Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy gasoline or vapour purposes, which presents noise reduction in compressible fluid service for improved worker security, with no impression on course of flow.
pressure gauge 2.5 นิ้ว is a full-bore system offering 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, similar to control valves or other units. – Image: Emerson
The modal attenuator from Emerson is a full-bore gadget offering 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, corresponding to management valves or different units. It is put in downstream of those devices instead of a pipe spool piece, it generates no further pressure drop, and has no impact on process flow.
Until now, all solutions have generated significant strain drop, decreased flow, and/or launched obstructions. This has led some users to install acoustic insulation to pipe sections to reduce back noise, but this may be pricey and cumbersome to put in, and it does nothing to reduce internal piping noise. The modal attenuator addresses these and other points with a drop-in solution, enhancing worker safety and regulatory compliance, whereas lowering the danger of injury to downstream gear because of excessive noise levels inner to piping.
Leading functions for the modal attenuator embrace these where upstream process flows are modified by control valves, stress reduction valves, pumps, compressors and other units that generate noise. Many of these units should be installed in lengths of piping with no move restrictions downstream, and the modal attenuator works nicely in these purposes as a outcome of it introduces no such restrictions.
In addition, the modal attenuator doesn’t introduce an obstruction into the piping, so it can be used in applications where particulates are suspended in process flows, and/or the place pigging is required for cleansing and maintenance.
WhisperTube devices are offered in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange rankings of Class a hundred and fifty, 300 and 600. Pressure ratings match the flange ranking sizes, and the maximum temperature is 700°F (371° C).