An electric porcelain insulator with overheat protection

Abstract

The present invention provides an electric porcelain insulator with overheat protection, which includes a box body, an electric porcelain insulator, a moving mechanism and a controller. The electric porcelain insulator is rotatably arranged between the box body and the frame. A driving mechanism is provided on the top surface of the box body. A first L-shaped frame and a second L-shaped frame are oppositely arranged on the top surface of the box body. A non-contact temperature sensor and a pressure measuring mechanism are provided on the side of the moving mechanism. The second lead screw is driven by a third motor. A second moving block is arranged on the second lead screw. A cleaning mechanism is arranged on the side of the second moving block. A rotating plate is rotatably arranged on the cleaning mechanism. The rotating plate is connected to the top surface of the cleaning mechanism through a first electric push rod. The rotating plate is connected to a support plate through a second electric push rod. The gas-liquid pump is connected to a spray pipe through a pressure pipe. The spray pipe and a sound receiver are arranged on the bottom surface of the support plate. The present invention sets a non-contact temperature sensor to monitor the insulator, the gas-liquid pump extracts coolant and air to cool and clean the insulator, and at the same time detects the surface cracks of the insulator according to the sound frequency.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal protection porcelain insulators, and particularly to a porcelain insulator with overheat protection. Background Art

[0002] Insulators are crucial components in the power system, used for installing between conductors at different potentials or between conductors and grounding members, and having the ability to withstand voltage and mechanical stress. There are various types and shapes of insulators, but their basic structure usually consists of two major parts: insulating parts and connecting fittings. These insulating components play roles of isolation, support, and fixation in overhead transmission lines, ensuring that the current flows along the predetermined path and preventing current leakage and short - circuit accidents. Porcelain insulators, as a type of insulator, are mainly made of ceramics, which are usually composed of inorganic non - metallic compounds such as alumina and silicate. Porcelain insulators have extremely high insulation performance and excellent mechanical strength, and can effectively prevent the passage of current under high - voltage electric fields, playing roles of isolation, support, and fixation. When high - voltage current flows in the transmission line, porcelain insulators can act as a solid barrier to isolate the current from surrounding media such as air and ground, ensuring the safe operation of the power system.

[0003] When the porcelain insulator is in good operating condition, due to the existence of a certain leakage current, heating is a normal phenomenon. However, when the performance of the porcelain insulator deteriorates, such as when bird droppings fall on the porcelain surface causing surface contamination and when the porcelain insulator surface cracks, these impurities will damage the insulation performance of the insulator, resulting in an increase in creepage leakage current and heating, thus increasing the temperature of the insulator. The overheat problem will not only affect the electrical performance and mechanical strength of the porcelain insulator but may also lead to more serious safety accidents. Therefore, it is particularly important to develop a porcelain insulator with overheat protection. Summary of the Invention

[0004] In view of this, the present invention proposes a porcelain insulator with overheat protection, which can extract coolant and air by a gas - liquid pump to cool down and clean the insulator according to the surface temperature of the insulator detected by a non - contact temperature sensor, and simultaneously detect the surface cracks of the insulator according to the sound frequency, thereby ensuring the safe and stable operation of the porcelain insulator and avoiding damage due to excessive temperature.

[0005] The technical solution of the present invention is realized as follows:

