Sectioned Valve Cage Assembly for Large-Diameter Fabrication
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Solution Overview
Problem
Existing valve cages with a cylindrical, single-piece design face challenges in fabrication for large sizes due to complex and costly tooling, as well as limitations in 3D-printer build envelopes, making it difficult to produce valves with diameters exceeding 45.7 cm.
Innovation Solution
The development of circumferentially-sectioned valve cages, comprising multiple removably coupled sections with corresponding joints, allowing for assembly into a large circumference, each section being fabricated using additive manufacturing or traditional methods, enabling larger diameters without the constraints of single-piece fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a single-piece valve cage is fabricated using traditional methods or 3D printing, then the valve cage achieves structural integrity and simplicity, but the maximum diameter is limited by tooling complexity and 3D-printer build envelope
Solution Approach 1:
The valve cage is divided into multiple circumferential sections that can be fabricated separately and then assembled together. Each section can be manufactured within standard 3D-printer build envelopes, and the sections are joined using coupling mechanisms (such as bolts, welds, or interlocking features) to form the complete circumferential structure. This segmentation eliminates the build envelope limitation while maintaining structural integrity.
2Length of stationary object
If a single-piece valve cage is fabricated, then the structure is simple and joint-free, but complex and costly tooling is required for large sizes
Solution Approach 1:
By dividing the valve cage into multiple smaller sections, each section can be fabricated using standard, off-the-shelf 3D-printers or conventional machining tools, eliminating the need for custom large-format tooling. The sections are then assembled using simple coupling mechanisms, reducing overall tooling complexity while enabling larger valve cage diameters.
3Length of stationary object
If a single-piece valve cage is 3D printed, then the fabrication process is relatively simple, but the build envelope of standard 3D-printers limits the maximum diameter
Solution Approach 1:
The valve cage is segmented into multiple sections that can each be printed within the build envelope of standard 3D-printers, ensuring high dimensional accuracy for each section. The sections are then joined using coupling mechanisms with precision features (such as machined mating surfaces, keyed connections, or tapered fits) that maintain the overall dimensional accuracy and circularity of the complete valve cage.
Data Source
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AI summary
Circumferentially-sectioned valve cages are disclosed. An example apparatus comprises a plurality of cage sections collectively configured to be removably coupled together to form a valve cage having a circumference and a plurality of joints. The joints correspond in number to the cage sections and are spaced apart from one another about the circumference. Respective ones of the joints are defined by neighboring ones of the cage sections.