.机组仪
表
关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf
联锁设置的相关标准一、公司仪表联锁保护系统管理
制度
关于办公室下班关闭电源制度矿山事故隐患举报和奖励制度制度下载人事管理制度doc盘点制度下载
(附件1：)大机组联锁设置原则(一)大机组轴瓦温度联锁：止推瓦温度测量要求每个面设三个测温点，采用三取二联锁。如果只能安装二个测温点，则采用二取二联锁，但必须设置温度报警。支撑瓦温度联锁，机组中无轴系振动联锁保护信号的，设轴瓦温度联锁。在机组中已配置轴系振动联锁保护的，不设支撑瓦温度联锁。但必须设置支撑瓦温度高报警信号。(二)大机组油压低低联锁：润滑油压需采用三取二联锁。为了解决油泵切换过程中油压瞬变问
题
快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题
，润滑油压低低联锁逻辑中加3S延时（即润滑油压低低信号持续时间大于3S后才启动联锁）。汽轮机速关油压、动力油压低低联锁：在机组安全保护上，速关油压、动力油压低低有机械保护，无特别要求不设联锁。润滑油压变送器的取压口须在润滑油总管的末端。(三)重要机组透平转速高联锁设置三个独立的转速测量，采取三取二联锁。(四)重要大机组都必须设置轴振动、轴位移联锁。同一断面X、Y方向轴振动联锁采取二取二联锁。机组轴位移要求同一端安装三个位移传感器，采取三取二联锁。如果只安装二个位移传感器的采取二取二联锁，必须设置二个位移传感器测量偏差报警。(五)对大机组电机三组定子温度设置联锁，但须采取三取二方式，设置温度报警。(六)机组停机后的工艺联锁。考虑到现场等因素，应以机组实际运行状态作为工艺联锁启动条件。汽轮机机组用速关油压低低（三取二）做机组、工艺联锁word范文.触发信号之一，联锁值除特殊要求外取0.4Mpa。开机时速关油压低低切除，开机正常后即投用。电机机组用电机运行状态（来自电气）做工艺联锁触发信号之一。以上信号同时输出到报警灯屏指示台，指示机组停机。仪表：机械：电气：机动处长：二、石油化工安全仪表系统设计规范word范文.三、API670标准word范文.word范文.word范文.MachineryProtectionSystemsAPISTANDARD670FOURTHEDITION,DECEMBER20005.4.2.4Theradialshaftvibrationshutdownsystemshallbefieldchangeablesothatone(singlelogic)orboth(dualvotinglogic–seenote)transducersignalsmustreachorviolatethesetpointtoactivateashutdown(danger)relay.Dualvoting(two-out-of-two)logicshallbestandard.Note:Inadualvotinglogicsystem,althougheachchannelmayhavereachedorviolateditsrespectiveshutdown(danger)setpointsatdifferenttimes,bothchannelsmustbejointlyandcontinuouslyatorabovetheshutdown(danger)setpointforthetimedelayspecifiedin========================================word范文.5.4.3.4Theaxialpositionshutdownsystemshallbefieldchangeablesothatone(singlelogic)orboth(dualvotinglogic,seenotefollowing)transducersignalsmustreachorviolatetheshutdown(danger)setpointtoactuatetheshutdown(danger)relay.Dualvoting(twooutoftwo)logicshallbestandard.Note:Inanaxialpositiondualvotinglogicsystem,althougheachchannelmayhavereachedorviolateditsrespectivepresetshutdown(danger)setpointsatdifferenttimes,bothchannelsmustjointlyandcontinuouslybeatorabovetheshutdown(danger)setpointsforthetimedelayspecifiedin5.4.1.5.dbeforetheshutdown(danger)relayactivates.Intheeventofthefailureofasingletransducerorcircuit,onlythecircuit-faultalarmandthealarm(alert)willactivate[thatis,theshutdown(danger)relaywillnotactivate].Theshutdown(danger)relaywillactivatewhenanyofthefollowingconditionsoccur:a.Bothaxialpositiontransducersorcircuitsfail.b.Eitherchannelhasfailed,andtheotherchannelhasviolatedtheshutdown(danger)setpoint.c.Bothchannelsjointlyviolatetheshutdown(danger)setpoint.5.4.1.5d.Withexceptionofelectronicoverspeeddetection,fixedtimedelaysforshutdown(danger)relayactivationthatarefieldchangeable(viacontrolledaccess)torequirefrom1to3secondssustainedviolation.Adelayof1secondshallbestandard.word范文.word范文
浙公网安备 33021202002483