Pipe Field Joint Coating Machine for Uniform On-Site Application
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Solution Overview
Problem
The process of applying field joint coatings on steel pipes in remote and extreme environments is challenging due to varying conditions and lack of skilled labor, leading to inadequate or inconsistent coatings, which is time-consuming and expensive.
Innovation Solution
A machine with a rotating carriage that applies multiple coatings, including anti-corrosion and polymer coatings, using a heating element and applicators to secure and coat the pipe segment in a single automated pass, ensuring coatings are applied while still hot and uncured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If field joint coatings are applied manually in remote and extreme environments, then the process can be performed on-site, but the coating quality becomes inconsistent and inadequate due to varying conditions and lack of skilled labor
Solution Approach 1:
The patent replaces manual mechanical coating processes with an automated coating machine that uses controlled mechanical systems to apply coatings. The machine includes automated applicators, heating elements, and rotation mechanisms that eliminate human skill variability and provide consistent coating application in field conditions.
Solution Approach 2:
The patent implements controlled parameter changes by incorporating heating elements that maintain specific temperature ranges during coating application, and by controlling the rotation speed and coating application rates. These parameter controls ensure consistent coating quality despite varying environmental conditions in remote locations.
2Reliability
If multiple coating layers are applied sequentially in traditional field processes, then comprehensive corrosion protection is achieved, but the process becomes time-consuming and expensive
Solution Approach 1:
The patent implements continuous coating application by integrating multiple coating applicators on a single rotating machine. The machine applies anti-corrosion coating, polymer coating, and tie coating in continuous sequence during one rotation, eliminating idle time between coating stages and maintaining continuous productive action throughout the coating process.
Solution Approach 2:
The patent merges multiple coating application functions into a single integrated machine. The device combines anti-corrosion applicator, polymer applicator, and tie coating applicator on one platform, allowing all coating layers to be applied in one operation rather than requiring separate manual processes for each layer.
3Manufacturing precision
If coatings are applied while the pipe is rotating, then uniform coating distribution is achieved, but the machine complexity increases
Solution Approach 1:
The patent achieves coating uniformity through pipe rotation while keeping the machine structure relatively simple. The rotation mechanism serves multiple functions: it distributes coating uniformly, positions the pipe sequentially under different applicators, and controls the coating application rate. This multi-functionality reduces the need for complex individual positioning mechanisms for each applicator.
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 ensures a strong bond between layers, provides uniform and efficient application of coatings, and reduces the time and cost associated with field joint coating processes.
Implementation Method 1
a heating element mounted on the frame for heating the pipe segment
Implementation Method 2
an anti-corrosion applicator mounted on the carriage for applying an anti-corrosion coating onto the pipe segment
Implementation Method 3
a polymer applicator mounted on the carriage sequentially adjacent to the anti-corrosion applicator for applying a polymer coating onto the pipe segment
Data Source
AI summary
The present invention provides a machine and method for applying multiple coatings around a segment of the pipe. The machine includes a frame with a carriage that is rotatable around a periphery of the pipe segment, a heating element mounted on the frame for heating the pipe segment, an anti-corrosion applicator mounted on the carriage for applying an anti-corrosion coating onto the pipe segment, and a polymer applicator mounted on the carriage sequentially adjacent to the anti-corrosion applicator for applying a polymer coating onto the pipe segment. The anti-corrosion applicator and the polymer applicator apply their respective coatings onto the pipe segment as the carriage rotates in one direction.