Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy gasoline or vapour functions, which provides noise reduction in compressible fluid service for improved worker security, with no impact on course of flow.
The modal attenuator is a full-bore device offering 15-decibel sound suppression to reduce back noise inside pipes produced by sources upstream, such as control valves or different gadgets. – Image: Emerson
The modal attenuator from Emerson is a full-bore device providing 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, such as control valves or other units. เพรสเชอร์เกจ is put in downstream of these units rather than a pipe spool piece, it generates no further stress drop, and has no impression on course of circulate.
Until now, all solutions have generated significant strain drop, lowered flow, and/or introduced obstructions. This has led some customers to install acoustic insulation to pipe sections to cut back noise, however this may be costly and cumbersome to install, and it does nothing to scale back inner piping noise. The modal attenuator addresses these and other points with a drop-in answer, improving employee safety and regulatory compliance, whereas reducing the danger of harm to downstream equipment due to high noise ranges internal to piping.
Leading purposes for the modal attenuator embody these the place upstream course of flows are changed by control valves, stress relief valves, pumps, compressors and other units that generate noise. Many of those units should be installed in lengths of piping with no flow 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 doesn’t introduce an obstruction into the piping, so it can be utilized in functions where particulates are suspended in process flows, and/or the place pigging is required for cleansing and maintenance.
WhisperTube devices are supplied in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange rankings of Class one hundred fifty, 300 and 600. Pressure scores match the flange rating sizes, and the maximum temperature is 700°F (371° C).
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