Segmental Rehabilitation Pipe Linking and Filler Injection
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Solution Overview
Problem
The existing pipe rehabilitation method using segments faces inefficiencies in filler material injection due to reduced cross-sectional area when linking members are inserted, hindering smooth and uniform filling operations.
Innovation Solution
The segments are designed with distinct notches on side and inner plates for filler material flow, and a separate opening on end plates for linking members, allowing for staggered notch positions to facilitate uniform and speedy filler injection along the pipe length and circumference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If holes or notches are provided for inserting linking members to join segments, then the segments can be linked in the pipe length direction, but the cross-sectional area for filler material flow is reduced, preventing smooth injection
Solution Approach 1:
The end plate is segmented into distinct functional zones: an insertion hole region for linking members and a separate opening region for filler material flow. This segmentation allows both functions to operate independently without interfering with each other's performance.
Solution Approach 2:
The function of filler material flow is extracted from the linking member insertion path. By providing a separate opening on the end plate specifically for filler material, the system removes the constraint where linking member insertion blocked the filler flow path, thereby restoring smooth injection capability.
2Productivity
If notches are provided on side plates and inner plates for filler material flow, then filler can pass through, but the positions create uneven flow distribution across the pipe circumference
Solution Approach 1:
The notches on side plates and inner plates are positioned asymmetrically in the circumferential direction rather than at identical locations. This asymmetric arrangement creates a staggered flow path pattern that distributes filler material more uniformly across the pipe circumference, preventing concentration at specific zones.
Solution Approach 2:
The filler flow path is extended from a single-plane configuration to a multi-dimensional staggered arrangement. By positioning notches at different circumferential locations on adjacent plates, the system creates a three-dimensional flow distribution pattern that enhances uniformity across the entire pipe cross-section.
3Device complexity
If the same opening is used for both linking member insertion and filler material flow, then the structure is simplified, but the filler material injection becomes non-uniform and inefficient
Solution Approach 1:
The end plate is divided into functionally distinct regions: insertion holes for linking members and separate openings for filler material flow. This segmentation maintains relative structural simplicity while enabling independent optimization of each function's performance.
Solution Approach 2:
The end plate serves multiple functions through its different features: it provides structural closure, contains insertion holes for mechanical linking, and includes separate openings for fluid flow. This multi-functionality approach consolidates diverse operations into a single component without compromising any function's effectiveness.
Data Source
AI summary
A segment for a rehabilitation pipe includes an inner surface plate having an inner circumferential surface, and side plates and end plates provided upright on a peripheral edge of the inner surface plate. The inner surface plate, the side plates, and the end plates are formed integrally from a plastic material. The segments are linked in a circumferential direction and in a pipe-length direction to install a segmental rehabilitation pipe inside an existing pipe. The end plates are provided with an insertion hole through which a linking member is inserted for linking the segments in the circumferential direction. Separately from the insertion hole, the end plates are further provided with an opening for passing therethrough a filler material injected into a space between the existing pipe and the rehabilitation pipe.