Cleaning device for excitation lead of hydro-generator

Abstract

The invention provides a cleaning device for an excitation lead of a hydro-generator, and the cleaning device comprises a walking trolley which is used for walking on the inner wall of a rotor shaft of the hydro-generator in the length direction of the excitation lead, a cleaning channel is formed between the walking trolley and the inner wall of the rotor shaft, and the excitation lead is located in the cleaning channel; the multiple brush assemblies are arranged on the walking trolley and located in the cleaning channel, and the brush assemblies abut against the excitation leads; the negative pressure recovery assembly is used for recovering sweeps on the excitation lead under negative pressure; and the positive pressure spraying assembly is used for spraying a cleaning agent to the excitation lead. According to the cleaning device for the excitation lead of the hydro-generator, automatic cleaning of the excitation lead can be achieved, and high cleaning quality and cleaning efficiency are achieved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of excitation lead cleaning, and particularly to a cleaning device for the excitation lead of a hydrogenerator. Background Art

[0002] The excitation lead (copper bar) of a hydrogenerator is an important part of the generator, and its surface cleanliness directly affects the operating efficiency and lifespan of the generator. Due to long-term operation, dirt, oxide layers, and corrosives are likely to accumulate on the surface of the excitation lead, resulting in a decline in insulation performance and thus affecting the normal operation of the equipment.

[0003] The excitation lead is located inside the rotor shaft of the generator. During maintenance, due to limited space and the relatively large length of the copper bar, operators cannot directly clean the excitation lead. The cleaning is difficult and time-consuming, making it difficult to meet the requirements of high-efficiency and high-quality operations. Summary of the Invention

[0004] The present disclosure aims to solve at least one of the technical problems in the related art to some extent.

[0005] To this end, the purpose of the present disclosure is to provide a cleaning device for the excitation lead of a hydrogenerator.

[0006] To achieve the above object, the present disclosure provides a cleaning device for the excitation lead of a hydrogenerator, including: a traveling trolley configured to travel along the length direction of the excitation lead on the inner wall of the rotor shaft of the hydrogenerator, and a cleaning channel is formed between the traveling trolley and the inner wall of the rotor shaft, and the excitation lead is located in the cleaning channel; a plurality of brush assemblies respectively arranged on the traveling trolley and located in the cleaning channel, and the brush assemblies are in contact with the excitation lead; a negative-pressure recovery assembly, the negative-pressure end of the negative-pressure recovery assembly is arranged on the traveling trolley and located in the cleaning channel, and the negative-pressure recovery assembly is used for negative-pressure recovery of the waste chips on the excitation lead; a positive-pressure spraying assembly, the positive-pressure end of the positive-pressure spraying assembly is arranged on the traveling trolley and located in the cleaning channel, and the positive-pressure spraying assembly is used for spraying a cleaning agent onto the excitation lead.

[0007] Optionally, the walking trolley includes: a vehicle body provided with a cleaning groove, and the cleaning groove and the inner wall of the rotor shaft are oppositely arranged to form the cleaning channel; a plurality of wheels rotatably arranged on the vehicle body, and the plurality of wheels are respectively located on both sides of the cleaning channel; a first driving mechanism arranged on the vehicle body, and the power output end of the first driving mechanism is in transmission connection with the power input end of the wheel, and the first driving mechanism is used to drive the wheel to rotate; a magnetic attraction assembly arranged on one side of the vehicle body close to the inner wall of the rotor shaft, and there is a preset suction force between the magnetic attraction assembly and the inner wall of the rotor shaft, so that the wheel abuts against the inner wall of the rotor shaft.

[0008] Optionally, the magnetic attraction assembly includes: a permanent magnet arranged on one side of the vehicle body close to the inner wall of the rotor shaft, and there is a first suction force between the permanent magnet and the inner wall of the rotor shaft; an electromagnet arranged on one side of the vehicle body close to the inner wall of the rotor shaft, and there is a second suction force between the electromagnet and the inner wall of the rotor shaft; a current adjustment module arranged at the power supply end of the electromagnet, and the current adjustment module is used to adjust the current at the power supply end of the electromagnet to control the magnitude of the second suction force.

[0009] Optionally, the walking trolley further includes: a backup battery arranged in the vehicle body, and the power supply end of the backup battery is respectively connected to the power supply end of the first driving mechanism and the power supply end of the electromagnet.

[0010] Optionally, the brush assembly includes: a brush base rotatably arranged on the walking trolley and located in the cleaning channel; a flexible tube detachably arranged on the brush base, and the flexible tube abuts against the exciting lead; a second driving mechanism arranged on the walking trolley, and the power output end of the second driving mechanism is connected to the power input end of the brush base, and the second driving mechanism is used to drive the brush base to rotate.

