An auxiliary device for locking the rotor of a wind turbine

Abstract

The utility model relates to fan maintenance technical field discloses a kind of auxiliary devices of wind turbine locking wind wheel, including laser sensor, switching circuit, indicating device and power supply;Laser sensor is arranged on the bearing seat with locking pin, and located the upside or downside of locking pin;Switching circuit includes first connecting end, second connecting end and controlled end, and the signal output end of controlled end and laser sensor is connected;One end of indicating device and first connecting end are connected, and the other end of indicating device and the positive pole of power supply are connected;The positive pole of power supply is also connected with the power supply positive pole of laser sensor, and the negative pole of power supply is connected with second connecting end and the power supply negative pole of laser sensor respectively.The utility model can eliminate the security risk of artificial close-range observation rotating wind wheel disc, guarantee the personal safety of operating personnel, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine maintenance technology, specifically to an auxiliary device for locking the wind turbine rotor of a wind turbine generator set. Background Technology

[0002] Currently, the operation and maintenance of wind turbine generator sets require frequent entry and exit from the hub nacelle, and the wind turbine locking operation process relies on manual visual observation of the alignment status of the wind turbine positioning hole and the locking pin.

[0003] This traditional operating mode is limited by the narrow observation space at the wind turbine, making it difficult to guarantee the positioning accuracy of visual observation. This often leads to an increase in the number of repeated operations, resulting in a significant reduction in the efficiency of the locking operation. Utility Model Content

[0004] In view of this, the present invention provides an auxiliary device for locking the wind turbine rotor of a wind turbine generator set, so as to solve the technical problem of low efficiency in aligning the positioning hole and the locking pin of the wind turbine rotor.

[0005] This utility model provides an auxiliary device for locking the wind turbine rotor of a wind turbine generator set, including a laser sensor, a switching circuit, an indicator device, and a power supply;

[0006] The laser sensor is mounted on the bearing housing with a locking pin, and is located above or below the locking pin.

[0007] The switching circuit includes a first connection terminal, a second connection terminal, and a controlled terminal, with the controlled terminal connected to the signal output terminal of the laser sensor.

[0008] One end of the indicator is connected to the first connection terminal, and the other end of the indicator is connected to the positive terminal of the power supply.

[0009] The positive terminal of the power supply is also connected to the positive terminal of the laser sensor, and the negative terminal of the power supply is connected to the second connection terminal and the negative terminal of the laser sensor.

[0010] This utility model discloses an auxiliary device for locking the wind turbine rotor. In use, the bearing housing is brought close to the rotor disc, and the position of the bearing housing is moved. When the locking pin and the rotor positioning hole are aligned, the time it takes for the laser sensor to receive the returned light signal changes, resulting in a high-level signal output. This connects the first and second connection terminals of the control switch circuit, and the indicating device is connected to the power supply and begins operation. The alignment of the locking pin and the rotor positioning hole can then be determined based on the operating status of the indicating device. The automatic detection of the alignment by the laser sensor completely eliminates the safety hazards of manually observing the rotating rotor disc at close range, ensuring the safety of operators and improving detection efficiency.

[0011] In some alternative implementations, the switching circuit includes a transistor and a first diode. The base of the transistor is connected to the signal output terminal of the laser sensor, the collector of the transistor is connected to the negative terminal of the first diode, the positive terminal of the first diode is connected to one end of the indicator device, and the emitter of the transistor is connected to the negative terminal of the power supply. The base of the transistor is the controlled terminal, the collector of the transistor is the first connection terminal, and the emitter of the transistor is the second connection terminal.

[0012] In this method, the signal from the laser sensor can be effectively converted into a switching signal for the control and indication device, improving the efficiency and reliability of signal processing. At the same time, the first diode can play a certain protective role, preventing reverse current from damaging the circuit and improving the stability of the circuit.

[0013] In some alternative implementations, the transistor is an NPN transistor.

[0014] In some alternative implementations, the switching circuit further includes a Zener diode, the anode of which is connected to the emitter of the transistor, and the cathode of which is connected to the collector of the transistor.

[0015] In this method, the Zener diode can limit the highest voltage in the circuit, preventing damage to sensitive components such as transistors due to excessive voltage, and enhancing the circuit's anti-interference capability and safety.

[0016] In some alternative embodiments, the auxiliary device for locking the wind turbine rotor also includes a second diode, the positive terminal of which is connected to the positive terminal of the power supply, and the negative terminal of which is connected to the positive terminal of the power supply of the laser sensor.

