Adjustable wire shielding cover external electrode structure

Abstract

The utility model relates to the technical field of shielding cover withstand voltage test equipment, and particularly discloses an adjustable lead shielding cover external electrode structure, which comprises an electrode for testing, and an adjusting assembly is arranged on the inner side of the electrode and is used for adjusting the diameter of the electrode; the electrode comprises one or more arc-shaped plates, and inlaying areas are arranged on the inner sides of the arc-shaped plates. The arc-shaped plates are connected into a whole through the clamping grooves and the elastic pieces suitable for the high-voltage environment, and the structural stability of the electrode in the diameter adjusting process is guaranteed. Due to the good insulating property and high-voltage resistance of the elastic piece, the phenomenon of electrical breakdown in a high-voltage environment is prevented, it is ensured that the electrode structure stably works in a high-voltage test, the traditional mode that the diameter of an electrode is changed by winding conductive cloth is abandoned, and the problem of electric field distortion caused by uneven conductive cloth materials and uneven pasting is effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of shielding cover pressure resistance test equipment, specifically an adjustable wire shielding cover external electrode structure. Background Technology

[0002] A conductor shield is a protective device used to protect conductors. Before production, the conductor shield needs to undergo a withstand voltage test to ensure that its performance meets the standards. During the withstand voltage test, the conductor shield is tested by applying an appropriate voltage to the electrodes.

[0003] During the production of wire shielding covers, different electrode specifications are used for different application environments. Therefore, it is necessary to change the electrodes when testing different wire shielding covers. In existing experimental methods, conductive cloth is wrapped around the base electrode to change the electrode diameter and adapt it to different electrode and wire shielding cover requirements. However, during use, new electric field distortions may occur at the electrode edges or the junction with the conductive cloth. For example, uneven material or uneven adhesion of the conductive cloth may cause abnormally high electric field strength in these local areas, thus causing unnecessary partial discharge. Such partial discharge may interfere with the results of withstand voltage tests, making it difficult for testers to accurately determine the true withstand voltage performance of the wire shielding cover. Based on this, this application provides an adjustable external electrode structure for wire shielding covers. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an adjustable wire shielding cover outer electrode structure, which solves the problem that new electric field distortions may occur at the electrode edge or at the junction with the conductive cloth in existing technologies.

[0005] The adjustable wire shielding cover external electrode structure of this utility model includes an electrode for testing, and an adjustment component is provided on the inner side of the electrode for adjusting the diameter of the electrode.

[0006] The electrode includes one or more arc-shaped plates, and an inlay area is provided on the inner side of the multiple arc-shaped plates. A set of symmetrically arranged arc-shaped grooves are opened in the inlay area, and the arc-shaped grooves are adapted to the adjustment component.

[0007] The curved plate has slots on both sides of its arc shape, and elastic elements are installed in the slots to connect multiple curved plates to form a whole.

[0008] The adjustment component includes one or more arc-shaped strips that are adapted to arc-shaped grooves. A driving component is provided on the outer side of the arc-shaped strips to control the arc-shaped strips to adjust the arc-shaped plate.

[0009] As a further improvement of this utility model, an adjustment gap is provided at one end of the two arc-shaped strips that are close to each other, and the adjustment gap is adapted to the distance between the two arc-shaped plates.

[0010] As a further improvement of this utility model, the driving component includes a large gear and a small gear, the large gear and the small gear meshing in an arc, and the small gear driving the large gear to rotate by rotating.

[0011] As a further improvement of this utility model, the large gear has a sliding groove arranged in a ring array in the middle, the sliding groove is bent at a preset angle, and a slider is installed on the inner side.

[0012] As a further improvement of this utility model, a support bar is fixed on one side of the slider, one end of the support bar is adapted to the arc-shaped bar, and the slider is controlled to slide in the groove by a small gear driving a large gear.

[0013] As a further improvement of this utility model, a limiting frame is provided on the outer side of the large gear, and an extension arm adapted to the arc-shaped strip is provided on the outer side of the limiting frame. A track adapted to the support strip is opened on the outer side of the extension arm for adjusting the position of the support strip.

