The Blowpipe Silencer is an industrial equipment designed to suppress noise during the steam pipeline cleaning process. It falls under the category of noise suppression products and is primarily used in pipeline systems in the power, chemical, and metallurgical industries. Its core function is to address the issue of high-intensity noise (usually around 130-150 dB) during high-temperature and high-pressure steam blowing operations by reducing noise propagation and ensuring cleaning efficiency.
The equipment incorporates multi-stage pressure reduction, frequency expansion, and anti-sound reflection and absorption technologies, achieving noise reduction up to 30-40 decibels (A-weighted). It is also compatible with various blowing pipe methods, including voltage stabilization, reduction, and oxygen addition. The main materials used are 0Cr18Ni9 stainless steel and 20g/16MnR steel, with the structural design adhering to the GB150-1998 standard. It has the capability to withstand debris impact, exhaust reaction force, and thermal expansion thrust. Some models are integrated with multi-level noise reduction structures, such as silencers and sponge boards, or utilize removable and sealed connection designs for enhanced reusability. The manufacturing process employs X-ray flaw detection welding technology to ensure long-term stability of operation.
Usage
Baffled silencers, which can be viewed as a component of a pipeline, undergo acoustic processing internally to reduce noise generation and transmission. The design of steam pipe silencers cannot solely focus on noise reduction; it must first meet the requirements of the steam pipes, ensuring the highest velocity, minimum resistance, and maximum momentum. Subsequently, noise reduction is achieved through pressure reduction, throttling, expansion, and frequency shifting technologies.
Boiler blowing is the quickest and simplest method to eliminate residual engineering materials from pipeline debris. During the blowing process, it generates a tremendous noise of around 130-150dB. Blower silencers can reduce the generation and transmission of noise, achieving an attenuation of the exhaust noise to over 30-40 decibels (A-weighted), correspondingly reducing the loudness by more than 60%, resulting in a noticeable subjective effect.
Performance Features
1. To meet the requirement of high steam temperature during supercritical unit steam blowing, the material selected for the inlet of the blowing tube silencer and the first stage throttle sleeve is 0Cr18Ni9, while the second stage throttle sleeve and shell are made of 20g or 16MnR.
2. Suitable for harsh working environments, capable of handling water and ferrous debris (particle size up to ∮30mm) in the working medium, as well as engineering remnants.
3. Noise reduction up to 20dB-40dB(A). Suitable for blowpipe methods: stable pressure blowpipe, voltage reduction blowpipe, and oxygen enrichment blowpipe.
4. During design and manufacturing, the technical specifications of GB150-1998 "Steel Pressure Vessels" must be followed. To ensure the safe operation of silencers, structural measures and requirements must be established and met for strength, differential expansion, displacement, drainage, corrosion allowance, and protection against damage from solid debris. The manufacturing quality of silencers should be supervised and inspected by professionals from the design and supervisory authorities.