全自動運動粘度測定儀是測量透明或不透明流體運動粘度的全自動化測試儀

油(you)(you)品(pin)粘(zhan)(zhan)度的定義粘(zhan)(zhan)度是(shi)對(dui)(dui)油(you)(you)品(pin)流動(dong)(dong)(dong)性的一種表(biao)征,反(fan)映了液體分(fen)子在(zai)運動(dong)(dong)(dong)過程中相(xiang)互作用的強(qiang)弱(ruo),作用強(qiang)(粘(zhan)(zhan)度大) ,流動(dong)(dong)(dong)難。流體在(zai)流動(dong)(dong)(dong)時,相(xiang)鄰流體層間存(cun)在(zai)著相(xiang)對(dui)(dui)運動(dong)(dong)(dong),則該(gai)兩流體層間會產生摩擦阻力,稱為粘(zhan)(zhan)滯力。

粘度(du)(du)是(shi)用來衡量粘滯(zhi)力大小的一一個物性(xing)數據。其大小由物質種(zhong)類、溫度(du)(du)、濃度(du)(du)等因素決

定(ding)。流體的粘(zhan)度(du)明顯(xian)受環境溫度(du)的影(ying)響(xiang)(xiang)(xiang)(壓力也有一定(ding)影(ying)響(xiang)(xiang)(xiang),但(dan)一般可忽略(lve)不(bu)計) ,這種(zhong)影(ying)響(xiang)(xiang)(xiang)也是分子(zi)間(jian)相互(hu)作用(yong)的結果。通常的概念(nian)是溫度(du)升高,流體體積膨(peng)脹,分子(zi)間(jian)距(ju)離拉遠,相互(hu)作用(yong)減弱(ruo),粘(zhan)度(du)下降;溫度(du)降低(di),流體體積縮小,分子(zi)間(jian)距(ju)離縮短,相互(hu)作用(yong)加(jia)強,粘(zhan)度(du)上升。

油品粘度的檢測意義

粘(zhan)(zhan)(zhan)度(du)(du)(du)對(dui)于各(ge)種油(you)(you)品(pin)(pin)都是一項(xiang)重(zhong)(zhong)要參數。內(nei)燃機及(ji)噴(pen)氣發(fa)(fa)動(dong)機燃料(liao)(liao)的(de)(de)汽化(hua)(hua)(hua)性能(neng)、鍋爐(lu)用燃料(liao)(liao)霧(wu)化(hua)(hua)(hua)的(de)(de)好(hao)壞均直接與油(you)(you)品(pin)(pin)的(de)(de)粘(zhan)(zhan)(zhan)度(du)(du)(du)有(you)關,而油(you)(you)品(pin)(pin)的(de)(de)輸送性能(neng)也與粘(zhan)(zhan)(zhan)度(du)(du)(du)有(you)密切關系。由(you)于粘(zhan)(zhan)(zhan)度(du)(du)(du)在油(you)(you)品(pin)(pin)實際應用中(zhong)表現出(chu)(chu)的(de)(de)重(zhong)(zhong)要性，因此(ci)不(bu)少油(you)(you)品(pin)(pin),諸如(ru)重(zhong)(zhong)質(zhi)燃料(liao)(liao)油(you)(you)、某些潤滑(hua)油(you)(you)等一般以粘(zhan)(zhan)(zhan)度(du)(du)(du)作為(wei)其(qi)分級的(de)(de)依(yi)據(ju)。如(ru)果(guo)重(zhong)(zhong)質(zhi)燃料(liao)(liao)油(you)(you)粘(zhan)(zhan)(zhan)度(du)(du)(du)太大,泵(beng)送和(he)噴(pen)嘴(zui)啟動(dong)都會(hui)發(fa)(fa)生(sheng)困難并可能(neng)發(fa)(fa)生(sheng)回火和(he)操作波動(dong)。粘(zhan)(zhan)(zhan)度(du)(du)(du)也會(hui)影(ying)響噴(pen)嘴(zui)的(de)(de)霧(wu)化(hua)(hua)(hua)效果(guo)、噴(pen)油(you)(you)量和(he)噴(pen)出(chu)(chu)角。如(ru)果(guo)重(zhong)(zhong)質(zhi)燃料(liao)(liao)油(you)(you)到達噴(pen)嘴(zui)尖部時(shi)粘(zhan)(zhan)(zhan)度(du)(du)(du)不(bu)適,則會(hui)造成霧(wu)化(hua)(hua)(hua)不(bu)良,而使噴(pen)嘴(zui)尖部結焦、爐(lu)墻積炭,或(huo)發(fa)(fa)生(sheng)其(qi)他情(qing)況而造成燃燒不(bu)良。重(zhong)(zhong)質(zhi)燃料(liao)(liao)油(you)(you)的(de)(de)粘(zhan)(zhan)(zhan)度(du)(du)(du)隨溫(wen)度(du)(du)(du)的(de)(de)升高而急(ji)劇降低,因此(ci),可用加熱方法使重(zhong)(zhong)質(zhi)燃料(liao)(liao)油(you)(you)易(yi)于輸送和(he)霧(wu)化(hua)(hua)(hua)