[0006] An electric porcelain insulator with overheat protection, comprising a box body, an electric porcelain insulator, a moving mechanism and a controller. A frame is provided on the side of the box body. The electric porcelain insulator is rotatably arranged between the box body and the frame. A high-voltage power line passes through the middle of the electric porcelain insulator. A driving mechanism is provided on the top surface of the box body, and the driving mechanism is drivingly connected to the electric porcelain insulator. A first L-shaped frame and a second L-shaped frame are oppositely provided on the top surface of the box body. The moving mechanism is arranged on the first L-shaped frame, and a non-contact temperature sensor and a pressure measuring mechanism are provided on its side. The pressure measuring mechanism is used to detect the voltage difference at different heights of the electric porcelain insulator. The detection direction of the non-contact temperature sensor faces the electric porcelain insulator. A second lead screw is rotatably arranged on the second L-shaped frame. One end of the second lead screw is rotatably connected to the box body, and the other end passes through the second L-shaped frame and is drivingly connected to a third motor. The third motor is arranged on the top surface of the second L-shaped frame. A second moving block is provided on the second lead screw. A cleaning mechanism is provided on the side of the second moving block. A rotating plate is rotatably arranged on the top surface of the cleaning mechanism. The rotating plate is connected to the top surface of the cleaning mechanism through a first electric push rod. A second electric push rod is provided on the bottom surface of the rotating plate. A support plate is provided at the telescopic end of the second electric push rod. An air-liquid pump is provided on the top surface of the second L-shaped frame. The air-liquid pump is connected to a spray pipe through a pressure pipe. The spray pipe is arranged on the bottom surface of the support plate. A sound receiver is also provided on the bottom surface of the support plate. The air-liquid pump is connected to the bottom of the box body through a connecting pipe. A three-way valve is provided on the connecting pipe. The controller is arranged on the side of the box body and is electrically connected to the moving mechanism, the non-contact temperature sensor, the pressure measuring mechanism, the driving mechanism, the third motor, the cleaning mechanism, the first electric push rod, the second electric push rod, the air-liquid pump, the sound receiver and the three-way valve.

[0007] Preferably, the moving mechanism includes a first lead screw, a first motor and a first moving block. The first lead screw is rotatably arranged on the first L-shaped frame. One end of it is rotatably arranged on the top of the box body, and the other end passes through the first L-shaped frame and is drivingly connected to the first motor. The first motor is arranged on the top surface of the first L-shaped frame.

[0008] Preferably, the pressure measuring mechanism includes a second motor, a driving bevel gear, a driven bevel gear, a first rotating shaft and a contact rod. The second motor is arranged on the bottom surface of the first moving block, and its output shaft is sleeved with the driving bevel gear. The first rotating shaft is rotatably arranged on the first moving block, and its two ends are respectively located on the top surface and the bottom surface of the first moving block. Contact rods parallel to each other are respectively provided at the two ends of the first rotating shaft. The driven bevel gear is sleeved on the first rotating shaft and meshes with the driving bevel gear.

[0009] Preferably, the electric porcelain insulator includes an insulating umbrella skirt part, an inner sleeve, an inner bearing and an outer bearing. The outer bearing is sleeved on the bottom of the insulating umbrella skirt part and is installed on a water collecting tray. A through hole is provided in the insulating umbrella skirt part. The inner sleeve is rotatably arranged in the through hole through the inner bearing.

[0010] Preferably, an internal circulation heat dissipation mechanism is further included. The internal circulation heat dissipation mechanism includes a sealing ring, a first conduit, a second conduit, and a circulation pump. The top of the porcelain insulator passes through the top of the frame and relatively rotatably sleeved with a sealing ring at its upper and lower ends. A through hole is provided in the middle of the sealing ring, and a first annular groove is provided on the inner wall of the through hole. Second annular grooves are respectively provided at the upper and lower ends of the insulating umbrella skirt portion. A spiral channel is provided in the insulating umbrella skirt portion, and the spiral channel is respectively communicated with the upper and lower second annular grooves. The first annular groove and the second annular groove are communicated with each other. The sealing ring is communicated with the accommodation cavity in the box body through the first conduit. A circulation pump is provided on the first conduit, and the circulation pump is arranged on the top surface of the frame. The sealing ring is communicated with the accommodation cavity through the second conduit.

[0011] Preferably, the cleaning mechanism includes a third electric push rod, a U-shaped frame, a second rotating shaft, a fourth motor, and a brush. The third electric push rod is arranged on the side of the second moving block, and its telescopic end is connected to the side of the U-shaped frame. The second rotating shaft is rotatably arranged on the U-shaped frame, one end of which is rotatably arranged on the U-shaped frame, and the other end passes through the U-shaped frame and is drivingly connected to the fourth motor. The fourth motor is arranged on the bottom surface of the U-shaped frame, and the brush is sleeved on the second rotating shaft.

[0012] Preferably, the driving mechanism includes a fifth motor, a driving gear, and a driven gear. The third motor is arranged on the top surface of the water collecting tray, and a driving gear is provided on its output shaft. The driven gear is sleeved on the lower end of the porcelain insulator, and the driven gear meshes with the driving gear.

