Pump discharge line vibration at 100bar
Pump discharge line vibration at 100bar
(OP)
Dear Experts,
Please find the attached CII file and Site vedio. The pump discharge line is vibrating heavily before 100bar.
the process parameters are as follows; Design press= 197bar, operating press= 172bar, ope temp = 150deg C.
kindly suggest to avoid the vibration. The model frequency matched to = 6hz, no FIV performed.
Do it require damping type or special type supports?
The secondary steel portals which are exciting to be size to be modified?
https://res.cloudinary.com/engineering-com/video/u...
https://files.engineering.com/getfile.aspx?folder=...
Regards
PC
Please find the attached CII file and Site vedio. The pump discharge line is vibrating heavily before 100bar.
the process parameters are as follows; Design press= 197bar, operating press= 172bar, ope temp = 150deg C.
kindly suggest to avoid the vibration. The model frequency matched to = 6hz, no FIV performed.
Do it require damping type or special type supports?
The secondary steel portals which are exciting to be size to be modified?
https://res.cloudinary.com/engineering-com/video/u...
https://files.engineering.com/getfile.aspx?folder=...
Regards
PC
RE: Pump discharge line vibration at 100bar
Either the pump is reciprocating or blower or gear pump the piping natural frequency is matching the pump frequency or multiples which cause the vibration, perhaps the system is resonating. You need to find out the the forcing harmonics of the pump and get away from them at least for 3 harmonics by increasing (most likely) or reducing the stiffness of the piping.
If the fluid is liquid and temperature allows you may need to put a pulsation dampener to the system to eliminate the mechanical and pulsation vibrations.
RE: Pump discharge line vibration at 100bar
Thanks for your prompt response. The pump is plunger type and used for flushing water with high pressure.
RE: Pump discharge line vibration at 100bar
RE: Pump discharge line vibration at 100bar
That software models all the pulsation dampers, pipe supports, compliant supports, fixed supports, elbows, tees etc.
It's a real pain but if you don't you will get destructive vibrations.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Pump discharge line vibration at 100bar
Yes the pulsation damper valve is directly mounted on the pump nozzle. Even though when the pressure reaches 100bar more vibration starts.
We adjusted the support span too,but no use.
RE: Pump discharge line vibration at 100bar
Yes you are right.we are trying to contact the vendor sending him the as-built isometric drawings for pulsation study.
RE: Pump discharge line vibration at 100bar
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Pump discharge line vibration at 100bar
RE: Pump discharge line vibration at 100bar
https://youtube.com/watch?v=80s3fzSGvO8&featur...
Additionally, do you have vibration dampener on the suction side as well? See the installation guide below.
https://serfilcocom.blob.core.windows.net/pdfs/lit...
Your pump supplier should guide on what to do and guide you on the installation of vibration dampeners and sizing.
RE: Pump discharge line vibration at 100bar
https://www.911metallurgist.com/blog/wp-content/up...