Noisy N2 Pipework

[rosinante]

Hi All,
we use nitrogen at work for motive gas at 9bar and for furnace quench at 15bar,the gas is produced by vaporisers from a large LN2 cryo vessel outside the factory, it is piped into the building in 2" copper pipes,the motive gas consumption is very small and poses no problem,the quench gas is fed to large [50cubic M] buffer tanks to provide a large reservoir for quenching the Vac furnaces, when filling the buffer tanks the noise from the pipework is horrendous vibrating/resonating throughout the building,there are numerous 90 bends and the inaccessible overhead pipe work is about 35M long with no flexible connections in it,as the pressures in the buffer tanks near max the noise increases,the level is such that ear defenders are a must although there are no site req or signs for them,all pipe supports are metal clamps with no rubber in,are there any quick /cheap solutions?? any ideas welcome,I am not a mechanical engineer just a simple spark whos goin deaf!!!

Thanks

Chris

 

[the snooper]

you could use some of these below and fasten them to the pipe clamps

 

[Weldingartisan]

Can you restrict the volume with a regulating valve? Don't know much about vapourisers (nothing actually) but is the gas being drawn off too fast? Sounds like the velocity is too high, larger pipework maybe? Wouldn't have thought AV mounts would be much good for noise generated within the pipe, usually used for isolating plant and equipment noise (pumps, chillers, etc.) at source. W/A