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定量給料機量程標定

作者:天衡測控 發布時(shi)間:2025-02-23 16:10:28點(dian)擊:10


  以砝(fa)(fa)碼(ma)為(wei)例,首先將秤(cheng)體(ti)(ti)有效稱量段現場(chang)實測值(zhi)(zhi)(zhi)(zhi)(zhi)、秤(cheng)體(ti)(ti)最(zui)大輸(shu)送能力(li)、標(biao)(biao)定砝(fa)(fa)碼(ma)重(zhong)(zhong)量輸(shu)入到二(er)(er)次(ci)儀(yi)(yi)(yi)表(biao)(biao)參(can)數(shu)中,將標(biao)(biao)定砝(fa)(fa)碼(ma)加在秤(cheng)體(ti)(ti)上(shang)(shang)以最(zui)大速度(du)起動秤(cheng)體(ti)(ti),在二(er)(er)次(ci)儀(yi)(yi)(yi)表(biao)(biao)上(shang)(shang)選擇自動校(xiao)驗方式。在此工作中,我們必須熟練掌握理(li)(li)論(lun)(lun)計(ji)(ji)(ji)(ji)算(suan)(suan)值(zhi)(zhi)(zhi)(zhi)(zhi),用(yong)理(li)(li)論(lun)(lun)計(ji)(ji)(ji)(ji)算(suan)(suan)值(zhi)(zhi)(zhi)(zhi)(zhi)與二(er)(er)次(ci)儀(yi)(yi)(yi)表(biao)(biao)檢測顯示(shi)(shi)值(zhi)(zhi)(zhi)(zhi)(zhi)比較,計(ji)(ji)(ji)(ji)算(suan)(suan)出(chu)定量給料機(ji)的(de)偏(pian)差值(zhi)(zhi)(zhi)(zhi)(zhi)=[(儀(yi)(yi)(yi)表(biao)(biao)顯示(shi)(shi)值(zhi)(zhi)(zhi)(zhi)(zhi)-理(li)(li)論(lun)(lun)計(ji)(ji)(ji)(ji)算(suan)(suan)值(zhi)(zhi)(zhi)(zhi)(zhi))/理(li)(li)論(lun)(lun)計(ji)(ji)(ji)(ji)算(suan)(suan)值(zhi)(zhi)(zhi)(zhi)(zhi)] ×100%。通(tong)過修(xiu)改偏(pian)差系(xi)數(shu)(舊(jiu)系(xi)數(shu)/儀(yi)(yi)(yi)表(biao)(biao)顯示(shi)(shi)值(zhi)(zhi)(zhi)(zhi)(zhi)=新系(xi)數(shu)/理(li)(li)論(lun)(lun)計(ji)(ji)(ji)(ji)算(suan)(suan)值(zhi)(zhi)(zhi)(zhi)(zhi))來(lai)修(xiu)正,使定量給料機(ji)流量顯示(shi)(shi)值(zhi)(zhi)(zhi)(zhi)(zhi)等于理(li)(li)論(lun)(lun)計(ji)(ji)(ji)(ji)算(suan)(suan)值(zhi)(zhi)(zhi)(zhi)(zhi)。理(li)(li)論(lun)(lun)計(ji)(ji)(ji)(ji)算(suan)(suan)值(zhi)(zhi)(zhi)(zhi)(zhi)流量Q(噸/小時)=皮帶秤(cheng)速度(du)(米(mi)/秒)×砝(fa)(fa)碼(ma)重(zhong)(zhong)量(千克)/有效稱量段長(chang)度(du)(米(mi))×3600/1000。如(ru)果理(li)(li)論(lun)(lun)計(ji)(ji)(ji)(ji)算(suan)(suan)值(zhi)(zhi)(zhi)(zhi)(zhi)與二(er)(er)次(ci)儀(yi)(yi)(yi)表(biao)(biao)檢測顯示(shi)(shi)值(zhi)(zhi)(zhi)(zhi)(zhi)相差很(hen)大,我們可以判斷二(er)(er)次(ci)儀(yi)(yi)(yi)表(biao)(biao)出(chu)現問題,可對二(er)(er)次(ci)儀(yi)(yi)(yi)表(biao)(biao)進(jin)行檢查修(xiu)復。要求量程校(xiao)驗進(jin)行三次(ci),并(bing)對參(can)數(shu)進(jin)行記錄。最(zui)后核實理(li)(li)論(lun)(lun)計(ji)(ji)(ji)(ji)算(suan)(suan)值(zhi)(zhi)(zhi)(zhi)(zhi)與設計(ji)(ji)(ji)(ji)最(zui)大輸(shu)送能力(li)是否相符,不同(tong)(tong)時應(ying)檢查有效稱量段的(de)參(can)數(shu)檢查二(er)(er)次(ci)儀(yi)(yi)(yi)表(biao)(biao),重(zhong)(zhong)新標(biao)(biao)定直到相同(tong)(tong)。

