On line Strainers, failure of mesh
On line Strainers, failure of mesh
(OP)
We have an online strainer element (basket type), horizontally installed, Dry Gas at inlet.
We are experiencing frequent failure of the Mesh (80 Mesh, SS 347).
Pressure drop across the strainer is satisfactory
Open Area calculation for the mesh, with respect to cross sectional area of pipe is also satisfactory.
in such a scenario What all could be the probable causes of failures?
We are experiencing frequent failure of the Mesh (80 Mesh, SS 347).
Pressure drop across the strainer is satisfactory
Open Area calculation for the mesh, with respect to cross sectional area of pipe is also satisfactory.
in such a scenario What all could be the probable causes of failures?





RE: On line Strainers, failure of mesh
RE: On line Strainers, failure of mesh
RE: On line Strainers, failure of mesh
RE: On line Strainers, failure of mesh
We repair the strainer, by installing / replacing the 100% fresh Mesh...but again within a month again the failure happens..
RE: On line Strainers, failure of mesh
I.e. is it simply supported at the top and the basket can vibrate / set up a natural frequency?
Some details of the filter and pictures of the damage would help a lot....
I'm a little confused by your terminology "On line" and "horizontal". Do you mean a top hat or witches hat between flanges filter??
Remember - More details = better answers
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RE: On line Strainers, failure of mesh
RE: On line Strainers, failure of mesh
constant airflow ? or oscillating, pulsing ??
another day in paradise, or is paradise one day closer ?
RE: On line Strainers, failure of mesh
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: On line Strainers, failure of mesh
what is the strainer supposed to catch? are what the strainer is supposed to catch able to cause such damage?
TTFN (ta ta for now)
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RE: On line Strainers, failure of mesh
Its Dry Gas which is passing through the strainer. The Mesh Element is secured to the Perforated Plate. The Assembly fixed with RTJ Flanges.
Enclosed is the details of the strainer.
We are looking for any abnormalities at the upstream of the strainer...this is in progress.
RE: On line Strainers, failure of mesh
Leaving aside the eternal argument about which way around you should point these things ( I go for inside to out, but hey) are these new / newly installed?
Has anything changed from before?
What sort of actual velocity are we looking at here?
Other than some sort of swirl meaning that flow is being sent predominantly into one part of the screen, what is the open area of the internal support screen / punched plate?
Are the holes in the punched plate smooth or jagged?
Can you attach a photo including a close up?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: On line Strainers, failure of mesh
RE: On line Strainers, failure of mesh
is D2 a solid plate ? (doesn't look like mesh)
putting the mesh in compression doesn't sound like a good idea.
has this failure started recently ?
have you done a flow study around this strainer ? maybe there's some instability in the flow field ??
another day in paradise, or is paradise one day closer ?
RE: On line Strainers, failure of mesh
D2 is the inside hole - flow is right to left (outside to in)
The 3 bar differential is rather high - iyers - what differential do you think is OK?? - "Pressure drop across the strainer is satisfactory"
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: On line Strainers, failure of mesh
if D2 is an open hole ... not much of a strainer ? if it's that open, why the pressure drop/rise ?
it'd be better to have the mesh in tension, no?
another day in paradise, or is paradise one day closer ?
RE: On line Strainers, failure of mesh
I prefer inside to out with mesh on the inside, but many other swear by the opposite.
The thing is these are only supposed to be for initial commissioning and cleaning, not a long term use, so some unanswered questions.
Actually Iyers - you are actually flowing this thing from outside to inside are you??
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: On line Strainers, failure of mesh
RE: On line Strainers, failure of mesh