Enqubweni yokukhiqizwa kwezimboni nokukhiqiza, amanye amathangi akalwayo kulula ukucwebezela, abonakale kakhulu, adle kakhulu, futhi kulula ukuwaqinisa.Ama-transmitter okucindezela okuhlukile kwe-flange okukodwa nakabili avame ukusetshenziswa kulezi zikhathi., Okufana nalokhu: amathangi, imibhoshongo, amaketela, namathangi ezitshalo zokubhaka;amathangi okugcina uketshezi okukhiqiza amayunithi e-evaporator, amathangi okugcina izinga likaketshezi lokukhipha i-sulfurization kanye nezitshalo zokuhlukanisa i-denitrification.Kokubili izelamani ze-flange ezingashadile neziphindwe kabili zinezicelo eziningi, kodwa zihlukile kumehluko phakathi kokuvula nokuvaliwe.Amathangi avulekile e-single-flange angaba amathangi avaliwe, kanti ama-flange amabili anamathangi avaliwe kubasebenzisi.
Umgomo we-single flange pressure transmitter yokulinganisa ileveli yoketshezi
I-single-flange pressure transmitter yenza ukuguqulwa kwezinga ngokulinganisa ukuminyana kwethangi elivulekile,Isilinganiso sezinga leziqukathi ezivulekile.
Lapho kukala izinga loketshezi lesitsha esivulekile, isidlulisi sifakwa eduze naphansi kwesiqukathi ukuze kulinganiswe ingcindezi ehambisana nobude bezinga le-liquid ngaphezulu kwaso.Njengoba kuboniswe kuMfanekiso 1-1.
Ingcindezi yezinga le-liquid yesitsha ixhunywe ohlangothini oluphezulu lwe-transmitter, futhi uhlangothi oluphansi lokucindezela luvulekele emkhathini.
Uma ileveli yoketshezi ephansi kakhulu yebanga lokushintsha izinga loketshezi olulinganisiwe ingaphezu kwendawo yokufaka yesithumeli, isidlulisi kufanele senze ukufuduka okuhle.
Umfanekiso 1-1 Isibonelo sokulinganisa uketshezi esitsheni esivulekile
Vumela u-X kube ibanga elime mpo phakathi kwezinga likaketshezi eliphansi neliphakeme kakhulu elizokalwa, X=3175mm.
U-Y ibanga eliqondile ukusuka embobeni yokucindezela yesidluliseli ukuya kuleveli yoketshezi ephansi kakhulu, y=635mm.ρ ukuminyana koketshezi, ρ=1.
h iyinhloko yokucindezela okukhulu ekhiqizwa ikholomu enguketshezi X, ku-KPa.
u-e uyinhloko yokucindezela ekhiqizwa ikholomu enguketshezi Y, ku-KPa.
1mH2O=9.80665Pa (okufanayo ngezansi)
Ibanga lokulinganisa lisuka ku-e liye ku-e+h ngakho: h=X·ρ=3175×1=3175mmH2O=31.14KPa
e=y·ρ=635×1= 635mmH2O= 6.23KPa
Okusho ukuthi, uhla lokulinganisa lwesidluliseli yi-6.23KPa～37.37KPa
Kafushane, empeleni sikala ubude bezinga le-liquid:
Ubude bezinga loketshezi H=(P1-P0)/(ρ*g)+D/(ρ*g);
Qaphela: I-P0 ingcindezi yamanje yomkhathi;
I-P1 inani lokucindezela lokulinganisa uhlangothi lokucindezela okuphezulu;
D inani lokufuduka okuyiziro.
