Idayamitha yombhobho De, DN, d ф Intsingiselo
De, DN, d, ф Uluhlu lokumelwa ngokufanelekileyo lwe
De -- ububanzi bangaphandle bePPR, ipayipi ye-PE kunye nombhobho we-polypropylene
I-DN -- Umbhobho we-polyethylene (PVC), umbhobho wentsimbi, umbhobho wentsimbi yentsimbi kunye nombhobho wentsimbi.
D -- i-diameter yegama lombhobho wekhonkrithi
ф-- Idayamitha yegama lombhobho wentsimbi engenamthungo yi-ф 100:108 X 4
Umahluko phakathi kombhobho wedayimitha yeDE kunye neDN
1. I-DN ibhekiselele kwidayamitha yegama lombhobho, engeyiyo i-diameter yangaphandle okanye i-diameter yangaphakathi (kufuneka ihambelane neeyunithi zesiNgesi kwinqanaba lokuqala lophuhliso lobunjineli bombhobho, kwaye idla ngokusetyenziswa ukuchaza imibhobho yentsimbi enamazimba). Ubudlelwane bayo obuhambelanayo kunye neeyunithi zesiNgesi bumi ngolu hlobo lulandelayo:
4/8 intshi: DN15;
6/8 intshi: DN20;
Umbhobho we-intshi eyi-1: 1 intshi: DN25;
Ipayipi ye-intshi ezimbini: 1 kunye ne-1/4 intshi: DN32;
Umbhobho wesiqingatha se-intshi: 1 kunye ne-1/2 intshi: DN40;
Ipayipi ye-intshi ezimbini: i-intshi ye-2: DN50;
Umbhobho we-intshi ezintathu: I-intshi ezi-3: DN80 (iphinde imakwe njenge-DN75 kwiindawo ezininzi);
Umbhobho we-intshi ezine: 4 intshi: DN100;
2. I-De ibhekiselele kwidayamitha yangaphandle yombhobho (iphawulwe ngokubanzi nguDe, ekufuneka imakishwe ngendlela yobukhulu obungaphandle bodonga lwe-X)
Isetyenziswa kakhulu ukuchaza: imibhobho yentsimbi engenamthungo, iPVC kunye neminye imibhobho yeplastiki, kunye neminye imibhobho efuna ukutyeba okucacileyo kodonga.
Ukuthatha umbhobho wentsimbi odityaniswe ngesinyithi 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 edityanisiweyo, kwaye kunqabile ukuba sisebenzise i-De ukuphawula imibhobho ngaphandle kokubandakanya ubukhulu bodonga;
Kodwa ukuphawula imibhobho yeplastiki ngomnye umcimbi; Ikwanxulumene nemikhwa yoshishino. Kweyona nkqubo yokwakha, i-20, i-25, i-32 kunye neminye imibhobho esiyibiza ngokulula ibhekisela kwi-De, kungekhona i-DN.
Ngokutsho kwamava asebenzayo kwisiza:
a. Iindlela zokudibanisa zezinto ezimbini zombhobho azikho ngaphezu kokudibanisa intambo ye-screw kunye nokudibanisa i-flange.
b. Umbhobho wensimbi owenziwe ngesinyithi kunye nombhobho wePPR unokudibaniswa nezi ndlela zimbini zingasentla, kodwa intambo ye-screw ilungele ngakumbi imibhobho encinci kune-50, kwaye i-flange inokwethenjelwa ngakumbi kwimibhobho emikhulu kune-50.
c. Ukuba imibhobho emibini yentsimbi eyenziwe ngezinto ezahlukeneyo idityanisiwe, ingaba i-galvanic cell reaction iya kwenzeka iya kuqwalaselwa, ngaphandle koko izinga lokubola kwemibhobho yentsimbi esebenzayo liya kukhawuleziswa. Kungcono ukusebenzisa i-flanges yokudibanisa, kwaye usebenzise izinto zokugquma i-rubber gasket ukwahlula izitsimbi ezimbini, kubandakanywa iibholiti, kunye ne-gaskets ukuphepha ukudibanisa.
