Dynamic Compressors (Component Design and Materials)
- Types; centrifugal, axial & ejectors; principle of operation and application
- Main parameters such as pressure ratio, pressure, mass flow rate, flow & pressure coefficients
- Specific speed and it’s impact on efficiency
- The fan laws
- Centrifugal compressor stage & main components; types of impellers; volute;
- diffuser, return channel, diaphragm , stage seal
- Various construction designs for centrifugal compressors; volute, barrel, integrally geared
- Multistage centrifugal compressors; axial forces and force balancing
- Axial compressor stage
- Comparison between centrifugal & axial compressor; application
- Compressor performance curve; none dimensional parameters; comparison between axial & centrifugal curve.
- Axial compressor construction design
- Compressor materials
- Identifying main points on compressor curve; surge point, surge line; stonewall
- Compressor stall & rotating stall
- Full compressor characteristic
- Explaining compressor surge
- Operation of compressor/system; operating point; transient conditions
- Capacity control and surge control methods
- Operation and performance checks
- Setting maintenance frequencies and procedures
- Preparing inspection and overhaul plans and schedules
- Preparing spare parts orders using manufacturer’s documents
- Disassembly/ assembly procedures for barrel and axial compressor
- Compressor inspection; shaft, mechanical components, seals, clearances
- Compressor auxiliary systems; lubrication, sealing, cooling, surge control and their inspection
PD (positive displacement) Compressors
- Main types; principle of operation and application
- PD compressor performance curve; interaction with a system; pulsation dampening
- Reciprocating compressor; construction, arrangement & main mechanical
- components; piston, piston, rod, cylinder, crankshaft, cross-head, packing
- Compressor Valves (Operation and Maintenance Problems)
- Reciprocating compressor capacity control; loader/un-loader, pockets, clearance
- Piston Rod Packing
- Piston rod and frame loading
- Cylinder cooling
- Non-lubricated compressors
- Labyrinth Piston Compressors
- Rotary PD compressors, mainly helical and lobe types
- Reciprocating compressors maintenance
- Auxiliary system; lube oil, lubricator, cooling system
Overhaul and Repair of PD Compressors
- Compressor Alignment
- Web Deflection Measurements
- Foundation Problems and repair
- Bearing Maintenance and Replacement
- Cylinder Repair and Maintenance
- Rebuilding Compressor Pistons
- Installing Pistons on Piston Rods
- Setting Piston End Clearances
- Inspection and Refurbishment of Piston Rods
- Manufacture Techniques of Piston Rods and Parts replicatio