Real-time monitoring device for electrical equipment partial discharge detection equipment

Abstract

The invention discloses a real-time monitoring device for electrical equipment partial discharge detection equipment, and relates to the technical field of electrical equipment detection.The real-time monitoring device comprises an equipment shell, an insulating shell is arranged in the equipment shell, an ultrasonic detection head and a pointing mechanism are arranged on the surface of one side of the equipment shell, and the pointing mechanism comprises a focusing assembly and an adjusting assembly; the focusing assembly comprises a connecting box body, a coupling agent cavity is formed in the connecting box body, side connecting plates are fixedly installed on the surfaces of the two sides of the connecting box body respectively, and a curved surface crystal plate is arranged in the coupling agent cavity. Two electric telescopic rods matched with the upward jacking plate and the downward jacking plate respectively are further arranged on the side surface of the equipment shell, in the scheme, the focusing assembly and the adjusting assembly are arranged, so that discharge signals at different positions and with different intensities can be flexibly dealt with, and the detection accuracy and sensitivity are improved.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment detection, in particular to a real-time monitoring device for electrical equipment partial discharge detection equipment. Background Art

[0002] The partial discharge detector is an advanced device specially designed for real-time monitoring of partial discharge phenomena inside electrical equipment. During the operation of power equipment, partial discharge is a common insulation failure phenomenon, which may cause equipment performance degradation or even cause serious accidents. Therefore, the development and application of partial discharge detectors are of great significance to ensure the safe and stable operation of power equipment.

[0003] However, in actual use, traditional partial discharge detectors still have some shortcomings. For example, although traditional real-time monitoring devices have basic detection functions, their detection accuracy and reliability are often limited when facing complex environments and internal structures. Especially in the long-term continuous monitoring process, the accumulation of environmental noise, the shielding effect caused by densely arranged cables, the lack of accurate directional detection capabilities of ultrasonic detectors, and the weak ultrasonic signals generated by partial discharge are easily submerged. These problems make it difficult for traditional devices to accurately determine the specific location and intensity of partial discharge. Traditional monitoring devices usually rely on ultrasonic detection heads to capture discharge signals. However, in the complex interior of the measured object, it is difficult to determine the discharge area in the first time because the ultrasonic signal is subject to multiple interferences during the propagation process. In addition, the ultrasonic detector has a wide detection range and lacks precise directionality to a single area, which makes it easy for tiny discharge signals to be masked by surrounding noise. The current generated by partial discharge is also easily guided by the insulating shell outside the cable, reducing the intensity of the ultrasonic signal directly acting on the surrounding medium, further increasing the difficulty of detection. Summary of the invention

[0004] The object of the present invention is to provide a real-time monitoring device for partial discharge detection equipment of electrical equipment to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a real-time monitoring device for partial discharge detection equipment of electrical equipment, comprising:

[0006] An equipment housing, an insulating housing is arranged inside the equipment housing, a plurality of powered cables are arranged inside the insulating housing, an ultrasonic detection head is arranged on one side surface of the equipment housing, a partial discharge tester body is arranged on one side surface of the ultrasonic detection head, and the ultrasonic detection head and the partial discharge tester body are connected via a data transmission cable;

[0007] The pointing mechanism includes a focusing component and an adjustment component. The focusing component includes: a connecting box, the connecting box is located between the ultrasonic detection head and the device housing, the two side surfaces of the connecting box are respectively in contact with the ultrasonic detection head and the device housing, a coupling agent cavity is provided inside the connecting box, a side connecting plate is fixedly installed on the two side surfaces of the connecting box, a curved crystal plate is provided inside the coupling agent cavity, and a storage baffle is also provided inside the connecting box, and one side surface of the storage baffle is a hidden cavity for storing the curved crystal plate;

[0008] The adjustment assembly includes: a downward push plate and an upward push plate. The side surface of the equipment housing is also provided with two electric telescopic rods respectively matched with the upward push plate and the downward push plate. The downward push plate and the upward push plate are respectively arranged on one side surface of the connection box body. One side surface of the downward push plate and the upper push plate are both provided with connecting rods. The interior of the coupling agent cavity is provided with a downward calibration rod and an upward calibration rod.

