基于突變理論設(shè)冷水泵轉(zhuǎn)軸功能安全完整性評估

文檔作者：趙林，王雪，劉佑達(dá) 文檔來源：清華大學(xué)精密測試技術(shù)及儀器國家重點(diǎn)實(shí)驗(yàn)室		點(diǎn) 擊數(shù)：	更新時間： 2023年01月31日
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第37卷第12期
2016年12月
儀器儀表學(xué)報
Chinese Journal of Scientific Instrument
V01．37 No．12
Dec．2016
基于突變理論設(shè)冷水泵轉(zhuǎn)軸功能安全完整性評估
趙林，王雪，劉佑達(dá)
(清華大學(xué)精密測試技術(shù)及儀器國家重點(diǎn)實(shí)驗(yàn)室北京100084)
摘要：面向核電設(shè)備冷卻水泵(簡稱核電設(shè)冷水泵)轉(zhuǎn)軸的功能安全評估是減少核電設(shè)備安全問題的重要手段之一。針對核
電設(shè)冷水泵轉(zhuǎn)軸故障突變時功能安全評估問題，提出了一種基于突變理論的核電設(shè)冷水泵轉(zhuǎn)軸功能安全完整性評估方法。首
先，從核電設(shè)冷水泵轉(zhuǎn)軸多傳感器監(jiān)測數(shù)據(jù)中提取故障特征，故障特征融合結(jié)果作為預(yù)測參數(shù)；其次，采用預(yù)測參數(shù)構(gòu)建轉(zhuǎn)軸性
能衰退軌跡路徑，基于蒙特卡羅方法計(jì)算轉(zhuǎn)軸累積失效概率；最后，基于尖點(diǎn)突變理論計(jì)算轉(zhuǎn)軸危險失效概率，并評估轉(zhuǎn)軸功能
安全完整性等級，并采用核電設(shè)冷水泵轉(zhuǎn)軸狀態(tài)監(jiān)測數(shù)據(jù)進(jìn)行了實(shí)驗(yàn)驗(yàn)證。結(jié)果表明，當(dāng)核電設(shè)冷水泵轉(zhuǎn)軸存在故障突變時，
基于突變理論結(jié)合性能衰退狀態(tài)監(jiān)測的方法，可以提高核電設(shè)冷水泵轉(zhuǎn)軸功能安全完整性評估結(jié)果的準(zhǔn)確性。
關(guān)鍵詞：設(shè)備冷卻水泵轉(zhuǎn)軸；功能安全完整性；性能監(jiān)測；故障突變
中圖分類號：TP207 THl7 文獻(xiàn)標(biāo)識碼：A 國家標(biāo)準(zhǔn)學(xué)科分類代碼：460—99
Functional safety integrity evaluation of the component cooling water pump
shaft based on the catastrophe theory
Zhao Lin，Wang Xue，Liu Youda
(State Key Laboratory of Precision Measurement Technology and Instruments，Tsinghua University，Belting 100084，China)
Abstract：The functional safety evaluation of the component cooling water pump shaft is one of the important means to decrease nuclear
equipment safety problems in nuclear power plants．Aiming at the functional safety evaluation of the component cooling water pump shaft in
abrupt faults in nuclear power plants，a method for the functional safety integrity evaluation of the component cooling water pump shaft in
nuclear power plants is proposed based on catastrophe theory in this paper．Firstly，the fault characteristics aye extracted from the
monitoring data of multiple sensors on the component cooling water pump shaft in nuclear power plants，and the fusing results of the fault
characteristics ale taken as the prognostic parameters．Secondly．the prognostic parameters are adopted to constract the degradation
trajectory path of the shaft performance，and the cumulative failure probability of the shaft is calculated based on Monte Carlo method．
Finally，the dangerous failure probability of the shaft is calculated based on the cusp catastrophe theory，and the functional safety integrity
level of the shaft is evaluated afterward．The condition monitoring data of the component cooling water pump shaft in nuclear power plant
were adopted to carry out experiments．The experiment results demonstrate that when abrupt fault exists in the component cooling water
pump shaft in nuclear power plants，the proposed method based on catastrophe theory combining performance degradation condition monitoring
Can improve the functional safety integrity evaluation accuracy of the component cooling water pump shaft in nuclear power plants．
Keywords：component cooling water pump shaft；functional safety integrity；performance monitoring；abrupt fault
1 引言
面向核電設(shè)備冷卻水泵(簡稱核電設(shè)冷水泵)轉(zhuǎn)軸
的功能安全評估是減少核電設(shè)備安全問題的重要手段之
收稿13期：2016．1 1 Received Date：2016．1 1
*基金項(xiàng)目：國家自然科學(xué)基金(61272428)項(xiàng)目資助
一。核電設(shè)冷水泵轉(zhuǎn)軸在服役運(yùn)行過程中易發(fā)生由于不
平衡、不對中等導(dǎo)致的碰摩故障，影響核電設(shè)冷水泵的安
全可靠運(yùn)行。核電廠實(shí)施核電設(shè)冷水泵轉(zhuǎn)軸功能安全預(yù)
測維護(hù)措施，通過評估核電設(shè)冷水泵轉(zhuǎn)軸功能安全完整
性，及時掌握核電設(shè)冷水泵轉(zhuǎn)軸運(yùn)行過程中出現(xiàn)的潛在
萬方數(shù)據(jù)

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