How to deal with large resistance in electric boiler system

1. Check the boiler's pressure gauge, water level gauge, safety valve, sewage collector, water supply valve, steam valve, etc. to ensure they meet performance requirements and that all other valves are intact. Gas-fired hot water boilers offer significant advantages such as environmental friendliness, energy saving, safety, and fully automatic operation. They are also very convenient to use. Furthermore, fuel-fired boilers are becoming increasingly popular due to economic benefits and government policies.

2. The boiler's automatic control system includes flame detectors, water level and temperature sensors, alarms, and various interlocking devices to monitor the performance status of the control system and ensure compliance with requirements.

This situation is even more pronounced when fuel-fired boilers have different capacities. In the improved system, each boiler has its own main steam pressure regulator, which uses a proportional regulator. The proportional band can be set based on the load capacity of each boiler, without affecting each other. The original system's fuel regulation subsystem's main circuit is non-differential. The improved system's fuel regulation subsystem's main circuit is differential. When the main pressure is outside the rated range, the pressure setpoint of each boiler is adjusted to maintain the pilot pressure.

The fuel-fired boiler system has high resistance and insufficient air supply. The reason is that the fuel particles are mixed, and the pulverized coal fills the gaps between the lumps. When entering the grate, it is squeezed by the gate, resulting in poor air permeability. First, this large coal cannot be burned. Fire still remains when the slag is discharged, and the burnt slag blocks the area, resulting in a high carbon content in the residue. Second, there is severe leakage of pulverized coal. Third, there is high resistance, which increases the explosion load and the induced draft fan, resulting in high energy consumption. Low furnace temperature, poor coal quality, poor combustion conditions, low furnace temperature, and sometimes even extinguishing the fire. The large amount of unburned material and ash will save coal.