Staggered Sealing Arrangements for Hydraulic Force Balancing
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Solution Overview
Problem
The existing distribution casing devices for hydraulic machines are not easily adaptable to various types of internal fluid distributors, requiring a wide range of designs and making mass production impractical due to the need for specific shapes and sealing arrangements to balance fluid forces effectively across different operating conditions.
Innovation Solution
The distribution casing device features staggered sealing inside bearing surface arrangements with annular grooves for receiving sealing gaskets, allowing for adjustable fluid balancing depending on the type of internal distributor, using radial and shoulder surfaces to manage hydraulic forces, and an optional secondary hole for cylinder capacity selection, enabling compatibility with both single and dual cylinder capacity machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distribution casing device uses specific shapes and sealing arrangements to balance fluid forces for a particular internal distributor type, then the hydraulic force balancing is effective, but the device complexity increases and adaptability to other distributor types decreases
Solution Approach 1:
The distribution casing device incorporates multiple sealing inside bearing surface arrangements (first, second, and third) that can accommodate different types of internal distributors. The casing portion has a standardized structure with main holes and orifices that work with various distributor configurations, allowing a single casing design to serve multiple distributor types while maintaining effective hydraulic force balancing through the staged sealing surfaces.
Solution Approach 2:
The sealing inside bearing surface arrangements are divided into three distinct stages positioned at different locations along the axial direction. This segmentation allows each sealing arrangement to handle specific hydraulic force balancing requirements for different distributor types, providing modular adaptability without requiring complete redesign of the casing structure.
2Reliability
If multiple distribution casing device designs are created to match different internal distributor types, then the hydraulic force balancing is optimized for each type, but the manufacturing cost increases and mass production becomes impractical
Solution Approach 1:
The distribution casing device uses a universal casing portion design with standardized main holes, orifices, and three-stage sealing arrangements that can accommodate multiple internal distributor types. This single standardized casing design replaces the need for multiple specialized casing designs, enabling mass production while maintaining optimized hydraulic force balancing for different distributor configurations.
3Reliability
If the sealing inside bearing surface arrangements are positioned to balance fluid forces for single cylinder capacity machines, then the force balancing works for single capacity, but the adaptability to dual cylinder capacity machines is limited
Solution Approach 1:
The three-stage sealing inside bearing surface arrangements are positioned at different axial locations to create flexible force balancing zones. The first arrangement between the open end and first main orifice, the second between the two main orifices, and the third beyond the second orifice, allows selective engagement with different distributor configurations. This staged segmentation enables the same casing to provide appropriate force balancing for both single and dual cylinder capacity machines by engaging different sealing stages depending on the distributor type.
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
This design allows for a single distribution casing device to be used with various internal distributors, effectively balancing hydraulic forces across different operating conditions, reducing the need for multiple designs and enabling mass production while maintaining efficient fluid sealing and pressure management.
Implementation Method 1
at least two of the three sealing inside bearing surface arrangements are staggered inside arrangements, each of which comprises two axial bearing surfaces that are staggered relative to each other, and that are separated by a shoulder facing towards the open axial end
Implementation Method 2
due to the fluid pressure prevailing in said orifice, a reaction force is generated against said uninterrupted portion that tends to move the communication face of the cylinder block away from the distribution face of the internal distributor
Implementation Method 3
it is necessary to balance the forces by causing the above-mentioned reaction forces that tend to cause the internal distributor to move away from the cylinder block to be compensated for by opposing forces that tend to cause the internal distributor to approach the cylinder block
Data Source
AI summary
The device comprises a casing portion that has an open axial end and that has two main holes, respectively for fluid feed and for fluid discharge. Said holes open out in an inside axial face of the casing portion, respectively via a first main orifice and via a second main orifice that are disposed in succession in the direction going away from the open axial end. The inside axial face has first, second, and third sealing inside bearing surface arrangements, respectively situated between the open axial end and the first main orifice, between the two main orifices, and beyond the second main orifice. At least two of the three arrangements are staggered inside arrangements, each of which comprises two axial bearing surfaces that are staggered relative to each other, and that are separated by a shoulder facing towards the open axial end.