Ukuxhumeka okugoqekile kuwumzimba wevalvu onezingqimba kuzo zombili izinhlangothi, ezihambisana nezingqimba ezisepayipini, ngokubopha iflange efakwe epayipini. Ukuxhumeka okugoqekile uhlobo lokuxhumana kwevalvu olusetshenziswa kakhulu. Amaflange anezingqimba ezigoqekile (RF), indiza (FF), i-convex kanye ne-concave (MF) kanye nezinye izindawo. Ngokwesimo sobuso obuhlangene, ingahlukaniswa ngezinhlobo ezilandelayo:
(1) uhlobo olubushelelezi: lwe-valve enomfutho ophansi. Ukucubungula kulula kakhulu;
(2) uhlobo olugobile noluyi-convex: umfutho ophezulu wokusebenza, ungasebenzisa i-gasket eqinile;
(3) uhlobo lomsele we-tenon: i-gasket enokuguqulwa okukhulu kwepulasitiki ingasetshenziswa kabanzi ezindaweni ezigqwalisayo, futhi umphumela wokuvala ungcono;
(4) uhlobo lomsele we-trapezoidal: indandatho yensimbi eyisiyingi njenge-gasket, esetshenziswa ku-valve yokusebenza kwengcindezi ≥64 kg/cm2, noma i-valve yokushisa okuphezulu;
(5) Uhlobo lwelensi: i-gasket isesimweni selensi, eyenziwe ngensimbi. Isetshenziselwa amavalvu omfutho ophezulu anomfutho osebenzayo ≥ 100kg/cm2, noma amavalvu okushisa okuphezulu;
(6) Uhlobo lwe-O-ring: lolu uhlobo olusha lokuxhumeka kwe-flange, luvela kuzo zonke izinhlobo ze-O-ring yerabha, futhi luthuthukisiwe, luthembeke kakhulu emphumela wokuvala kune-gasket ejwayelekile eyisicaba.
(1) Ukuxhumeka kokushisela izinqe: zombili iziphetho zomzimba wevalvu zicutshungulwa zibe umsele wokushisela izinqe ngokwezidingo zokushisela izinqe, okuhambisana nomsele wokushisela ipayipi, bese ziqiniswa epayipini ngokushisela.
(2) uxhumano lokushisela amasokhethi: zombili iziphetho zomzimba wevalvu zicutshungulwa ngokwezidingo zokushisela amasokhethi futhi zixhunywe nepayipi ngokushisela amasokhethi.
Ukuxhumeka okunentambo kuyindlela elula yokuxhuma futhi kuvame ukusetshenziselwa ama-valve amancane. Umzimba we-valve ucutshungulwa ngokwentambo ejwayelekile, futhi kunezinhlobo ezimbili zentambo yangaphakathi nentambo yangaphandle. Ehambisana nentambo epayipini. Ukuxhumeka okunentambo kuhlukaniswe ngezimo ezimbili:
(1) ukuvala okuqondile: imicu yangaphakathi neyangaphandle idlala indima yokuvala ngqo. Ukuze kuqinisekiswe ukuthi ilunga alivuzi, ngokuvamile nge-oyela we-lead, i-hemp kanye ne-PTFE ibhande lokugcwalisa izinto zokusetshenziswa; Phakathi kwazo, ibhande le-PTFE lezinto zokusetshenziswa lisetshenziswa kabanzi. Le nto inokumelana okuhle nokugqwala, umphumela omuhle kakhulu wokuvala, kulula ukuyisebenzisa nokuyigcina, lapho ihlukaniswa, ingasuswa ngokuphelele, ngoba iyingqimba yefilimu engaqinile, ingcono kakhulu kunamafutha we-lead, i-hemp.
(2) ukuvala ngokungaqondile: amandla okuqinisa izikulufo adluliselwa ku-gasket phakathi kwalezi zindiza ezimbili, ukuze i-gasket idlale indima yokuvala.
Kunezinhlobo ezinhlanu zezintambo ezivame ukusetshenziswa:
(1) Intambo evamile yokukala;
(2) Intambo evamile ye-intshi;
(3) Intambo yepayipi yokuvala intambo;
(4) intambo yepayipi yokuvala engenantambo;
(5) Izintambo zepayipi ezijwayelekile zaseMelika.
Isingeniso esijwayelekile simi kanje:
① Izinga lomhlaba wonke le-ISO228/1, DIN259, lentambo ehambisanayo yangaphakathi neyangaphandle, ikhodi G noma i-PF(BSP.F);
② I-ISO7/1 ejwayelekile yesiJalimane, i-DIN2999, i-BS21, yekhoni yezinyo langaphandle, intambo yangaphakathi ehambisanayo yezinyo, ikhodi i-BSP.P noma i-RP/PS;
③ I-ISO7/1 ejwayelekile yaseBrithani, i-BS21, intambo ye-taper yangaphakathi nangaphandle, ikhodi ye-PT noma ye-BSP.TR noma ye-RC;
④ I-ANSI B21 ejwayelekile yaseMelika, intambo ye-taper yangaphakathi nangaphandle, ikhodi ye-NPT G(PF), i-RP(PS), i-RC (PT) izinyo I-Angle ingu-55°, i-Angle yezinyo le-NPT ingu-60°BSP.F, i-BSP.P kanye ne-BSP.TR zibizwa ngokuthi amazinyo e-BSP.
Kunezinhlobo ezinhlanu zezintambo zamapayipi ezijwayelekile e-United States: i-NPT yokusetshenziswa okuvamile, i-NPSC yezintambo zamapayipi angaphakathi eziqondile zokufakelwa, i-NPTR yokuxhuma induku yokuqondisa, i-NPSM yezintambo zamapayipi eziqondile zokuxhuma kwemishini (ukuxhuma kwemishini okulingana mahhala), kanye ne-NPSL yokuxhuma kwemishini okukhululekile okulinganayo ngamantongomane akhiyayo. Ingeyentambo yamapayipi avaliwe angahlanganisiwe (N: standard yaseMelika; P: ipayipi; T: Taper)
4. Ukuxhumeka kwe-Taper
Umgomo wokuxhuma nokuvala wesikhafu ukuthi lapho inathi iqinisiwe, isikhafu sicindezelwa, ukuze unqenqema lungene odongeni lwangaphandle lwepayipi, bese isikhafu sangaphandle sesikhafu sivalwe ngokuqinile ngesikhonkwane somzimba ohlangene ngaphansi kwengcindezi, ukuze sikwazi ukuvimbela ngokuthembekile ukuvuza. Njengokuthiama-valve ezinsimbi.Izinzuzo zalolu hlobo lokuxhumana yilezi:
(1) Umthamo omncane, isisindo esincane, isakhiwo esilula, ukuqaqwa nokuhlanganiswa okulula;
(2) i-relay enamandla, ukusetshenziswa okubanzi, ingamelana nokucindezela okuphezulu (1000 kg/isentimitha lesikwele), izinga lokushisa eliphezulu (650℃) kanye nokudlidliza komthelela;
(3) bangakhetha izinto ezahlukahlukene, ezifanele ukuvimbela ukugqwala;
(4) ukunemba komshini akuphezulu;
(5) kulula ukuyifaka ezindaweni eziphakeme.
5. Ukuxhumeka kwe-clamp
Kuyindlela yokuxhuma okusheshayo edinga amabhawodi amabili kuphela futhi ifanele amavalvu anomfutho ophansi avame ukususwa.
Isikhathi sokuthunyelwe: Feb-22-2022