全氟己酮在室内10 kV变压器火灾中的灭火试验研究

摘 要：针对室内变压器常出现的过载、短路以及设备老化等引起的火灾事故，研究变压器火灾热辐射和有毒气体扩散机理，寻求室内电力变压器火灾抑制的有效方法。以室内常用10 kV油浸式变压器为例，搭建消防试验平台，模拟室内电力变压器初期火灾现场，采集火灾前后CO、NO、SO2、O2气体质量浓度，对火灾现场不同位置温度和热辐射的量值变化规律进行分析，采用全氟己酮灭火剂抑制室内变压器火灾。试验结果表明:在输变电系统室内电力变压器火灾中，全氟己酮灭火剂灭火速度快，吸热降温效果明显，降温速率可达80 ℃/min，对变压器电气设备没有破坏性，实现了室内变压器火灾的可控以及灭火效率的提升，是输变电系统设备初期火灾抑制研究的一种新思路。

Experimental study on fire extinguishing of Perfluorohexanone in 10 kV indoor transformer fire

Abstract: In order to study the filtering effect and protective mechanism of different towels on indoor fire smoke, a thermal decomposition and smoke production platform with protective testing function was built. PVC materials was used as smoke-producing materials because it is widely used in interior decoration. The 3 common materials of cotton, gauze and microfiber towels on the market were selected to study the protective filtering effects of different towels on PVC fire smoke in wet and dry conditions respectively. And the protection and filtration mechanism of the wet and dry towels for the indoor fire smoke was analyzed combining with the surface morphology of the towels before and after the smoke filtration. The result shows that, 3 kinds of towels have certain protective and filtering effect on PVC material fire smoke. No matter in dry or wet state, the 3 kinds of towels have the same degree of pros and cons for the protection and filtering effect of smoke, i.e. pure cotton towel ＞gauze towel ＞microfiber towel. The protective filtering effect of wet towel on CO, NOx and HCl gas is better than that of dry towel. Compared with dry towels, the protective filtering effect of wet towels on CO gas and HCl gas is greatly improved, and the protective filtering effect of HCl gas is nearly doubled.