim 1, characterized in that: The brake disc (2) has heat dissipation grooves (21) evenly distributed on its side. Heat dissipation plates (22) are fixedly connected to both sides of the inner wall of the heat dissipation grooves (21). The heat dissipation plates (22) are made of graphene.

3. The centrifugal speed regulating and braking device for wind turbine generators according to claim 1, characterized in that: The braking mechanism (8) includes a connecting rod (81), a pressing rod (82) is fixedly connected to one side of the connecting rod (81), a connecting plate (83) is fixedly connected to the end of the pressing rod (82) away from the connecting rod (81), a buffer spring (84) is fixedly connected to the side of the connecting plate (83) away from the pressing rod (82), an elastic telescopic rod (85) is fixedly connected to the part of the side of the connecting plate (83) located inside the buffer spring (84), a friction plate (86) is fixedly connected to the end of the elastic telescopic rod (85) away from the connecting plate (83), and the side of the friction plate (86) is fixedly connected to one end of the buffer spring (84). The buffer spring (84) and the elastic telescopic rod (85) are provided in multiple sets and evenly distributed on one side of the connecting plate (83).

4. A centrifugal speed regulating and braking device for wind turbine generators according to claim 3, characterized in that: The top side of the connecting rod (81) is fixedly connected to the movable end of the double-rod hydraulic cylinder (7), the extrusion rod (82) passes through the connecting bracket (6) and is slidably connected to the connecting bracket (6), and the extrusion rod (82) passes through the caliper (10) and is slidably connected to the caliper (10).

5. A centrifugal speed regulating and braking device for wind turbine generators according to claim 1, characterized in that: The centrifugal adjustment device (12) includes an adjustment base (121), the top of which is provided with a first slide groove (122). A first sliding block (123) is slidably connected to the inner wall of the first slide groove (122). Tension springs (124) are fixedly connected to both sides of the first sliding block (123). The end of the tension spring (124) away from the first sliding block (123) is fixedly connected to the inner wall of the first slide groove (122). A fixing rod (125) is fixedly connected to the top of the first sliding block (123). 5) A sliding ring (126) is fixedly connected to the top. A second sliding groove (127) is provided on the side of the sliding ring (126). A second sliding block (128) is evenly slidably connected to the inner wall of the second sliding groove (127). A first U-shaped frame (129) is fixedly connected to the side of the second sliding block (128) away from the second sliding groove (127). A rotating frame (1210) is rotatably connected to the inner wall of the first U-shaped frame (129). A second U-shaped frame (1211) is rotatably connected to the end of the rotating frame (1210) away from the first U-shaped frame (129).

6. A centrifugal speed regulating and braking device for wind turbine generators according to claim 5, characterized in that: The bottom of the second U-shaped frame (1211) is fixedly connected to the fixed ring (11), the adjusting base (121) is fixedly connected to the top of the mounting plate (1), and the side of the sliding ring (126) is fixedly connected to one end of the piston rod (14).

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