[0013] Preferably, a water collecting tray is further included. The water collecting tray is arranged on the top surface of the box body and below the porcelain insulator. A return water hole is provided at the bottom of the water collecting tray, and the return water hole is communicated with the box body.

[0014] Preferably, a distance sensor is further included. The distance sensor is arranged on the bottom surface of the support plate and electrically connected to the controller.

[0015] Preferably, an outer bearing is further included. The outer bearing is sleeved on the bottom end of the porcelain insulator, and the porcelain insulator is rotatably arranged on the top of the box body through the outer bearing.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present invention is provided with a non-contact temperature sensor, which monitors the temperature of the insulator in real time driven by a moving mechanism. A driving mechanism drives the porcelain insulator to rotate. When the non-contact temperature sensor detects that the surface temperature of the porcelain insulator is too high, the controller starts the air-liquid pump. The air-liquid pump pumps out the coolant in the box body, passes through the connecting pipe and sprays out from the spray pipe, which can cool down the porcelain insulator. After the cooling operation is completed, using a three-way valve, the air-liquid pump extracts air to clean the surface of the porcelain insulator. At the same time, a sound receiver detects the sound of the air flow and the impact on the surface of the porcelain insulator, and the surface crack of the porcelain insulator can be detected according to the frequency of the sound, ensuring the safe and stable operation of the porcelain insulator;

[0018] 2. An internal circulation heat dissipation mechanism is provided. When the non-contact temperature sensor detects that the surface temperature of the porcelain insulator is too high, the circulation pump is started at the same time. The circulation pump extracts the arc extinguishing coolant and enters the first annular groove and the second annular groove through the first conduit, and flows back into the box body through the second conduit after passing through the spiral channel from the second annular groove. When the arc extinguishing coolant flows through the spiral channel, it can take away the internal heat of the porcelain insulator, thereby preventing the porcelain insulator from having too high a temperature. When the temperature of the arc extinguishing coolant rises, the viscosity decreases and the fluidity is good, which is beneficial to the normal operation of the air-liquid pump;

[0019] 3. A pressure measuring mechanism is provided, which can detect the voltage difference of the porcelain insulator at a preset height, so as to judge whether there is an abnormality in the porcelain insulator. When the voltage difference is too large, the resistance of the porcelain insulator decreases, and the cleaning mechanism is started to clean the surface of the porcelain insulator, eliminating dirt such as bird droppings, and ensuring that the porcelain insulator is in a normal working state;

[0020] 4. A water collecting tray is provided. When the air-liquid pump pumps out the arc extinguishing coolant in the box body, passes through the connecting pipe and sprays out from the spray pipe to cool down the porcelain insulator, the arc extinguishing coolant will fall into the lower water collecting tray. There are return holes at the bottom of the water collecting tray, and the arc extinguishing coolant flows back into the box body from the return holes, completing the recovery of the arc extinguishing coolant and repeating the use to avoid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only the preferred embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of a porcelain insulator with overheat protection according to the present invention;

[0023] Figure 2 It is a schematic cross-sectional structural diagram of a porcelain insulator with overheat protection according to the present invention;

[0024] Figure 3 is Figure 2 an enlarged view of part A in

[0025] Figure 4 is Figure 2 an enlarged view of part B in

[0026] Figure 5 is Figure 2 an enlarged view of part C in

[0027] Figure 6 is a schematic cross-sectional structure view of the porcelain insulator of the present invention;

[0028] Figure 7 is Figure 6 an enlarged view of part D in

[0029] Reference numerals: 1, box body; 2, water collecting tray; 3, first L-shaped frame; 4, first lead screw; 5, first motor; 6, second L-shaped frame; 7, second lead screw; 8, second motor; 9, gas-liquid pump; 10, three-way valve; 11, pressure pipe; 12, rotating plate; 13, first electric push rod; 14, second electric push rod; 15, U-shaped frame; 16, third motor; 17, first rotating shaft; 18, brush bristles; 19, third electric push rod; 20, controller; 21, insulating umbrella skirt; 22, inner sleeve; 23, first moving block; 24, fourth motor; 25, driving bevel gear; 26, driven bevel gear; 27, second rotating shaft; 28, contact rod; 29, non-contact temperature sensor; 30, support plate; 31, spray pipe; 32, distance sensor; 33, sound receiver; 34, inner bearing; 35, outer bearing; 36, spiral channel; 37, return water hole; 38, fifth motor; 39, driving gear; 40, driven gear; 41, second moving block; 42, conduit one; 43, conduit two; 44, sealing ring; 45, annular groove one; 46, annular groove two; 47, connecting pipe; 48, circulation pump; 49, frame. Detailed implementation manners

[0030] To better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention will be further described in conjunction with the accompanying drawings.

