Venting silencer

Introduction to Venting Silencer:

A venting muffler is designed and developed to suppress noise production during factory pipeline venting and exhaust.

There are many types of mufflers, but when it comes to their sound reduction mechanisms, they can be divided into six main types: vent mufflers, resistance mufflers, impedance composite mufflers, micro perforated plate mufflers, small hole mufflers, and existing mufflers. The vent mufflers are one of the more versatile types. The main types of exhaust silencers used are gas (excluding steam) exhaust silencers and steam exhaust silencers. A gas (excluding steam) vent silencer is a device that can eliminate noise generated by sound transmission, allow gas and airflow to pass through, and prevent environmental noise from polluting humans and animals and plants. It is composed of different body types, pore diffusion principles, and metal sound-absorbing materials for exhaust and venting. Mainly used to reduce the steam noise generated by boilers, steam turbines, and steam pipelines, as well as the interference noise generated by oxygen compressors, nitrogen compressors, air compressors, etc. during the discharge of pressurized gases, so that the environmental noise of enterprises meets the national 銀行卡Industrial Enterprise Noise Hygiene Standards銀行卡, and the sound attenuation level meets 25-35 decibels (A) - which is widely used in chemical enterprises and thermal power plants;

The venting silencer is relatively compact in structure, and the silencer cylinder is made of stainless steel, which is not easy to corrode. It has a large amount of noise reduction, low steel consumption, small volume, light weight, high strength, and is easy to install and release; Silencers are fixed and can meet the requirements of pipeline thermal displacement. At the same time, they can absorb the vertical and horizontal thermal displacement of the exhaust pipe, ensuring the safety of the hot working of the exhaust pipe. They are a type of noise reduction equipment for controlling exhaust and venting noise. The installation of silencers does not affect the discharge volume of the safety valve and the jumping of the safety valve, and can perform quantitative acoustic calculations.

Calculation of exhaust muffler:

The noise reduction through throttling and pressure reduction is calculated using the following formula: Z=r+jwm=jctg (WD/c) Equation -: ρ-- Air concentration (kg/cm3); C - Air sound velocity (m/s); D - cavity - (mm); M - relative sound -; R - relative sound resistance; W - angular frequency, W=2 π f (where f is the frequency); According to the above calculation, the noise reduction of this eliminator after throttling, pressure reduction, and small hole injection is 16.4+13.2=29.6dB. Therefore, the emission noise of the eliminator is 110 dB minus the noise reduction of the eliminator. The noise generated by the main steam emission noise of the urea CO2 compressor after being eliminated by the eliminator is 80.4dB, which is less than the environmental protection regulations of the country. Therefore, the design of this eliminator meets the needs of the site.

Model, specifications, and parameters of the exhaust muffler:

Hoisting and transportation of exhaust muffler:

1. During transportation, the exhaust muffler should be securely padded and tied to prevent damage during transportation;

2. When lifting and loading and unloading the exhaust muffler, it is necessary to follow the relevant markings and select the correct lifting equipment or rope to ensure the integrity of the packaging box and equipment, as well as personal safety.

3. If the equipment is not installed after unpacking, inspection, and verification, it should be packaged and properly stored. When storing outdoors, it should be raised by 200-250mm and covered with rainproof cloth. Even if stored for a short period of time at the installation site, it is not allowed to store the muffler in a place with mud, sand or other debris to prevent blockage of the muffler.

Pipeline silencer

Pipeline silencers are mainly used for silencing the steam emissions of thermal equipment such as boilers and steam turbines in the power generation department. The noise reduction capacity of the pipeline muffler can meet the requirements of the Industrial Enterprise Noise Hygiene Standard.

Blower silencer

The blower muffler is mainly suitable for reducing the intake and exhaust noise of Roots series and axial flow series fans. The blower muffler can also be used for noise reduction of exhaust pipes and other high-pressure fans, with a noise reduction amount of 10-20dB (A) and a pressure loss of less than 500Pa.

Centrifugal fan silencer

The centrifugal fan muffler is developed based on the principle of soundproof sheet noise reduction. This type of muffler has good acoustic performance and good aerodynamic performance; Reasonable in structure and easy to install, it is a honeycomb type muffler with high wind resistance. It adopts a chamber resistant adhesive straight pipe channel and a cross shaped sound-absorbing plate form.

Blow pipe silencer

Blow pipe silencers can be used to eliminate the noise generated by boilers and pipelines during blowing. Box type blow pipe silencers are divided into upper exhaust and partial exhaust, with the upper exhaust type being a box structure and the partial exhaust type being a circular structure.

Steam silencer

Steam silencers are used for a wide range of steam emission objects in thermal equipment. Various specifications of boiler steam silencers can be designed and manufactured based on the user's extracted steam output, steam pressure, and connection size.

Fan silencer

Safety valve silencer

The TA type exhaust safety valve silencer is suitable for the safety valves of pressure devices such as PCV/ERV safety valves (power release valves), drum safety valves, superheater safety valves, and reheater safety valves in power plant boilers. The safety valve muffler adopts the principle of spray impedance composite noise reduction, which replaces the smaller diameter control hole with a large hole expansion.

Small hole injection silencer

A small hole injection muffler is also known as a diffuser. It sprays gas from high-pressure vessels through several layers of small orifice plates to reduce noise. To prevent clogging of small holes and the difficulty of processing small holes, the diameter of small holes can be selected within the range of 1-3 millimeters (which should meet the condition of b>=8d)

Combination fan silencer

The combination type fan muffler (combination type composite muffler) mainly has a small hole type muffler inserted inside the fan muffler to achieve the desired effect, and the combination mode can be selected as needed. Welcome - Customers come to design and manufacture, or contact us to help you design.

Chimney silencer

Chimney noise disturbing the public, how to - chimney muffler, using chimney muffler - chimney noise management. Chimney noise, such as in chemical plants and cement plants, has high chimneys and high air vents. The noise from the air vents presents a low-frequency buzzing sound, which affects a considerable range of the surrounding environment.