High-Voltage Cable Plug Radial Protective Element
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Solution Overview
Problem
High-voltage cable connectors face challenges in maintaining axial alignment during plugging and unplugging, especially in limited spaces, which can lead to damage and reduce operational reliability due to the risk of the metallic end striking the socket element.
Innovation Solution
A high-voltage cable connector with a protective element made of an electrically insulating material, such as thermoplastic polyoxymethylene, that protrudes radially and has a low coefficient of sliding friction, preventing the metallic end from contacting the socket element by forming an angle greater than the cone angle of the insulating part, thus reducing the risk of damage and ensuring reliable contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a metallic end is used for electrical contact, then electrical conductivity is improved, but the risk of mechanical damage to the socket element increases
Solution Approach 1:
The patent introduces a protective element as an intermediary component between the metallic end and the socket element. This protective element is made of a material with low sliding friction and protrudes radially to prevent direct contact between the metallic end and the socket element during plugging and unplugging operations, thereby eliminating mechanical damage while maintaining electrical conductivity through the metallic end.
2Manufacturing precision
If axial alignment aids like pulley blocks are used, then alignment precision is improved, but device complexity and ease of operation in limited spaces deteriorates
Solution Approach 1:
The patent extracts the alignment function from separate external aids (like pulley blocks) and integrates it into the cable connector itself through the geometric relationship between the conical insulating part and the radially protruding protective element. This self-aligning mechanism eliminates the need for additional alignment devices, reducing complexity while maintaining alignment precision.
3Object-affected harmful factors
If the protective element protrudes radially to prevent contact, then mechanical protection is improved, but the angle between alignment line and longitudinal axis must be greater than cone angle
Solution Approach 1:
The patent changes the geometric parameters of the protective element, specifically its radial protrusion distance and the angle it forms with the longitudinal axis. By ensuring this angle is greater than the cone angle of the insulating part, the design creates a self-aligning mechanism where the protective element naturally guides the connector into proper alignment during insertion, converting a potential precision requirement into a self-correcting geometric relationship.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents mechanical damage and maintains operational reliability by ensuring the metallic end does not strike the socket element, even at high operating temperatures, and is suitable for high-voltage applications above 72.5 kV.
Implementation Method 1
A high-voltage cable connector with a protective element made of an electrically insulating material, such as thermoplastic polyoxymethylene, that protrudes radially and has a low coefficient of sliding friction
Data Source
Figure 1
Figure 2
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AI summary
The invention relates to a high-voltage cable plug (1) for installing on an end of a high-voltage cable (20), wherein the high-voltage cable plug (1) has an insulating part (14) that can be attached to the end of the high-voltage cable (20), which insulating part is cone-shaped at least in some sections on the outer surface of the insulating part and can be brought into electrically tight contact with a socket element (2) associated with the high-voltage cable plug (1) when the plug-in connection is established, wherein the high-voltage cable plug (1) has a protective element (40) at or near the end of the high-voltage cable plug facing the socket element (2), which protective element protrudes beyond the end of the high-voltage cable plug (1) facing the socket element (2) in a radial direction, with respect to a longitudinal axis (10) of the high-voltage cable plug (1), to such an extent that the protective element (40) prevents damage to the high-voltage cable plug (1) or to the socket element (2) when the high-voltage cable plug (1) is inserted into and removed from the socket element (2).