When are expansion joints in the suction required?
When are expansion joints in the suction required?
(OP)
Our client is asking us to put expansion joints on the suction of all pumps in the thermal power plant that we are designing and building. pneumatic, centrifigal, everything.
What defines the need of expansion joints in these pumps? I imagine anywhere where there is heat or vibration, but at what levels should i start considering expansion joints?
thank you
What defines the need of expansion joints in these pumps? I imagine anywhere where there is heat or vibration, but at what levels should i start considering expansion joints?
thank you





RE: When are expansion joints in the suction required?
RE: When are expansion joints in the suction required?
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"Pumping systems account for nearly 20% of the world's energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic (Note: Make that 99.99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: When are expansion joints in the suction required?
RE: When are expansion joints in the suction required?
EXPANSION JOINTS
thread378-230168: EXPANSION JOINTS
RE: When are expansion joints in the suction required?
- the pipe is not routed/designed and loads are unknown
- the pump is not purchased and allowable loads are unknown
This may not result in optimal solution, but it does prevent costly rework in projects where activities are a little out of sync.
I2I
RE: When are expansion joints in the suction required?
If you need to use EJ's, be sure to design your piping correctly. Just throwing an EJ in a system may have unintended consequences. A few examples how to install them correctly on pumps:
http://www.psi-linedpipe.com/ExpJointInstll.htm
RE: When are expansion joints in the suction required?
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RE: When are expansion joints in the suction required?
In addition in building services noise transmission via the piping can be thus avoided.
Also trades these days are not as skilled or diligent and the flexibility afforded is welcomed.