How to operate a vertical gas steam boiler safely

How to operate a vertical gas steam boiler safely

1. Anyone who operates the boiler must be familiar with the performance of the boiler being operated and related safety knowledge, and be certified to work. Non-local personnel are strictly prohibited from operating. The duty personnel shall carefully record the operation records and handover records in strict accordance with the regulations, and the handover safety shall be carried out in the handover class. Check if the boiler is in good condition when handing over the shift.

2. The boiler and safety accessories shall be inspected and qualified within the validity period.

3. Preparation before starting the furnace

1 Gas furnace check whether the gas pressure is normal, do not be too high or too low, open the oil supply valve; 2 check whether the water pump is water, otherwise open the vent valve until the water is up. Open the door of the water supply system (including the front and rear of the pump and the water supply door of the boiler); 3 Check the water level gauge, the water level should be in the normal position, the water level gauge and the water level color plug should be in the open position to prevent the false water level. Water shortage can be manually watered; 4 check the valve on the pressure pipe, must be opened, the windshield on the flue must be fully opened; 5 check that each knob on the control cabinet is in the normal position; 6 check the steam boiler outlet valve should be closed The hot water boiler circulating water pump outlet valve should also be closed; 7 check whether the softened water equipment is operating normally, and whether the various indicators of the soft water produced meet the national standards.

4. Start the furnace operation

Steam boiler (1) open the main power supply; (2) start the burner; (3) the vent valve on the drum, when the steam is completely steamed, close it; (4) check the boiler manhole, hand hole flange and valve, find the leak to be fastened After tightening, such as leakage, shutdown maintenance; (5) when the pressure rises 0.05 to 0.1 MPA, hydration, sewage, check the test water supply system and sewage device, and flush the water level table; (6) when the pressure rises to 0.1 ~ 0.15MPA, rinse Pressure gauge water trap; (7) When the air pressure rises to 0.3MPA, the “load fire/small fire” knob is turned to “big fire” to enhance combustion; (8) when the air pressure rises to 2/3 running pressure, start the warm air supply and start slowly. Main steam valve to avoid water hammer; (9) The drain valve is closed when it is completely steamed; (10) After all the drain valves are closed, slowly open the main air valve to fully open and then rotate half a turn; (11) "Burner Control" knob To "automatic"; (12) water level adjustment: adjust the water level according to the load (manual start and stop feed pump), the water level should be slightly higher than the normal water level when the load is low, and the water level should be slightly lower than the normal water level when the load is high; (13) steam pressure regulation: according to Load regulation combustion (hand Adjusting the fire/small fire) (14) Judging the burning condition, judging the air volume according to the color of the flame and the color of the smoke. (15) Observing the exhaust temperature. The temperature of the smoke is generally controlled between 220 and 250 °C. Temperature, concentration, will adjust the combustion to the zui state.

5. Normal shutdown: vertical gas steam boiler 1 closes the main steam valve; 2 closes the main power supply; 3 notifies the superior leader.