Contact structure for non-vacuum medium, and switch

Abstract

The invention discloses a contact structure for a non-vacuum medium, and the structure comprises a first contact, a second contact, a soft connection part, and an insulating cylinder. The contact ends of the first and second contacts are arranged in a planar manner. The insulating cylinder is provided with an end opening part and a central opening part. A contact end of the first contact is located on an end face of the end opening part of the insulating cylinder. The first and second contacts contact with each other electrically, thereby forming plane butting connection. A contact part is located on the end face of the end opening part of the insulating cylinder. One end of the soft connection part is disposed in the insulating cylinder, and is fixedly connected with the first contact. The other end of the soft connection part stretches out from the central opening part of the insulating cylinder. The arrangement of a contact surface in the insulating cylinder guarantees the centering and accurate contact of the first contact with the second contact. Meanwhile, the limit of the insulating cylinder guarantees the stable contact area and environment. The structure can guarantee the sufficient contact area through the plane butting connection structure even if the centering is not achieved and there is a certain error on direct contact. The structure is small in contact resistance, is strong in through-current capability, and reduces the temperature rise.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrical equipment, in particular to a contact structure and a switch for non-vacuum media. Background technique [0002] In high-voltage electrical equipment, the use of contacts is very common and there are many types. Switching equipment such as circuit breakers and disconnectors all have dynamic and static contacts. [0003] Generally speaking, in a removable circuit breaker, during the process of pushing the handcart, there will inevitably be a certain deviation in the centering of the dynamic and static contacts when the switch is closed, and the centering of the contacts cannot be observed and is very difficult. Difficult to adjust. This will easily lead to the eccentricity of the plum blossom contact during contact. Since the centering adjustment of the plum blossom contact is only a few millimeters, once this adjustment is exceeded, the number of contact points of the plum blossom...

AI Technical Summary

Problems solved by technology

[0003] Generally speaking, in the process of pushing the handcart in the removable circuit breaker, there will inevitably be a certain deviation in the centering of the dynamic and static contacts when the switch is closed, and the centering of the contacts cannot be observed and is very difficult to observe. difficult to adjust

This will easily lead to the eccentricity of the plum blossom contact during contact. Since the centering adjustment of the plum blossom contact is only a few millimeters, once the centering adjustment is exceeded, the number of contact points of the plum blossom contact will be greatly reduced. The contact area is reduced, which leads to the weakening of the flow capacity between the contacts, resulting in excessive local temperature rise

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