An electrode gap adjustment device for insulating oil withstand voltage testing

Abstract

This utility model discloses an electrode gap adjustment device for insulating oil withstand voltage testing, belonging to the technical field of insulating oil withstand voltage testing. It includes an oil cup, electrode posts, an electrode gap adjustment component, and a camera-based distance measurement system located on a worktable. The oil cup is situated between two electrode posts. Through holes are provided on two opposite side walls of the oil cup. An insulating sealing sleeve is slidably and sealingly connected within the through holes. A guide rod is fixedly connected within the insulating sealing sleeve. One end of the guide rod is fixedly connected to an electrode located inside the oil cup, and the other end of the guide rod is connected to a wiring port inside the electrode post via a spring cable. The insulating sealing sleeve is connected to the outer shell of the electrode post through the electrode gap adjustment component. The calculation module in the camera-based distance measurement system is electrically connected to the electrode gap adjustment component via a controller. This utility model, employing the above-described structure, provides an electrode gap adjustment device for insulating oil withstand voltage testing, facilitating rapid adjustment of the electrode gap and thereby improving the efficiency of insulating oil withstand voltage testing.

Description

Technical Field

[0001] This utility model belongs to the field of insulating oil withstand voltage testing technology, and in particular relates to an electrode gap adjustment device for insulating oil withstand voltage testing. Background Technology

[0002] The breakdown voltage test of insulating oil involves subjecting the insulating oil to an alternating electric field. The oil's insulating properties prevent electron avalanche. When the voltage is sufficiently high, the resistance of the insulating oil between the two electrodes suddenly drops dramatically, the current surges, and conductivity occurs between the electrodes. At this point, the insulating oil breaks down. The alternating voltage at which this breakdown occurs is called the "breakdown voltage," and it is an important indicator of the electrical strength of the insulating oil.

[0003] In the withstand voltage test of insulating oil, there are specific requirements for the spacing of the test electrodes in the oil cup, which must be 2.5mm ± 0.05mm. Therefore, the distance between the electrodes should be adjusted before conducting the dielectric strength test of insulating oil. Chinese Patent Application No. CN202321431591.9 provides a workbench for an insulating oil dielectric strength tester, including a panel with two high-voltage columns. An oil cup is positioned between the high-voltage columns, and two guide rods pass through the oil cup. The ends of the guide rods away from the oil cup contact the high-voltage columns, and electrodes are positioned at the ends of the guide rods away from the high-voltage columns. A sealing plate is arranged around the panel, and two adjusting rods pass through each side of the sealing plate. A limiting sleeve is provided at the end of the adjusting rod near the guide rod, and the limiting sleeve is nested with a fixing ring on the guide rod. An adjusting button is provided at the end of the adjusting rod away from the guide rod. A positioning ring is fixedly installed where the adjusting rod passes through the sealing plate, and a scale plate is provided outside the positioning ring, which is fixedly connected to the sealing plate.

[0004] The above structure can directly display the gap between electrodes through the combination of a positioning ring and a scale plate. The specific process is as follows: the positioning ring is initially positioned close to the sealing plate, and the corresponding mark on the scale plate is 0. Then, with the electrodes in the oil cup in close contact, the fixing ring at one end of the guide rod is placed into the limiting sleeve. Rotating the adjustment knob moves the adjustment rod outward from the sealing plate, thereby moving the guide rod and the electrodes. At this point, the reading on the scale plate on the positioning ring is the displacement distance, and the sum of the readings on the two scale plates is the distance between the electrodes. However, the above structure has the following problems in use: the electrode spacing adjustment method is complex, resulting in low efficiency in insulating oil withstand voltage testing.

[0005] To solve the above problems, a new electrode gap adjustment device is needed. Utility Model Content

[0006] The purpose of this invention is to provide an electrode gap adjustment device for insulating oil withstand voltage testing, which facilitates rapid adjustment of the electrode gap and thereby improves the efficiency of insulating oil withstand voltage testing.

