Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour applications, which offers noise discount in compressible fluid service for improved employee security, with no impact on process circulate.
The modal attenuator is a full-bore device offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, similar to management valves or other gadgets. – Image: Emerson
The modal attenuator from Emerson is a full-bore device providing 15-decibel sound suppression to minimize back noise inside pipes produced by sources upstream, corresponding to control valves or different gadgets. It is installed downstream of these units instead of a pipe spool piece, it generates no extra pressure drop, and has no influence on process flow.
Until now, all options have generated significant strain drop, decreased flow, and/or launched obstructions. จำหน่ายเกจวัดแรงดัน has led some users to put in acoustic insulation to pipe sections to cut back noise, however this might be costly and cumbersome to install, and it does nothing to reduce back inside piping noise. The modal attenuator addresses these and different points with a drop-in solution, bettering worker safety and regulatory compliance, while reducing the risk of harm to downstream tools as a end result of excessive noise ranges inside to piping.
Leading purposes for the modal attenuator embody these the place upstream process flows are modified by control valves, stress reduction valves, pumps, compressors and different units that generate noise. Many of those units must be installed in lengths of piping with no flow restrictions downstream, and the modal attenuator works well in these functions as a result of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it could be utilized in purposes where particulates are suspended in course of flows, and/or where pigging is required for cleansing and maintenance.
WhisperTube units are supplied in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class a hundred and fifty, 300 and 600. Pressure rankings match the flange score sizes, and the utmost temperature is 700°F (371° C).
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