Compressed-air type arc extinguishing chamber capable of moving bidirectionally

Abstract

The invention relates to a compressed air type arc extinguishing chamber capable of moving in two directions. The compressed air type arc extinguishing chamber comprises a double-acting hydraulic cylinder, and the double-acting hydraulic cylinder comprises a cylinder body; the cylinder body is fixed at a static end assembly, an inner cavity and an outer cavity are formed in the cylinder body, a static piston rod is arranged in the inner cavity, the movable piston rod and the static piston rod respectively comprise a plug body and a rod body, and the rod bodies of the static piston rods comprise a first rod body and a second rod body; the outer chamber is an annular chamber and surrounds the outer side of the inner chamber, and a movable piston rod is arranged in the outer chamber; the movable end assembly is in transmission connection with the movable side rod body so as to drive the movable side rod body and the movable side plug body to move forwards and backwards during opening and closing; the static arc contact is fixed on the static piston rod; cavity communicating channels are formed in the two axial ends of the double-acting hydraulic cylinder correspondingly and used for communicating the corresponding ends of the inner cavity with the corresponding ends of the outer cavity, so the static piston rod and the movable side rod body are in linkage, and the movable end assembly is buffered. The double-acting structure can meet the double-acting requirement of the compressed air type arc extinguishing chamber under the working conditions of high voltage class and strong impact.

Description

technical field

[0001] The invention relates to a bidirectionally movable compressed gas type arc extinguishing chamber. Background technique

[0002] The interrupter is the core component of the high-voltage switch circuit breaker, which has a decisive impact on the breaking performance, reliability, operating power and economy of the circuit breaker. At present, the structures of arc extinguishing chambers at home and abroad generally use two types: single-acting and double-acting. The single-acting type means that the moving end of the arc-extinguishing chamber moves under the driving mechanism to complete the opening and closing process; the double-acting type interrupting chamber not only moves the moving end, but also Moreover, some components at the fixed end of the arc extinguishing chamber can also be moved. The advantage of the double-moving interrupter is that through the relative movement of the moving and static ends, the moving speed of the moving interrupter ...

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