Pipe Joint Ring Body for Self-Centering Spigot Alignment
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Solution Overview
Problem
Conventional pipe joining methods require significant time and effort due to the need for a spigot insertion jig, which complicates the alignment and sealing process between pipes.
Innovation Solution
A ring body with a deviation prevention member is integrated into the pipe joint, allowing for centering of the pipes without the need for external tools, as it moves the spigot in the radial direction and remains in place after joining, reducing the effort required for pipe alignment and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a spigot insertion jig is used for pipe joining, then centering alignment is achieved, but the joining process becomes time-consuming and labor-intensive
Solution Approach 1:
The patent merges the spigot insertion jig functionality directly into the ring body structure. The ring body incorporates a deviation prevention member that performs the centering alignment function previously requiring a separate jig, thereby eliminating the need for external alignment tools and reducing joining time while maintaining precision.
Solution Approach 2:
The ring body is designed to perform self-alignment through its integrated deviation prevention member. When the spigot is inserted into the socket, the deviation prevention member automatically prevents radial deviation and centers the spigot without requiring external jigs or manual alignment operations, enabling the system to self-center during insertion.
2Manufacturing precision
If a spigot insertion jig is used for alignment, then centering is achieved, but device complexity increases
Solution Approach 1:
The patent extracts the alignment function from the separate spigot insertion jig and integrates it into the ring body structure. This eliminates the need for external alignment devices, reducing device complexity while maintaining the centering alignment capability through the integrated deviation prevention member.
Solution Approach 2:
The deviation prevention member is merged with the ring body, combining the sealing function and alignment function into a single integrated component. This reduces the number of separate devices needed for pipe joining, simplifying the overall system while maintaining manufacturing precision.
3Reliability
If the seal ring is compressed to seal between pipes, then sealing is achieved, but excessive force may damage the seal ring
Solution Approach 1:
The ring body is positioned beforehand to prevent excessive compression of the seal ring. By placing the ring body in a predetermined position within the socket, it acts as a stop that limits the compression distance of the seal ring, ensuring adequate sealing while preventing damage from over-compression.
Solution Approach 2:
The ring body serves as an intermediary element between the spigot and the seal ring. It controls the compression of the seal ring by limiting the movement distance, thereby mediating between the need for sealing compression and the need to prevent excessive force that would damage the seal ring.
Data Source
AI summary
A ring body to be provided in a pipe joint which can prevent a spigot from separating from a socket by a spigot protrusion engaging with a lock ring from the back side of the socket in the separation direction A of the spigot. The ring body includes a main body part which is inserted into between the inner peripheral surface of the socket and the outer peripheral surface of the spigot to be provided in the pipe joint, and a deviation prevention member that prevents the main body part from deviating to the opening end side of the socket, wherein the main body part moves the spigot in the pipe radial direction with respect to the socket, thereby reducing deviation in the pipe radial direction between the pipe axis of a first pipe and the pipe axis of a second pipe.