[0014] As a further improvement of this utility model, a support plate is provided on the outer side of one of the limiting frames. The support plate is adapted to the pinion and is used to position the pinion.

[0015] As a further improvement of this utility model, a through hole is provided in the middle of the large gear, and a positioning strip is installed thereon to support the large gear.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention connects multiple arc-shaped plates into a single unit via slots and elastic components suitable for high-voltage environments, ensuring the structural stability of the electrode during diameter adjustment. The excellent insulation and high-voltage resistance of the elastic components prevent electrical breakdown under high-voltage conditions, ensuring stable operation of the electrode structure during high-voltage testing. It eliminates the traditional method of changing the electrode diameter by wrapping conductive cloth, effectively solving the problem of electric field distortion caused by uneven conductive cloth material and uneven adhesion.

[0018] By precisely adjusting the components and drive structure, the electrode diameter can be accurately controlled, ensuring a good fit between the electrode and the wire shielding cover, avoiding abnormal increases in local electric field strength, and making the withstand voltage test results more accurately reflect the performance of the wire shielding cover.

[0019] It eliminates the partial discharge phenomenon caused by electric field distortion, avoids the interference of partial discharge on the withstand voltage test results, allows testers to accurately judge the true withstand voltage performance of the wire shield, and improves the reliability of product quality testing. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of the electrode and adjustment component combination of this utility model;

[0022] Figure 2 This is a side view of the electrode and adjustment component assembly of this utility model.

[0023] Figure 3 This is a front view structural diagram of the adjustment component of this utility model.

[0024] In the diagram: 1. Electrode; 2. Adjustment component;

[0025] 11. Curved plate; 12. Slot; 13. Curved groove; 14. Inlay area;

[0026] 21. Arc-shaped strip; 22. Large gear; 23. Slider; 24. Slide groove; 25. Limiting frame; 26. Small gear; 27. Support strip; 28. Adjustment gap; 29. ​​Positioning strip; 210. Support plate. Detailed Implementation

[0027] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0028] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] Please see Figure 1-3In existing experimental methods, the diameter of the base electrode 1 is changed by wrapping conductive cloth around it to adapt to different electrode 1 and wire shielding requirements. However, during use, new electric field distortions may occur at the edge of the electrode 1 or at the junction with the conductive cloth. For example, uneven material or uneven adhesion of the conductive cloth may cause abnormally high electric field strength in these local areas, leading to unnecessary partial discharge. This partial discharge may interfere with the results of the withstand voltage test, making it difficult for testers to accurately determine the true withstand voltage performance of the wire shielding. Based on this, this application provides an adjustable wire shielding outer electrode 1 structure, including an electrode 1 for testing, and an adjustment component 2 provided on the inner side of the electrode 1 for adjusting the diameter of the electrode 1.

[0030] Electrode 1 includes one or more arc-shaped plates 11. The inner side of the multiple arc-shaped plates 11 is provided with an inlay area 14. A set of symmetrically arranged arc-shaped grooves 13 are opened in the inlay area 14. The arc-shaped grooves 13 are adapted to the adjustment component 2.

[0031] Both sides of the arc-shaped plate 11 are provided with slots 12, and elastic elements are installed in the slots 12 for connecting multiple arc-shaped plates 11 to form a whole.

[0032] The adjustment component 2 includes one or more arc-shaped bars 21, which are adapted to the arc-shaped groove 13. A driving component is provided on the outer side of the arc-shaped bar 21 to control the arc-shaped bar 21 to adjust the arc-shaped plate 11.

[0033] In the withstand voltage test scenario of wire shields, an adjustable wire shield external electrode 1 structure was designed to meet the testing requirements of wire shields of different specifications. This structure mainly consists of an electrode 1 used for testing and an adjustment component 2 for adjusting the diameter of the electrode 1.

[0034] Electrode 1 consists of one or more arc-shaped plates 11. For example, when testing a wire shield with a smaller diameter, only one arc-shaped plate 11 may be used; while for a shield with a larger diameter, multiple arc-shaped plates 11 can be spliced ​​together. Taking three arc-shaped plates 11 as an example, they can be arranged to form an approximately circular electrode 1 structure. Each arc-shaped plate 11 has an inlay area 14 on its inner side, which has a set of symmetrically arranged arc-shaped grooves 13. These arc-shaped grooves 13 are key parts that cooperate with the adjustment assembly 2.

