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HIGH PRESSURE PUMP INTRODUCTION

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by

hyuncheol oh

on 6 October 2015

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Transcript of HIGH PRESSURE PUMP INTRODUCTION

CAPACITY
HEAD
RPM
MOTOR RATED POWER
SPECIFIC GRAVITY
BREAK HORSE POWER
OPERATION POINT
OPERATION POINT
Capacity x Head x S.G
BHP(SHAFT POWER): ___________________

367.2 x Efficiency

ex) 457 x1750 x 0.8973 / (36.7.2 x 0.76) = 2571.4kW
PERFORMANCE CURVE
PUMP DEFINITION
A device used to move and pressurize fluids such as liquids or slurry.
PUMP CLASSIFICATION
According to the method they use to move the fluid
Positive Displacement Pumps
One cycle or revolution of the pump to pass a fixed quantity or volume of fluid through the pump
Kinetic Pumps
Pressure Energy + Kinetic Energy + Potential Energy = Constant
Bernoulli Theorem
Converting Kinetic energy to Potential energy
POSITIVE DISPLACEMENT PUMPS
STRUCTURE OF CENTRIFUGAL PUMPS
Impeller
Shaft
Casing
Suction Nozzle
Discharge Nozzle
Mechanical Seal / packing
Bearing Housing
Motor (Turbine)
Coupling
HIGH PRESSURE PUMP INTRODUCTION
CENTRIFUGAL PUMPS CLASSIFICATION
RECIPROCATING PUMPS
OVERHUNG PUMPS
KINETIC PUMPS
REGENERATIVE PUMPS
CENTRIFUGAL PUMPS : The most widely used process pump
REGENERATIVE PUMPS
SPECIAL PUMPS
CENTRIFUGAL PUMPS
WATER JET PUMPS
SCREW CENTRIFUGAL PUMPS
ROTARY PUMPS
API 610
A
merican
P
etroleum
I
nstitute
OH
Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries
BB
vs
API 610
API STANDARD
O
VER
H
UNG
B
ETWEEN
B
EARING
V
ERTICALLY
S
USPENDED
TECHNICAL TERM
Head(H) : A measure of pressure
Net Positive Suction Head (NPSH)
NPSH Available (NPSHa): The absolute pressure at the suction port of the pump
NPSH Required (NPSHr): The pressure dropped at the suction port of the pump
NPSHa > NPSHr +0.5m (API610)

NPHS is the most important factor to prevent a pump from caviation.
Flow(Q) : Volume of liquid pumped within a given period of time
Q(m3/s) = A(m2) x V(m/s)
Suction Head : What happens before the water arrives in the pump
Discharge Head : What happens after the pump
Total Differential Head : Discharge Head - Suction Head
→ Important factor for pump selection
Ha = atmospheric pressure
Hv = vapor pressure
Hf = friction loss
Hs = Vertical distance
OH1
OH2
OH3
BETWEEN BEARING PUMPS
BB1
Foot mounted single stage
Center line mounted single stage
Vertical in line single stage
BB3
BB5
Axially split 1 and 2 stage
Axially split multistage
Double-casing radially split multistage
VERTICAL SUSPENDED PUMPS
VS1
VS6
Wet pit single casing diffuser
Double casing diffuser
VS4
Single casing volute line shaft driven sump pumps
HIGH PRESSURE PUMPS
Single casing axially split
Double casing radially split
Double casing axially split
Single casing radially split
Classified by pressure.
150kg/cm2
250kg/cm2
350kg/cm2
RADIAL SPLIT VS ACIAL SPILT
RADIAL SPLIT
PRICE & WEIGHT(SIZE)
MAINTENANCE
AXIAL SPLIT
SECTIONAL DRAWING
THRUST FORCE
Thrust Force = P x
A
x
Number of stage
BOILER FEEDWATER PUMP
BFP(Turbine or Motor)
BALANCE DEVICE
SELF BALANCE
BALANCE DISK TYPE
MATERIAL
OUTER CASING : CARBON STEAL
OTHERS :
13% CR-ST (ASTM A743CA6NM)
BALANCE DEVICE : 26~28% CR-ST
HIGH TEMPERATURE & HIGH PRESSURE
OXIDE FILM
TROUBLE SHOOTING
CAVITATION
NOISE, VIBRATION & EROSION
용적형 펌프
BFP(M)
BFPT
GOOD
BAD
PRICE & WEIGHT(SIZE)
MAINTENANCE
GOOD
BAD
Full transcript