Patent ID: 11965580
Assignee: UNIVERSIDADE FEDERAL DO PARANA
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A tunable viscoelastic neutralizer to control vibrations in pipes, the tunable viscoelastic neutralizer comprising:
a cylindrical, protective, metallic housing defining three slots each configured to allow viewing into the housing;
a plurality of housing supports defining a shape that allows for adjustment of positioning between the viscoelastic neutralizer and a pipe configured to receive the viscoelastic neutralizer;
a metallic, cylindrical shaft positioned in a radial and axial center of the housing;
a plurality of metallic shaft supports in the shape of a disk, each disk defining a circular hole in a radial center of the disk, the circular hole configured to allow passage of a shaft, each of the disks further defining three threaded connections extending radially inward towards the circular hole and arranged equidistant around a circumferential surface of each of the metallic shaft supports, the threaded connections further arranged to align with the three slots of the housing, the threaded connections configured to receive screws, the threaded connections and screws configured to fix the metallic shaft supports to the housing;
a plurality of viscoelastic pieces, each of the viscoelastic pieces comprising two metallic cylinders joined by a viscoelastic material, each of the metallic cylinders having a height and a diameter, the diameter being less than the height;
an oscillating, metallic, cylindrical mass defining an axially aligned, circular hole configured to center and to allow passage of the shaft therethrough, the mass defining grooves on both axial faces, the grooves configured to receive at least a portion of each of the viscoelastic pieces; and
disk-shaped, viscoelastic piece supports each defining an axially aligned, circular hole sized to allow deformation of the shaft caused by the oscillation of the mass, each of the viscoelastic piece supports further defining grooves configured to receive at least a portion of each of the viscoelastic pieces.