Resin Pipe Joint Geometry for Cut-Free Compact Piping
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Solution Overview
Problem
The challenge is to reduce the volume of piping systems while maintaining efficiency, as conventional resin pipe joints require cutting and welding, leading to decreased production efficiency and flow rate due to diameter discrepancies at branched, curved, and transition points.
Innovation Solution
A resin pipe joint design where the length from branched, curved, or inner diameter transition points to the welding end portion is shorter than half the distance between adjacent points, eliminating the need for cutting and ensuring consistent diameters for seamless welding, thereby preventing step differences and flow resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the end portions of resin pipe joints are cut in situ to shorten the joint for piping with short distances between branched/curved/transition points, then the piping can be adapted to various shapes, but production efficiency decreases due to additional cutting and treatment operations
Solution Approach 1:
The resin pipe joint is designed with pre-determined dimensions during manufacturing, where the length from the branched point/curved point/inner diameter transition point to the welding end portion is optimized in advance. This preliminary design eliminates the need for post-production cutting operations, allowing the joint to fit various piping configurations directly from the factory.
Solution Approach 2:
The invention optimizes the length parameter of the resin pipe joint by setting it to be shorter than half the distance between adjacent special points (branched points, curved points, inner diameter transition points). This parameter optimization allows the joint to accommodate short-distance piping sections without requiring cutting operations.
2Length of moving object
If the end portion of a resin pipe joint is cut to shorten it, then the joint length is reduced, but the inner diameter at the cut end becomes smaller than the original, creating step differences that reduce flow rate
Solution Approach 1:
The resin pipe joint is manufactured with a pre-optimized length that eliminates the need for cutting. The length from the branched point/curved point/inner diameter transition point to the welding end portion is designed in advance to be shorter than half the distance between adjacent special points, ensuring both compact size and full inner diameter preservation.
Solution Approach 2:
The invention optimizes the length parameter of the resin pipe joint by setting it to be shorter than half the distance between adjacent special points (branched points, curved points, inner diameter transition points). This parameter optimization allows the joint to accommodate short-distance piping sections without requiring cutting operations.
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 efficient production of piping with various shapes without cutting, reducing flow resistance and maintaining production efficiency by ensuring consistent diameters and eliminating step differences during welding.
Implementation Method 1
Both of the end portions of the resin pipe joint and the resin piping member held by the clamp jigs are heated by a heater or other heating device to melt their end portions
Implementation Method 2
the resin pipe joint and the resin piping member or like are brought close to each other to butt their end portions against each other by applying a required pressure and weld them
Data Source
AI summary
A resin pipe joint (1, 11) includes a tubular joint body portion (2, 12) defining an internal flow path (P) the internal flow path being configured to allow a fluid to flow therein; and two or more welding end portions (3-3c, 13a, 13b) respectively provided at two or more opening portions (A1-A3) of the internal flow path (P), each of the welding end portions being configured to be welded to an abutting welding end portion of other resin piping member, wherein the internal flow path (P) comprises: one of a branched point (Bp) that branches the internal flow path (P) into two or more portions; a curved point (Cp) that bends the internal flow path (P); and an internal diameter transition point (Tp) that changes an internal diameter of the internal flow path, in mid-way of the internal flow path, and wherein a length (Lh) from the branched point (Bp), the curved point (Cp) or the inner diameter transition point (Tp) to an end face of the welding end portion (3-3c, 13a, 13b) is shorter than half of a straight distance (SD, SD1-SD4) between two points adjacent to each other, the two points being selected from the group consisting of branched points (Bp), curved points (Cp) and inner diameter transition points (Tp) of piping to be formed using the resin pipe joints (1, 11).