  定(ding)(ding)(ding)(ding)(ding)量(liang)(liang)(liang)(liang)給(gei)(gei)(gei)料(liao)(liao)機(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)程標定(ding)(ding)(ding)(ding)(ding)完(wan)成還不能說定(ding)(ding)(ding)(ding)(ding)量(liang)(liang)(liang)(liang)給(gei)(gei)(gei)料(liao)(liao)機(ji)(ji)(ji)(ji)就已(yi)準確,我(wo)們還要進(jin)行(xing)(xing)觀察校(xiao)驗。待定(ding)(ding)(ding)(ding)(ding)量(liang)(liang)(liang)(liang)給(gei)(gei)(gei)料(liao)(liao)機(ji)(ji)(ji)(ji)投(tou)入運(yun)行(xing)(xing)時(shi),在正常喂料(liao)(liao)情(qing)況下讓中控(kong)操作人(ren)員(yuan)保(bao)持喂料(liao)(liao)給(gei)(gei)(gei)定(ding)(ding)(ding)(ding)(ding)不變。我(wo)們到(dao)定(ding)(ding)(ding)(ding)(ding)量(liang)(liang)(liang)(liang)給(gei)(gei)(gei)料(liao)(liao)機(ji)(ji)(ji)(ji)的(de)運(yun)行(xing)(xing)現場,用秒表(biao)(biao)(biao)測(ce)出(chu)皮(pi)(pi)(pi)帶(dai)運(yun)行(xing)(xing)速度(du)并(bing)與二次儀(yi)(yi)表(biao)(biao)(biao)速度(du)顯示(shi)核實。而(er)后測(ce)量(liang)(liang)(liang)(liang)皮(pi)(pi)(pi)帶(dai)上物(wu)(wu)(wu)料(liao)(liao)的(de)上底(di)寬(kuan)度(du)、下底(di)寬(kuan)度(du)和(he)料(liao)(liao)層厚(hou)度(du)。以上測(ce)量(liang)(liang)(liang)(liang)工作必須兩人(ren)完(wan)成注意安全。用所測(ce)數據按照梯形(xing)計算面積,按1米(mi)物(wu)(wu)(wu)料(liao)(liao)長度(du)算出(chu)所測(ce)物(wu)(wu)(wu)料(liao)(liao)的(de)體積,再乘(cheng)以物(wu)(wu)(wu)料(liao)(liao)的(de)容重就可算出(chu)皮(pi)(pi)(pi)帶(dai)上每(mei)米(mi)千(qian)克數,然后用皮(pi)(pi)(pi)帶(dai)的(de)每(mei)米(mi)千(qian)克數乘(cheng)以皮(pi)(pi)(pi)帶(dai)的(de)速度(du)(米(mi)/秒),最終計算出(chu)定(ding)(ding)(ding)(ding)(ding)量(liang)(liang)(liang)(liang)給(gei)(gei)(gei)料(liao)(liao)機(ji)(ji)(ji)(ji)的(de)實際(ji)流(liu)量(liang)(liang)(liang)(liang)值(噸/小時(shi))。將(jiang)此值與二次儀(yi)(yi)表(biao)(biao)(biao)流(liu)量(liang)(liang)(liang)(liang)顯示(shi)核實與中控(kong)給(gei)(gei)(gei)定(ding)(ding)(ding)(ding)(ding)流(liu)量(liang)(liang)(liang)(liang)核實,偏差(cha)太大要重新組織對定(ding)(ding)(ding)(ding)(ding)量(liang)(liang)(liang)(liang)給(gei)(gei)(gei)料(liao)(liao)機(ji)(ji)(ji)(ji)進(jin)行(xing)(xing)檢查和(he)標定(ding)(ding)(ding)(ding)(ding)。偏差(cha)小可再調整二次儀(yi)(yi)表(biao)(biao)(biao)參數進(jin)行(xing)(xing)修正,最終達到(dao)三值相同,這時(shi)我(wo)們才能肯定(ding)(ding)(ding)(ding)(ding)地說定(ding)(ding)(ding)(ding)(ding)量(liang)(liang)(liang)(liang)給(gei)(gei)(gei)料(liao)(liao)機(ji)(ji)(ji)(ji)已(yi)標準,經(jing)得起推敲經(jing)得起驗證。


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