Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour purposes, which presents noise reduction in compressible fluid service for improved employee security, with no impact on course of circulate.
The modal attenuator is a full-bore gadget offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, such as control valves or other units. – Image: Emerson
The modal attenuator from Emerson is a full-bore device providing 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, similar to management valves or different units. It is put in downstream of those gadgets rather than a pipe spool piece, it generates no further stress drop, and has no influence on process circulate.
Until now, all options have generated significant strain drop, decreased move, and/or introduced obstructions. เกจวัดอาร์กอน has led some customers to install acoustic insulation to pipe sections to cut back noise, but this may be pricey and cumbersome to put in, and it does nothing to scale back internal piping noise. The modal attenuator addresses these and different issues with a drop-in resolution, bettering worker security and regulatory compliance, whereas lowering the risk of damage to downstream gear due to excessive noise levels inner to piping.
Leading functions for the modal attenuator embody these where upstream course of flows are changed by management valves, pressure aid valves, pumps, compressors and different units that generate noise. Many of those gadgets have to be installed in lengths of piping with no circulate 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 does not introduce an obstruction into the piping, so it can be used in purposes the place particulates are suspended in process flows, and/or where pigging is required for cleansing and maintenance.
WhisperTube devices are provided 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 ratings match the flange ranking sizes, and the maximum temperature is 700°F (371° C).