本文選題：汽輪機故障 + 數(shù)字信號處理�。� 參考：《華北電力大學》2017年碩士論文

【摘要】：伴隨著我國經(jīng)濟的迅猛發(fā)展,超臨界600MW發(fā)電機組于2000年之后大批量投入生產(chǎn)運營,已成為我國火力發(fā)電企業(yè)的主力機組�；痣姀S汽輪機是電力企業(yè)主要設(shè)備設(shè)施,是能量轉(zhuǎn)換的核心部件。我國600MW超臨界機組在段時間內(nèi)的大面積投產(chǎn),汽輪機廠在吸收國外經(jīng)驗及加快設(shè)備制造過程較快,汽輪機投產(chǎn)運行過程中逐漸暴露出由于部分吸收改進的結(jié)構(gòu)設(shè)計不合理、檢修安裝現(xiàn)場的部套安裝質(zhì)量低、設(shè)備監(jiān)測分析裝置可靠性不高、精度差和設(shè)備故障預警裝置不及時等產(chǎn)生的各種異常。這些問題會直接導致機組停運及各類事故,給發(fā)電企業(yè)及電網(wǎng)帶來經(jīng)濟損失。為此開展超臨界600MW機組振動常見故障處理的收集及歸納。針對目前電廠廣泛采用的在線監(jiān)測裝置的升級改造工作是能源行業(yè)汽輪機的研究方向。本文研究了600MW汽輪機機組振動常見故障如葉片斷裂、轉(zhuǎn)子裂紋、動靜碰摩等相關(guān)故障,重點梳理超臨界600MW汽輪機近年來的主要故障統(tǒng)計分布及特征,并開發(fā)了一套基于IEEE 802.11的旋轉(zhuǎn)機械振動在線監(jiān)測與故障診斷系統(tǒng)。
[Abstract]:With the rapid development of China's economy, supercritical 600MW generating units have been put into production and operation in large quantities since 2000, and have become the main units of thermal power generation enterprises in China. Steam turbine in thermal power plant is the main equipment of power enterprise and the core component of energy conversion. When 600 MW supercritical unit is put into production in a large area in a period of time in China, the steam turbine plant is absorbing foreign experience and speeding up the manufacturing process of the equipment. During the operation of the steam turbine, the unreasonable structural design due to partial absorption and improvement is gradually exposed. All kinds of anomalies such as low installation quality, low reliability of equipment monitoring and analysis device, poor precision and equipment fault warning device are caused by the low quality of part sleeve in the site of maintenance and installation. These problems will lead directly to the outage of generating units and all kinds of accidents, and bring economic losses to power generation enterprises and power grids. To this end, the collection and induction of common vibration faults of supercritical 600 MW units are carried out. It is the research direction of steam turbine in energy industry to upgrade and renovate the on-line monitoring device which is widely used in power plant at present. In this paper, the common vibration faults of 600MW steam turbine such as blade breakage, rotor cracks, dynamic and static rub-impact faults are studied, and the statistical distribution and characteristics of main faults of supercritical 600MW steam turbine in recent years are discussed. An on-line vibration monitoring and fault diagnosis system for rotating machinery based on IEEE 802.11 is developed.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM621

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本文編號：2097803