Blow off/Vent silencers

Vent / blow-off silencers are used to reduce the noise produced by the industrials goods (Structure born noise and Air born noise), when venting of pressurized and high velocity gas to the atmosphere, specially, steam, air and nitrogen. It is a combination of absorptive and reactive type silencer to attenuate high and low frequency noise. The fluid enters through the diffuser (reactive section) and pressure is killed in this zone as per customer requirement and depending on process condition. Then fluid passes through the annular space between the acoustic packing where the sound energy is absorbed. In vent silencer diffuser pipe is the only pressure part and it will be designed as pressure vessel.

Features Benefits:

INLET DIFFUSER – a self-supporting bottom inlet provides energy dissipation and modification of the noise spectrum for easier attenuation. It also provides the back pressure required for optimum valve performance and size.

PLENUM SECTION – minimizes shell noise radiation and noise leakage. It slows the flow velocity prior for entry into the Acoustic Tube module.

ACOUSTIC TUBE MODULE – its multiple flow tubes surrounded by acoustic packing absorb and attenuate the high frequency acoustic energy as modified by the inlet diffuser.

OPTIONAL FEATURES –flanged inlet connection, weather hood, lug or leg supports for vertical mounting, saddle supports for horizontal mounting, bird screen, drain muffler, and special material & finishes for high temperature and/or corrosive applications.

Applications:

• Boiler Startup and Shut Down Systems
• System Purge
• Safety Relief Valves
• Control Valves
• Centrifugal Compressors
• Steam Ejectors and Vents
• Blow down Systems