Umgomo we-double flange pressure transmitter yokulinganisa ileveli yoketshezi
I-double-flange pressure transmitter yenza ukuguqulwa kweleveli ngokulinganisa ukuminyana kwethangi elivalekile:Uxhumano lwe-Dry impulse
Uma igesi engaphezulu kwendawo ewuketshezi ingafinyeleli, ipayipi elixhumayo ohlangothini lokucindezela okuphansi komthumeli lihlala lomile.Lesi simo sibizwa ngokuthi ukuxhumeka komshayeli okomile.Indlela yokunquma ububanzi bokulinganisa besithumeli siyafana naleyo yezinga loketshezi esitsheni esivulekile.(Bheka Umfanekiso 1-2).
Uma igesi kuketshezi ijiya, uketshezi luzonqwabelana kancane kancane eshubhuni eqondisayo ehlangothini lokucindezela okuphansi kwesidlulisi, okuzodala amaphutha okulinganisa.Ukuze uqede leli phutha, gcwalisa ngaphambili ishubhu eqondisayo eseceleni enengcindezi ephansi yesidluliseli ngoketshezi oluthile.Lesi simo sibizwa ngokuthi i-wet pressure guiding connection.
Kulesi simo esingenhla, kunenhloko yokucindezela ohlangothini oluphansi lwe-transmitter, ngakho-ke ukufuduka okungalungile kufanele kwenziwe (bona Umfanekiso 1-2)
Umfanekiso 1-2 Isibonelo sokulinganisa uketshezi esitsheni esivaliwe
Vumela u-X kube ibanga elime mpo phakathi kwezinga le-liquid eliphansi neliphakeme kakhulu okufanele likalwe, X=2450mm.U-Y ibanga eliqondile ukusuka embobeni yokucindezela yesidluliseli ukuya kuleveli yoketshezi ephansi kakhulu, Y=635mm.
U-Z yibanga ukusuka phezulu kweshubhu eliqondisayo eligcwele uketshezi ukuya kulayini oyisisekelo wesidluliseli, Z=3800mm,
ρ1 ukuminyana koketshezi, ρ1=1.
ρ2 ukuminyana koketshezi olugcwalisayo lwepayipi eseceleni elinengcindezi ephansi, ρ1=1.
h yikhanda elicindezela kakhulu elikhiqizwe yikholomu enguketshezi ehloliwe X, ku-KPa.
u-e yikhanda lokucindezela okukhulu elikhiqizwa ikholamu yoketshezi ehloliwe engu-Y, ku-KPa.
s ikhanda elicindezelayo elikhiqizwa ikholomu egcwele uketshezi engu-Z, ku-KPa.
Ibanga lokulinganisa lisuka ku-(es) liye ku-(h+es), bese
h=X·ρ1=2540×1 =2540mmH2O =24.9KPa
e=Y·ρ1=635×1=635mmH2O =6.23KPa
s=Z·ρ2=3800×1=3800mmH2O=37.27KPa
Ngakho: es=6.23-37.27=-31.04KPa
h+e－s=24.91+6.23－37.27=－6.13KPa
Qaphela: Ngamafuphi, empeleni sikala ubude bezinga le-liquid: ubude bezinga loketshezi H=(P1-PX)/(ρ*g)+D/(ρ*g);
Qaphela: I-PX iwukukala inani lokucindezela kohlangothi oluphansi lokucindezela;
I-P1 inani lokucindezela lokulinganisa uhlangothi lokucindezela okuphezulu;
D inani lokufuduka okuyiziro.
Izinyathelo Zokufaka
Ukufakwa kwe-flange eyodwa kubalulekile
1. Uma isidluliseli se-membrane esihlukanisayo esisodwa se-flange samathangi avulekile sisetshenziselwa ukulinganisa izinga loketshezi lamathangi oketshezi avulekile, uhlangothi luka-L lwesixhumi esibonakalayo sohlangothi lwengcindezi ephansi kufanele luvuleleke emoyeni.
