Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour purposes, which provides noise reduction in compressible fluid service for improved employee security, with no influence on process move.
The modal attenuator is a full-bore gadget providing 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, such as management valves or other 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, similar to management valves or different gadgets. It is put in downstream of those gadgets rather than a pipe spool piece, it generates no further strain drop, and has no impression on course of circulate.
Until now, all options have generated important stress drop, reduced flow, and/or launched obstructions. This has led some users to install acoustic insulation to pipe sections to reduce noise, but this can be costly and cumbersome to put in, and it does nothing to reduce inside piping noise. The modal attenuator addresses these and other points with a drop-in resolution, bettering worker safety and regulatory compliance, whereas lowering the danger of injury to downstream equipment due to high noise ranges inside to piping.
Leading functions for the modal attenuator embrace these where upstream course of flows are changed by control valves, pressure relief valves, pumps, compressors and other devices that generate noise. เกจแรงดันลม of these devices should be installed in lengths of piping with no circulate restrictions downstream, and the modal attenuator works well in these applications as a result of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it can be used in applications where particulates are suspended in course of flows, and/or the place pigging is required for cleansing and upkeep.
WhisperTube gadgets are provided 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 rating sizes, and the maximum temperature is 700°F (371° C).
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