Inlet Guide Vane Alignment Apparatus for Turbines
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Solution Overview
Problem
Conventional methods for aligning inlet guide vanes in turbines are time-consuming, costly, and inaccurate, relying on independent angle measurements that require manual adjustment and are labor-intensive during installation and maintenance.
Innovation Solution
An alignment apparatus comprising a tool body with positioning blocks and displaceable alignment pieces, such as eccentric pins or triangular brackets, that are manually adjusted to ensure the inlet guide vanes are parallel to the turbine axis, allowing for simultaneous alignment of multiple vanes and secure locking using magnetic couplings and spring members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional independent angle measurement method is used for IGV alignment, then each IGV can be aligned individually, but the alignment process becomes time-consuming and labor-intensive
Solution Approach 1:
The patent combines multiple alignment functions into a single integrated apparatus. The alignment tool includes a tool body with multiple alignment pieces (first, second, and third alignment pieces) that can simultaneously align multiple IGVs, replacing the conventional method of aligning each IGV separately with independent measurements. This merging of functions directly addresses the contradiction by maintaining measurement precision while significantly improving productivity.
Solution Approach 2:
The alignment apparatus is designed as a universal tool that can align multiple types of IGVs (stationary and rotating) and perform multiple alignment operations simultaneously. The tool body contains various alignment pieces that can be positioned at different locations around the turbine axis, making the single apparatus capable of performing the work of multiple separate measurement devices, thus improving efficiency without sacrificing accuracy.
2Manufacturing precision
If manual adjustment and measurement is performed for each IGV, then alignment can be achieved, but the process becomes costly and time-consuming
Solution Approach 1:
The alignment apparatus is pre-configured with multiple alignment pieces positioned at predetermined locations around the tool body. These alignment pieces are prepared in advance with the correct angular relationships to the turbine axis, eliminating the need for time-consuming measurements and adjustments during the actual alignment process. The preliminary preparation of the tool's geometry allows for rapid, accurate alignment of multiple IGVs simultaneously.
Solution Approach 2:
The alignment apparatus is designed to be self-aligning through its fixed geometric relationships. The alignment pieces are rigidly mounted on the tool body at precise angles, allowing the tool itself to provide the alignment reference without requiring external measurement devices or manual calculations for each IGV. This self-service capability reduces both time and cost while maintaining precision.
3Measurement precision
If independent angle measurement device is used for each IGV, then individual alignment is possible, but the device complexity and cost increase
Solution Approach 1:
The patent merges the functionality of multiple independent angle measurement devices into a single integrated alignment apparatus. Instead of requiring separate measurement tools for each IGV, the unified tool body with multiple alignment pieces provides all necessary measurement and alignment functions in one device, reducing overall system complexity while maintaining the precision of individual measurements.
Solution Approach 2:
The alignment apparatus is designed as a universal tool that replaces multiple specialized measurement devices. The single apparatus can align both stationary and rotating IGVs, perform measurements at multiple locations, and provide reference angles for different IGV types, thereby reducing device complexity and cost while maintaining measurement precision through its multi-functional design.
Data Source
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AI summary
An alignment apparatus for aligning inlet guide vanes in a turbine having a turbine axis includes a tool body, a positioning block secured to the tool body, and a plurality of alignment pieces secured to the tool body. The positioning block may be affixed to the tool body such that when the positioning block is engaged with a leading edge of one of the inlet guide vanes, at least a portion of the alignment pieces is parallel to the turbine axis. The alignment pieces may be manually displaceable from the OFF position to the ON position into engagement with the inlet guide vanes to align one or more of the inlet guide vanes.