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Question
what is the purpose of wear rings in centrifugal pumps ?
 Question Submitted By :: Mechanical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
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.
 
Is This Answer Correct ?    22 Yes 1 No
Bibhudatta Behera
 
Answer
# 2
The wear rings have three purposes to serve, 1. To decrease
the discharge fluid leak to the suction area and maintain
the pumps efficiency. 2. It acts as a bearing in a
multistage centrifugal pumping system. 3. It is economical
to replace the wear rings rather than replacing the
expensive impellers in case of any mechanical damage such
as, wear and tear due to abrassion or any other reasons.
 
Is This Answer Correct ?    22 Yes 3 No
Soman Nair
 
 
 
Answer
# 3
Wear ring is act as a boundary in a centrifugal pumps
between low pressure (Vacuum) area and high pressure area.
Its also supports impeller's load after bearing failure or
damage and save other parts of pumps
 
Is This Answer Correct ?    1 Yes 0 No
Mahesh Kumar Pachauri
 

 
 
 
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