Visual inspection of pressure and flow rate of fuel oil heating furnace used for packaging steel strip

Visual inspection of pressure and flow rate of fuel oil heating furnace used for packaging steel strip
　　 Observe the gas pressure in front of the furnace. The gas pressure and the flow rate are proportional to each other. The pressure is large and the flow is large, and the pressure is small and the flow is small. When the furnace temperature does not meet the process requirements, observe the operating pressure gauge. If the gas pressure is lower than the fixed pressure, the heating capacity will not reach the design capacity, resulting in low furnace temperature. In most cases, it is caused by water accumulation in the pipeline or Caused by tar clogging.
　　 Observe the oil pressure in front of the nozzle. The minimum rated oil pressure must be guaranteed during the operation of the furnace. If it is observed that the combustion situation is not good, the fuel supply is insufficient and the furnace temperature is low, there may be a problem of insufficient oil pressure. For this reason, check whether the filter, heater, shut-off valve, pipeline, etc. are blocked, and whether the opening degree of the oil return valve is too small.
　　 Observe the air flow and pressure in the furnace. For furnaces that require slight positive pressure at the bottom of the furnace, it is generally appropriate for the furnace gas to slightly overflow at the bottom of the furnace door. If there is a large amount of fire and burning at the door of the furnace, it indicates that the fuel consumption is too large and the burner is not working well. The method to adjust the furnace pressure is to first adjust the burner and flue gate, and the position and angle of the burner are unreasonable, and the exhaust port is blocked or too small, which will also cause the furnace door to spit fire.
　　 Observe wind pressure and scenery. The blower should be able to meet the air pressure and air volume required for the maximum heating of the furnace, so that the fuel can be fully burned. When the deterioration of the burner or oil nozzle is observed, the opening degree of the flapper valve and the actual output of the blower should be observed. Pay attention to the influence of blower speed on wind pressure and air volume.