Writer： admin Time：2021-12-31 00:00 Browse：℃
The gas burner is a fuel and air into the furnace continuously, rational organization of the pulverized coal flow, and allowed to mix well, rapid and stable ignition and combustion of a burner apparatus. With the view of natural gas burner control requirements and precautions
Natural gas burner control requirements and precautions
For my country, natural gas and coal resource information is relatively abundant, clean energy and attributed, with outstanding social and economic benefits. Natural gas burner relatively fit than I had and now industrial policy, so the market prospect is good. However, in the development process gas burners, the characteristics of natural gas, "flammable, explosive, toxic," these three issues are security damage control, control requirements of natural gas burner: According to the combustion characteristics of the gas in the furnace of its security control requirements have mainly pre hair, active combustion, combustion control, misfiring protection, flame protection, uneven gas pressure limit protection, the lack of air pressure protection, power protection, methods of prevention and other incidents of gas leakage. Pre hair: natural gas burner before the combustion, it is necessary to have a period of pre-blowing, the furnace and the flue gas blow-off I or dilution. Because non-flammable gas to prevent more than to stay within the natural gas burner furnace operation, if not pre-hair-burning, there is a risk of explosion. We need to blow off a clean gas or dilution gas concentration does not ensure the explosion limits. Pre-blowing time and blowing amount and structure of the furnace is set to 15-60 seconds on general combustion Active: natural gas combustion burner spark should use, easy to end active control. Available high-voltage transformer from burning arc burning, which required energy output: voltage ≥3 5K V, current ≥15mA, the burning time is generally: 2 to 5 seconds. Monitoring combustion: combustion dynamics need to be monitored, once the flame detector flame sensed signal, it is necessary in response to a very short period of time natural gas burner, then into the protective case, with cut off the gas supply. Flame detectors sense to be able to properly measure the flame signal, neither active, nor dull. Because active, combustion malfunction if not firm and prone to dull, flame signal response lag is not conducive to safe operation. General requirements declaration signal from the flame to flameout of the flame detector does not cross care time 0.2 seconds. Protection of misfiring: natural gas burner, into gas, combustion gas ignition. Operation request occurs before the combustion gas through the first field constituting the combustion temperature to facilitate ignition and combustion. Suppose misfire, flame detectors sensing flame signal than the burner into the protection case.
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