SF6 Adapter with Self-Sealing Coupling for Leak-Free Testing
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Solution Overview
Problem
In medium- and high-voltage systems, existing connection adapters for pressure, density, or temperature measurement systems in SF6 gas-insulated switchgear face challenges such as gas leakage, operator errors, and inefficient sealing, which can lead to inaccurate measurements and environmental contamination.
Innovation Solution
A connection adapter with a self-sealing coupling and a shutoff device that allows for gas-tight blocking between process and measuring ports, enabling testing without additional connections and ensuring high sealing quality, reducing the risk of gas leakage and operator errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a connection adapter is used to connect process chamber to measuring system, then measurement capability is enabled, but gas leakage risk increases
Solution Approach 1:
The connection adapter is divided into separate functional sections: a process port connection section, a measuring port connection section, and an access port section. Each section can be independently sealed, allowing the measuring system to be tested through the access port while the process port remains sealed and connected to the process chamber, thus preventing gas leakage.
Solution Approach 2:
The access port serves as an intermediary port that provides a separate pathway for connecting testing equipment to the measuring system. This intermediary connection allows testing to be performed without directly connecting test equipment to the process chamber, thereby eliminating the gas leakage risk while maintaining measurement capability.
2Adaptability or versatility
If additional connections are made for testing measuring system, then testing capability is improved, but device complexity increases
Solution Approach 1:
The connection adapter incorporates multiple ports (process port, measuring port, and access port) that serve different functions. The access port specifically enables testing functionality without requiring additional external connections or modifications to the existing process chamber-measuring system connection, thus improving testing capability while maintaining simple device structure.
3Reliability
If shutoff device is used to block gas-tight connection, then sealing quality is improved, but operator error risk increases
Solution Approach 1:
The shutoff device is designed to automatically maintain gas-tight sealing when positioned in the closed state. The device structure itself provides the sealing mechanism through precision-machined mating surfaces and sealing elements that engage when the shutoff is in the closed position, ensuring reliable sealing without requiring additional operator actions or complex control systems.
Data Source
AI summary
A connection adapter for connecting a process chamber to a measuring system, in particular to a pressure, density or temperature measuring system, which includes at least three ports, having a process port, the process port being connected or connectable to the process chamber, a measuring port, the measuring system being connected or connectable to the measuring port, and an access port, which includes a self-sealing coupling. The connection adapter, furthermore includes a line system, having lines and at least one closable shutoff device. The line system connecting the process port to the measuring port and the access port, the connection between the process port and the measuring port being blockable gas-tight with the aid of the shutoff device, and the access port being connected or connectable to the measuring port via the line system. A measuring apparatus having a connection adapter is also provided.