[0011] Optionally, the brush assembly further includes: a conveying channel that penetrates the brush base along the rotation center axis of the brush base and extends to the surface of the flexible tube; a rotary joint, the stationary housing of the rotary joint is disposed on the traveling trolley, and the rotary inner core of the rotary joint is connected to one end of the conveying channel away from the surface of the flexible tube; a reversing valve, the first end of the reversing valve is connected to the stationary housing of the rotary joint, the second end of the reversing valve is connected to the negative pressure end of the negative pressure recovery assembly, and the third end of the reversing valve is connected to the positive pressure end of the positive pressure spraying assembly; wherein, the first end and the second end of the reversing valve are conducted, so that the negative pressure recovery assembly negatively recovers the waste chips on the exciting lead through the conveying channel, or, the first end and the third end of the reversing valve are conducted, so that the positive pressure spraying assembly sprays the cleaning agent onto the exciting lead through the conveying channel.

[0012] Optionally, a plurality of the brush assemblies are respectively located on one side of the exciting lead close to the inner wall of the rotor shaft and on one side of the exciting lead close to the traveling trolley, and the distance between the brush assembly located on the side of the exciting lead close to the inner wall of the rotor shaft and the brush assembly located on the side of the exciting lead close to the traveling trolley is less than the thickness of the exciting lead.

[0013] Optionally, the negative pressure recovery assembly includes: a recovery box, the air inlet end of the recovery box is disposed on the traveling trolley and located in the cleaning channel; a filter screen, the filter screen is disposed in the recovery box, and the filter screen is located between the air inlet end and the air outlet end of the recovery box; a negative pressure device, the air inlet end of the negative pressure device is connected to the air outlet end of the recovery box, and the negative pressure device is used to form a negative pressure in the recovery box.

[0014] Optionally, the positive pressure spraying assembly includes: a storage tank, the cleaning agent is disposed in the storage tank; a delivery pump, the liquid inlet end of the delivery pump is connected to the liquid outlet end of the storage tank, and the liquid outlet end of the delivery pump is disposed on the traveling trolley and located in the cleaning channel, and the delivery pump is used to pressurize and deliver the cleaning agent into the cleaning channel.

[0015] Optionally, the cleaning device further includes: a vision module, the shooting end of the vision module is disposed on the traveling trolley and faces the exciting lead, and the vision module is used to shoot a picture of the exciting lead.

[0016] The technical solution provided by the present disclosure may include the following beneficial effects:

[0017] Through the cooperation of the traveling trolley, the brush assembly, the negative pressure recovery assembly and the positive pressure spraying assembly, the automatic cleaning of the exciting lead can be realized, and the cleaning quality and cleaning efficiency are relatively high, so as to ensure the high-performance operation of the hydro-generator.

[0018] Additional aspects and advantages of the present disclosure will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present disclosure. Brief Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily understood from the following description of embodiments in conjunction with the drawings, in which:

[0020] Figure 1 is a schematic structural diagram of the walking trolley in a cleaning device for the excitation lead of a hydrogenerator according to an embodiment of the present disclosure;

[0021] Figure 2 is a schematic flow path diagram of a cleaning device for the excitation lead of a hydrogenerator according to an embodiment of the present disclosure;

[0022] As shown in the figure: 1. Walking trolley, 11. Vehicle body, 12. Wheels, 13. First driving mechanism, 14. Magnetic attraction assembly;

[0023] 2. Brush assembly, 21. Brush seat, 22. Flexible pipe, 23. Delivery channel, 24. Rotary joint, 25. Directional valve;

[0024] 3. Negative pressure recovery assembly, 31. Recovery box, 32. Filter screen, 33. Negative pressure device;

[0025] 4. Positive pressure spraying assembly, 41. Storage tank, 42. Delivery pump. Detailed Description of the Embodiments

[0026] Embodiments of the present disclosure will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present disclosure and should not be construed as limiting the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0027] As Figure 1 and Figure 2As shown in the figure, an embodiment of the present disclosure provides a cleaning device for the excitation lead of a hydrogenerator, including: a traveling trolley 1, a plurality of brush assemblies 2, a negative pressure recovery assembly 3, and a positive pressure spraying assembly 4. The traveling trolley 1 is used to travel along the inner wall of the rotor shaft of the hydrogenerator in the length direction of the excitation lead, and a cleaning channel is formed between the traveling trolley 1 and the inner wall of the rotor shaft. The excitation lead is located in the cleaning channel. The plurality of brush assemblies 2 are respectively arranged on the traveling trolley 1 and located in the cleaning channel, and the brush assemblies 2 are in contact with the excitation lead. The negative pressure end of the negative pressure recovery assembly 3 is arranged on the traveling trolley 1 and located in the cleaning channel, and the negative pressure recovery assembly 3 is used for negative pressure recovery of the waste chips on the excitation lead. The positive pressure end of the positive pressure spraying assembly 4 is arranged on the traveling trolley 1 and located in the cleaning channel, and the positive pressure spraying assembly 4 is used for spraying a cleaning agent onto the excitation lead.

