关键词: 抽油泵, 故障树, 可靠性, 模糊综合评判, 组合分析方法

Abstract: Fault tree analysis can be used to trace out the logic causality of the invalidation of system and machine parts. The common factors influencing reliability of oil well pump can be determined with this method. The operated oil well pumps often have some indeterminate individual features. The fuzzy theory as the communication means for studying the indeterminacy can offset the lack of fault tree analysis. A combination method of the fault tree analysis and fuzzy comprehensive estimation was established to evaluate the reliability of oil well pump. Based on the analysis results given in the relational literatures, some real calculations and analyses were carried out. The practical applications indicate that the fuzzy comprehensive evaluation method is feasible to evaluate the performance and reliability of oil well pump. Based on the evaluated results, the measures for improving the reliability of oil well pump can be established.

Key words: oil well pump, fault tree, reliability, fuzzy comprehensive estimation, combination analysis method