[0031] See Figures 1 to 7, an electroceramic insulator with overheat protection provided by the present invention includes a box body 1, an electroceramic insulator, a moving mechanism, and a controller 20. A frame 49 is provided on the side of the box body 1. The electroceramic insulator is rotatably arranged between the box body 1 and the frame 49. A high-voltage power line passes through the middle of the electroceramic insulator. A driving mechanism is provided on the top surface of the box body 1, and the driving mechanism is drivingly connected to the electroceramic insulator. First L-shaped frames 3 and second L-shaped frames 6 are oppositely provided on the top surface of the box body 1. The moving mechanism is arranged on the first L-shaped frame 3, and a non-contact temperature sensor 29 and a pressure measuring mechanism are provided on its side. The pressure measuring mechanism is used to detect the voltage difference at different heights of the electroceramic insulator. The detection direction of the non-contact temperature sensor 29 faces the electroceramic insulator. A second lead screw 7 is rotatably arranged on the second L-shaped frame 6. One end of the second lead screw 7 is rotatably connected to the box body 1, and the other end passes through the second L-shaped frame 6 and is drivingly connected to a third motor 16. The third motor 16 is arranged on the top surface of the second L-shaped frame 6. The third motor 16 is a stepper motor that can accurately control the rotation angle. A second moving block 41 is arranged on the second lead screw 7. A cleaning mechanism is provided on the side of the second moving block 41. A rotating plate 12 is rotatably arranged on the top surface of the cleaning mechanism. The rotating plate 12 is connected to the top surface of the cleaning mechanism through a first electric push rod 13. A second electric push rod 14 is arranged on the bottom surface of the rotating plate 12. A support plate 30 is arranged at the telescopic end of the second electric push rod 14. An air-liquid pump 9 is arranged on the top surface of the second L-shaped frame 6. The air-liquid pump 9 is connected to a spray pipe 31 through a pressure pipe 11. The spray pipe 31 is arranged on the bottom surface of the support plate 30. A radio receiver 33 is also arranged on the bottom surface of the support plate 30. The air-liquid pump 9 is connected to the bottom of the box body 1 through a connecting pipe 47. A three-way valve 10 is arranged on the connecting pipe 47. The controller 20 is arranged on the side of the box body 1 and is electrically connected to the moving mechanism, the non-contact temperature sensor 29, the pressure measuring mechanism, the driving mechanism, the third motor 16, the cleaning mechanism, the first electric push rod 13, the second electric push rod 14, the air-liquid pump 9, the radio receiver 33, and the three-way valve 10. The controller 20 uses a low-power microprocessor with the model STM32-L0.

