仪表及控制系统故障案例.doc

该【仪表及控制系统故障案例 】是由【游园会】上传分享，beplayapp体育下载一共【60】页，该beplayapp体育下载可以免费在线阅读，需要了解更多关于【仪表及控制系统故障案例 】的内容，可以使用beplayapp体育下载的站内搜索功能，选择自己适合的beplayapp体育下载，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此beplayapp体育下载到您的设备，方便您编辑和打印。目录第一章液位测量仪表故障处理...................................................................................................10案例1水处理除碳塔浮筒液位计故障......................................................................................11案例2焦化封油罐浮筒液位计失灵故障..................................................................................11案例3蒸汽冷凝液回收罐液位无指示......................................................................................12案例4浮筒液位计指示偏差大.................................................................................................12案例5电动浮筒液位计指示不变化..........................................................................................12案例6电动浮筒液位计指示偏低.............................................................................................12智能浮筒变送器指示不准确..........................................................................................12案例7案例8浮筒液位变送器输出线性不好......................................................................................13案例9浮筒液位计液位下降仪表不跟随变化..........................................................................13案例10汽液混合引起液位波动...............................................................................................13案例11罐区液位计全部失灵...................................................................................................14双法兰差压变送器测硫酸罐液位,仪表指示变化波动大..........................................15案例12案例13双法兰液位变送器测量指示不随实际液位变化.........................................................15案例14漏电流对仪表指示的影响...........................................................................................15案例15介质的密度变化致使液位测量指示不准.....................................................................16案例16VCM单体挥发性对仪表指示的影响.............................................................................16案例17差压变送器测界面,仪表指示不准............................................................................17案例18反吹风液位计故障处理...............................................................................................17案例19反吹气对差压式液位测量的影响................................................................................18案例20差压变送器测液位,指示不变或变化小.....................................................................18案例21取压阀盘根泄漏造成汽包液位计虚假指示.................................................................19案例22差压变送器测丙烯液位因汽化指示不准.....................................................................19案例23隔离液流失引起差压液位计指示不准.........................................................................19案例24接线松动引起液位指示不准........................................................................................20案例25循环气换热器补水罐液位指示波动............................................................................20案例26漏电流引起控制室DCS指示与现场变送器指示不符..................................................20案例27雷达液位计无法正常指示液位....................................................................................21案例28雷达液位计冬季因天线结冰,测量显示最大.............................................................21案例297600系列雷达物位计因参数设定错误导致指示不准.................................................21案例30雷达液位计因接线松动引起表头报警.........................................................................22案例31导波雷达因介质自聚,导致冒罐事故发生.................................................................22案例33油水分离器界面仪表不指示,影响工艺生产.............................................................22案例34伴热太强导致水洗塔液面指示波动故障.....................................................................22案例35液位假指示居高不下...................................................................................................23案例36中试料位表指示偏高...................................................................................................23案例37负压阀漏隔离液造成液位指示偏高............................................................................24案例38单法兰料位计指示偏高...............................................................................................24案例39混合器插入式单法兰变送器液位指示偏低.................................................................24案例40气柜污水泵站污水池投入式液位计无指示.................................................................24案例41罐表选型不合适导致冒罐...........................................................................................24案例42仪表安装不规范造成指示异常....................................................................................251案例43浮球液位开关故障导致造粒单元联锁停车.................................................................25案例44音叉料位计假报警故障处理........................................................................................25案例45音叉料位计接线盒进水故障处理................................................................................25案例46音叉料位开关假报警故障处理....................................................................................26案例47音叉料位计假报警的处理...........................................................................................26案例48液位开关动作迟缓或不动作........................................................................................26案例49焦化污油泵站液位开关故障........................................................................................26案例50液位开关选型不合适,导致联锁系统不动作.............................................................27案例51仪表选型不对导致误指示联锁停车............................................................................27第二章流量测量仪表故障处理...................................................................................................27案例1高准质量流量计不计量.................................................................................................28案例2质量流量计输入信号线接错,DCS无指示。................................................................29案例3高准DS100型质量流量计测量误差偏大.......................................................................29质量流量计高限报警故障处理......................................................................................29案例4案例5安装不合理造成质量流量计测量误差..........................................................................29案例69712质量流量变送器送电无指示.................................................................................30案例7高准1700系列质量流量计变送器不通讯.....................................................................T28质量流量计指示错误................