低速球磨機(ji)火力發電具體情況
目前.我國70%—80%的火力發電廠采用筒式低速球磨機。筒式低(di)速(su)球(qiu)(qiu)磨(mo)機(ji)(ji)具有煤(mei)(mei)(mei)種適應性(xing)廣、維護(hu)工(gong)作(zuo)量(liang)少(shao)、控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)簡(jian)單(dan)等特點,但由于(yu)(yu)以往磨(mo)煤(mei)(mei)(mei)機(ji)(ji)料(liao)位(wei)采用(yong)磨(mo)煤(mei)(mei)(mei)機(ji)(ji)壓(ya)差控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi),導致(zhi)料(liao)位(wei)監視、控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)不可(ke)靠(kao),系統運行自(zi)動化(hua)程度低(di),容易造成磨(mo)煤(mei)(mei)(mei)機(ji)(ji)堵煤(mei)(mei)(mei)或斷(duan)煤(mei)(mei)(mei)現象,影響磨(mo)煤(mei)(mei)(mei)機(ji)(ji)的(de)安壘、經(jing)濟運行。廣東羅定電廠(chang)1、2號J機(ji)(ji)組是(shi)單(dan)元制(zhi)(zhi)(zhi)(zhi)的(de)制(zhi)(zhi)(zhi)(zhi)粉系統,磨(mo)煤(mei)(mei)(mei)機(ji)(ji)為FWEC D-ll型雙進雙出球(qiu)(qiu)磨(mo)機(ji)(ji)。為了更好解(jie)決球(qiu)(qiu)磨(mo)機(ji)(ji)磨(mo)煤(mei)(mei)(mei)機(ji)(ji)料(liao)位(wei)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)問題,在該磨(mo)煤(mei)(mei)(mei)機(ji)(ji)上采用(yong)了新方法、新工(gong)藝——通(tong)過安裝在球(qiu)(qiu)磨(mo)機(ji)(ji)的(de)簡(jian)體壓(ya)頭探針(zhen)之間的(de)壓(ya)差來判斷(duan)料(liao)位(wei),根據所(suo)測量(liang)的(de)料(liao)位(wei)變化(hua)自(zi)動控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)給煤(mei)(mei)(mei)量(liang),使磨(mo)煤(mei)(mei)(mei)機(ji)(ji)穩定地工(gong)作(zuo)在一定的(de)料(liao)位(wei)區內,達到安全、經(jing)濟、高效的(de)運行。該料(liao)位(wei)測量(liang)及控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統具有應用(yong)費用(yong)低(di)、結構簡(jian)單(dan)、易于(yu)(yu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)、測量(liang)準確、控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可(ke)靠(kao)、易安裝維護(hu)等特點,非常適合(he)于(yu)(yu)大、中型鋼(gang)球(qiu)(qiu)磨(mo)煤(mei)(mei)(mei)機(ji)(ji)的(de)料(liao)位(wei)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。
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