Product Details
I. Definition
Pipe silencers (mufflers) are primarily used for effective noise reduction of steam emissions from thermal equipment such as boilers and steam turbines in power generation departments.。
II. Usage
Steam BoilerSteam related to thermal equipmentEmissionThe emitted noise can reach up to 130 decibels, far exceeding the noise standards set forth by our country's regulations.Industrial Noise Hygiene StandardsRegulated values (for example: superheated steam at a pressure of 1 kg/cm², when expelled into the atmosphere through an opening, can reach a velocity of 570-600 meters per second. For saturated steam, the velocity can also reach 470-480 meters per second. At such high velocities, when expelled into the atmosphere, the noise level is high due to exceeding the speed of sound, which is 340 meters per second). The noise reduction meets the requirements of the "Industrial Enterprise Noise Hygiene Standards."
Section 3:Features
Pipe silencers (mufflers) are primarily used for effectively silencing steam emissions from thermal equipment such as boilers and steam turbines in power generation departments. They are also widely employed in the steam emissions and noise reduction of gases in industries such as oil, chemical, metallurgy, and textile, among others..A muffler is a device that blocks sound transmission while allowing airflow to pass through.ExcludingSignificant measures for reducing the dynamic noise of steam exhaustTo evaluate the quality of an exhaust muffler, the following three aspects are primarily considered:
The noise reduction of the pipeline silencer meets the requirements of the "Noise Hygiene Standards for Industrial Enterprises."
2. The adaptability of pipe silencers (i.e., to low and mid-frequency bandwidths and high temperatures and pressures).
3. Structural performance of pipeline silencers (Reasonable dimensions, low cost, long service life, etc.).
The steam from the boiler in the power generation department is not only high temperature and high pressure but also has a wide emission frequency range. Simply using small holes for sound absorption is not effective. The Assist Exhaust Muffler is developed based on the composite noise reduction principle of resistance, jet, and absorption, featuring large noise reduction capacity, wide frequency adaptation, and targeted design (for various boilers and pressure vessel pipelines with parameters such as low pressure, medium pressure, sub-high pressure, high pressure, ultra-high pressure, sub-critical, and super-critical, etc.). The muffler is made of stainless steel (1Cr18Ni9Ti, 12Cr1MoV) for easy installation.
FourPrinciple
Boiler exhaust mufflers are manufactured based on the principle of micro-perforated plate noise reduction. Power plant boiler steam exhaust typically has a high flow rate, and a high flow rate can affect the noise reduction of small holes.Please provide the Chinese content you would like translated into American English.So, we first need to control the flow. The steam that has been controlled once enters the expansion chamber, where it is further depressurized and sound dampened. After undergoing large-volume depressurization, the steam forms low-pressure steam that is ejected. During this process, the airflow is ejected through small-diameter orifices. After ejection, the sound power across various frequency bands is reduced, and the frequency of the sound pressure level is pushed higher toAbove 20000Hz, noise is significantly 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 frequency spectrum characteristics of the remaining noise emitted by the降压体 (decompression unit), to effectively absorb the residual noise. After installation as per requirements, the total noise reduction should reach 30-60 decibels to meet the specifications.
Five.Select options
The mufflers are carefully designed according to the user's emission target and requirements. Consequently, only products that match the emission target and parameters are eligible.LargeExcellent sound absorption effect.
Therefore, when ordering a muffler, the following information must be provided:
(1) Steam emission capacity (T/h), as well as pressure and temperature.
（2) Applicable Users (e.g., for boiler steam capacity or)SafetyValve exhausts, etc.
(3) Exhaust pipe outer diameter, wall thickness.
