Blowpipe muffler, also known as blowpipe silencer or blow cleaning muffler, is a product developed by our company to suppress the noise generated during pipeline blowing operations.
Baffled mufflers can be considered as a component of the pipeline, which, after acoustic processing inside, can reduce the generation and transmission of noise. The design of steam pipe mufflers should not solely focus on noise reduction effects. First and foremost, they must meet the requirements of steam pipes, ensuring high flow rates, low resistance, and high momentum. Subsequently, noise reduction can be achieved through techniques such as pressure reduction, throttling, expansion, and frequency shifting.
Boiler blowdown is a quick and easy method to eliminate debris left over from pipeline construction projects: The process generates a tremendous noise of about 130-150dB. The Zhourui blowdown silencer can reduce the generation and transmission of noise, resulting in a noise attenuation of over 30-40 decibels (A-weighted) at the outlet, which corresponds to a reduction in loudness by over 60%, creating a noticeable effect subjectively. It has been tested on a 600,000-kilowatt ultra-supercritical unit at the Guodian Changzhou Power Plant, with no deformation of components or damage to welds; the noise level at a distance of 1 meter from the silencer meets the GB12348 "Industrial Enterprise Boundary Noise Standard," and the noise reduction effect is superior to similar products domestically and internationally.
Product Features
I. Product Overview
With the rapid development of the power industry and the increasing capacity of power units, it is essential to blow the main steam pipes and superheaters before the installation and operation of thermal power units. This ensures the safe and economic operation of the units. The blowing process removes large amounts of rust, slag, ferric oxide, and other debris from the pipes, which are then safely collected and discharged after being flushed multiple times by the high-temperature gas flow. During the blowing process, a powerful jet of steam is ejected from the pipe ends, generating noise levels above 160 dB(A) due to the impact and shearing of the surrounding air by the gas flow. This noise significantly disrupts the normal lives and health of residents within several square kilometers and causes environmental pollution. Additionally, the debris carried away by the gas flow poses a threat to both human and equipment safety. To address these issues and achieve the functions of noise reduction and debris collection, our company, after years of practical research, has specially developed the XG type boiler blowing muffler.
Two, Characteristics of the Structure
1. The product employs a multi-stage pressure reduction, current control, and anti-spray resistance, along with an acoustic absorption composite assembly, featuring wideband noise reduction capabilities. It further enhances the anti-spray resistance and noise reduction mechanism in its structure, achieving an ideal noise reduction effect.
Industrially-generated debris within the blown pipe is flushed and collected in the effluent section after being高速裹胁 by high-temperature steam and subjected to impact.
3. Utilizes a spray device to achieve temperature reduction and pressure relief.
4. Select different temperature and pressure-resistant materials based on varying pressure and temperature conditions.
5. Compact and highly reliable in structure.
6. Noise Reduction: ≥35dB(A)
Three: Designed according to the diameter provided by the user.
Section 4: Technical Specifications
Pressure: MPa
2. Temperature: ℃
3. Steam Emission Rate: T/H
4. Soundproofing Level: 35 dB(A)
5. Diameter: mm 6. Pressure Resistance: ≤800Pa
V. Inspection and Manufacturing Standards:
a) manufactured in accordance with the Steel Pressure Vessel Standard
b) Inspections are conducted in accordance with the GB12349-94 standard and the provisions of the DCT5047-95 "Technical Code for Construction and Acceptance of Electric Power Projects."
c) Operate in accordance with the "Steam Blowing Procedure for Power Generation Units" (1998 Edition)
d) Welding processes are carried out according to the "Welding Process Evaluation" standard.
e) Conducted in accordance with the "Quality Inspection and Evaluation Criteria for the Adjustment, Commissioning, and Quality Control of Thermal Power Engineering Projects"
f) In accordance with the "Boiler Start-up and Commissioning Manual" DT/L852-2004
Model: Temperature, Displacement, Pressure, Diameter, Pipe Silencer - One Letter
The ultra-supercritical unit steam吹管 requires high steam temperatures. The materials selected for the blowdown muffler inlet and the first stage throttle are 0Cr18Ni9. The materials for the second stage throttle and housing are 20g or 16MnR.
2. Suitable for harsh working environments, the working medium can contain water, ferrous debris (particle size up to ∮30mm), and engineering residues.
3. Noise reduction up to 20dB-40dB(A). Suitable for (blowing methods): Constant-pressure Blowing Tube, Voltage-reduction Blowing Tube, Oxygen-enriched Blowing Tube.
4. When designing 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, including 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.
