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1)  deairing system sealing
真空系统密封性能
2)  vacuum system tightness
真空系统严密性
1.
Principles for direct impacts of vacuum system tightness of steam turbine on condenser pressure,condensate supercooling and oxygen content as well as the influence on the safe operation and economic effect of steam turbine are analyzed,and the importance of tightness of vacuum system is pointed out.
分析了汽轮机组的真空系统严密性直接影响到凝汽器压力、凝结水过冷度、含氧量的机理,以及对汽轮机组安全运行和经济性的影响,指出了真空系统严密性的重要性。
3)  vacuum leakproofness
真空密封性
4)  vaccume property of system
系统真空性能
5)  vacuum system tightness test
真空系统严密性试验
1.
To counter the problem that there is not a good method to directly measure the quantity of air leaked into the vacuum system of steam turbine, it is proposed in this paper the soft-sensing technique for the measure of air leakage into vacuum system based on vacuum system tightness test of steam turbine and combined with BP neural networks.
针对目前汽轮机真空系统漏气量的直接测量一直没有好的方法的问题,文中提出一种基于真空系统严密性试验,并结合BP网络的漏入真空系统空气量的软测量方法。
6)  vacuum seal
真空密封
1.
The former dynamic seal was instead by gasket type seal at the end of flange,so the friction force caused by O-ring rubber seal was reduced,the capability of vacuum seal was im.
介绍了一种激光核聚变中冲击波观测镜真空密封结构的改进设计,并论述了O形圈的选取以及密封槽的设计方法。
补充资料:真空系统
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性质:由各种真空元件(包括被抽容器、真空泵、阀门、管路及真空检测仪表等)组合而成,用以获得一定的真空度并满足特定工艺要求的装置叫做真空系统。按工作真空度高低的不同,真空系统可分为低、高、超高、极高真空系统;按被抽容器有无放气或漏气现象,真空系统可分为动态和静态真空系统;按系统内有无碳氢化合物的污染,真空系统又可分为洁净真空与污染真空系统。化工用真空系统多属于中、低真空范围,且都是污染的动态真空系统。

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