[0009] Furthermore, a stabilizing sliding groove is provided on the surface of one side of the side connecting plate close to the connecting box body, and a bottom limiting plate is fixedly installed between the side connecting plate and the connecting box body, and the upper surfaces of the bottom limiting plates on both sides of the connecting box body are respectively provided with force blocks and driving motors that can be synchronously lifted and lowered, and a telescopic motor is provided below the bottom limiting plate on the side where the force block is provided, and the output shaft of the telescopic motor passes through the center of the bottom limiting plate and is connected to the bottom surface of the force block, and stabilizing sliding piles are provided on the surface of one side of the force block and the driving motor, and connecting piles are provided on the other side surfaces of the driving motor and the force block, and a circular hole is provided in the center of the connecting pile on the driving motor side, and the output shaft of the driving motor passes through the connecting pile and enters the interior of the coupling agent cavity, and the connecting pile on the force block side directly enters the interior of the coupling agent cavity.

[0010] Furthermore, connecting windows are provided on both sides of the connecting box body to facilitate the output shaft of the driving motor and the connecting pile on the force-bearing block side to enter the coupling agent cavity, and the two side surfaces of the curved crystal plate are respectively connected to the output shaft of the driving motor and the ends of the connecting pile on the force-bearing block side, and the upper and lower surfaces of the two connecting piles are provided with leak-proof baffles for shielding the connecting windows.

[0011] Furthermore, the adjustment component also includes: multiple conductive sleeves, each of which is located inside the insulating shell, a conductive sleeve is sleeved on the outer surface of each of the energized cables, and two limiting strips are provided on the surface of each of the conductive sleeves. The length of the limiting strips on the surface of each conductive sleeve varies depending on the distance from its own position to the surface of the insulating shell, a limiting groove is provided on the surface of one side where the two limiting strips are close, and a movable prompt strip is provided between the two limiting strips.

[0012] Furthermore, a small signal transmitter cooperating with the movable prompt strip is provided on the inner side surface of the device housing, a trigger button is provided on the surface of the small signal transmitter, an electrical connection exists between the small signal transmitter and the body of the partial discharge tester, sliding piles cooperating with the limiting slide groove are provided on both side surfaces of the movable prompt strip, a connecting rod is also provided between the two limiting strips, one end of the connecting rod is connected to the surface of the conductive sleeve, an electromagnetic block is provided at the end of the connecting rod, and a strong magnetic sheet cooperating with the electromagnetic block is also provided on the bottom surface of each of the movable prompt strips.

[0013] Furthermore, one end of the downward calibration rod and the upper calibration rod are respectively connected to the connecting rods on the surface of one side of the downward push plate and the upper push plate, specifically, the connecting rod on the downward push plate side is connected to the downward calibration rod, and the connecting rod on the upper push plate side is connected to the upper calibration rod.

[0014] Furthermore, two movable calibration blocks are provided on the upper surface of the curved crystal plate, and a hidden groove for accommodating the movable calibration blocks is also opened on the upper surface of the curved crystal plate. A torsion spring is provided at the connection between the movable calibration block and the curved crystal plate, and a fixed calibration block for cooperating with the upward calibration rod is also provided on the bottom surface of the curved crystal plate.

[0015] Furthermore, a suction cup is provided on one side surface of the connection box body, an injection port for filling the coupling agent cavity is also provided on the upper surface of the connection box body, and a holding handle is fixedly mounted on one side surface of the side connection plate.

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

[0017] 1. In this solution, by providing a focusing component and a rotatable curved crystal plate, the ultrasonic signal is precisely focused in a specific area, which significantly improves the energy density of the ultrasonic wave in the target conductive sleeve and its surrounding area, thereby effectively enhancing the detection effect of the partial discharge phenomenon. By dynamically adjusting the angle and position of the curved crystal plate, the focusing component can more accurately detect discharge signals of different positions and intensities when partial discharge occurs, thereby ensuring the accuracy and reliability of the detection results;

