Intshayelelo
Iimfuno zokuchaneka kunye nokuthembeka komlinganiselo kunye nolawulo lokuhamba kwamanzi amdaka kwizitishi zokucocwa kogutyulo lwe-oilfield ziya ziba phezulu nangaphezulu. Eli nqaku lazisa ukukhethwa kunye nokusebenza kunye nokusetyenziswa kwee-electromagnetic flowmeters. Chaza iimpawu zayo ekukhetheni nasekusetyenzisweni kwayo.
Iimitha ezihambayo sesinye sezixhobo ezimbalwa ekunzima ukuzisebenzisa kunokwenza. Oku kungenxa yokuba umyinge wokuqukuqela sisixa esiguqukayo, kwaye akukho kukhuhlana kwe-viscous kuphela kulwelo olukwintshukumo kodwa kunye neziganeko ezintsonkothileyo zokuqukuqela ezifana nee-vortices ezingazinzanga kunye nokuhamba okusesibini. Isixhobo sokulinganisa ngokwaso sichatshazelwa yizinto ezininzi, ezifana nombhobho, ubungakanani be-caliber, imilo (isangqa, uxande), iimeko zomda, iipropati zomzimba we-medium (ubushushu, uxinzelelo, ubuninzi, i-viscosity, ukungcola, ukubola, njl.) Ujongene neentlobo ezingaphezu kweshumi elinesibini kunye namakhulu eentlobo zeemitha zokuhamba ekhaya nakwamanye amazwe (ezinje ngevolumu, uxinzelelo lokwahlukana, i-injini yomoya, indawo, i-electromagnetic, i-ultrasonic, kunye nemitha yokuhamba kwe-thermal ephuhliswe ngokulandelelana), indlela yokhetho olufanelekileyo lwezinto ezifana nokuhamba, iimfuno zofakelo, iimeko zokusingqongileyo kunye noqoqosho zisisiseko kunye nesiseko sokusetyenziswa kakuhle kweemitha zokuhamba. Ukongeza ekuqinisekiseni umgangatho wesixhobo ngokwawo, ukunikezelwa kwedatha yenkqubo kunye nokuba ukufakela, ukusetyenziswa, kunye nokugcinwa kwesixhobo kunengqiqo kubaluleke kakhulu. Eli nqaku lazisa ngochongo kunye nokusetyenziswa kwemitha yombane yombane.
Ukukhetha imitha yokuqukuqela kombane
Ngophuhliso lwenzululwazi kunye nobuchwepheshe, iteknoloji yokufumanisa ngokuzenzekelayo iye yaphuhliswa kakhulu, kunye nezixhobo zokufumanisa ngokuzenzekelayo ziye zasetyenziswa ngokubanzi kunyango lokucocwa kwamanzi amdaka, ukwenzela ukuba izityalo zokucocwa kwamanzi amdaka zingagcini nje ukusindisa uninzi lwabasebenzi kunye nezixhobo eziphathekayo kodwa kubaluleke kakhulu, zinokuthi zibe ngexesha elifanelekileyo Yenza uhlengahlengiso kwinkqubo. Eli nqaku liza kuthatha imitha ye-electromagnetic flow meter ye-Hangzhou Asmik njengomzekelo wokwazisa ukusetyenziswa kwezixhobo zokubona ngokuzenzekelayo kunyango lwelindle kunye neengxaki ezikhoyo.
Umgaqo-siseko we-electromagnetic flow meter
Isixhobo sokufumanisa ngokuzenzekelayo sesinye seenkqubo ezisezantsi ezingundoqo kwinkqubo yolawulo oluzenzekelayo. Isixhobo sokubona okuzenzekelayo siqulunqwe ikakhulu ngamalungu amathathu: ① isivamvo, esebenzisa imiqondiso eyahlukeneyo ukubona ubungakanani obulinganisiweyo be-analog; ② umthumeli, oguqula umqondiso we-analog olinganiswe yinzwa kwi-4-20mA umqondiso wangoku kwaye uyithumele kwi-In the programmable logic controller (PLC); ③ umboniso, obonisa iziphumo zomlinganiselo ngokuzenzekelayo kwaye unike iziphumo. La malungu mathathu adityaniswe ngokwendalo, kwaye ngaphandle kwayo nayiphi na inxalenye, akanakubizwa ngokuba sisixhobo esipheleleyo. Isixhobo sokufumanisa ngokuzenzekelayo sisetyenziswe ngokubanzi kwimveliso yoshishino ngenxa yeempawu zayo zokulinganisa ngokuchanekileyo, umboniso ocacileyo, kunye nokusebenza okulula. Ngaphezu koko, isixhobo sokufumanisa ngokuzenzekelayo sinonxibelelwano kunye ne-microcomputer ngaphakathi, kwaye yinxalenye ebalulekileyo yenkqubo yokulawula ngokuzenzekelayo. Ibizwa ngokuba "Amehlo eNkqubo yoLawulo oluSebenzayo".
