High-voltage motor with intelligent monitoring function

By installing the sliding block of the temperature sensor and the infrared distance sensor in the high-voltage motor, the circumferential scanning of the stator winding and the acquisition of the thermal distribution map are solved, and the problem of rapid positioning of the fault position in the prior art is solved, and the efficiency of fault judgment and maintenance is improved.

CN119519272AInactive Publication Date: 2025-02-25JIANGSU YINGLONG HIGH VOLTAGE MOTOR MFG CO
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Patent Information

Application Number
CN202411691480.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-02-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The monitoring devices of existing high-voltage motors cannot quickly locate the specific location of the electronic winding fault, affecting subsequent fault judgment and maintenance.

Method used

A high-voltage motor with intelligent monitoring function is designed. By installing a sliding block with a temperature sensor, a bar frame, a guide groove and a right end cover connected to the rotor roller, the first temperature sensor makes a circumferential scanning motion outside the stator winding, and a thermal distribution diagram of the stator winding is obtained by combining an infrared distance sensor and a photoelectric encoder to determine the sensor position.

Benefits of technology

It realizes rapid positioning of abnormal heating positions of the stator winding, improves the accuracy of fault judgment and timely warning, and facilitates subsequent disposal and maintenance.

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Abstract

The invention relates to a high-voltage motor with an intelligent monitoring function in the field of electrical fault detection devices, which comprises a sliding block provided with a temperature sensor, a strip-shaped frame for the sliding block to transversely slide, an outer cylinder provided with a guide groove, and a right end cover fixedly connected with the strip-shaped frame and linked with a rotor roller, the first temperature sensor is arranged on the outer side of the stator winding in a sleeving mode to conduct circular scanning motion, scanning temperature measurement is conducted on all positions of the stator winding, and the abnormal heating phenomenon of the stator winding can be found conveniently; and by combining the real-time temperature measured at the real-time position, a thermal distribution diagram in the circumferential direction when the stator winding runs is further obtained, so that monitoring personnel can conveniently judge a fault reason and determine an abnormal heating position, the timeliness and accuracy of early warning are improved, and subsequent treatment and maintenance are facilitated.
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Description

Technical Field

[0001] The invention relates to a high-voltage motor, in particular to a high-voltage motor with an intelligent monitoring function applied in the field of electrical fault detection devices. Background Art

[0002] During the operation of high-voltage motors, the insulation performance of their electrical windings often deteriorates due to aging, which in turn causes abnormal temperature rise. Traditional high-voltage motor monitoring equipment mainly relies on the collection of current and voltage signals as the basis for fault diagnosis. However, this method has limitations in accurately identifying the specific location of abnormal heating in the stator winding, which affects the accuracy of fault judgment and subsequent maintenance and repair work.

[0003] The existing patent with publication number CN113985234B discloses an online monitoring and identification system for partial discharge of motor stator winding based on hybrid sensing, including: a hybrid sensing device, a data acquisition module and a data processing module; the hybrid sensing device is used to collect three phase-separated high-frequency current signals and three-phase high-frequency current signals of the stator winding of the rotating motor; the data acquisition module is used to extract characteristic quantities of the signals collected by the hybrid sensing device; the data processing module separates the phase-to-phase partial discharge signal and the ground partial discharge signal based on the characteristic quantities extracted by the data acquisition module. The present invention not only pre-processes different partial discharge signals in the sensing link, reducing the difficulty of processing the monitoring signal, but also realizes the separation and identification of different partial discharge signals with lower computing resources, which is not only conducive to identifying the causes of insulation degradation of the rotating motor, but also conducive to improving the reliability of the motor and the overall efficiency of industrial production.

[0004] In the above patent, three-phase high-frequency current signals and three-phase high-frequency current signals of the stator winding of the rotating motor are collected and the characteristics of the electrical signals are analyzed to perform fault judgment. However, the fault position on the stator winding cannot be quickly located. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing monitoring device of high-voltage motor cannot quickly locate the specific location of the electronic winding fault, which affects the subsequent fault judgment and maintenance.