[0018] 2. In this solution, by providing an adjustment component, a conductive sleeve, a movable prompt strip and an electric telescopic rod, the discharge condition of the energized cable can be monitored in real time, and a rapid response can be made when a discharge signal is detected. By precisely controlling the angle and position of the focusing component, accurate detection of the discharge area can be achieved, thereby improving the accuracy and sensitivity of the detection and preventing the situation in which the location of the local discharge cannot be determined immediately when the internal structure of the line tube is relatively complex. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the insulating housing structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the conductive sleeve structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the activity prompt bar of the present invention;

[0023] Figure 5 It is a schematic diagram of the restriction strip structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the conductive sleeve structure of the present invention;

[0025] Figure 7 It is a front structural schematic diagram of the pointing mechanism of the present invention;

[0026] Figure 8 It is a rear view schematic diagram of the internal structure of the pointing mechanism of the present invention;

[0027] Fig. 9 It is a schematic diagram of the cross-sectional structure of the device housing of the present invention.

[0028] In the figure: 1. Equipment shell; 2. Insulating shell; 3. Power cable; 4. Conductive sleeve; 5. Connecting box; 6. Ultrasonic test head; 7. Electric telescopic rod; 8. Partial discharge tester body; 9. Operation panel; 10. Activity prompt bar; 11. Limit bar; 12. Matching strong magnetic sheet; 13. Electromagnetic block; 14. Connecting support rod; 15. Limiting slide; 16. Side connecting plate; 17. Stable slide groove; 18. Holding handle; 19. Bottom limit plate; 20. Force Block; 21. Telescopic motor; 22. Stable sliding pile; 23. Upward push plate; 24. Connecting rod; 25. Connecting pile; 26. Anti-leakage baffle; 27. Driving motor; 28. Downward push plate; 29. ​​Injection port; 30. Curved crystal plate; 31. Storage baffle; 32. Downward calibration rod; 33. Movable calibration block; 34. Connecting window; 35. Upward calibration rod; 36. Fixed calibration block; 37. Couplant chamber; 38. Small signal transmitter; 39. Trigger button. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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] Example 1: Please refer to Figures 1 to 9 , a real-time monitoring device for partial discharge detection equipment of electrical equipment, comprising:

[0031] A device housing 1, an insulating shell 2 is arranged inside the device housing 1, and a plurality of powered cables 3 are arranged inside the insulating shell 2. The insulating shell 2 and the powered cables 3 are both made of insulating materials, and the powered cables 3 have a certain conductivity compared with the insulating shell 2. An ultrasonic detection head 6 for detecting whether partial discharge occurs in the internal powered cables 3 is arranged on one side surface of the device housing 1, and a partial discharge tester body 8 is arranged on one side surface of the ultrasonic detection head 6. The partial discharge tester body 8 is used to process data transmitted from the ultrasonic detection head 6. An operation panel 9 is arranged on one side surface of the partial discharge tester body 8, and the detection results can be observed intuitively through the operation panel 9. The ultrasonic detection head 6 and the partial discharge tester body 8 are connected through a data transmission cable;

[0032] The device casing 1 serves as a protective layer for the entire monitoring device. The insulating shell 2 is located inside the device casing 1 and is used to isolate and protect the internal powered cables 3 to prevent current leakage and electric shock to personnel. The insulating shell 2 and the powered cables 3 are both made of insulating materials to ensure electrical safety. The ultrasonic detection head 6 is used to capture the ultrasonic signals generated by partial discharge of the powered cables 3. These signals are transmitted to the partial discharge tester body 8 via a data transmission cable. The latter processes and analyzes the signals to determine whether there is partial discharge.

[0033] The above process is the basic process for partial discharge detection of electrical equipment at present.

