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Pneumatic Technology > Compressors And Seals > Flashcards

Compressors And Seals Flashcards

1
Q

What is a compressor?

A

Motivated by a prime mover into potential energy of compressed air.

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2
Q

What does a hollow energy triangle mean?

A

Air/gas

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3
Q

What is filled energy triangle represent?

A

Liquid

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4
Q

What are the main compressor types?

A

Displacement

Dynamic

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5
Q

What is a type of dynamic compressor?

A

Radial/ centrifugal

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6
Q

What are the two types of displacement compressors?

A

Rotary

Reciprocating

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7
Q

What is a type of rotary compressor?

A

Screw type/ helical

Vane

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8
Q

What are two types of reciprocating compressors?

A

Free piston

Diaphragm

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9
Q

What is positive displacement?

A

Continues to build pressure.

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10
Q

What is helical compressor?

A

Screw type

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11
Q

What is a centrifugal compressor good for?

A

Moving large volumes of air at relatively low pressure.

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12
Q

What are the 5 methods of unloading?

A
  1. Bypass
  2. Start/Stop
  3. Inlet valve regulation
  4. Inlet throttling
  5. Inlet closure
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13
Q

What is bypass unloading good for?

A

Use in large compressors.

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14
Q

What is start/stop unloading good for?

A

5-10hp small motors

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15
Q

What is inlet valve, inlet throttling, inlet closure good for?

A

Dynamic style only

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16
Q

Any time you draw air in a room what do you need?

A

Good ventilation

17
Q

What is the function of a check valve?

A

Only allow fluid in one direction

18
Q

What is the most common type of cylinder?

A

Double acting cylinder.

19
Q

What does the primary seal do?

A

Seals between inside and outside.

20
Q

What position does stroke adjuster work?

A

Retract only

21
Q

What are 4 mounting styles?

A

Clevis
Trunnion
Side lug
Flange

22
Q

What is extending a cylinder called?

A

Thrust load

23
Q

What is cylinder retracting called?

A

Tension load

24
Q

Where does cushion valve apply?

A

Only at end of stroke (extend or retract)

25
Q

What are the two types of pneumatic tools?

A

Rotary

Percussive

26
Q

What does a rotary motor do?

A

Converts potential energy of compressed air into rotary mechanical energy

27
Q

Why are vane motors really good?

A

Long life because they self adjust.

Pneumatic Technology (5 decks)

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