Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour purposes, which provides noise reduction in compressible fluid service for improved worker safety, with no impression on course of move.
The modal attenuator 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. – Image: Emerson
The modal attenuator from Emerson is a full-bore gadget providing 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, corresponding to management valves or other devices. It is put in downstream of those gadgets in place of a pipe spool piece, it generates no further strain drop, and has no impression on course of circulate.
Until now, all options have generated vital stress drop, decreased circulate, and/or introduced obstructions. This has led some customers to put in acoustic insulation to pipe sections to scale back noise, but this might be expensive and cumbersome to install, and it does nothing to reduce inside piping noise. The modal attenuator addresses these and other issues with a drop-in answer, enhancing worker safety and regulatory compliance, whereas reducing the risk of injury to downstream tools due to high noise levels inner to piping.
Leading เกจ์ลมsumo for the modal attenuator include those the place upstream process flows are changed by management valves, stress reduction valves, pumps, compressors and other units that generate noise. Many of those units should be installed in lengths of piping with no circulate restrictions downstream, and the modal attenuator works well in these functions as a outcome of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it may be utilized in applications the place particulates are suspended in process flows, and/or the place pigging is required for cleansing and upkeep.
WhisperTube units are provided in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class 150, 300 and 600. Pressure scores match the flange ranking sizes, and the utmost temperature is 700°F (371° C).
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