Mechanical Power II
Course Number: RET 122
Transcript Title: Mechanical Power II
Created: March 15, 2012
Updated: May 20, 2014
Total Credits: 5
Lecture Hours: 40
Lecture / Lab Hours: 0
Lab Hours: 30
Satisfies Cultural Literacy requirement: No
Satisfies General Education requirement: No
Grading options: A-F (default), P-NP, audit
Introduces the process of power generation. Discussion includes construction techniques involving cranes, rigging, and mechanical alignment procedures. Assemble a functioning scale model of a power generating turbine and participate in a safety workshop at a local wind farm. Prerequisites: RET 120, EET 112.
Upon finishing this course, students will:
- Be prepared to work in the power generation field understanding the process of power generation and the assembly, maintenance and operation of the machinery.
- Be knowledgeable about safety processes and procedures and be prepared to work safely around cranes and other heavy machinery.
- Be prepared to work safely alone and within a team on power generation projects.
Outcome Assessment Strategies
Evaluation is done by midterm and final exams, quality of lab work and of a term project.
Texts and Materials
- Smith, Jamie C., Ed., 2006, Fundamentals of Technology: Principles of Mechanisms, Version 4.01. TII Technical Educational Systems, Mundelein, IL.
- A custom textbook will also be created consisting of selected chapters and articles from journal, manual, textbook, and Web resources, copied with publishers’ permission.
Course Content (Themes, Concepts, Issues and Skills)
- How to assemble a scale model of a functioning wind turbine.
- Principles and logistics of cranes and rigging.
- Center of gravity of crane-load systems.
- Lever principles as applied to crane and load:
- Tipping axis
- Wind loading
- Blocking, outriggers
- Maintaining clearance of power lines
- Converting between US Standard Weight System to metric weight system.
- Load edge related to sling.
- Types and characteristics.
- Hardware and correct use of lifting capacity.
- Eyebolts and hoist rings.
- Sling inspections and safe handling.
- Types of hitches and lifting capacities.
- Wire rope, synthetic web, and round slings.
- Removal-from-service issues:
- Inspection and removal
- Capacity loss
- Crane safety
- Mechanical alignment:
- Pipes with flange alignment
- Shaft-to-shaft alignment procedures
- Centerline alignment
- Two 3" pipes with flange alignment
- Types of misalignment
- Two-plane alignment
- Run-out correction
- Preparation of driver and driver unit
- Alignment operations
- Coupling types
- Bearings - types, float, installation best practices
- Calculating for alignment
- Alignment specifications and tolerance
- Straight edge, feeler gauge (single/double), taper gauge (gap gauge), Cliter spark plug gauge taper.
- Measurement of alignment
- Surface alignment method
- Tools for alignment:
- Porta power, jacks, etc.
- Laser alignment
- Basic maintenance and operation of a wind turbine.
- Basic mechanical theory as applied to gear ratios and gearboxes.
- Application of mechanical theory as applied to levers, wheels, axles, pulleys, and other mechanisms to wind turbine construction.
- Propeller blade pitch - hydraulic/motor type.
- Propeller blade yaw -nacelle rotation, motor type and actuator.
- Drive trains, drive lines, U joints, and transmission.
- Introduction to tools of the trade:
- Wrenches, torque wrenches, hammers, screwdrivers, grease guns, DMM, porta power, other miscellaneous tools, and dirty grease disposal.
- Airframe aerodynamics (wind - surface boundary effects on propellers, air foils, and rotors).
- 3-Phase power line connections.
- Generator-Power line setups (no substation)