OPPC Optical Fiber Cable Direct Leading-Down Structure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current technologies for separating and leading down OPPC optical fiber cables face limitations, including the need for optical units to be placed on the secondary external layer, difficulty in separating two optical units, and strain fittings that hinder cable coiling for maintenance, which complicates the construction of smart grid communication links.
Innovation Solution
A structure and method for directly leading down optical units using a preformed armor rod assembly, link fittings, insulator strings, electric connection jumpers, and an optical unit leading-out connector with a special design for separating and reconnecting plastic-pipe optical units, allowing for flexible installation and maintenance of OPPC optical fiber cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical units are placed on the internal layer for protection, then the optical unit is protected, but it cannot be directly led down at any position
Solution Approach 1:
The cable structure is segmented into internal protective layers and external accessible optical unit positions. The optical units are separated from the main cable body at specific points, allowing them to be led down independently while the remaining cable maintains its protective structure.
Solution Approach 2:
A transition structure or connector is introduced as an intermediary between the internal optical unit and the external leading-down point. This intermediary allows the optical unit to pass through protective layers and be accessed at any position without compromising the overall cable protection.
2Reliability
If strain fitting is installed on the separated optical unit cable section, then the optical unit is secured, but the residual cable cannot be coiled for future maintenance
Solution Approach 1:
The cable system is divided into a secured optical unit section and a separate residual cable section. The strain fitting is applied only to the optical unit section, while the residual cable section remains free and coilable for future maintenance operations.
Solution Approach 2:
The strain fitting function is extracted and applied selectively to only the necessary portion of the cable (the optical unit section), leaving the residual cable section untouched and available for coiling and maintenance.
3Adaptability or versatility
If two optical units are both separated and led down, then complete optical coverage is achieved, but the separation process becomes greatly difficult
Solution Approach 1:
The cable is pre-segmented into sections, each containing one optical unit. This allows both optical units to be separated and led down independently through standardized procedures, reducing the complexity compared to separating them simultaneously from a unified structure.
Solution Approach 2:
The cable is prepared in advance with pre-positioned separation points and structured sections for each optical unit. This preliminary organization makes the subsequent separation and leading-down process straightforward and systematic, rather than complex and ad-hoc.
Data Source
AI summary
A structure for directly leading down the optical unit (OU) from the OPPC (optical phase conductor) cable, by the OU leading-down connector (2) invented recently, is used for separating the plastic-pipe OU from the OPPC cable installed on the tower, avoiding the splicing of fibers on the tower of the old technique. Therefore it is possible to assemble the OPPC cable (1), the OU leading-down connector (2), the preformed armor rod assembly (3), the first link fitting (4), the residual cable rack (5), the second link fitting (6), the insulator string (7) on the ground all together. Then the whole assemble can be erected on to the tower. Just as the conventional overhead power line construction. So it is simple and saving in work.