Idayamitha yombhobho De, DN, d ф Intsingiselo
De、DN、d、ф Uluhlu oluhambelanayo lomelo
Ububanzi obungaphandle be-De -- bombhobho we-PPR, i-PE kunye nombhobho we-polypropylene
DN -- Ububanzi obuqhelekileyo bombhobho we-polyethylene (PVC), umbhobho wesinyithi esityhidiweyo, umbhobho weplastiki edibeneyo yentsimbi kunye nombhobho wesinyithi ogqunyiweyo
D -- ububanzi obuqhelekileyo bombhobho wekhonkrithi
ф-- Ububanzi obuqhelekileyo bombhobho wentsimbi engenamthungo yi-ф 100:108 X 4
Umahluko phakathi kobubanzi bombhobho i-DE kunye ne-DN
1. I-DN ibhekisa kububanzi obuqhelekileyo bombhobho, obungengobubanzi bangaphandle okanye ububanzi bangaphakathi (kufuneka buhambelane neeyunithi zaseNgilani kwinqanaba lokuqala lophuhliso lobunjineli bombhobho, kwaye idla ngokusetyenziselwa ukuchaza imibhobho yentsimbi egalelweyo). Ulwalamano lwayo oluhambelanayo neeyunithi zaseNgilani lulandelayo:
4/8 intshi: DN15;
6/8 intshi: DN20;
Umbhobho we-intshi e-1: 1 intshi: DN25;
Umbhobho weesentimitha ezimbini: 1 kunye ne 1/4 intshi: DN32;
I-intshi yesiqingatha sombhobho: 1 kunye ne-1/2 intshi: DN40;
Umbhobho weesentimitha ezimbini: iisentimitha ezimbini: DN50;
Umbhobho we-intshi ezintathu: 3 intshi: DN80 (ikwaphawulwe njengeDN75 kwiindawo ezininzi);
Umbhobho we-intshi ezine: 4 intshi: DN100;
2. I-De ibhekisa ikakhulu kububanzi bangaphandle bombhobho (ngokubanzi iphawulwe yi-De, ekufuneka iphawulwe ngohlobo lobubanzi bangaphandle bodonga lwe-X)
Isetyenziswa kakhulu ukuchaza: imibhobho yentsimbi engenamthungo, i-PVC kunye neminye imibhobho yeplastiki, kunye neminye imibhobho efuna ubukhulu bodonga obucacileyo.
Xa sithatha umbhobho wentsimbi odibeneyo owenziwe nge-galvanized njengomzekelo, iindlela zokumakisha ze-DN kunye ne-De zezi zilandelayo:
DN20 De25X2.5mm
DN25 De32X3mm
DN32 De40X4mm
DN40 De50X4mm
Siqhele ukusebenzisa i-DN ukuphawula imibhobho yentsimbi edibeneyo, kwaye asisebenzisi rhoqo i-De ukuphawula imibhobho ngaphandle kokubandakanya ubukhulu bodonga;
Kodwa ukupeyinta imibhobho yeplastiki yinto eyahlukileyo; Ikwanxulumene nemikhwa yoshishino. Kwinkqubo yokwakha yokwenyani, imibhobho engama-20, engama-25, engama-32 kunye neminye esiyibiza ngokuba yi-De, hayi i-DN.
Ngokweengxelo ezifumanekayo kwindawo:
a. Iindlela zoqhagamshelo lwezixhobo ezimbini zepayipi azikho nto ngaphandle koqhagamshelo lwentambo yesikrufu kunye noqhagamshelo lweflange.
b. Umbhobho wentsimbi egalelweyo kunye nombhobho we-PPR unokudityaniswa ngezi ndlela zimbini zingasentla, kodwa umsonto weskruwu ulungele ngakumbi imibhobho engaphantsi kwama-50, kwaye iflange ithembeke ngakumbi kwimibhobho emikhulu kune-50.
c. Ukuba imibhobho emibini yesinyithi eyenziwe ngezinto ezahlukeneyo iqhagamshelwe, kuya kuqwalaselwa ukuba kuya kwenzeka na ukusabela kweseli ye-galvanic, kungenjalo izinga lokugqwala kwemibhobho yesinyithi esebenzayo liya kukhawuleziswa. Kungcono ukusebenzisa iiflanges ukuqhagamshela, kwaye usebenzise izixhobo zokugquma irabha gasket ukwahlula iintsimbi ezimbini, kuquka iibholiti, kunye neegaskets ukuze kuthintelwe ukudibana.
