Hazardous gas leakage detection alarm device

The invention provides a hazardous gas leakage detection alarm device. The device comprises a transverse pipe and a vertical pipe. A bent pipe is connected between the left end of the transverse pipeand the upper end of the vertical pipe. The transverse pipe and the vertical pipe are vertically arranged. The transverse pipe is sleeved by an upper lantern ring. The vertical pipe is sleeved by a left lantern ring. The lower end of the upper lantern ring is fixedly connected with a vertical plate. The right end of the left lantern ring is connected with a transverse plate. The lower end of the vertical plate is fixedly connected with the right end of the transverse plate. Detection boxes are installed on the upper side of the transverse plate and the left side of the vertical plate. The structure is simple and clear and easy to understand. Suction fans are installed above and on the left side of the detection boxes to suck gas near the transverse pipe and the vertical pipe, so that the detection range is enlarged. A pollutant detector in each detection box sucks in surrounding gas through a gas inlet pipe. If each detector detects that hazardous gas exceeds the standard, a signal istransmitted to a controller through a sensor, and the controller controls an alarm lamp to be turned on. Leakage troubleshooting is carried out. Troubleshooting is carried out within the range of eachdetection box. The operation is easy.