Valve anawaena Φ, anawaena DN, iniha” Hiki iā ʻoe ke hoʻokaʻawale i kēia mau ʻāpana kikoʻī?

Nui nā hoaaloha i maopopo ʻole i ka pilina ma waena o nā kikoʻī o "DN", "Φ” a me “””. I kēia lā, e hōʻuluʻulu au i ka pilina ma waena o nā mea ʻekolu no ʻoe, me ka manaʻolana e kōkua iā ʻoe!

he aha ka ʻīniha”

ʻO ka ʻīniha (“) he ʻāpana kikoʻī maʻamau i hoʻohana ʻia ma ka ʻōnaehana ʻAmelika, e like me nā paipu kila,kiwikā, flanges, elbows, pumps, tees, etc., e like me ka kikoʻī he 10″.

ʻO ka ʻīniha (inihi, hoʻopau ʻia e like me ka in.) ʻo ia ka manamana lima ma ka ʻōlelo Dutch, a ʻo ka ʻīniha ka lōʻihi o ka manamana lima.ʻOiaʻiʻo, ʻokoʻa ka lōʻihi o ka manamana lima.I ke kenekulia 14, ua hoʻolaha ʻo King Edward II i ka "Standard Legal Inch".ʻO ka ʻōlelo ʻana, ʻo ka lōʻihi o nā hua nui ʻekolu i koho ʻia mai ka waena o nā hua bale a hoʻonohonoho ʻia i ka lālani he hoʻokahi ʻīniha.

ʻO ka maʻamau 1″=2.54cm=25.4mm

He aha ka DN

ʻO DN kahi ʻāpana kikoʻī maʻamau i hoʻohana ʻia ma Kina a me nā ʻōnaehana ʻEulopa, a ʻo ia hoʻi ka kikoʻī no ka hōʻailona ʻana i nā paipu,kiwikā, flanges, mea pono, a me nā pumps, e like meDN250.

ʻO ka DN e pili ana i ke anawaena inoa o ka paipu (i ʻike ʻia ʻo ka nominal diameter), e hoʻomaopopo: ʻaʻole kēia ke anawaena o waho a i ʻole ka anawaena o loko, akā ʻo ka awelika o ke anawaena o waho a me ke anawaena o loko, i kapa ʻia ʻo ka awelika o loko.

He ahaΦ

Φ He hui maʻamau, e pili ana i ke anawaena o waho o nā paipu, a i ʻole nā ​​kuʻekuʻe, ke kila poepoe a me nā mea ʻē aʻe.

No laila he aha ka pilina ma waena o lākou?

ʻO ka mea mua, ʻaneʻane like nā manaʻo i kaha ʻia e """ a me "DN".Φ ʻo ia ka hui ʻana o nā mea ʻelua.

ʻo kahi laʻana

No ka laʻana, inā he DN600 ka paipu kila, inā ua kaha ʻia ka paipu kila like i nā iniha, lilo ia i 24″.Aia kekahi pilina ma waena o lāua?

ʻAe ka pane!ʻO ka ʻīniha maʻamau he integer a hoʻonui pololei ʻia e 25 like DN, e like me 1″*25=DN25, 2″*25=50, 4″*25=DN100, etc. ʻOiaʻiʻo, aia nā mea like ʻole e like me 3″ *25=75 ʻO DN80 ka pōʻai, a aia kekahi mau ʻīniha me nā semicolons a i ʻole nā ​​helu decimal e like me 1/2″, 3/4″, 1-1/4″, 1-1/2″, 2-1/2″ , 3-1/2″ a pēlā aku, ʻaʻole hiki ke helu ʻia kēia mau mea e like me ia, akā ʻano like ka helu ʻana, ʻo ka waiwai i kuhikuhi ʻia:

1/2″=DN15

3/4″=DN20

1-1/4″=DN32

1-1/2″=DN40

2″=DN50

2-1/2″=DN65

3″=DN80