Amavalvu avame ukuxhunywa kumapayipi ngezindlela ezahlukene njengezintambo, ama-flange, ukushisela, ama-clamp, nama-ferrule. Ngakho-ke, ekukhetheni ukusetshenziswa, ungakhetha kanjani?
Yiziphi izindlela zokuxhumanisa ama-valve namapayipi?
1. Ukuxhumeka Okunezintambo: Ukuxhumeka Okunezintambo kuyindlela lapho iziphetho ezimbili zevalvu zicutshungulwa khona zibe yizintambo zangaphakathi noma izintambo zangaphandle ukuze zixhunywe nepayipi. Ngokuvamile, amavalvu ebhola angaphansi kwamasentimitha angu-4 namavalvu embulunga, amavalvu esango kanye namavalvu okuhlola angaphansi kwamasentimitha angu-2 ngokuvamile anezintambo. Isakhiwo sokuxhumeka okunezintambo silula, isisindo silula, futhi ukufakwa nokuhlukaniswa kulula kakhulu ukulungiswa nokufakwa esikhundleni. Njengoba ivalvu izokhula ngaphansi kwethonya lokushisa elizungezile kanye nokushisa okuphakathi ngesikhathi sokusetshenziswa, ukuqinisekisa ukusebenza kahle kokuvala, ama-coefficients okwandisa wezinto ezimbili ekugcineni kokuxhuma kufanele acatshangelwe ngokugcwele. Kungase kube neziteshi ezinkulu zokuvuza ekuxhumeni okunezintambo, ngakho-ke ama-sealant, amateyipu okuvala noma ama-filler angasetshenziswa ukuvimba lezi ziteshi ukwandisa ukusebenza kokuvala. Uma inqubo nezinto zomzimba wevalvu zingashintshwa, zingashintshwa futhi ngemva kokuxhumeka okunezintambo. Ubulili bungaba ngcono.
2. Ukuxhumeka kwe-Flange: Ukuxhumeka kwe-Flange kuyindlela yokuxhuma evame kakhulu kuma-valve. Ukufakwa nokuhlukaniswa kulula kakhulu, futhi ukuxhumana kwe-flange kuthembekile ekuvaleni, okuyinto evame kakhulu kuma-valve anomfutho ophezulu kanye nobubanzi obukhulu. Kodwa-ke, ukuphela kwe-flange kuyasinda, futhi izindleko ziphezulu. Ngaphezu kwalokho, lapho izinga lokushisa lidlula ama-350 ℃, ngenxa yokukhululeka kokukhukhuleka kwama-bolts, ama-gaskets nama-flanges, umthwalo wama-bolts uzoncishiswa kakhulu, futhi ukuxhumana kwe-flange okunokucindezeleka okukhulu kungavuza, okungafanele ukusetshenziswa.
3. Ukuxhumeka okuhlanganisiwe Ukuxhumeka okuhlanganisiwe kuvame ukuba nezinhlobo ezimbili zezakhiwo: ukushisela amasokhethi kanye nokushisela izinqe. Ngokuvamile, ukushisela amasokhethi kusetshenziselwa ama-valve anomfutho ophansi. Isakhiwo sokushisela sama-valve okushisela amasokhethi silula ukusicubungula futhi kulula ukusifaka. Ukushisela izinqe kusetshenziselwa i-valve enomfutho ophezulu kunezindleko eziphezulu, futhi ukushisela kudinga ukugoqwa ngokwezinga lepayipi, okunzima ukulicubungula, futhi inqubo yokushisela nokufaka nayo iyinkimbinkimbi kakhulu. Kwezinye izinqubo, ukuhlolwa kwe-radiographic okungonakalisi nakho kuyadingeka ekushiseleni kokuxhumeka. Lapho izinga lokushisa lidlula ama-350 °C, umthwalo wama-bolts uzoncishiswa kakhulu ngenxa yokukhululeka kokugoqa kwama-bolts, ama-gaskets nama-flanges, futhi ukuvuza kungenzeka ekuxhumekeni kwe-flange ngokucindezeleka okukhulu.
4. Ukuxhumeka kwe-clamp Isakhiwo sokuxhumeka kwe-clamp sifana ne-flange, kodwa isakhiwo saso silula futhi izindleko eziphansi zivame ukusetshenziswa kumapayipi namadivayisi ahlanzekile. Amapayipi ahlanzekile adinga ukuhlanzwa, futhi akuvunyelwe ngokuphelele ukuba nezinsalela zokukhiqiza amagciwane, ngakho-ke ukuxhumeka kwe-flange nokuxhumeka okunezintambo akufaneleki, futhi ukuxhumeka kwe-welding kunzima ukukufaka nokuyiqaqa. Ngakho-ke, ukuxhumeka kwe-clamp kuyindlela yokuxhuma evame kakhulu kumapayipi aluhlaza.
Isikhathi sokuthunyelwe: Septhemba-21-2022