High-Voltage Fuse Ring Heat-Sealing Structure Against Separation
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Solution Overview
Problem
High voltage fuses face issues with ring separation due to heat deformation, leading to unstable coupling and potential fire hazards, and existing solutions like silica sand filling are cumbersome and incomplete, affecting fire extinguishing performance.
Innovation Solution
A high voltage fuse design featuring a cylindrical housing with heat-sealing grooves and guide ribs that heat-seal rings to the housing ends, preventing separation by forming a stable and secure connection through acute and gentle inclines, and providing an escape groove for heat-sealing overflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If coupling rings are inserted into housing ends to fix the housing, then the housing ends are secured, but the coupling rings may separate from the housing due to heat deformation
Solution Approach 1:
The end circumference of the housing is divided into multiple heat-sealing locations, with heat-sealing grooves formed at these segmented positions. This segmentation allows the ring to be securely bonded at multiple discrete points around the circumference, distributing the thermal stress and preventing separation while maintaining coupling strength.
Solution Approach 2:
The mechanical insertion and pressing coupling method is replaced with a heat-sealing process. The heat-sealing grooves enable thermal bonding between the ring and housing, substituting the purely mechanical coupling with a thermally-activated chemical/physical bond that resists heat deformation better than mechanical friction alone.
2Object-affected harmful factors
If silica sand is filled in the housing space to surround the fuse element, then arc interruption and fire extinguishing performance are improved, but the filling process is cumbersome and may leave empty spaces
Solution Approach 1:
The heat-sealing grooves are formed on the housing end surfaces before the ring is installed and heat-sealed. This preliminary preparation ensures that the sealing structure is in place before final assembly, allowing for easier and more complete filling of silica sand without worrying about post-assembly access or incomplete filling due to timing constraints.
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 design effectively prevents ring separation from the housing due to heat deformation, ensuring stable coupling and enhanced fire extinguishing performance by maintaining a secure heat-sealing connection and preventing overflow.
Implementation Method 1
a pair of rings which are insertedly coupled to end circumferences of the housing and heat-sealed at multiple locations
Data Source
AI summary
There is disclosed a high voltage fuse having a ring separation prevention structure comprising a housing comprising a first housing body and a second housing body which are coupled to each other and formed in a cylindrical shape; a fuse element disposed in the housing; a pair of connectors which are project from both ends of the housing and connected to the fuse element; and a pair of rings which are insertedly coupled to end circumferences of the housing and heat-sealed at multiple locations.