A transformer partial discharge measurement device

Abstract

The invention discloses a transformer partial discharge measuring device, which belongs to the field of discharge monitoring technology. A sliding plate is slidably installed on the bottom inner wall of the main shell, and a detection mechanism coaxially arranged with the insulating device is arranged on the top inner wall of the main shell. A rotating frame cooperating with the traveling gear ring is rotatably arranged in the middle of the traveling gear ring; a T-shaped slot connected to the recessed part is provided at the bottom of the rotating frame; a sliding arm is slidably arranged in the T-shaped slot, and a linkage gear meshing with the traveling gear ring is rotatably arranged in the recessed part, and an engagement frame cooperating with the swing arm is fixedly arranged on the outer side of the sliding arm; multiple groups of arc plates are fixedly arranged on the outer side of the engagement frame, and multiple groups of detection elements for inspecting the insulating device are installed on the inner side of the arc plate. When the traveling motor drives the rotating frame to rotate, under the meshing of the traveling gear ring and the linkage gear, the sliding arm and the engagement frame will reciprocate relative to the T-shaped slot. The design is ingenious and effective, which can reduce the detection blind spot and improve the stability and practicality of the partial discharge measuring device.

Description

Technical Field

[0001] The invention relates to the technical field of discharge monitoring, in particular to a transformer partial discharge measuring device. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil, and the iron core (magnetic core). The main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. Partial discharge of a transformer refers to the concentration of electric fields in certain parts of the transformer, which causes the insulating medium to discharge locally under the action of the electric field. This discharge phenomenon usually does not immediately lead to insulation breakdown, but over time, it may cause the performance of the insulating material to deteriorate, and may gradually expand and eventually cause insulation damage. Any fault in the transformer may cause a large-scale power outage, so it is particularly important to detect the status of the transformer and ensure its stable operation for the stable operation of the power system. Partial discharge detection of the transformer is one of the important measures to maintain the safe operation of the transformer.

[0003] The patent application with publication number CN117929953A discloses a device for measuring partial discharge of transformers, including a transformer body and its built-in coil winding and alarm, an insulating layer is arranged outside the coil winding, and also includes: a transmission detection component, a drive component, and a flow-pushing sound-absorbing component; the number of toothed rings is three and they are respectively sleeved on the outside of the insulating layer, the lower end of the toothed ring is fixedly connected with a T-shaped slider, the T-shaped slider is slidably arranged inside the T-shaped groove, the corresponding transmission gear roller and the toothed ring are meshed, and the length of the transmission gear roller is greater than the length of the insulating layer. The valve can perform all-round dynamic monitoring of the outside of the insulating layer through the rotating toothed ring, greatly improving the detection accuracy of partial discharge phenomena, and the degree of damage to the insulating layer can be subdivided through the ball and push rod inside the toothed ring, avoiding unnecessary alarms and identifying problems in advance. At the same time, the toothed ring provides precise positioning for easy maintenance; the design on the sound insulation board not only helps to enhance heat exchange, but also optimizes the circulation of oil flow by providing additional tangential thrust, which helps to distribute the heat of the transformer more evenly and reduce the risk of overheating.

[0004] However, the above disclosed transformer discharge monitoring device has a general degree of freedom, and the gear ring is completely set outside the insulation layer, so it is not convenient to check and replace the insulation layer. In reality, the insulation layer is mostly irregular in shape, so there are some blind spots in the detection process, which is prone to safety hazards after long-term use. Summary of the invention

[0005] The purpose of the present invention is to provide a transformer partial discharge measuring device to solve the problems that the existing transformer discharge monitoring device has a general degree of freedom, the gear ring is completely sleeved on the outside of the insulation layer, so it is inconvenient to inspect and replace the insulation layer. In reality, the insulation layer is mostly irregular in shape, so there are some blind spots in the detection process, and safety hazards are prone to occur after long-term use.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a transformer partial discharge measuring device, comprising a main shell, a sliding plate is slidably mounted on the bottom inner wall of the main shell, and a symmetrical insulating device is arranged on the sliding plate; a detection mechanism coaxially arranged with the insulating device is arranged on the top inner wall of the main shell, and the detection mechanism comprises a running gear ring fixedly arranged on the top inner wall of the main shell, and a rotating frame cooperating with the running gear ring is rotatably arranged in the middle of the running gear ring; a recessed portion is arranged at the end of the rotating frame, and the rotating frame A T-slot connected to the recessed portion is provided at the bottom; a sliding arm is slidably arranged in the T-slot, a linkage gear meshing with the travel gear ring is rotatably arranged in the recessed portion, a swing arm is fixedly arranged at the bottom of the linkage gear, and an engagement frame cooperating with the swing arm is fixedly arranged on the outer side of the sliding arm; multiple groups of arc plates are fixedly arranged on the outer side of the engagement frame, and multiple groups of detection elements for inspecting the insulating equipment are installed on the inner side of the arc plates; when the arc plate rotates relative to the travel gear ring, it will also reciprocate along the rotating frame driven by the swing arm.