[0017] In this approach, the second diode enables power supply protection and isolation. When the laser sensor malfunctions or short-circuits, the second diode prevents backflow of current, protecting the power supply from damage. It also avoids power supply issues affecting the laser sensor, thus improving the overall stability and reliability of the device.

[0018] In some alternative implementations, the laser sensor is fixed to the bearing housing by an adhesive.

[0019] Using adhesive to fix the laser sensor to the bearing housing ensures the stability of the laser sensor during operation, avoids the sensor from loosening or shifting due to vibration or impact, and avoids the structural damage to the bearing housing body caused by traditional mechanical drilling.

[0020] In some alternative implementations, the indicating device is an indicator light.

[0021] By setting the indicator device as an indicator light, the status of the locked impeller can be displayed intuitively, allowing operators to quickly and accurately determine whether the locking pin is in place.

[0022] In some alternative implementations, the power supply is a 24V DC power supply.

[0023] In some alternative implementations, the indicator is located to the side of the high-speed shaft brake control switch of the wind turbine generator set.

[0024] The status indicator light is integrated on the side of the high-speed shaft brake control switch, making it easy to observe the alignment status of the impeller positioning hole and the locking pin.

[0025] In some alternative implementations, the power supply is located inside the electrical control cabinet of the wind turbine generator set.

[0026] The power supply is located inside the electrical control cabinet, which facilitates centralized power supply management. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the auxiliary device for locking the wind turbine rotor in an embodiment of this utility model;

[0029] Figure 2 This is a circuit diagram of the auxiliary device for locking the wind turbine rotor in an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Laser sensor; 2. Locking pin; 3. Wind turbine positioning hole; 4. Wind turbine disc; 5. Bearing housing; 6. Power supply; 7. Indicating device; Q1, Transistor; D1, First diode; D2, Second diode; D3, Zener diode. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] The current wind turbine locking operation relies on manual visual observation of the alignment status of the wind turbine positioning hole 3 and the locking pin 2. In this method, firstly, the operator needs to be in close contact with the rotating wind turbine disk for observation, which poses a high safety hazard and seriously threatens the personal safety of the operator; secondly, due to the narrow observation space at the wind turbine disk 4, the positioning accuracy of visual observation is difficult to guarantee, which often leads to an increase in the number of repeated operations, resulting in a significant reduction in the efficiency of the locking operation.

[0034] Therefore, in order to ensure the personal safety of staff and improve work efficiency, this utility model proposes an auxiliary device for locking the wind turbine rotor of a wind turbine generator set, combined with... Figure 1 and Figure 2 As shown, the auxiliary device for locking the wind turbine rotor of the wind turbine includes a laser sensor 1, a switching circuit, an indicator device 7, and a power supply 6.

[0035] The laser sensor 1 is mounted on the bearing seat 5 on which the locking pin 2 is installed, and is located above or below the locking pin 2.

[0036] The switching circuit includes a first connection terminal, a second connection terminal, and a controlled terminal, with the controlled terminal connected to the signal output terminal of the laser sensor 1.

[0037] One end of the indicator device 7 is connected to the first connection terminal, and the other end of the indicator device 7 is connected to the positive terminal of the power supply 6;

[0038] The positive terminal of power supply 6 is also connected to the positive power supply terminal of laser sensor 1, and the negative terminal of power supply 6 is connected to the second connection terminal and the negative power supply terminal of laser sensor 1 respectively.

[0039] Specifically, the laser sensor 1 includes an optical signal emitting unit and an optical signal receiving unit, typically composed of a semiconductor laser diode, capable of emitting laser light of a specific wavelength. The optical signal receiving unit generally employs an avalanche photodiode or a CMOS / CCD sensor to receive reflected light and convert it into an electrical signal. The laser sensor 1 determines the detection distance based on the time from laser emission to reception of reflected light and outputs a switching signal based on the measurement result.

[0040] Laser sensor 1 is fixed on bearing housing 5, which is then moved close to the wind turbine disk 4, such that the distance between the wind turbine positioning hole 3 and the locking pin 2 is 30cm-50cm. Moving bearing housing 5 results in a shorter light signal reception time when laser sensor 1 is not aligned with the wind turbine positioning hole 3, and a longer light signal reception time when aligned. When the measured light signal reception time exceeds a set threshold, the signal output terminal of laser sensor 1 outputs a high-level signal. The set threshold can be set via buttons or a display screen on laser sensor 1.