[0028] It can be understood that since the plurality of brush assemblies 2 are respectively arranged on the traveling trolley 1 and located in the cleaning channel formed between the traveling trolley 1 and the inner wall of the rotor shaft, the brush assemblies 2 can use the movement of the traveling trolley 1 to achieve a comprehensive cleaning of the excitation lead in the cleaning channel. Moreover, since the negative pressure end of the negative pressure recovery assembly 3 is arranged on the traveling trolley 1 and located in the cleaning channel, the negative pressure recovery assembly 3 can perform negative pressure recovery of the waste chips swept off the excitation lead. In addition, since the positive pressure end of the positive pressure spraying assembly 4 is arranged on the traveling trolley 1 and located in the cleaning channel, the positive pressure spraying assembly 4 can spray a cleaning agent onto the excitation lead, thereby cleaning the excitation lead with the cleaning agent.

[0029] Thus, through the cooperation of the traveling trolley 1, the brush assemblies 2, the negative pressure recovery assembly 3, and the positive pressure spraying assembly 4, automatic cleaning of the excitation lead can be achieved, and it has a high cleaning quality and cleaning efficiency, thereby ensuring the high-performance operation of the hydrogenerator.

[0030] It should be noted that in a hydrogenerator, the excitation winding is arranged on the rotor shaft, and the excitation lead (copper bar) is arranged on the inner wall of the rotor shaft through fixing parts such as bolts and is connected to the excitation winding.

[0031] The traveling trolley 1 is used to carry the brush assemblies 2, the negative pressure end of the negative pressure recovery assembly 3, the positive pressure end of the positive pressure spraying assembly 4, etc., and achieve mobile cleaning. The specific type of the traveling trolley 1 can be set according to actual needs and is not limited thereto.

[0032] The brush assemblies 2 are used to clean the excitation lead. The specific type of the brush assemblies 2 can be set according to actual needs and is not limited thereto.

[0033] The negative pressure recovery assembly 3 is used to recover the waste chips on the excitation lead by negative pressure, and the positive pressure spraying assembly 4 is used to spray the cleaning agent onto the excitation lead. The specific types of the negative pressure recovery assembly 3 and the positive pressure spraying assembly 4 can be set according to actual needs, and there is no limitation on this. Among them, the cleaning agent can be alcohol.

[0034] As Figure 1 shown, in some embodiments, the traveling trolley 1 includes: a vehicle body 11, a plurality of wheels 12, a first driving mechanism 13, and a magnetic attraction assembly 14. The vehicle body 11 is provided with a cleaning groove, and the cleaning groove and the inner wall of the rotor shaft are oppositely arranged to form a cleaning channel. The wheels 12 are rotatably arranged on the vehicle body 11, and the plurality of wheels 12 are respectively located on both sides of the cleaning channel. The first driving mechanism 13 is arranged on the vehicle body 11, and the power output end of the first driving mechanism 13 is in transmission connection with the power input end of the wheels 12. The first driving mechanism 13 is used to drive the wheels 12 to rotate. The magnetic attraction assembly 14 is arranged on one side of the vehicle body 11 close to the inner wall of the rotor shaft, and there is a preset suction force between the magnetic attraction assembly 14 and the inner wall of the rotor shaft, so that the wheels 12 are abutted against the inner wall of the rotor shaft.

[0035] It can be understood that since the wheels 12 are rotatably arranged on the vehicle body 11, and the plurality of wheels 12 are respectively located on both sides of the cleaning channel, and the power output end of the first driving mechanism 13 is in transmission connection with the power input end of the wheels 12, the first driving mechanism 13 can drive the wheels 12 to rotate, so as to realize the movement of the vehicle body 11 along the length direction of the excitation lead. And because the magnetic attraction assembly 14 is arranged on one side of the vehicle body 11 close to the inner wall of the rotor shaft, and there is a preset suction force between the magnetic attraction assembly 14 and the inner wall of the rotor shaft, the wheels 12 can be abutted against the inner wall of the rotor shaft, thereby ensuring the stable movement of the vehicle body 11 in the rotor shaft.