[0007] As a further solution of the present invention: an openable door panel is installed on the front side of the main shell, and an observation window is arranged on the door panel.

[0008] As a further solution of the present invention: a plurality of heat dissipation slots are provided on the main shell and the door panel.

[0009] As a further solution of the present invention: a symmetrical sliding groove is provided on the inner wall of the bottom of the main shell, and a sliding block cooperating with the sliding groove is fixedly provided on the bottom of the sliding plate.

[0010] As a further solution of the present invention: a handle is further provided on the top of the sliding plate.

[0011] As a further solution of the present invention: symmetrical side brackets are fixedly arranged on both sides of the rotating frame, and a cleaning gear meshing with the traveling gear ring is rotatably arranged at the end of one group of the side brackets, and a first cleaning brush is arranged at the bottom of the cleaning gear.

[0012] As a further solution of the present invention: a travel motor is also installed on the top of the main housing, and the output end of the travel motor is fixedly connected to the rotating frame.

[0013] As a further solution of the present invention: a T-shaped seat matching with the T-shaped slot is fixedly arranged on the top of the slide arm, and the slide arm is slidably arranged in the T-shaped slot through the T-shaped seat.

[0014] As a further solution of the present invention: a cleaning motor is installed at the end of another group of side brackets, a second cleaning brush is installed at the output end of the cleaning motor, and an excitation button cooperating with the sliding arm is also provided on the inner wall of the T-slot.

[0015] As a further solution of the present invention: the bristles of the second cleaning brush are longer than those of the first cleaning brush.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can slide the sliding plate through the cooperation of the slider and the slide groove, so as to facilitate the inspection and replacement of the insulating equipment. When the travel motor drives the rotating frame to rotate, the swing arm and the linkage gear are engaged with the travel gear ring and the linkage gear, and the swing arm and the linkage gear are free to rotate relative to the rotating frame. When the swing arm rotates, the sliding arm and the engagement frame will also reciprocate relative to the T-slot. At this time, the multiple groups of detection elements on the arc plate will reciprocate along the rotating frame while rotating relative to the travel gear ring. This design is ingenious and effective, which can reduce the detection blind spot and greatly improve the stability and practicality of the transformer partial discharge measurement equipment.

[0018] 2. When the rotating frame of the present invention rotates, the first cleaning brush will remove dust from the outer wall of the insulating device under the cooperation of the cleaning gear and the travel gear ring. When the sliding arm moves inward along the T-slot and squeezes the excitation button, the cleaning motor is started. Since the bristles of the second cleaning brush are longer than those of the first cleaning brush, the second cleaning brush can remove dust from the inside and gaps of the insulating device, which further improves the cleaning effect. This design improves the degree of freedom of the transformer partial discharge measurement device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 The internal three-dimensional structure of the present invention Figure 1 ;

[0022] Figure 3 It is a three-dimensional structural diagram of the sliding plate in the present invention;

[0023] Figure 4 The internal three-dimensional structure of the present invention Figure 2 ;

[0024] Figure 5 It is the three-dimensional structure of the detection mechanism in the present invention Figure 1 ;

[0025] Figure 6 It is the three-dimensional structure of the detection mechanism in the present invention Figure 2 ;

[0026] Figure 7 It is a partial three-dimensional structural diagram of the detection mechanism in the present invention.

