A wind power generator anti-tripping device

Abstract

This utility model relates to the field of wind turbine technology and discloses a wind turbine anti-tripping device. During wind turbine operation, the controller continuously monitors relevant operating parameters. When an abnormality is detected, the controller sends a command to the electromagnetic push rod in the anti-tripping assembly. The extension and retraction of the electromagnetic push rod, along with the transmission of power to the power shunt gearbox via a nitrile rubber coupling, also buffers vibration and impact between the electromagnetic push rod and the power shunt gearbox. The power shunt gearbox then performs power shunt and speed change processing, transmitting power to the mechanical shaft of the switch via an alloy connecting rod at its output end. This causes the switch to perform corresponding actions, such as adjusting the circuit connection status, thereby preventing the wind turbine from tripping due to abnormal conditions. Furthermore, since the input shaft of the power shunt gearbox is equipped with a torque limiter, damage caused by excessive torque can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a wind turbine anti-tripping device. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current. Because wind energy itself is not very stable, wind turbines are prone to tripping high-voltage lines due to wind speed fluctuations, voltage surges, and other factors during operation. This not only affects the continuity of power generation but may also cause potential damage to the equipment.

[0003] Chinese Patent Publication No. CN217692202U discloses a protective device for wind turbines to prevent high-voltage line tripping. The device includes a housing, a fixing plate, several sets of controllers and switches. The lower front end of the controllers is equipped with a reset device. The housing is also equipped with a grounding device and a lightning protection device. Therefore, through the lightning protection wire, part of the lightning current flows to the adjacent tower, and the other part of the lightning current flows to the ground through the tower and through the ground wire. When the data displayed by the electricity meter is abnormal, the wire can divert the excess current of the controller to the ground, thereby improving the protective effect of the device.

[0004] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: some existing tripping devices focus on taking measures after a fault occurs, lacking proactive adjustment to reduce the possibility of tripping from the source. At the same time, there are also shortcomings in the coordination between power regulation and anti-tripping functions, making it difficult to ensure the stable operation of the wind turbine under complex operating conditions. Utility Model Content

[0005] To address the drawbacks of tripping measures, we propose a wind turbine anti-tripping device.

[0006] To achieve the above objectives, this application adopts the following technical solution: a wind turbine anti-tripping device, comprising: a housing, and cavities A and B disposed inside the housing, wherein a controller and a switch are disposed inside cavity A, and an anti-tripping component is disposed inside cavity B. The anti-tripping assembly includes a metal partition between cavity A and cavity B, and an electromagnetic push rod inside cavity B. The telescopic end of the electromagnetic push rod is connected to a power shunt gearbox via a nitrile rubber coupling. The output end of the power shunt gearbox is connected to the mechanical shaft of the switch via an alloy connecting rod. The input shaft of the power shunt gearbox is fitted with a torque limiter. After the power shunt gearbox shunts and changes the speed of the input power, it pushes the mechanical shaft of the switch via the alloy connecting rod, causing the switch to operate and thus controlling the circuit to prevent the wind turbine from tripping due to abnormal conditions.

[0007] Preferably, a mounting bracket is fixedly installed inside cavity A by bolts, and a rubber shock-absorbing pad is provided on the upper surface of the mounting bracket. The controller is installed on the upper surface of the mounting bracket by anti-loosening bolts. The mounting bracket and the rubber shock-absorbing pad can improve the stability of the controller's operation.

[0008] Preferably, cavity B has an inlet port, and a power sensor is installed inside the inlet port. The power sensor is electrically connected to the controller through a shielded cable. The power sensor monitors the power entering the device in real time and transmits the signal to the controller through the shielded cable.

[0009] Preferably, a lightning rod is installed on the upper surface of the enclosure. The lightning rod is connected to the ground through a grounding lead. A lightning surge detector is installed at the incoming port. The lightning surge detector is connected to the controller signal. The lightning rod and the grounding lead can conduct current to the ground to prevent the equipment from being struck by lightning and reduce the risk of tripping. At the same time, the lightning surge detector can also detect whether there is a lightning surge signal and transmit the signal to the controller so as to take action to push the switch.

[0010] Preferably, a hinged door is provided on one side of the enclosure, and a viewing window is provided on one side of the door. The door facilitates future maintenance, and the viewing window allows for direct observation of the interior of the enclosure.

[0011] Preferably, the outer surface of the movable door is provided with a heat dissipation vent, and a dustproof net is installed inside the heat dissipation vent. An axial flow fan is installed on one side of the dustproof net and is located inside the housing. After the axial flow fan is started, it can exhaust the hot air inside the equipment. The dustproof net can reduce the dust brought in by the air entering, thereby avoiding tripping caused by overheating inside the housing.

