Rotor Balancing Group for Fluid Rotary Machines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current balancing systems for fluid rotary machines require additional masses to be applied and repositioned on rotor components, leading to undesired torques and instability, especially during on-site modifications and varying rotation regimes.
Innovation Solution
A balancing group comprising a conical stopper and cylindrical bush assembly that can be inserted into the rotor shaft, allowing for precise positioning of balancing masses to minimize unbalance while maintaining stability and reducing additional torque, using a hydraulic jack assembly for easy installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional masses are applied on rotor components to balance the rotor at low rotation regimes, then balancing accuracy is improved, but additional torques are generated and stability deteriorates
Solution Approach 1:
The balancing system is segmented into modular components: removable balancing masses, positioning elements, and mounting structures. This allows the balancing masses to be independently positioned and removed without affecting the rotor structure, reducing unwanted torques while maintaining balancing accuracy.
Solution Approach 2:
The balancing masses are made dynamically adjustable through removable and repositionable design. This enables the balancing configuration to be optimized for different rotation regimes, improving stability across varying operational conditions while maintaining the required balancing precision.
2Adaptability or versatility
If balancing masses are repositioned during set-up phases to adapt to different rotation regimes, then adaptability is improved, but time consumption and complexity increase
Solution Approach 1:
Multiple balancing masses are pre-positioned at predetermined locations on the rotor during manufacturing. This preliminary arrangement allows for rapid selection and adjustment during set-up phases, reducing the time required to adapt to different rotation regimes while maintaining versatility.
Solution Approach 2:
The balancing masses are designed as separate, modular units that can be independently selected and positioned. This segmentation enables quick reconfiguration without complex assembly procedures, reducing set-up time while preserving adaptability to various operational conditions.
3Adaptability or versatility
If balancing masses are removed and repositioned during on-site modifications, then adaptability is improved, but operational stability and precision are compromised
Solution Approach 1:
The balancing system uses modular, pre-positioned masses with dedicated mounting locations. This segmentation allows individual masses to be removed and repositioned during on-site modifications without affecting the structural integrity or balancing stability of the rotor.
Solution Approach 2:
The balancing masses are designed with universal mounting features that allow them to be installed and removed at multiple predetermined locations. This multi-functionality enables on-site adaptations while maintaining reliable and stable balancing performance across different configurations.
Data Source
AI summary
A balancing group (22) is described for the rotor of a fluid rotary machine (10), wherein the rotor is of the type comprising at least one shaft (16) equipped with an internal pass-through hole (20) which develops along the longitudinal axis (A) of the shaft (16). The balancing group (22) includes at least a first inner element (24) and at least a second outer element (26), the first inner element (24) being suitable for being engaged by interference, in the direction of the longitudinal axis (A), inside the second outer element (26). The balancing group (22) thus formed is suitable for being inserted, in the direction of the longitudinal axis (A), inside the pass-through hole (20) of the shaft (16).