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BURKERT流量計的工(gong)作原理是什么?
BURKERT流量(liang)計(ji)原理:通(tong)(tong)(tong)電(dian)時,電(dian)磁(ci)線圈(quan)產生電(dian)磁(ci)力(li)(li)(li)(li)(li)把(ba)(ba)關閉(bi)(bi)(bi)件(jian)從閥(fa)(fa)(fa)(fa)座上(shang)提起(qi),閥(fa)(fa)(fa)(fa)門打開(kai);斷電(dian)時,電(dian)磁(ci)力(li)(li)(li)(li)(li)消失,彈(dan)簧把(ba)(ba)關閉(bi)(bi)(bi)件(jian)壓(ya)(ya)在閥(fa)(fa)(fa)(fa)座上(shang),閥(fa)(fa)(fa)(fa)門關閉(bi)(bi)(bi)。 特點(dian)(dian):在真空、負壓(ya)(ya)、零(ling)(ling)壓(ya)(ya)時能正(zheng)常工作,但通(tong)(tong)(tong)徑一(yi)(yi)般不超過(guo)25mm。 分布直動(dong)(dong)(dong)(dong)(dong)式BURKERT流量(liang)計(ji): 原理: 它是一(yi)(yi)種直動(dong)(dong)(dong)(dong)(dong)和先(xian)(xian)(xian)(xian)導(dao)(dao)式相(xiang)結合的(de)(de)原理,當入(ru)口與(yu)出口沒有壓(ya)(ya)差時,通(tong)(tong)(tong)電(dian)后,電(dian)磁(ci)力(li)(li)(li)(li)(li)直接把(ba)(ba)先(xian)(xian)(xian)(xian)導(dao)(dao)小閥(fa)(fa)(fa)(fa)和主(zhu)閥(fa)(fa)(fa)(fa)關閉(bi)(bi)(bi)件(jian)依次向(xiang)上(shang)提起(qi),閥(fa)(fa)(fa)(fa)門打開(kai)。當入(ru)口與(yu)出口達到(dao)啟動(dong)(dong)(dong)(dong)(dong)壓(ya)(ya)差時,通(tong)(tong)(tong)電(dian)后,電(dian)磁(ci)力(li)(li)(li)(li)(li)先(xian)(xian)(xian)(xian)導(dao)(dao)小閥(fa)(fa)(fa)(fa),主(zhu)閥(fa)(fa)(fa)(fa)下(xia)腔(qiang)壓(ya)(ya)力(li)(li)(li)(li)(li)上(shang)升,上(shang)腔(qiang)壓(ya)(ya)力(li)(li)(li)(li)(li)下(xia)降,從而(er)利用壓(ya)(ya)差把(ba)(ba)主(zhu)閥(fa)(fa)(fa)(fa)向(xiang)上(shang)推開(kai);斷電(dian)時,先(xian)(xian)(xian)(xian)導(dao)(dao)閥(fa)(fa)(fa)(fa)利用彈(dan)簧力(li)(li)(li)(li)(li)或介質(zhi)壓(ya)(ya)力(li)(li)(li)(li)(li)推動(dong)(dong)(dong)(dong)(dong)關閉(bi)(bi)(bi)件(jian),向(xiang)下(xia)移(yi)動(dong)(dong)(dong)(dong)(dong),使閥(fa)(fa)(fa)(fa)門關閉(bi)(bi)(bi)。 特點(dian)(dian): 在零(ling)(ling)壓(ya)(ya)差或真空、高(gao)壓(ya)(ya)時亦能可*動(dong)(dong)(dong)(dong)(dong)作,但功(gong)率(lv)較大,要求必須水平(ping)安裝(zhuang)。 先(xian)(xian)(xian)(xian)導(dao)(dao)式BURKERT流量(liang)計(ji): 原理:通(tong)(tong)(tong)電(dian)時,電(dian)磁(ci)力(li)(li)(li)(li)(li)把(ba)(ba)先(xian)(xian)(xian)(xian)導(dao)(dao)孔打開(kai),上(shang)腔(qiang)室壓(ya)(ya)力(li)(li)(li)(li)(li)迅(xun)速(su)下(xia)降,在關閉(bi)(bi)(bi)件(jian)周(zhou)圍形(xing)成上(shang)低(di)下(xia)高(gao)的(de)(de)壓(ya)(ya)差,流體(ti)壓(ya)(ya)力(li)(li)(li)(li)(li)推動(dong)(dong)(dong)(dong)(dong)關閉(bi)(bi)(bi)件(jian)向(xiang)上(shang)移(yi)動(dong)(dong)(dong)(dong)(dong),閥(fa)(fa)(fa)(fa)門打開(kai);斷電(dian)時,彈(dan)簧力(li)(li)(li)(li)(li)把(ba)(ba)先(xian)(xian)(xian)(xian)導(dao)(dao)孔關閉(bi)(bi)(bi),入(ru)口壓(ya)(ya)力(li)(li)(li)(li)(li)通(tong)(tong)(tong)過(guo)旁通(tong)(tong)(tong)孔迅(xun)速(su)腔(qiang)室在關閥(fa)(fa)(fa)(fa)件(jian)周(zhou)圍形(xing)成下(xia)低(di)上(shang)高(gao)的(de)(de)壓(ya)(ya)差,流體(ti)壓(ya)(ya)力(li)(li)(li)(li)(li)推動(dong)(dong)(dong)(dong)(dong)關閉(bi)(bi)(bi)件(jian)向(xiang)下(xia)移(yi)動(dong)(dong)(dong)(dong)(dong),關閉(bi)(bi)(bi)閥(fa)(fa)(fa)(fa)門。 特點(dian)(dian): 流體(ti)壓(ya)(ya)力(li)(li)(li)(li)(li)范圍上(shang)限較高(gao),可任意安裝(zhuang)(需定制)但必須滿足(zu)流體(ti)壓(ya)(ya)差條(tiao)件(jian)。
德國BURKERT流量(liang)計樣本(圖)
BURKERT流(liu)量計一(yi)般(ban)(ban)由測(ce)溫探頭(熱電(dian)偶或熱電(dian)阻(zu)傳感器)和兩線(xian)制固體(ti)電(dian)子(zi)單元組成。采用固體(ti)模塊形式將測(ce)溫探頭直接安裝在接線(xian)盒內,從而形成一(yi)體(ti)化的傳感器。BURKERT流(liu)量計一(yi)般(ban)(ban)分為(wei)熱電(dian)阻(zu)和熱電(dian)偶型兩種類型。
熱電阻(zu)(zu)溫(wen)度傳感器是由(you)基準單元、R/V轉換單元、線(xian)(xian)性電路、反接保護(hu)、限流(liu)保護(hu)、V/I轉換單元等組成。測(ce)溫(wen)熱電阻(zu)(zu)信號轉換放大后(hou)(hou),再由(you)線(xian)(xian)性電路對溫(wen)度與電阻(zu)(zu)的(de)非線(xian)(xian)性關系進行補償,經V/I轉換電路后(hou)(hou)輸(shu)出一(yi)個(ge)與被測(ce)溫(wen)度成線(xian)(xian)性關系的(de)4~20mA的(de)恒流(liu)信號。
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