pumps ppt

1. • What is a vertical turbine pump?
A specialized centrifugal pumps designed to move
water from a well or reservoir that is deep
underground. Also known a deep well turbine pump or
a line shaft turbine pump, it is one of two main types
of turbine pumps.
The two main types of turbine pumps are vertical
turbine pumps and submersible turbine pumps.
While submersible pumps have the electric motor
located underwater at the bottom of the pump,
vertical turbine pumps have the motor located above
ground, connected via a long vertical shaft to impellers
at the bottom of the pump

3. • BREAKDOWNS:
All the three pumps are having
high vibration even after the
commissioning.
• CAUSES:
 Impeller unbalancing.
 Bending of shafts.
 Distortion of sole plate.
 Motor unbalanced.
 Frequent displacement of shaft
sleeves.
 Frequent damaging of spider
bushes.
Cont…

4.  Misalignment in bores of bowl
assembly.
 Frequent damage of ball bushes due to
in adequate supply of cooling water.
 Displacement of header due to
improper support.
• REMEDIES:
 Done the balancing of impeller.
 Removing the bending & run out of the
shafts by manual jacking system.
 Rectifying the foundation & machining
the sole plate for removing its
distortion.
 Setting the magnetic center and
replacing the drive & non drive end
bearings of the motor.
Cont…
SHAFT RUN OUT CHECKING

5. Clearance between bearing
Sleeve and Bush Bearing:-
Sleeve Outer
Diameter(MM)
Thordon Bush Inside
Diameter(MM)
Clearance(MM)
Head shaft 75.25 74.75 0.50
Line Shaft#1 75.20 74.57 0.63
Line Shaft#2 75.22 74.62 0.60
Line Shaft#3 75.23 74.47 0.76
Line Shaft#4 75.49 74.72 0.77
Line Shaft#5 75.22 74.42 0.80
Line Shaft#6
75.53 74.86 0.67
Line Shaft#7
75.56 74.71 0.85

6. BEFORE
AFTER
HEADER SUUPORT

7. Impeller was jamming due to slightly sludge
Deposited on impeller wear ring same was cleaning
done.