[0006] In order to solve the above problems, the present invention provides a high-voltage motor with intelligent monitoring function, comprising a housing, a rotor roller installed at the central axis position of the housing, and a stator winding sleeved on the outside of the rotor roller, a monitoring cylinder sleeved on the outside of the stator winding, the monitoring cylinder comprising an inner cylinder fixedly sleeved on the outside of the stator winding and an outer cylinder sleeved on the outside of the inner cylinder, an annular gap is formed between the outer cylinder and the inner cylinder, a left end cover fixedly connected to the inner cylinder and the outer cylinder is provided on the left side of the annular gap, a right end cover rotatably connected to the inner cylinder and the outer cylinder is provided on the right side of the annular gap, the right end cover is connected to the rotor roller for transmission through a reduction gear set, and the rotor roller drives the right end cover to rotate in a circle through the reduction gear set;

[0007] A strip frame arranged parallel to the inner cylinder is fixedly connected to the inner wall of the right end cover on the side facing the left end cover, a sliding block is slidably connected to the strip frame, a first temperature sensor facing the inner cylinder is nested in the sliding block, a sliding column is fixedly connected to the outer end of the sliding block, and a guide groove for the sliding column to slide is provided on the inner wall of the outer cylinder. When the right end cover rotates in a circle, the strip frame and the sliding block thereon are driven to rotate in a circle. At the same time, with the cooperation of the sliding column and the guide groove, the sliding block moves back and forth horizontally on the strip frame, thereby driving the first temperature sensor to perform a circular reciprocating scanning action on the outer wall of the inner cylinder;

[0008] An infrared distance sensor is arranged inside the bar frame and is arranged opposite to the sliding block. A photoelectric encoder is installed outside the right end cover. Both the infrared distance sensor and the photoelectric encoder are electrically connected to the same controller, and the controller is connected to an external control computer through a communication module.

[0009] In the above-mentioned high-voltage motor with intelligent monitoring function, the position of abnormal heating of the stator winding can be quickly located by installing a first temperature sensor and performing a sliding block that performs a circular scanning motion.

[0010] As a further improvement of the present application, the rotor roller is located on the left side of the monitoring tube and is fixedly connected to a heat dissipation impeller, a heat dissipation hole is provided at the left end of the shell, an air inlet hole connected to the annular gap is provided on the left end cover, an exhaust hole connected to the annular gap is provided on the right end cover, and an air collecting cylinder is fixedly connected to the right side of the outer tube, the exhaust hole is connected to the air collecting cylinder, and the right side of the air collecting cylinder is connected to the external atmosphere through an exhaust pipe.

[0011] As a further improvement of the present application, the reduction gear group includes a gear ring fixedly connected to the outer wall of the right end cover, a transmission gear is meshed on the inner side of the gear ring, the transmission gear is rotatably connected to a bearing through an installation shaft, the bearing is fixedly connected to the outer wall of the inner cylinder, the outer end of the transmission gear is meshed with a sleeve gear that is sleeved with the rotor roller, and a second temperature sensor and a flow rate sensor are installed in the exhaust pipe. The sleeve gear includes a gear cylinder and an electromagnetic clutch installed inside it, and the second temperature sensor, the flow rate sensor, and the electromagnetic clutch are all electrically connected to the controller.

[0012] As a further improvement of the present application, the inner cylinder and the outer cylinder are both cylindrical structures with openings at both ends, the left end cover and the right end cover are both annular structures, the outer cylinder is fixedly connected to the inner wall of the shell, the inner cylinder is made of magnetic isolation and heat conductive material, and the left end cover and the right end cover are made of insulating material.

[0013] As a further improvement of the present application, the bar frame is provided with a rectangular channel for the sliding block to slide, and the infrared distance sensor is fixed on the inner wall at one end of the rectangular channel.

[0014] As a further improvement of the present application, the upper end face of the sliding block slides in abutment with the inner wall of the outer tube, the lower end face of the sliding block slides in abutment with the outer wall of the inner tube, the sliding column is fixed at the center position of the upper end face of the sliding block, a columnar groove with an opening facing downward is opened at the lower part of the sliding block, and the first temperature sensor is fixed in the columnar groove.

[0015] As a further improvement of the present application, the guide groove is an annular wave groove, the lateral width of the annular wave groove is greater than the lateral width of the inner tube, the annular wave groove is a groove with a semicircular cross-section, the outer end of the sliding column is hemispherical, and the sliding column is slidably connected in the annular wave groove.

