Explosion-Proof Inductive Voltage Transformer with Shock Mitigation
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Solution Overview
Problem
Inductive voltage transformers (IVTs) are prone to explosions due to electrical failures such as short circuits, ferroresonance, power surges, or internal arc discharges, leading to partial or complete destruction, and existing solutions are costly, complex to install, and do not adequately protect the transformer.
Innovation Solution
An explosion-proof IVT design featuring a high voltage section that limits and insulates high voltage, with a voltage transforming section contained in an insulation body and equipped with shock mitigation means, including hollow sections to direct gases and shockwaves away from critical components, reducing damage during electrical failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If special chambers or capsules are installed to protect against explosions, then protection of nearby facilities is improved, but device complexity and manufacturing cost increase significantly
Solution Approach 1:
The transformer housing is segmented into multiple chambers separated by partition walls. The hollow chamber is specifically designed to receive and contain explosion products, separating them from other components. This segmentation allows the explosion containment function to be integrated into the existing housing structure rather than requiring external protective chambers.
Solution Approach 2:
The explosion protection function is merged with the transformer housing structure itself. The hollow chamber and partition walls are integrated into the housing design, combining the protective function with the structural enclosure. This eliminates the need for separate external protective chambers while maintaining explosion containment capability.
2Object-affected harmful factors
If special protective chambers are installed, then explosion protection is improved, but manufacturing and installation cost increase
Solution Approach 1:
The explosion protection features (hollow chamber, partition walls) are merged into the standard transformer housing manufacturing process. This integration allows explosion protection to be produced alongside the main transformer components using existing tooling and processes, eliminating the need for separate manufacturing and installation of protective chambers.
Solution Approach 2:
The housing structure serves multiple functions: it provides mechanical enclosure, thermal management, and explosion containment. The hollow chamber and partitions are designed to fulfill both structural and protective roles, making the design universally applicable to transformer housing without requiring specialized components.
3Object-affected harmful factors
If external protective chambers are used, then nearby facilities are protected, but the transformer itself remains vulnerable to destruction
Solution Approach 1:
The internal housing is segmented into functional zones using partition walls. Critical components such as the core and windings are isolated in protected zones, while the hollow chamber is positioned to absorb explosion energy. This segmentation ensures that explosion forces are contained and directed away from vulnerable components.
Solution Approach 2:
The hollow chamber is pre-positioned and designed to receive explosion products before they can damage critical components. The chamber acts as a pre-prepared cushioning space that absorbs explosion energy and directs gases away from the transformer core and windings, protecting them from mechanical damage.
4Object-affected harmful factors
If complex protective structures are installed, then explosion protection is improved, but installation difficulty and time increase
Solution Approach 1:
The explosion protection features are merged into the housing manufacturing process, allowing the protective structure to be produced as an integrated component. This eliminates the need for complex field assembly of separate protective chambers, reducing installation complexity to simple housing assembly operations.
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 provides a cost-effective and easy-to-install IVT that mitigates damage from electrical failures, preventing partial or total destruction by directing explosion gases and shockwaves away from the transformer, thus enhancing its protection and reducing installation complexity.
Implementation Method 1
direct the gases and shockwave of the explosion towards the hollow section, thereby reducing the damage caused by the explosion
Data Source
AI summary
An explosion-proof inductive voltage transformer (IVT) of the type comprising: i) a high voltage section that receives a high voltage current, limits and insulates the high voltage current to be transformed and reduces its electrical stress; and, ii) a voltage transforming section connected to the high voltage section and contained in an insulation body in order to protect the elements of the voltage transforming section and reduce the impact of explosions in case of electrical failure, wherein the voltage transforming section comprises means for reducing the voltage of the high voltage current to a low voltage and electric transmission means that transmit a resulting low voltage current to a low voltage distribution line; wherein the voltage transforming section of the IVT further comprises shock mitigation means comprising at least one hollow section located opposite the high voltage section that, during an electrical failure causing an explosion, direct the gases and shockwave of the explosion towards the hollow section, thereby reducing the damage caused by the explosion to the IV transformer and its surroundings; provides an explosion-proof inductive voltage transformer easy to install and with a low cost manufacture.