[0036] It should be noted that the vehicle body 11 is the main structure of the traveling trolley 1. The specific type of the vehicle body 11 can be set according to actual needs, and there is no limitation on this. For example, the vehicle body 11 is of a U-shaped structure, and the U-shaped groove of the vehicle body 11 is the cleaning groove. The vehicle body 11 can also use a telescopic rod to achieve support and guidance.

[0037] The wheels 12 are used for the vehicle body 11 to move on the inner wall of the rotor shaft. The specific type of the wheels 12 can be set according to actual needs, and there is no limitation on this. For example, the diameter of the wheels 12 is four centimeters, and the wheels 12 can be set to four, and two wheels 12 are arranged on each side of the vehicle body 11.

[0038] The first driving mechanism 13 is used to drive the wheel 12 to rotate. The specific type of the first driving mechanism 13 can be set according to actual needs, and there is no limitation in this regard. By way of example, the first driving mechanism 13 can be a driving mechanism composed of a driving motor and a speed reducer, and the first driving mechanism 13 can drive a small part of the wheels 12, so that a small part of the wheels 12 serve as driving main wheels, and the remaining wheels 12 serve as auxiliary wheels.

[0039] Among them, for the power consumption of the walking trolley 1 and other components, remote power supply can be achieved by the walking trolley 1 dragging a cable, or self-power supply can be achieved by using a vehicle-mounted battery.

[0040] The magnetic attraction assembly 14 is used to adsorb the vehicle body 11 on the inner wall of the rotor shaft to avoid problems such as falling. The specific type of the magnetic attraction assembly 14 can be set according to actual needs, and there is no limitation in this regard.

[0041] In some embodiments, the magnetic attraction assembly 14 includes: a permanent magnet, an electromagnet, and a current adjustment module. The permanent magnet is arranged on one side of the vehicle body 11 close to the inner wall of the rotor shaft, and there is a first suction force between the permanent magnet and the inner wall of the rotor shaft. The electromagnet is arranged on one side of the vehicle body 11 close to the inner wall of the rotor shaft, and there is a second suction force between the electromagnet and the inner wall of the rotor shaft. The current adjustment module is arranged at the power supply end of the electromagnet, and the current adjustment module is used to adjust the current at the power supply end of the electromagnet to control the magnitude of the second suction force.

[0042] It can be understood that since the permanent magnet is arranged on one side of the vehicle body 11 close to the inner wall of the rotor shaft, and there is a first suction force between the permanent magnet and the inner wall of the rotor shaft, and the electromagnet is arranged on one side of the vehicle body 11 close to the inner wall of the rotor shaft, and there is a second suction force between the electromagnet and the inner wall of the rotor shaft, the vehicle body 11 can be adsorbed on the inner wall of the rotor shaft by using the first suction force between the permanent magnet and the inner wall of the rotor shaft and the second suction force between the electromagnet and the inner wall of the rotor shaft, thus ensuring the stable movement of the walking trolley 1. At the same time, since the current adjustment module is arranged at the power supply end of the electromagnet, the current adjustment module can adjust the current at the power supply end of the electromagnet, thereby controlling the magnitude of the second suction force, and further ensuring that the walking trolley 1 can adapt to different driving environments.

[0043] It should be noted that the permanent magnet has a permanent magnetic property, which can provide a continuous adsorption force for the vehicle body 11, and at the same time, it is also convenient to remove the vehicle body 11 from the inner wall of the rotor shaft. The specific type of the permanent magnet can be set according to actual needs, and there is no limitation in this regard. Among them, two permanent magnets can be arranged between the wheels 12 on both sides of the vehicle body 11 respectively.

[0044] When the electromagnet is energized, it has magnetism, and when the power is cut off, it loses magnetism. After being energized, it can provide continuous adsorption force for the vehicle body 11. At the same time, it is convenient to remove the vehicle body 11 from the inner wall of the rotor shaft after the power is cut off. The specific type of the electromagnet can be set according to actual needs, and no limitation is made thereto. Among them, two electromagnets can be provided and arranged between the wheels 12 on both sides of the vehicle body 11 respectively.

[0045] The current adjustment module is used to adjust the current of the electromagnet. The specific type of the current adjustment module can be set according to actual needs, and no limitation is made thereto. By way of example, the current adjustment module can be a power conversion circuit composed of variable resistors or a current adjustment chip.

[0046] In some embodiments, the walking trolley 1 further includes: a backup battery, which is arranged in the vehicle body 11, and the power supply terminals of the backup battery are respectively connected to the power supply terminal of the first driving mechanism 13 and the power supply terminal of the electromagnet.

[0047] It can be understood that, since the backup battery is arranged in the vehicle body 11 and the power supply terminals of the backup battery are respectively connected to the power supply terminal of the first driving mechanism 13 and the power supply terminal of the electromagnet, when the walking trolley 1 cannot obtain power, the backup battery can be used to continue walking, so as to prevent the walking trolley 1 from being stalled inside the rotor shaft due to a fault.