[0027] Description of reference numerals:

[0028] 1. Main shell; 2. Door panel; 3. Observation window; 4. Heat dissipation groove; 5. Slide groove; 6. Sliding plate; 7. Sliding block; 8. Handle; 9. Insulation device; 10. Detection mechanism; 11. Traveling gear ring; 12. Traveling motor; 13. Rotating frame; 14. Side bracket; 15. Recessed part; 16. Linkage gear; 17. Swing arm; 18. T-slot; 19. Sliding arm; 20. Engaging frame; 21. Arc plate; 22. Detection element; 23. Cleaning gear; 24. First cleaning brush; 25. T-seat; 26. Cleaning motor; 27. Excitation button; 28. Second cleaning brush. DETAILED DESCRIPTION

[0029] The following will be combined with the attached Figures 1 to 7 The technical solution of the present invention is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The present invention provides a transformer partial discharge measurement device through improvement. Figure 1-Figure 7As shown, it includes a main shell 1, a sliding plate 6 is slidably mounted on the bottom inner wall of the main shell 1, and a symmetrical insulating device 9 is arranged on the sliding plate 6; a detection mechanism 10 is arranged coaxially with the insulating device 9 on the top inner wall of the main shell 1, and the detection mechanism 10 includes a running gear ring 11 fixedly arranged on the top inner wall of the main shell 1, and a rotating frame 13 cooperating with the running gear ring 11 is rotatably arranged in the middle of the running gear ring 11; a recessed portion 15 is arranged at the end of the rotating frame 13, and a T-shaped slot 18 connected to the recessed portion 15 is opened at the bottom of the rotating frame 13; A sliding arm 19 is slidably arranged in the T-slot 18, a linkage gear 16 meshing with the travel gear ring 11 is rotatably arranged in the recessed portion 15, a swing arm 17 is fixedly arranged at the bottom of the linkage gear 16, and an engagement frame 20 cooperating with the swing arm 17 is fixedly arranged on the outer side of the sliding arm 19; a plurality of groups of arc plates 21 are fixedly arranged on the outer side of the engagement frame 20, and a plurality of groups of detection elements 22 for inspecting the insulating equipment 9 are installed on the inner side of the arc plates 21; when the arc plates 21 rotate relative to the travel gear ring 11, they will also reciprocate along the rotating frame 13 driven by the swing arm 17.

[0031] In this embodiment: the transformer partial discharge measurement device is mainly divided into three parts: the main housing 1, the insulation device 9 and the detection mechanism 10. When the device is in use, when the insulation device 9 needs to be installed, the sliding plate 6 is pulled by the handle 8 and the sliding plate 6 is installed inside the main housing 1. At this time, the arc plate 21 will not interfere with the insulation device 9. Then start the travel motor 12. When the travel motor 12 drives the rotating frame 13 to rotate, under the meshing of the travel gear ring 11 and the linkage gear 16, the swing arm 17 and the linkage gear 16 rotate freely relative to the rotating frame 13. When the swing arm 17 rotates, the sliding arm 19 and the meshing frame 20 will also reciprocate relative to the T-slot 18. At this time, the multiple groups of detection elements 22 on the arc plate 21 will reciprocate along the rotating frame 13 while rotating relative to the travel gear ring 11, which greatly reduces the detection blind spot. When the rotating frame 13 rotates, the cleaning gear 23 rotates relative to the rotating frame 13 under the cooperation of the cleaning gear 23 and the traveling gear ring 11, and the first cleaning brush 24 removes dust from the outer wall of the insulating device 9. When the swing arm 17 rotates, the sliding arm 19 and the meshing frame 20 also reciprocate relative to the T-slot 18. When the sliding arm 19 moves inward along the T-slot 18 and presses the trigger button 27, the cleaning motor 26 is started, and the second cleaning brush 28 removes dust from the inside and gaps of the insulating device 9.

[0032] See attached Figure 1 An openable door panel 2 is installed on the front side of the main housing 1, and an observation window 3 is provided on the door panel 2.

[0033] In this embodiment, in order to facilitate observation of the operation inside the device, an observation window 3 is designed. In order to further facilitate inspection and replacement of the insulating device 9, an openable door panel 2 is designed.

[0034] See attached Figure 1 -Attached Figure 2 A plurality of heat dissipation slots 4 are provided on the main housing 1 and the door panel 2 .

[0035] In this embodiment, in order to timely discharge the heat generated by the insulating device 9 and improve the overall heat dissipation capacity of the device, a heat dissipation slot 4 structure is designed.

[0036] See attached Figure 2 -Attached Figure 3 A symmetrical slide groove 5 is provided on the bottom inner wall of the main housing 1 , a slider 7 cooperating with the slide groove 5 is fixedly provided at the bottom of the sliding plate 6 , and a handle 8 is also provided on the top of the sliding plate 6 .

[0037] In this embodiment, in order to facilitate the pulling of the insulating device 9, so as to facilitate the maintenance and replacement, a sliding groove 5 and a sliding block 7 that cooperate with each other are designed. In order to facilitate the pulling of the sliding plate 6, a handle 8 is designed.