[0032] A high-voltage power line passes through the middle of the porcelain insulator, and the high-voltage power line is connected to electrical equipment such as a transformer in the box body 1. When the electrical equipment works, the driving mechanism and the moving mechanism are started simultaneously. The driving mechanism drives the porcelain insulator to rotate continuously, and the moving mechanism drives the pressure measuring mechanism to move up and down. The pressure measuring mechanism is used to detect the voltage difference at different heights of the porcelain insulator, and judge whether the porcelain insulator is in a normal working state according to the voltage difference. When it is detected that the voltage difference exceeds the preset value, the third motor 16 is started. The third motor 16 rotates to drive the second lead screw 7 to rotate. The second lead screw 7 rotates to drive the second moving block 41 to move along the axis of the second lead screw 7. The movement of the second moving block 41 drives the cleaning mechanism to move, and then the cleaning mechanism is started to clean the porcelain insulator. After the cleaning operation is completed, the gas-liquid pump 9 is started. The gas-liquid pump 9 pumps out the coolant stored in the box body 1. The coolant is a coolant with insulation and arc extinguishing properties. The coolant enters the pressure pipe 11 through the connecting pipe 47, then enters the spray pipe 31 from the pressure pipe 11, and finally sprays out from the spray pipe 31 to impact the surface of the porcelain insulator to complete the cleaning operation; after the cleaning operation is completed, the pressure measuring mechanism is started again to detect the porcelain insulator. After the pressure difference is within the normal range, the cleaning mechanism is stopped; at the same time, the non-contact temperature sensor 29 moves under the drive of the moving mechanism to monitor the temperature of the outer surface of the porcelain insulator. When it is detected that the temperature of the porcelain insulator exceeds the preset value, the detection signal is sent to the controller 20. The controller 20 starts the gas-liquid pump 9. The gas-liquid pump 9 pumps out the coolant stored in the box body 1. The coolant enters the pressure pipe 11 through the connecting pipe 47, then enters the spray pipe 31 from the pressure pipe 11, and finally sprays out from the spray pipe 31. The coolant continuously flows downward from the top of the porcelain insulator, thereby taking away the heat on the porcelain insulator and reducing the temperature of the porcelain insulator. When the temperature of the porcelain insulator is normal, the three-way valve 10 is started. The three-way valve 10 closes one end of the connecting pipe 47 and simultaneously connects to the external air connection end. The gas-liquid pump 9 pumps air into the pressure pipe 11. The air enters the spray pipe 31 from the pressure pipe 11 and sprays out from the spray pipe 31 to continuously impact the outer surface of the porcelain insulator, thereby cleaning the coolant and avoiding residue. When the air sprays out from the spray pipe 31 and cracks appear on the surface of the porcelain insulator, when the air quickly passes through the crack gap, due to the limitation of the gap, the propagation path of the sound wave becomes narrow, and the wavelength λ of the sound wave will shorten. According to the relationship of v = f×λ, when the speed v remains unchanged and the wavelength λ shortens, in order to maintain the equation balance, the frequency f will increase. The radio receiver 33 detects the sound frequency of the air flow in real time, and can judge that cracks have occurred on the surface of the porcelain insulator according to the sound frequency, so as to replace the porcelain insulator in time and avoid electric leakage accidents.

[0033] Preferably, the moving mechanism includes a first lead screw 4, a first motor 5, and a first moving block 23. The first lead screw 4 is rotatably arranged on the first L-shaped frame 3, one end of which is rotatably arranged on the top of the box body 1, and the other end passes through the first L-shaped frame 3 and is drivingly connected to the first motor 5. The first motor 5 is arranged on the top surface of the first L-shaped frame 3, and the first motor 5 is a stepper motor that can accurately control the rotation angle.

[0034] The moving mechanism is used to drive the pressure measuring mechanism and the non-contact temperature sensor 29 to move up and down. When the moving mechanism works, first start the first motor 5. The rotation of the first motor 5 drives the rotation of the first lead screw 4. The rotation of the first lead screw 4 drives the first moving block 23 to move along the axis of the first lead screw 4, and the movement of the first moving block 23 realizes the up and down movement of the pressure measuring mechanism and the non-contact temperature sensor 29.

[0035] Preferably, the pressure measuring mechanism includes a second motor 8, a driving bevel gear 25, a driven bevel gear 26, a first rotating shaft 17, and a contact rod 28. The second motor 8 is arranged on the bottom surface of the first moving block 23, and its output shaft is sleeved with the driving bevel gear 25. The first rotating shaft 17 is rotatably arranged on the first moving block 23, and both ends thereof are located on the top surface and the bottom surface of the first moving block 23 respectively. Contact rods 28 parallel to each other are respectively arranged at both ends of the first rotating shaft 17, and the driven bevel gear 26 is sleeved on the first rotating shaft 17 and meshes with the driving bevel gear 25.

[0036] The pressure measuring mechanism is used to detect the voltage between two adjacent skirt umbrellas on the porcelain insulator, so as to judge whether the porcelain insulator is in a normal working state. When the high-voltage incoming line is working normally, start the moving mechanism, and the moving mechanism drives the pressure measuring mechanism to move. First, start the second motor 8. The rotation of the second motor 8 drives the driving gear 39 to rotate, the driving gear 39 drives the driven gear 40 to rotate, the driven gear 40 drives the first rotating shaft 17 to rotate, thereby driving the contact rod 28 to rotate, and making the contact rod 28 contact the top and the bottom of the skirt umbrella of the electromagnetic insulator respectively.

