Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
Page 1
CHAPTER 10 Power Transmission and Lubrication
Table of Contents
Contents
Page
Chapter Overview
2
2
2
4
5
7
9
12
13
14
15
16
17
17
18
28
31
Class Preparation Checklist
Chapter Objectives
Agenda
Lesson Plan
10.1 Electricity and Electrical Power Transmission
10.2 Operating Principles of Mechanical Power
Transmission
10.3 Bearings
10.4 Principles of Lubrication
10.5 Potential Problems
10.6 Safety and Environmental Hazards
10.7 Process Technician’s Role
Summary and Wrap-Up
Suggested Student Activities
End of Chapter Review Questions
Clicker Questions
Appendix
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
Page 2
CHAPTER 10 Power Transmission and Lubrication
Chapter Overview
In the process industries, the operator monitors electrical transmission, electricity, and
mechanical power transmission. An operator can manage the electrical power
transmission with generators, transformers, switches, motor control centers (MCCs),
breakers, and hand switches.
Lubrication is a key component of mechanical power transmission because it
establishes a stable, fluid barrier between equipment components and reduces friction,
heat buildup, and equipment wear.
Class Preparation Checklist
1.
Familiarize yourself with the chapter content.
2.
Bring cutaways or other hands-on teaching aids if available.
3.
Copy and distribute any fill-in-the-blank handouts for today’s content.
4.
Safety Minute prepared or assigned.
5.
Review the PowerPoint slides associated with this chapter (if used) and
make sure that your computer is correctly set up to navigate the slide deck
smoothly.
6.
Request the appropriate A/V equipment (if needed) and make sure that
your computer is correctly synched with the projector to avoid any delays in
the classroom.
Chapter Objectives
10.1 Describe the elements of electrical power transmission and distribution
(NAPTA Power Transmission and Lubrication).
10.2 Describe the elements of mechanical power transmission (NAPTA Power
Transmission and Lubrication).
10.3 Explain types of bearings, gears, and seals and their purpose (NAPTA
Power Transmission and Lubrication).
10.4 Describe the principles of lubrication (NAPTA Power Transmission and
Lubrication).
10.5 Identify potential problems associated with mechanical power transmission
and lubrication (NAPTA Power Transmission and Lubrication).
10.6 Describe safety and environmental hazards associated with mechanical
power transmission and lubrication (NAPTA Power Transmission and
Lubrication).
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
10.7 Describe the process technician’s role in mechanical power transmission
and lubrication procedures (NAPTA Power Transmission and Lubrication).
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
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Class Agenda
Activity
Minutes
PPTs
1. Welcome to Class
1
1
2. Introduction and Agenda
1
2
3. Safety Minute
2
3
4. Objectives
1
4
5. Objectives (cont.)
1
5
6. Terms
1.5
6
7. Terms (cont.)
1.5
7
8. Electricity and Electrical Power Transmission
1.5
8
9. Electricity and Electrical Power Transmission
(cont.)
1.5
9
10. Types of Current
1.5
10
11. Components of an Electrical Distribution System
1.5
11
12. Components of an Electrical Distribution System
(cont.)
1
12
13. Operating Principles of Mechanical Power
Transmission
1
13
14. Couplings
1
14
15. Couplings (cont.)
0.5
15
16. Belts
1
16
17. Belts (cont.)
1
17
18. Chains
1
18
19. Chains (cont.)
1
19
20. Magnetic Drive Pump (Mag Drive)
1
20
21. Bearings
1
21
22. Bearings (cont.)
1
22
23. Bearings (cont.)
1
23
24. Gears
2
24
25. Principles of Lubrication
3
25
26. Principles of Lubrication (cont.)
1
26
27. Potential Problems
1
27
28. Potential Problems (cont.)
4
28
29. Safety and Environmental Hazards
0.5
29
30. Personal Safety
2
30
31. Equipment Operations
3
31
32. Environmental Impact
1
32
33. Process Technician’s Role
3
33
34. Summary and Wrap-Up
3
34
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
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Chapter 10 Lesson Plan
Welcome Everyone to Class
Time: 1 minute
Resources: Slide 1
Introduction and Agenda
Time: 1 minute
Resources: Slide 2
Safety Minute
Time: 2 minutes
Resources: Slide 3
(Note to Instructor: Follow this procedure for the Safety Minute.)
Objectives
Time: 1 minute
Resources: Slide 4
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
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Objectives (cont.)
Time: 1 minute
Resources: Slide 5
Terms
Time: 1.5 minutes
Resources: Slide 6
Sample Instructor Script:
Turn to the terms page in the chapter on power transmission and lubrication. I’ll call on
you to read the term and definition aloud and then use that term in a sentence. We’ll
begin with the following terms:
Terms (cont.)
Time: 1.5 minutes
Resources: Slide 7
Sample Instructor Script:
Continuing with terms to know, we have
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
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Time: 1.5 minutes
Resources: Slide 8
Sample Instructor Script:
Electricity in a process facility is used for instrumentation and to power motors. The
common voltages used in the process industries include low DC voltage (12 or 24 volt
DC) and AC voltages including 120 volts, 240 volts, and 480 volts. Electrical
transmission in a process facility can involve multiple sources of electrical power.
10.1.1 Electricity and Electrical Power Transmission (cont.)
Time: 1.5 minutes
Resources: Slide 9
Sample Instructor Script:
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
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10.1.2 Types of Current
Time: 1.5 minutes
Resource: Slide 10
Sample Instructor Script:
Alternating current (AC) is electric current that reverses direction periodically, usually
60 times per second. In the United States, the AC power supply changes direction
60 times per second. This cycling is called frequency, or cycles, per second.
