Safety valve exhaust silencer

Safety Valve Steam Baffle Overview:

The working principle of the safety valve exhaust muffler is to reduce the high-pressure and high-temperature steam, as well as low-pressure steam, by once expanding and lowering the pressure within the muffler. It then enters a secondary pressure-reducing chamber, where it undergoes further expansion and pressure reduction to form low or ultra-low pressure steam, which is then ejected. After that, it passes through a composite noise-absorbing cover of a combined multi-material structure outside the pressure-reducing chamber, which further reduces the noise before being released into the atmosphere. This type of industrial noise reduction equipment boasts high safety factor, large noise reduction value, compact equipment dimensions, light weight, and easy installation.

The筒安全阀排气消声器 is suitable for the safety valves of boiler drums, superheater safety valves, reheater safety valves, and power plant boiler PCV/ERV safety valves (power release valves) for pressure vessels. Its steam exhaust should not only avoid excessive noise but also allow the steam flow to be discharged smoothly without affecting the discharge volume, actuation, and reset of the safety valve. For this reason, the commonly used multi-stage throttling and small-hole injection noise reduction methods are not suitable. This restriction has always been a design challenge for safety valve silencers and is also the reason for the poor noise reduction effect of safety door silencers. The TB-type safety valve exhaust silencer used for safety valves employs a spray impedance composite noise reduction principle, where a large-diameter expansion replaces the smaller diameter flow control holes, structurally enhancing both the resistive and reactive noise reduction mechanisms, achieving a higher safety coefficient noise reduction effect.

Other types of exhaust gas vent silencers:

1. Ignition Exhaust Muffler for Noise Reduction in Steam Boilers and Similar Equipment

The boiler exhaust silencer integrates the highly rational noise reduction principle of the TA-type exhaust (gas) silencer. High-pressure steam is controlled once inside the silencer and then enters the pressure-reducing chamber. After expanding and reducing pressure in a large volume, it forms low-pressure steam and is ejected. During this process, a portion of the steam's internal energy is converted into sound energy of a certain frequency. Although the noise power is greatly reduced, the exhaust noise often remains above the standard due to deviations from the design values and other reasons. To address this, a composite noise and sound absorption hood with a multi-material structure is designed outside the pressure-reducing chamber. The composite hood is tailored to the spectral characteristics of the remaining noise emitted by the pressure-reducing chamber, effectively absorbing the residual noise. After installation according to specifications, the total noise reduction can reach 36 to 45 decibels.

2. TD Type Low-Pressure Steam Silencer for Steam Exhaust Noise Reduction in Various Low-Temperature, Low-Pressure Thermal Equipment

A significant number of low-pressure boilers with pressures of 0.13 Mpa or less are in use across various industrial and mining enterprises. The thermal power system also features a substantial number of low-pressure thermal devices, including back-pressure turbines, deaerators, auxiliary exhaust blowers, steam turbine oil pumps, continuous blowdown from boilers, and periodic blowdowns, etc. These equipment are equipped with noise suppressors that are lightweight in structure and easy to install, as per the requirements of the exhaust piping. For different noise reduction applications, specialized TDb-type back-pressure turbine exhaust noise suppressors, TDy-type deaerator noise suppressors, and other series of noise reduction products are designed to meet customer requirements.

3. CGX Type Pipe Blasting Silencer for Boiler Commissioning Blowing and Industrial Pipeline Installation/Repair, Designed for Gas Discharge and Dross Elimination Noise Reduction

CGX type pipeline flushing silencer, designed to reduce the noise of power plant boiler flushing

One: Purpose and Advantages of Safety Valve Muffler

Boiler safety valve exhaust silencers are primarily used for effectively silencing steam exhaust from safety valves and exhaust valves in power plants, chemical industries, and steel mills. Generally, they are categorized into boiler drum safety valve exhaust silencers, superheater safety valve exhaust silencers, and reheater safety valve exhaust silencers.

For boiler safety valves and exhaust valves, it can be regarded as a component of the pipeline. After acoustic treatment internally, it can reduce the generation and transmission of noise, achieving a noise reduction of 20 to 30 decibels (A-weighted) at the outlet, with a corresponding reduction in loudness of more than 50%, resulting in a noticeable subjective effect. When designing an exhaust muffler for safety valves, the following three aspects should be considered:

The noise reduction level of the muffler meets the requirements of the "Noise Hygiene Standards for Industrial Enterprises."

2. The muffler should not only avoid excessive noise but also ensure smooth exhaust of air flow.

3. The muffler's structural performance (including reasonable dimensions, low cost, and long service life).

Manufacturers often use common multi-stage throttling and small-hole injection silencing methods, which can lead to instantaneous steam discharge blockage and explosion破裂 accidents. Therefore, the silencer of the safety door has always been a design challenge, and is also a reason for the poor silencing effect of the safety door silencer.

Section 2: Principle of Cylinder Safety Valve Exhaust Muffler

Our safety door muffler also utilizes the noise reduction principle of resistance, spray, and obstruction. It replaces small-hole flow control with large-hole expansion and flow control, ensuring the smooth exhaust of the safety door in its structure. This further strengthens the resistive noise reduction principle, allowing steam sound waves to enter the countless small holes of the porous sound-absorbing material. It excites the vibration of the molecular structure of the porous material, converting sound energy into heat to overcome frictional resistance and viscosity, thereby achieving the ideal noise reduction effect and ensuring the smooth exhaust of steam.

Section 3: Selection and Ordering of Steam Exhaust Muffler for Safety Valves

TB type exhaust muffler, TB indicating a noise-suppressing muffler with a sound-absorbing cover (composite type), filled with sound-absorbing cotton. Gas enters from the bottom inlet and exits from the top. Due to the presence of the sound-absorbing cotton filling, it is suitable for pressures up to 6.4 Mpa; otherwise, the filling may be blown out. The shell is made of carbon steel, suitable for temperatures up to 300 degrees.

TB-1.6-10000/57 Model Meaning: TB stands for Compound Exhaust Muffler, 57 indicates the outer diameter of the interface is 57mm, and 1000 represents the exhaust volume is 1000M3/H.

After searching for a silencer online for countless times, we suddenly turned back and found that Lianyungang Xunbao Silencer Co., Ltd. is a manufacturer specializing in silencers. High-quality products come from a partner you can trust, and we are very much looking forward to collaborating with you.

Our silencers are meticulously designed to meet the specific emissions targets and requirements of the user. Therefore, to achieve optimal noise reduction, it is essential that the product matches the emissions target and parameters. When ordering a silencer, the following information must be provided:

(1) Safety valve steam flow rate (T/h), lift pressure, temperature.

(2) Exhaust pipe outer diameter, wall thickness;

Copper safety valve exhaust silencer

Material: Stainless Steel

Safeguard Pressure Vessel Exhaust Muffler
Material: Shell in carbon steel, inner parts in stainless steel