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330MW机组汽机运行规程【一份十分经典的专业资料,打灯笼都找不到的好资料】.pdf

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330MW机组汽机运行规程【一份十分经典的专业资料,打灯笼都找不到的好资料】.pdf

1330MW机组汽机运行机组汽机运行机组汽机运行机组汽机运行规程规程规程规程2330MW机组汽机运行规程....................................................................................................................41范围...............................................................................................................................................42引用标准........................................................................................................................................53概述...............................................................................................................................................53.1机组投产日期..............................................................................................................................53.2汽轮机设备规范...........................................................................................................................53.3机组特殊运行工况.......................................................................................................................73.3.4机组允许在第4段具有供100t/h厂用汽的能力,仍能发出额定功率。但当夏季运行,冷却水温度为33℃又抽厂用汽时,机组不保证发出额定功率。........................................................................73.3.5本机组约有5%的流量裕量,并允许蒸汽压力为105%额定压力(17.5MPa)时连续运行,此时流量即为锅炉的最大计算流量MCR。当回热系统正常投运,背压为额定值时其机组的功率可达339MW。..........................................................................................................................................................73.4汽轮机控制系统...........................................................................................................................7汽轮机调节保安系统采用GE新华公司的数字式电调系统DEH-V,液压部分采用高压抗燃油电液伺服控制系统,动作快速、精确。............................................................................................................7汽轮机控制操作系统采用GE新华公司的XDPS400E分散控制系统,分为模拟量控制系统MCS、锅炉、汽机、发电机及厂用电顺序控制系统BT/SCS,G/SCS及数据采集系统DAS。............................73.4.3事故遮断系统............................................................................................................................7高压抗燃油系统中有六个电磁阀作为汽机保护。................................................................................7自动停机遮断电磁阀(20/AST)为四只,组成串并联布置,以提高自动停机的可靠性。自动停机的压力开关和传感器有轴承油压过低、抗燃油压过低、轴向位移超限、凝汽器真空过低、机组超速(110)、差胀超限、轴振大以及外部停机信号。..............................................................................................7机组超速保护控制器电磁阀(20/OPC)为两只,并联布置。当汽机转速达103%额定转速,OPC电磁阀动作,泄去高压调节汽门和中压调节汽门油动机下部油压,使高、中压调节汽门快速关闭。当机组转速降至额定转速,该两电磁阀关闭,从而由调节汽门控制机组转速在额定值。......................................7本机另设一套飞锤式机械超速保护机构和一个现场手动脱扣手柄,两者任一动作时将泄去低压安全油,由弹簧力开启隔膜阀,泄去高压抗燃油而停机。润滑油与抗燃油互不相通。......................................7注1、跳闸指令CH3接口为备用接口..........................................................................................82、轴振跳闸既接入ETS跳闸,又接入外部跳闸。..............................................................................83.4.3.2机械超速遮断装置...............................................................................................................8A机械超速飞锤一只,当汽机转速为额定转速的110时动作,遮断汽轮机.....................................83B汽机遮断手柄一只,位于前轴承箱,人为遮断汽轮机。..................................................................83.4.3.3汽轮机超速控制及超速保护(OPCOOO)....................................................................................8汽轮机正常运行时,发生下列情况之一,OPC保护动作.................................................................8A)未进行机械超速电超速试验时,汽轮机转速超过103额定转速(3090r/min)时.......................8B)汽轮机实际负荷>30额定负荷以上及发电机主开关跳闸...........................................................8C)瞬间甩负荷,当汽轮机的功率超过发电机功率的60~80时(甩部分负荷),OPC中快速阀门控制动作,快关中压调节汽门,延时瞬间再快速开启中压调门,维持电网负荷的稳定。OPC动作,泄去高、中压调节汽门油动机下部油压,高、中压调节汽门快关当汽机转速下降至3000rpm,OPC复原,汽轮机重新进汽,维持转速。............................................................................................................83.4.4EH供油系统..............................................................................................................................8向主机和小机调节保安系统各执行机构提供符合要求的高压工作油。EH油为具有良好的抗燃性和流体稳定性的磷酸脂抗燃液压油,工作油压为12.4MPa~14.8MPa。供油系统由集装式油箱、恒压柱塞式变量油泵、冷油器、加热器、蓄能器、油位计、油循环和油再生装置及必备的监视仪表组成。..............83.5旁路规范.....................................................................................................................................93.6辅机设备规范特性.......................................................................................................................94汽轮机的保护及联锁.....................................................................................................................154.2汽轮机联锁项目.........................................................................................................................165汽轮机的试验...............................................................................................................................175.1ETS系统通道试验......................................................................................................................175.2DEHV型调节系统静止试验........................................................................................................175.3OPC电磁阀试验..........................................................................................................................185.4103超速保护功能试验..............................................................................................................185.4.19视实际转速将至目标转速后1~4高压调节汽门、1~2中压调节汽门应自动打开,自动维持机组转速3000rpm.......................................................................................................................195.5110电超速保护功能试验...........................................................................................................195.6机械超速保护试验......................................................................................................................205.7危急保安器充油活动试验...........................................................................................................205.8主汽门、调节汽门松动及活动试验.............................................................................................215.9主汽门、调节汽门严密性试验....................................................................................................235.10运行中抽汽逆止门活动试验......................................................................................................235.11机组大联锁试验.......................................................................................................................245.12主机润滑油系统联锁保护试验..................................................................................................245.13抗燃油系统联锁保护试验.........................................................................................................265.14密封油系统联锁保护试验.........................................................................................................275.15发电机断水保护试验................................................................................................................295.16发电机定冷水系统联锁保护试验...............................................................................................305.17凝汽器灌水查漏.......................................................................