[0035] Both sides of the arc-shaped plate 11 are provided with slots 12, and elastic elements, such as specially made springs, are installed in the slots 12. When multiple arc-shaped plates 11 are spliced ​​together, the elastic elements play a connecting and fixing role, and can connect multiple arc-shaped plates 11, such as three arc-shaped plates 11 spliced ​​together. Adjacent arc-shaped plates 11 are connected to each other through the slots 12 and the elastic elements to form a whole electrode 1. The elasticity of the elastic elements can ensure a tight connection between the arc-shaped plates 11, and at the same time, it can adapt to the positional changes of the arc-shaped plates 11 when adjusting the diameter of the electrode 1.

[0036] The adjustment component 2 includes one or more arc-shaped strips 21, the shape of which is adapted to the arc-shaped groove 13 so that it can be smoothly embedded in the arc-shaped groove 13. Taking one arc-shaped plate 11 corresponding to one arc-shaped strip 21 as an example, when the arc-shaped strip 21 moves in the arc-shaped groove 13, the position of the arc-shaped plate 11 can be adjusted.

[0037] A driving component is provided on the outer side of the arc-shaped strip 21. The arc-shaped strip 21 is made of insulating ceramic material, which has excellent insulation and high temperature resistance, and can well adapt to high-voltage environments. When designing the arc-shaped strip 21, the fitting accuracy between it and the arc-shaped groove 13 must be considered. Because insulating ceramic is relatively hard, the processing accuracy can be relatively high, ensuring that the arc-shaped strip 21 moves smoothly within the arc-shaped groove 13. When the driving component extends, the arc-shaped strip 21 moves outward within the arc-shaped groove 13, causing the arc-shaped plate 11 to expand outward, thereby increasing the diameter of the electrode 1; conversely, when the arc-shaped strip 21 moves inward, the arc-shaped plate 11 contracts inward, and the diameter of the electrode 1 decreases.

[0038] Workflow

[0039] Before conducting the withstand voltage test on the conductor shield, the drive unit is activated according to the diameter requirements of the shield to be tested. If the shield diameter is large, the drive unit pushes the arc-shaped strip 21 outward, and the arc-shaped plate 11 expands outward under the action of the arc-shaped strip 21, increasing the diameter of the electrode 1 until it fits the shield. If the shield diameter is small, the drive unit moves the arc-shaped strip 21 inward, and the arc-shaped plate 11 contracts, reducing the diameter of the electrode 1 to a suitable size. Then, the fitted electrode 1 is placed into the conductor shield for the withstand voltage test.

[0040] The adjustable electrode 1 structure can flexibly adjust the diameter of the electrode 1 according to the diameter requirements of different wire shielding covers, avoiding the traditional method of changing the diameter of the electrode 1 by wrapping conductive cloth. It solves the problems of electric field distortion and partial discharge caused by uneven conductive cloth material and uneven pasting, ensuring the accuracy of the withstand voltage test results.

[0041] There is no need to frequently change electrodes 1 of different specifications. The diameter of electrode 1 can be quickly changed by adjusting component 2 to adapt to different testing requirements, which greatly improves the efficiency of wire shield withstand voltage test.

[0042] Multiple arc-shaped plates 11 are connected into a whole through slots 12 and elastic elements, which ensures the structural stability of electrode 1 during diameter adjustment and can also adapt to different adjustment ranges, thereby improving the service life and reliability of electrode 1.

[0043] An adjustment gap 28 is provided at one end of the two arc-shaped strips 21 that are close to each other, and the adjustment gap 28 is adapted to the distance between the two arc-shaped plates 11.

[0044] The driving component includes a large gear 22 and a small gear 26. The large gear 22 and the small gear 26 mesh in an arc shape. The small gear 26 drives the large gear 22 to rotate by rotating.

[0045] The large gear 22 has a sliding groove 24 arranged in a ring array in the middle. The sliding groove 24 is bent at a preset angle and a slider 23 is installed on the inner side.

