Basic Mechanical Seals 密封基础知识
JC Tianjin Training
© 2001 John Crane EAA
1 1
What is a mechanical seal?
什么是机械密封？ two flat sliding surfaces, which maintain a close running clearance while separated by a fluid film
两个平滑表面中间有干净液膜隔离，保持贴合运转
rotating seal unit
stationary seal unit
2 2
Desired Features of a Seal 机械密封必须有的特征
Small axial clearance 小的轴向间隙 Self adjusting 自调节
Shaft Movement 轴的运动
Long-life 很长的寿命 Easy maintenance 容易检修 Low cost 低成本
Basic Mechanical Seal
基础机械密封
1
Loose ring set screwed to the shaft
4 4
Basic Mechanical Seal
基础机械密封
2
Wear here will create leakage
O-ring prevents leakage through the bore
reaction in the shaft5 5
Basic Mechanical Seal
基础机械密封
Heat generated here 此处生热 Leak path
3
Large component 大零件
Spring ensures automatic adjustment 弹簧确保自动调整
6 6

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。