1、連鑄(zhu)機(ji)液壓(ya)系統簡介(jie)
連鑄機(ji)(ji)是(shi)鋼(gang)鐵(tie)冶金行業的關鍵設(she)(she)備(bei)之一,功能(neng)是(shi)把鋼(gang)水通過連續澆鑄轉變(bian)成(cheng)鋼(gang)坯。在連鑄機(ji)(ji)成(cheng)套(tao)設(she)(she)備(bei)中,液(ye)(ye)(ye)壓(ya)設(she)(she)備(bei)是(shi)重要的輔(fu)機(ji)(ji),每臺連鑄機(ji)(ji)一般(ban)配有三(san)套(tao)液(ye)(ye)(ye)壓(ya)系(xi)統(tong),按(an)生產流(liu)程(cheng)依次是(shi)主機(ji)(ji)液(ye)(ye)(ye)壓(ya)系(xi)統(tong),液(ye)(ye)(ye)壓(ya)剪液(ye)(ye)(ye)壓(ya)系(xi)統(tong)和冷床(chuang)液(ye)(ye)(ye)壓(ya)系(xi)統(tong)。由于是(shi)高溫易燃(ran)(ran)場(chang)合,三(san)套(tao)液(ye)(ye)(ye)壓(ya)系(xi)統(tong)使用(yong)的都是(shi)抗(kang)燃(ran)(ran)液(ye)(ye)(ye)壓(ya)油(you)。在聯鑫鋼(gang)鐵(tie),連鑄機(ji)(ji)所(suo)有液(ye)(ye)(ye)壓(ya)系(xi)統(tong)使用(yong)的是(shi)聚酯抗(kang)燃(ran)(ran)液(ye)(ye)(ye)壓(ya)油(you),型號為HE68,是(shi)一種合成(cheng)抗(kang)燃(ran)(ran)液(ye)(ye)(ye)用(yong)油(you)。
2、引入(ru)油液狀態(tai)監測技(ji)術
合成抗燃液(ye)壓(ya)油(you)(you)不同(tong)于礦(kuang)物液(ye)壓(ya)油(you)(you),沒有(you)明確的(de)換(huan)油(you)(you)指標(biao),那依據什(shen)么(me)標(biao)準(zhun)換(huan)油(you)(you)呢(ni)?這(zhe)種液(ye)壓(ya)油(you)(you)到底能使(shi)用多長時間(jian)呢(ni)?如果要(yao)(yao)對(dui)該(gai)液(ye)壓(ya)油(you)(you)進行(xing)檢(jian)測,要(yao)(yao)檢(jian)測哪些指標(biao)呢(ni)?這(zhe)些問題都(dou)需要(yao)(yao)加以明確,否則相關工(gong)作的(de)開展就(jiu)失去依據。要(yao)(yao)解(jie)決上述問題就(jiu)需要(yao)(yao)引入(ru)油(you)(you)液(ye)狀態監(jian)測技術。什(shen)么(me)是(shi)油(you)(you)液(ye)狀態檢(jian)測技術呢(ni)?油(you)(you)液(ye)狀態監(jian)測技術是(shi)設備狀態監(jian)測的(de)重要(yao)(yao)組成部分(fen),通常分(fen)為油(you)(you)液(ye)分(fen)析和
磨損顆粒(li)分析兩個(ge)方面(mian)
前者(zhe)著重油液理化(hua)和(he)性(xing)能指(zhi)標的(de)測(ce)定(ding),其目的(de)是判定(ding)油液的(de)劣化(hua)狀(zhuang)(zhuang)態,后者(zhe)通過對油中(zhong)所含磨損(sun)顆粒(li)尺(chi)寸、形貌、顏色和(he)濃度(du)等形態的(de)觀測(ce)來實(shi)現(xian)對設備(bei)磨損(sun)狀(zhuang)(zhuang)態的(de)監測(ce)和(he)診斷(duan)。本文(wen)重點(dian)討論抗燃液壓油理化(hua)指(zhi)標的(de)測(ce)定(ding),以及這些(xie)指(zhi)標與(yu)液壓系(xi)統運行狀(zhuang)(zhuang)態的(de)關系(xi)。
3、各液(ye)壓系(xi)統油品檢測情況(kuang)
近期(qi),聯(lian)鑫鋼(gang)(gang)鐵建(jian)立了(le)油(you)(you)(you)(you)(you)品(pin)檢(jian)測(ce)(ce)試驗室,對煉(lian)鋼(gang)(gang)連(lian)(lian)鑄(zhu)機(ji)各液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)在(zai)用(yong)(yong)(yong)油(you)(you)(you)(you)(you)品(pin)進(jin)行了(le)取樣檢(jian)測(ce)(ce),檢(jian)測(ce)(ce)項目有40℃運(yun)動(dong)黏度(du)(du)、酸(suan)(suan)(suan)值(zhi)和清(qing)(qing)潔度(du)(du)。