Primary Gasket Central Lip Openings for Stable Cylinder Fluid Flow
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Solution Overview
Problem
Existing primary gaskets in cylinder assemblies for hydraulic and electrohydraulic systems are prone to excessive bending and rotation, leading to fluid passage obstruction and compromised operation due to overstressing in the fluid communication configuration.
Innovation Solution
A primary gasket design featuring a central lip with radial openings and a continuous abutment portion to ensure stable fluid passage while preventing bending, maintaining structural integrity and reducing resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the primary gasket is designed with a three-lip structure (inner lip, central lip, and outer lip) to enable fluid isolation and communication functions, then the gasket can fulfill its sealing and pressure control functions, but the central lip and outer lip can bend excessively when overstressed in the fluid communication configuration, leading to rotation of the primary gasket in the primary housing
Solution Approach 1:
The central lip is segmented by introducing radial openings that divide the lip structure into multiple sections. This segmentation reduces the bending moment and prevents excessive deformation while maintaining the fluid passage function. The radial openings allow the central lip to flex locally without causing rotation of the entire gasket.
Solution Approach 2:
The primary gasket is constructed using composite material structure combining a resilient base material with reinforcement elements. This composite construction enhances the structural integrity and resistance to bending forces, preventing gasket rotation while maintaining sealing effectiveness.
2Strength
If the central lip is made thicker to prevent bending and rotation, then the structural integrity and stability are improved, but the resistance to fluid passage through the central lip increases
Solution Approach 1:
The central lip is divided into multiple sections by radial openings, which reduces the effective bending length and moment of inertia required for structural integrity. This segmentation allows the use of thinner lip sections that offer less resistance to fluid passage while maintaining sufficient strength to prevent excessive bending and gasket rotation.
Solution Approach 2:
The central lip incorporates radial openings that create a controlled porous structure. This porous design reduces fluid passage resistance by providing multiple flow paths through the lip, while the overall structure maintains structural integrity through the distributed opening pattern and reinforcement.
Data Source
AI summary
The present invention relates to a primary gasket (1) for a cylinder assembly (100), wherein said cylinder assembly (100) comprises a cylinder (101) and a float (102) slidingly accommodated in a float housing (104) delimited by a cylinder wall (103) of said cylinder (101) for pressurizing a fluid, wherein the primary gasket (1) comprises an annular body (2), which extends circumferentially at least along a circumferential direction (C-C) about an axial direction (X-X), wherein said primary gasket (1) defines a radial direction (R-R) perpendicular to said axial direction (X-X) and said circumferential direction (C-C), wherein said annular body (2) is configured to be accommodated in a primary gasket housing (105) defined in said cylinder wall (103), wherein the primary gasket housing (105) is delimited radially by an axial housing wall (107) and axially by a first radial housing wall (108) and a second radial housing wall (109) connected to said axial housing wall (107), wherein said annular body (2) comprises an inner lip (4), a central lip (5), an outer lip (6), and a back portion (3), wherein the back portion (3) comprises a back abutment surface (13) configured to abut against the first radial housing wall (108) of said primary gasket housing (105), wherein the inner lip (4), the central lip (5), and the outer lip (6) extend axially from the back portion (3), on the side opposite to the back abutment surface (13), radially spaced apart from one another, wherein the inner lip (4) is configured to form a seal with said float (102), wherein the outer lip (6) is configured to form a seal with said axial housing wall (107), wherein the central lip (5) comprises an annular lip body (14), which extends axially between said back portion (3) and a central lip edge (15), wherein the annular lip body (14) has a central lip thickness (S) along said radial direction (R-R), wherein the central lip edge (15) comprises at least one central lip abutment portion (7) configured to abut against the second radial wall (109), wherein the central lip (5) comprises at least one radial opening (9), wherein said at least one radial opening (9) passes through the central lip thickness (S) defining a closed side opening profile (8) in said annular body (14).