Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.


sub vibration on turbo expander/compressor

sub vibration on turbo expander/compressor

thread384-197619: Sub vibration Turbo Expander/compressor
Does anybody could help me with this problem? We have this same problem here in Brazil and we didn´t find the main cause. Does anybody found the solution or the cause of this sub vibration on turbo expander? Our sub is 0,22 X rpm and anplitude 0,2 mils. It is causing premature failure on the expander side bearings (tilting pad).

RE: sub vibration on turbo expander/compressor

Can you answer the questions that were asked in the referenced thread?

Mike Halloran
Pembroke Pines, FL, USA

RE: sub vibration on turbo expander/compressor

The fluid is natural gas on expander side and residual gas on compressor side. We notice that the sub vibration appeared in 22000 rpm. The nominal speed is 35000 rpm. Inclusive addition to this we ask the unit operator to increase the gas temperature on expander side and the sub vanished but the unit efficience went down and with a little bit of process variation the sub come back. The data Sheet is attached.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close