[0034] However, in the actual detection process, long-term continuous monitoring is often accompanied by the accumulation of environmental noise, including electromagnetic interference, noise caused by temperature changes, and vibrations generated by the operation of the equipment itself. These external factors may interfere with the capture of discharge signals, resulting in a decrease in detection accuracy. When the ultrasonic signal propagates inside the tested wire tube, due to the dense arrangement of cables, there is a serious shielding effect between them, which hinders the ultrasonic signal again during the propagation process. Under multiple interferences, it is difficult for ultrasonic waves to determine the area where partial discharge occurs in the first time in equipment with complex internal structures. In addition, ultrasonic detectors usually have a wide detection range and lack the ability to accurately detect a single area with directionality, making it easy for tiny discharge signals to be masked by the noise of the surrounding environment, making it difficult to capture them in time. In addition, the current generated by partial discharge is often guided by the insulating shell outside the cable, reducing the intensity of the ultrasonic signal generated by the current directly acting on the surrounding medium. This phenomenon is particularly obvious in cables with good insulation performance, which makes the ultrasonic signal weak and increases the difficulty of detection. Especially in an environment with high background noise, tiny discharge signals are more easily submerged.

[0035] Therefore, based on the above problem, we first design a pointing mechanism, which includes a focusing component and an adjustment component. The focusing component includes: a connecting box 5, which is located between the ultrasonic detection head 6 and the device housing 1, and the two side surfaces of the connecting box 5 are respectively in contact with the ultrasonic detection head 6 and the device housing 1, and a suction cup is provided on one side surface of the connecting box 5 to adsorb on one side surface of the device housing 1 for long-term monitoring. A coupling agent cavity 37 is provided inside the connecting box 5, and an injection port 29 for filling the coupling agent cavity 37 is also provided on the upper surface of the connecting box 5. The two side surfaces of the connecting box 5 are respectively A side connecting plate 16 is fixedly installed, and a gripping handle 18 is fixedly installed on one side surface of the side connecting plate 16. A stable sliding groove 17 is provided on the side surface of the side connecting plate 16 close to the connecting box body 5. A bottom limiting plate 19 is also fixedly installed between the side connecting plate 16 and the connecting box body 5. The upper surfaces of the bottom limiting plates 19 on both sides of the connecting box body 5 are respectively provided with force blocks 20 and driving motors 27 that can be synchronously lifted and lowered. A telescopic motor 21 is provided below the bottom limiting plate 19 on the side where the force block 20 is provided. The output shaft of the telescopic motor 21 passes through the center of the bottom limiting plate 19 and is connected to the bottom surface of the force block 20. A stable sliding pile 22 is provided on one side of the driving motor 27. When the force block 20 and the driving motor 27 move up and down, the stable sliding piles 22 on both sides slide inside the stable sliding groove 17 to improve stability. A connecting pile 25 is provided on the other side of the driving motor 27 and the force block 20. A circular hole is provided in the center of the connecting pile 25 on the driving motor 27 side. The output shaft of the driving motor 27 passes through the connecting pile 25 and enters the inside of the coupling agent cavity 37. The connecting pile 25 on the force block 20 directly enters the inside of the coupling agent cavity 37. The two sides of the connecting box 5 are provided with a hole for facilitating the output shaft of the driving motor 27 to connect with the force block 20. The connecting pile 25 on the side enters the communication window 34 of the coupling agent cavity 37, and the coupling agent cavity 37 is provided with a curved crystal plate 30 inside. The two side surfaces of the curved crystal plate 30 are respectively connected to the output shaft of the driving motor 27 and the end of the connecting pile 25 on the side of the force-bearing block 20. The upper and lower surfaces of the two connecting piles 25 are provided with anti-leakage baffles 26 for shielding the communication window 34. The interior of the connecting box 5 is also provided with a storage baffle 31. One side surface of the storage baffle 31 is a hidden cavity for storing the curved crystal plate 30. When the curved crystal plate 30 completely enters the hidden cavity, the bottom surface of the curved crystal plate 30 and the bottom surface of the storage baffle 31 form a plane.

