Thank you MintJulep for your constructive suggestions.
Yes I know the FPM on the edge of the disc is high but not overwhelmingly so. Somewhere around 2500fpm.
The reason I have not provided exact specifications as most are "the fastest you can get type" Gas dynamic modeling seemed to indicate...
Thank you Orange_kun. and I agree with your comments. I am well aware of sunken costs. However I don't have an army of machinists at my disposal nor the cash to redesign a new system let alone the time. The upper target was 200 orifice opening events per second. Very possibly a stretch goal...
MintJulep
I expected that from you.
I would think a rational person would attempt an alternative solution before scraping the entire project. Perhaps you are made of money or work for a place that prints it, but I do not. As such I will attempt to look into feasible solutions before simply...
Orange_kun
Thanks for the suggestion. I thought PTFE too. I am ok with it melting some. As i said I don't need complete sealing just better then nothing which is what I have now.
As far as solenoid. The system shown about has already been designed and constructed at a fairly large cost. So at...
Thanks EdStainless. with this being an internal part to the pressure vessel it is very hard to get a good read on the runout. Right now I am close to reaching the pressures I need and that is without any sealing. Since face seals are relatively cheap and won't require a redesign it is worth it...
Thank you aldumoul I will look into contact seals.
mintJulip. Cycle at 100x per second?
And also behave. You are not showing good forum etiquette. I’m making it because I want to make it
this is a PPT image of what I was thinking but I think everyone who has responded understand the layout. I wrote PTFE as the seal but that was when I had no idea of the right technology.
The shaft is sealed on the other end with a PTFE seal from Garlock. Which is a normal shaft seal
all thanks for the guidance. MintJulep. Thanks a ton for the phrasing. I was really struggling with what to call it. 3DDave vary astute on the leakage path! Yes the two rotating holes will also provide a leak path but by area cutting the perimeter area out would significantly reduce the overall...
Thanks Greg
Shaft speed is about 1000rpm
Surface finish of the shaft does not matter. As I said above nothing is sealing against the shaft
There are millsions of shaft sealing solutions. This seal mush be on the perimeter to or edge of the 5 inch rotating disc that is pressed against the flat...
OK I'll try to keep this brief.
I have an application that is meant to diminish (not seal) leakage from a 50-100psi vessel around a 5 inch rotating disc out an orifice. So within the pressure vessel is a 1 inch rotating shaft with a 5 inch disc mounted to it. The disc at the moment is right up...
