油管油罐测温案例 Oil Pipeline and Tank Temperature Monitoring Cases
某石化企业大型原油罐区温度监测升级 Temperature Monitoring Upgrade for Large Crude Oil Tank Farm in a Petrochemical Enterprise
项目背景 Project Background
该企业拥有 10 座 10 万立方米大型原油储罐，夏季高温时曾出现储罐油气挥发量超标、罐壁局部过热的情况，存在泄漏与爆炸风险，原有定点监测无法覆盖全区域，异常发现滞后。 The enterprise has 10 large crude oil storage tanks of 100,000 cubic meters each. During high temperatures in summer, the tanks experienced excessive oil and gas evaporation and local overheating of tank walls, posing leakage and explosion risks. The original fixed-point monitoring could not cover the entire area, resulting in delayed detection of abnormalities.
监测方案 Monitoring Plan
采用 “分布式光纤测温 + 定点红外监测” 组合方案： Adopted a combined solution of "distributed fiber optic temperature measurement + fixed-point infrared monitoring":
- 为每座储罐罐壁、罐底敷设感温光纤，搭建 DTS 监测系统，实现全储罐温度连续监测，空间分辨率 1 米，测温精度 ±0.5℃； Lay temperature-sensitive optical fibers on the tank walls and bottoms of each storage tank, build a DTS monitoring system to achieve continuous temperature monitoring of the entire tank, with 1-meter spatial resolution and ±0.5℃ temperature measurement accuracy;
- 在储罐顶部、出料口等关键点位，加装红外温度传感器，辅助监测局部热点； Install infrared temperature sensors at key points such as tank tops and discharge ports to assist in monitoring local hotspots;
- 搭建罐区监控平台，实时展示储罐温度曲线，设置温度分级阈值（原油储罐正常温度区间 20℃~40℃，一级预警 45℃，二级告警 50℃），阈值触发后自动联动声光报警、短信推送。 Build a tank farm monitoring platform to display real-time tank temperature curves, set temperature grading thresholds (normal temperature range for crude oil tanks: 20℃~40℃, level 1 warning: 45℃, level 2 alarm: 50℃), and automatically trigger sound and light alarms and SMS notifications when thresholds are exceeded.
实施效果 Implementation Effect
系统投用后 6 个月内，精准识别 3 次罐壁局部过热异常（均由日照直射 + 罐体保温层破损导致），运维人员在 10 分钟内完成破损修复，避免了油气泄漏风险；同时，通过温度数据优化了储罐通风、喷淋降温策略，夏季油气挥发量降低 28%，年节约能源成本约 120 万元。 Within 6 months after the system was put into use, it accurately identified 3 cases of local overheating anomalies on tank walls (all caused by direct sunlight + damage to the tank insulation layer). Operation and maintenance personnel completed the damage repair within 10 minutes, avoiding oil and gas leakage risks. At the same time, through temperature data, the tank ventilation and spray cooling strategies were optimized, reducing summer oil and gas evaporation by 28% and saving approximately 1.2 million yuan in energy costs annually.
核心设备 Core Equipment
分布式光纤测温系统（DTS）、感温光纤。 Distributed fiber optic temperature measurement system (DTS), temperature-sensitive optical fiber.
工作原理 Working Principle
将感温光纤沿储罐罐壁、罐底螺旋敷设或平铺布置，激光在光纤中传播时产生拉曼散射，通过检测散射光的强度变化，实时计算光纤沿线每一点的温度，实现 “一根光纤覆盖全储罐” 的连续监测。 Lay temperature-sensitive optical fibers in a spiral or flat arrangement along the tank walls and bottoms. When laser light propagates through the optical fiber, Raman scattering occurs. By detecting changes in the intensity of scattered light, the temperature at each point along the optical fiber is calculated in real-time, achieving continuous monitoring with "one fiber covering the entire tank."
适用场景 Applicable Scenarios
大型原油储罐、化工品储罐，以及对安全等级要求极高的战略储备罐区。 Large crude oil storage tanks, chemical storage tanks, and strategic reserve tank farms with extremely high safety requirements.
优势 Advantages
无接触、抗电磁干扰（储罐区多为强电磁、易燃易爆环境）、监测范围广（单根光纤覆盖可达百米级）、可实现实时连续监测，精准定位异常温度区域。 Non-contact, anti-electromagnetic interference (tank areas are mostly strong electromagnetic, flammable and explosive environments), wide monitoring range (single fiber coverage can reach 100 meters), real-time continuous monitoring, and precise positioning of abnormal temperature areas.
