Design and application of photoelectric auxiliary decision system for FPSO crude oil offloading
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摘要:
针对浮式生产储卸油装置（FPSO）串靠外输作业期间风浪流突变易造成FPSO与穿梭油轮发生大角度偏移，以及系泊大缆破损发生碰撞事故等问题，开发一套用于在FPSO外输作业期间实时监控风浪流、系泊大缆拉力、FPSO与穿梭油轮之间相对位置的系统。基于光学探测设备的监测数据，集成FPSO上已有的风浪流数据和系泊大缆拉力，采用数值模拟方法建立FPSO与穿梭油轮之间夹角的预测数学模型，实现系统实时监测、预测及预警等功能。现场测试结果表明：系统监测数据延迟≤0.5 s，距离测量误差≤0.4 m，夹角测量误差≤0.2°，120 s内夹角预测精度≥80%，满足工程应用需求，为实现FPSO外输作业智能化提供了技术参考。
Abstract:In view of the problem of wind-wave-current mutation of floating production storage and offloading (FPSO) during the offloading production that was easy to cause large angle deviation between FPSO and shuttle tanker, and other problems such as mooring hawser damage or collision accident, a system for real-time monitoring the wind-wave-current, mooring hawser tension and relative position between FPSO and shuttle tanker during the offloading production of FPSO was developed. Based on the monitoring data of optical detection equipment, integrating the existing wind-wave-current data and mooring hawser tension on FPSO, the numerical simulation method was used to establish the mathematical model of prediction of the relative included angle between FPSO and shuttle tanker, so that the functions of real-time monitoring, prediction and early warning of the system were realized. The field test results show that the monitoring data delay of the system is ≤0.5 s, the distance measurement error is ≤0.4 m, the included angle measurement error is ≤0.2°, and the prediction accuracy of included angle within 120 s is ≥80%, which meets the engineering application requirements and provides a technical reference for realizing the intellectualization of the FPSO tandem offloading.
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图 3 预测相对夹角曲线分析图
Figure 3. Analysis diagram of prediction curves for relative included angles
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图 4 预测相对距离、夹角曲线实时图
Figure 4. Real-time diagram of prediction curves for relative distances and included angles
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图 5 光电测量仪主机组成框图
Figure 5. Composition block diagram of photoelectric measuring instrument host
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图 6 光谱数据采集示意图
1.高光谱相机；2.辅助照明钨灯；3.油水混合物
Figure 6. Schematic diagram of spectral data acquisition
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