Nitrogen inflation extinguishing equipment with automatic pressure relief function for transformer

Abstract

The invention relates to nitrogen inflation extinguishing equipment with an automatic pressure relief function for a transformer. The nitrogen inflation extinguishing equipment is provided with a cabinet body. The cabinet body is internally provided with a nitrogen gas cylinder. A cylinder opening of the nitrogen gas cylinder is provided with a pressure relief valve. The nitrogen gas cylinder is connected with a nitrogen injection pipe. The nitrogen injection pipe is provided with a nitrogen injection opening valve and an oil-nitrogen isolation device. The middle of the nitrogen injection pipe penetrates through an oil discharge pipe. The oil discharge pipe is provided with an observation hole and an oil discharge opening valve. The top end of the oil discharge pipe is provided with a butterfly valve. The nitrogen inflation extinguishing equipment is wide in application range, reliable and timely in fire extinguishing, less in loss, simple, convenient to mount, free of freezing, blocking and error operation, in a continuous automatic detection state and convenient to use, the service life is prolonged, and the cost is lowered.

Description

technical field [0001] The invention relates to a nitrogen-filled fire extinguishing device for a transformer with automatic pressure relief. Background technique [0002] Transformer nitrogen filling fire extinguishing device is a fire extinguishing device for large oil-immersed power transformers with a capacity of 2MVA or more in power plants and substations. It is also called oil discharge nitrogen injection fire prevention and fire extinguishing device. The device integrates fire detection, alarm, and fire extinguishing systems. It can extinguish the fire immediately after starting, effectively preventing the fire from spreading and re-igniting. [0003] The action signal of the traditional fire extinguishing device is controlled by multiple contact relays and time relays. There are many contacts, which will cause mechanical wear and arc burns. It is easy to be poorly connected, resulting in incorrect signal transmission. Moreover, there are many connections, which are ...

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Problems solved by technology

[0003] The action signal of the traditional fire extinguishing device is controlled by multiple contact relays and time relays. There are many contacts, which will cause mechanical wear and arc burns. It is easy to be poorly connected, resulting in incorrect signal transmission. Moreover, there are many connections, which are reliable and maintainable. Poor performance; it is not easy to realize decentralized control, centralized management, real-time data collection, remote control and browsing

[0004] At the same time, it will also cause misoperation, and the pressure of the nitrogen cylinder will drop, which will cause the fire extinguishing device to refuse to operate due to the low pressure, and cannot perform fire extinguishing actions on the transformer, thereby affecting the safe operation of the transformer and causing major power grid accidents.

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