A. Basic principles of fluidics [hydraulics and pneumatics]
1. Gas Law
2. Volumetric flow and pressure
3. Lubricity, viscosity and effects of viscous damping
B. Basic concepts of Hydraulics/Pneumatic cylinder operation
1. Force production by cylinder piston
2. Cylinder stroke
3. Cylinder loads
C. Operation considerations for pneumatic and hydraulic cylinders and valves for in-circuit applications
1. Review of safe operating
principles (SOPs) and use of personal protective equipment (PPE)
2. Overview of components and circuit schematics
3. Direction control of single-action cylinders
4. Direction control of double-action cylinders
5. Pressure and stroke speed of pneumatic cylinders
6. Speed control circuits for pneumatic cylinders
7. Cylinder dwell
8. Lubrication of short stroke air cylinders
9. Considerations for multiple cylinders in a circuit
10. Sequencing and speed control
11. Cylinder drift problems
12. Flow dividers in hydraulic circuits
13. Sectional valves for directional control
14. Bypass valves for sequencing
15. Relief, by-pass and pressure-reducing valves for pressure control
16. Speed control methods
17. Needle valve speed control
18. Design tips to prevent overheating
19. Holding against static loads
D. Other Hydraulics/Pneumatic components found in a typical
utility-sized wind turbine generator (WTG), and their applications
1. Pressure intensification
2. Typical applications for pressure intensifiers
3. Long-holding press circuits
4. Hydraulic motors and their comparison to electric motors
5. Directional control of hydraulic motors
6. Typical usage of hydraulic motors
7. Accumulators
8. Typical circuits using accumulators
E. Troubleshooting and repair (TS&R) of fluidics circuits
1. Identify and observe applicable SOPs and use PPE
2. Circuit and component inspection
3. Leak location, system de-pressurization and repair
4. Valve adjustments
5. Cylinder bleed-offs
6. Hose replacements
7. Oil sample collection and analysis
8. Oil and oil filter changes
A. Hydraulics Trainer (Operation with emphasis on following safe operating procedures)
1. Safety review for hydraulics operations
2. Schematic review
3. Circuit tracing and line hookups
4. Volumetric flow control and monitoring
5. Pressure control and monitoring
6. Linear actuator & control (adjust stroke, rate, clamp-force, and hold time)
7. Hydraulic motor & control (clockwise and counterclockwise rotation, start, stop)
B. Hydraulics Trainer (Troubleshooting & Maintenance with emphasis on following safe operating procedures)
1. Component Inspection
a) Leak location, system de-pressurization and repair
b) Hose replacements
c) Seal replacements
2. Verification of circuit hookup to schematic
3. Verification of design monitoring checkpoints
4. Hydraulic oil level check and correction, or oil change
5. Hydraulic oil filter check and replacement
6. Purging hydraulic oil from system and oil replacement
a) Oil sample collection and analysis
7. Set-up of flow and pressure levels to specifications
a) Valve adjustments
b) Cylinder bleed-offs