Water mist fire extinguishing system for main oil tank of steam turbine

The utility model belongs to the technical field of fire extinguishing, and particularly relates to a water mist fire extinguishing system for a main oil tank of a steam turbine, which comprises an oil tank body, and a controller, an alarm, a flame detector and a water mist spraying unit which are respectively arranged above the oil tank body, a temperature sensing optical cable is wound outside the oil tank body; the temperature sensing optical cable, the alarm, the flame detector and the water mist spraying unit are all connected with the controller. The utility model provides a water mist fire extinguishing system for a main oil tank of a steam turbine, which effectively avoids malfunction, and is stable in operation and low in cost. 本实用新型属于消防灭火技术领域，尤其涉及一种汽轮机主油箱细水雾灭火系统，包括油箱本体以及分别置于油箱本体上方的控制器、报警器、火焰探测器以及细水喷雾单元；所述油箱本体外部缠绕设置感温光缆；所述感温光缆、报警器、火焰探测器以及细水喷雾单元均与控制器相连。本实用新型提供一种汽轮机主油箱细水雾灭火系统，有效避免误动作，系统稳定运行，成本低。