fluid seal using multiple grooves... what is it called?
fluid seal using multiple grooves... what is it called?
(OP)
trying to remember the name of the fluid seal that has multiple grooves... you put the grooves say on the outside of a tube and that tube slips inside another tube... then the fluid starts flowing and I guess it makes eddys in the grooves that essentially stop the fluid from leaking between the tubes... I guess thats how it works... but cant remember the name... also I am wondering if there is any source to aid in design in such parts?
thanks
thanks





RE: fluid seal using multiple grooves... what is it called?
RE: fluid seal using multiple grooves... what is it called?
RE: fluid seal using multiple grooves... what is it called?
RE: fluid seal using multiple grooves... what is it called?
RE: fluid seal using multiple grooves... what is it called?
Just a minor technical point, but most labyrinth seals don't actually "stop" leakage, they just tend to minimize leakage. Labyrinth seals commonly rely on a pressure differential across the seal to discourage the fluid from migrating past the labyrinth gaps. This normally works OK until the device is shut down. At that point, the liquid (or gas) that is being sealed will weep past the labyrinth seal.
Regards,
Terry
RE: fluid seal using multiple grooves... what is it called?
I've seen this used many tims on the spindle of horizontal milling machines (so a vertical setup of the seal).
It works very good when rotating, but when standing still (and even with the pressure diff.) it leaks. Minimal, but enough to make a mess. Every monday morning you can start by cleaning up the machine.
I wouldn't know how to design one, they're "off the shelf" products as far as I know.
RE: fluid seal using multiple grooves... what is it called?
RE: fluid seal using multiple grooves... what is it called?
http://ww
RE: fluid seal using multiple grooves... what is it called?
links, one from 2003
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http://www.eng-tips.com/viewthread.cfm?qid=80034