檢(jian)測(ce)(ce)發現4號(hao)(hao)連(lian)(lian)鑄(zhu)機(ji)主(zhu)(zhu)機(ji)液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)在(zai)用(yong)(yong)(yong)油(you)(you)(you)(you)(you)品(pin)40℃時的(de)(de)運(yun)動(dong)黏度(du)(du)為(wei)(wei)79.8,酸(suan)(suan)(suan)值(zhi)為(wei)(wei)8.00mg/g,4號(hao)(hao)連(lian)(lian)鑄(zhu)冷床液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)在(zai)用(yong)(yong)(yong)油(you)(you)(you)(you)(you)品(pin)40℃時的(de)(de)運(yun)動(dong)黏度(du)(du)為(wei)(wei)78.7,酸(suan)(suan)(suan)值(zhi)為(wei)(wei)6.38mg/g,其他(ta)連(lian)(lian)鑄(zhu)機(ji)液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)在(zai)用(yong)(yong)(yong)油(you)(you)(you)(you)(you)品(pin)40℃時的(de)(de)運(yun)動(dong)黏度(du)(du)均(jun)在(zai)70左右,酸(suan)(suan)(suan)值(zhi)未超(chao)過(guo)2mg/g,而(er)聚酯抗(kang)燃(ran)(ran)液(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)(you)(you)(you)新油(you)(you)(you)(you)(you)的(de)(de)黏度(du)(du)是(shi)68,酸(suan)(suan)(suan)值(zhi)為(wei)(wei)1-2mgg。關于清(qing)(qing)潔度(du)(du),有多臺液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)在(zai)用(yong)(yong)(yong)油(you)(you)(you)(you)(you)品(pin)為(wei)(wei)NAS9-NAS10,嚴重超(chao)標,清(qing)(qing)潔度(du)(du)超(chao)標加(jia)(jia)強(qiang)過(guo)濾即(ji)可,此處(chu)(chu)不(bu)進(jin)行詳細(xi)討論(lun)。通過(guo)以上的(de)(de)檢(jian)測(ce)(ce)結(jie)果(guo)(guo)說明,4號(hao)(hao)連(lian)(lian)鑄(zhu)主(zhu)(zhu)機(ji)液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)和冷床液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)在(zai)用(yong)(yong)(yong)油(you)(you)(you)(you)(you)品(pin)氧化嚴重,已經生成了(le)酸(suan)(suan)(suan)性的(de)(de)粘性物質。這(zhe)兩套液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)油(you)(you)(you)(you)(you)品(pin)如(ru)(ru)何處(chu)(chu)置呢?是(shi)繼續(xu)(xu)使用(yong)(yong)(yong)還是(shi)換(huan)(huan)油(you)(you)(you)(you)(you)呢?如(ru)(ru)果(guo)(guo)繼續(xu)(xu)使用(yong)(yong)(yong)擔心(xin)會(hui)出問(wen)題,如(ru)(ru)果(guo)(guo)冒(mao)然換(huan)(huan)油(you)(you)(you)(you)(you),費(fei)用(yong)(yong)(yong)又很高(gao),因(yin)為(wei)(wei)該(gai)油(you)(you)(you)(you)(you)品(pin)為(wei)(wei)合成油(you)(you)(you)(you)(you),每(mei)桶超(chao)過(guo)了(le)5000元(yuan)。