[0007] To achieve the above objectives, this utility model provides an electrode gap adjustment device for insulating oil withstand voltage testing, comprising an oil cup, electrode posts, an electrode gap adjustment assembly, and a camera-based distance measurement system located on a worktable. The oil cup is located between two electrode posts, and through holes are provided on two opposite side walls of the oil cup. An insulating sealing sleeve is slidably and sealingly connected within the through holes. A guide rod is fixedly connected within the insulating sealing sleeve. One end of the guide rod extends through the insulating sealing sleeve and is fixedly connected to an electrode located within the oil cup. The other end of the guide rod is connected to a wiring port within the electrode post via a spring cable. The insulating sealing sleeve is connected to the outer shell of the electrode post through the electrode gap adjustment assembly. The camera-based distance measurement system includes a camera and a calculation module electrically connected to each other. The camera is located directly above the oil cup. The calculation module is electrically connected to a controller, and the controller is electrically connected to the electrode gap adjustment assembly.

[0008] Preferably, the oil cup is placed on the workbench, the electrode post is shaped like a 90° bent tube, the bottom end of the vertical section of the electrode post is provided with a power connection port, the power connection port is plugged into and fixed to the power interface fixed on the workbench, and the end of the horizontal section of the electrode post is provided with a wiring port, the wiring port is electrically connected to the power connection port.

[0009] Preferably, the electrode spacing adjustment assembly includes the motor, a main gear, a secondary gear, and a connector. The motor is electrically connected to the controller and is fixed on the worktable. The output shaft of the motor is fixedly connected to the main gear. The main gear meshes with the secondary gear. The secondary gear is coaxially fixed to the outer wall of the connector. The connector is horizontally positioned. One end of the connector is coaxially rotatably connected to the outer wall of the horizontal section of the electrode post. The other end of the connector has a central hole with an internal thread on the inner wall of the central hole. The internal thread is adapted to the external thread on the outer wall of the insulating sealing sleeve.

[0010] Preferably, the camera is connected to a translation drive assembly, which includes a support platform fixed on the workbench. A horizontally arranged translation force device is fixedly connected to the top surface of the support platform. The telescopic end of the translation force device is fixedly connected to the camera. When the translation force device is in a fully retracted state, the camera is offset from the oil cup. When the translation force device is in a fully extended state, the camera is located directly above the oil cup.

[0011] Preferably, a sealing ring is fixedly connected inside the through hole, located between the through hole and the insulating sealing sleeve.

[0012] Therefore, the electrode gap adjustment device for insulating oil withstand voltage testing with the above-mentioned structure has the following beneficial effects: the distance between the two electrodes is calculated by using a camera-based distance measurement system, and the distance is transmitted to the controller. The controller judges whether the distance is within a suitable range and controls the motor in the electrode gap adjustment component to start according to the judgment result, thereby realizing the rapid adjustment of the electrode gap and improving the efficiency of insulating oil withstand voltage testing.

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an embodiment of an electrode gap adjustment device for insulating oil withstand voltage testing according to this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of an embodiment of the insulating sealing sleeve in an electrode gap adjustment device for testing the withstand voltage of insulating oil according to this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of an electrode post in an embodiment of an electrode gap adjustment device for insulating oil withstand voltage testing according to this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of a connecting component in an electrode gap adjustment device for testing the withstand voltage of insulating oil according to this utility model.

[0018] In the diagram: 1. Workbench; 2. Oil cup; 3. Electrode post; 4. Electrode spacing adjustment assembly; 41. Motor; 42. Main gear; 43. Secondary gear; 44. Connector; 5. Camera; 6. Insulating sealing sleeve; 7. Guide rod; 8. Electrode; 9. Spring cable; 10. Convex ring; 11. Groove; 12. Center hole; 13. Internal thread; 14. External thread; 15. Translation drive assembly; 151. Support platform; 152. Translational power device; 16. Sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example

