Double-hole operation mechanism interlocking device and ring main unit

Abstract

The invention relates to the technical field of electrical equipment, in particular to a double-hole operation three-in-two interlocking mechanism and a ring main unit. The mechanism comprises a panel which is provided with a slide way and an operation hole, a key, a transmission mechanism, a first sliding mechanism, a second sliding mechanism, and an automatic reset device. When the device is in a switching-on state, the key cannot be pulled out from the panel, only when the device is in a switching-off state, the key can be pulled out, and the second sliding plate blocks the operation hole. And interlocking of the double-hole operation mechanism is perfectly realized.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a double-hole operating mechanism interlocking device and a ring network cabinet. Background technique [0002] The ring network cabinet is a kind of electrical equipment that integrates high-voltage switchgear in a metal-enclosed fixture, or makes a spliced ​​interval ring network power supply unit. Its core components are load switches and fuses. It has a simple structure and a small size. Small, low price, can improve the quality and performance of power supply and improve the safety of power supply, the ring main unit is widely used in distribution stations and box-type substations of power supply centers such as cities and residential quarters, high-rise buildings, large public buildings, factories and enterprises Among them, with the improvement of use requirements, the structure of the traditional ring network cabinet can no longer meet the requirements of som...

AI Technical Summary

Problems solved by technology

[0002] The ring network cabinet is a kind of electrical equipment that integrates high-voltage switchgear in a metal-enclosed fixture, or makes a spliced ​​interval ring network power supply unit. Its core components are load switches and fuses. It has a simple structure and a small size. Small, low price, can improve the quality and performance of power supply and improve the safety of power supply, the ring main unit is widely used in distribution stations and box-type substations of power supply centers such as cities and residential quarters, high-rise buildings, large public buildings, factories and enterprises Among them, with the improvement of use requirements, the structure of the traditional ring network cabinet can no longer meet the requirements of some new safety performance, and there are many defects in its structure

[0003] The ring network switchgear is one of the main equipment used for ring network power supply, and the safety of its operation process is particularly important; in the combined electrical structure of the ring network cabinet isolating switch and circuit breaker currently used, in order to "prevent live closing and opening Isolation switch" meets daily needs. In 10KV equipment, objects are generally used to block the operating hole of the circuit breaker and the operating hole of the isolating switch to realize the operation. This control method is not effective, the function is relatively simple, and it is easy to misoperate. When the circuit breaker is closed, the action of the isolating switch is prevented

Therefore, the existing ring network cabinets often have electrical misoperation accidents due to misoperation, electric shock accidents occur during the maintenance process, the safety of the switchgear is low, and the safety guarantee of the maintenance personnel is low.

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