[0016] As a further improvement of the present application, the electromagnetic clutch includes a movable friction ring nested in the gear cylinder and laterally slidingly connected thereto, an electromagnetic cylinder is sleeved on the left side of the movable friction ring, and a fixed friction ring is provided on the right side of the movable friction ring opposite to the gear cylinder and fixedly sleeved on the rotor roller, the gear cylinder is rotatably connected to a bearing, the bearing is fixedly connected to the outer wall of the inner cylinder, the outer wall of the movable friction ring is provided with a clamping block slidingly engaged with the inner wall of the gear cylinder, the gear cylinder is provided with a transverse sliding groove for the clamping block to slide laterally, an electromagnetic coil is provided in the electromagnetic cylinder, and a permanent magnet is nested in the movable friction ring.

[0017] In summary, the present invention uses a sliding block equipped with a temperature sensor, a strip frame for the sliding block to slide horizontally, an outer cylinder with a guide groove, and a right end cover fixedly connected to the strip frame and linked to the rotor roller, so that the first temperature sensor is sleeved on the outside of the stator winding to perform a circular scanning motion, and various positions of the stator winding are scanned and measured for temperature, so as to facilitate the discovery of abnormal heating of the stator winding. At the same time, the real-time position of the first temperature sensor is determined by an infrared distance sensor and a photoelectric encoder, and the real-time temperature measured at the real-time position is combined to obtain a thermal distribution map along the circumferential direction of the stator winding during operation, so as to facilitate monitoring personnel to determine the cause of the fault and determine the abnormal heating position, improve the timeliness and accuracy of the early warning, and facilitate subsequent disposal and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the internal structure of the shell in this application;

[0019] Figure 2 This is a schematic diagram of the transverse cross-sectional structure of the present application;

[0020] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 5 for Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0023] Figure 6 It is a schematic diagram of the state of the electromagnetic clutch in the sleeve gear when it is closed and transmitted;

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the monitoring tube in this application;

[0025] Figure 8 This is a schematic diagram of the explosion cross-sectional structure of the monitoring tube in this application;

[0026] Fig. 9 This is a schematic diagram of the assembly structure of the sliding block and the bar frame in this application;

[0027] Fig.10 This is a schematic diagram of the sliding motion state in this application;

[0028] Fig.11 This is a schematic diagram of the flow of air in the motor in this application;

[0029] Fig.12 It is a schematic diagram of the three-dimensional structure of this application.

[0030] Description of the numbers in the figure:

[0031] 1. Shell; 101. Heat dissipation hole; 2. Rotor roller; 3. Stator winding; 4. Monitoring tube; 5. Inner tube; 6. Outer tube; 601. Guide groove; 7. Left end cover; 701. Air inlet; 8. Right end cover; 801. Exhaust hole; 9. Bar frame; 901. Rectangular channel; 10. Sliding block; 11. Sliding column; 12. First temperature sensor; 13. Infrared distance sensor; 14. Gear ring; 15. Transmission gear; 16. Socket gear; 17. Photoelectric encoder; 18. Heat dissipation impeller; 19. Gas collecting tube; 20. Exhaust pipe; 21. Flow rate sensor; 22. Second temperature sensor; 23. Controller; 24. Gear tube; 25. Fixed friction ring; 26. Moving friction ring; 27. Electromagnetic tube. DETAILED DESCRIPTION

[0032] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0033] The first implementation method:

[0034] Figure 1-10 A high-voltage motor with intelligent monitoring function is shown, comprising a housing 1, a rotor roller 2 installed at the central axis position of the housing 1, and a stator winding 3 sleeved on the outside of the rotor roller 2. A monitoring cylinder 4 is sleeved on the outside of the stator winding 3. The monitoring cylinder 4 comprises an inner cylinder 5 fixedly sleeved on the outside of the stator winding 3 and an outer cylinder 6 sleeved on the outside of the inner cylinder 5. An annular gap is formed between the outer cylinder 6 and the inner cylinder 5. A left end cover 7 fixedly connected to the inner cylinder 5 and the outer cylinder 6 is provided on the left side of the annular gap. A right end cover 8 rotatably connected to the inner cylinder 5 and the outer cylinder 6 is provided on the right side of the annular gap. The right end cover 8 is connected to the rotor roller 2 for transmission through a reduction gear set. The rotor roller 2 drives the right end cover 8 to rotate in a circle through the reduction gear set.

