燃料氣流直徑的影響:氣流直徑越大，完全混合的時(shí)間越長。為了加速混合，可以將大股氣流分成若干小股氣流。這就是一些大功率的燃燒器有多個(gè)燃料氣噴嘴的原因。

The effects of the diameter of fuel air airflow larger diameter, the longer the complete mixing. In order to accelerate the mixing, the large strands of airflow can be divided into a number of small strands of air. This why some high-power burners have multiple fuel gas nozzles.

燃料氣的發(fā)熱值:當(dāng)其他條件相同時(shí)，燃料氣的發(fā)熱量越大，燃燒需要的空氣量就越多，其混合時(shí)間也就越長。當(dāng)爐子的燃料由熱值低的燃料改為高熱值燃料時(shí)，為了保證其完全燃燒，燃燒器在設(shè)計(jì)時(shí)需要注意改善燃料氣與空氣的混合條件。

The heating value of fuel gas when other conditi are the same, the greater the calorific value of fuel gas, the amount of air needed for burning more, the mixing time is longer. When the fuel of a furnace is changed from a fuel with low calorific value to a high calorific value fuel, in order to ensure its complete combustion, it is necessary to pay attention to improving the mixing condition of fuel gas and air in the design of the burner.

爐子的燃燒器采用的是自動(dòng)點(diǎn)火器，并帶火焰檢測。燃料氣與空氣的混合物在燃燒焰面法線方向的速度分量大于該混合物的火焰?zhèn)鞑ニ俣龋瑒t火焰被推出火孔，開始離焰，直到火焰被吹跑造成火焰熄火——脫火。在正常點(diǎn)火后，如果突然停電，安全裝置電磁閥自動(dòng)切斷氣路內(nèi)燃?xì)夤?yīng)。此時(shí)必需重新開啟電磁閥開關(guān)按鈕，使燃?xì)庵匦滤腿氲綘t子燃燒器內(nèi)，但是我們在燃燒器上設(shè)計(jì)配套的電子打火并帶火焰檢測，只要?dú)怏w進(jìn)入到燒咀內(nèi)電子打火器就會(huì)自動(dòng)打火，點(diǎn)燃?xì)怏w燃燒。

The burner of the furnace is an automatic igniter with flame detection. After normal ignition, if the power fails suddenly, the safety device solenoid valve automatically cuts off the gas supply in the gas path. At this time, the switch button of the solenoid valve must be reopened to re send the gas into the burner burner, but we design a matching electronic fire and fire detection on the burner. As long as the gas enters the burner, the electronic lighter will fire automatically and ignite the gas combustion.

對(duì)流傳熱：對(duì)流傳熱是爐氣與鋼材表面接觸時(shí)的熱交換過程，包括爐氣各部分發(fā)生位移所產(chǎn)生的對(duì)流作用及爐氣分子之間的導(dǎo)熱作用。

Convective heat transfer: convection heat transfer is the heat exchange process of the contact between the furnace gas and the steel surface, including the convection of the displacement of each part of the furnace gas and the heat conduction between the molecules of the furnace gas.