Plastic Perforated Silencer Panel for Gas Turbine Noise Reduction
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Solution Overview
Problem
Conventional silencer panels for industrial machines, particularly in gas turbine systems, are heavy, costly, and difficult to manufacture due to the use of stainless steel enclosures that require extensive welding, making them cumbersome and expensive to custom-fit for specific duct sizes.
Innovation Solution
The use of a silencer panel system with a plastic, perforated side wall enclosure, which reduces weight, fabrication costs, and eliminates the need for extensive welding, while providing enhanced acoustic performance through increased perforation area and improved sound attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stainless steel enclosures are used for silencer panels, then strength and durability are improved, but weight and manufacturing cost increase significantly
Solution Approach 1:
The patent changes the material parameter from stainless steel to plastic, fundamentally altering the weight and manufacturing characteristics while maintaining functional performance through design adaptations
Solution Approach 2:
The invention uses composite construction with plastic enclosures combined with acoustic absorbing materials, creating a composite structure that achieves both weight reduction and acoustic functionality
2Strength
If stainless steel enclosures are used for silencer panels, then structural integrity is improved, but manufacturing complexity and cost increase due to welding requirements
Solution Approach 1:
The patent replaces the mechanical welding system with a plastic joining system, eliminating the complex welding process while maintaining structural integrity through plastic-specific joining methods
Solution Approach 2:
The invention adopts plastic enclosures that are easier and cheaper to manufacture, accepting that they may have different lifecycle characteristics compared to stainless steel, thereby reducing overall system cost
3Object-affected harmful factors
If stainless steel perforated sheets are used, then acoustic performance is achieved, but weight and manufacturing cost increase
Solution Approach 1:
The patent changes the material parameter from metal to plastic, reducing weight while maintaining acoustic performance through optimized perforation design and material properties
4Object-affected harmful factors
If custom fitting for specific duct sizes is required, then acoustic performance is optimized, but manufacturing time and cost increase
Solution Approach 1:
The patent creates enclosures with universal characteristics that can be adapted to different duct sizes more easily, reducing the need for completely custom-manufactured panels for each application
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The plastic perforated side wall system offers improved noise reduction with approximately 2 dB or more attenuation, reduced weight, lower costs, and simplified manufacturing, making it easier to handle and install compared to traditional steel systems.
Implementation Method 1
The plastic perforated side wall propagate the sound waves through the perforations into the acoustic absorbing material
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A silencer panel 104 includes an acoustic absorbing material 110; and an enclosure 112 surrounding the acoustic absorbing material. The enclosure includes at least one plastic, perforated side wall 14.