离心压缩机叶轮冲蚀失效的可靠性研究

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Reliability Study of Centrifugal Compressor Impeller Based on Erosion Failure

Zhu Wangyou Hou LeiXiong Zhiyi （CollegeofMechanical and Transportation Engineering，China UniversityofPetroleum（Beijing））

Abstract：There is alack of systematic analysison how erosion behavior affcts the long-term reliability of centrifugal compressor impeller（hereinafterreferred toas impeller）.In thispaper，bycombining erosion failure andreliabilityanalysis，a structural reliabilitycalculation modelof impeler basedon erosion failure was established with the synergy of numerical simulation，data-driven simulationand Monte Carlo simulation.This model enables thequantitativecalculationofthestructuralreliabilityofimpeller.Theresultsshow that，atdiferentrotationspeeds，theerosion-induced deteriorationof theimpellerisfastestintheoperation periodof1-3year，and it is relativelyfastintheoperationtimeof2-3year，sotheimpellerrotorshouldbetestedforcracks.Intheoperation period of 1-6 year， the failure rate due to erosion ranges from 16. 13% to 84.35% at low rotation speed （5，660r/ （204号 min），and from 83.91% to 99.84% at high speed （ 9，960r/min ）.Thus，the impeller should avoid long-term operation at high speed.The research findings provide a reference for the reliability calculation and maintenance decision-making of compressor equipment in oil and gas stations.

Keywords：centrifugal compressor impellr；erosion failure；Monte Carlo simulation；reliability model; maximum erosionrate

0 引言

1 模拟研究

离心压缩机具有处理气量大、占地面积小、运行平稳、操作可靠等优势，在天然气长距离输送等工业领域中发挥了关键作用。（剩余13266字）