[0048] It should be noted that the backup battery is used for emergency power supply of the walking trolley 1. The specific type of the backup battery can be set according to actual needs, and no limitation is made thereto.

[0049] As Figure 1 shown, in some embodiments, the brush assembly 2 includes: a brush base 21, a flexible tube 22 and a second driving mechanism (not shown in the figure). The brush base 21 is rotatably arranged on the walking trolley 1 and located in the cleaning channel. The flexible tube 22 is detachably arranged on the brush base 21, and the flexible tube 22 abuts against the exciting lead. The second driving mechanism is arranged on the walking trolley 1, and the power output end of the second driving mechanism is connected to the power input end of the brush base 21. The second driving mechanism is used to drive the brush base 21 to rotate.

[0050] It can be understood that since the brush holder 21 is rotatably set on the walking trolley 1 and is located in the cleaning channel, and the flexible tube 22 is detachably set on the brush holder 21, the flexible tube 22 is in contact with the excitation lead, and the power output end of the second drive mechanism is connected to the power input end of the brush holder 21, so that the second drive mechanism can drive the brush holder 21 to rotate, thereby driving the flexible tube 22 to clean the excitation lead, thereby ensuring the cleanliness of the excitation lead. At the same time, the flexibility of the flexible tube 22 itself can cope with obstructions such as bolts on the excitation lead, thereby avoiding damage to the brush assembly 2 while achieving cleaning of the excitation lead. In addition, the detachable structure of the flexible tube 22 on the brush holder 21 facilitates the disassembly, assembly and replacement of the flexible tube 22, thereby making the use of the brush assembly 2 more convenient and less costly.

[0051] It should be noted that the brush holder 21 is used to carry the flexible tube 22. The specific type of the brush holder 21 can be set according to actual needs and is not limited to this. For example, the brush holder 21 can be a seat structure with a rotating shaft, and the rotating shaft of the brush holder 21 is arranged on the vehicle body 11 through a bearing, and the rotating shaft of the brush holder 21 is connected to the second drive mechanism through gears, etc.

[0052] The flexible tube 22 is a flexible structure, which is used to rotate under the drive of the brush holder 21 to clean the excitation lead. The flexible tube 22 has a certain elastic deformation ability. The specific type of the flexible tube 22 can be set according to actual needs and is not limited to this.

[0053] The second driving mechanism is used to drive the brush holder 21 to rotate forward and reverse to achieve the cleaning of the excitation lead by the flexible tube 22. The specific type of the second driving mechanism can be set according to actual needs and is not limited to this. For example, the second driving mechanism can be a driving motor, which is connected to the rotating shaft of the brush holder 21 through a gear.

[0054] like Figure 2 As shown, in some embodiments, the brush assembly 2 further includes: a delivery channel 23, a rotary joint 24, and a reversing valve 25. The delivery channel 23 passes through the brush holder 21 along the rotational center axis of the brush holder 21 and extends to the surface of the flexible tube 22. The stationary housing of the rotary joint 24 is disposed on the traveling trolley 1, and the rotating inner core of the rotary joint 24 is connected to the end of the delivery channel 23 away from the surface of the flexible tube 22. The first end of the reversing valve 25 is connected to the stationary housing of the rotary joint 24, and the second end of the reversing valve 25 is connected to the negative pressure end of the negative pressure recovery assembly 3. The third end of the reversing valve 25 is connected to the positive pressure end of the positive pressure spray assembly 4. The first and second ends of the reversing valve 25 are connected to each other, so that the negative pressure recovery assembly 3 can negatively recover waste chips on the excitation lead through the delivery channel 23, or the first and third ends of the reversing valve 25 are connected to each other, so that the positive pressure spray assembly 4 can spray cleaning agent onto the excitation lead through the delivery channel 23.

[0055] It can be understood that since the conveying channel 23 penetrates through the brush holder 21 along the rotation center axis of the brush holder 21 and extends to the surface of the flexible tube 22, and the rotating inner core of the rotary joint 24 is connected to one end of the conveying channel 23 away from the surface of the flexible tube 22, and the first end of the reversing valve 25 is connected to the stationary housing of the rotary joint 24, the first end of the reversing valve 25 and the surface of the flexible tube 22 can be connected through the conveying channel 23. At the same time, by setting the rotary joint 24, the rotation of the brush holder 21 is not affected.

