The role of the thermal oil furnace is for the abnormalities that occur in the operation of the equipment can convey timely information to cut off the fuel, so that the equipment is safely out of service. The main instruments are: thermal oil outlet temperature alarm, thermal oil inlet and outlet differential pressure detector, flame out detector, wind pressure detection meter, fuel pressure detector, gas phase thermal oil furnace thermal oil pressure detector, fuel cut-off valve, spray media pressure drop detector. Used for combustion safety devices. The role of the thermal oil furnace is for the abnormalities that occur in the operation of the equipment to be able to communicate information in a timely manner, cut off the fuel, so that the equipment is safely out of operation.