[0036] The focusing component realizes the focusing of the ultrasonic signal by connecting the curved crystal plate 30 in the box body 5. During the monitoring of the ultrasonic detection head 6, the adjustment component starts automatically when local discharge occurs, driving the active prompt strip 10 on the surface of the corresponding conductive sleeve 4 to be lifted and triggered, and then the trigger signal is transmitted to the data processor inside the local discharge tester body 8, and the local discharge tester body 8 drives one of the electric telescopic rods 7 on the side surface to be lifted according to the trigger signal, and drives the upper push plate 23 or the lower push plate 28 to rotate according to the specific position of the detected conductive sleeve 4, so that the connected downward calibration rod 32 or the upper calibration rod 35 rotates synchronously, and stops after rotating to a specified degree, and then controls the telescopic motor 21 to shrink through the local discharge tester body 8, so that the curved crystal plate 30 slides out from the inside of the hidden cavity. During the sliding process, the two active calibration blocks 33 on the upper surface of the curved crystal plate 30 are acted on by the torsion spring. The two parts rotate and finally fit together. Subsequently, the driving motor 27 is controlled by the local discharge tester body 8 to rotate in the corresponding direction with the downward calibration rod 32 / the downward push plate 28, and finally the arc on the side surface of the movable calibration block 33 / the fixed calibration block 36 contacts the downward calibration rod 32 / the upward calibration rod 35, and is restricted and stops. The driving motor 27 stops driving immediately after sensing that the rotation of the curved crystal plate 30 is restricted. At this time, the curved crystal plate 30 produces an inclination angle facing the specific position of the conductive sleeve 4 where the local discharge occurs. When the ultrasonic detection head 6 continues to detect with ultrasonic waves, when the ultrasonic wave passes through the curved crystal plate 30, a focusing effect is generated due to the curved surface of the curved crystal plate 30, which can concentrate the ultrasonic wave energy on the specific area of ​​the conductive sleeve 4 where the local discharge occurs. This focusing effect helps to increase the energy density of the ultrasonic wave in the target area, thereby enhancing the detection effect and improving the accuracy and reliability of the detection.

[0037] The adjustment component includes: a plurality of conductive sleeves 4, the plurality of conductive sleeves 4 are all located inside the insulating shell 2, a conductive sleeve 4 is sleeved on the outer surface of each energized cable 3, two limiting strips 11 are arranged on the surface of each conductive sleeve 4, the length of the limiting strips 11 on the surface of each conductive sleeve 4 is different according to the distance from its own position to the surface of the insulating shell 2, a limiting groove 15 is provided on the side surface close to the two limiting strips 11, a movable active prompt strip 10 is arranged between the two limiting strips 11, and the inner side surface of the device housing 1 is provided with a movable prompt strip 10. 10, a small signal transmitter 38 matched with the small signal transmitter 38 is provided on the surface of the small signal transmitter 38, and there is an electrical connection between the small signal transmitter 38 and the partial discharge tester body 8, and the two side surfaces of the movable prompt strip 10 are provided with slide piles matched with the limiting slide groove 15, and a connecting rod 14 is also provided between the two limiting strips 11, and one end of the connecting rod 14 is connected to the surface of the conductive sleeve 4, and the end of the connecting rod 14 is provided with an electromagnetic block 13, and the bottom surface of each movable prompt strip 10 is also provided with a matching strong magnetic sheet 12 matched with the electromagnetic block 13;

[0038] By adjusting the first part of the component, i.e., the part that triggers the signal prompt, when partial discharge occurs, the current generated by the energized cable 3 with the wire phenomenon inside can be guided through the conductive sleeve 4 with a certain conductivity, and finally the current is made to flow to the connecting rod 14 on the surface of the conductive sleeve 4. After the electromagnetic block 13 at the end of the connecting rod 14 is excited by the current, it generates magnetism that repels the matching strong magnetic sheet 12. When the matching strong magnetic sheet 12 repels the electromagnetic block 13, the matching strong magnetic sheet 12 drives the active prompt strip 10 to slide along the limiting groove 15 on the inner side of the limiting strip 11, and finally the active prompt strip 10 is lifted upward. As the active prompt strip 10 is lifted, it finally contacts the trigger button 39 inside the device housing 1. After the trigger button 39 is pressed, the signal is transmitted to the partial discharge tester body 8 through the small signal transmitter 38, and finally the remaining part of the adjustment component and the focusing component are controlled to start.