[0012] The technical effects and advantages of this utility model are as follows: In this invention, the controller continuously monitors relevant operating parameters during wind turbine operation. When an abnormality is detected, the controller sends a command to the electromagnetic push rod in the anti-trip assembly. The extension and retraction of the electromagnetic push rod, along with the nitrile rubber coupling, transmits power to the power shunt gearbox. The nitrile rubber coupling also buffers vibrations and impacts between the electromagnetic push rod and the power shunt gearbox. The power shunt gearbox then performs power shunt and speed regulation, transmitting the power to the mechanical shaft of the switch via an alloy connecting rod at its output end. This causes the switch to perform corresponding actions, such as adjusting the circuit connection, thereby preventing the wind turbine from tripping due to abnormal conditions. Furthermore, because the input shaft of the power shunt gearbox is equipped with a torque limiter, damage caused by excessive torque can be prevented. Attached Figure Description

[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of the box of this utility model; Figure 4 This is a partial structural schematic diagram of the present invention.

[0014] Legend: 1. Enclosure; 11. Heat dissipation vent; 12. Dustproof net; 13. Axial flow fan; 2. Cavity A; 3. Cavity B; 31. Inlet port; 32. Power sensor; 4. Controller; 5. Switch; 6. Anti-trip component; 61. Metal partition; 62. Electromagnetic push rod; 63. Nitrile rubber coupling; 64. Power shunt gearbox; 65. Alloy connecting rod; 66. Torque limiter; 7. Mounting bracket; 71. Rubber shock absorber; 8. Lightning rod; 81. Grounding lead; 82. Lightning surge detector; 9. Movable door; 91. Viewing window. Detailed Implementation

[0015] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0016] Reference Figure 1 As shown, this utility model provides a technical solution: a wind turbine anti-tripping device, including: a housing 1, and cavities A2 and B3 disposed inside the housing 1, thereby placing the controller 4, switch 5 and anti-tripping component 6 in different cavities, which helps to clearly define the functional areas, reduce mutual interference, and thus effectively improve the operational stability of the equipment.

[0017] Reference Figures 1-4As shown in this embodiment: a metal partition 61 is set between cavity A2 and cavity B3. Therefore, interference between components in cavity B3 can be prevented, such as preventing electromagnetic interference from affecting the normal operation of controller 4 and switch 5. Then, when an abnormal situation occurs during the operation of the wind turbine, controller 4, according to a preset threshold, causes electromagnetic push rod 62 to start its extension and retraction action, and drives power shunt gearbox 64 to operate through nitrile rubber coupling 63. After the power shunt gearbox 64 shunts and changes the speed of the input power, it pushes the mechanical shaft of switch 5 through alloy connecting rod 65, causing switch 5 to operate, thereby realizing the control of the circuit and preventing the wind turbine from tripping due to abnormal conditions. For example, when a sudden excessive power is detected, which may cause the generator to overload and trip, the above operation enables switch 5 to cut off the circuit in time and protect the generator.

[0018] The cavity A2 is fitted with a mounting bracket 7 by bolts. The upper surface of the mounting bracket 7 is provided with rubber shock-absorbing pads 71 ​​to reduce the transmission of external vibrations to the controller 4. The controller 4 is mounted on the upper surface of the mounting bracket 7 by anti-loosening bolts to ensure a firm installation, thereby effectively reducing the impact of vibration on the precision electronic components inside the controller 4 and improving the stability of the controller 4's operation.

[0019] The cavity B3 has an inlet port 31 inside, and a power sensor 32 is installed inside the inlet port 31 to monitor the power entering the device in real time. The power sensor 32 is electrically connected to the controller 4 through a shielded cable, which enables the controller 4 to detect abnormal power in a timely manner and take corresponding measures. The shielded cable can effectively reduce interference during signal transmission.

[0020] A lightning rod 8 is installed on the upper surface of the enclosure 1. The lightning rod 8 is connected to the ground through a grounding lead 81. During thunderstorms, the lightning is guided to itself and the current is introduced into the ground through the grounding lead 81 to prevent the equipment from being struck by lightning. A lightning surge detector 82 is installed at the incoming port 31 to detect whether there is a lightning surge signal, so as to detect the lightning surge in time. The lightning surge detector 82 is connected to the controller 4, so that the controller 4 can take countermeasures in advance, such as controlling the switch 5 to cut off the circuit and protect the equipment from lightning damage.

