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首页> 外文会议>International Conference Complex Systems: Control and Modeling Problems >Method of Assessing the Sensitivity of the Dust-air Mixture to Thermal Effects Caused by Electric Discharge
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Method of Assessing the Sensitivity of the Dust-air Mixture to Thermal Effects Caused by Electric Discharge

机译：评估粉尘空气混合物对放电引起的热效应的敏感性的方法

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Sensitivity to electrical discharge is an important characteristic of the material that allows one to judge the possibility of its practical use and aging. It is also used in the compiling of safety requirements for working with media filled with this substance, its vapors or dust. Of particular interest is the assessment of sensitivity to the thermal effects of dusty air mixture caused by electric discharge, because it determines how to conduct technological work in areas with high risk and particularly hazardous areas. Without such premises it is impossible to imagine the construction, metallurgical, mining, chemical, military and other industries. The paper proposes a mathematical and equivalent electrical model of the installation for experiments to assess the sensitivity to the thermal effects of dusty air mixture caused by an electric discharge. As a result of the analysis of the obtained model, the possibilities of regulating the energy of the emitted spark discharge by changing certain parameters of the elements of the installation are indicated. A model of the spark discharge as a load element of the experimental setup is obtained taking into account the unevenness of the discharge gap resistance. This model is adapted for use on digital computers. On the basis of the obtained model, the analytical dependence of the rate of heat release of the particles of matter in the dust-air mixture under the influence of a spark discharge on the parameters of the installation, the particles of the substance and the air environment is established, which is necessary to assess the sensitivity to thermal effects of the dust-air mixture in the considered information-measuring system. Also, the visual representation of the distribution of thermal energy formed by the spark discharge in the particles of matter depending on the size and area of their contact with the discharge channel is shown.
机译：放电敏感性是该材料的重要特征，它使人们能够判断其实际使用和老化的可能性。它也可用于编制安全要求，以处理填充有该物质，其蒸气或粉尘的介质。特别引起关注的是对放电引起的多尘空气混合物的热效应的敏感性的评估，因为它决定了如何在高风险，特别是危险区域进行技术工作。没有这样的前提，就无法想象建筑，冶金，采矿，化学，军事和其他行业。本文提出了该设备的数学和等效电气模型，用于实验，以评估对放电引起的粉尘空气混合物的热效应的敏感性。作为对所获得的模型的分析的结果，表明了通过改变设备的元件的某些参数来调节所发射的火花放电的能量的可能性。考虑到放电间隙电阻的不均匀性，获得了作为实验装置的负载元件的火花放电模型。该模型适用于数字计算机。根据获得的模型，在火花放电的影响下，粉尘-空气混合物中物质颗粒的热释放速率对设备，物质颗粒和空气的参数的分析依赖性建立环境，这对于评估信息测量系统中粉尘-空气混合物对热效应的敏感性是必要的。而且，示出了由火花放电在物质颗粒中形成的热能的分布的视觉表示，其取决于它们与放电通道接触的大小和面积。

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