ตัววัดแรงดันน้ำ has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour functions, which presents noise reduction in compressible fluid service for improved employee safety, with no impact on course of move.
The modal attenuator is a full-bore system 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 reduce noise inside pipes produced by sources upstream, similar to control valves or different gadgets. It is put in downstream of these units in place of a pipe spool piece, it generates no extra stress drop, and has no influence on process flow.
Until now, all options have generated important strain drop, decreased circulate, and/or launched obstructions. This has led some users to install acoustic insulation to pipe sections to scale back noise, but this can be expensive and cumbersome to install, and it does nothing to scale back inner piping noise. The modal attenuator addresses these and different points with a drop-in resolution, improving worker safety and regulatory compliance, whereas decreasing the risk of injury to downstream tools because of excessive noise levels inside to piping.
Leading functions for the modal attenuator include those where upstream process flows are changed by management valves, pressure relief valves, pumps, compressors and other gadgets that generate noise. Many of these units should be installed in lengths of piping with no circulate restrictions downstream, and the modal attenuator works nicely in these functions because it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it may be utilized in applications the place particulates are suspended in course of flows, and/or where pigging is required for cleaning and maintenance.
WhisperTube units are supplied in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange scores of Class a hundred and fifty, 300 and 600. Pressure scores match the flange rating sizes, and the utmost temperature is 700°F (371° C).
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