Pipeline Coating Applicator Dust Extraction Hood
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pipeline field joint coating techniques face issues with overspray contamination of the environment due to inefficient powder transfer, posing safety hazards and environmental pollution, especially in sub-sea environments where physical damage from trawler activity is a concern.
Innovation Solution
A pipeline field joint coating applicator machine featuring a dust extraction hood with lateral holes coupled to a vacuum source and filter, surrounding the coating applicator to capture and filter airborne coating material, ensuring efficient containment and extraction of errant powder, thereby reducing atmospheric contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If powder coating material is dry-sprayed onto the heated field joint, then the field joint is coated to prevent corrosion and physical damage, but overspray contaminates the environment and creates safety hazards
Solution Approach 1:
The harmful overspray is extracted from the working environment using a dust extraction system with a hood that surrounds the coating applicator. The hood is connected to a dust extraction device that captures and removes overspray material, separating it from the clean working space while maintaining the coating application process.
Solution Approach 2:
A hood structure acts as an intermediary between the coating applicator and the working environment. This hood captures overspray at its source and channels it to the dust extraction device, serving as a mediator that prevents direct contamination of the workspace while allowing the coating process to proceed.
2Object-generated harmful factors
If a dust extraction hood is added to capture overspray, then environmental contamination is reduced, but the device complexity increases
Solution Approach 1:
The dust extraction hood is merged with the existing coating applicator assembly, integrating the environmental protection function into the current device structure. This combination approach adds the dust extraction capability while minimizing the increase in overall device complexity by sharing structural elements and mounting systems.
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 solution effectively minimizes environmental pollution and enhances operational safety by ensuring that coating material is contained and filtered, improving the efficiency of the coating process and reducing the risk of physical damage to field joints in sub-sea environments.
Implementation Method 1
a first frame arranged to be mounted on a pipeline and which first frame carries an induction heating coil encircling the pipeline for heating field joints of the pipeline
Implementation Method 2
the dust extraction hood being coupled to a vacuum source and a filter such that air may be drawn into the hood via one or both of the holes in the lateral sides of the hood under action of the vacuum source
Implementation Method 3
air so drawn into the hood which is then contaminated with coating material from the applicator is filtered from the coating material via the filter
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A pipeline field joint coating applicator machine comprising: a first frame (2) arranged to be mounted on a pipeline carrying an induction heating coil (4) which encircles the field joint for heating. And a second frame (6) mounted on the pipeline and rotatable thereabout, which second frame carries a pipeline field joint coating applicator (8). A dust extraction hood (24) is mounted on the second frame (6) and has lateral sides with respective holes (30, 32) therein through which the pipeline may pass. The dust extraction hood (24) is coupled to a vacuum source and a filter such that air may be drawn into the hood via one or both of the holes such that coating material-contaminated air is filtered.