[0041] Power supply 6 uses a 24V DC power supply. The positive terminal (+24V) of power supply 6 is used as the starting point, and the negative terminal (0V) is used as the end point of the loop, forming a closed path.

[0042] The switching circuit and the indicating device 7 are connected in series between the positive and negative terminals of the power supply 6. When the laser sensor 1 and the wind turbine positioning hole 3 are aligned, the laser sensor 1 detects a change in the background at the target position, and the signal output terminal of the laser sensor 1 outputs a high-level signal, turning on the switching circuit and starting the indicating device 7. At this time, the wind turbine positioning hole 3 is aligned with the laser sensor 1, and the laser sensor 1 is located above or below the locking pin 2. This can be considered as the wind turbine positioning hole 3 about to align with the locking pin 2. At this time, the high-speed shaft brake is manually triggered and the locking pin 2 is manually engaged, causing the wind turbine disk 4 to stop rotating.

[0043] This utility model discloses an auxiliary device for locking the wind turbine rotor. In use, the bearing seat 5 is brought close to the rotor disc 4, and the position of the bearing seat 5 is moved. When the locking pin 2 and the rotor positioning hole 3 are aligned, the time it takes for the laser sensor 1 to receive the returned light signal changes, outputting a high-level signal. This connects the first and second connection terminals of the control switch circuit, and the indicating device 7 is connected to the power supply 6 and begins to work. The alignment of the locking pin 2 and the rotor positioning hole 3 can then be determined based on the working status of the indicating device 7. The laser sensor 1 automatically detects the alignment status of the locking pin 2 and the rotor positioning hole 3, completely eliminating the safety hazards of manually observing the rotating rotor disc at close range, ensuring the personal safety of operators, and improving detection efficiency.

[0044] In some embodiments, the switching circuit includes a transistor Q1 and a first diode D1. The base of transistor Q1 is connected to the signal output terminal of laser sensor 1, the collector of transistor Q1 is connected to the negative terminal of first diode D1, the positive terminal of first diode D1 is connected to one end of indicator device 7, and the emitter of transistor Q1 is connected to the negative terminal of power supply 6. The base of transistor Q1 is the controlled terminal, the collector of transistor Q1 is the first connection terminal, and the emitter of transistor Q1 is the second connection terminal.

[0045] Transistor Q1 is an NPN transistor. Laser sensor 1 serves as the trigger source, and its signal line, i.e., the signal output terminal, is connected to the base of transistor Q1. When laser sensor 1 detects a preset position, its internal switch closes, providing a control signal to transistor Q1.

[0046] Specifically, as the wind turbine disk 4 rotates, when the locking pin 2 and the wind turbine positioning hole 3 are not aligned, the laser sensor 1 has no output signal, the base of the transistor Q1 has no current and is in the cut-off state, and the circuit of the indicator device 7 is disconnected. When the locking pin 2 and the wind turbine positioning hole 3 are aligned, the laser sensor 1 detects the background change of the target position and outputs a high-level signal. The base of the transistor Q1 receives the high-level signal, so that a circuit is formed between the collector and emitter of the transistor Q1.

[0047] In this method, the signal from the laser sensor 1 can be effectively converted into a switching signal for the control indicator 7, improving the efficiency and reliability of signal processing. At the same time, the first diode D1 can play a certain protective role, preventing reverse current from damaging the circuit and improving the stability of the circuit.

[0048] In some embodiments, the switching circuit further includes a Zener diode, the anode of which is connected to the emitter of transistor Q1, and the cathode of which is connected to the collector of transistor Q1.

[0049] Zener diodes can limit the highest voltage in a circuit, preventing damage to sensitive components such as transistor Q1 due to excessive voltage, and enhancing the circuit's anti-interference capability and safety.

[0050] In some embodiments, the auxiliary device for locking the wind turbine rotor of the wind turbine generator set further includes a second diode D2, the positive terminal of the second diode D2 being connected to the positive terminal of the power supply 6, and the negative terminal of the second diode D2 being connected to the positive terminal of the power supply of the laser sensor 1.

[0051] It should be understood that transistor Q1, first diode D1, second diode D2, Zener diode D3 and the indicator device 7 are integrated on a printed circuit board, and the indicator device 7 can be set on the printed circuit board or connected separately via wires.

[0052] By incorporating the second diode D2, the power supply 6 can be protected and isolated. When the laser sensor 1 malfunctions or short-circuits, the second diode D2 can prevent current backflow, protecting the power supply 6 from damage. It can also prevent the laser sensor 1 from being affected by problems with the power supply 6, thus improving the stability and reliability of the entire device.