[0035] A bar frame 9 arranged parallel to the inner cylinder 5 is fixedly connected to the inner wall of the right end cover 8 facing the left end cover 7, a sliding block 10 is slidably connected to the bar frame 9, a first temperature sensor 12 facing the inner cylinder 5 is nested in the sliding block 10, a sliding column 11 is fixedly connected to the outer end of the sliding block 10, and a guide groove 601 for the sliding column 11 to slide is provided on the inner wall of the outer cylinder 6. When the right end cover 8 rotates in a circle, the bar frame 9 and the sliding block 10 thereon are driven to rotate in a circle. At the same time, with the cooperation of the sliding column 11 and the guide groove 601, the sliding block 10 moves back and forth horizontally on the bar frame 9, thereby driving the first temperature sensor 12 to perform a circular reciprocating scanning action on the outer wall of the inner cylinder 5;

[0036] An infrared distance sensor 13 is provided on the inner side of the bar frame 9 and is arranged opposite to the sliding block 10. A photoelectric encoder 17 is installed on the outer side of the right end cover 8. Both the infrared distance sensor 13 and the photoelectric encoder 17 are electrically connected to the same controller 23. The controller 23 is connected to an external control computer through a communication module.

[0037] For details, please refer to Fig.10When the high-voltage motor is running, the rotor roller 2 rotates and drives the right end cover 8 to rotate through the reduction gear set. The right end cover 8 drives the bar frame 9 and the sliding block 10 thereon to make a circular rotation. At the same time, with the cooperation of the sliding column 11 and the guide groove 601, the sliding block 10 moves back and forth laterally on the bar frame 9 (in order to reduce the rotation speed of the right end cover 8, the reduction gear set arranged between the rotor roller 2 and the right end plate 8 is used to achieve the purpose of speed reduction transmission), thereby driving the first temperature sensor 12 to perform a circular reciprocating scanning action on the outer wall of the inner cylinder 5, perform a circular reciprocating scanning on the stator winding 3, and perform temperature detection on various parts of the stator winding 3. At the same time, the lateral position of the sliding block 10 is measured by the infrared distance sensor 13, thereby determining the horizontal position of the first temperature sensor 12 on the outside of the outer cylinder 6 The position coordinates are obtained, and the angular coordinates of the sliding block 10 on the outside of the outer cylinder 6 are measured by the photoelectric encoder 17, and then the polar coordinates of the first temperature sensor on the outer cylinder 6 are determined, so as to obtain the coordinates of each scanning point of the first temperature sensor 12 on the outer cylinder 6 and the corresponding real-time temperature value of the scanning point, and obtain the thermal distribution map of the outside of the stator winding 3. The temperature of each point is compared with the operating temperature threshold of the stator winding 3 stored in the controller 23. When the real-time operating temperature exceeds the operating temperature threshold, the controller 23 sends an alarm to the external control computer through the communication module. The operator can better judge the cause of abnormal heating and determine the abnormal heating position according to the thermal distribution map of the outside of the stator winding 3, thereby improving the judgment accuracy and facilitating the subsequent maintenance to determine the fault position of the stator winding 3.

[0038] Compared with the traditional high-voltage motor monitoring device, the present invention uses a sliding block 10 equipped with a temperature sensor 12, a bar frame 9 for the sliding block 10 to slide horizontally, an outer cylinder 6 with a guide groove 601, and a right end cover 8 fixedly connected to the bar frame 9 and linked to the rotor roller 2, so that the first temperature sensor 12 performs a circular scanning motion on the outside of the inner cylinder 5 sleeved on the outside of the stator winding 3, and scans and measures the temperature of each position of the stator winding 3, so as to facilitate the discovery of abnormal heating of the stator winding 3. At the same time, the real-time position of the first temperature sensor 12 is determined by the infrared distance sensor 13 and the photoelectric encoder 17, and the real-time temperature measured at the real-time position is combined to obtain the thermal distribution diagram along the circumferential direction of the stator winding 3 during operation, so as to facilitate the monitoring personnel to determine the cause of the fault and determine the abnormal heating position, improve the timeliness and accuracy of the early warning, and facilitate subsequent disposal and maintenance.

[0039] See also Figure 7 and Figure 8 The inner cylinder 5 and the outer cylinder 6 are both cylindrical structures with openings at both ends, the left end cover 7 and the right end cover 8 are both annular structures, the outer cylinder 6 is fixedly connected to the inner wall of the shell 1, the inner cylinder 5 is made of magnetic insulation and heat conductive material, and the left end cover 7 and the right end cover 8 are made of insulating material.

