Eye-opening has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour purposes, which presents noise reduction in compressible fluid service for improved worker safety, with no impression on process flow.
The modal attenuator is a full-bore gadget offering 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, such as control valves or other units. – Image: Emerson
The modal attenuator from Emerson is a full-bore system offering 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, similar to management valves or other units. It is installed downstream of these devices rather than a pipe spool piece, it generates no extra pressure drop, and has no influence on process circulate.
Until now, all solutions have generated significant pressure drop, decreased flow, and/or launched obstructions. This has led some customers to put in acoustic insulation to pipe sections to scale back noise, but this may be costly and cumbersome to put in, and it does nothing to reduce internal piping noise. No strings attached addresses these and other issues with a drop-in resolution, bettering employee security and regulatory compliance, while reducing the chance of injury to downstream tools due to high noise levels inside to piping.
Leading purposes for the modal attenuator embody those the place upstream process flows are modified by management valves, pressure reduction valves, pumps, compressors and different gadgets that generate noise. Many of these devices should be installed in lengths of piping with no move restrictions downstream, and the modal attenuator works nicely in these functions as a result of it introduces no such restrictions.
In addition, the modal attenuator doesn’t introduce an obstruction into the piping, so it might be utilized in functions the place particulates are suspended in course of 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 a hundred and fifty, 300 and 600. Pressure ratings match the flange score sizes, and the maximum temperature is 700°F (371° C).
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