Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour functions, which presents noise reduction in compressible fluid service for improved worker safety, with no impression on process circulate.
The modal attenuator is a full-bore system providing 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, corresponding to management valves or other devices. – Image: Emerson
The modal attenuator from Emerson is a full-bore device offering 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, corresponding to control valves or different devices. It is installed downstream of these gadgets rather than a pipe spool piece, it generates no extra strain drop, and has no impression on process circulate.
Until now, all options have generated important stress drop, decreased circulate, and/or introduced obstructions. This has led some users to install acoustic insulation to pipe sections to reduce back noise, but 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 different points with a drop-in solution, enhancing employee security and regulatory compliance, while lowering the risk of injury to downstream equipment because of high noise ranges inner to piping.
Leading applications for the modal attenuator embody those the place upstream course of flows are changed by management valves, strain reduction valves, pumps, compressors and different devices that generate noise. ร้านซ่อมเครื่องวัดความดัน of those devices should be installed in lengths of piping with no circulate restrictions downstream, and the modal attenuator works properly 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 can be used in functions the place particulates are suspended in course of flows, and/or where pigging is required for cleaning and upkeep.
WhisperTube units are provided in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class one hundred fifty, 300 and 600. ร้านซ่อมเครื่องวัดความดัน match the flange rating sizes, and the maximum temperature is 700°F (371° C).
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