Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy gas or vapour applications, which offers noise discount in compressible fluid service for improved employee security, with no impact on process flow.
The modal attenuator is a full-bore system providing 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, such as control valves or other gadgets. – Image: Emerson
The modal attenuator from Emerson is a full-bore system offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, such as management valves or different units. It is put in downstream of these gadgets rather than a pipe spool piece, it generates no extra stress drop, and has no impression on course of flow.
Until now, all options have generated vital strain drop, decreased flow, and/or introduced obstructions. เกจปรับแรงดันแก๊ส has led some users to install acoustic insulation to pipe sections to reduce back noise, however this can be costly and cumbersome to put in, and it does nothing to scale back inner piping noise. The modal attenuator addresses these and other issues with a drop-in answer, enhancing employee safety and regulatory compliance, whereas reducing the risk of harm to downstream equipment as a result of excessive noise levels inside to piping.
Leading applications for the modal attenuator include those where upstream process flows are modified by management valves, pressure relief valves, pumps, compressors and other gadgets that generate noise. Many of these units should be installed in lengths of piping with no flow restrictions downstream, and the modal attenuator works well in these functions as a end result of it introduces no such restrictions.
In addition, the modal attenuator doesn’t introduce an obstruction into the piping, so it could be utilized in purposes the place particulates are suspended in process flows, and/or the place pigging is required for cleaning and upkeep.
WhisperTube units are offered in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class 150, 300 and 600. Pressure rankings match the flange ranking sizes, and the utmost temperature is 700°F (371° C).
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