Ukukhetha imitha yokuqukuqela kombane
Kwimveliso ye-oilfield, inani elikhulu lamanzi amdaka anamafutha liya kuveliswa ngenxa yeemfuno zenkqubo yokuvelisa, kwaye isikhululo sokucoca ukungcola kufuneka sibeke iliso lokuhamba kwamanzi amdaka. Kuyilo lwangaphambili, ezininziiimitha zokuhambaisetyenzisiwe iimitha zokuqukuqela ze-vortex kunye neemitha zokuhamba kwe-orifice. Nangona kunjalo, kwizicelo ezisebenzayo, kufumaniseka ukuba ixabiso elilinganisiweyo lokubonisa ukugeleza lineempembelelo ezinkulu ukusuka ekuhambeni okuyinyani, kwaye ukutenxa kuncitshiswe kakhulu ngokutshintshela kwi-electromagnetic flow meter.
Ngokweempawu zogutyulo olunotshintsho olukhulu lokuhamba, ukungcola, ukubola okuphantsi, kunye nokuhamba kombane okuthile, ii-electromagnetic flowmeters lukhetho olulungileyo lokulinganisa ukuhamba kwamanzi amdaka. Inesakhiwo esihlangeneyo, ubungakanani obuncinci, kunye nofakelo olufanelekileyo, ukusebenza kunye nokugcinwa. Ngokomzekelo, inkqubo yokulinganisa ithatha uyilo olukrelekrele, kwaye ukutywinwa ngokubanzi kuqiniswa, ngoko kunokusebenza ngokuqhelekileyo kwiindawo ezinzima.
Oku kulandelayo sisingeniso esifutshane kwimigaqo yokhetho, iimeko zofakelo, kunye nezilumkiso zei-electromagnetic flowmeters.
Ukukhethwa kweCaliber kunye noluhlu
Umgangatho we-transmitter udla ngokufana naleyo yenkqubo yemibhobho. Ukuba inkqubo yemibhobho iza kuyilwa, ikhelibhu ingakhethwa ngokoluhlu lokuhamba kunye nesantya sokuhamba. Kwiimitha zokuhamba kwe-electromagnetic, umlinganiselo wokuhamba ngu-2-4m / s ufanelekile ngakumbi. Kwiimeko ezikhethekileyo, ukuba kukho iinqununu eziqinileyo kwi-liquid, ngokuqwalasela ukugqoka kunye nokukrazula, izinga lokuhamba eliqhelekileyo ≤ 3m / s lingakhethwa. Kuba lula ukuqhoboshela ulawulo fluid. Isantya sokuhamba ≥ 2m/s sinokukhethwa. Emva kokuba isantya sokuqukuqela simisiwe, umgangatho wothumelo unokumiselwa ngokwe qv=D2.
Uluhlu lwe-transmitter lunokukhethwa ngokwemigaqo emibini: enye kukuba isikali esipheleleyo sesixhobo sikhulu kunexabiso eliphezulu elilindelekileyo lokuhamba; enye kukuba ukuhamba okuqhelekileyo kukhulu kune-50% yesikali esipheleleyo sesixhobo sokuqinisekisa ukuchaneka komlinganiselo othile.
