Axially Adjustable Inserted Ring for Packing Seal Refurbishment
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Solution Overview
Problem
The need for efficient refurbishment of packing rings in rotating machinery without requiring downtime, as current methods involve costly and time-consuming component removal and replacement.
Innovation Solution
The use of an inserted ring with adjustable axial width, selectively positioned and secured within grooves of the packing ring to facilitate efficient refurbishment, reducing downtime and improving operating efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the packing ring component is removed from operation for refurbishment, then the seal face can be repaired, but the downtime increases and operational costs increase
Solution Approach 1:
The packing ring is divided into multiple segments that can be independently removed and refurbished. This allows the sealing components to be accessed and repaired without removing the entire packing ring assembly from operation, thereby reducing downtime while enabling seal face refurbishment.
Solution Approach 2:
The inserted ring is positioned within a groove of the packing ring segment, creating a nested structure. This allows the inserted ring to be selectively removed and refurbished independently from the packing ring, enabling repair without complete system shutdown.
2Ease of manufacture
If the inserted ring has a fixed axial width, then the manufacturing is simpler, but the adaptability to different seal positions is reduced
Solution Approach 1:
The inserted ring is designed with an axial width that can vary within a range, allowing it to adapt to different seal positions and packing ring configurations. This dynamic dimension enables the same inserted ring design to be used across multiple applications while maintaining proper sealing geometry.
Solution Approach 2:
The axial width of the inserted ring is specified as a variable parameter within a defined range rather than a fixed value. This allows the parameter to be adjusted based on specific application requirements, providing versatility while maintaining manufacturing feasibility through standardized production methods.
Data Source
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AI summary
A turbine assembly including a turbine stationary component, which includes an inner ring and a packing segment positioned relative to the inner ring such that a steam joint is defined therebetween. The packing segment defines a groove open to the steam joint, a first seal face within the groove and opposite from the portion open to the steam j oint, and a second seal face within the groove and adjacent to the first seal face. An inserted ring includes a body having a first face, a second face adjacent to the first face, and a third face opposite from the first face. The first face is positioned in close proximity to the first seal face of the packing segment, the second face is positioned in close proximity to the second seal face of the packing segment, and the third face is positioned in close proximity to the inner ring.