Steam fire-extinguishing device of sealed leakage point of hot oil pump

The utility model provides a steam fire-extinguishing device of a sealed leakage point of a hot oil pump; the steam fire-extinguishing device comprises a main steam pipe, a steam hydrophobic valve, an electric valve, two branch steam pipes, a flame sensor, an alarm and a controller; the main steam pipe is connected with the tops of the two branch steam pipes; the steam hydrophobic valve and the electric valve are connected onto the main steam pipe in series; a plurality of nozzles are arranged at the opposite sides of the two branch steam pipes in equal distances; both the bottoms of the two branch steam pipes have weep holes; a flexible metal pipe is arranged at the joint of the main steam pipe and the branch steam pipes; a high-temperature protective layer is arranged in the flexible metal pipe; the flame sensor is installed at the tail end of the flexible metal pipe; a signal line of the flame sensor is penetrated in the high-temperature protective layer; and the controller is connected with the alarm, the electric valve and the flame sensor respectively. The steam fire-extinguishing device of the sealed leakage point of the hot oil pump disclosed by the utility model is capable of detecting fire behaviour in real time and extinguishing fire by using steam; materials are easily available; furthermore, the fire-extinguishing efficiency is high.