ตัววัดแรงดันน้ำ has launched the Fisher WhisperTube Modal Attenuator for noisy gasoline or vapour applications, which provides noise discount in compressible fluid service for improved employee security, with no impression on process circulate.
The modal attenuator is a full-bore gadget offering 15-decibel sound suppression to reduce back noise inside pipes produced by sources upstream, corresponding to control valves or different devices. – Image: Emerson
The modal attenuator from Emerson is a full-bore device offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, such as management valves or different devices. It is installed downstream of those gadgets in place of a pipe spool piece, it generates no additional pressure drop, and has no impact on course of flow.
Until now, all options have generated important strain drop, decreased flow, and/or launched obstructions. This has led some customers to put in acoustic insulation to pipe sections to minimize back noise, however this can be pricey and cumbersome to install, and it does nothing to minimize back internal piping noise. The modal attenuator addresses these and different issues with a drop-in resolution, bettering worker security and regulatory compliance, whereas decreasing the chance of damage to downstream gear as a end result of excessive noise levels internal to piping.
Leading functions for the modal attenuator embrace these where upstream process flows are changed by management valves, stress relief valves, pumps, compressors and other devices that generate noise. Many of those devices must be installed in lengths of piping with no flow restrictions downstream, and the modal attenuator works properly in these purposes because it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it might be used in applications where particulates are suspended in course of flows, and/or where pigging is required for cleaning and maintenance.
WhisperTube units are offered 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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