Correct operating standards for gas boilers

Gas-fired boilers are economical and practical boilers. They are also more environmentally friendly than coal-fired boilers and oil-fired boilers. Therefore, gas-fired boilers are called environmentally-friendly and energy-saving boilers. In order to ensure the operation of the boiler, the gas boiler operator must have relevant documents to get on the job. It is obvious that the operation of the gas boiler is very important. Today, we will introduce in detail the operating standards of gas boilers:

1. Prepare before starting the furnace

1 Check whether the gas pressure is normal, not too high or too low, open the supply gate of oil and gas; 2 check whether the water pump is watered, if it is not water, open the vent valve until the water is up; 3 check the water level gauge, 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. If the water shortage can be manually applied to the water; 4 check the valve on the pressure pipe, open, and the windshield on the flue is fully open; Check that the knobs on the control cabinet are in the normal position; 6 Check that the steam boiler outlet valve should be in the closed state, and the hot water boiler circulating water pump outlet valve should also be in the closed state; 7 check whether the softened water equipment is operating normally, and each of the soft water produced Whether the indicators meet the national standards.

2, start the furnace operation

1) 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 Fasten, if it is leaked after tightening, stop the furnace for maintenance; (5) When the air pressure rises 0.05~0.1MPA, replenish water, drain, check the test water supply system and sewage device, and flush the water level table; (6) When the air pressure rises to 0.1~0.15MPA Flush the 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, the warm air supply is started. Slowly open the main steam valve to avoid water hammer; (9) Close the steam valve 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" Turn the knob to “Auto”; (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 : Adjust the combustion according to the load (manually adjust 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 exhausting temperature. The temperature of the flue is generally controlled between 220 and 250 °C. At the same time, the exhaust temperature and concentration of the chimney are observed. Adjust to the status.

2) The hot water boiler (1) turns on the main power supply; (2) starts the circulation pump; (3) slowly opens the circulation pump outlet valve; (4) starts the burner; (5) after 15 minutes, the "load fire/small fire" color button turns to the "big fire" (6) " The burner control knob is turned to "automatic".

3, normal shutdown:

A normal shutdown: hot water boiler 1 "load fire / small fire" knob to "small fire"; 2 close the burner; 3 close the fuel supply valve; 4 closed flue baffle 5 boiler water temperature dropped to 50 ° C , close the circulation pump outlet valve. 6 Stop the circulating pump steam boiler 1 "load fire / small fire" position; 2 shut down the burner; 3 when the steam pressure drops to 0.05-0.1MPA for sewage; 4 close the main steam valve; 5 manually replenish water to slightly higher water level; Complete feed valve; 7 close the combustion supply valve; 8 close the flue baffle; 9 turn off the main power supply;

B emergency shutdown: hot water boiler 1 closes the boiler inlet and outlet valves; 2 opens emergency discharge valve and emergency water supply valve; 3 closes the main power switch; 4 informs the superior leader; steam boiler 1 closes the main steam valve; 2 turns off the main power supply; Notify the superiors.