CN203894916U

CN203894916U - Door guard power-off alarm device

Info

Publication number: CN203894916U
Application number: CN201420267217.4U
Authority: CN
Inventors: 白治国; 赵志强; 李慧
Original assignee: State Grid Corp of China SGCC; Yangquan Power Supply Co of State Grid Shanxi Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Yangquan Power Supply Co of State Grid Shanxi Electric Power Co Ltd
Priority date: 2014-05-23
Filing date: 2014-05-23
Publication date: 2014-10-22
Anticipated expiration: 2024-05-23

Abstract

The utility model relates to an alarm device when a door guard of a machine room is out of work, and specifically provides a door guard power-off alarm device, comprising a delay normally closed relay K. Two ends of the coil of the delay normally closed relay K is connected with the wiring end of an electromagnetic device of the machine room. The contact of the delay normally closed relay K is connected in series with a storage battery and an alarm. When the electromagnetic device of the machine room is powered off caused by normal opening of the door of the machine room, before the contact of the delay normally closed relay K is closed, the machine room door is already closed, the coil of the delay normally closed relay K is electrified, the contact of the delay normally closed relay K keeps in a disconnected state, and the alarm would not alarm. If the electromagnetic device is powered off caused by faults, power of the electromagnetic device is not recovered before the contact of the delay normally closed relay K is closed, the contact of the delay normally closed relay K is closed, the alarm gives out an alarm, so as to remind personnel on duty to find and remove faults.

Description

Gate inhibition's power failure alarm device

Technical field

The utility model relates to the warning device after machine room gate inhibition was lost efficacy, and is specially gate inhibition's power failure alarm device.

Background technology

The gate inhibition of the dispatching automation equipment machine room of electric company be by calutron realize machine room door close, if calutron power-off, the gate inhibition of dispatching automation equipment machine room was lost efficacy, the door of machine room can be opened at any time, the automated system of dispatching automation equipment machine room belongs to the system that security protection rank is higher, if machine room can arbitrarily be come in and gone out, the security risk of automated system is larger, and operator on duty differs and finds in time that surely the gate inhibition of dispatching automation equipment machine room lost efficacy, therefore need a kind of device to remind operator on duty in the very first time of gate inhibition's power-off of machine room.

Summary of the invention

The utility model, for the gate inhibition that solves machine room is because of the problem that calutron power-off failure operator on duty could not find and then cause security incident in time, provides gate inhibition power failure alarm device.

The utility model is to adopt following technical scheme to realize: gate inhibition's power failure alarm device, comprise time delay normally closed relay K, the two ends of the coil of time delay normally closed relay K are connected with the terminals of machine room calutron, the contact of time delay normally closed relay K and accumulator and alarm series connection.

When the calutron of machine room is charged, the gate inhibition of machine room normally uses, the coil of time delay normally closed relay K in gate inhibition's power failure alarm device is also charged, the contact of time delay normally closed relay K disconnects, alarm can not reported to the police, when the unexpected power-off of calutron, the also power-off of coil of time delay normally closed relay K, the contact meeting time closing of time delay normally closed relay K, if calutron is because the door of machine room is normally opened and power-off, the contact of time delay normally closed relay K is before closure, the door of machine room is closed, the coil of time delay normally closed relay K is charged, continue in off-state the contact of time delay normally closed relay K, alarm can not reported to the police, if calutron is the power-off because of fault, in the contact of time delay normally closed relay K, calutron before closure does not also restore electricity, the closing of contact of time delay normally closed relay K, alarm equipment alarm, and then remind and arrive operator on duty, search and fix a breakdown.

Gate inhibition's power failure alarm device that the utility model provides can give the alarm during because of fault power-off at the calutron of machine room, reminds operator on duty, has improved the safety coefficient of dispatching automation equipment machine room.

Accompanying drawing explanation

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

Gate inhibition's power failure alarm device, comprises time delay normally closed relay K, and the two ends of the coil of time delay normally closed relay K are connected with the terminals of machine room calutron, the contact of time delay normally closed relay K and accumulator and alarm series connection.

Claims

1. gate inhibition's power failure alarm device, is characterized in that comprising time delay normally closed relay K, and the two ends of the coil of time delay normally closed relay K are connected with the terminals of machine room calutron, the contact of time delay normally closed relay K and accumulator and alarm series connection.