Diamita na bututu De, DN, d ф Ma'ana
De,DN,d, ф Dangane da kewayon wakilci na
De -- diamita na waje na PPR, bututun PE da bututun polypropylene
DN - Nominal diamita na polyethylene (PVC) bututu, jefa baƙin ƙarfe bututu, karfe filastik hada bututu da galvanized karfe bututu
D -- ƙarancin diamita na bututun kankare
ф-- Matsakaicin diamita na bututu maras sumul shine ф 100:108 X 4
Bambanci tsakanin diamita na bututu DE da DN
1. DN yana nufin ƙananan diamita na bututu, wanda ba diamita na waje ba ko diamita na ciki (ya kamata ya kasance yana da alaƙa da raka'a na Ingilishi a farkon matakin haɓaka aikin injiniya na bututu, kuma yawanci ana amfani dashi don kwatanta bututun ƙarfe na galvanized). Daidaita dangantakarsa da sassan Ingilishi kamar haka:
4/8 inci: DN15;
6/8 inch: DN20;
1 inch bututu: 1 inch: DN25;
Bututu mai inci biyu: 1 da 1/4 inch: DN32;
Inci rabin bututu: 1 da 1/2 inch: DN40;
Bututu mai inci biyu: 2 inch: DN50;
Bututu inci uku: 3 inch: DN80 (wanda kuma aka yiwa alama DN75 a wurare da yawa);
Bututu inci hudu: 4 inch: DN100;
2. De yafi yana nufin diamita na waje na bututu (mafi yawan alamar De, wanda yakamata a yiwa alama a cikin nau'in diamita na waje X bango kauri)
Ana amfani da shi ne musamman don siffanta: bututun ƙarfe maras sumul, PVC da sauran bututun filastik, da sauran bututun da ke buƙatar kaurin bango.
Shan galvanized welded karfe bututu a matsayin misali, DN da De marking hanyoyin su ne kamar haka:
DN20 De25X2.5mm
DN25 De32X3mm
DN32 De40X4mm
DN40 De50X4mm
Ana amfani da mu don yin amfani da DN don yin alama da bututun ƙarfe na welded, kuma da wuya mu yi amfani da De don yiwa bututun alama ba tare da haɗa kauri ba;
Amma alamar bututun filastik wani lamari ne; Hakanan yana da alaƙa da halayen masana'antu. A cikin ainihin tsarin gini, 20, 25, 32 da sauran bututun da muke kira kawai suna komawa zuwa De, ba DN ba.
Dangane da ƙwarewar aiki akan rukunin yanar gizon:
a. Hanyoyin haɗi na kayan bututu guda biyu ba komai bane illa haɗin zaren dunƙule da haɗin flange.
b. Galvanized karfe bututu da PPR bututu za a iya haɗa su da sama da hanyoyi biyu, amma dunƙule thread ne mafi dace ga bututu karami fiye da 50, kuma flange ne mafi dogara ga bututu girma fiye da 50.
c. Idan an haɗa bututun ƙarfe guda biyu da aka yi da abubuwa daban-daban, ko za a yi la'akari da halayen galvanic cell, in ba haka ba za a ƙara saurin lalata bututun ƙarfe masu aiki. Yana da kyau a yi amfani da flanges don haɗin gwiwa, kuma a yi amfani da kayan rufewa na roba don raba karafa biyu, gami da kusoshi, tare da gaskets don guje wa hulɗa.
Bambanci tsakanin DN, De da Dg
Diamita mara iyaka
De diamita na waje
Dg diamita gong. Ana yin diamita na Dg a cikin Sin, tare da halayen Sinanci, amma ba a sake amfani da shi ba
a. Hanyoyi daban-daban don yin alama don bututu daban-daban:
1. Don watsa iskar gas na ruwa na bututun ƙarfe (galvanized ko non galvanized), bututun ƙarfe na ƙarfe da sauran bututu, diamita bututu ya kamata a nuna su ta hanyar diamita na DN (kamar DN15, DN50);
2. Sumul karfe bututu, welded karfe bututu (daidai kabu ko karkace kabu), jan karfe bututu, bakin karfe bututu da sauran bututu, da bututu diamita ya zama D × Wall kauri (kamar D108 × 4, D159 × 4.5, da dai sauransu). ;
3. Don ƙarfafa siminti (ko simintin) bututu, bututun yumbu, bututun yumbu mai jure acid, bututun layi da sauran bututu, diamita bututu ya kamata a bayyana ta diamita na ciki d (kamar d230, d380, da dai sauransu);
4. Don bututun filastik, ya kamata a bayyana diamita na bututu bisa ga ma'aunin samfurin;
5. Lokacin da aka yi amfani da ƙananan diamita na DN don wakiltar diamita na bututu a cikin zane, ya kamata a sami tebur kwatanta tsakanin diamita na DN da kuma samfurin samfurin daidai.
b. Dangantakar DN, De da Dg:
De shine diamita na bangon waje na bututu
DN shine De debe rabin kaurin bangon bututu
Ba a amfani da Dg gabaɗaya
1 diamita bututu zai kasance a cikin mm.
2 Bayanin diamita na bututu zai bi ka'idodi masu zuwa:
1 Don watsa iskar gas na ruwa na bututun ƙarfe (galvanized ko ba galvanized), bututun ƙarfe da sauran bututun ƙarfe, diamita bututu ya kamata a nuna su ta hanyar diamita mara kyau na DN;
2 Bakin karfe bututu, welded karfe bututu (daidai kabu ko karkace kabu), jan karfe bututu, bakin karfe bututu da sauran bututu, da bututu diamita ya zama m diamita × Wall kauri;
3 Don bututun da aka ƙarfafa (ko siminti), bututun yumbu, bututun yumbu mai jure acid, bututun layi da sauran bututu, diamita bututu ya kamata a bayyana ta diamita na ciki d;
4 Don bututun filastik, ya kamata a bayyana diamita na bututu bisa ga ma'aunin samfurin;
5 Lokacin da aka yi amfani da diamita na ƙididdiga na DN don wakiltar diamita na bututu a cikin ƙira, za a samar da tebur kwatanta tsakanin diamita mara kyau na DN da ƙayyadaddun samfurin daidai.
Bututun polyvinyl chloride wanda ba a sanya shi ba don ginin magudanar ruwa - de (diamita na waje mara kyau) don ƙayyadaddun ma'anar × E (ƙaurin bango mara ƙima) yana nufin (GB 5836.1-92).
Polypropylene (PP) bututu don samar da ruwa × E yana nufin (diamita na waje mara kyau × kauri bango)
Alamar bututun filastik akan zanen injiniya
Girman ma'auni
DN ya wakilta
Wanda aka fi sani da "girman ƙididdiga", ba diamita na waje ba ne ko diamita na ciki na bututun. Shin matsakaicin diamita na waje da diamita na ciki, wanda ake kira matsakaicin diamita na ciki.
Misali, alamar awo (girman girman mm) na bututun filastik tare da diamita na waje na 63mm DN50
Girman girman awo na ISO
Dauki Da azaman diamita na waje na bututun PVC da bututun ABS
Dauki De azaman diamita na waje na bututun PP da bututun PE
Misali, alamar awo na bututun filastik tare da diamita na waje na 63mm (girman girman mm)
Da63 don bututun PVC da bututun ABS
Lokacin aikawa: Nuwamba-07-2022