[0021] A hinged door 9 is provided on one side of the enclosure 1, which facilitates maintenance personnel to enter the enclosure 1 for equipment inspection and maintenance. A viewing window 91 is provided on one side of the hinged door 9, which allows for observation of the internal equipment operation without opening the hinged door 9.

[0022] The outer surface of the movable door 9 is provided with a heat dissipation vent 11. The hot air generated by the equipment is discharged from the housing 1 through the heat dissipation vent 11. A dustproof net 12 is installed inside the heat dissipation vent 11. An axial flow fan 13 is installed on one side of the dustproof net 12. The axial flow fan 13 is located inside the housing 1. The axial flow fan 13 draws cold air from outside into the housing 1. After the dust is filtered by the dustproof net 12, the heat dissipation effect is improved, and tripping caused by overheating inside the housing 1 is avoided.

[0023] Working Principle: When the wind turbine is running, the controller 4 continuously monitors relevant operating parameters. For example, it monitors the power entering the equipment in real time through the power sensor 32 at the incoming port 31, and the lightning surge detector 82 detects whether there is a lightning surge signal. When an abnormal situation that may cause a trip is detected, such as power overload or voltage instability, the controller 4 sends an action command to the electromagnetic push rod 62 in the anti-trip component 6. Then, through the extension and retraction of the electromagnetic push rod 62, power is transmitted to the power shunt gearbox 64 through the nitrile rubber coupling 63. At the same time, the nitrile rubber coupling 63 not only serves as a connection, but also buffers the vibration and impact between the electromagnetic push rod 62 and the power shunt gearbox 64, compensating for a certain amount of vibration. The shaft misalignment is then addressed. After receiving power, the power split gearbox 64 splits and changes speed, then transmits the power to the mechanical shaft of switch 5 via alloy connecting rod 65 at its output end, causing switch 5 to perform corresponding actions, such as timely disconnection. Furthermore, since the input shaft of the power split gearbox 64 is equipped with a torque limiter 66, when the torque exceeds a set threshold, the torque limiter 66 will cut off power transmission, preventing excessive torque from damaging the components of the entire device and ensuring safe operation. Additionally, the metal partition 61 between cavity A2 and cavity B3 reduces electromagnetic interference between the two cavities, ensuring stable operation of controller 4, switch 5, and anti-trip component 6, and improving the reliability of device operation. Finally, the movable door 9 on one side of the enclosure 1 facilitates maintenance personnel to enter the enclosure 1 for equipment inspection and maintenance. The viewing window 91 on its upper surface allows for observation of the internal equipment operation without opening the movable door 9. In addition, the outer surface of the movable door 9 is provided with a heat dissipation vent 11, as well as a dustproof net 12 and an axial flow fan 13 at the heat dissipation vent 11, which can improve the heat dissipation effect and prevent tripping caused by overheating inside the enclosure 1.

[0024] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A wind turbine anti-tripping device, characterized in that: It includes a housing, and cavities A and B disposed inside the housing. A controller and a switch are disposed inside cavity A, and an anti-tripping component is disposed inside cavity B. The anti-tripping assembly includes a metal partition between cavity A and cavity B, and an electromagnetic push rod disposed inside cavity B. The telescopic end of the electromagnetic push rod is connected to a power shunt gearbox via a nitrile rubber coupling. The output end of the power shunt gearbox is connected to the mechanical shaft of the switch via an alloy connecting rod. The input shaft of the power shunt gearbox is fitted with a torque limiter.

2. The wind turbine anti-tripping device according to claim 1, characterized in that: The cavity A is fitted with a mounting bracket by bolts. The upper surface of the mounting bracket is provided with rubber shock-absorbing pads. The controller is mounted on the upper surface of the mounting bracket by anti-loosening bolts.

3. The wind turbine anti-tripping device according to claim 1, characterized in that: The cavity B has an inlet port, and a power sensor is installed inside the inlet port. The power sensor is electrically connected to the controller via a shielded cable.

4. The wind turbine anti-tripping device according to claim 3, characterized in that: A lightning rod is installed on the upper surface of the enclosure. The lightning rod is connected to the ground through a grounding lead. A lightning surge detector is installed at the incoming port. The lightning surge detector is connected to the controller signal.

5. The wind turbine anti-tripping device according to claim 1, characterized in that: A hinged door is connected to one side of the housing, and a viewing window is provided on one side of the hinged door.

6. The wind turbine generator anti-tripping device according to claim 5, characterized in that: The outer surface of the movable door is provided with a heat dissipation vent, and a dustproof net is installed inside the heat dissipation vent. An axial flow fan is installed on one side of the dustproof net, and the axial flow fan is located inside the housing.

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