Yintoni umsonto weNPT?
I-NPT imele i-National Pipe Taper, esemgangathweni wase-US kwimisonto ekhutshiweyo esetyenziswa kwimibhobho kunye nofakelo lwemibhobho ngenjongo yokutywinwa. Imisonto ye-NPT yenzelwe ukubonelela ngokutywinwa okungavuziyo xa isetyenziswa ngesitywina somsonto, njengeteyiphu yeTeflon okanye idope yombhobho. I-taper kumsonto we-NPT ivumela ukuba yenze itywina xa idityaniswe nomnye umsonto ocekethekileyo.
Iimpawu eziphambili zemisonto ye-NPT ziquka:
1. Taper:I-diameter yangaphandle (OD) yentambo iyancipha kancinci ukusuka ekuqaleni ukuya ekupheleni komsonto. Le taper, ngokuqhelekileyo i-1/16 intshi nge-intshi nganye, inceda ekudaleni itywina eliqinileyo njengoko iindawo ziqiniswa kunye.
2. Iengile yomsonto: Iintambo ze-NPT zine-angle ye-60-degree thread, efana nemigangatho emininzi ye-screw thread, kodwa imilo kunye nezithuba zenzelwe ngokukodwa ukudibanisa kombhobho.
3. I-pitch: I-pitch (inani leentambo nge-intshi nganye) iyahluka ngokuxhomekeke kubungakanani bombhobho oqhelekileyo. Ngokomzekelo, i-1/8-intshi ye-NPT ineentambo ze-27 nge-intshi nganye, ngelixa i-2-intshi ye-NPT inemicu ye-11.5 nge-intshi nganye.
4. Isitywina:Ukuqinisekisa isitywina esifanelekileyo, i-thread sealant kufuneka isetyenziswe. Ngaphandle kwayo, kukho amathuba aphezulu okuvuza ngenxa yokuba intsimbi ukuya kwintsimbi yokudibanisa iyodwa ayenzi itywina elaneleyo.
5. UkuQiniswa kwesandla:Imisonto ye-NPT kufuneka iqiniswe ngesandla kuqala, emva koko inikwe ujiko olongezelelweyo ngesitshixo ukufezekisa itywina elililo. Inani leenguqu ezongezelelweyo lixhomekeke kubukhulu bokulungelelanisa kunye nezinto eziphathekayo; ngokubanzi, 1.5 ukuba 3.5 ujike ngaphaya umnwe tight kuyacetyiswa.
Imicu ye-NPT isetyenziswa ngokuqhelekileyo kwimibhobho yamanzi, i-hydraulics, kunye neenkqubo ze-pneumatic, phakathi kwezinye, apho kufuneka udibaniso olukhuselekileyo, olungenabungqina bokuvuza. Kukho kwakhona inguqu eyomileyo ebizwa ngokuba yi-NPTF (i-National Pipe Taper Fuel) eyenzelwe ukubonelela ngesitywina somatshini ngaphandle kwesidingo se-sealant eyahlukileyo, nangona ezinye izicelo zisenokufuna i-sealant yokhuseleko olongezelelweyo.
Kuyo nayiphi na eminye imibuzo enxulumene nokufakwa kwe-NPT okanye yonke ikhathalogu yethu yemveliso, nceda uqhagamshelane nathi.