OSCILLATION DAMPER FOR HYDRAULIC SYSTEMS Russian patent published in 2015 - IPC F16L55/04 

FIELD: machine building.

SUBSTANCE: damper contains casing with input and output lids with made in them channels in form of the truncated cone, connected by the central pipe installed in the casing with creation of the cavity coupled with the central pipe by throttles, additional throttle. The throttles are located in the input and output lids radially along the circle in number of at least three, and are made in form of the screw-orifices pressed by the stops ensuring change of the flow passage of the screw-orifices. In the input lid the flow channels are made coaxially to screw-orifices, and in the crossing them axial channels the screw-tubes are inserted, they are additional throttles, at least three pieces, with the possibility of extension in the cavity. In the screw-tubes the longitudinal slots are made, the coaxial channels are provided with blinds at the side opposite to the screw-orifices.

EFFECT: damper increases efficiency of suppression, and extends frequency range of the suppressed oscillations due to regulation of the vibration acoustic loads.

3 cl, 3 dwg