航天模拟舱真空环境控制系统设计
关键词： 真空；真空泵；有效抽速；真空阀门
Design of space simulation chamber vacuum control system
Abstract:Space technology is in constant development with the continuous progress of human exploration in space. It promotes and encourages jumbo progress of science and technology, and produces some new disciplines, including the vacuum of space technology. The vacuum is an important working environment of spacecraft, so it plays a very important role in promoting the development of vacuum technology. In order to improve the reliability of spacecraft after liftoff, so the aerospace simulation chamber vacuum control system is studied. This subject research mainly is the establishment of a vacuum system, and using icons and icon of the fully can express the whole process of the vacuum system and each component of the link function with the selection, calculation and checking of each component. We will make the design vacuum system have the same effect with the space simulation cabin and make it can also simulate the space vacuum state in the surface environment in the final.
Keywords: vacuum; vacuum bump; effective pumping speed ;vacuum valves.
目录
摘要 i
Abstract i
目录 ii
1 绪论 1
1.1 空间真空环境模拟设备概述 2
1.1.1 中国现有的空间环境模拟设备 2
1.1.2 真空获得设备 3
2 真空室的设计与计算 4
2.1 确定真空室的技术参数 4
2.2 真空室的设计与计算 4
2.2.1 确定真空室的技术参数 4
2.2.2 真空室壳体设计 6
3 真空系统的设计计算 7
3.1 真空系统中作为已知条件的基本参数 7
3.2 主泵的设计计算 7
3.2.1 真空系统中作为已知条件的基本参数 7
3.2.2 选取主泵 8
3.2.3 验证K-800型扩散泵 8
3.3 前级真空管路的计算设计 12
3.3.1 低真空泵的选择 12
3.3.2 中直空泵的选择 12
3.4 计算抽气时间 14
4 真空系统中阀门的设计 15
4.1 低真空阀门的选择 15
4.2 高真空阀门的选择 15
4.3 真空放气阀的选择 16
5 硬件与软件设计 17
5.1 硬件设计 17
5.2 用三相异步电动机实现各个泵的运作及热继电器选择 19