Product Details
I. Definition
Pipe mufflers (noise suppressors) are primarily used for effectively muffling steam emissions from thermal equipment such as boilers and steam turbines in power generation departments.。
II. Application
Steam boilerSteam related to thermal equipmentEmissionNoise emitted can reach up to 130 decibels, far exceeding the standards set forth in our country's "Industrial Enterprise Noise Hygiene StandardsSpecified values (e.g., superheated steam at 1 kg/cm² pressure, when expelled into the atmosphere through an opening, can achieve a speed of 570-600 meters/second. For saturated steam, the speed can reach 470-480 meters/second. At such high speeds, when expelled into the atmosphere, the noise level is high due to exceeding the speed of sound, which is 340 meters/second). The noise reduction effect meets the requirements of the "Industrial Enterprise Noise Hygiene Standard."
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 prevents sound from spreading while allowing air flow through.Excl.Significant measures for reducing the dynamic noise of steam exhaustTo assess the quality of an exhaust muffler, consider the following three main aspects:
The noise reduction of the pipeline muffler meets the requirements of the "Noise Hygiene Standards for Industrial Enterprises."
2. The adaptability of pipeline silencers (i.e., to low-mid frequency bandwidth and high-temperature, high-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 emission frequency band. Simply relying on small-hole soundproofing is insufficient. The Zuli Exhaust Steam Soundproofing Device is developed based on the composite noise reduction principle of resistance, injection, and damping. It features large noise reduction capacity, wide frequency band adaptability, and targeted design (for various boiler and pressure vessel pipeline exhaust venting parameters such as low-pressure, medium-pressure, sub-high-pressure, high-pressure, ultra-high-pressure, subcritical, and supercritical). The noise reduction tube is made of stainless steel (1Cr18Ni9Ti, 12Cr1MoV) for easy manufacturing and installation.
Four,Principle
Boiler exhaust silencers are manufactured based on the micro-perforated plate noise reduction principle. Power plant boiler steam emissions generally have high flow velocities, and high velocities have an impact on the noise reduction of small holes.Please provide the Chinese content to be translated.Therefore, we need to control the flow first, after which the steam enters the expansion chamber and is further de-pressurized and sound attenuated. After the steam is de-pressurized in 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 20000Hz, 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 frequency spectrum characteristics of the remaining noise emitted by the voltage reducer, to effectively absorb the residual noise. After installation as required by the user, the total noise reduction should reach 30-60 decibels to meet the specifications.
V.Selection
The mufflers are meticulously designed according to the customers' emission targets and requirements. Consequently, only products that match the emission targets and parameters are eligible.LargeExcellent sound-dampening effect.
Therefore, when ordering the muffler, the following information must be provided:
(1) Steam emission quantity (T/h), as well as pressure and temperature.
（2) Applicable Objects (e.g., for boiler steam capacity or)SafetyValve emissions, etc.
(3) Exhaust pipe outer diameter, wall thickness.
