Vacuum arc-extinguishing chamber of vacuum circuit breaker

• Main Authors: YE HAIQUAN, HUANG JIANWEN, ZHUO YIMIN
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The invention discloses a vacuum arc-extinguishing chamber of a vacuum circuit breaker. The vacuum arc-extinguishing chamber comprises a movable conductive rod, a movable end cover plate and a corrugated pipe, wherein one end of the corrugated pipe sleeves the movable conductive rod and the other end is fixed on the movable end cover plate; a thermal insulation layer is arranged at the sleeved part of the corrugated pipe and the movable conductive rod; an elastic shielding net is arranged at the lower end of the thermal insulation layer; and the other end of the elastic shielding net is connected with the movable end cover plate. By the structure, the corrugated pipe can be effectively prevented from being burnt out by an electric arc generated when a movable contact is separated from a fixed contact; and heating of the surface of the corrugated pipe can also be isolated, so that the service lifetimes of the corrugated pipe and the vacuum arc-extinguishing chamber are prolonged. 本发明公开了种真空断路器的真空灭弧室，包括动导电杆、动端盖板