[0037] Preferably, the porcelain insulator includes an insulating skirt part 21, an inner sleeve 22, an inner bearing 34, and an outer bearing 35. The outer bearing 35 is sleeved on the bottom of the insulating skirt part 21 and installed on the water collecting tray. A through hole is provided in the insulating skirt part 21, and the inner sleeve 22 is rotatably arranged in the through hole through the inner bearing 34.

[0038] A high-voltage power line passes through the middle of the porcelain insulator, and the high-voltage power line is connected to electrical equipment such as a transformer in the box body 1. When the electrical equipment works, the moving mechanism and the driving mechanism are started at the same time. The driving mechanism drives the insulating umbrella skirt 21 to rotate. The non-contact temperature sensor 29 and the cleaning mechanism can comprehensively scan and clean the outer surface of the porcelain insulator. At this time, the high-voltage power line passes through the inner sleeve 22 and remains stationary, without affecting the normal operation of the high-voltage power line.

[0039] Preferably, it further includes an internal circulation heat dissipation mechanism. The internal circulation heat dissipation mechanism includes a sealing ring 44, a first conduit 42, a second conduit 43, and a circulation pump 48. The top of the porcelain insulator passes through the top of the frame 49 and relatively rotatably sleeved with sealing rings 44 at both the upper and lower ends. A through hole is provided in the middle of the sealing ring 44, and a first annular groove 45 is provided on the inner wall of the through hole. Second annular grooves 46 are respectively provided at the upper and lower ends of the insulating umbrella skirt 21. A spiral channel 36 is provided inside the insulating umbrella skirt 21. The spiral channel 36 is respectively communicated with the upper and lower second annular grooves 46. The first annular groove 45 and the second annular groove 46 are communicated with each other. The sealing ring 44 is communicated with the accommodation cavity in the box body 1 through the first conduit 42. A circulation pump 48 is provided on the first conduit 42. The circulation pump 48 is provided on the top surface of the frame 49. The sealing ring 44 is communicated with the accommodation cavity through the second conduit 43.

[0040] The internal circulation heat dissipation mechanism is used to dissipate heat inside the electromagnetic insulator. When the pressure measuring mechanism detects that the temperature of the electromagnetic insulator is higher than the preset value, the circulation pump 48 is started. The circulation pump 48 pumps out the coolant in the accommodation cavity in the box body 1, so that the coolant continuously flows into the first annular groove 45 through the first conduit 42, enters the second annular groove 46 from the first annular groove 45, then enters the spiral channel 36 from the second annular groove 46, and then flows through the spiral channel 36 into the second annular groove 46 at the lower end, and enters the lower first annular groove 45 from the second annular groove 46, and then flows into the accommodation cavity from the first annular groove 45 through the second conduit 43.

[0041] Preferably, the cleaning mechanism includes a third electric push rod 19, a U-shaped frame 15, a second rotating shaft 27, a fourth motor 24, and a brush 18. The third electric push rod 19 is provided on the side of the second moving block 41, and its telescopic end is connected to the side of the U-shaped frame 15. The second rotating shaft 27 is rotatably provided on the U-shaped frame 15. One end of it is rotatably provided on the U-shaped frame 15, and the other end passes through the U-shaped frame 15 and is drivingly connected to the fourth motor 24. The fourth motor 24 is provided on the bottom surface of the U-shaped frame 15. The brush 18 is sleeved on the second rotating shaft 27.

[0042] When the cleaning mechanism works, first start the fourth motor 24. The rotation of the fourth motor 24 drives the rotation of the second rotating shaft 27, and the rotation of the second rotating shaft 27 drives the rotation of the brush bristles 18. Then start the third electric push rod 19. The telescopic end of the third electric push rod 19 extends to drive the U-shaped frame 15 to move. The movement of the U-shaped frame 15 drives the brush bristles 18 to approach and abut against the outer surface of the porcelain insulator, so as to clean the outer surface of the porcelain insulator.

[0043] Preferably, the driving mechanism includes a fifth motor 38, a driving gear 39 and a driven gear 40. The third motor 16 is arranged on the top surface of the water collecting tray 2, and its output shaft is provided with the driving gear 39. The driven gear 40 is sleeved on the lower end of the porcelain insulator, and the driven gear 40 meshes with the driving gear 39.

