外贴式仪表在石油化工行业的应用与发展

Application and Development of External Instrument in Petrochemical Industry

摘要

随着石油化工行业对安全生产、环保节能要求的提高，外贴式仪表凭借非接触测量、免开孔安装、无泄漏风险等优势，成为储罐液位、温度监测的关键技术。基于技术应用与案例研究，梳理其工作原理、技术特点及应用效果，重点分析在原油储罐、高温汽化器、SIS系统等场景的创新应用，总结提升安全性、降低维护成本的价值，展望智能化、高精度化趋势。研究显示，外贴式仪表通过声呐测距、变频超声波等技术，解决传统仪表在易结晶、强腐蚀性介质中的测量难点及后期改造开孔难题，为行业技改升级提供关键支撑。

Abstract

With the petrochemical industry’s heightened demands for production safety and environmental protection, external-mounted instruments have emerged as a critical solution for tank level and temperature monitoring, thanks to their non-contact measurement, installation without drilling, and leak-proof advantages. Through technical applications and case studies, this paper elucidates their working principles, technical features, and practical outcomes, with a focus on innovative implementations in crude oil storage tanks, high-temperature vaporizers, and Safety Instrumented Systems (SIS). It highlights their value in enhancing safety and reducing maintenance costs, while anticipating trends toward intelligent and high-precision technologies. Research demonstrates that external-mounted instruments, utilizing sonar ranging and frequency-modulated ultrasonic technologies, overcome the measurement challenges of traditional instruments in crystalline or highly corrosive media, as well as the difficulties of post-installation modifications requiring drilling. These advancements provide crucial support for industrial technological upgrades.

关键词

石油化工 / 外贴式仪表 / 非接触测量 / 免开孔 / 技术创新

Key words

petrochemical industry / external-mounted instruments / non-contact measurement / hole-free / technological innovation

参考文献

[1] 中国石油和化学工业联合会. 2022年中国石油化工行业发展报告[R]. 北京, 2023.

[2] API 2350, Overfill Protection for Storage Tanks in Petroleum Facilities[S].

[3] 西安定华电子股份有限公司. ELL系列外贴式仪表技术手册[Z]. 2023.

[4] 李桂香. 外贴式仪表在石化装置SIS系统中的应用研究[J]. 自动化仪表, 2023, 44(2):1-6.