Te diameter paipa De, DN, d ф Tikanga
De,DN,d, ф Te whānuitanga o te tohu o
Te whānui o waho o te paipa PPR, PE me te paipa polypropylene
DN -- Te whānui ingoa o te paipa polyethylene (PVC), te paipa rino maka, te paipa maitai kirihou hiato me te paipa maitai piauau
D -- te whānui ingoa o te paipa raima
ф-- Ko te diameter ingoa o te paipa maitai kore hononga he ф 100:108 X 4
Te rerekētanga i waenga i te diameter o te paipa DE me te DN
1. Ko te DN e pā ana ki te diameter ingoa o te paipa, ehara i te diameter o waho, ehara hoki i te diameter o roto (me hono atu ki ngā waeine Ingarihi i te tīmatanga o te whanaketanga hangarau paipa, ā, e whakamahia ana hei whakaahua i ngā paipa maitai kua whakapūmautia). Ko tōna whanaungatanga e rite ana ki ngā waeine Ingarihi koia tēnei:
4/8 inihi: DN15;
6/8 inihi: DN20;
Paipa 1 inihi1 inihi: DN25;
Paipa e rua inihi: 1 me te 1/4 inihi: DN32;
Paipa haurua inihi: 1 me te 1/2 inihi: DN40;
Paipa e rua inihi: 2 inihi: DN50;
Paipa e toru inihi3 inihi: DN80 (kua tohua hoki ko DN75 i ngā wāhi maha);
Paipa e whā inihi4 inihi: DN100;
2. Ko te De e pā ana ki te diameter o waho o te paipa (e tohuhia ana e De, me tohu i te ahua o te diameter o waho X te matotoru o te pakitara)
Ko te nuinga o te whakamahinga hei whakaahua i: ngā paipa rino tui kore, te PVC me ētahi atu paipa kirihou, me ētahi atu paipa e hiahia ana kia mārama te matotoru o te pakitara.
Hei tauira, ko ngā tikanga tohu DN me De:
DN20 De25X2.5mm
DN25 De32X3mm
DN32 De40X4mm
DN40 De50X4mm
Kua taunga mātou ki te whakamahi i te DN hei tohu i ngā paipa rino kua whakarewaina, ā, he onge te whakamahi i te De hei tohu i ngā paipa me te kore e uru te matotoru o te pakitara;
Engari he mea anō te tohu i ngā paipa kirihou; e pā ana hoki ki ngā tikanga o te umanga. I roto i te tukanga hanga tuturu, ko ngā paipa 20, 25, 32 me ētahi atu e kīia nei e tātou he De anake, ehara i te DN.
E ai ki ngā wheako mahi i te papaanga:
a. Ko ngā tikanga hononga o ngā rauemi paipa e rua he hononga miro tīwiri me te hononga flange anake.
b. Ka taea te hono i ngā paipa rino piauau me ngā paipa PPR mā ngā tikanga e rua o runga ake nei, engari he pai ake te miro tīwiri mō ngā paipa iti iho i te 50, ā, he pono ake te flange mō ngā paipa nui atu i te 50.
c. Mena ka honoa ngā paipa whakarewa e rua i hangaia mai i ngā rauemi rerekē, me whai whakaaro mēnā ka puta he tauhohenga pūtau galvanic, ki te kore ka tere ake te tere o te waikura o ngā paipa whakarewa hohe. He pai ake te whakamahi i ngā flanges hei hononga, me te whakamahi i ngā rauemi whakamahana rapa hei wehe i ngā whakarewa e rua, tae atu ki ngā pūtu, me ngā gaskets hei karo i te pa atu.
