汽轮机通流部分状态监测与诊断方法研究及应用  

Method Research and Application and of Flow Passage Condition Monitoring and Diagnosis for Steam Turbine

作　　者：王加勇 邓德兵[2] 赵清森[2] 柏余杰 WANG Jia-yong;DENG De-bing;ZHAO Qing-sen(Suzhou Vocational Institute of Industrial Technology;Suzhou Nuclear Power Research Institute)

机构地区：[1]苏州工业职业技术学院,江苏苏州215004 [2]苏州热工研究院有限公司

出　　处：《电站系统工程》2023年第4期47-49,共3页Power System Engineering

摘　　要：汽轮机通流部分状态监测与诊断是实现火电机组状态检修的重要前提。提出应该根据同一主蒸汽流量的级组特征通流面积的变化情况来反映通流部分面积的变化情况。同时,针对汽轮机主蒸汽流量目前尚无准确在线监测方法的问题,提出采用中压缸排汽压力作为主蒸汽流量大小的特征参数。同时,在诊断过程中,通过测量所得到的结果在很大程度上受到系统不可避免的测量误差的影响,这种误差将会影响到特征通流面积与其标准值之间的偏差,因此给出了特征通流面积的置信区间。通过实际诊断案例表明:所提出的汽轮机通流部分状态监测与诊断方法,可以实现对汽轮机通流部分状态失常的早期发现,为挖掘汽轮机的节能潜力奠定基础。Monitoring and diagnosis of the steam turbine flow passage is the most important premise to achieve the power plant condition maintenance.In order to reflect the state change in turbine passage accurately,the characteristic flow area of steam turbine stage should be investigated in the same main steam flow.Because main steam flow on-line measuring method accuracy is deficient,a new method based on the exhaust pressure of IP cylinder as character parameter of main steam flow is proposed.Meanwhile,in the diagnostic process,the measuring result is strongly influenced by the system inevitable measuring error which directly affects the deviation between the characteristic flow area and its standard.Thus confidence intervals of characteristic flow area is given to eliminate the system errors.Finally,the actual diagnostic example in the article indicates the practicability of the method.It can be used to diagnose the flow passage of steam turbine and provide reliable basis to find out the steam turbine potential.

关 键 词：汽轮机 通流部分 状态监测 状态诊断 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]