Flow Cell Gasket Structure for Stable Inlet-Outlet Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing flow cell units for fluorescence detectors experience communication failure between pipes and the flow cell over time due to gasket deformation, causing the inlet and outlet holes to close, which disrupts the liquid flow and optical measurement.
Innovation Solution
Incorporating a deformation absorbing structure, such as a through hole, between the inlet and outlet communication holes in the gasket to absorb the stress-induced deformation, ensuring that the pipes maintain communication with the flow cell by providing an escape path for the resin, thus reducing displacement and maintaining seal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gasket is made plastically deformable to secure sealability, then the sealability is improved, but the communication holes displace outward over time
Solution Approach 1:
The gasket exhibits different mechanical properties in different regions: the pressing portion is designed to be plastically deformable to achieve sealability, while the communication hole portions are designed to maintain dimensional stability and resist displacement. This local differentiation of material properties or structural characteristics allows both sealability and position stability to be achieved simultaneously.
2Strength
If the joint member applies stress to the gasket to secure connection, then the connection strength is improved, but the gasket deforms causing communication failure
Solution Approach 1:
The gasket structure is segmented into a pressing portion that absorbs the connection stress through controlled deformation, and communication hole portions that remain stable. This segmentation allows the joint member to apply sufficient stress for strong connection while preventing communication hole displacement that would cause communication failure.
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 deformation absorbing structure effectively reduces the outward displacement of the communication holes, ensuring continuous communication between the pipes and the flow cell, thereby maintaining reliable liquid flow and optical measurement performance.
Implementation Method 1
the gasket is plastically deformed by stress from the joint member pushed to the flow cell side
Data Source
AI summary
A gasket sandwiched between a flow cell and a joint member has, in a main flat surface, an inlet communication hole for communicating between an inlet hole of the flow cell and an inlet flow path of the joint member and an outlet communication hole for communicating between an outlet hole of the flow cell and an outlet flow path of the joint member. Furthermore, a deformation absorbing structure for absorbing deformation of the gasket is provided between the inlet communication hole and the outlet communication hole in the main flat surface of the gasket.