Resistive silencer

Product Details

I. Definition

Pipe muffler (silencer) products are mainly used for effective noise reduction of steam exhaust 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 regulations issued by our country.Industrial Enterprise Noise Hygiene StandardsSpecified values (e.g., superheated steam at 1 kg/cm², when discharged into the atmosphere through an opening, can reach a velocity of 570-600 meters/second. For saturated steam, the velocity can also reach 470-480 meters/second. Such high-velocity steam, when discharged into the atmosphere, generates a significant noise level due to exceeding the speed of sound, which is 340 meters/second). The noise reduction meets the requirements of the "Noise Hygiene Standards for Industrial Enterprises."

Three,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 other gas exhaust silencing in industries such as oil, chemical, metallurgy, and textile..A muffler is a device that blocks sound transmission while allowing air flow 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 mainly considered:

The sound attenuation of the pipeline muffler meets the requirements of the "Noise Hygiene Standards for Industrial Enterprises."

2. The adaptability of pipe silencers (i.e., their ability to accommodate a wide frequency spectrum of low to medium frequencies and high temperatures and pressures).

3. Structural performance of pipeline 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 range. Simply using small hole noise reduction is insufficient. The Zuli Exhaust Steam Muffler is developed based on the composite noise reduction principle of resistance, spray, and impedance. It features large noise reduction capacity, a wide frequency range adaptation, and targeted design (for various boiler, pressure vessel pipeline exhaust venting, including parameters such as low, medium, sub-high, high, ultra-high, sub-critical, and super-critical pressures). The noise reduction tube is made of stainless steel (1Cr18Ni9Ti, 12Cr1MoV) and is easy to manufacture and install.

FourPrinciple

Boiler exhaust silencers are manufactured based on the micro-perforated plate noise reduction principle. The steam emissions from power plant boilers typically have high flow rates, and high flow rates can affect the noise reduction of small holes.Please provide the Chinese content to be translated.Therefore, we need to control the flow first, and then the steam that has undergone flow control enters the expansion chamber, where it is further reduced in pressure and noise. After the steam is 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 in each frequency band is reduced, and the frequency of the sound pressure level is elevated toAbove 20,000Hz, the 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 pressure-reducing unit, to effectively absorb the residual noise. After installation as required by the user, the total noise reduction should reach 30-60 decibels, meeting 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.Please provide the Chinese content that you would like translated into American English.Excellent sound-dampening effect.

Therefore, when ordering mufflers, the following information must be provided:

(1) Steam emissions: quantity (T/h), pressure, and temperature.

（2) Applicable Usage (e.g., for boiler steam output or)SafetyValve discharges, etc.

(3) Steam pipe outer diameter and wall thickness.