A method and device for detecting water leakage of a converter valve and a converter valve system
By using a composite optical source and a beam splitter in the converter valve system to decompose the optical signal into different wavelengths, and combining multimode optical fiber and light-shielding plate technology, the problems of high cost and difficult maintenance of converter valve leakage detection are solved, and efficient and low-cost leakage detection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DC TECHNICAL CENTER OF STATE GRID CORP OF CHINA
- Filing Date
- 2026-04-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for detecting leaks in converter valves are costly and difficult to maintain when there are many detection points. They also require a large amount of fiber optic cables, involve complex wiring, have poor flexibility, and have a high failure rate.
A composite optical source and a beam splitter are used to decompose the optical signal into different wavelengths on the valve control side. The signal is then transmitted to the single-wavelength trigger and feedback optical fiber on the valve side via multimode optical fiber. Combined with a light shield, the optical signal is blocked, simplifying the optical fiber wiring and allowing for flexible adjustment of the detection points.
It reduces the amount of light source and fiber optic cable used, simplifies the device structure, reduces maintenance difficulty and cost, improves the cost-effectiveness and reliability of the device, and adapts to leak detection of different scales and accuracies.
Smart Images
Figure CN122409072A_ABST