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重油燒嘴的燃燒控制

2020-07-15

       在重(zhong)(zhong)(zhong)油噴(pen)嘴中，如(ru)果重(zhong)(zhong)(zhong)油溫度(du)低，由于黏(nian)度(du)增高，送油困難，并且(qie)霧化和噴(pen)霧狀態也不好，因此需要保(bao)持一定的油溫。 這就需要使(shi)用重(zhong)(zhong)(zhong)油燒嘴的控(kong)制系統了(le)。
       這(zhe)種噴(pen)(pen)嘴的(de)(de)控(kong)(kong)制(zhi)是(shi)位置式比例(li)(li)(li)控(kong)(kong)制(zhi)方(fang)式。用(yong)(yong)給油(you)(you)泵(beng)將重(zhong)油(you)(you)從重(zhong)油(you)(you)儲罐送入給油(you)(you)罐中。為了使(shi)重(zhong)油(you)(you)保(bao)持50～60℃的(de)(de)溫度(du)，在給油(you)(you)罐中裝有電(dian)(dian)加(jia)(jia)(jia)熱(re)器和蒸汽加(jia)(jia)(jia)熱(re)器。電(dian)(dian)加(jia)(jia)(jia)熱(re)器僅在啟動(dong)時使(shi)用(yong)(yong)，如果有蒸汽產生的(de)(de)話，便可切換成蒸汽加(jia)(jia)(jia)熱(re)器。給油(you)(you)罐里的(de)(de)重(zhong)油(you)(you)用(yong)(yong)噴(pen)(pen)燃(ran)泵(beng)加(jia)(jia)(jia)壓送往(wang)噴(pen)(pen)嘴，并(bing)用(yong)(yong)途中裝設的(de)(de)油(you)(you)加(jia)(jia)(jia)熱(re)器將油(you)(you)溫提高到與良(liang)好的(de)(de)噴(pen)(pen)霧條件相(xiang)適(shi)應的(de)(de)溫度(du)。這(zhe)個(ge)油(you)(you)加(jia)(jia)(jia)熱(re)器是(shi)電(dian)(dian)氣式加(jia)(jia)(jia)熱(re)器，采用(yong)(yong)通- 斷控(kong)(kong)制(zhi)，使(shi)重(zhong)油(you)(you)保(bao)持一定溫度(du)。 通過(guo)油(you)(you)加(jia)(jia)(jia)熱(re)器的(de)(de)重(zhong)油(you)(you)用(yong)(yong)燃(ran)料控(kong)(kong)制(zhi)閥(fa)調節流量， 僅把需(xu)要量的(de)(de)油(you)(you)送往(wang)噴(pen)(pen)嘴，其余的(de)(de)重(zhong)油(you)(you)經過(guo)三(san)通電(dian)(dian)磁閥(fa)返(fan)回到噴(pen)(pen)燃(ran)泵(beng)的(de)(de)吸入側。燃(ran)料控(kong)(kong)制(zhi)閥(fa)是(shi)比例(li)(li)(li)控(kong)(kong)制(zhi)電(dian)(dian)機(ji)(ji)進(jin)行控(kong)(kong)制(zhi)，而這(zhe)個(ge)電(dian)(dian)機(ji)(ji)是(shi)根據與蒸汽壓力(li)的(de)(de)檢測值和設定值之差相(xiang)應的(de)(de)信(xin)號進(jin)行動(dong)作。另一方(fang)面， 助燃(ran)空(kong)氣由同一個(ge)比例(li)(li)(li)控(kong)(kong)制(zhi)電(dian)(dian)機(ji)(ji)相(xiang)連接的(de)(de)擋板的(de)(de)開閉進(jin)行控(kong)(kong)制(zhi)，使(shi)空(kong)氣流量與燃(ran)料流量成比例(li)(li)(li)地進(jin)行調節。
       在(zai)這(zhe)種重油燒(shao)嘴上，裝設有點(dian)火煤(mei)氣燒(shao)嘴以及火焰檢(jian)測器，自(zi)動進行點(dian)火和熄火控制。

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