The blow-off silencers are widely used in noise reduction for domestic 300MW-1000MW large-scale power generation units. Before the thermal power generation units are put into operation after completion of installation or maintenance, it is necessary to perform steam blow-off to clear the superheater to ensure the safe and economic operation of the equipment. To thoroughly remove debris from the piping system, the blow-off process may be repeated dozens, even hundreds of times, and can last for several days or longer.

Product Overview

The exhaust silencers for blowdown pipes are widely used in noise reduction for domestic 300MW-1000MW large-scale power generation units. Before the thermal power generation units are put into operation after installation or maintenance, to ensure safe and economic operation of the equipment, steam blowdown must be performed to clear superheaters. To completely remove debris from the piping system, the blowdown process may require dozens, even hundreds of cycles, and can last for several days or longer. During blowdown, the intense steam turbulence produces a high-level aerodynamic noise as high-speed gas is ejected from the pipe ends, impacting and shearing the surrounding static air, causing severe gas disturbances near the nozzle and resulting in noise levels up to 160dB(A) and above. The airodynamic noise generated is greater with larger unit capacity, and the jet noise is a continuous, mid-high-frequency broadband noise, which severely affects the lives, work, and study of residents within several square kilometers, particularly posing serious risks to human health and well-being. To eliminate the severe noise hazards caused by unit blowdown, it is necessary to install blowdown silencers at the ends of the blowdown pipes. The boiler blowdown silencer is an effective noise reduction device for mitigating the severe noise hazards caused by unit blowdown.

The boiler blowing pipe system is complex, making it a challenging task to determine steam parameters within the system. Additionally, the high steam velocity inside the pipes, combined with the presence of large amounts of rust, slag, and other industrial debris mixed with the high-speed steam flow, requires a highly sophisticated design for the silencer to achieve noise reduction. After years of research and practical manufacturing experience, our company's boiler blowing pipe silencer has become a mature product, fully capable of withstanding the violent impact of various industrial debris and expelling them smoothly. It operates normally under harsh working conditions without affecting the steam flow rate of the blowing pipe.