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Introduction

Pumps and compressors find extensive use in petrochemical process plants, water circulation systems, A/C and heating systems, and many other applications.

Keeping these machines running with least troubles and shutdown decreases the downtime of the whole system. Right machine selection appropriate to the right application, right machine operation, effective maintenance programs, reliable monitoring system, and skilled personnel capable of doing the right trouble shooting are essential requirements for prolong machine life. All the above can be achieved via deeper understanding of the machines construction and tolerances, the limits and constrains on their operation, and the more effective controlling methods.

This course will offer the opportunity to learn more about pumps and compressors, their design, construction, operation, performance curves, control and troubleshooting and maintenance. During the course participant’s discussion, comments, bringing up their own problems are welcomed and encouraged. Short tests on the course material will be performed to examine the degree of delivering the right and quality of the presented material.

Objective

Upon successful completion of this course, the delegates will be able to:

• Explain the basics of Pumps and Compressors
• Describe how the performance curves of Pumps and Compressors are measured and calculated
• Use the similarity laws to calculate the Pumps/Compressors performance at different speed and rotor size
• Perform troubleshooting and maintaining Pumps/ Compressors
• Describe the importance of the related international codes and standards

Audience

Supervisors, Engineers & Facility/Utility engineers, Technicians, Operating Personnel or anyone require a working level knowledge of pumps & compressors.

Content

Chapter I

Pumps Types and Performance

• Types of Pumps

1. Centrifugal
2. Displacement

• Pumping methods

1. Centrifugal action
2. Displacement action
3. Rotary displacement pumps

• Pumps performance curves

1. Head-Capacity curve
2. Power-Capacity curve
3. Efficiency-Capacity curve
4. NPSH-Capacity curve
5. Limits of operation
6. Characteristics curves for different types of pumps
7. How to obtain these curves experimentally
8. How to calculate these characteristic curves

• Specific speed and specific diameter

1. The significant of the Specific Speed and the Specific Diameter
2. How to calculate these numbers
3. How to use these number in pumps selection process

• Parameters affecting the pump performance
• Similarity Laws

1. The effect speed variation
2. The effect of impeller trimming

Chapter II

Pumps Operation

• Operating conditions

1. Pump curve against Piping system curve
2. System curve calculation
3. NPSH available and required
4. Suction system configurations
5. NPSH measurement

• Design operating conditions

1. Normal operating range
2. Best operating condition
3. Range of pumps operation
4. The minimum flow rate limit
5. The maximum capacity limit

• Off-design operation

1. Pre-rotation
2. Re-circulation
3. Transient operation
4. Pump surge

• Parameters affecting pump operation
• Basic requirements for trouble-free operation

1. Cavitation
2. Minimum flow rate

• Operation difficulties

1. NPSH available
2. Air leakage
3. System working pressure
4. Reduced flow
5. Parallel operation

Chapter III

Pumps selection

• Pumps standards

1. Hydraulic Institute Standard
2. API standard
3. How to use standards for pumps selection
4. How standards differ from each other
5. How to use standards to write the right  specification for pumps

• Overall procedure in selecting a pump
• Parameters affecting the pump selections

1. Properties of liquids being pumped
2. Material selection
3. Manufacturer data and curves
4. Economic consideration
5. Pumps application
6. Comparison between different types
7. Essential data required

Chapter IV

Positive Displacement Compressors

• Compression Methods

1. Intermittent compression
2. Reciprocating and Rotary  compressors
3. Continuous compression
4. Axial and Centrifugals
5. Features and comparison

• Types of Reciprocating Compressors

1. Trunk type
2. Crosshead type
3. Lubricated & non-lubricated
4. Single & Double acting

• Compression cycle

1. Internal compression
2. Clearance volume
3. Intercooling effect
4. Volume ratio
5. Pressure ratio

• Capacity control

1. Clearance pockets
2. External bottles
3. Valve unloader
4. Bypass port

• Pulsation control
• Rotary Compressors

1. Screw compressors
2. Sliding vane compressors

Chapter V

Centrifugal Compressors

• Basic Components

1. Rotating elements
2. Stationary parts
3. Compressor seals

• Centrifugal classification
• Centrifugal arrangement
• Performance curves

1. How to read performance curves
2. Surge line and stone line
3. Blade curving angle effect
4. Volume ratio effects
5. Quadrant curve

• Fan Laws

1. The effect of speed variation
2. The effect of trimming the rotor
3. Limit on the speed
4. Multistage
5. Intercooling effect

• Operation of centrifugal Compressors

1. System Characteristics
2. Volume ratio effect
3. Effect of MW variation
4. Inlet Pressure and Temperature effects
5. Effect of Rotational speed

• Compressor Control

1. Motor driven compressors
2. Turbine Driven Compressors
3. Automatic control system
4. Pressure control
5. Flow control
6. Parallel flow

• Compressor Surge

1. What causes surge
2.  Surge control

Chapter VI

Troubleshooting & Maintenance

• Principles of troubleshooting

1. Principles
2. Failure modes
3. Statistics of more frequent troubles

• Maintenance

1. Maintenance strategies
2. Measuring methods
3. Monitoring and Data collection

• Reasons of Failure
• Mechanical seals

1. Wet and dry type
2. Compressors versus Pumps shaft seals
3. Piping systems
4. Why seals fails

• Bearings

1. Roller antifriction types
2. Journal bearings
3. Range of applications
4. Lubrication of bearings
5. Lube-oil systems

• Shaft deflection

1. Critical speed and shaft deflection
2. Parameters affecting shaft deflection
3. Effects of shaft deflection on Mechanical seals and Bearings

• Cavitation in pumps

1. Net Positive Suction Head
2. Available against required NPSH
3. Effects of Cavitations
4. Cures for cavitation

• Surge in compressors

1. Causes of compressor surge
2. Surge and compressor performance
3. Anti-surge methods

• Off-design operating conditions

1. Variation in inlet conditions
2. Multistage compressors performance
3. Compressors in parallel operation

Case Studies

• Misalignment Problems
• Bearing failures
• Mechanical seals failures
• Unbalance problems
• Thrust bearing balancing system failures

Certificate

TRAINIT ACADEMY will award an internationally recognized certificate(s) for each delegate on completion of training.

Methodology

The training course will be highly participatory and the course leader will present, guide and facilitate learning, using a range of methods including formal presentation, discussions, sector-specific case studies and exercises. Above all, the course leader will make extensive use of real-life case examples in which he has been personally involved. You will also be encouraged to raise your own questions and to share in the development of the right answers using your own analysis and experiences. Tests of multiple-choice type will be made available on daily basis to examine the effectiveness of delivering the course.

• 30% Lectures
• 30% Workshops and work presentation
• 20% Case studies & Practical Exercises
• 10% Role Play
• 10% Videos, Software or Simulators (as applicable) & General Discussions

Fees

£5,250