Axial Flow Machine Casing Cutouts for Larger Exhaust Channels
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Solution Overview
Problem
The enlargement of the exhaust gas flow channel in axial flow rotating machines leads to increased external dimensions, compromising transportability.
Innovation Solution
A casing design featuring a casing main body and connecting flanges that are cut out at specific end portions to reduce external dimensions while increasing the size of the exhaust gas flow channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the exhaust gas flow channel is enlarged to improve performance, then the flow channel size increases, but the external dimensions of the casing increase, reducing transportability
Solution Approach 1:
The patent repositions the connecting flange from a radial extension to an axial extension configuration. By moving the flange along the axial direction rather than extending radially outward, the exhaust gas flow channel can be enlarged in the radial direction without increasing the overall external dimensions of the casing in the radial direction, thus resolving the contradiction between flow channel size and external dimension.
Solution Approach 2:
The patent makes the connecting flange movable or adjustable in its position along the axial direction. This allows the flange to be repositioned to optimize the exhaust gas flow channel size while maintaining compact external dimensions, enabling dynamic adjustment between performance and transportability requirements.
2Adaptability or versatility
If the connecting flange extends radially outward to connect to other members, then connectivity is achieved, but the external dimension of the casing increases
Solution Approach 1:
The patent changes the orientation of the connecting flange from radial extension to axial extension. The flange now extends in the axial direction (parallel to the rotation axis) rather than radially outward, allowing connections to be made along the axial direction while maintaining compact radial external dimensions of the casing.
Solution Approach 2:
The patent creates an asymmetric configuration where the connecting flange is positioned asymmetrically along the axial direction, extending from one end of the casing rather than symmetrically from the center. This asymmetric placement allows for compact external dimensions while maintaining necessary connectivity functions.
Data Source
AI summary
A casing of the present disclosure includes a casing main body and a connecting flange. The casing main body covers an outer circumferential side of a rotor that rotates about an axis. The connecting flange extends from an outer circumferential portion of the casing main body toward the outer circumferential side, is provided along a circumferential direction around the axis and is connected to a member other than the connecting flange in an axial direction that is an extension direction of the axis. The connecting flange is cut out in an upper end portion or a horizontal end portion of the connecting flange.