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INFLUENCE OF OPERATION CONDITIONS ON MEAN TIME BETWEEN FAILURES OF VALVE ASSEMBLIES IN GAS DISTRIBUTION NETWORKS

机译:配气网络中操作条件对阀门组件故障平均时间的影响

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We have examined the requirements of valve assemblies used in gas distribution networks, reviewed the materials used for making packing surfaces of ball cocks, analyzed the basic causes of failures, conducted experimental studies, and determined the contribution of each wearing process (wearing due to friction of packing surfaces of shutoff unit, fretting, and attack of gas-abrasive stream) that causes failure of packing surfaces of valve assemblies. Based on the studies conducted on determination of wear resistance of materials and the analysis made of the contribution of each factor, we have built a mathematical model to determine the mean time between failures of valve assemblies for various operation conditions.
机译:我们检查了气体分配网络中阀门组件的要求,审查了用于制造球阀填料表面的材料,分析了故障的基本原因,进行了实验研究,并确定了每个磨损过程(由于摩擦而磨损)的原因截止单元的填料表面的磨损,微动和气流的侵蚀)导致阀组件填料表面的损坏。基于对材料耐磨性的确定研究以及对每个因素的贡献进行的分析,我们建立了一个数学模型来确定各种工况下阀组件故障之间的平均时间。

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