Groove worn on wear ring surface at the eye of each impeller stage?
Groove worn on wear ring surface at the eye of each impeller stage?
(OP)
Experts,
I came acorss a pump with a radial groove worn on the eye-side wear ring surface at the eye of each impeller? The goove goes the whole way around the impeller.
I have seen this as a result of pumping abbrasive liquids, but never so pronouced. The groove almost looks like it was machined into the wear ring, and it almost goes the whole way through the wear ring. This happened on every wear ring. I have never seen this before and I'm stumped.
Hot Produced Water: ~180-190F.
Diffuser-Style Pump
Thoughts?
I came acorss a pump with a radial groove worn on the eye-side wear ring surface at the eye of each impeller? The goove goes the whole way around the impeller.
I have seen this as a result of pumping abbrasive liquids, but never so pronouced. The groove almost looks like it was machined into the wear ring, and it almost goes the whole way through the wear ring. This happened on every wear ring. I have never seen this before and I'm stumped.
Hot Produced Water: ~180-190F.
Diffuser-Style Pump
Thoughts?





RE: Groove worn on wear ring surface at the eye of each impeller stage?
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Groove worn on wear ring surface at the eye of each impeller stage?
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Groove worn on wear ring surface at the eye of each impeller stage?
Independent events are seldomly independent.
RE: Groove worn on wear ring surface at the eye of each impeller stage?
How many stages?
Do all the impellers face the same direction?
Is the damage on the stationary ring?
Are there very heavy, very abrasive particles present?
Johnny Pellin
RE: Groove worn on wear ring surface at the eye of each impeller stage?
Independent events are seldomly independent.
RE: Groove worn on wear ring surface at the eye of each impeller stage?
http://files.engineering.com/getfile.aspx?folder=f...
Note that by "wear ring" I meant "wear ring surface." These have "integral" wear rings.
Thanks,
Theron
RE: Groove worn on wear ring surface at the eye of each impeller stage?
Johnny Pellin
RE: Groove worn on wear ring surface at the eye of each impeller stage?
Maybe it was designed that way.
Have you thought about contacting the supplier / manufacture?
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Groove worn on wear ring surface at the eye of each impeller stage?
Yes, andI'm told by the MFG that it was not designed this way, and that this was the result of sand passing through the pump. How could sand cause this and only minimally wear everything else?
RE: Groove worn on wear ring surface at the eye of each impeller stage?
Johnny Pellin
RE: Groove worn on wear ring surface at the eye of each impeller stage?
RE: Groove worn on wear ring surface at the eye of each impeller stage?
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)