Iyini intambo ye-NPT?
I-NPT imele i-National Pipe Taper, okuyindinganiso yase-US yemicu ecishiwe esetshenziswa emapayipini nasekufakweni kwamapayipi ngenjongo yokuvala. Imicu ye-NPT iklanyelwe ukuhlinzeka ngophawu olungavuzi lapho lusetshenziswa nesivalo sentambo, njengeteyiphu ye-Teflon noma ipayipi lepayipi. I-taper kuntambo ye-NPT iyivumela ukuthi yakhe uphawu lapho ihlanganiswa nomunye umucu ocijile.
Izici ezibalulekile zochungechunge lwe-NPT zifaka:
1. I-Taper:I-diameter yangaphandle (OD) yentambo iyancipha kancane kusukela ekuqaleni kuya ekupheleni kwentambo. Le taper, ngokuvamile eyi-intshi engu-1/16 iyintshi ngayinye, isiza ekudaleni uphawu oluqinile njengoba izingxenye ziqiniswa ndawonye.
2. I-Engeli yochungechunge: Izintambo ze-NPT zine-angle yentambo engu-60-degree, efana nezinye izindinganiso eziningi zentambo yesikulufu, kodwa umumo nesikhala kuklanyelwe ngokukhethekile ukuxhumana kwamapayipi.
3. Iphimbo: Iphimbo (inani lezintambo ngeyintshi ngayinye) liyahlukahluka kuye ngosayizi wepayipi lokuzisholo. Isibonelo, i-NPT engu-1/8-intshi inemicu engu-27 iyintshi ngayinye, kuyilapho i-NPT engu-2-intshi inemicu engu-11.5 iyintshi ngayinye.
4. Faka uphawu:Ukuqinisekisa ukuthi uphawu lufanelekile, i-thread sealant kufanele isetshenziswe. Ngaphandle kwayo, maningi amathuba okuthi kuvuze ngoba ukuthintana kwensimbi kuya kwensimbi kukodwa akudali uphawu olwanele.
5. Ukuqinisa Isandla:Imicu ye-NPT kufanele iqiniswe ngesandla kuqala, bese inikezwa ukujika okwengeziwe ngesikrufu ukuze kufinyelelwe uphawu olufanele. Isibalo sokuphenduka okungeziwe sincike kusayizi wokufaka kanye nezinto ezibonakalayo; ngokuvamile, 1.5 ukuze 3.5 baphendukela ngale umunwe tight kuyanconywa.
Izintambo ze-NPT zivame ukusetshenziswa kumapayipi, ama-hydraulics, nezinhlelo ze-pneumatic, phakathi kokunye, lapho ukuxhumeka okuvikelekile, okungenakuvuza kuyadingeka. Kukhona futhi inguqulo ye-dry-seal ebizwa ngokuthi i-NPTF (i-National Pipe Taper Fuel) eklanyelwe ukunikeza uphawu lwemishini ngaphandle kwesidingo se-sealant ehlukile, nakuba ezinye izinhlelo zokusebenza zingase zidinge i-sealant yokuphepha okungeziwe.
Ngeminye imibuzo ehlobene nokufakwa kwe-NPT noma yonke ikhathalogi yethu yomkhiqizo, sicela usithinte.