Re: Allowable Loads on a Recip. Compressor

Carlos:
The only dumb question is the one you don't ask...

Allowable nozzle loads on recip compressors are really specified by the manufacturer. This comes down to deformation of the crosshead extension piece, which can lead to crosshead bearing failure. So this is something related to how much cast iron the mfr. put in his frame and cylinders.

Now, calculating the actual nozzle loads - there it gets cute. You have the alternating loads from gas forces acting on the pulsation bottle ends, plus any temperature effects. Actually, bottle supports should be adjusted when the unit is at operating temperature to nearly zero the temp. effect.

Hope this helps.

George McKinney

• Original Message -----
  From: ceacs
  To: <a href="/group/PipingDesign/post?postID=kVO2iCl2DS-Vt0qd1S5ZeO_zBILdt0VEurSDKz0-hqzOe1-42ZGHHzzbYpv55dhtLWS1bykAEO_CvO2nbm4DPdFD">PipingDesign@yahoogroups.com</a>
  Sent: Monday, February 16, 2004 4:16 PM
  Subject: [PipingDesign] Allowable Loads on a Recip. Compressor
  

Hi,

Sorry to bother you guys with this stupid question, but i really
need some help with this matter.

Are there any standard or calculation method available for Recip.
Compressor nozzle allowable loads determination? (I believe API-617
only covers centrifugal and axil compressor)

Best Regards,
Carlos Eduardo

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[Non-text portions of this message have been removed] Received on Tue Feb 17 07:32:00 2004