A c-gis low air pressure alarm locking device

Abstract

The invention discloses a C-GIS low air pressure alarm locking device, which is characterized in that it includes an electrical system and a mechanical system, and the electrical system includes a pressure sensing module, a first output connected to the pressure sensing module A pressure sampling module and a second pressure sampling module, the first pressure sampling module is connected to an electric transmission module, the electric transmission module is connected to an electrical indication alarm module and an electrical locking module, and the electrical indication alarm module is connected to a device operation shaft locking module; The second pressure sampling module is connected to the mechanical system, and realizes low-voltage mechanical indication, electrical locking and mechanical locking through the transmission of the mechanical system. It has simple structure, stable transmission, safety and reliability; it can receive remote or local series of automatic operation instructions, can clearly and accurately identify alarm signals, trace the source of alarm, and because of the corresponding operation of the mandatory shutdown switch equipment of this level of mechanical devices system.

Description

【Technical field】 [0001] The invention relates to a C-GIS low air pressure alarm locking device. 【Background technique】 [0002] At present, as a way to realize live insulation treatment by means of inflatable, the inflatable pressure or gas density in the airtight box is one of the key factors for the normal operation of the inflatable switchgear. Cubicletype Gas Insulated Switchgear (C-GIS) in the power transmission and distribution industry is in the power transmission and distribution system. In the C-GIS switchgear of the high pressure system, the pressure gas filled in the airtight chamber of many devices is not only the medium to realize electrical insulation, but also the medium to participate in extinguishing the arc. When the value is high, the arc extinguishing ability of the switchgear in the inflatable cabinet will be directly lost, which will lead to the loss of the closing and opening ability of the switchgear, which is the key indicator that the C-GIS cannot...

AI Technical Summary

Problems solved by technology

And usually because the switchgear has not been actually operated, the pressure attention in the airtight box is relatively low, and it may even occur that the operation at this level is carried out for the purpose of maintenance or ensuring safety under the condition of low pressure, which will cause irreparable loss of life and property

At present, although there are some corresponding technical measures with monitoring and early warning devices for the low pressure state of this type of inflatable switchgear, but because most of these measures rely on the low-voltage working power supply on site to maintain the alarm state or prompt, once the low-voltage work is lost on site For power supply, all monitoring technical measures will fail or even cause an embarrassing situation where it is impossible to verify whether an alarm (alarm) has been issued, and maintaining the low-voltage power supply on site requires increased inspection and maintenance density. Obviously, this is incompatible with the automation and maintenance-free implementation of the entire power grid. Or the direction of less maintenance is extremely inconsistent

At the same time, some systems simply adopt the method of automatically disconnecting the switchgear at the same level to realize protection, which is actually a very inappropriate treatment method, because the C-GIS is already in the low pressure state of the airtight room, and the switchgear is forcibly implemented. Operation will lead to the expansion of insulation accidents or even irreparable. Obviously, a low-pressure alarm and locking system suitable for C-GIS switchgear should be able to meet the dual combination of electrical and mechanical, and then solve the problem of the presence or absence of working power at the work site. Whether the system can work or not is not related to the result, and it is really satisfied that once it enters the alarm state, it will directly shut down the electrical and mechanical, local (on-site) and remote operation functions of the level, only when the alarm factor is artificially removed. A perfect measure to implement the corresponding operation

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