Compressors And Seals Flashcards
What is a compressor?
Motivated by a prime mover into potential energy of compressed air.
What does a hollow energy triangle mean?
Air/gas
What is filled energy triangle represent?
Liquid
What are the main compressor types?
Displacement
Dynamic
What is a type of dynamic compressor?
Radial/ centrifugal
What are the two types of displacement compressors?
Rotary
Reciprocating
What is a type of rotary compressor?
Screw type/ helical
Vane
What are two types of reciprocating compressors?
Free piston
Diaphragm
What is positive displacement?
Continues to build pressure.
What is helical compressor?
Screw type
What is a centrifugal compressor good for?
Moving large volumes of air at relatively low pressure.
What are the 5 methods of unloading?
- Bypass
- Start/Stop
- Inlet valve regulation
- Inlet throttling
- Inlet closure
What is bypass unloading good for?
Use in large compressors.
What is start/stop unloading good for?
5-10hp small motors
What is inlet valve, inlet throttling, inlet closure good for?
Dynamic style only
Any time you draw air in a room what do you need?
Good ventilation
What is the function of a check valve?
Only allow fluid in one direction
What is the most common type of cylinder?
Double acting cylinder.
What does the primary seal do?
Seals between inside and outside.
What position does stroke adjuster work?
Retract only
What are 4 mounting styles?
Clevis
Trunnion
Side lug
Flange
What is extending a cylinder called?
Thrust load
What is cylinder retracting called?
Tension load
Where does cushion valve apply?
Only at end of stroke (extend or retract)