................................................305.18除氧器安全门校验....................................................................................................................315.19循环水系统联锁及保护试验......................................................................................................315.20开式循环冷却水系统联锁保护试验...........................................................................................325.21闭式循环冷却水系统联锁试验..................................................................................................325.22凝结水系统联锁保护试验.........................................................................................................335.23给水系统联锁试验....................................................................................................................345.24加热器联锁保护试验................................................................................................................375.25真空严密性试验.......................................................................................................................3945.26真空系统联锁保护试验.............................................................................................................395.27汽轮机轴封供汽阀联动试验(正常运行时,轴封汽为高压轴封漏汽自密封)............................406汽轮机的启动...............................................................................................................................406.1总则...........................................................................................................................................406.2启动前的检查与准备..................................................................................................................426.3启动前的操作.............................................................................................................................426.4冷态启动....................................................................................................................................446.5热态启动....................................................................................................................................487汽轮机的停止...............................................................................................................................507.1停机前的准备工作......................................................................................................................507.2定参数停机................................................................................................................................50H汇报值长汽机打闸,检查发电机解列,锅炉MFT。.....................................................................517.3滑参数停机................................................................................................................................517.4汽机打闸后的工作......................................................................................................................527.5停机后的操作.............................................................................................................................527.6停机过程中的注意事项..............................................................................................................537.7停机后的维护.............................................................................................................................538辅机设备启停及运行.....................................................................................................................548.1转动机械运行与维护..................................................................................................................548.2主机润滑油系统.........................................................................................................................558.3油净化及处理.............................................................................................................................598.4抗燃油系统................................................................................................................................628.5循环水系统................................................................................................................................638.6开式循环冷却水系统..................................................................................................................668.7闭式循环冷却水系统..................................................................................................................678.7.3.13关闭闭式循环水A冷却器冷却水出水门。............................................................................688.8凝结水系统................................................................................................................................688.8.3.1检查备用凝结水泵备用良好。............................................................................................698.9除氧器(除氧器水箱中心线为零位).........................................................................................718.10低压加热器..............................................................................................................................738.11高压加热器..............................................................................................................................758.12电动给水泵组...........................................................................................................................778.13汽动给水泵组...........................................................................................................................808.14发电机密封油系统....................................................................................................................848.15发电机氢冷系统.......................................................................................................................868.16发电机定子冷却水系统.............................................................................................................898.17辅助蒸汽及轴封汽系统.............................................................................................................928.18真空系统..................................................................................................................................948.19凝汽器胶球清洗系统................................................................................................................958.19.2凝汽器胶球清洗装置的投入..................................................................................................958.20凝汽器半边隔离清洗查漏.........................................................................................................968.21快速冷却系统...........................................................................................................................969汽轮机的正常运行与维护..............................................................................................................989.1正常运行参数.............................................................................................................................989.2定期试验..................................................................................................................................10459.3运行中的维护和负荷调整.........................................................................................................1069.4运行方式..................................................................................