摘要
概述了大坝变形监测用真空激光准直系统中真空系统的组成及真空泵这一关键部件的选型方法。结合真空泵的技术参数,重点从真空室的极限真空度、工作真空度、真空泵有效抽速及抽气时间等方面对真空系统主要参数的计算方法进行了论述。阐述了真空管道材质的选择依据和管道壁厚的设计方法。采用上述方法对葛洲坝真空激光准直监测系统的真空系统进行了设计与工程实施,经现场测试,真空系统各项技术参数均满足设计要求。
The structure of the vacuum system and the selection basis of the vacuum pump are introduced for the vacuum laser collimator system for dam deformation monitoring. Combined with the technical parameters of the vacuum pump, the methods for calculating the main parameters of the vacuum system are described from the limiting vacuity of the vacuum chamber, working vacuity, effective pumping speed of the vacuum pump and air exhaust time. The selection basis of evacuated tube materials and the design method of pipe wall thickness are discussed. By using the above methods, the vacuum system of Gezhouba vacuum laser alignment monitoring system is designed and applied, and the field tests show that all the technical parameters of the vacuum system meet the design requirements.
出处
《水电自动化与大坝监测》
2012年第4期49-52,共4页
HYDROPOWER AUTOMATION AND DAM MONITORING
关键词
大坝安全监测
真空系统
真空度
有效抽速
抽气时间
真空泵
dam safety monitoring
vacuum system
vacuum degree
effective pumping speed
pumping time
vacuum pump
