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質量流量計測量氣體流量的原理是什麼?
質量流量計測量氣體流量主要有科裏奧利質量流量計和熱式質量流量計兩種類型,它們的測量原理有所不同:
科裏奧利質量流量計
原理:利(li)用(yong)科(ke)裏(li)奧(ao)利(li)力(li)來(lai)測(ce)量(liang)質(zhi)量(liang)流(liu)量(liang)。當(dang)氣(qi)體(ti)在(zai)振(zhen)動(dong)的(de)測(ce)量(liang)管(guan)中(zhong)流(liu)動(dong)時(shi),會(hui)受(shou)到(dao)科(ke)裏(li)奧(ao)利(li)力(li)的(de)作(zuo)用(yong),使(shi)測(ce)量(liang)管(guan)產(chan)生(sheng)扭(niu)曲(qu)變(bian)形(xing)。通(tong)過(guo)檢(jian)測(ce)測(ce)量(liang)管(guan)的(de)振(zhen)動(dong)頻(pin)率(lv)、相位差等參數,就可以計算出氣體的質量流量。
具體過程:在(zai)科(ke)裏(li)奧(ao)利(li)質(zhi)量(liang)流(liu)量(liang)計(ji)中(zhong),有(you)一(yi)對(dui)平(ping)行(xing)的(de)測(ce)量(liang)管(guan),氣(qi)體(ti)從(cong)測(ce)量(liang)管(guan)中(zhong)流(liu)過(guo)。測(ce)量(liang)管(guan)由(you)驅(qu)動(dong)器(qi)驅(qu)動(dong),以(yi)一(yi)定(ding)的(de)頻(pin)率(lv)振(zhen)動(dong)。當(dang)氣(qi)體(ti)沒(mei)有(you)流(liu)動(dong)時(shi),兩(liang)測(ce)量(liang)管(guan)的(de)振(zhen)動(dong)相(xiang)位(wei)相(xiang)同(tong);當dang有you氣qi體ti流liu動dong時shi,根gen據ju科ke裏li奧ao利li力li的de原yuan理li,氣qi體ti在zai測ce量liang管guan中zhong會hui產chan生sheng一yi個ge與yu質zhi量liang流liu量liang成cheng正zheng比bi的de科ke裏li奧ao利li力li,這zhe個ge力li會hui使shi測ce量liang管guan的de振zhen動dong相xiang位wei發fa生sheng變bian化hua。通tong過guo安an裝zhuang在zai測ce量liang管guan上shang的de傳chuan感gan器qi檢jian測ce出chu這zhe種zhong相xiang位wei差cha,經jing過guo信xin號hao處chu理li電dian路lu的de處chu理li和he計ji算suan,就jiu可ke以yi得de到dao氣qi體ti的de質zhi量liang流liu量liang。這zhe種zhong測ce量liang原yuan理li不bu受shou氣qi體ti密mi度du、壓力、溫度等參數變化的影響,能夠高精度地測量氣體質量流量。
熱式質量流量計
原理:基於氣體對熱量的傳遞和吸收特性來測量質量流量。它通過測量加熱元件與氣體之間的熱量傳遞情況,來推算出氣體的質量流量。
具體過程:reshizhiliangliuliangjiyouliangzhongchangjiandeleixing,jihengwenchaxinghehenggonglvxing。hengwenchaxingreshizhiliangliuliangjishizaiceliangguanneishezhilianggewenduchuanganqiheyigejiareyuanjian,qizhongyigewenduchuanganqiyongyuceliangqitidewendu,lingyigewenduchuanganqiweiyujiareyuanjianxiayou,yongyuceliangbeijiarehoudeqitiwendu。dangyouqitiliudongshi,qitidaizoujiareyuanjiandereliang,shilianggewenduchuanganqizhijianchanshengwencha。tongguokongzhijiareyuanjiandegonglv,shiwenchabaochihengding,cishijiareyuanjiandegonglvyuqitidezhiliangliuliangchengzhengbi,tongguoceliangjiareyuanjiandegonglvjiukeyijisuanchuqitidezhiliangliuliang。henggonglvxingreshizhiliangliuliangjizeshibaochijiareyuanjiandegonglvhengding,tongguocelianglianggewenduchuanganqizhijiandewenchalaijisuanqitidezhiliangliuliang。
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