[0056] Moreover, since the second end of the reversing valve 25 is connected to the negative pressure end of the negative pressure recovery assembly 3, and the third end of the reversing valve 25 is connected to the positive pressure end of the positive pressure spraying assembly 4, when the first end and the second end of the reversing valve 25 are conducted, the negative pressure recovery assembly 3 can recover the waste chips on the excitation lead through the conveying channel 23 by negative pressure. When the first end and the third end of the reversing valve 25 are conducted, the positive pressure spraying assembly 4 can spray the cleaning agent onto the excitation lead through the conveying channel 23. Thus, through the commutation switching of the reversing valve 25, both the negative pressure recovery assembly 3 and the positive pressure spraying assembly 4 can clean the excitation lead by using the conveying channel 23 integrated in the flexible tube 22.

[0057] It should be noted that the conveying channel 23 is used to be integrated in the brush holder 21 and the flexible tube 22, so as to cooperate with the negative pressure recovery assembly 3 and the flexible tube 22 to achieve negative pressure absorption of waste chips, and cooperate with the positive pressure spraying assembly 4 and the flexible tube 22 to achieve positive pressure spraying of the cleaning agent. The specific type of the conveying channel 23 can be set according to actual needs, and there is no limitation on this. For example, the conveying channel 23 includes a first hole arranged at the central axis of the brush holder 21 and a plurality of second holes arranged in the flexible tube 22.

[0058] The rotary joint 24 is used for conduction during the rotation of the brush holder 21. The rotary joint 24 has a stationary housing and a rotating inner core. The stationary housing and the rotating inner core are arranged to rotate relative to each other and have a sealing structure, which does not affect the rotation of the brush holder 21 during conduction. The specific type of the rotary joint 24 can be set according to actual needs, and there is no limitation on this.

[0059] The reversing valve 25 is used for switching between the passage between the negative pressure end of the negative pressure recovery assembly 3 and one end of the conveying channel 23 away from the surface of the flexible tube 22 and the passage between the positive pressure end of the positive pressure spraying assembly 4 and one end of the conveying channel 23 away from the surface of the flexible tube 22. The specific type of the reversing valve 25 can be set according to actual needs, and there is no limitation on this.

[0060] In some embodiments, multiple brush assemblies 2 are respectively located on one side of the exciting lead wire close to the inner wall of the rotor shaft and on one side of the exciting lead wire close to the traveling carriage 1, and the distance between the brush assembly 2 on the side of the exciting lead wire close to the inner wall of the rotor shaft and the brush assembly 2 on the side of the exciting lead wire close to the traveling carriage 1 is less than the thickness of the exciting lead wire.

[0061] It can be understood that since multiple brush assemblies 2 are respectively located on one side of the exciting lead wire close to the inner wall of the rotor shaft and on one side of the exciting lead wire close to the traveling carriage 1, both sides of the exciting lead wire can be cleaned by using the brush assemblies 2, thus ensuring a high cleaning efficiency and cleaning quality. At the same time, since the distance between the brush assembly 2 on the side of the exciting lead wire close to the inner wall of the rotor shaft and the brush assembly 2 on the side of the exciting lead wire close to the traveling carriage 1 is less than the thickness of the exciting lead wire, the brush assembly 2 on the side of the exciting lead wire close to the inner wall of the rotor shaft and the brush assembly 2 on the side of the exciting lead wire close to the traveling carriage 1 can form a clamping effect on the exciting lead wire, thereby effectively improving the cleaning quality and cleaning efficiency of the brush assembly 2 on the exciting lead wire.

[0062] As Figure 2 shown, in some embodiments, the negative pressure recovery assembly 3 includes: a recovery box 31, a filter screen 32, and a negative pressure device 33. The air inlet end of the recovery box 31 is arranged on the traveling carriage 1 and is located in the cleaning channel. The filter screen 32 is arranged in the recovery box 31, and the filter screen 32 is located between the air inlet end and the air outlet end of the recovery box 31. The air inlet end of the negative pressure device 33 is connected to the air outlet end of the recovery box 31, and the negative pressure device 33 is used to form a negative pressure in the recovery box 31.

[0063] It can be understood that since the air inlet end of the recovery box 31 is arranged on the traveling carriage 1 and is located in the cleaning channel, and the air inlet end of the negative pressure device 33 is connected to the air outlet end of the recovery box 31, the negative pressure device 33 can form a negative pressure in the recovery box 31, thereby realizing the transportation of the waste chips on the exciting lead wire into the recovery box 31. At the same time, since the filter screen 32 is arranged in the recovery box 31 and the filter screen 32 is located between the air inlet end and the air outlet end of the recovery box 31, the filter screen 32 can block the waste chips in the recovery box 31, thereby realizing the collection of the waste chips.

