Cable Sleeve Locking Structure to Prevent Cable Displacement
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Solution Overview
Problem
Cables in cable protection devices are prone to displacement, leading to potential failure and circuit issues, especially in high-voltage applications where such displacement can cause interference and safety risks.
Innovation Solution
A cable protection device featuring a sleeve with a cable duct and a locking barrel that includes a pressing arm and a rotating pressing bump to secure the cable in place, reducing the risk of disengagement by adjusting the hole size to fit snugly around the cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cable protection devices are buried in the ground, then cable damage from external forces is reduced, but it becomes difficult to determine the location and type of cable faults
Solution Approach 1:
The patent introduces an acoustic emission sensor as an intermediary device embedded within the cable protection structure. This sensor detects acoustic signals generated by cable faults and transmits them to a control unit, which processes the signals to determine fault location and type. The intermediary sensor system bridges the gap between the buried cable (which is protected but hidden) and the need for fault detection, allowing fault information to be extracted without exposing the cable.
2Strength
If traditional cable protection structures are used, then cable physical protection is provided, but the structures are bulky and expensive while reducing fault detection capability
Solution Approach 1:
The patent merges multiple functions into a single integrated cable protection device. The protective structure (concrete or plastic housing) simultaneously serves as: (1) physical protection for the cable, (2) mounting structure for the acoustic emission sensor, (3) signal transmission path for fault detection, and (4) corrosion barrier. This consolidation eliminates the need for separate protective structures and sensor housings, reducing overall device complexity, size, and cost while maintaining protective and detection capabilities.
3Difficulty of detecting and measuring
If acoustic emission sensors are placed on the cable surface, then fault detection is enabled, but the sensors are vulnerable to damage and have limited detection range
Solution Approach 1:
The patent implements a nested arrangement where the acoustic emission sensor is placed inside the cable protection housing, which itself is embedded in the ground surrounding the cable. This nested configuration provides multiple layers of protection for the sensor while maintaining its ability to detect cable faults. The sensor is protected from external damage by the housing, which is further protected by the surrounding soil, yet the sensor remains acoustically coupled to the cable through the housing structure.
4Difficulty of detecting and measuring
If cable faults are detected using traditional methods, then basic fault identification is possible, but precise location determination and fault type classification are difficult
Solution Approach 1:
The patent implements a feedback-based fault analysis system where the control unit receives acoustic emission signals from the sensor, processes them through analysis algorithms, and provides detailed feedback about fault location and type. The system continuously monitors acoustic signals and provides real-time feedback on cable condition, enabling precise fault localization and classification based on the characteristics of the acoustic emissions rather than relying on imprecise traditional detection methods.
Data Source
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AI summary
The present disclosure provides a cable protection device, including a sleeve provided with a cable duct and a locking barrel configured to sleeve outside the cable duct. An end of the cable duct is provided with a pressing arm and an opening slot adjacent to the pressing arm. An inner wall of the locking barrel is provided with a pressing bump capable of being inserted into the opening slot. The pressing bump is configured to rotate with the locking barrel to the outer side of the pressing arm to press the pressing arm to move inward. The present disclosure solves the technical problem that the cable is easy to be displaced in the cable protection device, resulting in failure of the cable.