The muffler equipment is widely used in power generation, chemical industry, metallurgy, textile and other industrial plants and mines for various types of boilers, steam exhaust, safety doors and other equipment for noise reduction and sound reduction. It has many advantages such as large noise reduction, small size, light weight, easy installation and no maintenance. Next, I will introduce the issues that must be paid attention to during the use of the muffler.
Resistance muffler has the characteristics of absorbing mid-high frequency sound, simple processing and manufacturing, etc. It is generally used for air conditioner fans, compressors, gas turbines, blowers and other fans. The resistant muffler has the characteristics of strong pertinence, remarkable effect on low-frequency sound absorption, and no sound-absorbing materials. Generally, it can only be used for exhaust muffling of small pipes, such as cars, ships, diesel engines, etc.
Impedance muffler has the characteristics of muffler frequency bandwidth and safety. It is mainly used to muffle the broadband noise with high sound level but low frequency. Such as steam turbine, deaerator, expansion vessel, small displacement safety valve exhaust steam, etc.
Small hole type muffler has low and medium frequency broadband noise reduction performance, small aperture can improve the sound absorption coefficient, low porosity can increase the width of the sound absorption band, and the depth of the orifice plate can change the position of the resonance absorption peak. The small-hole muffler has the advantages of strict design, absorption frequency bandwidth, small resistance loss, high temperature resistance and long life. It is generally used to vent the exhaust of high-pressure equipment such as boilers and compressors.
Anti-spray resistance composite muffler has the advantages of muffler frequency bandwidth, wide use range, large amount of muffler, high temperature and high pressure resistance, and is not afraid of water vapor and oil mist. It was successfully developed on the basis of the small-hole injection muffler theory of the famous Chinese acoustician Ma Dayu, and is also the latest structure exhaust muffler in China. All power plants generally choose to use it. The through-hole dissipative muffler has the advantages of smooth exhaust, high temperature resistance and strong anti-interference. Generally used for exhaust muffling of safety valves, exhaust valves, steam turbines and blowpipes.