油罐内火焰快速探测系统研究

Study on a system for rapid detection of flame in tank

为填补目前油罐内火焰快速探测系统研究的空白,开发出一种基于紫外与红外的复合型储罐火焰探测器并研究探测器在罐顶的布置方式。首先,通过试验研究酒精和正庚烷的火焰传播特性;然后,根据试验中的火焰蔓延速度确定探测器的性能参数;最后,通过探测器的探测角度、探测距离和储罐的尺寸信息等设计探测器的布置方式。研究表明:常温常压下酒精和正庚烷的火焰蔓延速度分别为2.2～2.4 m/s和1.5～1.7 m/s,且不受油池尺度和液层厚度的影响;探测器的性能参数满足储罐火灾快速探测的要求;4种布置方式高效可靠。

In order to fill the gap in the research on the rapid flame detection systems for storage tanks,a composite tank flame detector based on ultraviolet and infrared was developed and modes were studied for arranging the detectors on the top of the tank.The flame propagation characteristics of alcohol and n-heptane were studied experimentally.The detector’s performance parameters were determined according to the data on the flame spread speed obtained in the experiments.Modes for arranging the detectors in storage tanks were designed in terms of detecting angle,detecting distance and dimensions of tanks.The results show that the flame propagation speeds of alcohol and n-heptane are 2.2-2.4 m/s and 1.5-1.7 m/s respectively at normal temperature and pressure,and the flame propagation speeds are not affected by the oil pool scale and the liquid layer thickness,and the detector’s performance parameters meet the requirements of tank fire rapid detection,and the four modes of arrangement are efficient and reliable.