Thick-Wall Compression Fitting for Fast Leak-Proof Pipe Joining
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Solution Overview
Problem
Traditional fluid transmission systems for thick-wall pipelines rely on threaded connections, which are inefficient, require significant space, and face challenges in leakage prevention.
Innovation Solution
A thick-wall compression fitting with a sealing ring, positioning retainer, and 'C' shaped snap ring is used, allowing for instant connection with a crimping tool, eliminating the need for threaded connections and enhancing sealing and tensile strength through radial contraction of the snap ring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If threaded connections are used to connect thick-wall steel pipe bodies, then the connection can be achieved, but the installation efficiency is low and the working space requirement is large
Solution Approach 1:
The patent replaces the traditional threaded mechanical connection system with a compression connection system. The thick-wall fitting body with flared sections compresses the steel pipe bodies directly, eliminating the need for threading operations. This substitution dramatically improves installation efficiency and reduces the time and space required for connection.
Solution Approach 2:
The thick-wall fitting body is segmented into functional sections: a middle connecting section and two flared sections. This segmentation allows each part to perform its specific function - the flared sections provide compression and sealing, while the connecting section joins the pipes, thereby improving overall connection efficiency.
2Adaptability or versatility
If threaded connections are used, then various pipeline systems can be realized, but the working space requirement increases
Solution Approach 1:
By replacing threaded connections with compression connections, the patent reduces the working space required for installation. The compression fitting can be installed in tighter spaces without requiring the extended workspace needed for threading operations, while still achieving versatile pipeline configurations.
3Reliability
If threaded connections are used, then the connection can be made, but leakage prevention becomes complex
Solution Approach 1:
The patent extracts the sealing function from the complex threaded connection structure and implements it through dedicated sealing components (sealing rings) within the compression fitting. This separation simplifies the overall connection structure while ensuring reliable leakage prevention through specialized sealing elements.
Solution Approach 2:
The thick-wall fitting body incorporates sealing rings at specific locations within the flared sections, providing localized sealing quality where it is most needed. This targeted approach to sealing simplifies the overall connection structure compared to relying on threaded connections for both mechanical strength and sealing.
4Productivity
If traditional thin-wall compression fittings are used, then installation is efficient, but they are not suitable for thick-wall steel pipe bodies
Solution Approach 1:
The patent modifies the key parameter of wall thickness compatibility by designing a thick-wall fitting body with sufficient wall thickness to accommodate and compress thick-wall steel pipe bodies. This parameter change allows the compression connection method to be applied to thick-wall pipes while maintaining installation efficiency, unlike traditional thin-wall fittings.
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 provides a fast, efficient, and leak-proof connection with improved pressure bearing and impact resistance, while reducing material costs and avoiding pollution from threading operations, and offers stronger corrosion resistance with galvanized carbon steel and EP coating.
Implementation Method 1
the thick-wall steel pipe body and the thick-wall fitting body are sealed and connected with the sealing ring
Implementation Method 2
the teeth ring is a 'C' shaped snap ring having an elastic force of radial contraction
Implementation Method 3
the positioning retainer and the teeth ring are installed in the second flared section in consecutive sequential order
Data Source
AI summary
A thick-wall compression pipe fitting includes a thick-wall fitting body for connecting arranged between two thick-wall steel pipe bodies for connection, wherein a sealing ring, a positioning retainer and a teeth ring is disposed between said thick-wall fitting body and said thick-wall steel pipe bodies. Said thick-wall fitting body includes a middle connecting section, a first flared section and a second flared section extending to both sides to adopt a thick wall metal pipe. A special crimping tool is used to deform the fitting body for crimping to compress the socket section of the fitting body having a sealing ring and a high-strength teeth ring, so that the sealing ring in the socket section groove seals the steel pipe to stop leakage, wherein the high-strength teeth ring shrinks and firmly fastens the steel pipe so that the connection between the fitting body and the steel pipe can be completed instantly.