Ububanzi obuqhelekileyo kunye nobubanzi bangaphakathi nangaphandle bombhobho wentsimbi ejikelezayo

Umbhobho wentsimbi ejikelezayoluhlobo lombhobho wentsimbi owenziwe ngokuqengqa umcu wentsimbi ube yimilo yombhobho kwi-engile ethile ejikelezayo (i-engile yokwenza) uze uwudibanise. Usetyenziswa kakhulu kwiinkqubo zemibhobho yokuhambisa ioyile, igesi yendalo kunye namanzi.

Ububanzi obuqhelekileyo bububanzi obuqhelekileyo bombhobho, ixabiso eliqhelekileyo lobukhulu bombhobho. Kwimbhobho yentsimbi ejikelezayo, ububanzi obuqhelekileyo buhlala busondele, kodwa bungalingani, nobubanzi bangaphakathi okanye bangaphandle bokwenyani.

Idla ngokubonakaliswa yi-DN kunye nenani, elifana ne-DN200, elibonisa umbhobho wentsimbi onobubanzi obuqhelekileyo be-200 mm.

Uluhlu oluqhelekileyo lwe-nominal diameter (DN):
1. Uluhlu oluncinci lobubanzi (DN100 - DN300):
DN100 (4 intshi)
DN150 (ii-intshi ezi-6)
I-DN200 (ii-intshi ezi-8)
DN250 (10 intshi)
I-DN300 (ii-intshi ezili-12)

2. Uluhlu oluphakathi lobubanzi (DN350 - DN700):
I-DN350 (ii-intshi ezili-14)
I-DN400 (ii-intshi ezili-16)
I-DN450 (ii-intshi ezili-18)
DN500 (20 intshi)
I-DN600 (ii-intshi ezingama-24)
DN700 (28 intshi)

3. Uluhlu olukhulu lobubanzi (DN750 - DN1200)
DN750 (30 intshi)
DN800 (32 intshi)
DN900 (36 intshi)
DN1000 (40 intshi)
DN1100 (44 intshi)
DN1200 (48 intshi)

4. Uluhlu olukhulu kakhulu lobubanzi (DN1300 nangaphezulu)
DN1300 (52 intshi)
I-DN1400 (ii-intshi ezingama-56)
DN1500 (ii-intshi ezingama-60)
I-DN1600 (ii-intshi ezingama-64)
DN1800 (72 intshi)
I-DN2000 (ii-intshi ezingama-80)
I-DN2200 (ii-intshi ezingama-88)
I-DN2400 (ii-intshi ezingama-96)
I-DN2600 (104 intshi)
I-DN2800 (112 intshi)
I-DN3000 (ii-intshi ezili-120)

Ububanzi bangaphandle (OD): I-OD bububanzi bomphezulu wangaphandle wombhobho wentsimbi ojikelezayo. I-OD yombhobho wentsimbi ojikelezayo bubungakanani bokwenyani bomphandle wombhobho. I-OD ingafunyanwa ngokulinganisa kwangempela, ngesiqhelo kwiimilimitha (mm).
Ububanzi bangaphakathi (ID): I-ID bububanzi bomphezulu wangaphakathi wombhobho wentsimbi ojikelezayo. I-ID bubungakanani bokwenyani bangaphakathi wombhobho. I-ID idla ngokubalwa ngokuthabatha kabini ubukhulu bodonga kwi-OD ngeemilimitha (mm) I-ID = OD-2 x Ubukhulu bodonga

Intsimi yesicelo

Imibhobho yentsimbi ejikelezayo eneedayamitha ezahlukeneyo inezicelo ezahlukeneyo kwiindawo ezahlukeneyo:
1. ububanzi obuncinciUmbhobho weNsimbi yeSsaw(DN100 - DN300): isetyenziswa kakhulu kubunjineli bukamasipala kwimibhobho yokuhambisa amanzi, imibhobho yokukhupha amanzi, imibhobho yegesi, njl.njl.
2. ububanzi obuphakathiUmbhobho we-Ssaw(DN350 - DN700): isetyenziswa kakhulu kwimibhobho yeoyile, igesi yendalo kunye nombhobho wamanzi wezemizi-mveliso. 3. umbhobho wentsimbi ejikelezayo enobubanzi obukhulu (DN100 - DN300): isetyenziswa kakhulu kwimibhobho yokuhambisa amanzi yobunjineli bukamasipala, umbhobho wokukhupha amanzi, umbhobho wegesi, njl.njl.
3.Umbhobho we-Ssaw obubanzi obukhulu(DN750 - DN1200): isetyenziswa kwiiprojekthi zokuhambisa amanzi ezikude, imibhobho yeoyile, iiprojekthi zoshishino ezinkulu, ezifana nothutho oluphakathi.
4. ububanzi obukhulu kakhuluUmbhobho weNtsimbi yeCarbon yeSsaw(DN1300 nangaphezulu): isetyenziswa kakhulu kwiiprojekthi zemibhobho yamanzi, ioyile negesi ezinqumla umgama omde, imibhobho yamanzi angaphantsi komhlaba kunye nezinye iiprojekthi zeziseko zophuhliso ezinkulu.

Ububanzi obuqhelekileyo kunye nezinye iinkcukacha zombhobho wentsimbi ejikelezayo zihlala ziveliswa ngokuhambelana nemigangatho kunye neenkcukacha ezifanelekileyo:
1. imigangatho yamazwe ngamazwe: I-API 5L: isebenza kumbhobho wentsimbi yokuthutha imibhobho, ichaza ubungakanani kunye neemfuno zezinto ezibonakalayo zombhobho wentsimbi ejikelezayo i-ASTM A252: isebenza kumbhobho wentsimbi wolwakhiwo, ichaza ubungakanani kunye neemfuno zokwenziwa kombhobho wentsimbi ejikelezayo.
2. umgangatho wesizwe: GB/T 9711: isebenza kumbhobho wentsimbi ekuthuthweni kweshishini leoyile negesi, ichaza iimfuno zobugcisa zombhobho wentsimbi ojikelezayo. gb/t 3091: isebenza kumbhobho wentsimbi odibeneyo ekuthuthweni kolwelo oluphantsi koxinzelelo, ichaza ubukhulu kunye neemfuno zobugcisa zombhobho wentsimbi ojikelezayo.