考察了变压器油的温度对Teflon-AF/陶瓷复合膜组件油气分离性能的影响.当变压器油温由40℃增加到60℃时,Teflon-AF/陶瓷复合膜不仅能够缩短各故障气体的平衡时间,而且还能显著提高气体的平衡浓度,其中H2的平衡浓度提高约30％,CO提高约40％,烃类提高约10％.实验表明,恰当的油温能够有效改善Teflon-AF/陶瓷复合膜脱气效果.根据这一规律设计制作了具有油温恒定控制功能的脱气装置,使变压器油温恒定在60℃,可以在1.5h内实现6种故障特征气体的油气平衡,而且监测数据更加准确可靠,有望在变压器在线监测产品中推广应用.
The effect of oil temperature on the oil-gas separation characteristics of Teflon-AF/ceramic composite membrane module was studied.When the temperature increased from 40 ℃ to 60 ℃,the Teflon-AF/ceramic composite membrane could not only shorten the equilibrium time of all the fault gases,but also remarkably enhance the equilibrium concentration of H2 by about 30％,CO by about 40％,and hydrocarbons by about 10％,indicating that the proper oil temperature can improve the degassing efficacy of this membrane.A temperature controllable degassing machine has been designed based on the experimental results and on which,the oil-gas equilibrium time reduced from 5 h to 1.5 h and the monitoring data obtained was more precise and repeatable.The machine is quite applicable to the dissolved gas-in-oil monitoring system.
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