Bullet-Resistant Electrical Installation Tank Reinforcement
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Solution Overview
Problem
Electrical installations, such as transformers and inductors, are vulnerable to attacks from small arms and explosive charges, leading to potential energy supply disruptions due to pressure waves and leaks in liquid-filled tanks, with existing reinforcement methods weakening the structure and causing unintended shutdowns.
Innovation Solution
The side walls of electrical installations are reinforced with materials having a tensile strength greater than 1000 MPa, providing a penetration-inhibiting armor that envelops the exterior of the tank, distributed fastening elements absorb energy, and a layered panel design prevents penetration and reduces pressure waves, allowing for easy assembly and replacement of panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If protective plates are welded onto the side walls from the inside, then protection against mechanical effects is improved, but the protective reinforcement is weakened in the region of the welded seam
Solution Approach 1:
Instead of welding protective plates from the inside of the tank, the invention inverts the approach by providing protective reinforcement on the outside of the side walls. This external reinforcement avoids the welded seam weakness issue entirely, as the reinforcement is applied to the exterior surface where it can maintain full structural integrity without compromising the internal tank structure.
2Object-affected harmful factors
If the tank is reinforced with protective plates, then protection against bullets is improved, but pressure waves propagate in the liquid-filled tank causing safety devices to shut down the installation
Solution Approach 1:
The invention applies beforehand cushioning by providing energy-absorbing material between the external protective reinforcement and the tank wall. This cushioning layer is positioned in advance to absorb and dampen pressure waves generated by ballistic impacts, preventing them from propagating through the liquid-filled tank and triggering false shutdowns of safety devices while maintaining bullet resistance.
3Strength
If high tensile strength material is used for reinforcement, then penetration resistance is improved, but manufacturing and assembly complexity increases
Solution Approach 1:
The invention segments the protective reinforcement into multiple separate protective plates that can be manufactured independently using conventional steelmaking processes. Each plate can be produced with high tensile strength material (Rm > 1000 MPa) for penetration resistance, then assembled together with simpler fastening methods rather than requiring complex welding or monolithic manufacturing, thus reducing overall device complexity while maintaining strength.
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 protects electrical installations from bullet and fragment impacts, maintaining energy supply integrity during attacks by distributing energy absorption and reducing pressure wave intensity, enabling cost-effective and efficient protection against high-level ballistic threats.
Implementation Method 1
distributed fastening elements absorb energy, and a layered panel design prevents penetration and reduces pressure waves
Implementation Method 2
side walls are formed in a penetration-inhibiting manner and are made of a material having a tensile strength Rm greater than 1000 MPa
Data Source
AI summary
An electrical installation, in particular a transformer, phase shifter or inductor, which includes a fluid-filled tank having side walls, wherein, for protection against bombardment and/or fragmentation effects, the side walls are formed in a bullet-resistant manner and are made of a material having a traction strength of greater than 1000 MPa, or wherein a bullet-resistant reinforcement made of such a material is provided, the outer side of which envelope the side walls.