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#61512 - 12/13/14 02:15 AM NEMA SM 23 STEAM LINE ANALYSIS
HasanNorton Offline
Member

Registered: 05/17/14
Posts: 2
Loc: india
HELLO,

Anyone help me out with this problem of steam line having 445 oC temp, 45 bar pr. with little high nozzle loading at operating condition,i am not able to pass this line at operating condition in accordance with NEMA SM23.

as far as routing is concern, i don't want to change it.

any possible advice!!


Attachments
PROJECT1_MSLINE _OPERATING.C2 (321 downloads)


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#61513 - 12/13/14 02:27 AM Re: NEMA SM 23 STEAM LINE ANALYSIS [Re: HasanNorton]
Shamim Huq Offline
Member

Registered: 11/24/08
Posts: 31
Loc: Texas, USA
What is your Pipe Size? Say, if it is a 8-12" line use one or more Guides at 4 to 6 diameters from the Nozzle. Again, depending on the size you can move it back and forth to get the best result and each guide not close than two diameters apart. It is a trial and error method in order to get the best result. Essentially you are eliminating or minimizing the moment vector at the nozzle.

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#61516 - 12/13/14 02:55 AM Re: NEMA SM 23 STEAM LINE ANALYSIS [Re: HasanNorton]
HasanNorton Offline
Member

Registered: 05/17/14
Posts: 2
Loc: india
thank you,

My line size is of 10".

Guide absolutely helped me to eliminate moment at Z direction but my turbine nozzles are vertical type so loading which is coming quite high is of +Fy.

please find the attached file below.


Attachments
PROJECT1_MSLINE _OPERATING.C2 (310 downloads)


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