Auxetic Implosion Shielding for Power Line Blast Attenuation
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Solution Overview
Problem
Implosion devices used for joining electrical power line conductors generate significant audible noise, shock, and pressure waves during detonation, which can damage adjacent equipment and structures, and existing solutions do not effectively mitigate these external effects while maintaining mechanical and electrical integrity.
Innovation Solution
An implosion shielding device utilizing auxetic ballistic fabric to attenuate shock, sound, and fragmentation waves, which can be temporarily deployed around the implosion sleeve to reduce the external impact of detonation and protect adjacent tools, equipment, and structures, and is designed to withstand multiple implosion events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an implosion device is used to join electrical power line conductors, then mechanical and electrical integrity is achieved, but significant audible noise, shock, and pressure waves are generated that can damage adjacent equipment and structures
Solution Approach 1:
A protective shield made of auxetic ballistic fabric is positioned between the implosion device and adjacent equipment/structures. The shield acts as an intermediary that absorbs and attenuates shock waves, pressure waves, and fragmentation debris, preventing these harmful factors from reaching and damaging adjacent equipment while allowing the implosion device to perform its joining function
Solution Approach 2:
The protective shield utilizes auxetic ballistic fabric, which is a composite material with negative Poisson's ratio properties. This material combines high strength, energy absorption capabilities, and fragmentation resistance, enabling it to effectively mitigate the harmful effects of the implosion detonation while maintaining structural integrity
2Object-affected harmful factors
If a protective shield is added around the implosion device, then adjacent equipment and structures are protected from blast effects, but device complexity increases
Solution Approach 1:
The protective shield is constructed from flexible auxetic ballistic fabric rather than rigid structures. This flexible film approach provides effective blast protection while being easier to deploy, install, and remove compared to rigid shielding systems, thereby reducing the overall complexity of the protective system
Solution Approach 2:
The protective shield is designed as a temporary, single-use component that is deployed only during the implosion joining operation. After use, the shield is discarded rather than recovered or reused, simplifying the system design by eliminating the need for complex recovery, storage, or maintenance infrastructure
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 implosion shielding device effectively reduces the amplitude of shock, sound, and pressure waves, protecting adjacent structures and equipment from the blast while maintaining the mechanical and electrical connection of the conductors, and can be reused for multiple implosion events.
Implementation Method 1
An implosion protective shield that incorporates, in whole or in part, auxetic ballistic fabric for improved ballistic resistance and improved detonation shock and sound wave attenuation
Implementation Method 2
auxetic ballistic fabric for improved ballistic resistance and improved detonation shock and sound wave attenuation
Data Source
AI summary
An implosion shield of ballistic fabric adapted to mount so as to surround an implosion sleeve or dead-end on a power line. The implosion shield may be wrapped or formed as an envelope or tent including one piece and folded around the implosion sleeve or dead-end and secured with fasteners. A method of installing the implosion cover may include installing an implosion sleeve or dead-end on a power line, and then installing the implosion shield around the implosion sleeve or dead-end, by wrapping the implosion shield around the implosion sleeve or dead-end, or by securing an envelope implosion shield over the implosion sleeve or dead-end, or by draping the shield over the implosion sleeve or dead-end, or by mounting the shield on a frame over the implosion sleeve or dead-end, then detonating the implosion sleeve or dead-end. The implosion shield attenuates shock, pressure and sound waves from the detonation.