Split Brush Seal Curvature Adaptation
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Solution Overview
Problem
The existing split type brush seal devices require multiple jigs for assembling due to the need for precise curvature matching between brush seal pieces and attached portions in rotary machines, which complicates the assembly process and limits design flexibility.
Innovation Solution
A split type brush seal device with arc-shaped plates and biasing means, such as fastening members, that forcibly approximate the curvature of the plates to the attached portion, reducing the need for multiple jigs and allowing for flexible curvature adaptation during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple jigs are used for assembling brush seal pieces to different curvatures, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The plate is designed with changeable curvature parameters, allowing it to adapt to different curvatures of attachment members. The plate can be bent or deformed to match the required curvature, eliminating the need for multiple fixed-curvature jigs while maintaining manufacturing precision
Solution Approach 2:
A single jig structure is designed to handle multiple curvatures by incorporating adjustable or flexible components. This universal jig can be reconfigured for different curvature requirements, replacing the need for multiple dedicated jigs and reducing device complexity
2Manufacturing precision
If multiple jigs are required for different curvatures, then manufacturing precision is maintained, but ease of manufacture deteriorates
Solution Approach 1:
The plate's curvature parameter is made variable, allowing it to be adjusted during assembly to match different attachment member curvatures. This eliminates the need for multiple precision-matched jigs, simplifying the manufacturing process while maintaining alignment accuracy
Solution Approach 2:
The plate structure itself provides the curvature adaptation capability through its inherent flexibility or adjustable design features. The plate can be manually bent or deformed to match the required curvature without requiring complex external jigging equipment, making assembly simpler
3Manufacturing precision
If fixed curvature plates are used, then manufacturing precision is ensured, but adaptability decreases
Solution Approach 1:
The plate is designed with variable curvature parameters that can be adjusted within a certain range. This allows the same plate design to adapt to different curvature requirements while maintaining manufacturing precision through controlled deformation or adjustment mechanisms
Solution Approach 2:
The plate transitions from a static fixed-curvature component to a dynamic adjustable-curvature component. The plate can be deformed, bent, or reconfigured during assembly to match different curvatures, providing adaptability while maintaining precision through controlled dynamic adjustment
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
The present invention is to provide a split type brush seal device, brush seal pieces, and a method of assembling a split type brush seal device in which the brush seal pieces can be applied to an attached portion having an acceptable curvature. In a split type brush seal device 10 including plural brush seal pieces 30, 30 having bundled wire rods 41, and attached members 20, 20 in which the plural brush seal pieces are attached to attached portions 21, 21 in the circumferential direction, each of the brush seal pieces 30 has a plate 40 of arc shape to which the bundled wire rods 41 are fixed, and the split type brush seal device further includes biasing means 60 that forcibly cause a curvature of the plate 40 to approximate to a curvature of the attached portion 21.