Eccentrically nested tube gas line silencer
US4402485A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1981 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Jun 11, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/02763
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A device for attenuating noise of fluid in non-axisymmetric turbulent flow which comprises a conduit and a plurality of parallel aligned nested tubes in said conduit. The nested tubes are of varying cross-sectional size and have approximately the same cross-sectional shape. The tubes are eccentrically aligned with respect to each other such that a lower surface of each tube is in closely spaced relationship or is in substantially line contact with a surface of an adjacent tube along their longitudinal lengths, the line contact between all of the tubes being substantially at a common line, allowing for the thickness of the tube walls. A brace extends through and interconnects the nested tubes. In one embodiment, the noise attenuating device is spaced closely downstream from a reverse flow ball valve to provide a smooth transition from the non-axisymmetric flow discharging from the valve to substantially axisymmetric flow (or fully developed pipe flow) in the conduit downstream of the valve. The front of the tubes may be configured to lie in a plan generally transverse to the conduit. In another embodiment, the front of the tubes are configured to lie in a generated surface that is c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.