Five-prevention mechanical interlocking structure of upper isolation switch cabinet

Abstract

The invention discloses a five-prevention mechanical interlocking structure for an upper isolation switch cabinet. The structure comprises a reset base, an interlocking plate, a fixing support, a fixing screw, a limiting block, a circuit breaker indication interlocking limiting block, a circuit breaker indication rotating shaft, an isolation connecting rod, a grounding connecting rod, an isolation welding blocking piece, an isolation fixing rotating shaft, a grounding welding blocking piece, a grounding fixing rotating shaft and an isolation grounding indication interlocking plate. The isolation grounding indication interlocking plate is beneficial to shape design; the isolation welding blocking piece and the grounding welding blocking piece are linked with the circuit breaker indication interlocking limiting block through the isolation connecting rod and the grounding connecting rod; the limiting block and a limiting shifting block in the circuit breaker indication interlocking limiting block form an interlocking relation with the interlocking plate through bending; the interlocking plate and a cable chamber lower door are interlocked through the reset base; and a five-prevention interlocking function is formed through the above four combinations. The five-prevention mechanical interlocking structure is reliable in performance and easy to assemble, completely meets the five-prevention interlocking performance requirements, greatly improves the safety of switch cabinet equipment, and is favorable for the safety of power systems and operators.

Description

technical field [0001] The invention relates to the technical field of switch cabinets, in particular to a five-proof mechanical interlocking structure required for an upper isolation switch cabinet. Background technique [0002] The five-prevention system is the main equipment to prevent misoperation in the substation, and it is an important equipment to ensure the safe operation of the substation and prevent human misoperation. Any normal switching operation must go through the simulation preview and logical judgment of the five-prevention system, so ensure the integrity of the five-prevention system And perfection, can greatly prevent and reduce the occurrence of power grid accidents. With the development of the power grid and the increasing power consumption of users, the reliability of power supply for users is getting higher and higher, and the role of the five-proof system has become more important. [0003] The specific requirements of the five preventions are: 1. P...

AI Technical Summary

Problems solved by technology

[0004] Most of the existing five-proof interlocking schemes have complex structures, or there are many types of parts, or the assembly process is complicated or difficult

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