[0053] In some embodiments, the indicating device 7 is an indicator light.

[0054] Specifically, the indicator light can be a light-emitting diode (LED) or a small light bulb. When the indicator light is on, it clearly shows that the laser sensor 1 has been triggered and the wheel positioning hole is aligned with the locking pin 2; when it is off, it indicates that the laser sensor 1 has not been triggered and the wheel positioning hole is not aligned with the locking pin 2.

[0055] The indicator device 7 is set as an indicator light, which can intuitively display the status of the locked impeller, and the operator can quickly and accurately determine whether the locking pin 2 is in place.

[0056] In some embodiments, the laser sensor 1 is fixed to the bearing housing 5 by an adhesive.

[0057] Specifically, a metal adhesive is used to fix the laser sensor 1 to the bearing housing 5, which can ensure the stability of the laser sensor 1 during operation, avoid the sensor from loosening or shifting due to vibration or impact, and avoid the structural damage to the bearing housing 5 body caused by traditional mechanical drilling.

[0058] In some embodiments, the indicating device 7 is integrated on the side of the high-speed shaft brake control switch to facilitate the identification of the impeller positioning hole 3 and the locking pin 2. The power supply 6 is located inside the electrical control cabinet for centralized power supply management.

[0059] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope of protection.

Claims

1. An auxiliary device for locking the wind turbine rotor of a wind turbine generator set, characterized in that, It includes a laser sensor (1), a switching circuit, an indicator (7), and a power supply (6); The laser sensor (1) is mounted on the bearing seat (5) on which the locking pin (2) is installed, and is located on the upper or lower side of the locking pin (2); The switching circuit includes a first connection terminal, a second connection terminal, and a controlled terminal, wherein the controlled terminal is connected to the signal output terminal of the laser sensor (1); One end of the indicator (7) is connected to the first connection end, and the other end of the indicator (7) is connected to the positive terminal of the power supply (6); The positive terminal of the power supply (6) is also connected to the positive power supply terminal of the laser sensor (1), and the negative terminal of the power supply (6) is connected to the second connection terminal and the negative power supply terminal of the laser sensor (1).

2. The auxiliary device for locking the wind turbine rotor of a wind turbine generator set according to claim 1, characterized in that, The switching circuit includes a transistor (Q1) and a first diode (D1). The base of the transistor (Q1) is connected to the signal output terminal of the laser sensor (1). The collector of the transistor (Q1) is connected to the negative terminal of the first diode (D1). The positive terminal of the first diode (D1) is connected to one end of the indicator device (7). The emitter of the transistor (Q1) is connected to the negative terminal of the power supply (6). The base of the transistor (Q1) is the controlled terminal, the collector of the transistor (Q1) is the first connection terminal, and the emitter of the transistor (Q1) is the second connection terminal.

3. The auxiliary device for locking the wind turbine rotor of a wind turbine generator set according to claim 2, characterized in that, The transistor (Q1) is an NPN transistor (Q1).

4. The auxiliary device for locking the wind turbine rotor of a wind turbine generator set according to claim 3, characterized in that, The switching circuit also includes a Zener diode, the anode of which is connected to the emitter of the transistor (Q1), and the cathode of which is connected to the collector of the transistor (Q1).

5. The auxiliary device for locking the wind turbine rotor of a wind turbine generator set according to claim 1, characterized in that, It also includes a second diode (D2), the positive terminal of which is connected to the positive terminal of the power supply (6), and the negative terminal of which is connected to the positive terminal of the power supply of the laser sensor (1).

6. The auxiliary device for locking the wind turbine rotor of a wind turbine generator set according to claim 1, characterized in that, The laser sensor (1) is fixed to the bearing housing (5) by an adhesive.

7. The auxiliary device for locking the wind turbine rotor of a wind turbine generator set according to claim 1, characterized in that, The indicator device (7) is an indicator light.

8. The auxiliary device for locking the wind turbine rotor of a wind turbine generator set according to claim 1, characterized in that, The power supply (6) is a 24V DC power supply (6).

9. The auxiliary device for locking the wind turbine rotor of a wind turbine generator set according to claim 1, characterized in that, The indicator device (7) is located to the side of the high-speed shaft brake control switch of the wind turbine generator set.

10. The auxiliary device for locking the wind turbine rotor of a wind turbine generator set according to claim 1, characterized in that, The power supply (6) is located inside the electrical control cabinet of the wind turbine generator set.

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