Fire-fighting spraying system for converter transformer of mobile transformer substation

The invention discloses a fire-fighting spraying system for a converter transformer of a mobile transformer substation. The system can more flexibly and reliably realize fire control. The system is characterized in that a bracket is fixedly connected to a vehicle body, a liquid nitrogen storage tank is fixedly connected to the bracket, the liquid nitrogen storage tank is connected to a dry powder storage tank through a liquid nitrogen pipeline. a control valve and a flow meter are arranged on the liquid nitrogen pipeline, the control valve and the flow meter are arranged on a control box, the control box is fixedly connected to the vehicle body, a filling port is formed in the top end of the dry powder storage tank, a pressure gauge and a safety valve are further arranged on the dry powder storage tank, a first output pipe is fixedly connected to the dry powder storage tank, the first output pipe is connected to a hose, the hose is wound on a winding drum, the winding drum is arranged on the vehicle body, and