Radial Securing Element for Gas Turbine Guide Vane Segment
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Solution Overview
Problem
The existing radial securing elements for guide vane segments in gas turbines are complex to manufacture due to their curved geometry in the peripheral direction, making them difficult to produce efficiently.
Innovation Solution
The radial securing element is designed with a support surface area that has a normal vector with components in the peripheral, axial, and radial directions, allowing for a simpler geometry that can be manufactured through linear grinding, and featuring two radial securing elements arranged at different distances along the peripheral direction for secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radial securing element is designed with curved geometry in the peripheral direction to achieve proper positioning, then the securing function is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent applies curvature in the radial securing element design by positioning the support surface area at a distance from the peripheral surface, creating a curved geometric relationship that enables proper radial securing while maintaining manufacturability through linear grinding processes
2Reliability
If the support surface area is positioned to provide optimal radial securing, then the securing effectiveness is improved, but the manufacturing process becomes more difficult
Solution Approach 1:
The patent resolves the manufacturing difficulty by repositioning the support surface area in a different spatial dimension - specifically, positioning it at a distance from the peripheral surface in the radial direction, which allows linear grinding processes to effectively create the required geometry while maintaining optimal securing effectiveness
3Stability of the object's composition
If two radial securing elements are arranged at different distances in the peripheral direction, then the positioning stability is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by arranging radial securing elements at different distances from the peripheral surface in the peripheral direction, creating localized variations in positioning that collectively enhance overall stability without requiring additional securing elements throughout the entire structure
Data Source
AI summary
The invention relates to a guide vane segment for a gas turbine comprising at least one radially outer shroud and one radially inner shroud, which extend along a respective arc and together form an annular segment, wherein, in the radial direction between the outer shroud and the inner shroud, a plurality of guide vanes are arranged adjacent to one another in the peripheral direction and are joined to the inner shroud and to the outer shroud in a material-bonded manner and, in particular, are joined in a one-piece manner, wherein, in an axial lengthwise direction, the outer shroud comprises an axially front end wall element and an axially rear end wall element in such a way that the outer shroud and the two end walls form a tub-like profile in lengthwise section.