Mô tả

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COURSE UPDATE:

We have added a quiz at the end of the course to help you test your knowledge and emphasize the key learning points. The quiz includes:

  • True/False questions

  • Multi-choice questions

  • Images, cross-sectionnal views

  • Solved problems

  • and much more...

When you think you’ve got a good grasp on a topic within the course, you can test your knowledge by taking the quiz. If you pass, wonderful ! If not, you can review the videos and notes again or ask us for help in the Q&A section.

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Dear student,

Centrifugal pumps of various designs and applications are encountered nowadays throughout refining, petrochemical and process industries as well as in power generation and environmental engineering.

This course is designed to provide you with a complete understanding of construction details and functioning of centrifugal pumps. This understanding is a prerequisite for successful operation of plant and piping system.

The course includes extensive graphics, 3D animations and cut sections to give you a virtual practical exposure on centrifugal pumps.

The objective of this course is threefold :

1. Break down for you all the centrifugal pump operating principles into easily digestible concepts like cavitation, performance curves, head, etc

2. Illustrate through 3D animations and cut-sections the main pump mechanical components like impellers, shafts, bearings, packing, mechanical seals, etc

3. Provide guidelines and best practices for operation, maintenance and troubleshooting

So with no further ado, check out the free preview videos and the curriculum and we look forward to see you in the first section.

Also remember, as enrolled student you will have unlimited access to this material and one-on-one instructor support. So feel free to interact with us by email or simply ask us for help in the Q&A section. It will be our pleasure to help you and provide assistance.

Hope to see you there

Cheers,

WR Training

Spread the wings of your knowledge

Bạn sẽ học được gì

Understand centrifugal pumps working principles for successful operation of your plant and piping systems

Understand centrifugal pumps construction details (impeller, volute, shaft, bearings, packing, mechanical seals, etc)

Lear how to read and interpret your pump curves

Learn how to determine and interpret your piping system curve

Optimize the operation efficiency of your pumping systems

Analyze the problems in operation related to packing, mechanical seals, bearings and flow control

Apply the best practices and guidelines for maintenance, problem solving and troubleshooting

Yêu cầu

  • Some engineering or field knowledge is preferable but not mandatory. All the concepts are explained in depth using an easy to understand language to allow students to build their knowledge from the ground up

Nội dung khoá học

13 sections

ABOUT THE COURSE

3 lectures
Introduction
02:24
Learning objectives
06:42
Course video sample
09:48

BASIC PUMP PRINCIPLES

4 lectures
Introduction
01:20
How do pumps work
07:02
Pressure measurement
04:42
Pump head
10:57

NET POSITIVE SUCTION HEAD - NPSH

3 lectures
Introduction
03:10
NPSH required
04:28
NPSH available
21:36

CAVITATION

9 lectures
Vapor pressure
03:05
What cavitation is all about
01:25
The effect of vapor pressure on pump performance
09:22
Vaporization cavitation
04:44
Internal re-circulation
02:27
The vane passing syndrome
01:50
Air aspiration
02:44
Turbulence cavitation
00:37
Preventing cavitation
08:37

THE AFFINITY LAWS

1 lectures
The affinity laws explained
11:56

USEFUL WORK AND PUMP EFFICIENCY

3 lectures
Useful work from a pump
04:19
Flow determination
01:54
Pump efficiency
06:20

PUMP CLASSIFICATION

11 lectures
Introduction
00:54
Positive displacement pumps
03:27
Centrifugal pumps
02:37
Conceptual difference between centrifugal and positive displacement pumps
01:55
Centrifugal volute pumps
01:44
Types of centrifugal pumps
10:41
Pump impellers 1/2
02:45
Suction specific speed, Nss
09:33
Pump impellers 2/2
03:08
Wear bands
03:03
Specific speed, Ns
04:05

UNDERSTANDING PUMP CURVES

8 lectures
Pump performance curves
02:15
Head vs Pressure (reminder)
02:00
The Head-Capacity curve (H-Q curve)
03:44
The efficiency curve
00:58
The energy curve (BHp curve)
00:41
The pump minimum requirement curve (NPSHr curve)
01:01
Overview of the 4 curves
06:44
Pump family curves
06:29

UNDERSTANDING THE SYSTEM CURVE

10 lectures
Total dynamic head, TDH
08:14
Determining the static head, Hs
00:42
Determining the pressure head, Hp
01:04
Determining the friction head (Hf) and the velocity head (Hv)
02:35
The Hazen and Williams formula
01:15
The Darcy and Weisbach formula
02:48
The practical formula
26:41
The dynamic system
03:53
Dynamic pressure
03:48
Resistance changes
07:53

SHAFT DEFLECTION

7 lectures
Introduction
01:06
60° and 240° radial loads
05:19
Operation, design and maintenance
05:20
Tight tolerances in centrifugal pumps
01:10
Signs of shaft deflection : Interpreting the evidence
06:49
The sweet zone
00:54
The dual volute pump
01:48

BEARINGS

5 lectures
What is a bearing ?
07:33
Bearing lubrication
08:06
Bearing failure
08:30
Bearing maintenance
10:18
Bearing seals
08:02

SHAFT PACKING

3 lectures
What packing is all about
06:06
Packing leakage
02:20
Stages in the life of packing
02:42

MECHANICAL SEALS

16 lectures
Introduction
03:58
The mechanical seal
01:59
The single UNbalanced INside mounted mechanical seal
01:06
The single UNbalanced OUTside mounted mechanical seal
01:12
The single balanced INternal mechanical seal
01:05
The single balanced EXternal mechanical seal
00:51
O-rings
02:02
The balance effect : advantages and mathematical explanation
06:22
The cartridge mechanical seal
00:36
Double seals
01:27
The tandem dual seal
02:24
The back to back double seal
00:56
The face to face double seal
01:00
Support system for dual seals
03:54
Test your knowledge
22 questions
Bonus
01:10

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