Low-Noise Transformer Tank With Resonance and Sound Absorption
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Solution Overview
Problem
Transformers generate noise due to vibrations of their core and winding, which are transmitted through mechanical structures and insulating fluids, necessitating effective noise reduction solutions optimized for transformer characteristics.
Innovation Solution
A soundproofing transformer design incorporating a tank with a reinforcing member, a cavity with a resonance space, a noise inlet member, and a noise reduction panel, where the noise inlet member introduces noise to the resonance space and the noise reduction panel absorbs sound waves through thermal and viscous losses, optimized for specific transformer frequencies and environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional transformer design is used, then structural simplicity is maintained, but noise transmission increases due to vibration propagation through mechanical structures and insulating fluid
Solution Approach 1:
The transformer tank is divided into multiple sections by partition walls, creating separate cavities that segment the propagation path of vibrations. This segmentation prevents noise from traveling directly across the entire tank, effectively reducing noise transmission while maintaining manageable structural complexity
Solution Approach 2:
A damping material is introduced as an intermediary substance between the core components and the tank wall. This material absorbs vibrations and converts them to heat, acting as a mediator that blocks the transmission path from the vibrating core to the tank exterior, thereby reducing noise without requiring fundamental structural changes
2Object-affected harmful factors
If noise reduction panels and resonance spaces are added, then noise absorption is improved, but device complexity increases
Solution Approach 1:
The partition walls serve multiple functions: they segment the tank for structural stability, create resonance spaces for noise reduction, and provide mounting surfaces for damping materials. This multi-functionality allows noise absorption to be achieved without adding separate dedicated components, thereby limiting the increase in device complexity
3Object-affected harmful factors
If resonance spaces are created to absorb noise, then noise reduction effectiveness is improved, but manufacturing complexity increases
Solution Approach 1:
The tank is segmented into cavities by partition walls, which creates resonance spaces as a byproduct of the segmentation. This approach allows noise reduction functionality to be achieved through the same structural division needed for other purposes, thereby limiting the increase in manufacturing complexity
4Object-affected harmful factors
If damping materials are applied to tank walls, then vibration transmission is reduced, but manufacturing complexity increases
Solution Approach 1:
Damping materials are applied beforehand to the partition walls and tank interior surfaces before final assembly. This prior cushioning approach allows vibrations to be absorbed at the source, reducing transmission to the tank exterior, while the materials can be applied as simple coatings or attached panels during the manufacturing process, thereby limiting the increase in manufacturing complexity
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 design significantly reduces noise transmission by utilizing resonance and absorption principles, enhancing noise reduction across various frequency ranges while maintaining structural integrity and adaptability to transformer specifications.
Implementation Method 1
a noise reduction panel 130 connected to at least one of the partition member 140 and the noise inlet member 120 and having a second inlet 131 provided to communicate with the acoustic absorption space 141 while facing the tank 210
Implementation Method 2
the noise reduction panel 130 absorbs sound waves through thermal and viscous losses
Implementation Method 3
a cavity 110 having a resonance space 111 and connected to the reinforcing member 220 by a coupling member 230
Data Source
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AI summary
A low-noise transformer according to the present invention may comprise: an outer container; a winding part and an iron core part which are provided inside the outer container; an insulating fluid provided inside the outer container; a reinforcing member provided outside the outer container; a cavity provided with a resonance space and connected to the reinforcing member by a coupling member; a partition wall member stacked on the cavity and provided with a sound absorbing part; a noise admitting member which is provided with a first inlet facing the outer container, and which is connected to the resonance space and configured so that noise entering from the first inlet is transmitted to the resonance space; and a noise reducing panel which is connected to at least one among the partition wall member and the noise admitting member and is provided with a second inlet facing the outer container and communicating with the sound absorbing part.