[0046] A support bar 27 is fixed on one side of the slider 23. One end of the support bar 27 is adapted to the arc-shaped bar 21. The slider 23 is controlled to slide in the groove 24 by the small gear 26 driving the large gear 22.

[0047] A limiting frame 25 is provided on the outer side of the large gear 22. An extension arm adapted to the arc-shaped strip 21 is provided on the outer side of the limiting frame 25. A track adapted to the support strip 27 is provided on the outer side of the extension arm for adjusting the position of the support strip.

[0048] One of the limiting frames 25 has a support plate 210 on its outer side. The support plate 210 is adapted to the pinion 26 and is used to position the pinion 26.

[0049] The large gear 22 has a through hole in the middle and a positioning strip 29 is installed to support the large gear 22.

[0050] In the structure of electrode 1 composed of multiple arc-shaped plates 11, the adjustment gap 28, located at the close ends of two arc-shaped strips 21, plays a crucial role. When the diameter of electrode 1 needs to be adjusted, the spacing between the arc-shaped plates 11 changes. For example, when the diameter of electrode 1 needs to be increased, the arc-shaped plates 11 expand outward, increasing the spacing between them, and the adjustment gap 28 also increases accordingly to accommodate this change in spacing; conversely, when the diameter of electrode 1 is decreased, the arc-shaped plates 11 contract inward, decreasing the spacing between them, and the adjustment gap 28 also decreases. This adaptive relationship ensures that the coordinated action between the arc-shaped strips 21 and the arc-shaped plates 11 can proceed smoothly during the adjustment of the electrode 1 diameter, guaranteeing the stability of the entire electrode 1 structure and the accuracy of the adjustment.

[0051] The drive unit uses a combination of a large gear 22 and a small gear 26. The rotation of the small gear 26 drives the rotation of the large gear 22. The small gear 26 can be connected to an output shaft, which drives the small gear 26 to rotate. The large gear 22 and the small gear 26 mesh in an arc shape. This meshing method can transmit power more effectively and make the large gear 22 rotate smoothly.

[0052] The large gear 22 has a sliding groove 24 arranged in a ring array in the middle. The sliding groove 24 is bent at a preset angle and a slider 23 is installed on the inner side. When the large gear 22 rotates, due to the bending design of the sliding groove 24, the slider 23 will slide in the sliding groove 24. The support bar 27 fixed on one side of the slider 23 will move with the sliding of the slider 23. One end of the support bar 27 is adapted to the arc bar 21. In this way, the sliding of the slider 23 can push the arc bar 21 to move in the arc groove 13, thereby realizing the adjustment of the diameter of the electrode 1.

[0053] The limiting frame 25 on the outer side of the large gear 22 serves to restrict the position of the large gear 22, ensuring that the large gear 22 will not deviate during rotation. The extension arm on the outer side of the limiting frame 25 is adapted to the arc-shaped strip 21, and the track on the outer side of the extension arm is adapted to the support strip 27. When the support strip 27 moves with the slider 23, the track can guide the movement direction of the support strip 27, ensuring that the support strip 27 can accurately push the arc-shaped strip 21, thus improving the adjustment accuracy.

[0054] One of the limiting frames 25 has a support plate 210 on its outer side that is adapted to the pinion 26. It provides a stable position for the pinion 26, preventing it from shaking or shifting during rotation and ensuring the stability of power transmission. The positioning strip 29 installed in the through hole in the middle of the large gear 22 is used to support the large gear 22, making it more stable during rotation and reducing errors caused by vibration or imbalance.

[0055] Overall Workflow

[0056] Before conducting the withstand voltage test on the conductor shield, the motor is started to rotate the pinion 26 according to the diameter requirements of the conductor shield to be tested. The pinion 26 drives the large gear 22 to rotate. When the large gear 22 rotates, the slider 23 slides in the groove 24, pushing the arc-shaped strip 21 to move in the arc-shaped groove 13 through the support bar 27. At the same time, the track on the extension arm guides the movement direction of the support bar 27 to ensure the accurate movement of the arc-shaped strip 21. During this process, the adjustment gap 28 will adaptively adjust according to the change in the spacing between the arc-shaped plates 11. Finally, the diameter of electrode 1 is adjusted to a size suitable for the conductor shield, and then the withstand voltage test is conducted.

