Double-walled integrated flanged joint
By using a double-wall integrated flange joint made of a single material, combined with air gap and weld design, the problem of easy thermal mechanical fatigue of flange joints in the prior art is solved, achieving higher durability and insulation effect, improving engine thermal efficiency and lightweight design.
CN116291837BActive Publication Date: 2026-07-07CUMMINS INC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CUMMINS INC
- Filing Date
- 2019-05-15
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Existing flange joints are susceptible to thermomechanical fatigue or cracking in high-temperature environments, and their multi-component structure increases manufacturing complexity and cost.
Method used
The double-wall integrated flange joint, made from a single material, is manufactured using 3D printing technology to reduce stress concentration at the weld points by creating an air gap between the inner wall and the collar and positioning the weld away from high-stress areas.
Benefits of technology
It improves the fatigue life of flange joints, reduces the risk of thermal stress on welds, enhances insulation, and improves engine thermal efficiency and lightweight design.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116291837B_ABST
Abstract
The present invention relates to a double-walled integrated flanged joint. The integrated flanged joint comprises an inner wall having at least one inlet and at least one outlet, a flange extending radially outward from the inlet of the inner wall, and a collar extending from the flange in the direction of the inner wall and surrounding at least a portion of the inner wall. The integrated flanged joint is formed from a single piece of material. Furthermore, the collar at least partially defines an outer wall, and a volume between the collar and the inner wall at least partially defines an air gap.
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