Ukukhethwa kweqondo lokushisa kunye noxinzelelo
Uxinzelelo lolwelo kunye nobushushu obunokulinganisa imitha ye-electromagnetic flow meter bulinganiselwe. Xa ukhetha, uxinzelelo lokusebenza kufuneka lube ngaphantsi koxinzelelo oluchaziweyo lokusebenza lwemitha yokuhamba. Okwangoku, imilinganiselo yoxinzelelo olusebenzayo lwee-flowmeters ze-electromagnetic eziveliswe ekhaya zezi: ububanzi bungaphantsi kwe-50mm, kwaye uxinzelelo lokusebenza yi-1.6 MPa.
Isicelo kwisikhululo sokucocwa kwamanzi amdaka
Isikhululo sokucocwa kwamanzi amdaka sisebenzisa imitha yokuhamba yombane ye-HQ975 eveliswe nguShanghai Huaqiang. Ngophando nohlalutyo lwemeko yesicelo sesikhululo sokucocwa kwamanzi amdaka eBeiliu seNombolo. Isimbuku seemitha ezihambayo ezisi-7 eziquka ukuhlamba umva, ukurisayiklishwa kwamanzi, kunye neemitha zokuhamba kwamanzi zangaphandle zinofundo nomonakalo ongachanekanga, kunye nezinye izikhululo nazo zineengxaki ezifanayo.
Ubume bangoku kunye neengxaki ezikhoyo
Emva kweenyanga eziliqela zokusebenza, ngenxa yobukhulu obukhulu bomthamo wokuhamba kwamanzi angenayo, umlinganiselo wemitha yokuhamba kwamanzi engenayo wawungachanekanga. Ukugcinwa kokuqala akuzange kuyisombulule ingxaki, ngoko ke ukuhamba kwamanzi kunokuqikelelwa kuphela ngokuhanjiswa kwamanzi angaphandle. Emva konyaka omnye wokusebenza, ezinye iimitha zokuqukuqela zachaphazeleka kukubethwa nokulungiswa kombane, kwaye ufundo lwalungachanekanga emva komnye. Ngenxa yoko, ufundo lwazo zonke iimitha zokuhamba kwe-electromagnetic azinaxabiso lereferensi. Ngamanye amaxesha kukho isenzeko esiguqukayo okanye akukho magama. Zonke iinkcukacha zemveliso yamanzi ziqikelelwa amaxabiso. Umthamo wamanzi wemveliso wesikhululo sonke ngokusisiseko ukwimeko yokungabikho komlinganiselo. Inkqubo yomthamo wamanzi kwiingxelo ezahlukeneyo zedatha lixabiso eliqikelelweyo, elingenalo umthamo wamanzi ochanekileyo kunye nonyango. Ukuchaneka kunye nokunyaniseka kwedatha eyahlukeneyo ayinakuqinisekiswa, okwandisa ubunzima bokulawulwa kwemveliso.
Kwimveliso yemihla ngemihla, emva kokuba isixhobo sinengxaki, isikhululo kunye nabasebenzi bokulinganisa umgodi baxela kwisebe elinobuchule ngamaxesha amaninzi kwaye baqhagamshelane nomenzi wokulungisa amaxesha amaninzi, kodwa kwakungekho mphumo, kwaye inkonzo emva kokuthengisa yayimpofu. Kwakufuneka kuqhagamshelwane nabasebenzi bolondolozo izihlandlo ezininzi ngaphambi kokufika kwindawo yexhwayelo. Iziphumo azifanelekanga.
Ngenxa yokuchaneka kakubi kunye nezinga eliphezulu lokungaphumeleli kwesixhobo sokuqala, kunzima ukuhlangabezana neemfuno zezalathisi ezahlukeneyo zokulinganisa emva kokugcinwa kunye nokulinganisa. Emva kophando oluninzi kunye nezifundo, iyunithi yomsebenzisi ingenisa isicelo sokuchithwa, kwaye isebe elinobuchule lokulinganisa kunye nokulawula okuzenzekelayo kweyunithi inoxanduva lokuvunywa. . Iimitha ze-HQ975 ze-electromagnetic flow metres ezingafikelelanga kubomi benkonzo obuchaziweyo, kodwa zinobomi obude benkonzo, umonakalo omkhulu okanye ukonakaliswa kokwaluphala kuyalahlwa kwaye kuhlaziywe, kwaye ezinye iintlobo ze-electromagnetic flowmeters zitshintshwa ngokwale migaqo yokukhetha ingentla ngokuhambelana nemveliso yokwenene.
