Iimpompo ezimbini zokukhulula ipropane ezilinganiswe kwi-30 horsepower (hp) zisebenza ngokuqhubekayo kumazinga aphezulu okuhamba ngaphezu komthamo olinganisiweyo woyilo we-110 galoni ngomzuzu (gpm) .Ngexesha lokuthuthwa okuqhelekileyo, impompo isebenza kwi-190 gpm, esebenzayo ngaphandle kwegophe lempompo.Impompo isebenza kwi-160% ye-Best Efficiency Point (BEP), engamkelekanga.Ngokusekelwe kwimbali yokusebenza, impompo isebenza kabini ngeveki kunye nexesha eliqhelekileyo lokugijima kweyure enye. impompo yenze ukulungiswa okukhulu emva kweminyaka emithandathu yokusebenza.Ixesha eliqikelelweyo phakathi kokulungiswa okukhulu malunga nenyanga ye-1, efutshane kakhulu.Ezi mpompo zithathwa njengokuthembeka okuphantsi, ngakumbi ekubeni inkqubo yolwelo ithathwa njengecocekile ngaphandle kokuqina okumisiweyo.Propane ukukhulula iimpompo kubalulekile ukugcina amanqanaba epropane ekhuselekileyo yokusebenza okuthembekileyo kwegesi yendalo (NGL) Ukusetyenziswa kokuphuculwa kunye nokunciphisa ukukhuselwa kwempompo kuya kuthintela umonakalo.
Ukugqiba isizathu sokuhamba okuphezulu, phinda ubale ilahleko ye-friction yenkqubo yokubhobhoza ukujonga ukuba ipompo yenziwe ngokugqithiseleyo.Ngoko ke, yonke imizobo ye-isometric echaphazelekayo iyafuneka.Ngokuphonononga imibhobho kunye ne-instrumentation diagrams (P & IDs), i-isometrics yokubhobhoza efunekayo uzimisele ukunceda ukubala ilahleko yokuxhuzula.Umgca wokufunxa opheleleyo we-isometric wempompo unikiwe.Iimbono ze-isometric zezinye iilayini zokukhupha azikho.Ngoko ke, uqikelelo oluqiqileyo lokukhuhla komgca wokukhupha impompo kuye kwamiselwa ngokusekelwe kwiiparamitha zokusebenza zempompo zangoku. iyunithi B umgca wokufunxa ucatshangelwa ekubaleni, njengoko kubonisiwe eluhlaza kuMfanekiso 1.
Ukumisela ubude obulinganayo bemibhobho yokukhupha umbhobho wokukhupha, iiparitha ezisebenzayo zempompo zisetyenzisiwe (Umfanekiso 2) . Ekubeni zombini iloli kunye nenqanawa yokuya kuyo inemigca yokulinganisa uxinzelelo, oku kuthetha ukuba umsebenzi owodwa wempompo unokwahlulwa kabini. .Umsebenzi wokuqala kukuphakamisa ulwelo ukusuka kwinqanaba lelori ukuya kwinqanaba lesikhongozeli, ngelixa umsebenzi wesibini kukunqoba ukukhuhlana kwimibhobho edibanisa ezimbini.
Isinyathelo sokuqala kukumisela ubude betyhubhu ye-friction elinganayo ukubala intloko epheleleyo (ΔHtotal) kwidatha efunyenweyo.
Ekubeni intloko iyonke sisimbuku sentloko yokukhuhlana kunye nentloko yokuphakama, intloko yefriction inokumiselwa yi-Equation 3.
apho i-Hfr ithathwa njengentloko ye-friction (ilahleko edibeneyo) yenkqubo yonke (okt imigca yokufunxa kunye nokukhupha).
Ngokujonga kwi-Figure 1, ilahleko ye-friction ibalwe kumgca wokufunxa weYunithi B iboniswe kuMzobo 4 (190 gpm) kunye noMzobo 5 (110 gpm).
Ukukhuhlana kwesihluzi kufuneka kuthathelwe ingqalelo ekubaleni.Isiqhelo sokucoca ngaphandle komnatha kulo mzekelo yiponti eyi-1 nge-intshi yesikwere (psi), elingana ne-3 feet (ft). Kwakhona, qwalasela ilahleko yefriction ye-hose, emalunga neenyawo ezi-3.
Isishwankathelo, ilahleko ye-friction ye-suction line kwi-190 gpm kunye ne-pump rated flow (110 gpm) kwi-Equations 4 kunye ne-5.
Isishwankathelo, ilahleko ye-friction kumgca wokukhupha inokumiselwa ngokukhupha i-friction ye-system iyonke i-Hfr kwi-suction line friction, njengoko kuboniswe kwi-Equation 6.
