Internal and external double-face through-flow electric contact structure of small-sized large-current SF6 arc extinguish chamber

• Main Authors: CHAI XINJUN, SUN RUSHUI, ZHOU ZHENMING, FENG LEI, LI TAO
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The invention belongs to the technical field of power switch equipment, and particularly relates to an inner and outer double-face through-flow electric contact structure of a small large-current SF6 arc extinguish chamber. The internal and external double-face through-flow electric contact structure of the small-sized large-current SF6 arc extinguish chamber comprises a movable contact seat, and is characterized in that a movable support is arranged in the movable contact seat, a cylinder is arranged between the movable support and the movable contact seat, a spring contact finger is arranged between the outer surface of the cylinder and the movable contact seat, and a watchband contact finger is arranged between the inner surface of the cylinder and the movable support. The air cylinder has the advantages that the inner side and the outer side of the air cylinder have the electric contact flow capacity at the same time, compared with a traditional structure, the flow capacity is doubled, the large-current f