Safety measures for boiler low nitrogen burners. The gas itself is toxic, flammable and explosive. According to the combustion characteristics of the gas in the furnace, during the use of the gas boiler burner, it is necessary to pay attention to the safe use of each period.
1. Pre-blowing: Before the incinerator burns, it is necessary to have a pre-blowing for a period of time to blow off or dilute the residual gas in the furnace and flue. Because there is inevitably residual gas in the working furnace of the incinerator, if it is incinerated without pre-blowing, there is a risk of explosion. It is necessary to blow off the residual gas or dilute it to ensure that the gas concentration is not within the explosion limit. The pre-blowing time is related to the furnace structure and blowing volume, usually set to 15-60 seconds.
2. Power-off maintenance: When the incinerator suddenly loses power during operation, the natural gas supply must be cut off immediately to maintain the safety of the equipment. The gas control solenoid valve must be a normally closed type. Once the power is cut off, it will automatically close and cut off the gas supply. The closing response time of the solenoid valve is less than or equal to five seconds.
3. Maintenance after incineration failure: When the burner is ignited, the gas is fed in, and the gas ignites and burns. The combustion action needs to occur before the gas is introduced, and the combustion temperature field is formed first, which is convenient for ignition. If the ignition fails, the flame detector cannot detect the flame signal, and the incinerator enters the maintenance state. The time from burning to entering the maintenance state should be appropriate, neither too short nor too long. If it is too short, there will be no time to form a stable flame; if it is too long, a lot of gas will enter the furnace when the fire cannot be ignited. Generally, it takes 2-3 seconds after the gas is turned on, the incinerator judges the flame signal sensed by the flame detector, enters the maintenance state if it is not on fire, and keeps burning if it is on fire.
4. Low-nitrogen burner flameout maintenance: During the combustion process of the incinerator, if the flame is accidentally turned off, the incinerator will enter the maintenance state. Because the furnace is hot, the gas is prone to deflagration when it enters, so it must enter the maintenance state in a very short time to cut off the gas supply. From the occurrence of flameout to the ignition machine entering the maintenance state, the response time of the process needs to be no more than one second.
Safety measures for boiler low nitrogen burners. The gas itself is toxic, flammable and explosive. According to the combustion characteristics of the gas in the furnace, during the use of the gas boiler burner, it is necessary to pay attention to the safe use of each period.
1. Pre-blowing: Before the incinerator burns, it is necessary to have a pre-blowing for a period of time to blow off or dilute the residual gas in the furnace and flue. Because there is inevitably residual gas in the working furnace of the incinerator, if it is incinerated without pre-blowing, there is a risk of explosion. It is necessary to blow off the residual gas or dilute it to ensure that the gas concentration is not within the explosion limit. The pre-blowing time is related to the furnace structure and blowing volume, usually set to 15-60 seconds.
2. Power-off maintenance: When the incinerator suddenly loses power during operation, the natural gas supply must be cut off immediately to maintain the safety of the equipment. The gas control solenoid valve must be a normally closed type. Once the power is cut off, it will automatically close and cut off the gas supply. The closing response time of the solenoid valve is less than or equal to five seconds.
3. Maintenance after incineration failure: When the burner is ignited, the gas is fed in, and the gas ignites and burns. The combustion action needs to occur before the gas is introduced, and the combustion temperature field is formed first, which is convenient for ignition. If the ignition fails, the flame detector cannot detect the flame signal, and the incinerator enters the maintenance state. The time from burning to entering the maintenance state should be appropriate, neither too short nor too long. If it is too short, there will be no time to form a stable flame; if it is too long, a lot of gas will enter the furnace when the fire cannot be ignited. Generally, it takes 2-3 seconds after the gas is turned on, the incinerator judges the flame signal sensed by the flame detector, enters the maintenance state if it is not on fire, and keeps burning if it is on fire.
4. Low-nitrogen burner flameout maintenance: During the combustion process of the incinerator, if the flame is accidentally turned off, the incinerator will enter the maintenance state. Because the furnace is hot, the gas is prone to deflagration when it enters, so it must enter the maintenance state in a very short time to cut off the gas supply. From the occurrence of flameout to the ignition machine entering the maintenance state, the response time of the process needs to be no more than one second.