[0039] The adjustment assembly also includes: a downward push plate 28 and an upward push plate 23. The side surface of the equipment housing 1 is also provided with two electric telescopic rods 7 respectively matched with the upward push plate 23 and the downward push plate 28. The downward push plate 28 and the upward push plate 23 are respectively arranged on the side surface of the connecting box 5. The side surfaces of the downward push plate 28 and the upward push plate 23 are both provided with connecting rods 24. The coupling agent cavity 37 is provided with a downward calibration rod 32 and an upward calibration rod 35. One end of the downward calibration rod 32 and the upper calibration rod 35 are respectively connected to the connecting rod 24 on the side surface of the downward push plate 28 and the upper push plate 23, specifically the connecting rod on the side of the downward push plate 28 24 is connected to the downward calibration rod 32, the connecting rod 24 on the upward push plate 23 side is connected to the upward calibration rod 35, the upper surface of the curved crystal plate 30 is provided with two movable calibration blocks 33, the upper surface of the curved crystal plate 30 is also provided with a hidden groove for storing the movable calibration blocks 33, and a torsion spring is provided at the connection between the movable calibration block 33 and the curved crystal plate 30. When the curved crystal plate 30 rises to the highest point, the two movable calibration blocks 33 are squeezed and the torsion spring is pressed to rotate, so that the two movable calibration blocks 33 are respectively rotated to both sides and enter the hidden groove for storage, and the bottom surface of the curved crystal plate 30 is also provided with a fixed calibration block 36 for cooperating with the upward calibration rod 35;

[0040] The second part of the adjustment component is the auxiliary angle adjustment part. After the local discharge tester body 8 receives the trigger signal transmitted by the small signal transmitter 38, it first determines the direction in which the focusing component rotates according to the position of the conductive sleeve 4 corresponding to each small signal transmitter 38 predetermined in advance. Taking the upward rotation as an example, when the local discharge tester body 8 receives the signal, it sends a signal according to the judgment result to drive the electric telescopic rod 7 on the side of the downward push plate 28 to rotate to a specific amplitude. When the rotation of the electric telescopic rod 7 is completed, the focusing assembly descends and rotates to adjust the angle. When the fixed calibration block 36 is in contact with the upward calibration rod 35, the angle adjustment is completed, and then the focusing detection can be performed, thereby achieving a higher precision detection effect.

[0041] The working principle of the present invention is:

[0042] During the monitoring process of the ultrasonic detection head 6, by adjusting the first part of the component, that is, the part that triggers the signal prompt, when the partial discharge phenomenon occurs, the current generated by the energized cable 3 with the wire phenomenon inside can be guided through the conductive sleeve 4 with a certain conductivity, and finally the current is made to flow to the connecting support rod 14 on the surface of the conductive sleeve 4. After the electromagnetic block 13 at the end of the connecting support rod 14 is excited by the current, it generates magnetism that repels the matching strong magnetic sheet 12. Under the condition that the matching strong magnetic sheet 12 repels the electromagnetic block 13, the matching strong magnetic sheet 12 drives the active prompt strip 10 to slide along the limiting slide groove 15 on the inner side of the limiting strip 11, and finally the active prompt strip 10 is lifted upward. As the active prompt strip 10 is lifted, it finally contacts the trigger button 39 inside the device housing 1. After the trigger button 39 is pressed, the signal is transmitted to the partial discharge tester body 8 through the small signal transmitter 38, and finally the remaining part of the adjustment component and the focusing component are controlled to start;

[0043] The second part of the adjustment component is the auxiliary angle adjustment part. After receiving the trigger signal transmitted by the small signal transmitter 38, the local discharge tester body 8 first determines the direction in which the focusing component rotates according to the position of the conductive sleeve 4 corresponding to each small signal transmitter 38 predetermined in advance. Taking the upward rotation as an example, when the local discharge tester body 8 receives the signal, it sends a signal according to the judgment result to drive the electric telescopic rod 7 on the side of the downward push plate 28 to rotate by a specific amplitude. When the rotation of the electric telescopic rod 7 is completed, the focusing component descends and rotates to adjust the angle. When the fixed calibration block 36 is fitted with the upward calibration rod 35, the angle adjustment is completed, and then the focusing detection can be performed, thereby achieving a higher precision detection effect.

