微纳磁性介质密封装置和泄漏率检测方法
By welding the sealing pole shoe to the outer shell gap and using a helium mass spectrometer leak detector, the error problem of detecting the leakage rate of magnetic liquid seals under low temperature conditions was solved, and accurate detection of micro-nano magnetic media seals was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TSINGHUA UNIVERSITY
- Filing Date
- 2025-05-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies, under extreme conditions such as low temperatures, cause errors in the detection results of magnetic liquid seal leakage rate due to leakage of static sealing components, making it impossible to accurately detect the leakage rate of micro-nano magnetic media seals.
The gap between the pole shoe and the outer shell is sealed by welding. A helium mass spectrometer leak detector is used to detect gas leaks on the low-pressure side. A multi-step detection method is used to ensure the accuracy of the detection and to seal the leakage channel at the rubber ring seal.
It improves the detection accuracy of micro-nano magnetic media seals under extreme working conditions, provides a stable and reliable basis for operation, and ensures the accuracy of detection results.
Smart Images
Figure CN120608957B_ABST