DEVICE FOR ACTIVE SUPPRESSION OF HYDRODYNAMIC NOISE IN PIPELINE SYSTEMS

摘要

FIELD: physics.;SUBSTANCE: invention relates to vibroacoustic protection, reduction and propagation of hydrodynamic noise in marine and ship pipelines. Device operates as a system for active suppression of hydrodynamic noise and represents a section of pipeline with two thrust flanges and inserted into pipe section cut between flanges. Insert has its flanges, between which are vibrators and pipe component, which is flexible and corrugated. Control signals to vibrators are generated by a controller using information from accelerometers and additionally using signals from hydrophones. Vibrators are mounted parallel to pipeline axis.;EFFECT: use of disclosed invention in pipelines with appropriate control of electric voltage vibrators significantly reduce hydrodynamic noise in a wide frequency range.;1 cl, 2 dwg