Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy gasoline or vapour applications, which provides noise reduction in compressible fluid service for improved employee security, with no impression on course of move.
The modal attenuator is a full-bore system offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, similar to management valves or other devices. – Image: Emerson
The modal attenuator from Emerson is a full-bore gadget offering 15-decibel sound suppression to minimize back noise inside pipes produced by sources upstream, corresponding to control valves or different devices. It is installed downstream of these devices in place of a pipe spool piece, it generates no extra strain drop, and has no influence on process move.
Until now, all options have generated significant pressure drop, reduced flow, and/or launched obstructions. This has led some customers to put in acoustic insulation to pipe sections to scale back noise, however this could be expensive and cumbersome to install, and it does nothing to minimize back inner piping noise. The modal attenuator addresses these and other issues with a drop-in answer, bettering employee safety and regulatory compliance, whereas reducing the danger of injury to downstream gear due to excessive noise ranges inside to piping.
Leading เกจแรงดันสูง for the modal attenuator embrace those where upstream course of flows are changed by control valves, pressure relief valves, pumps, compressors and different gadgets that generate noise. Many of these gadgets must be put in in lengths of piping with no move restrictions downstream, and the modal attenuator works nicely 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 might be utilized in functions where particulates are suspended in course of flows, and/or the place pigging is required for cleaning and maintenance.
WhisperTube gadgets are provided in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange scores of Class one hundred fifty, 300 and 600. Pressure ratings match the flange rating sizes, and the utmost temperature is 700°F (371° C).
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