................................................................30案例9工艺介质发生相变造成质量流量计测量故障...............................................................30案例10流量计未调零造成质量流量计测量误差.....................................................................31案例11蒸汽流量计计量数据差距大........................................................................................31案例12差压变送器输出指示零下...........................................................................................31案例13变送器输出信号偏高或偏低........................................................................................32案例14差压流量计指示值较真实流量偏低............................................................................32案例15循环气流量指示偏低...................................................................................................32案例16差压流量计指示突然回零...........................................................................................32案例17工艺原因造成内藏孔板流量变送器无指示.................................................................33案例18参数设置不对,引起ABB多参数智能变送器测量不准确..........................................33案例19火炬排放热式气体流量计指示不正常.........................................................................34案例20EFT-3150B型智能电靶变送器输出不准确..................................................................34案例21涡轮流量计流量指示突然为零....................................................................................35案例22智能涡轮流量计指示不准...........................................................................................35案例23造粒水流量低报导致造粒机组停车............................................................................35案例24计量表供电及指示故障...............................................................................................35案例25霍尼韦尔ST3000变送器信号中断故障.......................................................................35案例26旋涡流量计指示波动故障...........................................................................................36案例27EJA智能差压变送器指示误差大或无输出..................................................................36案例28探头安装不合格引起超声波流量计无指示.................................................................36案例293051差压变送器指示偏低...........................................................................................37案例30差压变送器正负取压口接反造成测量故障.................................................................37案例31CFB炉1#炉给煤机煤流量波动大................................................................................38案例32差压变送器冲液后正常,一段时间指示逐渐降低......................................................38案例33温度对电磁流量计测量的影响....................................................................................38案例34转子流量计改型为电磁流量计,输出发生波动.........................................................392案例35接地不好致电磁流量计指示偏低................................................................................39案例36造粒冷却水流量低故障处理........................................................................................39案例3715114S智能变送器编程错误的修改..........................................................................40案例38共聚单体流量计指示偏低...........................................................................................40案例39循环气压缩机K-4003油系统缓冲器流量指示无变化................................................40案例40FT-4003波动大,影响产品质量.................................................................................40案例41流量开关报警造成氮气压缩机联锁停车.....................................................................41案例42空压站FIC-101二次表指示零下................................................................................41第四章温度测量仪表故障处理...................................................................................................41案例1热电偶因物料压砸弯曲,造成温度无指示...................................................................42案例2LDPE高压铠装热电偶安全栅故障处理.........................................................................42案例3LDPE高压铠装热电偶故障处理.....................................................................................42案例4热电偶损坏造成压缩机停车..........................................................................................43热电偶测量温度值显示偏高..........................................................................................43案例5案例6环境温度及外部因素对温度指示的影响.......................................................................43案例7TT-E211A指示坏值故障处理.........................................................................................44案例8TE224温度指示值不稳..................................................................................................44案例8反应器壁温指示偏低的故障处理..................................................................................45案例9电解槽槽温指示偏高且小范围波动..............................................................................45案例11蒸发一效外温指示明显与事实不对............................................................................45案例12热电阻安全栅故障,使温度指示值与实际不相符......................................................46案例13醚化装置TIC109测量故障分析..................................................................................46案例14空压站J301热电阻TI-301指示不正常.....................................................................46案例15空压站J201C出口温度偏低........................................................................................46案例16空压机一、二段温度波动故障....................................................................................46案例17T301A一段出口温度TI301A指示偏高........................................................................47案例18查看故障仪表记录曲线及时判断仪表故障.................................................................47案例19TE226断多路温度信号无指示.....................................................................................47案例21检查不慎导致造粒机组停车........................................................................................48案例22反应器温度控制指示突然变零....................................................................................48案例24循环水温度无指示.......................................................................................................48案例25绝缘性能差,热电阻指示偏低....................................................................................48案例26仪表接触不好导致蒸汽过热炉停车............................................................................48案例27穿线管进水导致尾气压缩机C-301停车.....................................................................49第四章压力测量仪表故障处理....................................................................