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超导直流能源管道的混合工质温区温度测量研究

来源：电工电气发布时间：2024-10-09 09:09浏览次数：98

超导直流能源管道的混合工质温区温度测量研究

朱红亮^1,2，夏芳敏^1,2

(1 富通集团(天津)超导技术应用有限公司，天津 300384；

2 天津市超导电缆应用重点实验室，天津 300384)

摘要：为满足超导直流能源管道精准的测温需求，保证超导电力和液化天然气混合输运的目标，设计了一种低温工况平台，在混合工质温区(85～90 K)对光纤光栅传感器进行温度传感特性研究，通过 PT100 铂电阻对光纤光栅进行准确的温度标定，所测温度最大值偏差小于0.1K。搭建了 10 m 超导能源管道样机，实测在不同通流情况下，PT100 铂电阻测温波动较大，而光纤光栅测温不受影响。在突然升温过程中，PT100 铂电阻测温平均响应时间为2.43 s，光纤光栅传感器测温响应时间为0.47 s。

关键词： 超导；混合工质；光纤光栅；标定

中图分类号：TK311 ；TM26 文献标识码：A 文章编号：1007-3175(2024)09-0044-07

Research on Temperature Measurement in Mixed Working Fluid

Temperature Region of Superconducting DC Energy Pipelines

ZHU Hong-liang^{1, 2}, XIA Fang-min^{1, 2}

（1 Futong Group (Tianjin) Superconductor Technologies and Applications Co., Ltd, Tianjin 300384, China;

2 Tianjin Key Laboratory of Superconducting Cable Applications, Tianjin 300384, China）

Abstract: In order to meet the needs of accurate temperature measurement of superconducting DC energy pipelines, and to ensure the goal of hybrid transport of superconducting power and liquefied natural gas. In this paper, a low-temperature platform is designed to study the temperature sensing characteristics of the fiber grating sensor in the temperature region of mixed working fluid (85～90 K), and the temperature of the fiber grating is accurately calibrated by PT100 platinum resistance, and the maximum deviation of the measured temperature deviation is less than 0.1 K. Furthermore, a 10 m prototype of a superconducting energy pipeline is constructed and tested under various flow conditions. The results show that the temperature measurement by PT100 platinum resistance experiences significant fluctuations, whereas the fiber grating sensors remain unaffected. In the process of sudden temperature rise, the average response time of PT100 platinum resistance is 2.43 s, and that of fiber grating sensor is 0.47 s.

Key words: superconducting; mixed working fluid; fiber grating; calibration

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超导直流能源管道的混合工质温区温度测量研究