一种改进型荧光测温光纤定位保护固定锁紧装置
By using an improved optical fiber positioning and protection locking device for fluorescent temperature measurement, the problems of accuracy and reliability in measuring the junction temperature of optically controlled thyristors have been solved. Stable temperature measurement has been achieved under high pressure and complex harmonic environments, protecting the optical fiber from damage and improving the accuracy and safety of temperature measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN PERI POWER SEMICONDUCTOR CONVERSION TECHNOLOGY CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to accurately measure the junction temperature of optically controlled thyristors in railway automatic phase-splitting systems. Furthermore, fluorescent temperature measuring devices are prone to damaging optical fibers during installation, are complex to disassemble, and are unsuitable for high-voltage and complex harmonic environments, resulting in poor reliability and safety in temperature measurement.
The device employs a combination of thermally conductive silicone caps, fluorescent fiber protective guide tubes, shape memory metal spring washers, locking device fixing bases, fluorescent fiber bending sheaths, and threaded fixing caps to ensure accurate positioning and fixation of the fluorescent fiber, reduce contact thermal resistance, prevent friction damage and detachment, and adapt to high voltage and harmonic environments.
It enables accurate measurement of the junction temperature of optically controlled thyristors, reduces temperature measurement errors, improves the reliability and timeliness of temperature measurement, protects optical fibers from damage, prevents displacement and detachment caused by electrodynamic vibration and thermal expansion, and enhances the accuracy and safety of temperature measurement in high-voltage and complex harmonic environments.
Smart Images
Figure CN224517963U_ABST
Abstract
Claims
1. An improved temperature measuring optical fiber positioning protection fixing locking device, characterized in that, The assembly includes a thermally conductive silicone cap (1), a fluorescent optical fiber protective guide tube (2), a memory metal spring washer (3), a locking device fixing base (4), a fluorescent optical fiber bending sheath (5), a fluorescent optical fiber locking claw (6), and a threaded fixing cap (7). The memory metal spring washer (3) is fitted onto the side of the threaded joint of the locking device fixing base (4) with the smaller diameter. The thermally conductive silicone cap (1) is fitted onto the fluorescent optical fiber protective guide tube (2). After the temperature-sensing guide protrudes from the tube, the fluorescent optical fiber protective guide tube (2) is inserted into the locking device fixing base (4). The fluorescent optical fiber locking claw (6) is fitted onto the fluorescent optical fiber bending sheath (5), and then the threaded fixing cap (7) is fitted onto it to form an assembly. The assembly is then aligned with the locking device fixing base (4), and the threaded fixing cap (7) is rotated to fix the assembly onto the locking device fixing base (4).
2. The improved locking device for positioning, protecting and fixing the fiber-optic temperature measuring probe according to claim 1, characterized in that The combination of fluorescent fiber optic protective guide tube (2), locking device fixing base (4) and memory metal spring washer (3) is installed on the temperature measuring channel opening of the central temperature measuring channel radiator (8) and tightened with a plate until the memory metal spring washer (3) is flattened.
3. The improved locking device for positioning, protecting and fixing the fiber-optic temperature measuring probe according to claim 2, characterized in that Align the temperature measuring part of the fluorescent temperature measuring fiber (10) with the channel of the fluorescent fiber bending sheath (5) of the positioning protection fixing locking device (9), insert the temperature measuring head of the fluorescent temperature measuring fiber (10) until the temperature measuring head of the fluorescent temperature measuring fiber (10) is fully in contact with the thermal conductive silicone cap (1) and in close contact with the end of the temperature measuring hole of the central temperature measuring channel radiator 8, tighten the thread fixing cap (7) to fix the fluorescent temperature measuring fiber (10), connect the ST connector part (12) of the fluorescent temperature measuring fiber (10) to the temperature control box (11), and the junction temperature can be measured after powering on.