Petroleo Brasileiro has developed a dynamic viscoelastic vibration neutralizer for industrial pipes. The patent describes a tunable viscoelastic neutralizer with a metallic housing, shaft supports, viscoelastic pieces, and an oscillating mass to control vibrations. The design allows for easy adjustment and installation in pipe systems. GlobalData’s report on Petroleo Brasileiro gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Petroleo Brasileiro, Microscale biofuel reactors was a key innovation area identified from patents. Petroleo Brasileiro's grant share as of March 2024 was 44%. Grant share is based on the ratio of number of grants to total number of patents.
Tunable viscoelastic neutralizer for controlling pipe vibrations
A recently granted patent (Publication Number: US11965580B2) discloses a tunable viscoelastic neutralizer designed to control vibrations in pipes. The neutralizer comprises a cylindrical metallic housing with viewing slots, housing supports for adjusting positioning, a metallic shaft at the center, metallic shaft supports with threaded connections, viscoelastic pieces made of metallic cylinders joined by viscoelastic material, an oscillating metallic mass with grooves for the viscoelastic pieces, and disk-shaped viscoelastic piece supports with grooves.
The patent also includes a method for controlling radial vibrations in pipes using the viscoelastic neutralizer. The method involves receiving radial vibrations within a specified frequency range, transferring the vibrations to the mass through the housing components, vibrating the mass in a radial direction, generating shear deformations in the viscoelastic pieces, and dissipating and redistributing the radial vibration of the pipe in response to the shear deformation. The patent claims the adjustability of the number of viscoelastic pieces, the symmetrical arrangement of the pieces around the oscillating mass, and the role of housing supports in forming a junction between the neutralizer and the pipe. Additionally, the patent highlights the tunability of the neutralizer through adjustable shaft supports to set a response frequency.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
