Oil-draining and nitrogen-injecting fire extinguishing device comprising double oil draining systems

Abstract

The invention relates to an oil-draining and nitrogen-injecting fire extinguishing device comprising double oil draining systems. The device comprises a fire control cabinet, a first transformer, a second transformer, a control cabinet and an accident oil tank; a terminal box, a nitrogen cylinder, a first oil draining pipeline, a second oil draining pipeline as well as a first nitrogen injecting pipe and a second nitrogen injecting pipe which are arranged on an outlet pipeline of the nitrogen cylinder are arranged in the fire control cabinet; a first pressure detector and a first oil draining valve are arranged on the first oil draining pipeline; a second pressure detector and a second oil draining valve are arranged on the second oil draining pipeline; oil leakage detecting assemblies are arranged in pipelines on lower sides of the first oil draining valve and the second oil draining valve and the first pressure detector and the second pressure detector are connected with the control cabinet through the terminal box. The device is relatively reasonable in structural design, can effectively solve problems about pressure detection and pipeline oil leakage of nitrogen-injecting fire extinguishing devices in the prior art, and is convenient, practical and suitable for further popularization and application.

Description

technical field [0001] The invention relates to the technical field of structural design of an oil discharge and nitrogen injection fire extinguishing device, and more specifically relates to an oil discharge and nitrogen injection fire extinguishing device with a double oil discharge system. Background technique [0002] Transformer nitrogen-filled fire extinguishing devices are widely used in power plants and substations with a capacity of more than 2MVA for large oil-immersed power transformers. The traditional structure of transformer nitrogen-filled fire extinguishing devices has the following problems: the nitrogen charging mechanism and the oil discharge mechanism are independent of electricity. Drive, in various complex situations in the fire scene, there are great potential safety hazards; due to the limitations of its own structure, the traditional structure of fire extinguishing devices cannot guarantee that the oil will be drained from the transformer first, and t...

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Problems solved by technology

[0002] Transformer nitrogen-filled fire extinguishing devices are widely used in power plants and substations with a capacity of more than 2MVA for large oil-immersed power transformers. The traditional structure of transformer nitrogen-filled fire extinguishing devices has the following problems: the nitrogen charging mechanism and the oil discharge mechanism are independent of electricity. Drive, in various complex situations in the fire scene, there are great potential safety hazards; due to the limitations of its own structure, the traditional structure of fire extinguishing devices cannot guarantee that the oil will be drained from the transformer first, and then the fire will be filled with nitrogen to extinguish the fire. Nitrogen-filled fire extinguishing is started before the oil in the transformer is drained, and the effect is twice the result with half the effort; traditional transformer nitrogen-filled fire extinguishing devices can only perform one-to-one fire extinguishing actions, and a large number of fire extinguishing devices is not convenient for later management and maintenance

The applicant's patent 201420166084.1 discloses a nitrogen injection fire extinguishing device with a double oil discharge system interlocking mechanism. Reasonable structural design, convenient and practical oil discharge and nitrogen injection fire extinguishing device with double oil discharge system is a technical problem to be solved by those skilled in the art

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