Valve Coupling Connection Fitting for 1000 Bar Pressure Resistance
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Solution Overview
Problem
Existing valve couplings and measuring couplings for fluid systems are not designed to handle operating pressures above 630 bar, and they fail to maintain durability and burst pressure resistance at high pressures, leading to deformation and damage during coupling procedures.
Innovation Solution
The connection fitting features a closed contact surface on the opening pin with lateral passage holes and a valve seat integrated directly into the coupling bushing, eliminating the need for external threads or flanges, which reduces deformation and enhances durability by distributing pressure loads across a non-perforated surface and supporting the valve body directly within the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a perforated opening pin design is used in connection fittings, then fluid connection can be established, but the pin deforms under high pressure (above 630 bar) leading to coupling damage
Solution Approach 1:
The opening pin is segmented into two functional zones: a closed contact surface area that remains intact to withstand high pressure, and lateral passage holes that allow fluid connection. This segmentation allows different parts of the pin to serve different functions - the closed surface provides structural strength while the passage holes enable fluid flow.
Solution Approach 2:
The opening pin has non-uniform quality distribution: the contact surface area is solid and closed to provide high pressure resistance, while specific lateral regions contain passage holes for fluid connection. This local differentiation optimizes both strength and operational functionality.
2Ease of operation
If external threads or flanges are used on the coupling bushing, then connection can be established, but thread friction increases and deformation occurs under high pressure
Solution Approach 1:
The external threads and flanges are completely removed from the coupling bushing design. Instead, the connection is established through a simplified interface where the coupling bushing inserts into the connection fitting and is secured by the opening pin mechanism, eliminating the problematic threaded connection that generates high friction and deformation under pressure.
Solution Approach 2:
Instead of using external threading on the coupling bushing to achieve connection, the design inverts the approach by using an internal securing mechanism where the opening pin with passage holes provides both the connection interface and the sealing function, eliminating the need for traditional external threads.
3Ease of manufacture
If the valve seat is not integrated into the coupling bushing, then manufacturing is simpler, but the valve body is not properly supported under high pressure
Solution Approach 1:
The valve seat is merged with the coupling bushing into a single integrated component. This integration ensures that the valve body is properly supported and positioned within the coupling bushing, maintaining reliability under high pressure while the integrated design actually simplifies manufacturing by reducing the number of separate parts and assembly steps.
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 reliable and damage-free coupling at high pressures up to 1000 bar, improving the service life and reliability of the connection fitting and coupled valve couplings, while reducing thread friction and production complexity.
Implementation Method 1
a spring-loaded and mechanically actuatable non-return valve is arranged whose valve body is supported on a valve seat when in the non-actuated state
Implementation Method 2
the opening pin has an especially circular, closed contact surface for the valve, wherein the opening pin has at least one passage hole which runs laterally to the contact surface and through which a connection between the connection fitting and the valve coupling and measuring coupling can be established
Data Source
AI summary
The invention relates to a connection fitting (102) for a valve coupling and/or measuring or test coupling (2) for fluid systems for detecting working pressures of fluid media, the coupling (2) comprising a coupling bushing (6) which is subject to operating pressure in the installed state and which has a connection part (16) and a borehole (10) in which a spring-loaded and mechanically actuatable non-return valve (32) is arranged, the valve body (18) of which, in the non-actuated state, is supported on a valve seat (52), the connection fitting (102) having an opening pin (114) having a more particularly circular, closed contact surface for the valve (32) and at least one passage (118) extending laterally to the contact surface, through which passage a connection can be established between the connection fitting (102) and the valve coupling and/or measuring or test coupling (2).