2. Ethangini eliwuketshezi elivaliwe, ishubhu eliqondisayo eliqondisa ukucindezela kuthangi eliwuketshezi kufanele libhobhoze kuhlangothi luka-L lokusebenzelana kohlangothi lwengcindezi ephansi.Icacisa ingcindezi yereferensi yethangi.Ukwengeza, vula njalo i-valve yokudonsa ohlangothini lwe-L ukuze ukhiphe i-condensate ekamelweni le-L, ngaphandle kwalokho kuzodala amaphutha ekulinganisweni kwezinga le-liquid.
3. I-transmitter ingaxhunywa ekufakweni kwe-flange ohlangothini lwe-high-pressure njengoba kuboniswe kuMfanekiso 1-3.I-flange eseceleni kwethangi ngokuvamile iyi-flange ehambayo, elungiswa ngaleso sikhathi futhi ingashiselwa ngokuchofoza okukodwa, okulungele ukufakwa endaweni.
Umfanekiso 1-3 Isibonelo sokufakwa kwe-flange yohlobo lwe-liquid transmitter
1) Lapho ukala izinga loketshezi lwethangi eliwuketshezi, ileveli yoketshezi ephansi kunazo zonke (iphuzu elinguziro) kufanele lisethwe ebangeni elingu-50mm noma ngaphezulu ukusuka enkabeni yophawu lwe-diaphragm oluseceleni lokucindezela okuphezulu.Umfanekiso 1-4:
Umfanekiso 1-4 Isibonelo sokufakwa kwethangi eliwuketshezi
2) Faka i-flange diaphragm ohlangothini lwengcindezi ephezulu (H) kanye nephansi (L) yethangi njengoba kukhonjisiwe kusidlulisi kanye nelebula yenzwa.
3) Ukuze kuncishiswe ithonya lomehluko wokushisa kwemvelo, amashubhu e-capillary ohlangothini lwe-high-pressure angaboshwa ndawonye futhi agxilwe ukuvimbela ithonya lomoya nokudlidliza (amashubhu e-capillary engxenye ende kakhulu kufanele ahlanganiswe ndawonye. futhi ilungisiwe).
4) Ngesikhathi sokusebenza kokufakwa, zama ukungasebenzisi ukucindezela kokudonsa koketshezi oluvala uphawu ku-diaphragm seal ngangokunokwenzeka.
5) Umzimba wokudlulisela kufanele ufakwe ebangeni elingaphezu kuka-600mm ngaphansi kwengxenye yokufakwa kophawu lwe-flange ekude ye-diaphragm seal enengcindezi ephezulu, ukuze umfutho wokwehla woketshezi lwe-capillary seal wengezwe emzimbeni wesidluliseli ngangokunokwenzeka.
6) Yebo, uma ingakwazi ukufakwa 600mm noma ngaphezulu ngaphansi kwengxenye yokufakwa kwengxenye ye-flange diaphragm seal ngenxa yomkhawulo wemibandela yokufaka.Noma lapho umzimba womthumeli ungafakwa ngaphezu kwengxenye yokufaka uphawu lwe-flange ngenxa yezizathu eziqondile, indawo yokufaka kwayo kufanele ihlangabezane nefomula yokubala elandelayo.
1) h: ubude phakathi kwengxenye yokufaka uphawu lwe-diaphragm ekude kanye nomzimba wesidlulisi (mm);
① Uma h≤0, umzimba womthumeli kufanele ufakwe ngaphezu kuka-h (mm) ngaphansi kwengxenye yokufaka uphawu lwe-diaphragm ye-flange.
②Uma u-h>0, umzimba wesidlulisi kufanele ufakwe ngaphansi kuka-h (mm) ngaphezu kwengxenye yokufaka uphawu lwe-diaphragm ye-flange.
2) P: Ukucindezela kwangaphakathi kwethangi eliwuketshezi (Pa abs);
3) I-P0: Umkhawulo ophansi wengcindezi esetshenziswa umzimba wokudlulisa;
4) Ukushisa kwe-ambient: -10℃50℃.
Isikhathi sokuthumela: Dec-15-2021