Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour functions, which presents noise reduction in compressible fluid service for improved employee security, with no influence on process move.
The modal attenuator is a full-bore gadget offering 15-decibel sound suppression to cut 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 system providing 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, corresponding to control valves or other gadgets. It is installed downstream of these gadgets in place of a pipe spool piece, it generates no extra pressure drop, and has no influence on course of circulate.
Until now, all solutions have generated significant pressure drop, lowered move, and/or introduced obstructions. This has led some customers to put in acoustic insulation to pipe sections to scale back noise, however this may be expensive and cumbersome to install, and it does nothing to reduce internal piping noise. The modal attenuator addresses these and other points with a drop-in solution, improving worker security and regulatory compliance, while decreasing the risk of harm to downstream tools as a outcome of excessive noise ranges inside to piping.
Leading applications for the modal attenuator embrace those the place upstream process flows are changed by management valves, strain reduction valves, pumps, compressors and different devices that generate noise. เพรสเชอร์เกจน้ำ of these devices have to be installed in lengths of piping with no flow restrictions downstream, and the modal attenuator works properly in these functions as a result of it introduces no such restrictions.
In addition, the modal attenuator doesn’t introduce an obstruction into the piping, so it can be utilized in purposes the place particulates are suspended in course of flows, and/or the place pigging is required for cleaning and upkeep.
WhisperTube devices are offered in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class 150, 300 and 600. Pressure rankings match the flange score sizes, and the maximum temperature is 700°F (371° C).
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