Gas Insulated Switchgear Movable Conductor Screw Axis Design
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Solution Overview
Problem
Conventional gas insulated switchgear designs face challenges in minimizing size and optimizing movement mechanisms for efficient operation and maintenance, particularly in achieving reliable electrical connections and arc resistance.
Innovation Solution
The design incorporates a movable conductor that rotates along an axis formed by a screw, with one side bent at a right angle to contact the first fixed conductor and another side to the second fixed conductor, ensuring constant electrical connection and arc resistance through the use of arc-resisting materials at the contact region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional gas insulated switchgear designs are used, then reliable electrical connections and arc resistance are achieved, but the size and complexity of the device increases
Solution Approach 1:
The movable conductor is divided into multiple segments or sections, each capable of independent movement along the axis. This segmentation allows the conductor to achieve reliable electrical connections at different positions without requiring a complex overall movement mechanism, thereby reducing device complexity while maintaining functionality
Solution Approach 2:
The movable conductor is designed to dynamically adjust its position along the axis formed by the screw, transitioning between different electrical connection states. This dynamic capability allows the system to maintain reliable connections while using a simpler mechanical structure compared to conventional fixed or multi-position mechanisms
2Reliability
If the movable conductor is designed with right angle bends to contact both fixed conductors, then electrical connection reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The movable conductor features localized right-angle bends at specific positions to contact the first and second fixed conductors. By concentrating the bending requirements at specific local points rather than requiring the entire conductor to be precisely formed, the manufacturing precision requirement is reduced while maintaining reliable electrical connections at the contact points
Solution Approach 2:
The screw-formed axis acts as an intermediary guide for the movable conductor, defining the movement path and contact positions. This intermediary structure reduces the manufacturing precision requirements for the conductor bends themselves, as the screw axis provides the reference framework for achieving reliable electrical connections
3Reliability
If arc-resisting materials are applied at contact regions, then arc resistance is enhanced, but manufacturing complexity increases
Solution Approach 1:
Arc-resisting materials are applied only at the specific contact regions where electrical connections are made, rather than coating the entire conductor. This localized application reduces material costs and manufacturing complexity while providing sufficient arc resistance protection at the critical contact points
Solution Approach 2:
The contact regions utilize composite structures combining base conductor materials with arc-resisting material coatings or overlays. This composite approach enhances arc resistance at the contact surfaces while keeping the overall manufacturing process relatively simple by applying materials only where needed
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
This configuration allows for a compact gas insulated switchgear with simplified operation and maintenance, enabling effective electrical connections and minimizing size compared to conventional designs while providing enhanced arc resistance.
Implementation Method 1
a screw configured to form an axis on inner of the enclosure and being spaced apart from the first and second fixed conductors and a movable conductor configured to move along the axis through a rotation of the screw
Implementation Method 2
A contact region of the first fixed conductor and the movable conductor may be welded or combined with an arc-resisting material
Data Source
AI summary
A gas insulated switchgear includes an enclosure, a first fixed conductor, one side of the first fixed conductor being bent at a right angle and another side of the first fixed conductor being fixed on one side of the enclosure, a second fixed conductor configured to be spaced apart from the first fixed conductor and configured to be fixed on another side of the enclosure, a screw configured to form an axis on inner of the enclosure and being spaced apart from the first and second fixed conductors and a movable conductor configured to move along the axis through a rotation of the screw, one side of the movable conductor being in contact with the second fixed conductor.