1) single-ring type sealing oil system
单流环式密封油系统
1.
The paper introduces loops and equipments of the single-ring type sealing oil system in the QFR-400-2-20 type generator,and it also introduces the parameter monitoring in normal operation and the method of disposition in abnormal operation.
文章介绍了QFR-400-2-20型发电机单流环式密封油系统的原理、主要设备、正常运行时的参数控制和运行要求,以及出现异常时的对策,对相关人员熟悉掌握单流环式密封油系统有一定的意义。
2) single-flow seal oil
单流环密封油系统
1.
By comparison double -flow seal oil with single-flow seal oil, it is pointed out that the main reas on leading hydrogen purity dropping is that the content of air in hydrogen-side seal oil is on the high side.
氢冷发电机组氢气污染问题严重影响着机组安全运行 ,从发电机组密封油系统的类型角度 ,通过对双流环、单流环密封油系统进行对比分析 ,提出影响氢气纯度下降的主要原因是氢侧密封油空气含量偏高 ,就如何解决问题提出了 3套治理方案。
4) single-flow sealing structure
单流环密封
1.
By comparing the 2 sealing structures,it is found that the single-flow sealing structure has advantages of more simple construction,higher safety and reliable operation performance,and with oil/water separation device,while the double-flow sealing structure is featured by complicated construction,but facile operation.
介绍了国内1000MW核电站氢冷发电机使用的2种密封油系统的功能、结构和特点,并进行综合分析比较,指出单流环密封结构简单,又具有油、水分离装置,运行安全可靠;双流环密封结构复杂,但运行比较灵活。
5) oil sealing system
密封油系统
1.
Effect of 200 MW generator rotor journal abrasion on oil sealing system and its handling
200MW发电机转子轴颈磨损对密封油系统的影响及处理方法
2.
High maintenance costs are generally required by oil sealing systems of conventional turbine generator units,because too many rotary equipment are included,which are easy to make operation unreliable.
分析了汽轮发电机传统的密封油系统转动设备多,运行不可靠,检修维护费用高的原因;提出了一种新的密封油供油方式,实行空、氢侧联合运行。
3.
Based on working principle of the oil sealing system for generators,the troubles occurred in debugging and operation of the unit have been analysed,summarizing the causes leading to oil-enering into the large-capacity generator,and methods and measures for preventing the oil-entering trouble being put forward.
根据发电机密封油系统的工作原理,对机组调试和运行中出现的发电机进油事故进行了分析,总结了大型发电机进油的原因,提出了防止措施。
6) sealing oil system
密封油系统
1.
Generator sealing oil system is designed to prevent outer air from entering the generator and avoid leakage of hydrogen from the generator.
发电机密封油系统的作用是为了防止外界空气进入发电机内部及阻止发电机内氢气漏出。
2.
Traditional differential-pressure regulator and pressure-equalizer regulator are mechanically driven in sealing oil system of hydrogen-cooled turbine generators.
针对目前氢冷汽轮发电机双流环式密封油系统中普遍采用的机械液压式压差阀、平衡阀存在的不足之处进行了分析,并提出了具体的解决方案。
3.
Based on analysis of fault of the turbine generator sealing oil system,the application of Bayesian theory in fault diagnosis was researched,the mathematics equation to solve the problem of fault diagnosis was given.
在分析汽轮发电机密封油系统故障特点的基础上,提出了用贝叶斯理论进行故障诊断的方法,给出了求解故障诊断的数学表达式,充分利用样本的先验信息,建立了贝叶斯网络的推理方法,结合Leaky Noisy-OR模型来降低数据需求量,提高了诊断速度和效率。
补充资料：密封油系统
密封油系统
sealing oil system
m一fengyoux一tong密封油系统(sealing 011 system)向氢冷发电机转轴与端盖交接处的密封瓦循环供应高于氢压的润滑油以防止氢气外泄的所有设备和装置的组合。过去对容量较小的氢冷发电机采用适合中、低氢压的盘式瓦密封装置。机组容量增大和氢压增高后，则普遍采用环式密封瓦结构，密封瓦浮在与轴之间的油膜上，以达到气密的效果，目前存在单流、双流和三流三种环式密封瓦及其相应的密封油系统。 单流环式密封油系统采用该系统的发电机密封瓦只有一个进油孔。密封油进人瓦后再分成氢气侧和空气侧两路，其回油分别去氢气侧和空气侧油分离器(见图l)。为净化密封油，系统中设置了密封油真空箱，正常运行压力为负压，其作用是使油中水分逸出。系统一般设置两台主密封油泵，一台运行，一台备用;还设有直流事故电动密封油泵以及再循环泵，再循环泵用于密封油真空箱内的油自行循环，以使油中水分 汽粕们门匆油来 ┌─────────────┐ │~~一 │ └─────────────┘ ┌──────────────┐ │一伫咬几口 │ ├────────────┬─┤ │‘.‘J.，‘，‘，略喇知 │卜│ └────────────┤ │ ┌─────────────┼─┘ │甘.目.翎‘41 │ └─────────────┘ ┌───┐ │允黔丈│ └───┘ 图1单流环式密封油系统简图1一发电机;2一密封瓦;3一氮侧油分离器;4一空侧油分离器;5一浮球阀油筒;6一密封油真空箱;7一奉故密封油泵;8一再循环油泵;9一主密封油泵;10一密封油 真空泵;11一冷油器;12一油、氢压差调节阀1台直流电动油泵，正常时仅1台交流油泵运行，其他两台油泵处于备用。空气侧压差调节阀控制空气侧油压与发电机内氢压的压差(约50kPa)，以保证油压大于氢压;氢气侧密封油由氢气侧密封油泵向发电机密封瓦供油，并设有压差调节阀保证氢气侧密封油压高于空气侧密封油压(约10kPa);真空侧密封油压与氢气侧密封油压相同。真空侧密封油来自真空侧油箱，该油箱也有排烟机，使其处于微真空。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条