เกจวัดแรงดันpcp has launched the Fisher WhisperTube Modal Attenuator for noisy gas or vapour applications, which presents noise reduction in compressible fluid service for improved worker security, with no impression on process circulate.
The modal attenuator is a full-bore gadget providing 15-decibel sound suppression to cut 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 system providing 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 further strain drop, and has no impression on course of flow.
Until now, all options have generated important strain drop, lowered circulate, and/or launched obstructions. This has led some users to put in acoustic insulation to pipe sections to reduce noise, but this might be costly and cumbersome to put in, and it does nothing to reduce inner piping noise. The modal attenuator addresses these and other points with a drop-in answer, bettering worker security and regulatory compliance, whereas reducing the danger of damage to downstream gear due to high noise levels inside to piping.
Leading purposes for the modal attenuator embrace these the place upstream process flows are changed by control valves, pressure relief valves, pumps, compressors and different devices that generate noise. Many of those units have to be installed in lengths of piping with no flow restrictions downstream, and the modal attenuator works properly in these purposes as a end result of it introduces no such restrictions.
In addition, the modal attenuator doesn’t introduce an obstruction into the piping, so it may be used in purposes the place particulates are suspended in course of flows, and/or where pigging is required for cleaning and maintenance.
WhisperTube gadgets are offered in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange scores of Class 150, 300 and 600. Pressure rankings match the flange score sizes, and the utmost temperature is 700°F (371° C).