Air In Leakage
Air In Leakage
(OP)
I noticed that while condenser vacuum is normal, my air in leakage detector is indicating 12-15 SCFM of in-leakage. This is roughly three times higher than normal.
All the routine checks for the source have turned up negative.
What I'd like to know is, whats the best way to look for air in-leakage? I've tried ultrasonic sensors. The results were ambiguous at best.
Thanks in advance
All the routine checks for the source have turned up negative.
What I'd like to know is, whats the best way to look for air in-leakage? I've tried ultrasonic sensors. The results were ambiguous at best.
Thanks in advance





RE: Air In Leakage
We tried to use a couple of methods in tandem -- 1) used a small plastic squeeze bottle full of condensate and squirted valve packing, etc. to see if the condensate was sucked into the system.
2) used a helium leak detector (replacing the halogen leak detector) and then released minute quatities of helium near those areas prone to air-inleakage -- use of the helium had to be miserly in that it easily overloaded the detector and it took a while for the leak detector to return to "normal" it usually takes two people who are diligent and not in a rush...
RE: Air In Leakage
The other way leaks were detected, is by the signals of dirt at the leaks area. Our steam is not clean but always have some traces of H2S or others, and where the air is leaking in the steam and gases are snikking out and after few days or weeks leaving footstep at the leaking area.
RE: Air In Leakage
There is an old fashioned way of detecting leaks in vacuum systems. Find you a smoker (the kind that bee keepers use) and use the bellows to pump small amounts of smoke around your seams, valve packing, pipe flanges etc. I have seen this method work successfully in many powerplants for finding various sizes of vacuum leaks.
Romefu12
RE: Air In Leakage
RE: Air In Leakage
typically, you should be able to ignore those items that weren't worked on... best of wishes...