【填空题】
56.1号机主、再蒸汽温度偏离正常值时,应调节___水量、烟道___使汽温回至正常值,同时应注意煤量、___及___的配比。
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【填空题】
57.1号机主蒸汽额定压力___MPa,最大值不超过___MPa;
【填空题】
58.1号机运行中冷再热蒸汽额定压力___MPa,再热蒸汽压力升高时应迅速恢复,同时注意重点监视___、___变化。
【填空题】
59.主、再热蒸汽温度超过___℃时延时15分钟应故障停机。
【填空题】
60. 机械超速和电超速试验应分别试验___,动作转速差值不应>___。
【填空题】
61. 滑停过程中主汽温度下降速度不大于___℃/min。
【填空题】
62. 汽机处于静止状态,严禁向___供汽。
【填空题】
63.汽温异常时,应加强对机组振动、___、___、推力轴承金属温度的监视。
【填空题】
64.汽轮机水冲击现象:CRT显示汽轮机上下缸温差大于___℃。高、中压主汽门,高、中压调门或任一抽汽电动门、抽汽逆止门的___冒白汽。蒸汽或抽汽管道发生___或产生___。轴向位移、推力轴承金属温度及推力轴承___急剧升高,汽缸及转子___突然下降,胀差向___发展。 机组___异常并伴有金属___或撞击声,振动___。
【填空题】
65.汽轮机水冲击原因有汽水分离器___。 主、再热蒸汽___调整不当。机组负荷急剧___,主、再热蒸汽温度急剧___。本体___不良。蒸汽管道___不畅。 除氧器或高、低加___。轴封蒸汽___调整不良,轴封带水。煤水比___不当。
【填空题】
66.汽轮机组启动、运行、停机过程中严格控制___、___升降速率,保证蒸汽的___。
【填空题】
67.汽轮机停机后,要隔绝一切可能返水返汽的来源,如___、高低旁路___、轴封___、各段抽汽逆止门、电动门和凝汽器补水门应___。凝结水补水泵应改为___控制。
【填空题】
68.电超速试验前必须进行“电超速”保护的___试验合格。
【填空题】
69.高加突然解列后,会造成给水温度大幅___,致使主蒸汽___和___大幅变化,对机组造成___;另外高加解列后高中压缸内通过的蒸汽流量上升较大,会造成___
【填空题】
70.1号机挂闸时应检查主机___油泵及___油泵运行正常。
【填空题】
71.1号机冲转时转速升至___rpm 时顶轴油泵联停,将顶轴油泵投___。
【填空题】
72.1号机润滑油压低至___Mpa时联启交流润滑油泵,___Mpa时联启直流润滑油泵,汽轮机跳闸,___Mpa跳盘车。
【填空题】
73.1号机正常运行润滑油压应在___ Mpa, 主油箱油位保持___mm。
【填空题】
74.1号机冷油器出口油温维持___℃,轴承回油温度正常应小于___℃。
【填空题】
75.1号机隔膜阀自动停机油压应大于___MPa,当下降到___ MPa时,隔膜阀将开启。
【填空题】
76.1号机EH油高压蓄能器氮气压力___Mpa,低压蓄能器氮气压力___MPa。
【填空题】
77.1号机低压缸排汽温度小于___℃,凝汽器真空当低于___kPa 时报警,低于___kPa 时跳闸
【填空题】
78.1号机停机前应当分别进行主机___油泵、主机___油泵、___油泵、___油泵、、___电机试转。
【填空题】
79.1号机打闸以后,主汽门、___、___关闭,___开启。
【填空题】
80.1号机打闸以后转速降至___r/min 时,启顶轴油泵。
【填空题】
81. 汽轮机上下缸温差超过规定值时,___汽轮机启动。
【填空题】
82.1号机#5低加内漏加热器汽侧水位___、端差___、出口水温___,严重时听到加热器内部有___。
【填空题】
83.1号机停机后盘车期间,应维持___油温,定时听音,监视___油压,___温度、大轴___、盘车___、汽缸上下___正常。
【填空题】
84.1号机停机后因盘车电机故障造成不能电动盘车时,应查明原因尽快消除,手动每隔___min盘车180。
【填空题】
85.1号机停机后如果由于其它原因造成盘不动时,禁止用___手段强行盘车,应进行___,并监视上下缸温差。
【填空题】
86.1号机停机后当低压缸排汽温度低于___℃,方可停止凝结水泵运行。确认___后可停止闭冷水泵、开式水泵、循环水泵运行。
【填空题】
87.1号机停机后,应可靠隔离与机组热力系统相联系的其它___系统,防止汽缸进___。
【填空题】
88.1号机停机后应监视各___、___、___水位正常。
【填空题】
89.1号机停机后定时记录汽缸膨胀、___、高、中压缸___、转子___、盘车___、润滑___、___、顶轴___,顶轴油泵___,测听转子___,直至缸温降至150℃。
【填空题】
90.机组长期停运时,设备应放尽设备内部___及系统内___,做好___措施,冬季停运应做好___措施。
【填空题】
91.机组进行定期工作前,应确认机组无影响切换___的操作。
【填空题】
92.机组停运后,发电机内的氢气被二氧化碳___合格且___停止后,方可停止密封油系统运行。
【填空题】
93.1号机组跳闸后,应迅速将轴封供汽倒为___供汽,及时调整轴封供汽压力。真空到零,停用___,解列___。
【填空题】
94. 若循环水泵在出口门全开的情况下停运,系统内的水会倒流入泵内,引起水泵___。
【填空题】
95.汽轮机断叶片现象:汽轮机内部有明显的___,机组___增大,某监视段___异常,___,推力轴承___异常变化。
【填空题】
96.汽轮机断叶片原因:制造、安装___不良, 操作不当造成设备___,机组___过于频繁,叶片多次受交变___作用, 机组长期___运行, 汽轮机___或___长时间偏离正常值造成叶片疲劳。
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