[0022] Reference Figure 1-4 As shown, this embodiment provides an electrode gap adjustment device for insulating oil withstand voltage testing, including an oil cup 2, electrode posts 3, an electrode gap adjustment assembly 4, and a camera-based distance measurement system located on a workbench 1. The oil cup 2 is located between two electrode posts 3, and through holes are provided on two opposite side walls of the oil cup 2. An insulating sealing sleeve 6 is slidably and sealingly connected within the through holes, and a guide rod 7 is fixedly connected within the insulating sealing sleeve 6. One end of the guide rod 7 extends through the insulating sealing sleeve 6 and is fixedly connected to the electrode 8 located within the oil cup 2. The other end of the guide rod 7 is connected to a wiring port within the electrode post 3 via a spring cable 9. The spring cable 9 ensures that the guide rod 7 remains electrically connected to the electrode post 3 during horizontal movement of the insulating sealing sleeve 6. The insulating sealing sleeve 6 is connected to the outer shell of the electrode post 3 via the electrode gap adjustment assembly 4, which drives the insulating sealing sleeve 6 to move horizontally to adjust the gap between the two electrodes 8. The camera-based distance measurement system includes a camera 5 and a calculation module electrically connected to each other. The camera 5 is located directly above the oil cup 2. The computing module is electrically connected to the controller, and the controller is electrically connected to the electrode spacing adjustment component 4.

[0023] The camera-based distance measurement system is existing technology, and its specific principle will not be elaborated here. In use, camera 5 takes pictures of the oil cup 2 and the two electrodes 8 inside it. The calculation module calculates the distance between the two electrodes 8 based on the acquired images and transmits this distance to the controller. The controller is a programmable logic controller (PLC). The controller determines whether the received distance exceeds the specified range (2.5mm ± 0.05mm). If it does, the controller calculates the excess displacement and controls the electrode spacing adjustment component 4 to activate, causing the insulating sealing sleeve 6, guide rod 7, and electrodes 8 to move the corresponding distance. The entire process requires no manual intervention, enabling rapid adjustment of the electrode gap and thus improving the efficiency of insulating oil withstand voltage testing.

[0024] In a further optimized design, the oil cup 2 is placed on the workbench 1, meaning the oil cup 2 can be removed from the workbench 1. The electrode post 3 is shaped like a 90° bent tube. The bottom end of the vertical section of the electrode post 3 is provided with a power connection socket, which is plugged into and fixed to the power interface fixed on the workbench 1. The end of the horizontal section of the electrode post 3 is provided with a wiring port, which is electrically connected to the power connection socket.

[0025] In use, the power interface on the workbench 1 transmits electrical energy to the power connector, which in turn transmits electrical energy to the wiring port. The connection between the power connector on the electrode post 3 and the power interface on the workbench 1 is fixed, allowing the electrode post 3 to be easily removed from the workbench 1, and consequently, the oil cup 2 to be easily removed from the workbench 1.

[0026] In a further preferred embodiment, the electrode spacing adjustment assembly 4 includes a motor 41, a main gear 42, a secondary gear 43, and a connector 44. The motor 41 is fixed on the worktable 1 and electrically connected to the controller. The output shaft of the motor 41 is fixedly connected to the main gear 42, and the main gear 42 meshes with the secondary gear 43. The secondary gear 43 is coaxially fixed to the outer wall of the connector 44. The connector 44 is horizontally positioned, and one end of the connector 44 is coaxially rotatably connected to the outer wall of the horizontal section of the electrode post 3. Specifically, the rotatable connection can be achieved by having a protruding ring 10 on the outer wall of the horizontal section of the electrode post 3, and a groove 11 on the connector 44 that matches the structure of the protruding ring 10. The groove 11 rotates along the circumferential direction of the protruding ring 10. The other end of the connector 44 has a central hole 12, and the inner wall of the central hole 12 has an internal thread 13 that matches the external thread 14 on the outer wall of the insulating sealing sleeve 6.

[0027] In use, the rotational power of the motor 41 is transmitted to the connector 44 in sequence through the main gear 42 and the secondary gear 43. After the connector 44 rotates, the insulating sealing sleeve 6 can move in the center hole 12 of the connector 44. The movement of the insulating sealing sleeve 6 can move the guide rod 7 and the electrode 8 synchronously, thereby realizing the adjustment of the gap between the two electrodes 8.

[0028] In a further preferred embodiment, the camera 5 is connected to the translation drive assembly 15, which includes a support platform 151 fixed on the worktable 1. A horizontally arranged translation force device 152 is fixedly connected to the top surface of the support platform 151, and the telescopic end of the translation force device 152 is fixedly connected to the camera 5. When the translation force device 152 is in the fully retracted state, the camera 5 is offset from the oil cup 2; when the translation force device 152 is in the fully extended state, the camera 5 is located directly above the oil cup 2.