Umahluko phakathi kwe-DN, i-De kunye ne-Dg
Ububanzi begama le-DN
Ububanzi bangaphandle
Igong enobubanzi be-Dg. Igong enobubanzi be-Dg yenziwe eTshayina, ineempawu zaseTshayina, kodwa ayisasetyenziswa.
a. Iindlela ezahlukeneyo zokumakisha kwiipayipi ezahlukeneyo:
1. Kwimibhobho yentsimbi yokuhambisa igesi emanzini (eyenziwe nge-galvanized okanye engagalelwanga), imibhobho yesinyithi ephosiweyo kunye neminye imibhobho, ububanzi bombhobho kufuneka buboniswe ngobubanzi obuqhelekileyo be-DN (njenge-DN15, DN50);
2. Umbhobho wentsimbi ongenamthungo, umbhobho wentsimbi odibeneyo (umthungo othe tye okanye umthungo ojikelezayo), umbhobho wobhedu, umbhobho wentsimbi engatyiwayo kunye neminye imibhobho, ububanzi bombhobho kufuneka bube yi-D × Ubukhulu bodonga (obufana ne-D108 × 4、D159 × 4.5, njl.njl.);
3. Kwimibhobho yekhonkrithi eqinisiweyo (okanye ikhonkrithi), imibhobho yodongwe, imibhobho yeseramikhi enganyangekiyo yi-asidi, imibhobho yelayini kunye neminye imibhobho, ububanzi bombhobho kufuneka bubonakaliswe bububanzi bangaphakathi buka-d (obufana no-d230, d380, njl.njl.);
4. Kwimibhobho yeplastiki, ububanzi bombhobho kufuneka bubonakaliswe ngokwemigangatho yemveliso;
5. Xa i-DN enobubanzi obuqhelekileyo isetyenziswa ukumela ububanzi bombhobho kuyilo, kufuneka kubekho itheyibhile yokuthelekisa phakathi kwe-DN enobubanzi obuqhelekileyo kunye neenkcukacha zemveliso ezihambelanayo.
b. Ulwalamano lwe-DN, i-De kunye ne-Dg:
UDe bububanzi bodonga lwangaphandle lombhobho
I-DN yi-De minus isiqingatha sobukhulu bodonga lombhobho
I-Dg ayisetyenziswa ngokubanzi
1 Ububanzi bombhobho bube yi-mm.
2 Ukubonakaliswa kobubanzi bombhobho kufuneka kuhambelane nemigaqo elandelayo:
1 Kwimibhobho yentsimbi yokuhambisa igesi yamanzi (eyenziwe nge-galvanized okanye engagalelwanga), imibhobho yesinyithi ephosiweyo kunye neminye imibhobho, ububanzi bombhobho kufuneka buboniswe ngobubanzi obuqhelekileyo be-DN;
2 Umbhobho wentsimbi engenamthungo, umbhobho wentsimbi edibeneyo (umthungo othe tye okanye umthungo ojikelezayo), umbhobho wobhedu, umbhobho wentsimbi engatyiwayo kunye neminye imibhobho, ububanzi bombhobho kufuneka bube bububanzi obungaphandle × Ubukhulu bodonga;
3 Kwimibhobho yekhonkrithi eqinisiweyo (okanye ikhonkrithi), imibhobho yodongwe, imibhobho yeseramikhi enganyangekiyo yi-asidi, imibhobho yelayini kunye neminye imibhobho, ububanzi bombhobho kufuneka bubonakaliswe bububanzi bangaphakathi d;
4 Kwimibhobho yeplastiki, ububanzi bombhobho kufuneka bubonakaliswe ngokwemigangatho yemveliso;
5 Xa i-DN enobubanzi obuqhelekileyo isetyenziselwa ukumela i-pipe diameter kuyilo, kuya kufuneka kubonelelwe ngetheyibhile yokuthelekisa phakathi kwe-DN enobubanzi obuqhelekileyo kunye neenkcukacha zemveliso ezifanelekileyo.
Imibhobho ye-polyvinyl chloride engafakwanga iplastiki yokwakha amanzi okuhambisa amanzi - de (ububanzi obuqhelekileyo bangaphandle) ngokweenkcukacha × E (ubukhulu bodonga obuqhelekileyo) ithetha (GB 5836.1-92).
Imibhobho yePolypropylene (PP) yokuhambisa amanzi × E imele (ububanzi obuqhelekileyo bangaphandle × Ubukhulu bodonga)
Ukuphawulwa kwemibhobho yeplastiki kwimizobo yobunjineli
Ubungakanani bemilinganiselo yemetrikhi
Imelwe yi-DN
Okubizwa ngokuba "ngubukhulu obuqhelekileyo", asikuko ububanzi bangaphandle bombhobho okanye ububanzi bangaphakathi bombhobho. Ngumndilili wobubanzi bangaphandle kunye nobubanzi bangaphakathi, obubizwa ngokuba bububanzi obuphakathi bomndilili.
Umzekelo, uphawu lwemetrikhi (ubukhulu bemilimitha) yombhobho weplastiki onobubanzi obungaphandle obuyi-63mm DN50
Ubungakanani bemilinganiselo ye-ISO
Thatha i-Da njengobubanzi bangaphandle bombhobho we-PVC kunye nombhobho we-ABS
Thatha i-De njengobubanzi bangaphandle bombhobho we-PP kunye nombhobho we-PE
Umzekelo, uphawu lwemetrikhi yombhobho weplastiki onobubanzi obungaphandle obuyi-63mm (ubukhulu be-mm)
I-Da63 yombhobho we-PVC kunye nombhobho we-ABS
Ixesha lokuthumela: Novemba-07-2022
