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Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy gas or vapour functions, which offers noise reduction in compressible fluid service for improved employee security, with no impression on course of circulate.
เกจวัดแรงดันน้ำไทวัสดุ is a full-bore system providing 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, similar to management valves or different gadgets. – Image: Emerson
The modal attenuator from Emerson is a full-bore device offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, corresponding to management valves or other gadgets. It is put in downstream of those gadgets in place of a pipe spool piece, it generates no additional pressure drop, and has no impression on course of flow.
Until now, all options have generated significant stress drop, decreased flow, and/or introduced obstructions. This has led some users to put in acoustic insulation to pipe sections to scale back noise, but this can be costly and cumbersome to install, and it does nothing to scale back internal piping noise. The modal attenuator addresses these and other points with a drop-in answer, enhancing worker safety and regulatory compliance, whereas lowering the risk of harm to downstream tools as a outcome of high noise ranges inner to piping.
Leading purposes for the modal attenuator include these the place upstream process flows are modified by control valves, stress relief valves, pumps, compressors and other units that generate noise. Many of these gadgets have to be put in in lengths of piping with no circulate restrictions downstream, and the modal attenuator works nicely in these purposes as a end result of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it may be used in functions the place particulates are suspended in process flows, and/or where pigging is required for cleansing and upkeep.
WhisperTube devices 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. Pressure rankings match the flange rating sizes, and the utmost temperature is 700°F (371° C).
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