VIBRATION-ABSORBING PIPELINE SURFACE Russian patent published in 2012 - IPC F16L55/02 

FIELD: vibroacoustic protection.

SUBSTANCE: vibration-absorbing surface comprises a hard pipe coating on the pipe exterior with a mechanical fastening. The said coating is cut into four or more strips circumferentially along the pipe with a gap between each other, and the pressure hard pipe case shell is divided into at least four arc-shaped strips separated all round the pipe. These arc-shaped strips are fastened to each other with mechanical fastenings without forming the solid case.

EFFECT: dampening naval pipeline vibrations; vibrations in the dampened pipelines are reduced by 10-20 dB within the range of 1300-1500 Hz.

2 cl, 2 dwg