中子(zi)料位計的使用維護

中(zhong)(zhong)子(zi)(zi)(zi)(zi)料(liao)位計(ji)的(de)(de)(de)主要(yao)部件是安裝(zhuang)在(zai)現場(chang)的(de)(de)(de)中(zhong)(zhong)子(zi)(zi)(zi)(zi)發生器(qi)、慢中(zhong)(zhong)子(zi)(zi)(zi)(zi)捕獲(huo)器(qi)以及中(zhong)(zhong)子(zi)(zi)(zi)(zi)料(liao)位計(ji)的(de)(de)(de)處理變送器(qi)，中(zhong)(zhong)子(zi)(zi)(zi)(zi)發生器(qi)普(pu)遍采用(yong)的(de)(de)(de)是輻(fu)射性核物質，由(you)于(yu)核物質的(de)(de)(de)半(ban)衰期(qi)普(pu)遍在(zai)幾十年以上，所以中(zhong)(zhong)子(zi)(zi)(zi)(zi)料(liao)位計(ji)從根本(ben)上能(neng)夠(gou)使用(yong)幾十年沒(mei)有問題(ti)。但(dan)由(you)于(yu)中(zhong)(zhong)子(zi)(zi)(zi)(zi)料(liao)位計(ji)直(zhi)接(jie)安裝(zhuang)在(zai)焦(jiao)炭(tan)塔(ta)的(de)(de)(de)外壁上其儀表上面的(de)(de)(de)電(dian)路板(ban)長(chang)期(qi)經受焦(jiao)炭(tan)塔(ta)的(de)(de)(de)高溫輻(fu)射，加速電(dian)路板(ban)的(de)(de)(de)老化(hua)，造(zao)成中(zhong)(zhong)子(zi)(zi)(zi)(zi)料(liao)位計(ji)測量不準甚(shen)至失靈，因此從實際使用(yong)中(zhong)(zhong)中(zhong)(zhong)子(zi)(zi)(zi)(zi)料(liao)位計(ji)是需要(yao)進行維護(hu)維修。

為了延長中(zhong)子料(liao)(liao)位計的使用(yong)壽命(ming)，減少焦(jiao)炭(tan)塔(ta)高(gao)溫輻(fu)射對(dui)中(zhong)子料(liao)(liao)位計的影響，焦(jiao)炭(tan)塔(ta)測料(liao)(liao)位生產廠商(shang)，現場(chang)安裝前要盡可能的做好保溫防護。

中子的特性

自從人類發(fa)現了(le)放(fang)射(she)性物(wu)質(zhi)，通過核(he)裂(lie)變發(fa)現了(le)很(hen)多新物(wu)質(zhi)，其中(zhong)(zhong)(zhong)就有(you)中(zhong)(zhong)(zhong)子(zi)(zi)這個微觀粒(li)子(zi)(zi)。在對中(zhong)(zhong)(zhong)子(zi)(zi)的研究中(zhong)(zhong)(zhong)發(fa)現，焦炭塔(ta)測料位原理，中(zhong)(zhong)(zhong)子(zi)(zi)本身不帶電荷(he)呈(cheng)現電中(zhong)(zhong)(zhong)性，在運動中(zhong)(zhong)(zhong)不會(hui)受到電場力的影響，具(ju)有(you)較強的穿透性，能夠(gou)穿透很(hen)厚(hou)的金屬物(wu)體。

根(gen)據中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)能(neng)量(liang)的(de)不(bu)同，中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)分為快(kuai)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)和慢中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)，焦(jiao)炭塔測料位安(an)裝檢測，在自(zi)(zi)然核(he)裂變(bian)(bian)過程(cheng)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)產生的(de)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)是(shi)自(zi)(zi)由中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)即快(kuai)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)。快(kuai)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)運(yun)動中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)與原(yuan)子(zi)(zi)(zi)(zi)(zi)(zi)核(he)的(de)作用主(zhu)要是(shi)發(fa)生彈性散射，當快(kuai)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)運(yun)動中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)碰到與其(qi)自(zi)(zi)身質量(liang)相近的(de)氫質子(zi)(zi)(zi)(zi)(zi)(zi)時(shi)彈性散射損失的(de)能(neng)量(liang)很多(duo)。如果(guo)物(wu)質所含氫原(yuan)子(zi)(zi)(zi)(zi)(zi)(zi)較(jiao)多(duo)，快(kuai)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)在運(yun)動中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)發(fa)生彈性散射的(de)能(neng)量(liang)損失就會變(bian)(bian)大，快(kuai)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)就會變(bian)(bian)成慢中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)。慢中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)(zi)(zi)(zi)在運(yun)動中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)遇到其(qi)他物(wu)質原(yuan)子(zi)(zi)(zi)(zi)(zi)(zi)核(he)的(de)主(zhu)要作用形式是(shi)被吸(xi)收。

中子料位計產品原理

華科HC-5000型中子(zi)料(liao)位計(ji)每塔安裝三個(ge)檢(jian)測點(dian)，底部檢(jian)測點(dian)用(yong)于(yu)(yu)防水排(pai)空條件判(pan)(pan)(pan)定，可參與(yu)卸(xie)底蓋邏輯條件判(pan)(pan)(pan)斷，中部檢(jian)測點(dian)用(yong)于(yu)(yu)消泡(pao)劑(ji)注入時(shi)機(ji)(ji)判(pan)(pan)(pan)斷，消泡(pao)效果觀察及判(pan)(pan)(pan)定，切塔時(shi)機(ji)(ji)預判(pan)(pan)(pan)；上部檢(jian)測點(dian)作為上限報警點(dian)，焦炭塔測料(liao)位，以此(ci)為安全生產(chan)區(qu)，用(yong)于(yu)(yu)泡(pao)沫高限報警、切塔時(shi)機(ji)(ji)判(pan)(pan)(pan)斷和改水溢(yi)流順控(kong)判(pan)(pan)(pan)定。

結合(he)注(zhu)油信號的(de)注(zhu)油時間與到達檢測點的(de)時間，可推算出物(wu)質上(shang)(shang)升(sheng)速度(du)(du)，可對泡沫層、焦炭層的(de)上(shang)(shang)沿(yan)高度(du)(du)進行預判，并(bing)可在中(zhong)部檢查點進一(yi)步修(xiu)正物(wu)質上(shang)(shang)升(sheng)速度(du)(du)，更加直觀的(de)顯(xian)示(shi)塔內(nei)各(ge)物(wu)質的(de)高度(du)(du)。