Replaceable Inner-Liner Hose for Abrasive Slurry Service
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hoses used in abrasive slurry transportation industries, such as dredging and oil-sand industries, face challenges with worn inner liners that require replacement or refurbishment, making inspection and maintenance difficult.
Innovation Solution
The inner tube of the hose is designed to be unconnected from the outer tube at both ends, allowing for easy removal and replacement with a new inner tube, featuring flanges and retainer rings for secure attachment and axial movement, enabling early leak detection and facilitating refurbishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inner tube is permanently connected to the outer tube, then the structural integrity and reliability of the hose is improved, but the ease of repair and refurbishment deteriorates
Solution Approach 1:
The hose is divided into separable components: the outer tube and the inner tube are connected through removable connecting means (flanges with bolts) rather than permanent bonding. This segmentation allows the inner tube to be removed and replaced independently while maintaining structural integrity during operation, directly resolving the contradiction between reliability and ease of repair.
2Reliability
If the inner tube is permanently connected to the outer tube, then the structural integrity of the hose is improved, but the loss of time for replacement and refurbishment increases
Solution Approach 1:
By segmenting the hose into separable components with removable connecting means, the inner tube can be quickly extracted and replaced without time-consuming destruction of the old connection or complex reassembly procedures, thus reducing replacement time while maintaining structural integrity through standardized flange connections.
Solution Approach 2:
The connecting means (flanges with bolt holes and sealing surfaces) are pre-formed during manufacturing, allowing for rapid assembly and disassembly during maintenance operations. This preliminary preparation of connection interfaces significantly reduces the time required for inner tube replacement while ensuring reliable structural connection.
3Ease of repair
If the inner tube is unconnected from the outer tube, then the ease of repair and inspection is improved, but the device complexity increases
Solution Approach 1:
The hose is segmented into outer tube and inner tube components connected by standardized flanges and connecting means. This segmentation enables easy inspection and repair by allowing independent removal of the inner tube, while the standardized nature of the connecting means prevents excessive complexity by providing a simple, repeatable connection mechanism.
4Productivity
If the inner tube is unconnected from the outer tube, then the productivity for refurbishment is improved, but the device complexity increases
Solution Approach 1:
Segmenting the hose into separable components with standardized connecting means enables rapid refurbishment by allowing quick removal and replacement of the inner tube. The simplicity of the flange-and-bolt connection system ensures that this segmentation does not create excessive device complexity, thus improving productivity without overwhelming structural complexity.
Data Source
AI summary
A hose includes a tubular section having an outer tube and an inner tube. The inner tube forms a liner for the outer tube. Apart from being connected by connecting means near both ends of the tubular section, the inner tube is unconnected to said outer tube.