Calculation and Selection of Centrifugal Pumps
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Calculation and Selection of Centrifugal Pumps Course
Introduction:
Centrifugal pumps are widely employed in the oil and gas industry and are considered the most prevalent type of pumps used. The flow of liquid through these pumps is regulated by discharge flow control valves.
In contemporary times, centrifugal pumps can be found in diverse designs and applications across industries such as refining, petrochemical, process, power generation, and environmental engineering. Their versatility makes them a crucial component in these sectors.
Course Objectives:
At the end of the Calculation and Selection of Centrifugal Pumps course, you will be able to:
- Identify different types of pumps, including centrifugal and positive displacement pumps
- Recognize the advantages and the limitations of each type of pump
- Calculate the flow of liquid through piping systems
- Break down for you all the centrifugal pump operating principles into easily digestible concepts like cavitation, performance curves, head, etc
- Illustrate through 3D animations and cut-sections the main pump mechanical components like impellers, shafts, bearings, packing, mechanical seals, etc
- Provide guidelines and best practices for operation, maintenance and troubleshooting
Who Should Attend?
Calculation and Selection of Centrifugal Pumps training course is ideal for :
- Petroleum, Chemical, Process and Mechanical Engineers
- Production Engineers and Technologists
- Operation, technical service and maintenance professionals
- Consultants, Project managers and Sales professionals
- Technical professionals responsible for piping system inspection
- Technical professionals responsible for interdisciplinary energy projects
Course Outlines:
Introduction to Calculation and Selection of Centrifugal Pumps
- Properties of Liquids, Pressure, Flow, energy, and Head
- Different Pump Types
- Pressure measurement
- Pump head
Basic Pump Principles
- Pump and System
- Pump and System curves
- Hydraulic gradient
- How do pumps work
- USEFUL WORK AND PUMP EFFICIENCY
- Useful work from a pump
- Flow determination
- Pump efficiency
PUMP CLASSIFICATION
- Positive displacement pumps
- Centrifugal pumps
- Conceptual difference between centrifugal and positive displacement pumps
- Centrifugal volute pumps
- Types of centrifugal pumps
- Pump impellers 1/2
- Suction specific speed, Nss
- Pump impellers 2/2
- Wear bands
- Specific speed, Ns
UNDERSTANDING PUMP CURVES
- Pump performance curves
- Head vs Pressure (reminder)
- The Head-Capacity curve (H-Q curve)
- The efficiency curve
- The energy curve (BHp curve)
- The pump minimum requirement curve (NPSHr curve)
- Overview of the 4 curves
- Pump family curves
UNDERSTANDING THE SYSTEM CURVE
- Total dynamic head, TDH
- Determining the static head, Hs
- Determining the pressure head, Hp
- Determining the friction head (Hf) and the velocity head (Hv)
- The Hazen and Williams formula
- The Darcy and Weisbach formula
- The Bachus and Custodio formula
- The dynamic system
- Dynamic pressure
- Resistance changes
NET POSITIVE SUCTION HEAD - NPSH
- Introduction
- NPSH required
- NPSH available
CAVITATION
- Vapor pressure
- What cavitation is all about
- The effect of vapor pressure on pump performance
- Vaporization cavitation
- Internal re-circulation
- The vane passing syndrome
- Air aspiration
- Turbulence cavitation
- Preventing cavitation
BEARINGS
- What is a bearing ?
- Bearing lubrication
- Bearing failure
- Bearing maintenance
- Bearing seals