Novel longitudinal magnetic coil structure of vacuum arc extinguishing chamber

Abstract

The invention discloses a novel longitudinal magnetic coil structure of a vacuum arc extinguishing chamber. The novel longitudinal magnetic coil structure is characterized by comprising a coil (1), wherein the opening end of the coil (1) is the lower part; the bowl bottom end of the coil (1) is the upper part; two or more than two grooves (2) are arranged above the coil (1); the grooves (2) are connected with inclined grooves (3) on the side wall of the coil (1); the inclined grooves (3) rotate upwards along the circumference of the coil (1); and the surface at the lower part of the coil (1) is an complete ring. According to the novel longitudinal magnetic coil structure, the completeness of the coil is maintained by changing the grooves on the coil; the strength of the coil is enhanced; the transformation is reduced; the influence on the shape transformation caused by the welding is reduced; the influence that a contact resistance is a little large due to the shape transformation is avoided; and moreover, the reliability in positioning is improved by changing the positioning mode of a contact and the coil; and the assembling is simpler, more convenient and faster; and the quality of the vacuum arc extinguishing chamber is improved.

Description

technical field [0001] The invention relates to a novel longitudinal magnetic coil structure of a vacuum interrupter, belonging to the technical field of vacuum interrupters. Background technique [0002] The vacuum interrupter is the key component of the vacuum switch, and it is responsible for controlling the arc. The cutting and closing of the circuit are all completed by the coil contacts in the vacuum interrupter, such as Figure 5 In the existing small vacuum interrupter, with the open end of the contact seat as the top, the contact seat coil of the cup-shaped longitudinal magnetic contact used for arc extinguishing includes a contact seat, and a groove is opened on the top of the ring , Under the groove, there is a chute rotating along the circumference of the ring. The chute is a through structure. During the processing and welding process, the end face deformation is prone to affect the welding quality, resulting in a large contact resistance and affecting the breaki...

AI Technical Summary

Problems solved by technology

[0002] The vacuum interrupter is the key component of the vacuum switch, and it is responsible for controlling the arc. The cutting and closing of the circuit are all completed by the coil contacts in the vacuum interrupter, such as Figure 5 In the existing small vacuum interrupter, with the open end of the contact seat as the top, the contact seat coil of the cup-shaped longitudinal magnetic contact used for arc extinguishing includes a contact seat, and a groove is opened on the top of the ring , There is a chute that rotates along the circumference of the ring under the groove. The chute is a through structure. During the process of processing and welding, the deformation of the end surface is prone to affect the welding quality, resulting in a large contact resistance and affecting the breaking effect.

Images