為(wei)(wei)此液(ye)(ye)壓(ya)(ya)(ya)(ya)技(ji)術人(ren)員咨詢了(le)油(you)(you)(you)(you)(you)品(pin)供應商,他(ta)們認為(wei)(wei)40℃運(yun)動(dong)黏度(du)(du)達(da)到(dao)79.8問(wen)題不(bu)大(da),如(ru)(ru)果(guo)(guo)酸(suan)(suan)(suan)值(zhi)過(guo)高(gao)則(ze)建(jian)議換(huan)(huan)油(you)(you)(you)(you)(you),具(ju)體建(jian)議酸(suan)(suan)(suan)值(zhi)達(da)到(dao)4~6mg/g時換(huan)(huan)油(you)(you)(you)(you)(you),而(er)寶鋼(gang)(gang)的(de)(de)做法是(shi)酸(suan)(suan)(suan)值(zhi)達(da)到(dao)8mg/g時才決(jue)(jue)定換(huan)(huan)油(you)(you)(you)(you)(you)。了(le)解了(le)這(zhe)一情況,聯(lian)鑫鋼(gang)(gang)鐵決(jue)(jue)定凡是(shi)使用(yong)(yong)(yong)抗(kang)燃(ran)(ran)液(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)(you)(you)(you)的(de)(de)場合,把酸(suan)(suan)(suan)值(zhi)達(da)到(dao)6mg/g時作為(wei)(wei)警戒值(zhi),此時要加(jia)(jia)強(qiang)監控(kong),提高(gao)油(you)(you)(you)(you)(you)品(pin)的(de)(de)檢(jian)測(ce)(ce)頻率(lv),而(er)把酸(suan)(suan)(suan)值(zhi)達(da)到(dao)8mgg時作為(wei)(wei)換(huan)(huan)油(you)(you)(you)(you)(you)指標。到(dao)此,聯(lian)鑫鋼(gang)(gang)鐵抗(kang)燃(ran)(ran)液(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)(you)(you)(you)有了(le)換(huan)(huan)油(you)(you)(you)(you)(you)標準(zhun)。根據這(zhe)個標準(zhun),4號(hao)(hao)連(lian)(lian)鑄(zhu)主(zhu)(zhu)機(ji)液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)決(jue)(jue)定換(huan)(huan)油(you)(you)(you)(you)(you)處(chu)(chu)理,而(er)4號(hao)(hao)連(lian)(lian)鑄(zhu)冷床液(ye)(ye)壓(ya)(ya)(ya)(ya)站(zhan)(zhan)則(ze)加(jia)(jia)強(qiang)監控(kong)。
4、各(ge)液壓系統運行情(qing)況對比
通(tong)過對各連(lian)(lian)(lian)鑄(zhu)機(ji)(ji)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)在(zai)用(yong)油(you)(you)(you)品(pin)(pin)指(zhi)標的(de)(de)(de)對比,發現各油(you)(you)(you)站油(you)(you)(you)品(pin)(pin)狀態變化(hua)(hua)差異較大,因(yin)為(wei)聯鑫鋼鐵(tie)煉鋼廠所有(you)連(lian)(lian)(lian)鑄(zhu)機(ji)(ji)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)是(shi)(shi)(shi)從2017年下(xia)半(ban)年開(kai)始使(shi)用(yong)抗燃液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)(you)HE68的(de)(de)(de),也就(jiu)是(shi)(shi)(shi)說各臺連(lian)(lian)(lian)鑄(zhu)機(ji)(ji)的(de)(de)(de)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)使(shi)用(yong)的(de)(de)(de)是(shi)(shi)(shi)完全相同的(de)(de)(de)油(you)(you)(you)品(pin)(pin),而(er)且是(shi)(shi)(shi)同時(shi)開(kai)始使(shi)用(yong)的(de)(de)(de),為(wei)什(shen)么有(you)的(de)(de)(de)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)油(you)(you)(you)品(pin)(pin)氧化(hua)(hua)速度快(kuai),而(er)有(you)的(de)(de)(de)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)油(you)(you)(you)品(pin)(pin)基本(ben)沒有(you)氧化(hua)(hua)呢?