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磁翻板液位計磁性故障排除方法

磁翻(fan)板液位(wei)(wei)計(ji)(ji)是(shi)在罐區使用(yong)較為普(pu)遍的一種液位(wei)(wei)測量儀表了,在實際使用(yong)過程中,有時會(hui)發會(hui)磁翻(fan)板液位(wei)(wei)計(ji)(ji)由于磁性的原因而(er)產生的故障,根據(ju)我公司的技術人員的總結(jie)磁翻(fan)板液位(wei)(wei)計(ji)(ji)由浮(fu)(fu)(fu)子的受力(li)情況(kuang)可以得到這樣的結(jie)論,那就是(shi)如(ru)果浮(fu)(fu)(fu)子在液位(wei)(wei)開(kai)關(guan)(guan)處(chu)不被吸住能隨液位(wei)(wei)上升,要(yao)么(me)增(zeng)大(da)浮(fu)(fu)(fu)力(li),要(yao)么(me)減小(xiao)重力(li)或減小(xiao)浮(fu)(fu)(fu)子與液位(wei)(wei)開(kai)關(guan)(guan)之間的磁引力(li)。

關(guan)(guan)于這兩種(zhong)不同的處(chu)理(li)方法,如(ru)果增(zeng)(zeng)大浮(fu)(fu)(fu)(fu)(fu)力(li),浮(fu)(fu)(fu)(fu)(fu)子(zi)(zi)(zi)(zi)體(ti)積必(bi)然增(zeng)(zeng)加,浮(fu)(fu)(fu)(fu)(fu)子(zi)(zi)(zi)(zi)重(zhong)力(li)也會增(zeng)(zeng)加,但浮(fu)(fu)(fu)(fu)(fu)子(zi)(zi)(zi)(zi)在(zai)浮(fu)(fu)(fu)(fu)(fu)筒內,體(ti)積增(zeng)(zeng)加的余量不大。而我們(men)(men)通過減小重(zhong)力(li)可能(neng)會使浮(fu)(fu)(fu)(fu)(fu)子(zi)(zi)(zi)(zi)的重(zhong)心上(shang)移,浮(fu)(fu)(fu)(fu)(fu)子(zi)(zi)(zi)(zi)容(rong)易發生側轉,與浮(fu)(fu)(fu)(fu)(fu)筒發生碰磨;浮(fu)(fu)(fu)(fu)(fu)子(zi)(zi)(zi)(zi)重(zhong)心上(shang)移后,可能(neng)導致浮(fu)(fu)(fu)(fu)(fu)子(zi)(zi)(zi)(zi)磁鋼中心與浮(fu)(fu)(fu)(fu)(fu)筒液(ye)面不一致,磁翻(fan)板液(ye)位(wei)計顯示出現偏差。如(ru)何來減小磁性開關(guan)(guan)和(he)浮(fu)(fu)(fu)(fu)(fu)子(zi)(zi)(zi)(zi)之間的磁引力(li),我們(men)(men)給(gei)出有4種(zhong)方案(an)供大家選(xuan)擇(ze):

(1)首先(xian)是降低(di)微(wei)動開關(guan)(guan)的磁性。浮子與微(wei)動開關(guan)(guan)的磁引力(li)也(ye)減小(xiao),浮子在上升或(huo)下降的過(guo)程中(zhong),浮子帶動微(wei)動開關(guan)(guan)的作(zuo)(zuo)用(yong)力(li)變小(xiao),磁翻板(ban)液位計的工(gong)作(zuo)(zuo)不會受到影響。

(2)第二就是(shi)降低(di)浮子的(de)磁(ci)(ci)(ci)性,但(dan)會導致翻(fan)(fan)板(ban)轉動緩慢、滯后或(huo)無法動作(zuo)。因為磁(ci)(ci)(ci)翻(fan)(fan)板(ban)翻(fan)(fan)轉就是(shi)靠浮子的(de)磁(ci)(ci)(ci)引(yin)(yin)力帶(dai)動的(de),降低(di)浮子磁(ci)(ci)(ci)性,也就降低(di)了磁(ci)(ci)(ci)引(yin)(yin)力,容易引(yin)(yin)起翻(fan)(fan)板(ban)動作(zuo)異常(chang)。

(3)第(di)三是(shi)增(zeng)大(da)浮子(zi)(zi)和微動(dong)開(kai)關(guan)的距離,因為(wei)磁(ci)(ci)引(yin)力是(shi)隨磁(ci)(ci)性(xing)物質的距離的減(jian)小(xiao)而增(zeng)大(da),增(zeng)大(da)距離也會減(jian)小(xiao)浮子(zi)(zi)對微動(dong)開(kai)關(guan)的磁(ci)(ci)引(yin)力。具體可(ke)以在浮筒的微動(dong)開(kai)關(guan)處(chu)加(jia)裝(zhuang)鐵(tie)片(pian),加(jia)厚一定程(cheng)度(du)后再加(jia)裝(zhuang)微動(dong)開(kai)關(guan),使浮子(zi)(zi)的磁(ci)(ci)引(yin)力剛好可(ke)以帶(dai)動(dong)浮子(zi)(zi)而這個引(yin)力又不太大(da)。

(4)z.ui后一(yi)種(zhong)方案就是通過(guo)增加微(wei)(wei)動(dong)(dong)(dong)開關(guan)的(de)(de)轉(zhuan)動(dong)(dong)(dong)角度,微(wei)(wei)動(dong)(dong)(dong)開關(guan)在浮子(zi)磁力的(de)(de)作用(yong)下,可以轉(zhuan)動(dong)(dong)(dong)一(yi)定(ding)角度,但(dan)由于微(wei)(wei)動(dong)(dong)(dong)開關(guan)受(shou)到限(xian)(xian)位(wei)柱的(de)(de)限(xian)(xian)制,實際(ji)轉(zhuan)動(dong)(dong)(dong)角度很(hen)小。增大(da)(da)轉(zhuan)動(dong)(dong)(dong)角度后,微(wei)(wei)動(dong)(dong)(dong)開關(guan)磁柱隨浮子(zi)上升(sheng)轉(zhuan)動(dong)(dong)(dong),轉(zhuan)到限(xian)(xian)位(wei)柱處,若此時浮子(zi)和微(wei)(wei)動(dong)(dong)(dong)開關(guan)磁柱的(de)(de)作用(yong)力很(hen)小,那么浮子(zi)也不會受(shou)到微(wei)(wei)動(dong)(dong)(dong)開關(guan)很(hen)大(da)(da)的(de)(de)作用(yong)力。


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