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CN-224231894-U - Adjustable external electrode structure of wire shielding cover

CN224231894UCN 224231894 UCN224231894 UCN 224231894UCN-224231894-U

Abstract

The utility model relates to the technical field of shielding cover withstand voltage test equipment, and particularly discloses an adjustable wire shielding cover external electrode structure which comprises an electrode for testing, wherein an adjusting component is arranged on the inner side of the electrode and used for adjusting the diameter of the electrode, the electrode comprises one or more arc plates, an inlaid area is arranged on the inner side of each arc plate, and the arc plates are connected into a whole through clamping grooves and elastic pieces applicable to high-pressure environments, so that the structural stability of the electrode in the diameter adjusting process is ensured. The elastic piece has good insulating property and high voltage resistance, prevents electric breakdown under high-voltage environment, ensures stable operation of the electrode structure in high-voltage test, abandons the mode of changing the diameter of the electrode by traditional winding conductive cloth, and effectively solves the problem of electric field distortion caused by uneven material and uneven adhesion of the conductive cloth.

Inventors

  • LIU RENSHAN
  • WANG YIJIAN
  • HU YANSONG

Assignees

  • 湖北泰得检测技术有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (8)

  1. 1. An adjustable wire shielding cover external electrode structure comprises an electrode (1) for testing, wherein an adjusting component (2) is arranged on the inner side of the electrode (1) and used for adjusting the diameter of the electrode (1); the method is characterized in that: the electrode (1) comprises one or more arc-shaped plates (11), an embedded area (14) is arranged on the inner sides of the arc-shaped plates (11), a group of symmetrically arranged arc-shaped grooves (13) are formed in the embedded area (14), and the arc-shaped grooves (13) are matched with the adjusting component (2); Clamping grooves (12) are formed in two sides of the arc-shaped plate (11), and elastic pieces are arranged at the clamping grooves (12) and used for connecting the arc-shaped plates (11) to form a whole; The adjusting component (2) comprises one or more arc-shaped strips (21), the arc-shaped strips (21) are matched with the arc-shaped grooves (13), and driving components are arranged on the outer sides of the arc-shaped strips (21) and used for controlling the arc-shaped strips (21) to adjust the arc-shaped plates (11).
  2. 2. An adjustable wire shield external electrode structure according to claim 1, characterized in that one end of the two arc-shaped strips (21) close to each other is provided with an adjusting gap (28), and the adjusting gap (28) is adapted to the distance between the two arc-shaped plates (11).
  3. 3. An adjustable wire shield external electrode structure according to claim 1, wherein said driving member comprises a large gear (22) and a small gear (26), said large gear (22) is in arc engagement with said small gear (26), and said small gear (26) drives said large gear (22) to rotate by rotation.
  4. 4. The external electrode structure of the adjustable wire shielding cover of claim 3, wherein the middle part of the large gear (22) is provided with a chute (24) which is arranged in an annular array, the chute (24) is bent at a preset angle, and the inner side of the chute is provided with a sliding block (23).
  5. 5. The external electrode structure of the adjustable wire shielding cover of claim 4, wherein one side of the sliding block (23) is fixed with a supporting bar (27), one end of the supporting bar (27) is matched with the arc-shaped bar (21), and the sliding block (23) drives the large gear (22) through the small gear (26) to control the sliding block (23) to slide in the sliding groove (24).
  6. 6. The external electrode structure of the adjustable wire shielding cover of claim 3, wherein a limiting frame (25) is arranged on the outer side of the large gear (22), an extension arm matched with the arc-shaped strip (21) is arranged on the outer side of the limiting frame (25), and a track matched with the support strip (27) is arranged on the outer side of the extension arm for adjusting the position of the support strip.
  7. 7. The structure of claim 6, wherein a support plate (210) is disposed outside one of the limiting frames (25), and the support plate (210) is adapted to the pinion (26) for positioning the pinion (26).
  8. 8. The structure of the outer electrode of the adjustable wire shielding cover of claim 3, wherein the middle part of the large gear (22) is provided with a through hole, and a positioning strip (29) is arranged for supporting the large gear (22).

Description

Adjustable external electrode structure of wire shielding cover Technical Field The utility model relates to the technical field of shielding cover withstand voltage test equipment, in particular to an adjustable wire shielding cover external electrode structure. Background The wire shielding cover is a protective device for protecting wires, the wire shielding cover needs to be subjected to a withstand voltage test before production so as to ensure that the performance of the shielding cover meets the standard, and in the process of the withstand voltage test, the wire shielding cover is detected by sleeving the wire shielding cover on an electrode and applying a suitable voltage; The wire shielding cover is different in electrode specifications when in production, so that the electrode needs to be replaced when the wire shielding cover is tested, and in the existing experimental mode, the diameter of the electrode is changed by winding conductive cloth on a base electrode so as to meet the adaptation requirement of different electrodes and the wire shielding cover, but when in use, new electric field distortion can be generated at the edge of the electrode or the joint of the electrode and the conductive cloth. For example, the uneven material or uneven adhesion of the conductive cloth may cause the electric field intensity of these local areas to be abnormally increased, thereby causing unnecessary partial discharge phenomenon. Such partial discharge may interfere with the results of the withstand voltage test, making it difficult for the tester to accurately judge the true withstand voltage performance of the wire shielding cover. Based on the above, the application provides an adjustable external electrode structure of a wire shielding cover. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides an adjustable wire shielding cover outer electrode structure, which solves the problem that in the prior art, new electric field distortion can be generated at the edge of an electrode or the joint of the electrode and conductive cloth. The utility model relates to an adjustable wire shielding cover external electrode structure, which comprises an electrode for testing, wherein an adjusting component 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, an embedded area is arranged on the inner sides of the arc-shaped plates, a group of symmetrically arranged arc-shaped grooves are formed in the embedded area, and the arc-shaped grooves are matched with the adjusting component; Clamping grooves are formed in two sides of the arc-shaped plate, and elastic pieces are arranged at the clamping grooves and used for connecting a plurality of arc-shaped plates to form a whole; The adjusting component comprises one or more arc-shaped strips, the arc-shaped strips are matched with the arc-shaped grooves, and driving components are arranged on the outer sides of the arc-shaped strips and used for controlling the arc-shaped strips to adjust the arc-shaped plates. As a further development of the utility model, the ends of the two arcuate strips which are adjacent to each other are provided with an adjustment gap which is adapted to the distance between the two arcuate plates. As a further improvement of the present utility model, the driving part includes a large gear and a small gear, the large gear is in arc-shaped engagement with the small gear, and the small gear drives the large gear to rotate by rotating. As a further improvement of the utility model, the middle part of the large gear is provided with a chute which is arranged in an annular array, the chute is arranged in a bending way at a preset angle, and the inner side of the chute is provided with a sliding block. As a further improvement of the utility model, one side of the sliding block is fixed with a supporting bar, one end of the supporting bar is matched with the arc-shaped bar, and the sliding block drives the large gear to control the sliding block to slide in the sliding groove through the pinion. As a further improvement of the utility model, the outer side of the large gear is provided with a limit frame, the outer side of the limit frame is provided with an extension arm matched with the arc-shaped strip, and the outer side of the extension arm is provided with a track matched with the support strip for adjusting the position of the support strip. As a further improvement of the utility model, a supporting plate is arranged on the outer side of one of the limiting frames, and the supporting plate is matched with the pinion and used for positioning the pinion. As a further improvement of the utility model, the middle part of the large gear is provided with a through hole, and a positioning strip is arranged for supporting the large gear. Compared with the prior art, the utility model has the following benef