為(wei)此,液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)技(ji)術(shu)人(ren)員(yuan)對各連(lian)(lian)(lian)鑄(zhu)機(ji)(ji)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)運(yun)行(xing)(xing)情(qing)(qing)況進(jin)行(xing)(xing)了(le)了(le)解(jie),通(tong)過現場(chang)查看,發現4號連(lian)(lian)(lian)鑄(zhu)機(ji)(ji)主機(ji)(ji)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)和冷(leng)床液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)油(you)(you)(you)溫長期偏高,一般都(dou)超(chao)過了(le)55℃,有(you)時(shi)超(chao)過了(le)70℃。這兩套(tao)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)都(dou)有(you)板(ban)式冷(leng)卻器,為(wei)什(shen)么冷(leng)卻效果不好呢?是(shi)(shi)(shi)冷(leng)卻器冷(leng)卻效果不好,還是(shi)(shi)(shi)循(xun)(xun)環泵(beng)出(chu)現了(le)問(wen)題(ti)?另外還發現一個情(qing)(qing)況,就(jiu)是(shi)(shi)(shi)這兩套(tao)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)循(xun)(xun)環泵(beng)都(dou)是(shi)(shi)(shi)立(li)式安裝在(zai)油(you)(you)(you)箱頂(ding)部的(de)(de)(de),會不會是(shi)(shi)(shi)循(xun)(xun)環系(xi)(xi)(xi)(xi)統(tong)(tong)運(yun)行(xing)(xing)有(you)問(wen)題(ti)呢?經過與(yu)現場(chang)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)維修(xiu)人(ren)員(yuan)交流了(le)解(jie)到,這兩套(tao)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)循(xun)(xun)環泵(beng)經常(chang)損壞(huai),有(you)時(shi)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)泵(beng)吸不上油(you)(you)(you),還有(you)一次(ci)循(xun)(xun)環泵(beng)的(de)(de)(de)吸油(you)(you)(you)管脫(tuo)落,導致油(you)(you)(you)溫達到了(le)80℃到此,可以完全確定,4號連(lian)(lian)(lian)鑄(zhu)機(ji)(ji)兩套(tao)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)(xi)(xi)(xi)統(tong)(tong)油(you)(you)(you)品(pin)(pin)過度氧化(hua)(hua)完全是(shi)(shi)(shi)因(yin)為(wei)油(you)(you)(you)溫過高造成的(de)(de)(de),而(er)導致油(you)(you)(you)溫過高的(de)(de)(de)根本(ben)原因(yin)在(zai)于循(xun)(xun)環泵(beng)經常(chang)損壞(huai),液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)(you)得不到冷(leng)卻。
5、對油溫(wen)高的問(wen)題分析(xi)
