Operating device of disconnecting switch and disconnecting switch with operating device

Abstract

The invention discloses an operating device of a disconnecting switch and the disconnecting switch with the operating device. The operating device comprises a shell and a grounding operating mechanism. The grounding operating mechanism comprises a grounding operating shaft, a grounding transmission shaft, a transmission mechanism, a first elastic part, a driving part and a locking mechanism. The locking mechanism locks a driving arm after grounding switching-off is completed, and the driving part rotates forwards to a set position to unlock locking cooperation of the locking mechanism and thedriving arm. When the grounding operating mechanism is switched off, locking cooperation is formed between the driving arm and the locking mechanism, the transmission mechanism keeps the switched-offposition locked, and the effect of switching-off in-place limiting is achieved. When the grounding operating mechanism is switched on, the driving arm is locked at the switching-on front half way, thefirst elastic part keeps energy storage and starts to release energy after the driving arm and the locking mechanism are unlocked, and rapid switching-on is achieved. The grounding operating mechanism has a limiting keeping function during switching-off and an energy storage keeping function during switching-on.

Description

technical field [0001] The invention relates to the technical field of medium and high voltage electrical appliances, in particular to an isolation switch operating device, and the invention also relates to an isolation switch. Background technique [0002] The load switch in the ring network cabinet usually requires three positions, that is, to cut off the load, isolate the circuit, and be reliably grounded. In the existing technology, a three-position isolating switch is often used to realize the three-position isolating switch. The three-position isolating switch integrates the functions of the isolating switch and the grounding switch, and uses a switch knife to realize mechanical locking and prevent the main circuit from being electrified. , to avoid the harm caused by misuse. [0003] The main part of the three-position isolating switch is a three-position operating mechanism. The existing three-position operating mechanism includes an isolation operation shaft, a gro...

AI Technical Summary

Problems solved by technology

[0006] First of all, during the grounding and opening process, due to the large potential energy of the energy storage spring, the connecting rod mechanism and the grounding operation shaft move to the opening position under the action of the energy storage spring to produce a mechanical impact, which will cause the grounding contact to Opening bounce, when there is a recovery voltage between the dynamic and static contacts of the vacuum interrupter, this kind of opening bounce can easily cause arc re-ignition and burn the contacts, resulting in potential safety hazards and shortening the service life of the contacts;

[0007] Secondly, the link mechanism cannot accurately stop at the set position under the action of the energy storage spring, and usually moves beyond the set position; and in the process of grounding and closing, the energy storage time of the energy storage spring is relatively short and will be released earlier Energy storage, the energy storage effect is not good, which affects the closing speed of the operating mechanism and makes the closing time longer, which will cause arc discharge at the moving end located in the vacuum interrupter during closing, which will affect the contact. Severe damage, resulting in safety hazards and reduced service life of contacts and vacuum interrupters

Images