[0044] When partial discharge occurs, the adjustment component starts automatically, driving the active prompt strip 10 on the surface of the corresponding conductive sleeve 4 to be lifted and triggered, and then the trigger signal is transmitted to the data processor inside the partial discharge tester body 8, and the partial discharge tester body 8 drives one of the electric telescopic rods 7 on the side surface to be lifted according to the trigger signal, and drives the upward push plate 23 or the downward push plate 28 to rotate according to the detected specific position of the conductive sleeve 4, so that the connected downward calibration rod 32 or the upper calibration rod 35 rotates synchronously, and stops after rotating to a specified degree, and then controls the telescopic motor 21 to contract through the partial discharge tester body 8, so that the curved crystal plate 30 slides out from the inside of the hidden cavity. During the sliding process, the two active calibration blocks 33 on the upper surface of the curved crystal plate 30 are rotated by the torsion spring and finally fit together, and then, through the partial discharge The tester body 8 controls the drive motor 27 to rotate in the corresponding direction with the downward calibration rod 32 / the downward push plate 28, and finally makes the arc opening on the side surface of the movable calibration block 33 / the fixed calibration block 36 contact with the downward calibration rod 32 / the upward calibration rod 35, and stop due to the restriction thereof. The drive motor 27 stops driving immediately after sensing that the rotation of the curved crystal plate 30 is restricted. At this time, the curved crystal plate 30 generates an inclination angle facing the specific position of the conductive sleeve 4 where local discharge occurs. When the ultrasonic detection head 6 continues to detect with ultrasonic waves, when the ultrasonic wave passes through the curved crystal plate 30, a focusing effect is generated due to the curved surface of the curved crystal plate 30, which can concentrate the ultrasonic wave energy on the specific area of ​​the conductive sleeve 4 where local discharge occurs. This focusing effect helps to increase the energy density of the ultrasonic wave in the target area, thereby enhancing the detection effect and improving the accuracy and reliability of the detection.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A real-time monitoring device for partial discharge detection equipment of electrical equipment, characterized in that: include: A device housing (1), an insulating housing (2) is arranged inside the device housing (1), a plurality of energized cables (3) are arranged inside the insulating housing (2), an ultrasonic detection head (6) is arranged on one side surface of the device housing (1), a partial discharge tester body (8) is arranged on one side surface of the ultrasonic detection head (6), and the ultrasonic detection head (6) and the partial discharge tester body (8) are connected via a data transmission cable; A pointing mechanism, the pointing mechanism comprising a focusing component and an adjustment component, the focusing component comprising: a connecting box (5), the connecting box (5) being located between the ultrasonic detection head (6) and the device housing (1), the two side surfaces of the connecting box (5) respectively being in contact with the ultrasonic detection head (6) and the device housing (1), a coupling agent cavity (37) being provided inside the connecting box (5), a side connecting plate (16) being fixedly mounted on the two side surfaces of the connecting box (5), a curved crystal plate (30) being provided inside the coupling agent cavity (37), a storage baffle (31) being further provided inside the connecting box (5), a side surface of the storage baffle (31) being a hidden cavity for storing the curved crystal plate (30); The adjustment assembly comprises: a downward push plate (28) and an upward push plate (23); the side surface of the device housing (1) is also provided with two electric telescopic rods (7) respectively matched with the upward push plate (23) and the downward push plate (28); the downward push plate (28) and the upward push plate (23) are respectively provided on a side surface of a connecting box (5); a connecting rod (24) is provided on a side surface of the downward push plate (28) and the upward push plate (23); and a downward calibration rod (32) and an upward calibration rod (35) are provided inside the coupling agent cavity (37).

2. A real-time monitoring device for partial discharge detection equipment of electrical equipment according to claim 1, characterized in that: A stable sliding groove (17) is provided on a side surface of the side connecting plate (16) close to the connecting box (5), and a bottom limiting plate (19) is fixedly installed between the side connecting plate (16) and the connecting box (5). The upper surfaces of the bottom limiting plates (19) on both sides of the connecting box (5) are respectively provided with force blocks (20) and driving motors (27) that can be synchronously lifted and lowered. A telescopic motor (21) is provided below the bottom limiting plate (19) on the side where the force block (20) is provided, and the output shaft of the telescopic motor (21) passes through the bottom limiting plate (19). ) is connected to the bottom surface of the force-bearing block (20) at the center thereof, one side surface of the force-bearing block (20) and the driving motor (27) are both provided with a stabilizing sliding pile (22), the other side surfaces of the driving motor (27) and the force-bearing block (20) are both provided with a connecting pile (25), a circular hole is opened at the center of the connecting pile (25) on the driving motor (27) side, the output shaft of the driving motor (27) passes through the connecting pile (25) and enters the interior of the coupling agent cavity (37), and the connecting pile (25) on the force-bearing block (20) side directly enters the interior of the coupling agent cavity (37).

