03-Reciprocating Gas Compressors 1.0

68
7/27/2019 03-Reciprocating Gas Compressors 1.0 http://slidepdf.com/reader/full/03-reciprocating-gas-compressors-10 1/68 1. Print slides 2-66 as note pages and distribute 2. Print slide 67 as a slide and distribute 3. Print slide 68 as a slide but do not distribute 4. Click on Slide Show, view slide show to start the show 5. Hit escape to end show. 6. If any icons ( ) appear in the bottom left of any slide, touch on the icon to animate the slide. Hit escape to stop the animation and return to the slide. Move the cursor slightly before advancing to the next slide. 7. After tests are taken, grade them and multiply the number correct by 10 to get a percentage. Write the percentage on the test and send them to your district training record keeper for processing.

Transcript of 03-Reciprocating Gas Compressors 1.0

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1. Print slides 2-66 as note pages and distribute

2. Print slide 67 as a slide and distribute

3. Print slide 68 as a slide but do not distribute

4. Click on Slide Show, view slide show to start the show

5. Hit escape to end show.

6. If any icons ( ) appear in the bottom left of any slide, touch

on the icon to animate the slide. Hit escape to stop the animation

and return to the slide. Move the cursor slightly before advancing

to the next slide.

7. After tests are taken, grade them and multiply the number 

correct by 10 to get a percentage. Write the percentage on the test

and send them to your district training record keeper for processing.

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Reciprocating GasCompressors

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100psi

10psi

Gas well Gas pipeline

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10psi

105psi

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Applications

for 

Gas compressors

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Gas Injection

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Gas Lift

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Gas Gathering

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Coal Seam Gas Evacuation

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Gas Storage

open

open

closed

closed

Summer 

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Gas Storage

closed

closed

open

open

Winter 

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Gas Transmission

Station 1 Station 2

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WATER STEAM

Gas Turbine

Fuel Booster Co-generation (Co-gen)

application

GENERATOR TURBINE ENGINE

BOILER

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Larger diameter cylinders are for lower 

pressures. Gas, at a lower pressure,

occupies more space.

The size of the cylinder is determined by the

pressure and quantity of the gas to be

compressed.

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Smaller diameter cylinders are for 

higher pressures. Gas, at a higher 

pressure, occupies less space.

The size of the cylinder is determined by the

pressure and quantity of the gas to be

compressed.

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CYLINDER BORE

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INLET VALVES

DISCHARGE VALVES

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Differential pressure opens

the inlet valves.

50 psi

45 psi

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Springs inside the valve

close the valve.

50 psi

50 psi

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Differential pressure holds

the inlet valve closed.

50 psi

105 psi

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100 psi

100 psi

Springs inside the valve

close the valve.

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45 psi

100 psi

Differential pressure holds

the discharge valves closed.

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Valve internals

SEAT PLATE

DAMPING PLATE

DAMPING SPRINGS

CLOSING SPRINGS

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What causes the pressure

changes in the cylinder bore?

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~ r (length of bore)2

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PISTON ROD PISTON

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PISTON ROD

OIL IN

VENT

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114.7 psiA

458.8 psiA

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80 F

320 F

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100

psig

2000

psig

Ex: Overall ratio, when considering absolute, is 17.56 : 1

1st stg= 100-283, 2nd stg= 283-760, 3rd stg= 760-2000(2.6 : 1) (2.6 : 1) (2.6 : 1)

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100 psi

444 psi

“?” 

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vent and drain

connections

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4 .

   E  x  c  e  s  s   i  v  e  r  a   t   i  o  a

  c  r  o  s  s  a  c  y   l   i  n   d  e  r  c  a  n  r  e  s  u   l   t

   i  n  e  x  c  e  s  s   i  v  e  p   i  s   t  o  n  r  o   d   l  o  a

   d  a  n   d

   t  e  m  p  e  r  a   t  u  r  e   i  n  c  r  e  a  s  e .

 

   T

5 .

   T   h  e  p  u  r  p  o  s  e  o   f  a

  p   i  s   t  o  n   i  s   t  o  c   h  a  n  g  e  v  o   l  u  m  e  w   i   t   h   i  n   t   h  e  c  y   l   i  n   d  e  r .

 

   T

6 .

   A  c  y   l   i  n   d  e  r  c  a  n  o  n

   l  y   b  e  o  p  e  r  a   t  e   d  a  s   d  o  u   b   l  e  a

  c   t   i  n  g .

 

   F

7 .

   T   h  e  p  r   i  m  a  r  y  p  u  r  p

  o  s  e  o   f   t   h  e  c  o  m  p  r  e  s  s  o  r   f  r  a  m  e   i  s   t  o  c  o  n  v  e  r   t  r  o   t  a   t   i  n  g  m

  o   t   i  o  n   t  o

  r  e  c   i  p  r  o  c  a   t   i  n  g  m  o   t   i  o  n .

 

   T

8 .

   A  c  y   l   i  n   d  e  r  c  a  n   b  e

  m  a   d  e  s   i  n  g   l  e  a  c   t   i  n  g   b  y  r  e  m

  o  v   i  n  g  a   d   i  s  c   h  a  r  g  e  v  a   l  v  e  o

  n  o  n  e

  c  y   l   i  n   d  e  r  e  n   d .

 

   F

9 .

   L  a  r  g  e  c  y   l   i  n   d  e  r  s  a

  r  e  n  o  r  m  a   l   l  y  u  s  e   d   f  o  r   h   i  g   h

  p  r  e  s  s  u  r  e  s

 

   F

1   0 .

   P   i  s   t  o  n  r   i  n  g  s  a  r  e  a   d   d  e   d   t  o  s  e  a   l   t   h  e  c   l  e  a  r  a  n  c  e

   b  e   t  w  e  e  n   t   h  e  p   i  s   t  o  n  a  n   d   t   h

  e   b  o  r  e .

 

   T