Te rerekētanga i waenga i te DN, De me te Dg
DN Diameter ingoa
Te diameter o waho
Ko te konga diameter Dg. He mea hanga te konga diameter Dg ki Haina, he āhuatanga Hainamana, engari kāore e whakamahia ana i ēnei rā.
a. Ngā tikanga tohu rerekē mō ngā paipa rerekē:
1. Mō ngā paipa maitai tuku hau wai (pire, kore-pire rānei), ngā paipa rino maka me ētahi atu paipa, me tohu te diameter o te paipa mā te diameter ingoa DN (pērā i te DN15, DN50);
2. Mō ngā paipa maitai kore-tuitui, ngā paipa maitai whakarewa (tuitui tika, tuitui porowhita rānei), ngā paipa parahi, ngā paipa maitai kore-waikura me ētahi atu paipa, ko te diameter o te paipa kia rite ki te D × te matotoru o te pakitara (pērā i te D108 × 4, D159 × 4.5, me ētahi atu);
3. Mō ngā paipa raima whakakaha (raima rānei), ngā paipa uku, ngā paipa uku ātete waikawa, ngā paipa raina me ētahi atu paipa, me whakaatu te whānui o te paipa mā te whānui o roto d (pēnei i te d230, d380, me ētahi atu);
4. Mō ngā paipa kirihou, me whakaatu te whānui o te paipa kia rite ki te paerewa hua;
5. Ina whakamahia te diameter ingoa DN hei tohu i te diameter o te paipa i roto i te hoahoa, me whakarite he ripanga whakatairite i waenga i te diameter ingoa DN me ngā whakatakotoranga hua e rite ana.
b. Te whanaungatanga o DN, De me Dg:
Ko De te diameter o te pakitara o waho o te paipa
Ko te DN ko De tangohia te haurua o te matotoru o te pakitara paipa
Kāore te Dg e whakamahia whānuitia ana
1 Me whakamahi te diameter o te paipa i roto i te mm.
2 Me tutuki te whakapuakanga o te diameter o te paipa ki ngā whakaritenga e whai ake nei:
1 Mō ngā paipa maitai tuku hau wai (piauau, kore-piauau rānei), ngā paipa rino maka me ētahi atu paipa, me tohu te diameter o te paipa mā te diameter ingoa DN;
2 Paipa maitai kore hononga, paipa maitai whakarewa (tuitui tika, tuitui porowhita rānei), paipa parahi, paipa maitai kore waikura me ētahi atu paipa, ko te diameter o te paipa me rite ki te diameter o waho × te matotoru o te pakitara;
3 Mō ngā paipa raima whakakaha (raima rānei), ngā paipa uku, ngā paipa uku ātete waikawa, ngā paipa raina me ētahi atu paipa, me whakaatu te whānui o te paipa mā te whānui o roto d;
4 Mō ngā paipa kirihou, me whakaatu te whānui o te paipa kia rite ki te paerewa hua;
5 Ina whakamahia te diameter ingoa DN hei tohu i te diameter paipa i roto i te hoahoa, me whakarato he ripanga whakatairite i waenga i te diameter ingoa DN me ngā whakatakotoranga hua e rite ana.
Ngā paipa polyvinyl chloride kāore i te kirihou mō te waikeri o te whare - de (diameter waho ingoa) mō te whakatakotoranga × E (matotoru pakitara ingoa) tikanga (GB 5836.1-92).
Ngā paipa polypropylene (PP) mō te tuku wai × Ko te E te tikanga mō (te whānui o waho ingoa × te matotoru o te pakitara)
Te tohu i ngā paipa kirihou i runga i ngā tuhi hangarau
Rahi ine ine
I tohuhia e DN
E mōhiotia whānuitia ana ko te "rahi ingoa", ehara i te whānui o waho o te paipa, ehara hoki i te whānui o roto o te paipa. Ko te toharite o te whānui o waho me te whānui o roto, e kiia nei ko te whānui toharite o roto.
Hei tauira, ko te tohu ine (rahi ine mm) o te paipa kirihou me te diameter o waho o te 63mm DN50
Rahi ine ine ISO
Tangohia a Da hei diameter o waho o ngā paipa PVC me ngā paipa ABS
Tangohia a De hei diameter o waho o te paipa PP me te paipa PE
Hei tauira, ko te tohu ine o te paipa kirihou me te diameter o waho o te 63mm (rahi ine mm)
Da63 mō ngā paipa PVC me ngā paipa ABS
Wā tuku: Whiringa-ā-rangi-07-2022