[0044] The driving mechanism is used to drive the porcelain insulator to rotate. When the driving mechanism works, first start the fifth motor 38. The rotation of the fifth motor 38 drives the driving gear 39, and the rotation of the driving gear 39 drives the driven gear 40. The driven gear 40 is sleeved on the lower end of the porcelain insulator, so as to drive the porcelain insulator to rotate.

[0045] Preferably, it further includes a water collecting tray 2. The water collecting tray 2 is arranged on the top surface of the box body 1 and is located below the porcelain insulator. A water return hole 37 is provided at the bottom of the water collecting tray 2, and the water return hole 37 is communicated with the box body 1.

[0046] The water collecting tray 2 is arranged on the top surface of the box body 1 and is located below the porcelain insulator. After the coolant cools the porcelain insulator, it drips from the insulator into the water collecting tray 2 and flows back into the box body 1 through the water return hole 37 at the bottom of the water collecting tray 2, and can be recycled repeatedly, improving the utilization rate of the coolant.

[0047] Preferably, it further includes a distance sensor 32. The distance sensor 32 is arranged on the bottom surface of the support plate 30 and is electrically connected to the controller 20.

[0048] The distance sensor 32 is arranged on the bottom surface of the support plate 30. When the telescopic end of the second electric push rod 14 extends to drive the support plate 30 to approach the porcelain insulator, the spray pipe 31 approaches the porcelain insulator along with the support plate 30. The distance sensor 32 detects the distance between the spray pipe 31 and the surface of the porcelain insulator in real time, ensuring that a preset distance is maintained between the spray pipe 31 and the porcelain insulator, which is beneficial to the consistency of the airflow sound detection by the sound receiver 33, improves the reliability of the sound detection, and at the same time avoids potential collision risks.

[0049] Preferably, it further includes an outer bearing 35. The outer bearing 35 is sleeved on the bottom end of the porcelain insulator, and the porcelain insulator is rotatably arranged on the top of the box body 1 through the outer bearing 35.

[0050] The outer bearing 35 is sleeved on the bottom end of the porcelain insulator, enabling the porcelain insulator to rotate relative to the top of the box body 1. The outer bearing 35 can effectively reduce the friction force, improve the flexibility of the porcelain insulator, and extend its service life.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electric porcelain insulator with overheat protection, characterized in that, It includes a box body, an electric porcelain insulator, a moving mechanism and a controller. A frame is provided on the side of the box body. The electric porcelain insulator is rotatably arranged between the box body and the frame. A high-voltage power line passes through the middle of the electric porcelain insulator. A driving mechanism is provided on the top surface of the box body, and the driving mechanism is drivingly connected to the electric porcelain insulator. A first L-shaped frame and a second L-shaped frame are oppositely provided on the top surface of the box body. The moving mechanism is arranged on the first L-shaped frame, and a non-contact temperature sensor and a pressure measuring mechanism are provided on its side. The pressure measuring mechanism is used to detect the voltage difference at different heights of the electric porcelain insulator. The detection direction of the non-contact temperature sensor faces the electric porcelain insulator. A second lead screw is rotatably arranged on the second L-shaped frame. One end of the second lead screw is rotatably connected to the box body, and the other end passes through the second L-shaped frame and is drivingly connected to a third motor. The third motor is arranged on the top surface of the second L-shaped frame. A second moving block is provided on the second lead screw. A cleaning mechanism is provided on the side of the second moving block. A rotating plate is rotatably arranged on the top surface of the cleaning mechanism. The rotating plate is connected to the top surface of the cleaning mechanism through a first electric push rod. A second electric push rod is provided on the bottom surface of the rotating plate. A support plate is provided at the telescopic end of the second electric push rod. An air-liquid pump is provided on the top surface of the second L-shaped frame. The air-liquid pump is connected to a spray pipe through a pressure pipe. The spray pipe is arranged on the bottom surface of the support plate. A sound receiver is also provided on the bottom surface of the support plate. The air-liquid pump is connected to the bottom of the box body through a connecting pipe. A three-way valve is provided on the connecting pipe. The controller is arranged on the side of the box body and is electrically connected to the moving mechanism, the non-contact temperature sensor, the pressure measuring mechanism, the driving mechanism, the third motor, the cleaning mechanism, the first electric push rod, the second electric push rod, the air-liquid pump, the sound receiver and the three-way valve.