[0040] Specifically, after the stator winding 3 generates heat, the heat is transferred to the inner cylinder 5, and the first temperature sensor 12 performs a circular scanning detection on the temperature of each point on the surface of the inner cylinder 5. At the same time, the inner cylinder 5 shields the magnetic field of the stator winding 3 to reduce interference to the sensor. It should be noted that the magnetic insulation and thermal conductive material is copper metal or aluminum metal, and the insulating material is one of aluminum oxide, silicon nitrogen porcelain and silicon nitride.

[0041] See also Figure 4 and Fig. 9 The bar frame 9 is provided with a rectangular channel 901 for the sliding block 10 to slide, and the infrared distance sensor 13 is fixed on the inner wall of one end of the rectangular channel 901 .

[0042] See also Figure 4 and Figure 8 The upper end surface of the sliding block 10 slides against the inner wall of the outer tube 6, and the lower end surface of the sliding block 10 slides against the outer wall of the inner tube 5. The sliding column 11 is fixed at the center position of the upper end surface of the sliding block 10. A columnar groove with an opening facing downward is opened at the lower part of the sliding block 10, and the first temperature sensor 12 is fixed in the columnar groove.

[0043] Specifically, the sliding block 10 slides back and forth in the rectangular channel 901 of the bar frame 9 and has good stability.

[0044] See also Figure 4 and Figure 8 The guide groove 601 is an annular wave groove, the lateral width of which is greater than the lateral width of the inner tube 5, the annular wave groove is a groove with a semicircular cross-section, the outer end of the sliding column 11 is hemispherical, and the sliding column 11 is slidably connected in the annular wave groove.

[0045] Specifically, the sliding block 10 is driven by the sliding column 11 to move back and forth laterally when performing circular motion, thereby realizing circular reciprocating scanning motion.

[0046] See also Fig. 9 The reduction gear set includes a gear ring 14 fixedly connected to the outer wall of the right end cover 8, a transmission gear 15 is meshed on the inner side of the gear ring 14, the transmission gear 15 is rotatably connected to a bearing through an installation shaft, the bearing is fixedly connected to the outer wall of the inner cylinder 5, and the outer end of the transmission gear 15 is meshed with a sleeve gear 16 sleeved with the rotor roller 2.

[0047] Specifically, the rotor roller 2 drives the transmission gear 15 to rotate through the sleeve gear 16, the transmission gear 15 drives the gear ring 14 to rotate, the gear ring 14 drives the right end cover 8 to rotate, and the right end cover 8 drives the bar frame 9 to rotate.

[0048] Second implementation method:

[0049] Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.11 and Fig.12 A high-voltage motor with an intelligent monitoring function is shown. On the basis of the first embodiment, the rotor roller 2 is located on the left side of the monitoring tube 4 and is fixedly connected to a heat dissipation impeller 18. A heat dissipation hole 101 is provided at the left end of the shell 1. An air inlet hole 701 connected to the annular gap is provided on the left end cover 7. An exhaust hole 801 connected to the annular gap is provided on the right end cover 8. An air collecting tube 19 is fixedly connected to the right side of the outer tube 6. The exhaust hole 801 is connected to the air collecting tube 19. The right side of the air collecting tube 19 is connected to the external atmosphere through an exhaust pipe 20.

[0050] For details, please refer to Fig.11 By providing a heat dissipation impeller 18, the generated airflow enters the annular gap through the air inlet hole 701, and then is discharged to the outside of the shell 1 through the exhaust hole 801, the air collecting cylinder 19 and the exhaust pipe 20, thereby realizing air-cooling and heat dissipation of the inner cylinder 5. At the same time, there is no need for the airflow to directly contact the stator coil, thereby reducing the corrosion of the stator winding 3 by dust and moisture in the heat dissipation airflow, thereby protecting the stator winding 3.

[0051] See also Figure 3 and Figure 8 The gas collecting cylinder 19 is an annular cylinder with an opening at the left end. The inner end of the gas collecting cylinder 19 is in sliding contact with the right end cover 8. An annular protrusion is provided at the inner end of the gas collecting cylinder 19, and an annular groove cooperating with the annular protrusion is provided on the outer wall of the right end cover 8.

[0052] Specifically, the annular protrusion and the annular groove cooperate to improve the sealing performance when the gas collecting cylinder 19 is rotatably connected to the right end cover 8, thereby reducing air leakage.

