High Speed Closing Switch Returning Rod Position Feedback
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Solution Overview
Problem
High speed closing switches face issues with defective movement of the movable electrode, leading to inadequate insulation and contact, making it difficult for workers to determine the electrode's position visually and reliably, and requiring separate sensors for counting operations, which degrades reliability.
Innovation Solution
A high speed closing switch design where a returning rod protrudes outside the case to indicate the movable electrode's position, and a mechanical counter driven by the returning rod counts the number of operations, allowing visual confirmation and reliable counting without the need for internal sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the movable electrode is positioned inside the case, then the insulating state is maintained, but the electrode position cannot be visually determined and requires separate sensors for operation counting
Solution Approach 1:
The returning rod serves as an intermediary element that transmits the position information of the movable electrode (which remains inside the case for insulation) to the outside environment. The rod protrudes from the case and moves synchronously with the electrode, allowing visual determination of electrode position without compromising the insulating state maintained by keeping the electrode inside the case.
2Productivity
If separate sensors are installed inside the case to detect electrode position and count operations, then operation counting is enabled, but the reliability degrades due to potential electrical disconnection affecting sensor performance
Solution Approach 1:
The patent replaces the electronic sensor-based operation counting system with a mechanical counter that is driven by the returning rod. The mechanical counter consists of counting members that are physically driven by the rod's movement, eliminating the need for electronic sensors inside the case and avoiding reliability issues related to electrical disconnection affecting sensor performance.
3Speed
If the movable electrode is moved at high speed, then the fault current is quickly grounded, but the movement may be defective leading to insufficient insulating distance or contact
Solution Approach 1:
The returning rod provides visual feedback about the electrode's position and movement status. By observing the rod's position outside the case, operators can determine whether the electrode has reached its intended position (open or closed state), enabling verification of proper operation and detection of any movement defects that might compromise insulating distance or contact reliability.
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
Enables easy visual determination of the movable electrode's position and reliable counting of operations, enhancing operational reliability and reducing the risk of electrical disconnection affecting sensor performance.
Implementation Method 1
a coil installed below the movable electrode and configured to generate electromagnetic force to cause the movable electrode to be moved from the first position to the second position
Data Source
AI summary
A high speed closing switch includes a case having an interior which is hermetically closed, a ground electrode installed within the case, a high voltage electrode spaced apart from the ground electrode by a predetermined interval, a movable electrode configured to move from a first position in which the ground electrode and the high voltage electrode are not connected to a second position in which the ground electrode and the high voltage electrode are connected, a coil configured to generate electromagnetic force to cause the movable electrode to be moved from the first position to the second position, a returning rod having one end fixedly connected to the movable electrode and the other end protruding to outside of the case, and a driving device configured to drive the returning rod such that the movable electrode is moved from the second position to the first position.