Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy gasoline or vapour applications, which presents noise reduction in compressible fluid service for improved worker safety, with no impression on course of move.
The modal attenuator is a full-bore device providing 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, similar to control valves or different devices. – Image: Emerson
The modal attenuator from Emerson is a full-bore system offering 15-decibel sound suppression to minimize back noise inside pipes produced by sources upstream, similar to control valves or different devices. It is put in downstream of these devices rather than a pipe spool piece, it generates no additional strain drop, and has no impression on course of circulate.
Until now, all options have generated vital stress drop, reduced move, and/or introduced obstructions. This has led some users to put in acoustic insulation to pipe sections to scale back noise, however this may be pricey and cumbersome to install, and it does nothing to scale back inner piping noise. The modal attenuator addresses these and different issues with a drop-in resolution, bettering employee safety and regulatory compliance, whereas decreasing the danger of injury to downstream tools due to high noise ranges inside to piping.
Leading purposes for the modal attenuator embody those the place upstream course of flows are changed by management valves, strain aid valves, pumps, compressors and other gadgets that generate noise. เกจ์วัดแรงดันลม of these units have to be put in in lengths of piping with no flow restrictions downstream, and the modal attenuator works nicely in these applications because it introduces no such restrictions.
In addition, the modal attenuator doesn’t introduce an obstruction into the piping, so it can be utilized in purposes where particulates are suspended in process flows, and/or where pigging is required for cleansing and upkeep.
WhisperTube devices are offered in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class a hundred and fifty, 300 and 600. Pressure ratings match the flange rating sizes, and the maximum temperature is 700°F (371° C).
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