[0053] See also Figure 3 A second temperature sensor 21 and a flow rate sensor 22 are installed in the exhaust pipe 20 , and the sleeve gear 16 includes a gear cylinder 24 and an electromagnetic clutch installed inside the gear cylinder 16 . The second temperature sensor 21 , the flow rate sensor 22 , and the electromagnetic clutch are all electrically connected to the controller 23 .

[0054] For details, please refer to Fig.11 The heat generation of the stator winding 3 within the monitoring time period is monitored by the second temperature sensor 21 and the flow rate sensor 22. When the heat generation exceeds the normal threshold, the controller 23 starts the electromagnetic clutch of the sleeve gear 16 to perform circumferential scanning temperature measurement. The heat generation exceeding the threshold is used as a trigger condition for scanning temperature measurement, and there is no need to perform continuous scanning temperature measurement, which reduces energy consumption and extends the service life of the equipment.

[0055] See also Figure 5The electromagnetic clutch includes a movable friction ring 26 nested in the gear cylinder 24 and connected to the gear cylinder 24 in a transverse sliding manner. An electromagnetic cylinder 27 is sleeved on the left side of the movable friction ring 26, and a fixed friction ring 25 is arranged opposite to the movable friction ring 26 and fixedly sleeved on the rotor roller 2 on the right side.

[0056] Specifically, the electromagnetic cylinder 27 is started, and the magnetic field generated by the electromagnetic cylinder 27 pushes the movable friction ring 26 to contact the fixed friction ring 25, thereby realizing the transmission of the fixed friction ring 25 and the movable friction ring 26, and the movable friction ring 26 drives the gear cylinder 24 to rotate synchronously, and the gear cylinder 24 drives the transmission gear 15 to rotate.

[0057] See also Figure 5 The gear cylinder 24 is rotatably connected with a bearing, and the bearing is fixedly connected to the outer wall of the inner cylinder 5. The outer wall of the movable friction ring 26 is provided with a clamping block that is slidably engaged with the inner wall of the gear cylinder 24. The gear cylinder 24 is provided with a transverse sliding groove for the clamping block to slide transversely. An electromagnetic coil is provided in the electromagnetic cylinder 27, and a permanent magnet is nested in the movable friction ring 26.

[0058] For details, please refer to Figure 6 The connection and disconnection of the clutch are achieved by the contact and disengagement of the moving friction ring 26 and the fixed friction ring 25.

[0059] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A high-voltage motor with intelligent monitoring function, characterized in that: The invention comprises a housing (1), a rotor roller (2) mounted at the central axis position of the housing (1), and a stator winding (3) sleeved on the outer side of the rotor roller (2); a monitoring cylinder (4) is sleeved on the outer side of the stator winding (3); the monitoring cylinder (4) comprises an inner cylinder (5) fixedly sleeved on the outer side of the stator winding (3) and an outer cylinder (6) sleeved on the outer side of the inner cylinder (5); an annular gap is formed between the outer cylinder (6) and the inner cylinder (5); a left end cover (7) fixedly connected to the inner cylinder (5) and the outer cylinder (6) is provided on the left side of the annular gap; a right end cover (8) rotatably connected to the inner cylinder (5) and the outer cylinder (6) is provided on the right side of the annular gap; the right end cover (8) is connected to the rotor roller (2) for transmission via a reduction gear set; the rotor roller (2) drives the right end cover (8) to rotate in a circle via the reduction gear set; A strip frame (9) arranged parallel to the inner cylinder (5) is fixedly connected to the inner wall of the right end cover (8) on the side facing the left end cover (7), a sliding block (10) is slidably connected to the strip frame (9), a first temperature sensor (12) facing the inner cylinder (5) is embedded in the sliding block (10), a sliding column (11) is fixedly connected to the outer end of the sliding block (10), and a guide groove (601) for the sliding column (11) to slide is provided on the inner wall of the outer cylinder (6). When the right end cover (8) rotates in a circle, the strip frame (9) and the sliding block (10) thereon are driven to rotate in a circle. At the same time, with the cooperation of the sliding column (11) and the guide groove (601), the sliding block (10) moves back and forth laterally on the strip frame (9), thereby driving the first temperature sensor (12) to perform a circular reciprocating scanning action on the outer wall of the inner cylinder (5); An infrared distance sensor (13) is arranged inside the bar frame (9) and is arranged opposite to the sliding block (10). A photoelectric encoder (17) is installed outside the right end cover (8). Both the infrared distance sensor (13) and the photoelectric encoder (17) are electrically connected to the same controller (23). The controller (23) is connected to an external control computer via a communication module.