[0057] Through the coordinated operation of components such as the large gear 22, small gear 26, slider 23, and support bar 27, the movement of the arc bar 21 can be precisely controlled, thereby achieving precise adjustment of the diameter of electrode 1, better meeting the testing requirements of wire shielding covers of different specifications, and improving the accuracy of withstand voltage test.

[0058] The setting of the limiting frame 25, the support plate 210 and the positioning strip 29 plays a stabilizing and supporting role for the large gear 22, the small gear 26 and the entire drive component, respectively, reducing shaking and displacement during the adjustment process, ensuring the stability of the electrode 1 structure during the adjustment and testing process, and improving the reliability of the equipment.

[0059] The track on the extension arm guides the movement direction of the support bar 27, ensuring that the support bar 27 can accurately push the arc bar 21, avoiding adjustment errors caused by the offset of the support bar 27, and further improving the accuracy of the electrode 1 diameter adjustment.

[0060] The adaptive design of adjusting the gap 28 and the arc plate 11 enables the electrode 1 to automatically adapt to the positional changes of the arc plate 11 during diameter adjustment, ensuring the coordination and stability of the entire electrode 1 structure and improving the flexibility and reliability of adjustment.

[0061] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An adjustable wire shielding cover external electrode structure, comprising an electrode (1) for testing, wherein an adjustment component (2) is provided on the inner side of the electrode (1) for adjusting the diameter of the electrode (1); Its features are: The electrode (1) includes one or more arc plates (11), and an inlay area (14) is provided on the inner side of the multiple arc plates (11). A set of symmetrically arranged arc grooves (13) are provided in the inlay area (14), and the arc grooves (13) are adapted to the adjustment component (2). The arc-shaped plate (11) has slots (12) on both sides of the arc shape, and elastic elements are installed in the slots (12) for connecting multiple arc-shaped plates (11) to form a whole. The adjustment component (2) includes one or more arc-shaped strips (21), which are adapted to the arc-shaped groove (13). A driving component is provided on the outer side of the arc-shaped strip (21) for controlling the arc-shaped strip (21) to adjust the arc plate (11).

2. The adjustable wire shielding cover external electrode structure according to claim 1, characterized in that: An adjustment gap (28) is provided at one end of the two arc-shaped strips (21) that are close to each other, and the adjustment gap (28) is adapted to the distance between the two arc-shaped plates (11).

3. The adjustable wire shielding cover external electrode structure according to claim 1, characterized in that: The driving component includes a large gear (22) and a small gear (26). The large gear (22) and the small gear (26) mesh in an arc shape. The small gear (26) drives the large gear (22) to rotate by rotating.

4. The adjustable wire shielding cover external electrode structure according to claim 3, characterized in that: The large gear (22) has a sliding groove (24) arranged in a ring array in the middle. The sliding groove (24) is bent at a preset angle and a slider (23) is installed on the inner side.

5. The adjustable wire shielding cover external electrode structure according to claim 4, characterized in that: A support bar (27) is fixed on one side of the slider (23). One end of the support bar (27) is adapted to the arc bar (21). The slider (23) is controlled to slide in the groove (24) by the small gear (26) driving the large gear (22).

6. The adjustable wire shielding cover external electrode structure according to claim 3, characterized in that: The outer side of the large gear (22) is provided with a limiting frame (25), and the outer side of the limiting frame (25) is provided with an extension arm adapted to the arc strip (21). The outer side of the extension arm is provided with a track adapted to the support strip (27) for adjusting the position of the support strip.

7. The adjustable wire shielding cover external electrode structure according to claim 6, characterized in that: One of the limiting frames (25) has a support plate (210) on its outer side, which is adapted to the pinion (26) for positioning the pinion (26).

8. The adjustable wire shielding cover external electrode structure according to claim 3, characterized in that: The large gear (22) has a through hole in the middle and a positioning strip (29) is installed to support the large gear (22).

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