2. The electroceramic insulator with overheat protection according to claim 1, characterized in that, The moving mechanism includes a first lead screw, a first motor and a first moving block. The first lead screw is rotatably arranged on the first L-shaped frame. One end of it is rotatably arranged on the top of the box body, and the other end passes through the first L-shaped frame and is drivingly connected to the first motor. The first motor is arranged on the top surface of the first L-shaped frame.

3. The electro-ceramic insulator with overheat protection according to claim 2, wherein, The pressure measuring mechanism includes a second motor, a driving bevel gear, a driven bevel gear, a first rotating shaft and a contact rod. The second motor is arranged on the bottom surface of the first moving block, and its output shaft is sleeved with the driving bevel gear. The first rotating shaft is rotatably arranged in the first moving block, and its two ends are respectively located on the top surface and the bottom surface of the first moving block. Contact rods parallel to each other are respectively provided at the two ends of the first rotating shaft. The driven bevel gear is sleeved on the first rotating shaft and meshes with the driving bevel gear.

4. The electro-ceramic insulator with overheat protection according to claim 1, wherein, The electric porcelain insulator includes an insulating umbrella skirt part, an inner sleeve and an inner bearing. A through hole is provided in the insulating umbrella skirt part, and the upper and lower ends of the inner sleeve are rotatably arranged in the through hole through the inner bearing.

5. The electro-ceramic insulator with overheat protection according to claim 4, characterized in that, It further includes an internal circulation heat dissipation mechanism. The internal circulation heat dissipation mechanism includes a sealing ring, a first conduit, a second conduit, and a circulation pump. The top of the porcelain insulator passes through the top of the frame, and sealing rings are relatively rotatably sleeved on the upper and lower ends thereof. A through hole is provided in the middle of the sealing ring, and a first annular groove is provided on the inner wall of the through hole. Annular grooves are respectively provided at the upper and lower ends of the insulating umbrella skirt. A spiral channel is provided inside the insulating umbrella skirt, and the spiral channel is respectively communicated with the upper and lower annular grooves. The first annular groove and the annular grooves are communicated with each other. The sealing ring is communicated with the accommodation cavity in the box body through the first conduit, and a circulation pump is provided on the first conduit. The circulation pump is arranged on the top surface of the frame. The sealing ring is communicated with the accommodation cavity through the second conduit.

6. The electroceramic insulator with overheat protection according to claim 1, wherein The cleaning mechanism includes a third electric push rod, a U-shaped frame, a second rotating shaft, a fourth motor, and a brush. The third electric push rod is arranged on the side of the second moving block, and its telescopic end is connected to the side of the U-shaped frame. The second rotating shaft is rotatably arranged on the U-shaped frame, one end of which is rotatably arranged on the U-shaped frame, and the other end passes through the U-shaped frame and is drivingly connected to the fourth motor. The fourth motor is arranged on the bottom surface of the U-shaped frame, and the brush is sleeved on the second rotating shaft.

7. An electro-ceramic insulator with overheat protection according to claim 1, characterized in that, The driving mechanism includes a fifth motor, a driving gear, and a driven gear. The fifth motor is arranged on the top surface of the box body, and a driving gear is provided on its output shaft. The driven gear is sleeved on the lower end of the porcelain insulator, and the driven gear meshes with the driving gear.

8. The electro-ceramic insulator with overheat protection according to claim 1, characterized in that, It further includes a water collecting tray. The water collecting tray is arranged on the top surface of the box body and is located below the porcelain insulator. A water return hole is provided at the bottom of the water collecting tray, and the water return hole is communicated with the box body.

9. The electro-ceramic insulator with overheat protection according to claim 1, characterized in that, It further includes a distance sensor. The distance sensor is arranged on the bottom surface of the support plate and is electrically connected to the controller.

10. A porcelain insulator with overheat protection according to claim 1, characterized in that, It further includes an outer bearing. The outer bearing is sleeved on the bottom end of the porcelain insulator, and the porcelain insulator is rotatably arranged on the top of the box body through the outer bearing.

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