Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour applications, which provides noise discount in compressible fluid service for improved employee safety, with no impact on course of move.
The modal attenuator is a full-bore device offering 15-decibel sound suppression to reduce back noise inside pipes produced by sources upstream, corresponding to management valves or different units. – Image: Emerson
The modal attenuator from Emerson is a full-bore gadget providing 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, corresponding to control valves or other gadgets. It is installed downstream of those units in place of a pipe spool piece, it generates no additional pressure drop, and has no influence on process flow.
Until now, all solutions have generated vital pressure drop, decreased circulate, and/or launched obstructions. เกจแรงดัน has led some users to put in acoustic insulation to pipe sections to reduce noise, however this can be pricey and cumbersome to install, and it does nothing to reduce inner piping noise. The modal attenuator addresses these and different issues with a drop-in resolution, improving worker safety and regulatory compliance, whereas decreasing the chance of injury to downstream equipment because of high noise levels inside to piping.
Leading purposes for the modal attenuator embrace those where upstream process flows are changed by management valves, strain relief valves, pumps, compressors and different gadgets that generate noise. Many of these devices should be put in in lengths of piping with no circulate restrictions downstream, and the modal attenuator works nicely in these applications 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 process flows, and/or the place pigging is required for cleansing and maintenance.
WhisperTube gadgets are offered in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange rankings of Class 150, 300 and 600. Pressure rankings match the flange rating sizes, and the maximum temperature is 700°F (371° C).
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