[0064] It should be noted that the recovery box 31 is used to suck the waste chips on the exciting lead wire by negative pressure and store the sucked waste chips at the same time. The specific type of the recovery box 31 can be set according to actual needs, and no limitation is made thereto.

[0065] The filter screen 32 is used for filtering waste chips. The specific type of the filter screen 32 can be set according to actual needs, and no limitation is made thereto.

[0066] The negative pressure device 33 is used to form a negative pressure in the recovery box 31. The specific type of the negative pressure device 33 can be set according to actual needs, and there is no limitation in this regard. By way of example, the negative pressure device 33 can be a device such as a blower.

[0067] Among them, for the recovery box 31 and the negative pressure device 33, both can be arranged in the external space of the engine.

[0068] Such as Figure 2 As shown, in some embodiments, the positive pressure spray assembly 4 includes: a storage tank 41 and a transfer pump 42. A cleaning agent is provided in the storage tank 41. The liquid inlet end of the transfer pump 42 is connected to the liquid outlet end of the storage tank 41, and the liquid outlet end of the transfer pump 42 is arranged on the walking trolley 1 and located in the cleaning channel. The transfer pump 42 is used to boost the pressure of the cleaning agent and transport it into the cleaning channel.

[0069] It can be understood that since the liquid inlet end of the transfer pump 42 is connected to the liquid outlet end of the storage tank 41, and the liquid outlet end of the transfer pump 42 is arranged on the walking trolley 1 and located in the cleaning channel, the transfer pump 42 can boost the pressure of the cleaning agent in the storage tank 41 and transport it into the cleaning channel, thereby realizing the high-efficiency and high-quality cleaning of the excitation lead using the cleaning agent.

[0070] It should be noted that the storage tank 41 is used to store the cleaning agent. The specific type of the storage tank 41 can be set according to actual needs, and there is no limitation in this regard. By way of example, the storage tank 41 is of a tank structure and has a liquid replenishment system.

[0071] The transfer pump 42 is used to boost the pressure and transport the cleaning agent. The specific type of the transfer pump 42 can be set according to actual needs, and there is no limitation in this regard.

[0072] Among them, for the storage tank 41 and the transfer pump 42, both can be arranged in the external space of the engine.

[0073] In some embodiments, the cleaning device further includes: a vision module. The shooting end of the vision module is arranged on the walking trolley 1 and faces the excitation lead, and the vision module is used to shoot the picture of the excitation lead.

[0074] It can be understood that since the shooting end of the vision module is arranged on the walking trolley 1 and faces the excitation lead, the vision module can shoot the picture of the excitation lead, thereby judging the cleaning effect on the excitation lead using the shot picture, and then facilitating the timely adjustment of the cleaning parameters to ensure a high cleaning quality and cleaning efficiency.

[0075] It should be noted that the vision module is used to shoot the picture of the excitation lead. The specific type of the vision module can be set according to actual needs, and there is no limitation in this regard. By way of example, the vision module includes a high-definition camera arranged on the walking trolley 1 and devices such as a processor and a display arranged in the external space.

[0076] In the description of the present disclosure, the terms "first", "second", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more.

[0077] Any process or method description shown in a flowchart or described otherwise herein can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present disclosure includes additional implementations, where the functions may be executed in a substantially simultaneous manner or in an order opposite to that shown or discussed, according to the functions involved, which should be understood by those skilled in the technical field to which the embodiments of the present disclosure pertain.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A cleaning device for the excitation lead of a hydrogenerator, characterized in that, include: A walking trolley, the walking trolley is used to walk on the inner wall of the rotor shaft of the hydro-generator along the length direction of the excitation lead, and a cleaning channel is formed between the walking trolley and the inner wall of the rotor shaft, and the excitation lead is located in the cleaning channel; A plurality of brush assemblies, each of which is disposed on the traveling trolley and located in the cleaning channel, and the brush assemblies are in contact with the excitation lead; A negative pressure recovery component, wherein the negative pressure end of the negative pressure recovery component is arranged on the walking trolley and located in the cleaning channel, and the negative pressure recovery component is used to negatively pressure recover waste chips on the excitation lead; A positive pressure spray assembly, wherein the positive pressure end of the positive pressure spray assembly is arranged on the walking trolley and located in the cleaning channel, and the positive pressure spray assembly is used to spray cleaning agent onto the excitation lead.

