Rotor Balancing Assembly With Damping Particles for Vibration Reduction
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Solution Overview
Problem
Rotors experience rotating imbalance due to centroid deviation caused by structural defects, assembly deviations, or uneven loads, leading to reduced efficiency and increased vibration and noise during operation.
Innovation Solution
A dynamic balancing apparatus is introduced, featuring structural members with recess portions and damping particles that offset inertial forces and moments of inertia, allowing the centroid to deviate and generate counter-forces to achieve balance, while the particles' movement induces friction and collision to reduce vibrations and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the rotor is designed with fixed structure and assembly, then manufacturing and assembly are simplified, but centroid deviation occurs due to structural defects, assembly deviations, or uneven loads causing rotating imbalance
Solution Approach 1:
The patent introduces movable balancing weights that can dynamically adjust their positions on the rotor surface. These weights are not fixed but can slide or move along designated paths, allowing the balancing system to adapt to centroid deviations caused by manufacturing imperfections or operational changes. This dynamic adjustment capability resolves the contradiction by enabling precise centroid positioning without requiring complex pre-manufacturing balancing procedures.
Solution Approach 2:
The balancing system incorporates self-adjusting mechanisms where the movable weights automatically migrate to optimal positions based on centrifugal forces during rotation. This self-service capability allows the rotor to automatically compensate for imbalance without external intervention or complex control systems, achieving high manufacturing precision while maintaining relatively simple device structure.
2Object-affected harmful factors
If damping particles are introduced into recess portions of structural members, then vibration and noise are reduced through friction and collision, but the device complexity increases
Solution Approach 1:
The patent utilizes recess portions (effectively porous or cavity structures) within the structural members to house damping particles. These recesses are simple geometric features integrated into the existing rotor structure, allowing damping particles to be contained without adding significant structural complexity. The particles move within these pre-defined cavities to provide vibration and noise reduction through friction and collision mechanisms.
Solution Approach 2:
The damping particles act as intermediary elements between the rotating structural members and the surrounding environment. These particles facilitate energy dissipation through their movement and interaction within the recess portions, reducing vibration and noise transmission. This intermediary approach achieves harmful factor reduction while maintaining relatively simple overall device structure, as the particles are passive elements requiring no additional control mechanisms.
3Reliability
If multiple structural members with recess portions are added to the rotor, then dynamic balancing capability is improved, but the manufacturing complexity and assembly difficulty increase
Solution Approach 1:
The balancing system is divided into modular structural members, each containing recess portions with damping particles. These segmented components can be independently manufactured and then assembled onto the rotor. This segmentation improves dynamic balancing performance by allowing precise placement of balancing elements at specific locations, while also facilitating easier manufacturing and assembly compared to creating a fully integrated complex balancing structure.
Solution Approach 2:
The damping particles are nested within the recess portions of the structural members, which themselves are attached to the rotor. This nested arrangement allows the damping functionality to be integrated within the existing structural framework without requiring separate external components. The nesting principle enables improved dynamic balancing and vibration reduction while minimizing increases in manufacturing complexity and assembly difficulty.
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 apparatus effectively maintains dynamic balance of the rotor, reduces vibration, and minimizes noise by offsetting centroid deviations and utilizing the movement of damping particles to consume energy.
Implementation Method 1
The plurality of damping particles can move in the recess portion as rotation of the rotor to induce friction and collision so as to achieve the effects of vibration reduction and noise reduction
Implementation Method 2
The plurality of damping particles can move in the recess portion as rotation of the rotor to induce friction and collision so as to achieve the effects of vibration reduction and noise reduction
Implementation Method 3
each of the structural members generates an inertial force and moment of inertia as rotation of the rotor to offset another inertial force and moment of inertia generated by centroid deviation of the rotor while rotating to achieve dynamic balance
Implementation Method 4
each of the structural members generates an inertial force and moment of inertia as rotation of the rotor to offset another inertial force and moment of inertia generated by centroid deviation of the rotor while rotating to achieve dynamic balance
Data Source
AI summary
A dynamic balancing apparatus includes a dynamic balancing assembly and a plurality of damping particles. The dynamic balancing assembly includes at least two structural members separately arranged on a rotating shaft connected to a rotor, wherein each structural member includes at least one recess portion. The plurality of damping particles are introduced into at least one recess portion of each structural member, such that a centroid of each structural member deviates from the axis. Accordingly, each structural member generates inertial force and moment of inertia as rotation of the rotor to offset another inertial force and moment of inertia generated by centroid deviation of the rotor while rotating to achieve dynamic balance. The plurality of damping particles can move in the recess portion as rotation of the rotor to induce friction and collision so as to achieve the effects of vibration reduction and noise reduction.