Umahluko phakathi kwe-DN, i-De kunye ne-Dg
DN Idayamitha yegama
De idayamitha yangaphandle
Dg idayamitha gong. I-Dg diameter gong yenziwe e-China, eneempawu zesiTshayina, kodwa ayisasetyenziswa
a. Iindlela ezahlukeneyo zokumakisha kwimibhobho eyahlukeneyo:
1. Kwimibhobho yentsimbi yokuhanjiswa kwerhasi yamanzi (igalvanized or non galvanized), imibhobho yentsimbi kunye neminye imibhobho, i-diameter yombhobho kufuneka iboniswe nge-DN ye-DN (efana ne-DN15, DN50);
2. Umbhobho wentsimbi engenamthungo, umbhobho wentsimbi odityanisiweyo (umthungo othe tye okanye umthungo ovunguzayo), umbhobho wobhedu, umbhobho wensimbi engenasici kunye neminye imibhobho, ububanzi bombhobho kufuneka bube D × ubukhulu beWall (ezifana neD108 × 4, D159 × 4.5, njl.) ;
3. Kwimibhobho yekhonkrithi eyomeleziweyo (okanye ikhonkrithi), imibhobho yodongwe, imibhobho yodongwe enganyangekiyo ngeasidi, imibhobho yeliner kunye neminye imibhobho, idiameter yombhobho kufuneka ibonakaliswe ngobubanzi bangaphakathi d (njenge-d230, d380, njl.);
4. Kwimibhobho yeplastiki, ububanzi bombhobho kufuneka bubonakaliswe ngokwemigangatho yemveliso;
5. Xa i-DN ye-diameter ebizwa ngokuba yi-DN isetyenziselwa ukumela ububanzi bombhobho kuyilo, kufuneka kubekho itafile yokuthelekisa phakathi kwe-DN ye-DN kunye neenkcukacha zemveliso ezihambelanayo.
b. Ubudlelwane be-DN, i-De kunye ne-Dg:
I-De yi-diameter yodonga lwangaphandle lombhobho
I-DN nguDe thabatha isiqingatha sobunzima bodonga lombhobho
I-Dg ayisetyenziswa ngokubanzi
1 Idayamitha yombhobho iya kuba yi-mm.
2 Inkcazo yedayamitha yombhobho iya kuhambelana nala malungiselelo alandelayo:
1 Kwimibhobho yentsimbi yokuhanjiswa kwerhasi yamanzi (igalvanized or non galvanized), imibhobho yentsimbi kunye neminye imibhobho, idiameter yepayipi kufuneka iboniswe ngedayamitha ye-DN;
2 Umbhobho wentsimbi ongenamthungo, umbhobho wentsimbi odityanisiweyo (umthungo othe tye okanye umthungo ojikelezayo), umbhobho wobhedu, umbhobho wentsimbi engatyiwayo kunye neminye imibhobho, ububanzi bombhobho kufuneka bube yidayamitha engaphandle × ubukhulu bodonga;
3 Kwimibhobho yesamente eyomeleziweyo (okanye ikhonkrithi), imibhobho yodongwe, imibhobho yodongwe ekwaziyo ukumelana neasidi, imibhobho yelitha kunye neminye imibhobho, idiameter yombhobho kufuneka ibonakaliswe ngedayamitha engaphakathi d;
4 Kwimibhobho yeplastiki, ububanzi bombhobho kufuneka bubonakaliswe ngokwemigangatho yemveliso;
5 Xa i-DN ye-DN isetyenziselwa ukumela idayamitha yombhobho kuyilo, itheyibhile yothelekiso phakathi kwedayamitha yesiqhelo ye-DN kunye neenkcukacha zemveliso ezihambelanayo ziyakunikwa.
Imibhobho ye-polyvinyl chloride engafakwanga kwiplastic yokwakha i-drainage - de (i-dimeter engaphandle yegama) yenkcazo × E (ubukhulu bodonga oluqhelekileyo) ithetha (GB 5836.1-92).
Imibhobho yePolypropylene (PP) yonikezelo lwamanzi × imele u-E (idayamitha engaphandle yegama × Ubukhulu bodonga)
Ukumakishwa kwemibhobho yeplastiki kwimizobo yobunjineli
Ubungakanani beMetric dimension
Imelwe nguDN
Ngokuqhelekileyo kuthiwa "ubungakanani obuqhelekileyo", akusiyo i-diameter yangaphandle yombhobho okanye i-diameter yangaphakathi yombhobho. Ngaba i-avareji ye-diameter yangaphandle kunye ne-diameter yangaphakathi, ebizwa ngokuba yi-avareji ye-diameter yangaphakathi.
Umzekelo, uphawu lwemetric (mm ubukhulu bobungakanani) bombhobho weplastiki kunye nedayamitha yangaphandle eyi-63mm DN50.
ISO metric ubukhulu bobungakanani
Thatha i-Da njenge-diameter yangaphandle ye-PVC umbhobho kunye nombhobho we-ABS
Thatha iDe njenge-diameter yangaphandle yombhobho wePP kunye nombhobho we-PE
Umzekelo, uphawu lwemetric lombhobho weplastiki kunye nedayamitha yangaphandle eyi-63mm (ubungakanani bobukhulu bemm)
Da63 for PVC umbhobho kunye ABS umbhobho
Ixesha lokuposa: Nov-07-2022
