Micro-perforated plate silencer

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 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 1kg/cm², when discharged into the atmosphere through an opening, can reach a velocity of 570-600 meters per second. For saturated steam, the velocity can reach 470-480 meters per second. Such high-speed steam, when discharged into the atmosphere, generates a significant amount of noise due to exceeding the speed of sound, which is 340 meters per second). The noise reduction meets the requirements of the "Noise Hygiene Standards for Industrial Enterprises."

Three.Features

Pipe mufflers (silencers) 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 silencing and other gas exhausts in industries like oil, chemicals, metallurgy, and textiles.A muffler is a device that prevents sound from propagating while allowing air flow to pass through.Excl.Significant measures for reducing the dynamic noise of steam exhaust. To assess the quality of a steam exhaust silencer, consider the following three main aspects:

The noise reduction efficiency of the pipeline muffler meets the requirements of the "Noise Sanitation Standard for Industrial Enterprises."

2. The adaptability of pipeline mufflers (i.e., to low-mid frequency bandwidth and high-temperature high-pressure conditions).

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. Relying solely on small hole sound absorption is insufficient. The Assistive Exhaust Muffler is developed based on the composite noise reduction principle of resistance, jet, and obstruction, featuring large noise reduction capacity, wide frequency adaptation, and targeted design (for various boiler and pressure vessel pipeline exhaust discharge parameters such as low pressure, medium pressure, sub-high pressure, high pressure, ultra-high pressure, sub-critical, and super-critical). The noise reduction tube is made of stainless steel (1Cr18Ni9Ti, 12Cr1MoV) and is easy to manufacture and install.

FourPrinciple

Boiler exhaust mufflers are manufactured based on the micro-perforated plate noise reduction principle. Power plant boiler steam emissions typically have high flow velocities, and high flow velocities have an impact on the noise reduction effect of small holes.LargeTherefore, we need to control the flow first, and then the steam that has been through one stage of flow control enters the expansion chamber, where it is further reduced in pressure and noise. After the steam is depressurized 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 in each frequency band has been reduced, and the frequency of the sound pressure level has been pushed higher toAbove 20,000Hz, noise is significantly reduced. However, secondary noise at certain frequencies still requires further attenuation. We have added a resistive acoustic棉 structure to the exterior expansion, designed based on the frequency spectrum characteristics of the residual noise emitted by the降压体, 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,Select Model

The mufflers are meticulously designed according to the user's emission targets and requirements. Therefore, only products that match the emission targets and parameters are eligible.Please provide the Chinese content you would like translated into American English.Excellent soundproofing effect.

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

(1) Steam emission quantity (T/h), as well as pressure and temperature.

（2) Application Object (e.g., for boiler steam capacity or)SafetyValve emissions, etc.

(3) Exhaust pipe outer diameter, wall thickness.