Friction Welding Piping Joints Without Leakage
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Solution Overview
Problem
Existing piping connection methods in catch basins and inlet drains often result in leakage due to inadequate sealing, especially when connecting different pipe types, requiring additional materials like glue or gaskets to prevent water from protruding out and around the structures.
Innovation Solution
A method involving securing a first piping portion to a base to prevent rotation, then using a rotating portion to insert and drive a second piping portion into the first, creating a solid weld between them without additional components, utilizing materials like PVC or polyethylene that melt and fuse together at high speed rotation, ensuring a watertight connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional piping connection methods are used, then piping portions can be connected, but leakage occurs due to inadequate sealing
Solution Approach 1:
The patent changes the physical state of the piping material from solid to molten and back to solid through controlled heating and cooling. The piping portion is heated to melt the material, inserted into the receiving portion, then cooled to solidify and form a permanent weld, eliminating leakage issues associated with traditional mechanical connections
Solution Approach 2:
The invention utilizes phase transitions of the piping material (solid-liquid-solid) to achieve connection. The material is heated to transition from solid to liquid state for insertion, then cooled to transition back to solid state, forming a permanent weld that ensures watertight sealing between piping portions
2Reliability
If additional materials like glue or gaskets are used to prevent leakage, then sealing is improved, but device complexity increases
Solution Approach 1:
The patent merges the connection function and sealing function into a single integrated process. The piping material itself serves both as the structural component and the sealing medium, eliminating the need for separate gaskets, glue, or other auxiliary sealing materials. The molten material fills all gaps and forms a unified welded joint
Solution Approach 2:
The piping material performs self-sealing by utilizing its own molten state to fill gaps and form seals during the connection process. The material self-welds to create the watertight joint without requiring external sealing agents or additional components, making the system self-sufficient
3Stability of the object's composition
If piping portions are connected with rotation prevention, then connection stability is improved, but ease of operation during installation decreases
Solution Approach 1:
The patent employs dynamic positioning where the piping portion is initially free to rotate and move during the insertion process, allowing easy alignment and insertion. Once inserted and molten, the material solidifies to lock the position, providing stability. The system transitions from a dynamic (movable) state during installation to a static (fixed) state after connection
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 method forms a leak-proof joint between piping portions without additional materials, allowing for fluid flow and accommodating different pipe configurations, enhancing the watertightness and durability of the piping system.
Implementation Method 1
a rotating portion rotates at a speed between 1,000 and 10,000 revolutions per minute. The rotating portion may melt the piping material
Implementation Method 2
a rotating portion rotates at a speed between 1,000 and 10,000 revolutions per minute. The rotating portion may melt the piping material
Implementation Method 3
After the second piping portion is inserted into the first piping portion, the rotation of the rotating portion is stopped. The piping material may then cool and solidify to form a permanent weld
Data Source
AI summary
A method for connecting piping includes securing a first piping portion to a base. A second piping portion is secured to a rotating portion. The second piping portion is then rotated. While the second piping portion is rotating, the second piping portion is inserted and driven through the first piping portion. A portion of the first piping portion disconnects from the remainder of the first piping portion. After this disconnection, a rotation of the second piping portion is stopped. A solid weld is formed between the first piping portion and the second piping portion.