離心壓縮機(jī)葉輪沖蝕失效的可靠性研究

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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號(hào) 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 模擬研究

離心壓縮機(jī)具有處理氣量大、占地面積小、運(yùn)行平穩(wěn)、操作可靠等優(yōu)勢(shì)，在天然氣長(zhǎng)距離輸送等工業(yè)領(lǐng)域中發(fā)揮了關(guān)鍵作用。（剩余13266字）