Balancing Frame for Turbine Module Alignment
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Solution Overview
Problem
Current methods for balancing large or high-mass turbomachine modules in horizontal balancing machines are inefficient due to handling constraints, risk of damage during installation, and the need for numerous adjustments, which prolongs the balancing process and can lead to inappropriate movement of rotor relative to stator casing.
Innovation Solution
A tool with a balancing frame that includes adjustable bearings, locking mechanisms, and lifting slings to securely support and transport the module, allowing for precise alignment and immobilization during balancing, along with a calibration method using standard components to adjust the balancer for accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a large turbomachine module is manually moved to install it in the balancer, then the module can be installed for balancing, but there is a risk of damage due to inappropriate movement of the rotor relative to the stator housing
Solution Approach 1:
The patent introduces a specialized balancing frame as an intermediary device between the module and the balancer. This frame includes guide means that cooperate with guide bearings in the balancer, providing controlled guidance during installation. The frame acts as a mediator that prevents direct manual handling of the module, thereby eliminating inappropriate movements and potential damage while facilitating safe installation.
Solution Approach 2:
The balancing frame is prepared in advance with guide means positioned to align with the guide bearings in the balancer. The module is first secured to the frame before transport to the balancer. This preliminary arrangement ensures that when the module is installed, the guide means automatically guide it into the correct position, preventing damage before the balancing operation even begins.
2Productivity
If the entire rotor and stator assembly is mounted and supported directly within the balancing machine, then balancing can be performed, but handling becomes difficult for large dimensions and masses
Solution Approach 1:
The system is divided into separate functional components: the balancing frame with guide means, the balancer with guide bearings, and the module. This segmentation allows the heavy module to be handled by the frame and transport mechanism, while only the lighter frame needs to be positioned in the balancer. The module is then secured to the frame, separating the handling function from the balancing function and making the process manageable for large components.
Solution Approach 2:
The balancing frame serves as an intermediary that bridges the gap between the transport system and the balancer. It provides a interface that allows the module to be transported and then securely installed in the balancer without requiring direct handling of the entire assembly. This intermediary structure makes handling large modules feasible while maintaining balancing capability.
3Loss of time
If balancing is performed directly with the module supported by the balancing machine, then the balancing operation can be completed, but several adjustments during installation significantly increase the overall time
Solution Approach 1:
The balancing frame is pre-configured with guide means and adjustment mechanisms positioned to automatically align with the balancer's guide bearings. The module is pre-secured to the frame before installation. This preliminary preparation eliminates the need for multiple adjustments during the balancing operation itself, as the guide means ensure automatic correct positioning, significantly reducing the time required.
Solution Approach 2:
The guide means on the balancing frame and guide bearings in the balancer work together to automatically guide the module into the correct position during installation. This self-guiding mechanism eliminates the need for operators to perform multiple manual adjustments, allowing the system to self-align and reducing both the complexity of the operation and the time required.
Data Source
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AI summary
The invention relates to tool for balancing a turbine engine module (10) in a balancer, this module including at least one stator housing (14) and one rotor (16) comprising a shaft (18) of longitudinal axis A and at least one stage of blades (20) surrounded by said stator housing (14), said tool comprising at least one balancing frame (14), comprising guide bearings for the rotor (16), first and second means (30, 32) configured to be attached to said stator housing (14), third and fourth means (34, 36) provided on said frame (24), to attach said first and second means (30, 32) to said frame, fifth means for transporting the frame (24), and sixth means for supporting the frame (84, 94), provided on said frame (24) and engaging equally with both the balancer and the fifth means for transporting the frame (24).