×
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

HP Steam Inlet Line - high nozzle loads

HP Steam Inlet Line - high nozzle loads

HP Steam Inlet Line - high nozzle loads

(OP)
Good day all,

I am trying to practice my modeling skills with C2 so I am trying an HP Steam Turbine inlet line made from A 335 P11 and design conditions of 2000 psig at 950F.

I modeled everything as per isometric (including the actual installed hanger data) up to a termination point where running the analysis shows SUS, EXP and Alt-SUS cases to be acceptable.

However I did try to model the steam turbine for thermal growth which is made from cast chrome moly and done as a rigid element from one leg (anchored to the ground) to the inlet nozzle (placed an anchor here with Cnode). Now I may have gone wrong here as it appears from the drawing that the other turbine support under the exhaust is also an anchor so I wasn't sure if I'd need to model a rigid element from here back to the inlet nozzle.

My issue arrives when I look at the restraint report where I have quite high nozzle forces and moments. According my documentation the value of 3F+M < 8000 where F and M are resultant moments respectively (M alone is high in OPE, SUS and EXP cases). So I am sure that I went wrong somewhere as this line has been in service for over 10 years with no problems. Would someone be able to look at my model and guide as to where I have gone wrong ?

RE: HP Steam Inlet Line - high nozzle loads

I tried to open ur file , but I couldn't , I think u r using a newer version , I am using 2014 version

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



News


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