Ke ngoko, ukhetho olufanelekileyo kunye nokusetyenziswa okuchanekileyo kwee-electromagnetic flowmeters kubaluleke kakhulu ukuqinisekisa ukuchaneka komlinganiselo kunye nokwandisa ubomi benkonzo yesixhobo. Ukukhethwa kweemitha ezijikelezayo kufuneka kusekelwe kwiimfuno zemveliso, ukuqala kwimeko yokwenene yonikezelo lwemveliso yesixhobo, ngokucokisekileyo kuqwalaselwe ukhuseleko, ukuchaneka kunye noqoqosho lokulinganisa, kunye nokumisela indlela yesixhobo sokulinganisa isampuli kunye nohlobo lwesixhobo sokulinganisa ngokobume kunye nokuhamba kolwelo olulinganisiweyo kunye neenkcukacha.
Ukukhetha ngokuchanekileyo iinkcukacha zesixhobo kwakhona yinxalenye ebalulekileyo yokuqinisekisa ubomi benkonzo kunye nokuchaneka kwesixhobo. Ingqwalasela ekhethekileyo kufuneka ihlawulwe ekukhethweni koxinzelelo lwe-static kunye nokumelana nokushisa. Uxinzelelo lwe-static lwesixhobo luyinqanaba lokumelana noxinzelelo, olufanele lube lukhulu kancinci kunoxinzelelo olusebenzayo lomgangatho olinganisiweyo, ngokuqhelekileyo amaxesha angama-1.25, ukuqinisekisa ukuba akukho kuvuza okanye ingozi eyenzekayo. Ukukhethwa koluhlu lokulinganisa ubukhulu becala lukhetho lomda ophezulu wesikali sesixhobo. Ukuba ikhethiweyo incinci kakhulu, iya kulayishwa ngokulula kwaye yonakalise isixhobo; ukuba ikhethwe inkulu kakhulu, iya kuthintela ukuchaneka komlinganiselo. Ngokuqhelekileyo, ikhethwe njenge-1.2 ukuya ku-1.3 amaxesha exabiso eliphezulu lokuhamba komsebenzi wokwenene.
Isishwankathelo
Phakathi kwazo zonke iintlobo zeemitha zokuqukuqela zamanzi amdaka, imitha yokuqukuqela ye-electromagnetic inokusebenza ngcono, kwaye imitha yokuqukuqela ejikelezayo inoluhlu olubanzi lwezicelo. Kuphela ngokuqonda ukusebenza ngokufanelekileyo kweemitha zokuhamba kunokuthi kukhethwe imitha yokuhamba kwaye yenzelwe ukwenza umlinganiselo kunye nolawulo lokuhamba kwamanzi amdaka Ukuchaneka kunye nokuthembeka kweemfuno zifezekisiwe. Ngesiseko sokuqinisekisa ukusebenza ngokukhuselekileyo kwesixhobo, zama ukuphucula ukuchaneka kunye nokugcinwa kwamandla kwesixhobo. Ngenxa yesi sizathu, akufuneki kuphela ukukhetha isixhobo sokubonisa esihlangabezana neemfuno zokuchaneka kodwa kunye nokukhetha indlela yokulinganisa efanelekileyo ngokweempawu zendlela yokulinganisa.
Ngamafutshane, akukho ndlela yokulinganisa okanye i-flow meter enokuziqhelanisa nolwelo olwahlukeneyo kunye neemeko zokuhamba. Iindlela ezahlukeneyo zokulinganisa kunye nezakhiwo zifuna imisebenzi eyahlukeneyo yokulinganisa, iindlela zokusetyenziswa, kunye neemeko zokusetyenziswa. Uhlobo ngalunye luneenzuzo zalo ezizodwa kunye nokusilela. Ngoko ke, olona hlobo lulungileyo olukhuselekileyo, oluthembekileyo, olunoqoqosho, noluhlala luhleli kufuneka lukhethwe ngokusekelwe kuthelekiso olubanzi lweendlela ezahlukeneyo zokulinganisa kunye neempawu zesixhobo.
Ixesha lokuposa: Feb-10-2023