| 油浸电力变压器总是存在着发生火灾的危险 |
| 添加时间：2019/7/12 15:22:52 浏览次数： |
| 油浸电力变压器总是存在着发生火灾的危险。无论是电力变压器铁芯产生的持续高温，还是由于短路、过电压等的内部电弧产生的高能放电引起的突发性短暂高温，只要能使变压器油的温度大于400℃，就会分解出各种可燃气体，致使变压器内部压力增大。 Oil-immersed power transformers are always in danger of fire. Whether it is the continuous high temperature generated by the core of power transformer or the sudden short-term high temperature caused by the high-energy discharge caused by the internal arc such as short circuit and overvoltage, as long as the temperature of transformer oil is higher than 400 C, all kinds of combustible gases will be decomposed and the internal pressure of transformer will increase. 变压器内部超压造成其自身薄弱部位(如变压器瓷套管、器身焊缝、防爆口等处)破成裂口，使变压器油及产生的可燃气体一起从裂口中喷出，喷出的变压器油及可燃气体的混合物在与空气接触摩擦后，就产生火焰起火甚至爆炸，造成重大损失。 The overvoltage inside transformer causes its own weak parts (such as transformer porcelain bushing, welding seam, explosion-proof opening, etc.) to break into cracks, which causes transformer oil and combustible gas to eject from the cracks together. The mixture of transformer oil and combustible gas ejected from the cracks will produce flame ignition or even explosion when it rubs in contact with air. Major losses have been caused. |
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