3. A real-time monitoring device for partial discharge detection equipment of electrical equipment according to claim 2, characterized in that: The two sides of the connection box (5) are provided with connecting windows (34) for facilitating the output shaft of the drive motor (27) and the connecting pile (25) on the side of the force-bearing block (20) to enter the coupling agent cavity (37); the two side surfaces of the curved crystal plate (30) are respectively connected to the output shaft of the drive motor (27) and the ends of the connecting pile (25) on the side of the force-bearing block (20); and the upper and lower surfaces of the two connecting piles (25) are both provided with leak-proof baffles (26) for shielding the connecting windows (34).

4. A real-time monitoring device for partial discharge detection equipment of electrical equipment according to claim 1, characterized in that: The adjustment component further comprises: a plurality of conductive sleeves (4), wherein the plurality of conductive sleeves (4) are all located inside the insulating shell (2), a conductive sleeve (4) is sleeved on the outer surface of each of the energized cables (3), and the surface of each of the conductive sleeves (4) is provided with two limiting strips (11), the length of the limiting strips (11) on the surface of each of the conductive sleeves (4) varies according to the distance from the position of the limiting strip to the surface of the insulating shell (2), a limiting groove (15) is provided on the surface of one side of the two limiting strips (11) adjacent to each other, and a movable prompt strip (10) is provided between the two limiting strips (11).

5. A real-time monitoring device for partial discharge detection equipment of electrical equipment according to claim 4, characterized in that: The inner side surface of the device housing (1) is provided with a small signal transmitter (38) that matches with the movable prompt strip (10), and the surface of the small signal transmitter (38) is provided with a trigger button (39). There is an electrical connection between the small signal transmitter (38) and the partial discharge tester body (8). The two side surfaces of the movable prompt strip (10) are provided with sliding piles that match with the limiting slide groove (15). A connecting rod (14) is also provided between the two limiting strips (11), and one end of the connecting rod (14) is connected to the surface of the conductive sleeve (4). An electromagnetic block (13) is provided at the end of the connecting rod (14). The bottom surface of each movable prompt strip (10) is also provided with a matching strong magnetic sheet (12) that matches with the electromagnetic block (13).

6. A real-time monitoring device for partial discharge detection equipment of electrical equipment according to claim 1, characterized in that: One end of the downward calibration rod (32) and the upper calibration rod (35) are respectively connected to the connecting rod (24) on the surface of one side of the downward push plate (28) and the upper push plate (23), specifically, the connecting rod (24) on the side of the downward push plate (28) is connected to the downward calibration rod (32), and the connecting rod (24) on the side of the upper push plate (23) is connected to the upper calibration rod (35).

7. A real-time monitoring device for partial discharge detection equipment of electrical equipment according to claim 1, characterized in that: Two movable calibration blocks (33) are arranged on the upper surface of the curved crystal plate (30), and a hidden groove for accommodating the movable calibration blocks (33) is also provided on the upper surface of the curved crystal plate (30). A torsion spring is arranged at the connection between the movable calibration block (33) and the curved crystal plate (30), and a fixed calibration block (36) for cooperating with an upward calibration rod (35) is also arranged on the bottom surface of the curved crystal plate (30).

8. A real-time monitoring device for partial discharge detection equipment of electrical equipment according to claim 1, characterized in that: A suction cup is provided on one side surface of the connection box (5), an injection port (29) for filling the interior of the coupling agent cavity (37) is also provided on the upper surface of the connection box (5), and a gripping handle (18) is fixedly mounted on one side surface of the side connection plate (16).

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