Expansion bellows

[olmedo]

We are installing a 450 meters long 12" diameter steam line at 10 bars, is it normal to use multiple expansion bellows instead of expansion loops due to space limitations?

 

[Zapster]

Yes, they are common in utilidors where there is limited space.

 

[olmedo]

Thanks Zapster, but what do you mean by the word "utilidors". Sorry my knowledge of english is limited.

 

[HVACctrl]

That alright olmedo.
My knowledge of English is not limited and I still have no clue what that means!

Ed

http://www.engineerboards.com

 

[Zapster]

See the first sentence in the document.

http://www.usace.army.mil/publications/armytm/tm5-852-5/chap8.pdf

 

[stanier]

Only the Americans could invent a word like "utilidor". I suppose the study of it would be utilidorology!

Geoffrey D Stone FIMechE C.Eng;FIEust CP Eng

http://www.waterhammer.bigblog.com.au

 

[HVACctrl]

stanier (Mechanical) 16 Jul 06 19:17
Only the Americans could invent a word like "utilidor". I suppose the study of it would be utilidorology!
Geoffrey D Stone FIMechE C.Eng;FIEust CP Eng

http://www.waterhammer.bigblog.com.au

You're right! It is a logical word that makes since and is useful. I suppose its a combination of "utility" and "corridor", perhaps? Had to be someone creative and intelligent.

Ed

http://www.engineerboards.com

 

[stanier]

What is the problem with just saying "utility corridor" and not mutilating the English language!

Geoffrey D Stone FIMechE C.Eng;FIEust CP Eng

http://www.waterhammer.bigblog.com.au

 

[HVACctrl]

I guess it cumbersome? I don't know.
It deos sound a little funny. Its kind of like "rip rap". I had always heard people using it to refer to the broken-up chunks of concrete used to aid in shoreline erosion, etc... It wasn't until a few days ago that I actually saw it used on a technical document that I realized how fully accepted that silly term must have become. Where does it come from?

Ed

http://www.engineerboards.com

 

[Ashereng]

Different industries use different terms. Utilidor and rip rap appear in my industries contract and technical specifications.

Rip rap appears in wikipedia, with pictures, as I commonly understand its meaning.

Utilidor appears in wikipedia in a more narrowly defined scope, pertaining only to Disney theme parks. Oh well.

"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

 

[0707]

If your problem is space limitation you have to use expansion bellows and loops combinations.

It will be good to make a finite element analysis (FEA) of your piping system to see where are your piping stresses and system flexibility.

 

[0707]

For definition of utilidors go to

http://www.usace.army.mil/publications/armytm/tm5-852-5/chap8.pdf

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[precisionengineer]

Have you considered "Hyspan" ball joints? I have used them and swear by them. See

http://www.hyspan.com