Thermoelectric Vacuum Sensor Integration for High-Temperature Arc Chambers
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Solution Overview
Problem
Conventional vacuum degree detection devices struggle with high temperature resistance, leading to reduced detection accuracy and a inability to be implanted in vacuum arc-extinguishing chambers during manufacturing, which requires high temperatures.
Innovation Solution
A vacuum degree detection device utilizing a thermoelectric vacuum sensor with high temperature resistant materials, integrated into a circular ring structure that can withstand high temperatures during the manufacturing process of vacuum arc-extinguishing chambers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vacuum degree detection devices are used, then the device structure is simple and easy to manufacture, but the device cannot withstand high temperatures and detection accuracy is reduced
Solution Approach 1:
The patent employs composite material construction for the detection device, combining high-temperature resistant materials (such as ceramic coatings or heat-resistant alloys) with standard vacuum gauge components. This allows the device to withstand baking temperatures of 800-900°C while maintaining its detection functionality, resolving the contradiction between temperature resistance and structural simplicity.
Solution Approach 2:
The detection device is divided into distinct functional modules: a high-temperature resistant protective structure, a vacuum gauge sensing element, and connection components. This segmentation allows each part to be optimized independently - the protective structure handles thermal stress while the sensing element maintains detection accuracy, reducing overall system complexity.
2Ease of manufacture
If conventional detection devices are used, then the device can be easily manufactured, but the device cannot be implanted in the arc-extinguishing chamber when it leaves the factory
Solution Approach 1:
The detection device is pre-installed and sealed into the arc-extinguishing chamber during the factory manufacturing process, before the chamber undergoes baking and exhaustive treatment. This preliminary installation ensures the device is protected from high temperatures either by the sealing structure or by using high-temperature resistant materials, enabling both easy implantation and temperature withstand capability.
Solution Approach 2:
A high-temperature resistant sealing structure or protective barrier is introduced as an intermediary between the detection device and the high-temperature environment. This intermediary protects the device during the baking process while allowing it to be installed using conventional methods, resolving the contradiction between ease of manufacture and temperature resistance.
3Measurement precision
If off-line detection is used, then the detection device can operate at standard temperatures, but real-time monitoring cannot be achieved
Solution Approach 1:
The patent employs a high-temperature resistant detection device that can withstand the baking process, eliminating the need for post-installation replacements. Although the device uses specialized materials, its ability to survive the manufacturing process and provide continuous real-time monitoring eliminates the time loss associated with offline detection and reinstallation, achieving both accuracy and timely monitoring.
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 solution enables real-time, accurate vacuum degree monitoring within vacuum arc-extinguishing chambers, even during high-temperature manufacturing processes, ensuring reliable performance and extended device lifespan.
Implementation Method 1
the temperature difference power generation device includes a plurality of pairs of thermoelectric arms, and thermal resistance of the temperature difference power generation device is formed by thermal resistance of the thermoelectric arms
Implementation Method 2
the temperature difference power generation device includes a plurality of pairs of thermoelectric arms
Data Source
AI summary
The present disclosure discloses a vacuum degree detection device, a monitoring system and a vacuum arc-extinguishing chamber thereof, wherein, in the vacuum degree detection device, a ceramic insulating housing is sealingly fixed to an end face cover plate of the vacuum arc-extinguishing chamber, the ceramic insulating housing is a circular ring-shaped structure coaxial with a conductive rod on the end face cover plate, a sealing area formed by the end face cover plate and the ceramic insulating housing is provided with a through hole communicating with the vacuum arc-extinguishing chamber; a thermoelectric vacuum sensor is disposed inside the ceramic insulating housing to detect the vacuum degree of the vacuum arc-extinguishing chamber, a cold end is fixed to the end face cover plate, an electrode is supported on the cold end, a thermoelectric arm is supported on the electrode, a hot end is laminated to the thermoelectric arm.