One-Piece Cold-Forged Fitting for High-Pressure Sealing
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Solution Overview
Problem
Conventional fittings face challenges in extreme pressure and temperature conditions, leading to premature wear and tear, leaks, and high fabrication complexity, with O-ring sealings being particularly susceptible to erosion and unable to withstand high-pressure applications.
Innovation Solution
A cold-forging method is used to create a one-piece fitting with integral construction, eliminating multi-component fabrication and assembly, utilizing stainless steel or carbon steel with protrusions and grooves for enhanced durability and leak prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fittings use O-ring sealings, then the fitting can be assembled with simple components, but the sealing is susceptible to erosion and cannot withstand high pressure and temperature
Solution Approach 1:
The patent merges the sealing function directly into the fitting body by integrating a resilient sealing bead into the housing structure. This eliminates separate O-ring components while maintaining sealing functionality, resolving the contradiction between sealing durability and structural complexity.
Solution Approach 2:
The patent uses a composite sealing structure combining a resilient material (elastomer) integrated into a rigid housing. This composite approach allows the sealing portion to deform and seal against surfaces while the housing provides structural strength to withstand high pressure and temperature, improving sealing durability without excessive complexity.
2Duration of action of stationary object
If conventional fittings are made with multi-component fabrication, then the fitting can be assembled from standard parts, but the fabrication complexity increases and operational lifetime decreases
Solution Approach 1:
The patent combines multiple components (housing, sealing element, reinforcement) into a single integrated structure formed by cold forging. This eliminates assembly joints and seams that would reduce operational lifetime, while the cold-forging process maintains ease of manufacture through a single-step forming operation.
Solution Approach 2:
The patent segments the fitting into functional zones (sealing zone, reinforcement zone, flow zone) that are integrated into a single piece. This allows each zone to be optimized for its specific function while maintaining structural integrity throughout, extending operational lifetime without requiring multi-component assembly.
3Stress or pressure
If conventional fittings are used in high-pressure applications, then the fitting can handle fluid flow, but the stress causes the fitting to collapse
Solution Approach 1:
The patent employs a composite structure with a resilient sealing bead integrated into a rigid housing. The resilient portion deforms to seal gaps while the rigid housing provides structural strength to withstand high pressure without collapse, resolving the contradiction between pressure tolerance and structural strength.
Solution Approach 2:
The patent applies different material properties to different zones of the fitting: a resilient elastomeric material for the sealing bead and a rigid material for the housing. This local differentiation allows the sealing zone to accommodate pressure variations while the housing maintains structural integrity under high stress.
4Temperature
If conventional fittings operate in extreme temperature conditions, then the fitting can function in various environments, but the elastomeric seals deteriorate prematurely
Solution Approach 1:
The patent uses a composite structure where the rigid housing provides thermal stability in extreme temperature conditions while the integrated resilient bead maintains sealing functionality. This resolves the contradiction between temperature tolerance and seal reliability by distributing thermal and sealing functions across different material zones.
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 method results in a fitting that can withstand extreme pressures and temperatures, reduces manufacturing complexity, and extends operational lifetime while ensuring reliable sealing without joints or seams.
Implementation Method 1
A cold-forging method is used to create a one-piece fitting with integral construction
Data Source
AI summary
The present invention relates to an improved fitting and a method of making the same. The fitting is made via a cold-forging method which decreases fabrication complexity by eliminating multi-component fabrication and assembling, while increasing operational performance of the product.