Nested Buried Pipe Structure for Shallow-Depth Cable Protection
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Solution Overview
Problem
Existing buried pipe configurations struggle to adequately protect pipelines when it is difficult to secure sufficient separation between the ground surface and the buried pipes, due to topographical or strata-related structures.
Innovation Solution
A buried pipe configuration that includes an inner pipe for housing cables, a high-strength protection member disposed on the outer circumference of the inner pipe, and an outer pipe that houses both the protection member and the inner pipe, allowing for effective protection even in shallow sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If marking sheets or protective plates are installed on the ground surface to prevent damage to buried pipelines, then the visibility and protection indication are improved, but the actual mechanical protection against excavation machines is insufficient when separation distance cannot be secured
Solution Approach 1:
The patent implements a nested structure where the inner pipe containing cables is placed inside an outer pipe, with a protection member positioned between them. This nested configuration allows the high-strength protection member to be embedded within the pipe structure itself, providing mechanical protection without requiring additional ground surface markers or plates. The protection member's high strength compensates for the reduced separation distance, directly addressing the contradiction between protection reliability and available separation distance.
Solution Approach 2:
The protection member serves as an intermediary element between the inner pipe and outer pipe, specifically positioned to absorb and resist impacts from excavation machines. This intermediary structure transfers and dissipates mechanical forces before they reach the cable-containing inner pipe, enabling effective protection even when the overall pipe assembly is buried at shallow depths where traditional ground surface markers would be insufficient.
2Ease of manufacture
If the buried pipe is placed at shallow depth to reduce installation cost and complexity, then the ease of installation is improved, but the risk of damage from excavation machines increases
Solution Approach 1:
The nested configuration of inner pipe within outer pipe, with the protection member positioned between them, allows the entire assembly to be installed as a single unit at shallow depths. This structure maintains ease of installation while the high-strength protection member provides the necessary mechanical defense against excavation equipment, effectively decoupling installation simplicity from protection capability.
Solution Approach 2:
The patent employs a composite structure combining the inner pipe (for cable housing), the protection member (for impact resistance), and the outer pipe (for structural integrity). This composite design enables the pipe assembly to withstand mechanical impacts from excavation machines even when buried at shallow depths, reducing damage risk without compromising installation ease.
3Reliability
If a high-strength protection member is added to the buried pipe structure to enhance protection capability, then the protection reliability is improved, but the device complexity increases
Solution Approach 1:
The nested structure integrates the protection member within the existing pipe configuration, placing it between the inner and outer pipes. This arrangement adds protection functionality without requiring separate external components or complex assembly mechanisms. The protection member becomes an inherent part of the pipe structure, minimizing the increase in device complexity while significantly improving protection reliability.
Solution Approach 2:
The patent divides the pipe structure into functional segments: the inner pipe for cable housing, the protection member for impact resistance, and the outer pipe for structural support. This segmentation allows each component to be optimized for its specific function and facilitates modular manufacturing and assembly, reducing overall structural complexity while enhancing protection capabilities through the specialized high-strength protection member.
Data Source
AI summary
The buried pipe 1 includes an inner pipe 11 capable of housing a cable 9, a protection member 12 disposed on the outer circumference of the inner pipe 11, and an outer pipe 10 housing the protection member 12 and the inner pipe 11. The protection member 12 has a higher strength than the inner pipe 11 and the outer pipe 10.