How does the helium leak test connector achieve accurate detection of small helium leaks with its unique sealing structure design?
Publish Time: 2024-12-03
The helium leak test connector plays a key role in achieving accurate detection of small helium leaks. By designing a unique sealing structure, this connector can ensure high accuracy and reliability of the detection process.
1. Selection of sealing materials
High-strength, low-permeability materials: Choose materials with high strength and extremely low permeability, such as high-performance rubber (such as fluorine rubber, silicone rubber) or special alloys. These materials can effectively prevent the penetration of helium and ensure the reliability of the seal.
Temperature-resistant materials: In some applications, connectors may need to operate at different temperatures. Choose materials with good temperature resistance to ensure good sealing performance in high or low temperature environments.
2. Sealing structure design
Multi-stage sealing: The use of multi-stage sealing structure can significantly improve the sealing effect. For example, multiple sealing rings or gaskets can be designed to form a multi-level sealing barrier to ensure that even if a small leak occurs in one sealing link, other sealing links can effectively block the penetration of helium.
Dynamic seal: helium leak test connector For connectors that require frequent connection and disconnection, a dynamic seal design can be used. For example, spring-loaded sealing rings are used to ensure that good sealing contact is always maintained during connection and disconnection.
3. Precision machining and surface treatment
High-precision processing: Helium leak test connector uses high-precision processing technology (such as CNC processing, EDM electric discharge processing) to ensure the size and shape accuracy of each component of the connector, and reduce gaps and deviations during assembly.
Surface treatment: Perform surface treatment on the contact surface of the connector, such as polishing, plating or coating, to improve surface smoothness and anti-rust ability, and reduce the impact of surface defects on sealing performance.
4. Seal testing and verification
High-pressure test: High-pressure testing is performed on the connector before leaving the factory to simulate actual working conditions and detect its sealing performance under high pressure.
Helium leak test: helium leak test connector uses helium as the test medium, and uses high-sensitivity detection equipment such as mass flow meters or mass spectrometers to detect the helium leak rate of the connector to ensure that its leak rate is lower than the specified standard.
5. Connector design optimization
Integrated pressure balance structure: Design an integrated pressure balance structure to reduce the impact of internal and external pressure differences on the seal. For example, a pressure compensation device can be installed inside the connector to ensure that the sealing contact surface is always in optimal condition.
Anti-loosening design: Design an anti-loosening structure, such as a locking nut or anti-loosening washer, on the threaded connection part of the connector to prevent the connection from loosening under vibration or impact conditions and affecting the sealing performance.
6. Environmentally adaptable design
Anti-corrosion design: In some special environments, the connector may be exposed to corrosive media. Choose anti-corrosion materials or perform anti-corrosion treatments to ensure that the connector can still maintain good sealing performance in these environments.
Dust-proof and moisture-proof design: Design a dust-proof cover or sealing sleeve on the interface part of the connector to prevent dust and moisture from entering the connector and affecting the sealing performance.
Through the above design and manufacturing technology, the helium leak test connector can accurately detect small leaks of helium, ensuring high reliability and high-precision sealing performance in various applications.
