Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy gas or vapour purposes, which offers noise discount in compressible fluid service for improved worker safety, with no impression on course of circulate.
The modal attenuator is a full-bore device providing 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, similar to control valves or different units. – Image: Emerson
The modal attenuator from Emerson is a full-bore gadget offering 15-decibel sound suppression to cut back noise inside pipes produced by sources upstream, corresponding to management valves or other units. It is installed downstream of these units instead of a pipe spool piece, it generates no additional stress drop, and has no impression on process move.
Until now, all solutions have generated important pressure drop, lowered move, and/or launched obstructions. This has led some customers to put in acoustic insulation to pipe sections to reduce noise, but this might be costly and cumbersome to install, and it does nothing to scale back inner piping noise. The modal attenuator addresses these and other issues with a drop-in answer, bettering worker security and regulatory compliance, while decreasing the danger of injury to downstream gear due to excessive noise levels inner to piping.
Leading purposes for the modal attenuator include these where upstream process flows are changed by management valves, stress reduction valves, pumps, compressors and other devices that generate noise. Many of these units should be installed in lengths of piping with no move restrictions downstream, and the modal attenuator works well in these purposes 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 functions where particulates are suspended in process flows, and/or where pigging is required for cleansing and maintenance.
เกจวัดแรงดันsumo are provided in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange scores of Class 150, 300 and 600. Pressure scores match the flange score sizes, and the utmost temperature is 700°F (371° C).
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