Ma valve a Globe amagwiritsidwa ntchito kwambiri ndipo ali ndi mitundu yambiri. Mitundu yayikulu ndi ma valve a bellows globe, ma valve a flange globe, ma valve amkati a thread globe, ma valve a globe achitsulo chosapanga dzimbiri, ma valve a DC globe, ma valve a singano globe, ma valve a globe ooneka ngati Y, ma valve a angle globe, ndi zina zotero. mtundu wa globe valve, globe valve yosungira kutentha, cast steel globe valve, forged steel globe valve; momwe mungasankhire mtunduwo ndikofunikira kwambiri, uyenera kusankhidwa malinga ndi mawonekedwe a sing'anga, kutentha, kuthamanga ndi momwe ntchito ikuyendera. Malamulo osankha ndi awa:
1. Valavu yozungulira ya pneumatic iyenera kusankhidwa pa payipi kapena chipangizo chapakati chotentha kwambiri komanso chopanikizika kwambiri. Monga mapaipi otentha kwambiri komanso opanikizika kwambiri m'mafakitale amphamvu otentha ndi machitidwe a petrochemical;
2. Valavu yozungulira yolunjika iyenera kugwiritsidwa ntchito pa payipi pomwe zofunikira pakukana kwa convection sizokhwima;
3. Valavu ya singano, valavu ya zida, valavu yotsanzira, valavu yoyezera kuthamanga, ndi zina zotero. ingagwiritsidwe ntchito pa valavu yaying'ono ya pneumatic globe;
4. Pali kusintha kwa kayendedwe ka madzi kapena kusintha kwa kuthamanga kwa madzi, koma zofunikira pakukonza molondola sizokwera kwambiri, ndipo kukula kwa payipi ndi kochepa. Mwachitsanzo, pa payipi yokhala ndi kukula kwa ≤50mm, ndi bwino kugwiritsa ntchito valavu yoyimitsa mpweya ndi valavu yowongolera yamagetsi;
5. Kuti mukhale ndi kristalo yosavuta kuilimbitsa, sankhani valavu yozimitsa kutentha;
6. Pa malo opanikizika kwambiri, ma valve opangidwa ndi globe ayenera kusankhidwa;
7. Ma feteleza ang'onoang'ono ndi feteleza akuluakulu omwe amapangidwa m'mafakitale opanga ayenera kusankha valavu yozungulira yokhala ndi mphamvu yothamanga kwambiri kapena valavu yothamanga kwambiri yokhala ndi mphamvu yothamanga ya PN160 16MPa kapena mphamvu yothamanga ya PN320 32MPa;
8. Mu malo osungira zinthu zosungunuka ndi mapaipi omwe amatha kuphikidwa mu njira ya alumina Bayer, n'kosavuta kusankha valavu yozungulira yoyenda mwachindunji kapena valavu yoyenda mwachindunji yokhala ndi thupi la valavu yosiyana, mpando wa valavu wochotseka, ndi sealing ya carbide yolimba;
9. Mu ntchito zoperekera madzi ndi kutentha m'mapulani omanga m'mizinda, njira yodziwika bwino ndi yaying'ono, ndipo valavu yotseka mpweya, valavu yolinganiza kapena valavu yopukutira madzi imatha kusankhidwa, mwachitsanzo, njira yodziwika bwino ndi yochepera 150mm.
10. Ndi bwino kusankha valavu yolumikizira ma bellows globe yochokera kunja kwa dzikonthunzi yotentha kwambiri komanso malo owopsa komanso owopsa.
11. Pa valavu yozungulira yokhala ndi asidi, sankhani valavu yozungulira yokhala ndi chitsulo chosapanga dzimbiri kapena valavu yozungulira yokhala ndi fluorine.
Nthawi yotumizira: Epulo-29-2022
