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天然氣發(fā)動機供氣系統(tǒng)故障診斷方法研究

中文摘要天然氣發(fā)動機是石化及其他行業(yè)的重要動力機械，其設(shè)備狀態(tài)好壞直接關(guān)系到現(xiàn)場生產(chǎn)進度，因此對其開展故障診斷是一項十分必要的工作。天然氣發(fā)動機供氣系統(tǒng)是其與傳統(tǒng)發(fā)動機主要不同之處，對他的診斷方法研究有重要意義。本論文主要從以下三個方面進行了研究。1. 根據(jù)現(xiàn)場實際情況，制定故障診斷整體方案;確定現(xiàn)場記錄的設(shè)備參數(shù)及振動信號采集方案。2. 對設(shè)備參數(shù)和振動信號進行處理，提出相對轉(zhuǎn)速概念;通過比較選取峰峰值和絕對值作為特征指標(biāo);用最小二乘法擬合出設(shè)備特性曲線。3. 根據(jù)現(xiàn)場積累經(jīng)驗和試驗結(jié)果確定故障診斷標(biāo)準(zhǔn);對設(shè)備運行狀態(tài)作出預(yù)測。本文的研究為天然氣發(fā)動機故障診斷提供了發(fā)展新思路。關(guān)鍵詞:天然氣發(fā)動機供氣系統(tǒng) 故障診斷最小二乘法擬合: 問提問者：網(wǎng)友 | 2017-03-06

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你是想要翻譯吧?Abstract: Natrual gas engines are important power machineries in petrochemical industry and other industries, the operating state of these equipments have a direct relationship to the field productive progress. Therefore, it is indispensable to develop its fault diagnosis. Gas supplying system of natural gas engine is its principal difference to the traditional ones; So, it has great significance to study on its diagnosis methods.This thesis mainly researches on them from the following three aspects. 1. According to the field practical situation, frames the overall development of fault diagnosises; determines the equipment parameters from field records and the plans of how to gather vibration signals. 2. Deals with equipment parameters and vibration signals, proposes a concept of relative speed; By comparing and selecting abs Peak value and P-P value,regards them as feature indexes; utilizes the least-squares to match equipment characteristic curves. 3. Based on the field accumulated experiences and test results to determine cri.te.ri.a of fault diagnosis; to forecast operating states of equipments. This thesis provides new ideas for the development of fault diagnosis of the natrual gas engines Key words: Natrual gas engine, gas supplying system,fault diagnosis, the least-squares fit (沒把握“最小二乘法擬合”，這個太專業(yè)你自己來吧)絕對手工翻譯: 回答者：網(wǎng)友

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