液(ye)(ye)(ye)(ye)壓(ya)(ya)系(xi)(xi)統油(you)(you)(you)溫(wen)高(gao),從(cong)冷(leng)卻(que)角(jiao)度入(ru)手(shou)去(qu)降低(di)油(you)(you)(you)溫(wen)是(shi)正確(que)的(de)(de)(de),但是(shi)應該(gai)還要從(cong)造成油(you)(you)(you)溫(wen)高(gao)的(de)(de)(de)其它原因(yin)去(qu)做分析(xi),看(kan)看(kan)是(shi)否存在(zai)(zai)相關(guan) 問(wen)題。液(ye)(ye)(ye)(ye)壓(ya)(ya)系(xi)(xi)統油(you)(you)(you)溫(wen)高(gao)無非來自于2個方面(mian),一(yi)(yi)個是(shi)液(ye)(ye)(ye)(ye)壓(ya)(ya)系(xi)(xi)統內(nei)部(bu)產生(sheng)的(de)(de)(de)熱(re)(re)(re)量(liang)(liang),比如液(ye)(ye)(ye)(ye)壓(ya)(ya)管道(dao)和(he)液(ye)(ye)(ye)(ye)壓(ya)(ya)缸處在(zai)(zai)高(gao)溫(wen)區域被高(gao)溫(wen)烘烤(kao),里(li)面(mian)流動的(de)(de)(de)液(ye)(ye)(ye)(ye)壓(ya)(ya)油(you)(you)(you)把熱(re)(re)(re)量(liang)(liang)帶(dai)(dai)進了(le)液(ye)(ye)(ye)(ye)壓(ya)(ya)系(xi)(xi)統。通(tong)(tong)過(guo)對(dui)4號(hao)連鑄主機(ji)和(he)冷(leng)床兩(liang)套液(ye)(ye)(ye)(ye)壓(ya)(ya)系(xi)(xi)統的(de)(de)(de)觀(guan)察(cha)發現,上面(mian)說的(de)(de)(de)兩(liang)種(zhong)情況都是(shi)存在(zai)(zai)的(de)(de)(de)。液(ye)(ye)(ye)(ye)壓(ya)(ya)系(xi)(xi)統從(cong)外(wai)部(bu)進入(ru)的(de)(de)(de)熱(re)(re)(re)量(liang)(liang)可以通(tong)(tong)過(guo)防護盡量(liang)(liang)減少,但是(shi)不(bu)能避(bi)免(mian)這部(bu)分的(de)(de)(de)熱(re)(re)(re)量(liang)(liang)只有(you)通(tong)(tong)過(guo)冷(leng)卻(que)器帶(dai)(dai)出(chu)。液(ye)(ye)(ye)(ye)壓(ya)(ya)系(xi)(xi)統內(nei)部(bu)產生(sheng)的(de)(de)(de)熱(re)(re)(re)量(liang)(liang),由于液(ye)(ye)(ye)(ye)壓(ya)(ya)泵和(he)液(ye)(ye)(ye)(ye)壓(ya)(ya)閥等元件存在(zai)(zai)一(yi)(yi)定(ding)量(liang)(liang)的(de)(de)(de)內(nei)泄,會產生(sheng)一(yi)(yi)些(xie)熱(re)(re)(re)量(liang)(liang),這也是(shi)不(bu)可避(bi)免(mian)的(de)(de)(de)。
但是(shi)(shi)有一(yi)(yi)種(zhong)情況就不(bu)正(zheng)常(chang)了,就是(shi)(shi)通過(guo)對各溢(yi)(yi)流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)溫度(du)地測量(liang)發現(xian),兩(liang)套液(ye)壓(ya)(ya)(ya)系(xi)統(tong)(tong)均存(cun)在(zai)(zai)(zai)某(mou)個溢(yi)(yi)流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)溫度(du)偏高的(de)現(xian)象,可(ke)以判(pan)斷(duan)該溢(yi)(yi)流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)存(cun)在(zai)(zai)(zai)溢(yi)(yi)流(liu)(liu)(liu)(liu)現(xian)象。兩(liang)套液(ye)壓(ya)(ya)(ya)站使(shi)用的(de)都是(shi)(shi)恒壓(ya)(ya)(ya)變(bian)(bian)量(liang)泵(beng)(beng),靠(kao)液(ye)壓(ya)(ya)(ya)泵(beng)(beng)調定(ding)系(xi)統(tong)(tong)壓(ya)(ya)(ya)力(li),而(er)溢(yi)(yi)流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)是(shi)(shi)作為安全(quan)閥(fa)(fa)(fa)使(shi)用的(de),換(huan)句話(hua)說,溢(yi)(yi)流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)應該是(shi)(shi)常(chang)閉的(de),而(er)現(xian)在(zai)(zai)(zai)變(bian)(bian)成(cheng)了常(chang)開的(de),這說明(ming)液(ye)壓(ya)(ya)(ya)泵(beng)(beng)和溢(yi)(yi)流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)壓(ya)(ya)(ya)力(li)調定(ding)不(bu)正(zheng)確,溢(yi)(yi)流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)作為安全(quan)閥(fa)(fa)(fa)壓(ya)(ya)(ya)力(li)調定(ding)應該比液(ye)壓(ya)(ya)(ya)泵(beng)(beng)高約(yue)2MPa。