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what is the purpose of wear rings in centrifugal pumps ?
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Answer Posted / bibhudatta behera
Wear rings can be defined as a device used to seal the
pressure leakage of the liquid between the inlet of the
impeller and the pump casing. Wear rings are typically
found on pumps with closed impellers. A similar device that
serves the same function called a wear plate can be found
on some pumps with a semi-open impeller.
The typical reason for using a wear ring is to decrease the
amount of leakage loss around the impeller. Due to more
work available to push the pumped liquid out the discharge
there is a slight improvement in pump efficiency.
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Dear Sir, I am Shariq Sami. I joined BHEL as a Supervisor Trainee in May 2009 on diploma basis, right now i am an assistant Engineer and posted at Noida. I have completed my bachelor of engineering from Jamia Millia Islami, New Delhi.I am Planning to appear for "BHEL ET" exam this year. I want to know,is there any previous year question papers will be available like we have for GATE exams or you feel it is no need? Can you please guide me? Kind Ragards M.S Sami, Contact No. 9891090742, 9250250988, 0120-2545796
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