Compact Cartridge Coupling with Hydrostatic Decompression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cartridge couplings face issues with non-optimal reliability, volume, and the need for a lever to activate decompression, which complicates coupling and uncoupling, especially in harsh environments and under high pressure conditions.
Innovation Solution
A compact cartridge coupling design with a hydrostatically-balanced decompression system that allows pressure moderation and coupling/uncoupling without a lever, featuring a female semi-coupling with a decompression valve and hydraulic blocking means for seamless fluid management, enabling push-pull operation and reduced volume for narrow spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lever is used to activate decompression, then pressure can be reduced, but the overall volume increases and reliability decreases
Solution Approach 1:
The patent extracts the decompression function from the lever mechanism and integrates it directly into the valve assembly. The decompression means are built into the valve body, eliminating the need for a separate lever component while maintaining the pressure reduction capability.
Solution Approach 2:
The decompression means are merged with the valve assembly to form an integrated unit. The decompression chamber, valve, and sealing elements are combined within the same structural envelope, reducing overall complexity and improving reliability by eliminating additional connection points.
2Volume of moving object
If decompression lever is eliminated, then overall volume is reduced, but pressure moderation capability must be maintained
Solution Approach 1:
The decompression chamber is nested within the valve assembly structure. The decompression valve and its sealing elements are nested within the same housing that contains the main valve components, allowing pressure moderation functionality to be embedded without increasing external dimensions.
Solution Approach 2:
The patent uses parameter changes in the decompression valve design, specifically varying the sealing surface areas and chamber volumes to achieve effective pressure moderation. The decompression valve area is designed to be smaller than the main valve area, creating the necessary pressure differential for automatic decompression while maintaining compact dimensions.
3Object-affected harmful factors
If cartridge coupling is positioned inside cast iron housing, then protection against harsh environments is improved, but access for maintenance and operation becomes difficult
Solution Approach 1:
The cartridge coupling assembly is designed as a universal, self-contained unit that can be easily removed and replaced. The standardized interface allows the entire assembly to be treated as a single serviceable component, maintaining protection while enabling easy maintenance through simple cartridge replacement rather than disassembly.
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 solution enhances reliability, reduces coupling and uncoupling loads, and allows for efficient pressure management, facilitating operations in tight spaces and harsh conditions while maintaining high-pressure compatibility.
Implementation Method 1
decompression means, on said female semi-coupling, to moderate the pressure inside the line thus facilitating the operations of coupling and uncoupling
Implementation Method 2
said decompression means comprise a hydrostatically-balanced decompression valve
Implementation Method 3
said housing comprising at least one recovery channel for the clean oil and one draining channel for the dirty oil
Implementation Method 4
hydraulic blocking means adapted to prevent the front valve assembly from closing when the male coupling is inserted and regardless of the flow direction and pressure in the line
Data Source
AI summary
The present invention relates to a compact cartridge coupling of the type adapted to connect a pressurized fluid line between a vehicle or apparatus and a user, the coupling comprising a female semi-coupling adapted to receive a male semi-coupling and a decompression element adapted to moderate the pressure inside the female semi-coupling thus allowing a male under pressure to be coupled and allowing the male to be disconnected while leaving pressure in the user line, the cartridge coupling being further characterized by a 3:1 hydraulic unbalancing system between the pressure force acting on the female valve assembly and that acting on the male valve assembly.