[0029] In use, the translational power device 152 can be a hydraulic cylinder. The hydraulic cylinder is connected to the oil supply system through a hydraulic pump. The translational power device 152 can drive the camera 5 to move. When the translational power device 152 is in the fully extended state, the camera 5 is located directly above the oil cup 2, which makes it convenient to take pictures of the oil cup 2 and the electrode 8. When the translational power device 152 is in the fully retracted state, the camera 5 is staggered from the oil cup 2. At this time, the camera 5 will not obstruct the picking and placing of the oil cup 2 on the worktable 1.

[0030] In a further optimized design, a sealing ring 16 is fixedly connected inside the through hole, located between the through hole and the insulating sealing sleeve 6. The sealing ring 16 can increase the sealing between the insulating sealing sleeve 6 and the through hole, thereby preventing the insulating oil in the oil cup 2 from leaking out.

[0031] Therefore, the present invention provides an electrode 8 gap adjustment device for insulating oil withstand voltage testing with the above-mentioned structure, which facilitates rapid adjustment of the electrode 8 gap and thereby improves the efficiency of insulating oil withstand voltage testing.

[0032] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A gap adjusting device for an electrode (8) for dielectric oil withstand voltage detection, characterized by: The system includes an oil cup (2), electrode posts (3), an electrode spacing adjustment assembly (4), and a camera-based distance measurement system located on a workbench (1). The oil cup (2) is located between two electrode posts (3). The oil cup (2) has through holes on its two opposite side walls. An insulating sealing sleeve (6) is slidably and sealed inside the through holes. A guide rod (7) is fixedly connected inside the insulating sealing sleeve (6). One end of the guide rod (7) passes through the insulating sealing sleeve (6) and is fixedly connected to an electrode (8) located inside the oil cup (2). The other end of the guide rod (7) is connected to a wiring port inside the electrode post (3) via a spring cable (9). The insulating sealing sleeve (6) is connected to the outer shell of the electrode post (3) via the electrode spacing adjustment assembly (4). The camera-based distance measurement system includes a camera (5) and a calculation module that are electrically connected to each other. The camera (5) is located directly above the oil cup (2). The calculation module is electrically connected to a controller. The controller is electrically connected to the electrode spacing adjustment assembly (4).

2. The electrode (8) gap adjustment device for dielectric oil withstand voltage detection according to claim 1, characterized by: The oil cup (2) is placed on the workbench (1). The electrode column (3) is shaped like a 90° bent tube. The bottom end of the vertical section of the electrode column (3) is provided with a power connection port. The power connection port is plugged into and fixed to the power interface fixed on the workbench (1). The end of the horizontal section of the electrode column (3) is provided with a wiring port. The wiring port is electrically connected to the power connection port.

3. The electrode (8) gap adjustment device for dielectric oil withstand voltage detection according to claim 2, characterized by: The electrode spacing adjustment assembly (4) includes a motor (41), a main gear (42), a secondary gear (43), and a connector (44). The motor (41) is electrically connected to the controller. The motor (41) is fixed on the worktable (1). The output shaft of the motor (41) is fixedly connected to the main gear (42). The main gear (42) is meshed with the secondary gear (43). The secondary gear (43) is coaxially fixed on the outer wall of the connector (44). The connector (44) is horizontally arranged. One end of the connector (44) is coaxially rotatably connected to the outer wall of the horizontal section of the electrode column (3). The other end of the connector (44) is provided with a central hole (12). The inner wall of the central hole (12) is provided with an internal thread (13). The internal thread (13) is adapted to the external thread (14) on the outer wall of the insulating sealing sleeve (6).

4. The electrode (8) gap adjustment device for dielectric oil withstand voltage detection according to claim 1, characterized by: The camera (5) is connected to the translation drive assembly (15), which includes a support platform (151) fixed on the worktable (1). A horizontally arranged translation force device (152) is fixedly connected to the top surface of the support platform (151), and the telescopic end of the translation force device (152) is fixedly connected to the camera (5).

5. The electrode (8) gap adjustment device for dielectric oil withstand voltage detection according to claim 1, characterized by: A sealing ring (16) is fixedly connected inside the through hole between the through hole and the insulating sealing sleeve (6).

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