10.1.3 Components of an Electrical Distribution System
Time: 1.5 minutes
Resources: Slide 11
Sample Instructor Script:
Electricity is a form of energy that must come from a power source such as batteries or
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
10.1.4 Components of an Electrical Distribution System (cont.)
Time: 1 minute
Resources: Slide 12
Sample Instructor Script:
Other safety devices include the following:
10.2 Operating Principles of Mechanical Power Transmission
Time: 1 minute
Resources: Slide 13
10.2.1 Couplings
Time: 1 minute
Resources: Slide 14
Sample Instructor Script:
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
Couplings are mechanical devices used to connect and transfer rotational energy from
the shaft of the driver to the shaft of the driven equipment. Couplings have several
functions. The first function is to connect the two rotating shafts together. A second
function is to eliminate any misalignment between the rotating shafts that are coupled.
10.2.2 Couplings (cont.)
Time: 0.5 minute
10.2.3 Belts
Time:
1 minute
Resources: Slide 16
10.2.4 Belts (cont.)
Time: 1 minute
Resources: Slide 17
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Chapter 10 Power Transmission and Lubrication
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10.2.5 Chains
Time: 1 minute
Resources: Slide 18
10.2.6 Chains (cont.)
Time: 1 minute
Resources: Slide 19
10.2.7 Magnetic Drive Pump (Mag Drive)
Time: 1 minute
Resources: Slide 20
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Chapter 10 Power Transmission and Lubrication
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10.3 Bearings
Time: 1 minute
Resources: Slide 21
10.3.1 Bearings (cont.)
Time: 1 minute
Resources: Slide 22
10.3.2 More Bearings
Time: 1 minute
Resources: Slide 23
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
10.3.2 Gears
Time: 2 minutes
Resources: Slide 24
Sample Instructor Script:
A gear is a toothed wheel that engages another toothed mechanism in order to change
the speed or direction of transmitted motion. Gears come in many sizes and shapes.
10.4 Principles of Lubrication
Time: 3 minutes
Resources: Slide 25
Sample Instructor Script:
Lubricants consist of a base (for example, a natural or synthetic hydrocarbon) and
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Chapter 10 Power Transmission and Lubrication
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10.4.1 Principles of Lubrication (cont.)
Time: 1 minutes
Resources: Slide 26
Sample Instructor Script:
10.5 Potential Problems
Time: 1 minute
Resources: Slide 27
Sample Instructor Script:
10.5.1 Potential Problems (cont.)
Time: 4 minutes
Resources: Slide 28
Sample Instructor Script:
Process technicians must also have knowledge of the following things:
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Chapter 10 Power Transmission and Lubrication
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10.6 Safety and Environmental Hazards
Time: 0.5 minute
Resources: Slide 29
10.6.1 Personal Safety
Time: 2 minutes
Resources: Slide 30
Sample Instructor Script:
Process technicians should always be aware of the potential hazards associated with
transmission and lubrication operations.
10.6.2 Equipment Operations
Time: 3 minutes
Resources: Slide 31
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Chapter 10 Power Transmission and Lubrication
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Sample Instructor Script:
Equipment operation hazards are associated with power transmission during normal
and abnormal operations. The possibility of failed transmission, gears, and lubrication
systems exists at all times.
10.6.3 Environmental Impact
Time: 1 minute
Resources: Slide 32
10.7 Process Technician’s Role
Time: 3 minutes
Resources: Slide 33
Sample Instructor Script:
Process technicians may be required to complete any number of tasks associated with
• Monitoring and ensuring proper operation of oil centrifuges
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Chapter 10 Power Transmission and Lubrication
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• Monitoring vents in lube oil reservoirs
Summary and Wrap–Up
Time: 3 minutes
Resources: Slide 34
(Note to Instructor: To wrap up the lesson, complete the following activities.)
• Summarize today’s lesson.
• Answer questions.
• Announce the next reading assignment and homework.
• Remind the next person who will be doing a Safety Minute
Suggested Student Activities
(Note to Instructor: Time permitting, do the activities listed below or possibly assign
them as homework. Be sure to remind students what to read for the next class.)
1. Describe the basic principles of electricity, including the difference between AC and
DC current, and identify which type is most commonly used in the process industry.
2. Write a one-page paper about the purpose and principle of mechanical power
transmission.
3. With a classmate, research couplings and explain the three main types of couplings.
4. With a pulley system in a lab setting, show how to properly adjust belt tension.
5. Given a drawing, identify the location of the bearings on a piece of equipment and
identify the type of bearing.
6. Given drawings or actual gears, identify and describe spur, helical, worm, and bevel
gears.
7. Explain the process technician’s role in the following tasks:
a) Transmission maintenance
b) Maintaining oil levels
c) Changing system filters
d) Adding grease to bearings devices, and/or typical lubricating procedures or
requirements.
Process Technology Equipment
Chapter 10 Power Transmission and Lubrication
8.Investigate different types and grades of lubricants, devices, and procedures.
1. What is a measure of resistance in electrical circuits?
A. Ohm
B. Amp
C. Watt
D. Volt
2. What is the electromotive force, or a measure of current, that establishes a
current of one amp through a resistance of one ohm?
A. Ohm
B. Amp
C. Watt
D. Volt
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Chapter 10 Power Transmission and Lubrication
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3. What voltage is used to supply pumps and other associated equipment?
A. 110
B. 120
C. 220
D. 660
4. Which of the following is a characteristic of DC power?
A. Polarity is fixed.
B. Voltage varies during cycles.
C. It is difficult to measure.
D. Voltage can be stepped up or down by a transformer.
5. Which of the following characteristics are similar between AC and DC power?
A. Voltage can be stepped up or down by a transformer.
B. Polarity is fixed.
C. Voltage varies during cycles.
D. Heating effect is the same.
Answers: