基于低轨卫星通信的LNG储罐监测管理系统研发

Design and Development of Wireless Remote Management System for LNG Tank Monitoring Terminal Based on LEO Communication Satellites

GIIGNL (国际液化天然气进口国联盟组织)的统计显示,2017年全世界LNG销售量增长了约10%,LNG槽车运输作为公认的相当可靠、成本最低的LNG陆运流运作模式,尤其是圆柱加方框冷保温集装箱,采用高真空多层绝热,运输具有很大的灵活性,可以克服新开辟的天然气市场折旧成本太高的缺陷,加快LNG的进一步应用。使得LNG储罐得到了快速的建造和发展[1]。然而当LNG储罐经过一些没有蜂窝网络的偏远地区或海上时,因基站信号无法覆盖,使得LNG储罐与外界隔离,信息和数据无法及时传达到远程监控中心,同时无人值守的LNG储罐监控终端在当前人力成本和管理成本较高的情况成为了一种发展趋势。针对偏远地区及远海的LNG储罐在管理和设备维护上存在困难的问题,本文设计了一种基于低轨卫星的LNG储罐监控终端远程管理系统,实现了LNG储罐数据的采集、基于低轨卫星的无线数据传输和数据远程分析、诊断和决策。经过实际调试和应用,验证了设计的可靠性,系统能够准确的采集、传输和分析LNG储罐数据,为偏远地区和远海的LNG储罐的管理和设备维护提供了高效和有力的支持。

According to the statistics data of GIIGNL (International Group of Liquefied Natural Gas Importers), global LNG sales record increased by 10% in 2017 which is benefit from LNG tanker transportation as a recognized and reliable and lowest cost LNG land flow operation mode. In particular, the cylindrical and boxed cold-insulated container adopts high-vacuum multi-layer insulation, and the transportation has great flexibility, which can overcome the defects of the newly-expanded natural gas market depreciation cost and accelerate the further application of LNG.As a result, LNG storage tanks have been rapidly built and developed [1]. When LNG storage tanks go through remote areas or seas without mobile networks, the LNG storage tanks are isolated from the outside world due to the failure of the base station signal to be covered. And the information data cannot be transmitted to the remote monitoring center, while the unattended LNG storage tanks have become a development trend of the currently situation of higher labor costs and management costs. In view of the difficult problems in management and equipment maintenance of LNG storage tanks in remote areas and the distant seas, this paper designs a remote management system for LNG storage tank monitoring terminals based on low orbit satellites, which realizes the collection of LNG storage tank data. That’s based on low wireless data transmission and remote analysis, diagnosis and decision making of orbiting satellites. After debugging and application, the reliability of the design is verified. The system can accurately collect, transmit and analyze LNG storage tank data, providing efficient support for the management and equipment maintenance of LNG storage tanks in remote areas and ocean.