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Izindlela eziningana zokuxhuma ezivamile zamavalvu ensimbi engagqwali
2024-01-03 09:35:26
Ama-valve ensimbi engagqwali asetshenziswa kabanzi emkhakheni wezimboni. Kunezinhlobo eziningi nezindlela zokuxhuma. Ukuthi yonke i-valve yensimbi engagqwali ixhunywe kanjani epayipini noma okokusebenza akunakuzitshwa. Amavalvu ensimbi engagqwali abonakala enoketshezi olugijimayo, oluvuzayo, oluconsayo, oluvuzayo. Iningi lazo kungenxa yokuthi indlela yokuxhuma efanele ayikhethiwe.Okulandelayo kwethula izindlela ezivamile zokuxhuma i-valve yensimbi engagqwali.
1. Ukuxhumeka kwe-Flange
Ukuxhumeka kwe-Flange kuyindlela yokuxhumana evame ukusetshenziswa kakhulu phakathi kwama-valve ensimbi engagqwali namapayipi noma izinto zokusebenza. Kubhekiselwa ekuxhumaneni okungalahleki lapho ama-flanges, ama-gaskets nama-bolts axhunywe komunye nomunye njengeqoqo lezakhiwo zokuvala ezihlanganisiwe. I-pipe flange isho i-flange esetshenziselwa amapayipi omshini wepayipi, futhi uma isetshenziswa emshinini, ibhekisela ekungeneni nasekuphumeni kwempahla. Izixhumanisi ze-Flange kulula ukuzisebenzisa futhi zingamelana nengcindezi enkulu. Ukuxhumeka kwe-Flange kungasetshenziswa kuma-valve ensimbi engagqwali yobukhulu obuhlukahlukene bokuqamba kanye nezingcindezi zamagama, kodwa kunemikhawulo ethile ekushiseni okusebenzayo. Ngaphansi kwezimo zokushisa eziphakeme, ama-flange axhuma ama-bolts ajwayele ukukhasa futhi abangele ukuvuza. Ngaphansi kwezimo ezijwayelekile, ukuxhumana kwe-Flange kuyanconywa ukuthi kusetshenziswe emazingeni okushisa angu-≤350°C.
2. Ukuxhumana okunentambo
Lena indlela elula yokuxhuma evame ukusetshenziswa kumavalvu amancane ensimbi engagqwali.
1) Ukubekwa uphawu okuqondile: Imicu yangaphakathi neyangaphandle isebenza ngokuqondile njengezimpawu. Ukuze kuqinisekiswe ukuthi uxhumano aluvuzi, amafutha omthofu, ilineni kanye ne-tape yempahla eluhlaza kuvame ukusetshenziselwa ukuyigcwalisa.
2) Ukuvala uphawu okungaqondile: Amandla okuqinisa intambo adluliselwa kuma-gaskets ezindizeni ezimbili, okuvumela ama-gaskets ukuthi asebenze njengezimpawu.
3. Ukuxhumana kwe-Welding
Ukuxhuma okushiselwe kubhekisela ohlotsheni lokuxhuma lapho umzimba wevalvu yensimbi engenasici unomsele wokushisela futhi uxhunywe ohlelweni lwamapayipi ngokushisela. Ukuxhumana okushiselwe phakathi kwama-valve ensimbi engagqwali namapayipi kungahlukaniswa kube yi-butt welding (BW) kanye ne-socket welding (SW). I-valve yensimbi engagqwali i-butt welding uxhumano (BW) ingasetshenziswa kumasayizi ahlukahlukene, izingcindezi kanye nezindawo zokushisa eziphezulu; kuyilapho ukuxhumeka kwe-socket welding (SW) ngokuvamile kulungele ama-valve ensimbi engagqwali ≤DN50.
4. Ukuxhumana komkhono wekhadi
Isimiso sokusebenza sokuxhunywa kwe-ferrule siwukuthi lapho i-nati iqiniswa, i-ferrule ingaphansi kwengcindezi, okwenza ukuthi i-blade yayo ilume odongeni olungaphandle lwepayipi. Ingaphezulu lekhoni elingaphandle le-ferrule lixhumene eduze nendawo yekhoni ngaphakathi kwelunga ngaphansi kwengcindezi, ngaleyo ndlela kuvimbela ngokuthembekile ukuvuza. .Izinzuzo zaleli fomu lokuxhuma yilezi:
1) Usayizi omncane, isisindo esilula, isakhiwo esilula, kulula ukusihlakaza nokuhlanganisa;
2) Amandla okuxhumana aqinile, ukusetshenziswa okubanzi, futhi angakwazi ukumelana nokucindezela okuphezulu (1000 kg/cm²), izinga lokushisa eliphezulu (650℃) kanye nokudlidliza okunomthelela;
3) Izinhlobonhlobo zezinto zingakhethwa, ezifanele ukulwa nokugqwala;
4) Izidingo zokunemba kokucubungula aziphezulu;
5) Kulula ukufaka endaweni ephakeme.
Njengamanje, ifomu lokuxhuma i-ferrule lamukelwe emikhiqizweni yamavalvu ensimbi engenasici enobubanzi obuncane ezweni lami.
Lena indlela yokuxhumana esheshayo edinga amabhawodi amabili kuphela futhi ifanele ama-valve ensimbi engenasici anomfutho ophansi avame ukuhlakazwa.
Ukuxhuma okuziqinisayo kwangaphakathi kuwuhlobo lokuxhuma olusebenzisa ingcindezi ephakathi ukuze uziqinise. Uma umfutho ophakathi umkhulu, amandla aziqinisayo abe mkhulu. Ngakho-ke, leli fomu lokuxhuma lifaneleka kuma-valve ensimbi engenasici. Uma kuqhathaniswa nokuxhumeka kwe-flange, igcina izinto eziningi kanye nabasebenzi, kodwa futhi idinga amandla athile okulayisha ngaphambili ukuze isetshenziswe ngokuthembekile lapho ingcindezi ku-valve ingekho phezulu. Amavalvu ensimbi engagqwali enziwe ngezimiso zokuziqinisa eziqinisayo ngokuvamile amavalvu ensimbi engenasici anomfutho ophezulu.
Kunamanye amafomu amaningi okuxhuma amavalvu ensimbi engagqwali. Isibonelo, ama-valve amancane ensimbi engagqwali angadingeki ahlakazwe ashiselwe emapayipini; amanye amavalvu ensimbi engenasici asebenzisa izixhumi zesokhethi, njll. Abasebenzisi bamavalvu ensimbi engagqwali kufanele bawaphathe ngokuqondile ngokwesimo sangempela.