Cooling Panel Segment With Integrated Distribution Channels
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Solution Overview
Problem
Existing cooling systems for turbomachine casing structures are inefficient and require multiple parts and complex mounting processes, which can lead to mechanical stress and increased assembly time.
Innovation Solution
A panel segment for a cooling panel comprising an inner and outer sheet made of sheet metal, with integrated circumferential cooling channels and a circumferential distribution channel, eliminating the need for separate pipes and reducing mechanical stress through flexible or sliding connections between segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate circumferential pipes are mounted onto panel segments for cooling fluid distribution, then the cooling system can be assembled, but the number of parts increases and mounting complexity increases
Solution Approach 1:
The circumferential distribution channel is integrated directly into the panel segment structure, merging the function of separate distribution pipes with the panel segment itself. This eliminates the need for additional mounting operations and reduces the total number of parts while maintaining the cooling fluid distribution function.
Solution Approach 2:
The panel segment is designed to perform multiple functions: it provides structural support, defines cooling channels, and integrates the circumferential distribution channel for cooling fluid supply. This multi-functionality reduces the need for separate specialized components.
2Stability of the object's composition
If rigid connections are used between panel segments, then structural stability is achieved, but mechanical stress increases during assembly and operation
Solution Approach 1:
The connection between panel segments utilizes flexible sealing elements or sliding interfaces that allow for thermal expansion and mechanical movement while maintaining the seal and structural integrity. This flexibility reduces mechanical stress compared to rigid fixed connections.
3Manufacturing precision
If multiple separate components are used for cooling channels and distribution, then manufacturing precision can be controlled, but assembly time increases
Solution Approach 1:
The cooling channels and circumferential distribution channel are formed as integrated features of the panel segment, eliminating the need for separate assembly steps for mounting distribution pipes and connecting channels. This significantly reduces assembly time while maintaining manufacturing precision through monolithic or pre-integrated construction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces the number of parts and assembly complexity, while providing efficient impingement cooling and reducing mechanical stress, thus enhancing the durability and efficiency of the turbomachine casing structure.
Implementation Method 1
a cooling fluid, e.g. compressed air, can be fed through the cooling channels and be ejected via the cooling holes radially inwards. The ejected cooling fluid can provide an impingement cooling to the casing structure arranged radially inside of the panel segment or cooling panel.
Data Source
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AI summary
The present application relates to a panel segment (10) for a cooling panel for a casing structure of a turbomachine, comprising: an inner sheet (14) made of sheet metal; and an outer sheet (15) made of sheet metal; the outer sheet being arranged radially outside of the inner sheet and being materially connected to the inner sheet, wherein circumferential cooling channels (25) are defined between the inner sheet and the outer sheet, each circumferential cooling channel being provided with a row of cooling holes (45), configured to eject cooling fluid radially inwards, the panel segment further defining an axial distributor volume, configured to supply the circumferential cooling channels with the cooling fluid, wherein the panel segment further defines a circumferential distribution channel, which is in fluid communication with the axial distributor volume, the circumferential distribution channel extending from a first end (11) to a second end (12) of the panel segment (10), the first end and the second end lying circumferentially opposite, wherein the circumferential distribution channel has a first interface (13.1) at the first end a second interface at the second end, the first interface and the second interface (13.2) configured to be connected to a respective neighboring panel segment.