2. The cleaning device for the excitation lead of a hydrogenerator according to claim 1, characterized in that, The walking trolley comprises: A vehicle body, wherein the vehicle body is provided with a cleaning groove, and the cleaning groove and the inner wall of the rotor shaft are arranged opposite to each other and form the cleaning channel; a plurality of wheels, the wheels being rotatably disposed on the vehicle body, and the plurality of wheels being respectively located on both sides of the cleaning channel; a first driving mechanism, the first driving mechanism being disposed on the vehicle body, and having a power output end of the first driving mechanism drivingly connected to a power input end of the wheel, the first driving mechanism being configured to drive the wheel to rotate; A magnetic attraction component is arranged on a side of the vehicle body close to the inner wall of the rotor shaft, and a preset attraction force is provided between the magnetic attraction component and the inner wall of the rotor shaft so that the wheel rests against the inner wall of the rotor shaft.

3. The cleaning device for the excitation lead of a hydrogenerator according to claim 2, characterized in that The magnetic attraction component includes: a permanent magnet, the permanent magnet being disposed on a side of the vehicle body close to an inner wall of the rotor shaft, and having a first attractive force between the permanent magnet and the inner wall of the rotor shaft; an electromagnet, wherein the electromagnet is disposed on a side of the vehicle body close to the inner wall of the rotor shaft, and a second suction force is formed between the electromagnet and the inner wall of the rotor shaft; A current regulating module is provided at the power supply end of the electromagnet, and is used to regulate the current at the power supply end of the electromagnet to control the magnitude of the second suction force.

4. The cleaning device for the excitation lead of a hydrogenerator according to claim 3, characterized in that, The walking trolley also includes: A backup battery is arranged in the vehicle body, and a power supply end of the backup battery is respectively connected to a power supply end of the first driving mechanism and a power supply end of the electromagnet.

5. The cleaning device for the excitation lead of a hydrogenerator according to claim 1, characterized in that, The brush assembly comprises: a brush holder, the brush holder being rotatably mounted on the traveling trolley and located in the cleaning passage; a flexible tube, the flexible tube being detachably arranged on the brush holder, and the flexible tube abutting against the excitation lead; The second driving mechanism is arranged on the walking trolley, and the power output end of the second driving mechanism is connected to the power input end of the brush holder, and the second driving mechanism is used to drive the brush holder to rotate.

6. The cleaning device for the excitation lead of a hydrogenerator according to claim 5, characterized in that The brush assembly also includes: a conveying channel, the conveying channel penetrating the brush holder along the rotation center axis of the brush holder and extending to the surface of the flexible tube; Rotary joint, the stationary housing of the rotary joint is arranged on the traveling trolley, and the rotary inner core of the rotary joint is connected to one end of the conveying channel away from the surface of the flexible tube; Directional valve, the first end of the directional valve is connected to the stationary housing of the rotary joint, the second end of the directional valve is connected to the negative pressure end of the negative pressure recovery assembly, and the third end of the directional valve is connected to the positive pressure end of the positive pressure spraying assembly; Wherein, the first end and the second end of the directional valve are conducted, so that the negative pressure recovery assembly negatively recovers the waste chips on the excitation lead through the conveying channel, or, the first end and the third end of the directional valve are conducted, so that the positive pressure spraying assembly sprays the cleaning agent onto the excitation lead through the conveying channel.

7. The cleaning device for the excitation lead of a hydrogenerator according to claim 1, characterized in that A plurality of the brush assemblies are respectively located on one side of the excitation lead close to the inner wall of the rotor shaft and on one side of the excitation lead close to the traveling trolley, and the distance between the brush assembly located on the side of the excitation lead close to the inner wall of the rotor shaft and the brush assembly located on the side of the excitation lead close to the traveling trolley is less than the thickness of the excitation lead.

8. The cleaning device for the excitation lead of a hydrogenerator according to claim 1, characterized in that The negative pressure recovery assembly includes: Recovery box, the air inlet end of the recovery box is arranged on the traveling trolley and is located in the cleaning channel; Filter screen, the filter screen is arranged in the recovery box, and the filter screen is located between the air inlet end and the air outlet end of the recovery box; Negative pressure device, the air inlet end of the negative pressure device is connected to the air outlet end of the recovery box, and the negative pressure device is used to form a negative pressure in the recovery box.

9. The cleaning device for the excitation lead of a hydrogenerator according to claim 1, characterized in that The positive pressure spraying assembly includes: Storage tank, the cleaning agent is arranged in the storage tank; 10. The cleaning device for the excitation lead of a hydrogenerator according to claim 1, characterized in that, Delivery pump, the liquid inlet end of the delivery pump is connected to the liquid outlet end of the storage tank, and the liquid outlet end of the delivery pump is arranged on the traveling trolley and is located in the cleaning channel, and the delivery pump is used to boost and convey the cleaning agent into the cleaning channel. The cleaning device further includes: Vision module, the shooting end of the vision module is arranged on the traveling trolley and faces the excitation lead, and the vision module is used to shoot the picture of the excitation lead.

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