Chromatograph Pipe With Thin Middle Section
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Solution Overview
Problem
Chromatograph pipes with large outer diameters have low flexibility and are prone to permanent deformation when bent, making them difficult to handle effectively.
Innovation Solution
A pipe design featuring a thin portion with a smaller outer diameter and thick portions at the ends, integrally formed from a single metallic material, allowing for improved flexibility and durability without the need for bonding, and manufactured through etching a cylindrical member to create the desired dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pipe with large outer diameter is used to fit the connection port, then the pipe can be connected to units, but the flexibility of the pipe is low and it is prone to permanent deformation
Solution Approach 1:
The pipe applies local quality by creating a thin portion with smaller outer diameter in the middle section while maintaining thick portions at both ends with larger outer diameter. This allows the thin middle portion to be flexible and bendable for easy handling, while the thick end portions maintain structural strength for reliable connection to units with connection ports.
2Reliability
If a pipe with large outer diameter is used, then it fits the connection port, but once bent the pipe is permanently deformed
Solution Approach 1:
The pipe structure divides the pipe into different zones with different properties: thick end portions maintain shape stability for reliable connection, while the thin middle portion allows controlled bending without permanent deformation. This local differentiation resolves the contradiction between connection reliability and shape stability.
Solution Approach 2:
The pipe is segmented into thick end portions and a thin middle portion, each serving different functions. The segmentation allows the pipe to have both rigid connection ends and a flexible intermediate section that can bend and return to its original shape.
3Reliability
If a pipe with large outer diameter is used, then it connects units, but the flexibility is low making it difficult to arrange along any path
Solution Approach 1:
By creating a thin portion with smaller outer diameter in the middle of the pipe while maintaining thick portions at the ends, the pipe achieves high flexibility in the thin section for easy arrangement along any path, while the thick end portions ensure reliable connection to units.
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 pipe can be arranged along any path without permanent deformation, enhancing handleability and durability while maintaining fluid flow, all at a low cost.
Implementation Method 1
reducing a thickness of the cylindrical member except for the end portion by a predetermined amount by etching the cylindrical member
Data Source
AI summary
A pipe for a chromatograph includes a thin portion and a thick portion. The thin portion extends in one direction. The thick portion is located at an end portion of the thin portion in the one direction. The thin portion and the thick portion are integrally formed of a single member. The outer diameter of the thin portion is smaller than the outer diameter of the thick portion. The pipe is used in a chromatograph.