................................................10610故障及事故处理........................................................................................................................10710.1故障及事故处理原则...............................................................................................................10710.2事故停机................................................................................................................................10810.3主、再热蒸汽参数异常...........................................................................................................11010.4凝汽器真空下降......................................................................................................................11110.5甩负荷....................................................................................................................................11310.6厂用电中断.............................................................................................................................11510.7汽轮机严重超速......................................................................................................................11610.8机组异常振动.........................................................................................................................11610.9汽轮机水冲击.........................................................................................................................11810.10汽轮机轴向位移增大.............................................................................................................11910.11低周波运行...........................................................................................................................11910.12DEH系统故障........................................................................................................................12010.13蒸汽管道故障.......................................................................................................................12110.14水管道故障...........................................................................................................................12110.15油系统、发电机及励磁机失火...............................................................................................12210.16主机润滑油系统工作异常......................................................................................................12210.17停机后盘车或油系统故障......................................................................................................12410.18抗燃油系统工作异常.............................................................................................................12510.19一般泵类及电动机事故处理通则...........................................................................................12510.20汽动给水泵系统事故处理......................................................................................................12810.21电动给水泵的事故处理.........................................................................................................13110.22真空泵组故障.......................................................................................................................13310.23循环水系统故障....................................................................................................................13410.24凝汽器..................................................................................................................................13610.25除氧器故障...........................................................................................................................13610.26高、低压加热器故障.............................................................................................................13810.27发电机密封油系统故障.........................................................................................................13910.28发电机氢系统故障................................................................................................................14110.29发电机定冷水系统故障.........................................................................................................142附录A(规范性附录)巡回检查时间和路线..........................................................................1501、巡回检查要求........................................................................................................................150巡回检查时应带对讲机、手电,听针,棉纱,应按照检查路线,对重要的就地水位计,油位计,温度表、压力表重点检查,不能走马观花,漏项不查,巡回检查中要耳听,鼻嗅,手摸。遇到问题要加强分析,果断正确处理,相互联系,及时汇报。检查后应及时记录所发现的问题。......................................1502、巡回检查时间........................................................................................................................150接班前主值班员全面检查室内DCS\DEH画面各参数副值班员全面检查机组各系统,巡操配合副值班员重点检查0米,除氧层。................................................................................................................1503、巡回检查路线............................................................................................................................150附录B(规范性附录)高压缸冷态不带旁路启动...................................................................151附录C(规范性附录)高压缸温态不带旁路启动...................................................................152附录D(规范性附录)高压缸热态不带旁路启动...................................................................153附录E(规范性附录)高压缸极热态不带旁路启动................................................................1546附录F(规范性附录)冷态带旁路启动..................................................................................155附录G(规范性附录)温态带旁路启动.................................................................................156附录H(规范性附录)热态带旁路启动.................................................................................157附录I(规范性附录)极热态带旁路启动...............................................................................158附录J(规范性附录)极热态带旁路启动曲线........................................................................159附录K(规范性附录)定压运行曲线....................................................................................160附录L(规范性附录)空、低负荷运行导则..........................................................................161附录M(规范性附录)主汽门前蒸汽参数曲线......................................................................162附录N(规范性附录)真空与饱和压力、饱和温度对照表.....................................................163330MW机组汽机运行规程1范围本规程规定了330MW汽轮发电机组汽轮机在启动、停机、事故处理、主辅机设备的检查、调整、维护及试验等的方法,适用于江苏徐矿综合利用发电有限公司2330MW循环流化床汽轮机组。2引用标准DL/T6091996(2005)300MW级汽轮机运行导则DL501192电力建设施工及验收技术规范汽轮机组篇82水电技字第63号电力工业技术管理法规83水电电字第47号火力发电厂高压加热器运行维护守则国电发1999579号汽轮发电机运行规程国电发2000589号防止电力生产重大事故的二十五项重点要求(火电厂动力部分)厂家有关设备运行资料。3概述3.1机组投产日期机组编号1机2机投产日期2009年09月18日2009年11月18日制造厂上海汽轮机有限公司3.2汽轮机设备规范3.2.1主要技术参数序号名称单位1/2机1型号N33016.7/538/5382型式亚临界、单轴、反动式一次中间再热,双缸双排汽、凝汽式73额定功率MW3304最大功率MW3395临界转速发电机一阶r/min867发电机二阶r/min2256高中压转子r/min1670低压转子r/min16106大轴晃动原始值mm0.037额定转速r/min30008转子旋转方向从车头向发电机方向看为顺时针9末级叶片长度mm90510通流级数结构级为37级,其中高压部分1个调节级14压力级中压部分8个压力级低压部分27个压力级。11转子结构高中压转子、低压转子均是由整体合金钢锻件加工的无中心孔转子,高中压转子为双流结构,反向布置低压转子为双流对称结构。12汽缸结构高压汽缸为双层缸,中压汽缸为单层缸,低压汽缸为三层缸。高中压汽缸为合缸结构,通流部分为反向布置低压缸采用对称双流布置。13回热系统三台高压加热器除氧器四台低压加热器3.2.2设计工况主要参数序号参数名称单位参数1主汽门前蒸汽压力MPaa16.672主汽门前蒸汽温度℃5383再热汽门前蒸汽压力MPaa3.3964再热汽门前蒸汽温度℃5385调节级蒸汽压力MPaa126背压MPa0.00497给水温度℃280.98额定功率时蒸汽流量t/h1002.5919最大蒸汽流量t/h103610循环冷却水温度℃2111循环冷却水流量t/h4035612热耗率kJ/kWh78383.2.3额定工况下各级回热抽汽参数抽汽编号抽汽点压力(MPa)温度(℃)流量(t/h)负荷去处

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