Segmented Rehabilitation Pipe With Inter-Segment Diameter Expander
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Solution Overview
Problem
Existing pipe rehabilitation methods require modifying the diameter of rehabilitation pipes, which leads to extended construction times and increased costs due to the need for new metal molds when slight size adjustments are needed.
Innovation Solution
A rehabilitation pipe system comprising segments with an inner surface plate, side plates, and end plates made from plastic material, where a diameter expander is inserted between segments to enlarge the pipe diameter, allowing for speedy and cost-effective assembly of a larger diameter pipe unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a metal mold is newly manufactured to modify the diameter of the rehabilitation pipe, then the inside diameter of the rehabilitation pipe can be made larger than the rated size, but the construction time is extended and construction costs increase
Solution Approach 1:
The rehabilitation pipe is divided into multiple segments that can be assembled together. Each segment has a standard diameter, and by combining multiple segments with diameter expanders inserted between them, the overall pipe diameter can be increased without manufacturing a completely new custom-sized pipe, thereby reducing construction time and costs.
Solution Approach 2:
A diameter expander is introduced as an intermediary component between the segments. This expander serves as a mediator that increases the overall diameter of the assembled pipe unit without requiring custom manufacturing of each segment. The expander is inserted into the gap between segments during assembly, enabling diameter adjustment while maintaining standard segment dimensions.
2Length of moving object
If a metal mold is newly manufactured to modify the diameter of the rehabilitation pipe, then the inside diameter of the rehabilitation pipe can be made larger than the rated size, but construction costs increase
Solution Approach 1:
The rehabilitation pipe is divided into multiple segments that can be assembled together. Each segment has a standard diameter, and by combining multiple segments with diameter expanders inserted between them, the overall pipe diameter can be increased without manufacturing a completely new custom-sized pipe, thereby reducing construction time and costs.
Solution Approach 2:
A diameter expander is introduced as an intermediary component between the segments. This expander serves as a mediator that increases the overall diameter of the assembled pipe unit without requiring custom manufacturing of each segment. The expander is inserted into the gap between segments during assembly, enabling diameter adjustment while maintaining standard segment dimensions.
3Adaptability or versatility
If segments are linked in the circumferential direction to assemble the rehabilitation pipe, then the pipe can be constructed from standardized components, but the diameter cannot be easily adjusted larger than the rated size
Solution Approach 1:
A diameter expander is introduced as an intermediary component between the segments. This expander serves as a mediator that increases the overall diameter of the assembled pipe unit without requiring custom manufacturing of each segment. The expander is inserted into the gap between segments during assembly, enabling diameter adjustment while maintaining standard segment dimensions.
Solution Approach 2:
The diameter expansion is achieved locally at specific positions where diameter expanders are inserted between segments, rather than requiring all segments to be custom-manufactured with different dimensions. This allows standardized segments to be used while achieving non-standard overall diameter through localized modification.
Data Source
AI summary
A pipe unit for a rehabilitation pipe is used to rehabilitate an existing pipe. The pipe unit has segments mutually linked in a circumferential direction of the pipe unit, and at least one diameter expander for enlarging an inner diameter of the pipe unit. The diameter expander has a thickness in the circumferential direction of the pipe unit and is inserted between an adjacent pair of the mutually linked segments so as to be completely separated from each other by the diameter expander in the circumferential direction and by an amount corresponding to the thickness of the diameter expander.