ตัววัดแรงดันน้ำ has launched the Fisher WhisperTube Modal Attenuator for noisy gas or vapour purposes, which provides noise reduction in compressible fluid service for improved employee safety, with no influence on course of flow.
The modal attenuator is a full-bore device offering 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, such as control valves or different units. – Image: Emerson
The modal attenuator from Emerson is a full-bore system providing 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, corresponding to control valves or different units. It is installed downstream of these gadgets rather than a pipe spool piece, it generates no additional stress drop, and has no impression on course of flow.
Until now, all options have generated significant strain drop, lowered move, and/or introduced obstructions. This has led some users to put in acoustic insulation to pipe sections to reduce noise, but this could be expensive and cumbersome to install, and it does nothing to scale back internal piping noise. The modal attenuator addresses these and different points with a drop-in answer, improving employee safety and regulatory compliance, whereas reducing the risk of harm to downstream equipment because of excessive noise levels inner to piping.
Leading functions for the modal attenuator embrace those the place upstream course of flows are changed by control valves, pressure relief valves, pumps, compressors and other devices that generate noise. Many of those gadgets must be put in in lengths of piping with no move 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 can be used in purposes where particulates are suspended in course of flows, and/or the place pigging is required for cleaning and maintenance.
WhisperTube units are provided 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 rating sizes, and the utmost temperature is 700°F (371° C).
Share