Ekubeni ilahleko ye-friction yomgca wokukhupha ibalwa, ubude obulinganayo bokukhuhlana komgca wokukhupha bunokuqikelelwa ngokusekelwe kububanzi bombhobho owaziwayo kunye nesantya sokuhamba kumbhobho. of 4″ umbhobho kwi-190 gpm ibalwa ukuba yi-7.2 yeenyawo.Ngoko ke, ubude obulinganayo bokukhuhlana komgca wokukhupha bungabalwa ngokweEquation 7.
Ukusebenzisa ubude obulinganayo bombhobho wokukhupha ngasentla, ukuxutywa kombhobho wokukhupha kuyo nayiphi na isantya sokuhamba kungabalwa ngokusebenzisa nayiphi na isoftware yeqhekeza lombhobho.
Ekubeni ukusebenza kwefektri yempompo ebonelelwe ngumthengisi ayizange ifike kwi-190 gpm flow, i-extrapolation yenziwe ukugqiba ukusebenza kwempompo phantsi kokusebenza okuphezulu okukhoyo. I-equation ye-LINEST kwi-Excel.I-equation emele i-curve yentloko yepompo inokuqikelelwa ngomyalelo wesithathu we-polynomial.I-Equation 8 ibonisa i-polynomial efanelekileyo kakhulu yovavanyo lwefektri.
Umzobo we-7 ubonisa i-curve yokuvelisa (eluhlaza) kunye ne-curve yokumelana (obomvu) kwiimeko zangoku kwintsimi kunye ne-valve ye-bleed evulekile ngokupheleleyo.Khumbula ukuba ipompo inezigaba ezine.
Ukongezelela, umgca ohlaza okwesibhakabhaka ubonisa i-curve yenkqubo, ucinga ukuba i-valve yokukhupha i-valve yokuvala ivaliwe ngokuyinxenye.Uxinzelelo olusondeleyo olusondeleyo kwi-valve luyi-234 yeenyawo.
Umzobo we-8 ubonisa imeko efanelekileyo xa ipompo iyancipha ukusuka kwizine ukuya kwii-impellers ezimbini (ukukhanya okuluhlaza).
Ukongezelela, umgca ohlaza okwesibhakabhaka ubonisa i-curve yenkqubo xa ipompo imisiwe kwaye i-valve yokukhupha i-valve yokuvala ivaliwe ngokuyinxenye.Uxinzelelo olusondeleyo olusondeleyo kwi-valve luyi-85 yeenyawo.Bona isibalo sokuqala kwi-Figure 9.
Uphando loyilo lwenkqubo lubonakalise ukugqithiswa kwentloko efunekayo yokwahlukana ngenxa yoyilo olungalunganga, ukulahlekelwa ubukho bomgca wokulinganisa igesi / umphunga phakathi komphezulu welori kunye nomphezulu womkhumbi.Ngokwenkqubo yedatha, uxinzelelo lomphunga wepropane luyahluka. ngokuphawulekayo ukusuka ebusika ukuya ehlotyeni.Ngoko uyilo loqobo lubonakala lwenziwa ngoxinzelelo lomphunga oluphantsi kwilori (ebusika) kunye noxinzelelo lomphunga oluphezulu kwisikhongozeli (ehlotyeni) engqondweni, engalunganga.Ukusukela ezi zimbini zihlala ziqhagamshelwe usebenzisa umgca olungelelanisiweyo, utshintsho kuxinzelelo lomphunga luya kuba lungabalulekanga kwaye akufanele luthathelwe ingqalelo kwi-pump umahluko wentloko yokulinganisa.
Kunconywa ukuba unciphise umpompo ukusuka kwizine ukuya kwii-impellers ezimbini kunye ne-throttle valve yokukhupha malunga neenyawo ze-85. Qinisekisa ukuba i-valve kufuneka ihlanjululwe kuze kube yilapho ukuhamba kufikelele kwi-110 gpm. akukho monakalo wangaphakathi.Ukuba i-valve yangaphakathi yokugquma ayenzelwanga kwiimeko ezinjalo, i-factory iya kufuna ukuqwalasela isenzo esingakumbi.Ukuze umise, i-impeller yokuqala kufuneka ihlale.
U-Wesam Khalaf Allah uneminyaka eyisibhozo yamava e-Saudi Aramco.Uyingcali kwiimpompo kunye ne-mechanical seals kwaye wayebandakanyeka ekuthumeni nasekuqaliseni i-Shaybah NGL njengenjineli ethembekileyo.
U-Amer Al-Dhafiri yingcali yobunjineli engaphezulu kweminyaka engama-20 yamava kwiimpompo kunye nezitywina zoomatshini zeSaudi Aramco.Ngolwazi olungakumbi, tyelela aramco.com.
Ixesha lokuposa: Feb-21-2022