而(er)現(xian)在(zai)(zai)(zai),溢(yi)(yi)流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)的(de)調定(ding)壓(ya)(ya)(ya)力(li)低于了液(ye)壓(ya)(ya)(ya)泵(beng)(beng)的(de)調定(ding)壓(ya)(ya)(ya)力(li),導(dao)致變(bian)(bian)量(liang)泵(beng)(beng)達(da)不(bu)到變(bian)(bian)量(liang)點,一(yi)(yi)直工作在(zai)(zai)(zai)最大流(liu)(liu)(liu)(liu)量(liang)狀態,當液(ye)壓(ya)(ya)(ya)系(xi)統(tong)(tong)需要小(xiao)流(liu)(liu)(liu)(liu)量(liang)時,系(xi)統(tong)(tong)產生大量(liang)的(de)多余流(liu)(liu)(liu)(liu)量(liang)只能通過(guo)溢(yi)(yi)流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)溢(yi)(yi)流(liu)(liu)(liu)(liu)了,溢(yi)(yi)流(liu)(liu)(liu)(liu)的(de)過(guo)程中,液(ye)壓(ya)(ya)(ya)能轉化成(cheng)了熱能。
6、結果和結論
綜上所述,4號連鑄機兩(liang)套(tao)液壓(ya)(ya)系(xi)統油(you)(you)(you)溫高的原(yuan)因(yin)主要在于(yu)兩(liang)個方面(mian),一是(shi)(shi)(shi)(shi)由于(yu)液壓(ya)(ya)泵(beng)和溢(yi)流(liu)(liu)閥的壓(ya)(ya)力(li)調節錯誤(wu),導(dao)(dao)致溢(yi)流(liu)(liu)閥溢(yi)流(liu)(liu)產生了異常的能量轉換。二是(shi)(shi)(shi)(shi)循環泵(beng)工(gong)作(zuo)不可(ke)靠,頻繁出現故障導(dao)(dao)致冷卻效(xiao)果較(jiao)差。針對以(yi)上兩(liang)個方面(mian),一是(shi)(shi)(shi)(shi)對液壓(ya)(ya)泵(beng)和溢(yi)流(liu)(liu)閥的壓(ya)(ya)力(li)進(jin)行(xing)重新調節,調節后變(bian)量泵(beng)正常變(bian)量,溢(yi)流(liu)(liu)閥不再(zai)溢(yi)流(liu)(liu);二是(shi)(shi)(shi)(shi)對循環冷卻裝置的改(gai)造,把(ba)立式安(an)裝在油(you)(you)(you)箱上面(mian)的循環泵(beng)改(gai)為在地(di)面(mian)上臥(wo)式安(an)裝。通(tong)過(guo)(guo)這(zhe)兩(liang)個方面(mian)的改(gai)進(jin),這(zhe)兩(liang)套(tao)液壓(ya)(ya)系(xi)統油(you)(you)(you)溫均保持在40℃左(zuo)右(you),在氣溫達到35℃時油(you)(you)(you)溫也(ye)沒有超過(guo)(guo)50℃。另(ling)一方面(mian)通(tong)過(guo)(guo)油(you)(you)(you)液狀(zhuang)(zhuang)(zhuang)態(tai)監(jian)測,可(ke)以(yi)掌握油(you)(you)(you)品的使用狀(zhuang)(zhuang)(zhuang)態(tai),通(tong)過(guo)(guo)油(you)(you)(you)品的使用狀(zhuang)(zhuang)(zhuang)態(tai),可(ke)以(yi)反(fan)映(ying)出液壓(ya)(ya)系(xi)統的工(gong)作(zuo)狀(zhuang)(zhuang)(zhuang)態(tai),所以(yi)油(you)(you)(you)液狀(zhuang)(zhuang)(zhuang)態(tai)監(jian)測可(ke)以(yi)用來指導(dao)(dao)液壓(ya)(ya)設備(bei)的管理,主要是(shi)(shi)(shi)(shi)維護、維修和改(gai)造等內容