Composite Muffler

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 for thermal equipmentEmissionThe noise 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, 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. At such high velocities, when discharged into the atmosphere, the noise level is high due to exceeding the speed of sound, which is 340 meters/second). The noise reduction meets the requirements of the "Industrial Enterprise Noise Hygiene Standard."

Three,Features

Pipe mufflers (noise dampers) 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 suppression of other gases in industries such as oil, chemical, metallurgy, and textiles..A muffler is a device that blocks sound from spreading while allowing airflow to pass through; it's a quieting device.ExcludingSignificant measures for reducing the dynamic noise of steam exhaust. To evaluate the quality of an exhaust muffler, consider the following three main aspects:

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., suitable for low to mid-frequency spectrum, wide bandwidth, and high temperature and 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 frequency bandwidth; simply relying on small hole soundproofing is insufficient. The Aulift exhaust sound suppressor is developed based on the composite noise reduction principle of resistance, spray, and impedance, featuring large noise reduction capacity, wide frequency adaptability, and targeted design (for various boiler and pressure vessel pipeline exhaust discharge parameters such as low, medium, sub-high, high, ultra-high, subcritical, and supercritical pressures), with the advantages of easy manufacturing and installation of the silencer tube using stainless steel (1Cr18Ni9Ti, 12Cr1MoV).

Four,Principle

Boiler exhaust mufflers are manufactured based on the micro-perforated plate noise reduction principle. 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.So, we first need to control the flow. The steam that has undergone once-flow control is then fed into the expansion chamber, where it is further reduced in pressure and noise. 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-diameter orifices. After ejection, the sound power in various frequency bands is reduced, while 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 spectral 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.

Five,Select a Model

The muffler is 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 mufflers, the following information must be provided:

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

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

(3) Steam exhaust pipe outer diameter, wall thickness.