Impedance Composite 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 equipmentEmissionThe noise emitted can reach up to 130 decibels, far exceeding the noise standards set forth by our country's regulations.Industrial Noise Hygiene StandardsSpecified values (e.g., superheated steam at 1 kg/cm² pressure, when discharged 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 discharged into the atmosphere, the noise level is high due to exceeding the speed of sound, which is 340 meters per second). The noise reduction effect meets the requirements of the "Noise Hygiene Standard for Industrial Enterprises."

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 from boilers and other gas emissions for industries like oil, chemical, metallurgy, and textiles.A muffler is a device that blocks the transmission of sound while allowing air flow through.ExcludingKey measures for reducing steam exhaust noise's dynamismTo assess 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 Standard for Industrial Enterprises."

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

3. Structural performance of pipe silencers (rational dimensions, low cost, long service life, etc.).

Boiler steam in the power generation department is not only high temperature and high pressure but also has a wide frequency range of emissions. Simply relying on small hole sound absorption is insufficient. The Zuli Exhaust Sound Absorber is developed based on the composite noise reduction principle of resistance, injection, and obstruction, featuring large noise reduction capacity, wide frequency range adaptation, and targeted design (for various boiler and pressure vessel pipeline exhaust venting, including parameters such as low, medium, sub-high, high, ultra-high, subcritical, and supercritical 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. 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. After passing through the flow control, the steam enters the expansion chamber and further undergoes pressure reduction and noise suppression. After the steam is reduced in volume, it forms low-pressure steam that is emitted. During this process, the airflow is emitted through small diameter holes. After emission, 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, the noise is greatly reduced. However, secondary noise at certain frequencies still requires further attenuation. We have added a resistive sound-absorbing cotton structure to the exterior expansion, which is designed based on the frequency spectrum characteristics of the remaining noise emitted by the pressure-reducing body, to effectively absorb the residual noise. After the user installs it according to specifications, the total noise reduction should reach 30-60 decibels to meet the requirements.

Five,Selection

The muffler is meticulously designed according to the customer's emission targets and requirements. Consequently, only products that match the emission targets and parameters are eligible.Please provide the Chinese content to be translated.Excellent soundproofing effect.

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

(1) Steam emission capacity (T/h), along with pressure and temperature.

（2) Application (e.g., for boiler steam output or)SafetyValve discharge, etc.

(3) Exhaust pipe outer diameter, wall thickness.