一种适配微波等离子体焊接的导流保温装置
By designing a heat-conducting and heat-insulating device, the problems of low heat utilization and excessive temperature difference during microwave plasma welding of optical fiber preforms were solved, enabling highly reliable welding of large-diameter preforms, improving welding strength and efficiency, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN FEILING OPTOELECTRONICS TECH CO LTD
- Filing Date
- 2024-01-31
- Publication Date
- 2026-07-17
AI Technical Summary
When microwave plasma welding optical fiber preforms, the plasma hot jet velocity is too fast, and the welding cannot effectively absorb heat through heat conduction, resulting in the core of the preform not reaching a molten state. In addition, the thermal conductivity of large-diameter preforms is low, and the heat absorbed is insufficient. The temperature difference during welding is too large, making it difficult to guarantee the welding quality.
Design a flow guiding and heat preservation device adapted to microwave plasma welding, including a flow guiding and heat preservation section and a diameter reduction section. The flow guiding and heat preservation section surrounds and covers the welding end face of the preform rod. Through the guide gap of the microwave plasma torch, combined with multiple layers of quartz, graphite, aluminum silicate and stainless steel, a uniform hot flame flow is formed. The diameter reduction section and the flaring section are designed to improve heat utilization and welding efficiency.
This technology enables highly reliable welding of large-diameter preforms, reduces axial and radial temperature differences, improves welding strength, avoids contamination of fiber optic preforms and burn risks to operators, and lowers the cost of using plasma torches.
Smart Images
Figure CN118026516B_ABST