Standards/codes for high temperature piping

[JJJ32]

Hi everyone!

I am new to this forum so don't want to appear cheeky be seeking your help straight away... but...

I'm designing a piping system for aerospace application that will experience temperatures up to 800C. Looking to use Nickel alloy piping and was asked to design to EN13480 british standard, however, it doesn't seem relevant.

Can anyone suggest a code/standard that might be appropriate for piping of this type or for general aerospace pipe situations?

Any help/advice is very much appreciated.

Thanks!

 

[WKTaylor]

Aircraft? Engine? Support equipment? Fixed-base System type?

Fluid type? Pressures? Flow-rates/inertias? Pipe/tubing Dia X wall thickness? Inconel [nickel alloy] 600 or 625?

System have fittings? valves? reservoirs? clamps?

etc...

Unfortunately, You've left too many open questions to start a working discussion. Pleasae advise details noted.

Regards, Wil Taylor

Trust - But Verify!

We believe to be true what we prefer to be true.

For those who believe, no proof is required; for those who cannot believe, no proof is possible.

Unfortunately, in science what You 'believe' is irrelevant – "Orion"

 

[JJJ32]

Ah ok

sorry for being vague

Its a piece of aircraft engine test equipment to be used during the engines operational life. Its a fixed base system, all the supports are yet to be designed but the whole system will experience significant vibrational loading along with loads due to cycling thermal conditions.

Max pressure is expected to be 75 bar and the fluid will be air. Max. flow rates vary between 11 and 15lbm/s

I am intending to use inconel 625 in a schedule 40 pipe size 4" and 6" with wall thicknesses 0.237" and 0.280" respectively.

I do not have to design any valve equipment but need to use bolted flanges to connect sections of pipe and v band connectors to attach to the part on test.

I hope this paints a clearer picture.

 

[WKTaylor]

You are definitely NOT in the 'arena' of aircraft, or aircraft engine, installed pneumatic piping/ducting [flight systems]. We have specs for pnuematic systems/components... but not nearly at the operating pressure/temp range [75-bar/800C] You are describing... That is more in the nature of steam power generation/condensation.

Suggest another forum in ME power generation.

Regards, Wil Taylor

Trust - But Verify!

We believe to be true what we prefer to be true.

For those who believe, no proof is required; for those who cannot believe, no proof is possible.

Unfortunately, in science what You 'believe' is irrelevant – "Orion"

 

[WKTaylor]

Suggest posting this question to the following Eng-Tips forum...

Pipelines, Piping and Fluid Mechanics engineering Forum:

http://www.eng-tips.com/threadminder.cfm?pid=378

Regards, Wil Taylor

Trust - But Verify!

We believe to be true what we prefer to be true.

For those who believe, no proof is required; for those who cannot believe, no proof is possible.

Unfortunately, in science what You 'believe' is irrelevant – "Orion"

 

[tbuelna]

JJJ32-

As wktaylor noted, I don't think it would be possible to use a V-band coupling with a 6" pipe at 75bar. While 625 Inconel pipe at the thickness noted would likely work for the pressures and temperatures described, when connecting to a lightweight turbine engine structure it is important to make sure the connection does not produce excessive stress on the engine. Typically you would use some sort of strain isolation between the pipe and engine attachment, like a metal bellows or flex joint.