2. A high voltage motor with intelligent monitoring function according to claim 1, characterized in that: The rotor roller (2) is located on the left side of the monitoring tube (4) and is fixedly connected to a heat dissipation impeller (18); a heat dissipation hole (101) is provided at the left end of the shell (1); an air inlet hole (701) connected to the annular gap is provided on the left end cover (7); an exhaust hole (801) connected to the annular gap is provided on the right end cover (8); a gas collecting tube (19) is fixedly connected to the right side of the outer tube (6); the exhaust hole (801) is connected to the gas collecting tube (19); and the right side of the gas collecting tube (19) is connected to the external atmosphere through an exhaust pipe (20).

3. A high voltage motor with intelligent monitoring function according to claim 2, characterized in that: The reduction gear set comprises a gear ring (14) fixedly connected to the outer wall of the right end cover (8), a transmission gear (15) is meshed on the inner side of the gear ring (14), the transmission gear (15) is rotatably connected to a bearing via a mounting shaft, the bearing is fixedly connected to the outer wall of the inner cylinder (5), the outer end of the transmission gear (15) is meshed with a sleeve gear (16) sleeved with the rotor roller (2), a second temperature sensor (21) and a flow rate sensor (22) arranged opposite to each other are installed in the exhaust pipe (20), the sleeve gear (16) comprises a gear cylinder (24) and an electromagnetic clutch installed therein, the second temperature sensor (21), the flow rate sensor (22) and the electromagnetic clutch are all electrically connected to the controller (23).

4. The high-voltage motor with intelligent monitoring function according to claim 1, characterized in that: The inner cylinder (5) and the outer cylinder (6) are both cylindrical structures with openings at both ends, the left end cover (7) and the right end cover (8) are both annular structures, the outer cylinder (6) is fixedly connected to the inner wall of the shell (1), the inner cylinder (5) is made of magnetic insulation and heat conductive material, and the left end cover (7) and the right end cover (8) are made of insulating material.

5. The high-voltage motor with intelligent monitoring function according to claim 1, characterized in that: The strip frame (9) is provided with a rectangular channel (901) for the sliding block (10) to slide, and the infrared distance sensor (13) is fixed on the inner wall at one end of the rectangular channel (901).

6. A high voltage motor with intelligent monitoring function according to claim 5, characterized in that: The upper end surface of the sliding block (10) abuts and slides against the inner wall of the outer cylinder (6), and the lower end surface of the sliding block (10) abuts and slides against the outer wall of the inner cylinder (5). The sliding column (11) is fixed at the center position of the upper end surface of the sliding block (10). The lower part of the sliding block (10) is provided with a columnar groove with an opening facing downward, and the first temperature sensor (12) is fixed in the columnar groove.

7. The high-voltage motor with intelligent monitoring function according to claim 1, characterized in that: The guide groove (601) is an annular wave groove, the lateral width of which is greater than the lateral width of the inner cylinder (5), the annular wave groove is a groove with a semicircular cross-section, the outer end of the sliding column (11) is hemispherical, and the sliding column (11) is slidably connected in the annular wave groove.

8. The high-voltage motor with intelligent monitoring function according to claim 3, characterized in that: The electromagnetic clutch comprises a movable friction ring (26) nested in a gear cylinder (24) and connected to the gear cylinder (24) in a transverse sliding manner. An electromagnetic cylinder (27) is sleeved on the left side of the movable friction ring (26). A fixed friction ring (25) is arranged opposite to the movable friction ring (26) and fixedly sleeved on the rotor roller (2) on the right side of the movable friction ring (26). The gear cylinder (24) is rotatably connected to a bearing, which is fixedly connected to the outer wall of the inner cylinder (5). A clamping block is provided on the outer wall of the movable friction ring (26) and is slidably clamped to the inner wall of the gear cylinder (24). The gear cylinder (24) is provided with a transverse sliding groove for the clamping block to slide transversely. An electromagnetic coil is provided in the electromagnetic cylinder (27), and a permanent magnet is nested in the movable friction ring (26).

Citation Information

Patent Citations

  • A hybrid sensing-based online monitoring and identification system for partial discharge in motor stator windings

    CN113985234B