Umbhobho ojikelezayo, ekwaziwa ngokuba ngumbhobho wentsimbi ojikelezayo okanye umbhobho odityanisiweyo wentsimbi, yintsimbi yolwakhiwo lwekhabhoni ephantsi okanye ingxubevange yentsimbi ephantsi eqengqeleke kwityhubhu engenanto kwi-engile ethile ye-helical (ebizwa ngokuba yi-engile yokubumba), eyaziwa ngokuba yityhubhu ejikelezayo. umzimba ojikelezayo.Idayamitha engaphandle yombhobho ojikelezayo imalunga neenanometer ezingama-30, idiameter yangaphakathi imalunga neenanometer ezili-10, yaye inowuthi phakathi kwemijiko emeleneyo imalunga neenanometer ezili-11.

Zeziphi iindlela zokuchonga ukuba umgangatho wemibhobho edityanisiweyo ye-spiral-diameter enkulu ikumgangatho ophezulu?

1. Ukuhlolwa ngendlela ebonakalayo: indlela yokuhlola umzimba yindlela yokulinganisa okanye yokuhlola ngokusebenzisa izinto ezithile ezibonakalayo.

2. Uvavanyo lwamandla omkhumbi wexinzelelo: Ukongeza kuvavanyo lokuqina, isitya soxinzelelo kufuneka siphinde sivavanye amandla.Ngokuqhelekileyo kukho iindidi ezimbini zovavanyo lwe-hydrostatic kunye novavanyo loxinzelelo lomoya.Bobabini bahlola ukuxinana kwee-welds kwiinqanawa kunye nemibhobho esebenza phantsi koxinzelelo.Uvavanyo loxinzelelo lomoya lunovakalelo kwaye lukhawuleza kunovavanyo lwehydraulic.Kwangaxeshanye, umbhobho odityanisiweyo we-diameter spiral welded emva kovavanyo awufuni ukugalelwa, ofaneleke ngakumbi kwiimveliso ezinobunzima bokuhambisa amanzi.Nangona kunjalo, umngcipheko wovavanyo mkhulu kunovavanyo lwe-hydrostatic.Ngexesha lovavanyo, amanyathelo obugcisa okhuseleko ahambelanayo kufuneka alandelwe ukukhusela iingozi ngexesha lovavanyo.
3. Uvavanyo lwe-Hydrostatic: Umbhobho ngamnye owenziwe nge-spiral we-diameter enkulu kufuneka ube phantsi kovavanyo loxinzelelo lwe-hydrostatic ngaphandle kokuvuza.Uxinzelelo lovavanyo lubalwa ngolu hlobo lulandelayo: P = 2ST / D.
Kwifomula, i-S-uxinzelelo lovavanyo lwe-Mpa yovavanyo lwe-hydrostatic, kunye noxinzelelo lovavanyo lovavanyo lwe-hydrostatic lukhethwa ngokwe-60% yexabiso lesivuno elichazwe kumgangatho ohambelana nentsimbi yentsimbi.

4. Ukugweba ukusuka kumphezulu, oko kukuthi, ukuhlolwa kwembonakalo, yindlela yokuhlola elula kwaye esetyenziswa ngokubanzi.Iyinxalenye ebalulekileyo yokuhlolwa kwemveliso egqityiweyo.Ikakhulu kukufumana iziphene kumphezulu we-weld kunye nokunxaxha kwe-dimensional.Ngokuqhelekileyo, ihlolwe ngamehlo anqunu, ngoncedo lweetemplates eziqhelekileyo, i-gauges, iiglasi zokukhulisa kunye nezinye izixhobo.Ukuba kukho isiphene kumphezulu we-weld, kunokwenzeka ukuba kukho isiphene ngaphakathi kwe-weld.