[0038] See attached Figure 5 -Attached Figure 7 Symmetrical side brackets 14 are fixedly arranged on both sides of the rotating frame 13, and a cleaning gear 23 meshing with the traveling gear ring 11 is rotatably arranged at the end of one group of side brackets 14, and a first cleaning brush 24 is arranged at the bottom of the cleaning gear 23.

[0039] In this embodiment, when the rotating frame 13 rotates, the cleaning gear 23 rotates relative to the rotating frame 13 under the cooperation of the cleaning gear 23 and the traveling gear ring 11 , and the first cleaning brush 24 removes dust from the outer wall of the insulating device 9 .

[0040] See attached Figure 1 and attached Figure 5 -Attached Figure 6 A travel motor 12 is also installed on the top of the main housing 1 , and the output end of the travel motor 12 is fixedly connected to the rotating frame 13 .

[0041] In this embodiment, in order to drive the rotating frame 13 to rotate, thereby realizing partial discharge detection and cleaning of the insulating device 9 , the output end of the travel motor 12 is fixedly connected to the rotating frame 13 .

[0042] See attached Figure 6 A T-shaped seat 25 matching the T-shaped slot 18 is fixedly arranged on the top of the slide arm 19 , and the slide arm 19 is slidably arranged in the T-shaped slot 18 through the T-shaped seat 25 .

[0043] In this embodiment, in order to ensure that the slide arm 19 can slide freely relative to the rotating frame 13, a T-slot 18 and a T-seat 25 structure that cooperate with each other are designed.

[0044] See attached Figure 5 -Attached Figure 7 A cleaning motor 26 is installed at the end of the other side bracket 14, and a second cleaning brush 28 is installed at the output end of the cleaning motor 26. An excitation button 27 that cooperates with the sliding arm 19 is also provided on the inner wall of the T-slot 18.

[0045] In this embodiment, when the swing arm 17 rotates, the slide arm 19 and the engagement frame 20 also reciprocate relative to the T-slot 18. When the slide arm 19 moves inward along the T-slot 18 and presses the trigger button 27, the cleaning motor 26 is started, and the second cleaning brush 28 removes dust from the interior and gaps of the insulating device 9.

[0046] See attached Figure 5 -Attached Figure 7 The bristle length of the second cleaning brush 28 is greater than that of the first cleaning brush 24 .

[0047] In this embodiment, two groups of bristles with different lengths are designed to efficiently clean the insulating device 9. The first cleaning brush 24 can remove dust from the outer wall of the insulating device 9, and the second cleaning brush 28 can remove dust from the inside and gaps of the insulating device 9.

[0048] Embodiment 1: When the device is in use, when the insulating device 9 needs to be installed, the sliding plate 6 is pulled by the handle 8 and the sliding plate 6 is installed inside the main housing 1. At this time, the arc plate 21 does not interfere with the insulating device 9. Then the travel motor 12 is started. When the travel motor 12 drives the rotating frame 13 to rotate, under the meshing of the travel gear ring 11 and the linkage gear 16, the swing arm 17 and the linkage gear 16 rotate freely relative to the rotating frame 13. When the swing arm 17 rotates, the sliding arm 19 and the meshing frame 20 also reciprocate relative to the T-slot 18. At this time, the multiple groups of detection elements 22 on the arc plate 21 will reciprocate along the rotating frame 13 while rotating relative to the travel gear ring 11, which greatly reduces the detection blind spot. When the rotating frame 13 rotates, under the cooperation of the cleaning gear 23 and the travel gear ring 11, the cleaning gear 23 will rotate relative to the rotating frame 13, and the first cleaning brush 24 will remove dust from the outer wall of the insulating device 9. When the swing arm 17 rotates, the slide arm 19 and the engagement frame 20 also reciprocate relative to the T-slot 18. When the slide arm 19 moves inward along the T-slot 18 and presses the excitation button 27, the cleaning motor 26 is started, and the second cleaning brush 28 removes dust from the interior and gaps of the insulating device 9.

