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Detection of Volatile Impurities in Turbine Oils by the Heat-Pulse Testing Method

机译：通过热脉冲测试方法检测涡轮机油中的挥发性杂质

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摘要

The research is aimed at development and implementation of methods and devices to control critical sections of the oil system of the power equipment that operates in the real time mode. The task was to develop a method for rapid detection of volatile impurities in turbine oils. The approach to the study is based on quantitative assessment of the short-term thermal stability of the substance that is formally associated with the content of the volatile impurity. The approach was selected on the basis of the results of search experiments taking into consideration the formulation of requirements for the method and the device, viz., (1) the method should reliably determine the moisture content in the range of 10-150 g of the impurity per ton of oil and (2) the device is to be applicable "in situ." For this purpose, a variant of the method of the controlled pulse heating of a wire probe, a resistance thermometer, has been developed. The advantages of the method are its speed, sensitivity to small contents of volatile impurities regardless of the nature of the impurity, and smallness of methodologically contributed perturbation. The heating conditions of the probe most sensitive to the appearance of moisture-including its trace amounts-in the system, has been defined. The duration of the measurement is on the order of milliseconds; the heat flux density through the surface of the probe reaches 1 MW/m~2. The essence of the method consists in measuring, in the characteristic time interval, the temperature of the thermal instability onset associated with the content of the volatile impurity. The approach proposed by the authors is aimed at increasing the lifetime of the oil and preventing unpredictable failures of the operating equipment.
机译：该研究旨在开发和实施用于控制以实时模式运行的动力设备的机油系统关键部分的方法和设备。任务是开发一种快速检测涡轮机油中挥发性杂质的方法。该研究方法基于对与挥发性杂质含量正式相关的物质的短期热稳定性的定量评估。方法的选择是基于搜索实验的结果，并考虑了方法和设备的要求，即（1）该方法应可靠地确定10-150 g的水分含量。每吨油中的杂质和（2）该装置应“就地”使用。为了这个目的，已经开发了线探针，电阻温度计的受控脉冲加热方法的变型。该方法的优点是它的速度快，对杂质含量少的挥发性杂质的敏感性（与杂质的性质无关）以及方法学上引起的扰动很小。已经定义了对系统中的水分（包括痕量）的外观最敏感的探针的加热条件。测量的持续时间约为毫秒。通过探头表面的热通量密度达到1 MW / m〜2。该方法的本质在于，在特征时间间隔内测量与挥发性杂质含量相关的热不稳定性起始温度。作者提出的方法旨在延长机油的使用寿命并防止操作设备发生不可预测的故障。

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  • 来源
    《Thermal engineering》 |2016年第7期|516-521|共6页
  • 作者

    P. V. Skripov; V. A. Demin; V. V. Shangin; A. A. Starostin;

  • 作者单位

    Institute of Thermal Physics, Ural Branch, Russian Academy of Sciences, ul. Amundsena 107a, Ekaterinburg, 620016 Russia;

    Engineering and Technical Center of Sverdlovsk oblast, Branch of OAO Volzhskaya TGK,pr. Lenina 38, Ekaterinburg, 620075 Russia;

    Institute of Thermal Physics, Ural Branch, Russian Academy of Sciences, ul. Amundsena 107a, Ekaterinburg, 620016 Russia;

    Institute of Thermal Physics, Ural Branch, Russian Academy of Sciences, ul. Amundsena 107a, Ekaterinburg, 620016 Russia,Ural Federal University, ul. Mira 19, Ekaterinburg, 620002 Russia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    turbine oil; volatile impurities; wire probe; pulse heating;

    机译：汽轮机油;挥发性杂质;线探针脉冲加热;

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