Product Details
I. Definition
Pipe silencers (noise dampers) are primarily used for effective noise reduction of steam emissions from thermal equipment such as boilers and steam turbines in power generation departments.。
Part II: Usage
Steam BoilerSteam related to thermal equipmentEmissionNoise emitted can reach up to 130 decibels, far exceeding the standards set forth in our country's "Industrial Noise Hygiene StandardsSpecified values (e.g., superheated steam at 1 kg/cm² pressure, when discharged into the atmosphere through an opening, can reach a speed of 570-600 meters per second. For saturated steam, the speed can also reach 470-480 meters per second. Such high-speed steam, when discharged at a speed exceeding the speed of sound (340 meters per second), generates a significant amount of noise). The noise reduction effect meets the requirements of the "Industrial Enterprise Noise Hygiene Standard."
III.Features
Pipe mufflers (noise dampeners) are primarily used for effectively muffling steam emissions from thermal equipment such as boilers and steam turbines in power generation departments. They are also widely employed in industries such as oil, chemicals, metallurgy, and textiles for boiler steam emissions and other gas muffling emissions..A muffler is a device that blocks sound transmission while allowing airflow to pass through.ExcludingSignificant measures for reducing the dynamic noise of steam exhaust. To assess the quality of an exhaust muffler, consider the following three main aspects:
The noise attenuation of the pipeline muffler meets the requirements of the "Industrial Enterprise Noise Hygiene Standard."
2. The adaptability of pipeline silencers (i.e., suitable for low to mid-frequency bandwidth and high temperature and pressure conditions).
3. Structural performance of pipe silencers (Reasonable dimensions, low cost, long lifespan, etc.).
Boiler steam in the power generation department is not only high temperature and high pressure but also has a wide frequency bandwidth. Relying solely on small hole soundproofing is insufficient. The Assistive Exhaust Sound Absorber is developed based on the composite noise reduction principle of resistance, injection, and obstruction, featuring large noise reduction capacity, wide frequency adaptability, and targeted design (for various boiler and pressure vessel pipeline exhaust outlets, including parameters such as low pressure, medium pressure, sub-high pressure, high pressure, ultra-high pressure, subcritical, and supercritical). The sound-absorbing pipe is made of stainless steel (1Cr18Ni9Ti, 12Cr1MoV) for easy manufacturing and installation.
Four,Principle
Boiler exhaust mufflers are manufactured based on the micro-perforated plate noise reduction principle. The steam exhaust from power plant boilers typically has a high flow rate, and a high flow rate has an impact on the noise reduction effect of small holes.GreatSo, we first need to control the flow. After the steam has been controlled, it enters the expansion chamber and further undergoes pressure reduction and noise elimination. After the steam has been reduced in pressure through a large volume, it forms low-pressure steam that is ejected. During this process, the airflow is ejected through small orifices. After ejection, the sound power across various frequency bands has been reduced, and the frequency of the sound pressure level has been pushed higher toAbove 20,000Hz, the noise is greatly reduced. However, secondary noise at certain frequencies still requires further attenuation. We have added a resistive acoustic cotton structure to the exterior expansion, which is designed based on the spectral characteristics of the residual noise emitted by the pressure-reducing body, to effectively absorb the remaining noise. After installation according to specifications, the total noise reduction should reach 30-60 decibels to meet the requirements.
Five,Selection
The mufflers are meticulously designed according to the user's emission targets and requirements. Consequently, only products that match the emission targets and parameters are eligible.LargeExcellent sound-dampening effect.
Therefore, when ordering a muffler, the following information must be provided:
Steam emission capacity (T/h), as well as pressure and temperature.
（2) Application Object (e.g., for boiler steam output or)SafetyValve discharges, etc.
(3) Exhaust pipe outer diameter, wall thickness.