[0049] Embodiment 2: The present invention can slide the sliding plate 6 through the cooperation of the slider 7 and the slide groove 5, so as to facilitate the inspection and replacement of the insulating device 9. When the travel motor 12 drives the rotating frame 13 to rotate, under the meshing of the travel gear ring 11 and the linkage gear 16, the swing arm 17 and the linkage gear 16 can rotate freely relative to the rotating frame 13. When the swing arm 17 rotates, the sliding arm 19 and the meshing frame 20 will also reciprocate relative to the T-slot 18. At this time, the multiple groups of detection elements 22 on the arc plate 21 will reciprocate along the rotating frame 13 while rotating relative to the travel gear ring 11. This design is ingenious and effective, which can reduce the detection blind spot and greatly improve the stability and practicality of the device. When the rotating frame 13 of the present invention rotates, at this time, under the cooperation of the cleaning gear 23 and the travel gear ring 11, the first cleaning brush 24 will remove dust and clean the outer wall of the insulating device 9. When the sliding arm 19 moves inward along the T-slot 18 and squeezes the excitation button 27, the cleaning motor 26 is started. Since the bristle length of the second cleaning brush 28 is greater than that of the first cleaning brush 24, the second cleaning brush 28 can remove dust and clean the inside and gaps of the insulating device 9, which further improves the cleaning effect. This design improves the degree of freedom of the transformer partial discharge measurement device.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A transformer partial discharge measuring device, comprising a main housing (1), characterized in that: A sliding plate (6) is slidably mounted on the bottom inner wall of the main housing (1), and a symmetrical insulating device (9) is arranged on the sliding plate (6); a detection mechanism (10) is arranged coaxially with the insulating device (9) on the top inner wall of the main housing (1); The detection mechanism (10) comprises a travel gear ring (11) fixedly arranged on the top inner wall of the main housing (1); a rotating frame (13) cooperating with the travel gear ring (11) is rotatably arranged in the middle of the travel gear ring (11); a recessed portion (15) is arranged at the end of the rotating frame (13); a T-shaped slot (18) communicating with the recessed portion (15) is opened at the bottom of the rotating frame (13); a sliding arm (19) is slidably arranged in the T-shaped slot (18); A linkage gear (16) meshing with the travel gear ring (11) is rotatably disposed in the recessed portion (15); a swing arm (17) is fixedly disposed at the bottom of the linkage gear (16); an engagement frame (20) cooperating with the swing arm (17) is fixedly disposed on the outer side of the slide arm (19); a plurality of groups of arc plates (21) are fixedly disposed on the outer side of the engagement frame (20); a plurality of groups of detection elements (22) for inspecting the insulating device (9) are installed on the inner side of the arc plates (21); When the arc plate (21) rotates relative to the travel gear ring (11), it will also reciprocate along the rotating frame (13) driven by the swing arm (17); symmetrical side brackets (14) are fixedly arranged on both sides of the rotating frame (13); a cleaning gear (23) meshing with the travel gear ring (11) is rotatably arranged at the end of one group of the side brackets (14); a first cleaning brush (24) is arranged at the bottom of the cleaning gear (23); a cleaning motor (26) is installed at the end of another group of the side brackets (14); a second cleaning brush (28) is installed at the output end of the cleaning motor (26); an excitation button (27) cooperating with the sliding arm (19) is also arranged on the inner wall of the T-slot (18); the bristles of the second cleaning brush (28) are longer than those of the first cleaning brush (24).

2. A transformer partial discharge measurement device according to claim 1, characterized in that: An openable door panel (2) is installed on the front side of the main housing (1), and an observation window (3) is provided on the door panel (2).

3. A transformer partial discharge measurement device according to claim 2, characterized in that: The main housing (1) and the door panel (2) are provided with a plurality of groups of heat dissipation slots (4).

4. A transformer partial discharge measurement device according to any one of claims 1 to 3, characterized in that: A symmetrical sliding groove (5) is provided on the inner wall of the bottom of the main housing (1), and a sliding block (7) cooperating with the sliding groove (5) is fixedly provided on the bottom of the sliding plate (6).

5. A transformer partial discharge measurement device according to any one of claims 1 to 3, characterized in that: A handle (8) is also provided on the top of the sliding plate (6).

6. A transformer partial discharge measurement device according to any one of claims 1 to 3, characterized in that: A travel motor (12) is also installed on the top of the main housing (1), and an output end of the travel motor (12) is fixedly connected to the rotating frame (13).

7. A transformer partial discharge measurement device according to any one of claims 1 to 3, characterized in that: A T-shaped seat (25) matching with the T-shaped slot (18) is fixedly arranged on the top of the sliding arm (19), and the sliding arm (19) is slidably arranged in the T-shaped slot (18) via the T-shaped seat (25).

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