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Movable conducting rod for vacuum arc-extinguishing chamber

A technology of vacuum interrupter and movable conductive rod, which is applied in the field of conductive rods, can solve problems such as easy soldering and air leakage, and poor sealing of the connection between the movable conductive rod and the shielding plate, so as to reduce the rate of defective products and reduce the The effect of testing process and increasing stability

Pending Publication Date: 2020-08-18
宁波益舜电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned existing technical solutions have the following defects: when the vacuum interrupter is in use, since the movable conductive rod needs to be sealed and shielded through the shielding cover and the bellows, in order to facilitate installation, the bellows are often passed through The shielding disc welded with it is connected to the movable conductive rod, and the movable conductive rod is welded to the shielding disc. Due to the multi-channel welding process during production, it is easy to have virtual welding and air leakage. Therefore, additional multi-channel pairing is required during production. The inspection process of the welding part makes the production efficiency and the tightness of the connection between the moving conductive rod and the shielding plate relatively poor

Method used

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  • Movable conducting rod for vacuum arc-extinguishing chamber
  • Movable conducting rod for vacuum arc-extinguishing chamber
  • Movable conducting rod for vacuum arc-extinguishing chamber

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Embodiment 1

[0035] Reference figure 1 , Is a movable conductive rod for a vacuum interrupter disclosed in the present invention, including a movable conductive rod 1, a shield flange 11 is integrally formed around the movable conductive rod 1 toward the contact end, the shield flange 11 and the movable conductive rod 1 With the same central axis, the side wall of the shielding flange 11 facing the center of the moving conductive rod 1 is integrally formed with a ring platform 12 with the same central axis as the two. The ring platform 12 can be clamped on the end of the corrugated tube used for shielding. unit.

[0036] The part of the movable conductive rod 1 away from the shield flange 11 is milled to form two parallel rotation stop surfaces 14 for installation, which can be clamped in a guide sleeve to lock the movable conductive rod 1 in rotation. The rotation stop surface 14 is parallel to the central axis of the movable conductive rod 1, and the rotation stop surface 14 extends to the ...

Embodiment 2

[0040] Reference figure 2 The difference from the first embodiment is that the cross section of the connecting groove 13 along the axial direction of the moving conductive rod 1 is a right-angled trapezoid, and the two right angles of the connecting groove 13 are directly trapezoidal in cross section and coincide with the ring surface of the ring base 12 away from its central axis. , The connecting groove 13 is open with a big end. Wherein, the short base of the right-angled trapezoid in the cross section of the connecting groove 13 is perpendicular to the central axis of the movable conductive rod 1, and the length of the short base of the right-angled trapezoid in the cross section of the connecting groove 13 is greater than 0.3 mm.

[0041] When in use, the edge of the bellows can abut against the groove wall where the short bottom side of the right-angle trapezoid of the cross section of the connecting groove 13 is located, which can effectively increase the contact with the ...

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Abstract

The invention relates to a movable conducting rod for a vacuum arc-extinguishing chamber. The rod comprises a movable conducting rod, and a shielding flange is integrally formed around one end, facingthe contact, of the movable conducting rod; the shielding flange and the movable conducting rod share the same central axis; an annular table coaxial with the shielding flange and the movable conducting rod is integrally formed on the side wall of the side, facing the center of the movable conducting rod, of the shielding flange, the part, away from the shielding flange, of the movable conductingrod is milled to form at least one rotation stopping face used for conducting rotation locking on the movable conducting rod, and the rotation stopping faces are parallel to the center axis of the movable conducting rod. According to the invention, the production efficiency can be improved, and the sealing performance of the movable conducting rod in use is improved.

Description

Technical field [0001] The present invention relates to the technical field of conductive rods, in particular to a movable conductive rod used in a vacuum interrupter. Background technique [0002] The vacuum interrupter, also known as the vacuum interrupter, is the core component of the medium and high voltage power switch. Its main function is to quickly extinguish the arc and suppress the current after the medium and high voltage circuit is cut off through the excellent insulation of the vacuum in the tube. The main structural parts of the chamber are insulating shell, dynamic and static cover, contacts, bellows, shielding cover, dynamic and static conductive rods, guide sleeves, etc.; among them, the guide sleeve is sheathed on the dynamic conductive rods. [0003] At present, because it is not easy to weld the contact and the moving pole at one time, the moving die must be welded first when the vacuum interrupter is produced, resulting in relatively complicated production proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/664
CPCH01H33/664
Inventor 王益栋
Owner 宁波益舜电气有限公司