×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

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.

Students Click Here

Two stage compressor

Two stage compressor

Two stage compressor

(OP)
Hi ;
Is it possible that one stage of a two throw , two stage reciprocating compressor run while the other one is stopped?
if yes, except the shaft failure , is there any other possible failure cases to have this scenario ?

RE: Two stage compressor

I saw one once that managed to throw a conrod without any of the debris getting mixed up with the crankshaft or punching out through the side of the crankcase (in fact, it actually disconnected all four pistons - the operators complained that it appeared slow to build pressure, while remarking that it was running much more smoothly and quietly than usual). Worth saying that this one was the exception - we went through a phase of breaking quite a lot of machines and in every other case, the damage was more obvious (with metal - though disturbingly little oil - distributed liberally around the compartment).

RE: Two stage compressor

(OP)
Thanks Zeusfaver to share your experience.

RE: Two stage compressor

Hi, AMXX thanks for such a brilliant question

RE: Two stage compressor

Yes, you can pull the suction valves out of one head of the compressor. You know that the unit will be a single stage and subject to higher differential and high rod loads and high discharge pressures

RE: Two stage compressor

(OP)
dcasto,

Thanks. This can be an arranged operation. My question was about failure of one stage of the compressor during running of the train.

RE: Two stage compressor

The compressor manufacturers even have dummy cylinders where the compressor may require just 3 throws so the 4th throw has a dummy weight to balance the forces on the unit. Since the weight will not change on the throw you "crippled" and crippled is an actual technical term here, there is almost a nonissue. The issues will come with lubrication of the pin and bushing, but with no forces, it isnt a real bad issue

https://journals.sagepub.com/doi/abs/10.1177/09544...

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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