Corona-Free Cap Assembly With Clamping Member
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Solution Overview
Problem
Conventional corona-free cap devices require dismantling for installation, making electrical connection with transformer terminals inconvenient, especially when terminals are already connected with wires, due to their design that necessitates a larger outer diameter joint than the bore size of the cap.
Innovation Solution
A corona-free cap assembly featuring a clamping member that fixes onto the cylindrical end of the electrical device, allowing the cap to be detachably attached without using the bolt hole, utilizing a grading chamber and connection component with a through opening for the terminal to pass through, enabling uniform electrical stress distribution and easy installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional corona-free cap is designed with a connection interface that has the same size as the conductive panel, then the cap can be directly placed above the terminal for electrical connection, but the cap must be dismantled before installation, making the installation process inconvenient
Solution Approach 1:
The invention divides the corona-free cap assembly into two separate components: a cap body and a clamping member. The clamping member is installed on the terminal first, and then the cap body is attached to the clamping member. This segmentation allows the cap to be installed without dismantling, as the clamping member provides a separate mounting interface that does not interfere with the terminal connection process.
Solution Approach 2:
The clamping member serves as an intermediary component between the terminal and the cap body. It provides a mounting interface for the cap without requiring direct interaction with the terminal's conductive panel, thus avoiding the need to dismantle the cap during terminal installation.
2Adaptability or versatility
If the terminal is already connected with connecting wires before shipping, then the terminal cannot be installed through the corona-free cap's bore, causing installation difficulties due to size mismatch
Solution Approach 1:
By separating the mounting function (clamping member) from the cap body, the invention allows the terminal to be connected to the clamping member independently of the cap body. This enables terminals with pre-attached wires to be installed without needing to pass through the cap's bore, as the clamping member provides an alternative mounting path.
Solution Approach 2:
The clamping member acts as an intermediary that receives the terminal connection separately from the cap body. This intermediary structure allows terminals with various connection configurations (including pre-attached wires) to be mounted without interfering with the cap body's bore size requirements.
3Device complexity
If the corona-free cap uses the same bolt hole for both terminal connection and cap attachment, then the structure is simpler, but the terminal connection becomes inconvenient when wires are already connected
Solution Approach 1:
The invention separates the terminal connection interface (on the clamping member) from the cap attachment interface (on the cap body). This segmentation creates two independent functional interfaces: one for terminal connection and another for cap attachment, allowing both functions to be performed without interference and accommodating various installation scenarios.
Solution Approach 2:
The clamping member is designed with multi-functionality: it serves both as the terminal mounting base and as the attachment interface for the cap body. This universal component handles both terminal connection and cap attachment functions, providing installation adaptability while maintaining structural efficiency.
Data Source
AI summary
Disclosed is a corona-free cap assembly for achieving uniform electrical stress distribution around an electrical device having a cylindrical end, the corona-free cap assembly comprising: a clamping member configured for clamping on the cylindrical end along circumferential direction of the cylindrical end; and a corona-free cap comprising a grading chamber with two open ends, the corona-free cap further comprising a connection component fixed inside the grading chamber and adapted for connection with the clamping member in a manner that the corona-free cap is detachably fixed on the electrical device and the cylindrical end of the electrical device is at least partially extended into the grading chamber of the corona-free cap through one of the open ends.