Fire-Extinguishing Pipe Welding With Internal Spatter Collection
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Solution Overview
Problem
Existing pipeline elements in fire extinguishing installations face challenges with corrosion resistance and flow resistance due to weld spatter accumulation and poor surface uniformity, especially in complex systems with multiple outlets and welded connections, which increases costs and requires more powerful pumps or larger pipe widths.
Innovation Solution
A method involving a collecting container to capture weld spatter during welding, forming a fully encircling weld seam with a root that encompasses the inner edges, ensuring a smooth surface for better coating and reducing flow resistance, and applying a polymer-based layer for enhanced corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hollow bodies are connected by welding to form complex pipeline elements, then the pipeline element can handle multiple outlets and complex fluid distribution, but weld spatter accumulates on the inside surface increasing flow resistance
Solution Approach 1:
The harmful weld spatter is extracted from the pipeline interior by positioning a collecting container inside the hollow body during welding. The container captures spatter as it forms, removing it from the fluid flow path and preventing the increase in flow resistance that would otherwise occur with complex welded configurations.
Solution Approach 2:
The collecting container acts as an intermediary element during the welding process. It mediates between the welding operation (which creates spatter) and the pipeline interior (which should remain clean for optimal flow). The container temporarily holds the spatter, allowing complex welding to proceed without compromising future flow characteristics.
2Ease of manufacture
If pipe connectors are used to join hollow bodies, then assembly is simplified, but flow resistance increases due to connection geometry
Solution Approach 1:
The invention merges the joining function (welding) with the spatter collection function into a single integrated process. By positioning the collecting container inside the hollow body during welding, the connection between hollow bodies is made without requiring separate spatter management steps, and the spatter is captured as part of the joining operation itself.
3Object-generated harmful factors
If weld spatter is collected using water baths in prior art, then spatter is captured, but contamination and drying requirements increase complexity
Solution Approach 1:
Instead of using a water bath (liquid medium) to capture spatter, the invention uses a collecting container that can be positioned inside the hollow body. This copies the spatter-capture function but eliminates the contamination and drying issues associated with water baths, as the container can be removed with the spatter contained within.
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 achieves improved corrosion resistance and flow characteristics in complex pipeline elements, reducing the need for more powerful pumps or larger pipe widths, while ensuring a uniform surface for effective polymer coating and minimizing the risk of weld spatter accumulation.
Implementation Method 1
weld spatter that occurs on the inside of the pipeline element during the welding process
Implementation Method 2
the use of polymer enhancement by autodeposition on the inside of the pipe in pipeline elements of fire extinguishing installations. The polymer enhancement described in said documents is extremely robust owing to the attained ionic bonding of a polymer-based coating material to the pipe surface
Data Source
AI summary
The invention relates to a method for producing a pipeline of a fire extinguishing installation. The method includes providing a first hollow body and a second hollow body, positioning the hollow bodies relative to one another in a welding zone such that the connection of the hollow bodies can be performed in the welding zone, positioning a collecting container within the first and/or second hollow body in the region of the welding zone, welding the first hollow body to the second hollow body in the welding zone such that the pipeline element is obtained, wherein a fully encircling weld seam is generated which has a root extending on the inside of the pipeline element; and collecting, by the collecting container, weld spatter that occurs on the inside of the pipeline element during the welding process.