Wehewehe a me na kikoo o ka paipu
He aha ka Paipu?
ʻO ka paipu he paipu puka me ka pauku kea poepoe no ka lawe ʻana i nā huahana. ʻO nā huahana nā wai, gas, pellets, pauka a me nā mea hou aku. Hoʻohana ʻia ka huaʻōlelo paipu e like me ka ʻokoʻa mai ka paipu e pili i nā huahana tubular o nā ana i hoʻohana mau ʻia no ka pipeline a me nā ʻōnaehana paipu. Ma kēia pūnaewele, nā paipu e like me nā koi nui o:ASME B36.10Paipu kila wiliwili ʻole ʻia a meASME B36.19Kūkākūkā ʻia ka paipu kila kila.
Paipu a Paipu paha?
I ka honua o ka paipu, e hoʻohana ʻia nā huaʻōlelo paipu a me ka paipu. Hoʻomaopopo mau ʻia ka paipu e ka "Nominal Pipe Size" (NPS), me ka mānoanoa o ka paia i wehewehe ʻia e ka "Schedule Number" (SCH).
Hōʻike maʻamau ʻia ka pahu e kona anawaena waho (OD) a me ka mānoanoa o ka pā (WT), i hōʻike ʻia ma Birmingham wire gage (BWG) a i ʻole ma ka hapahā o ka ʻīniha.
Pipe: NPS 1/2-SCH 40 a hiki i waho ke anawaena 21,3 mm me ka mānoanoa pā o 2,77 mm.
Tube: 1/2″ x 1,5 a hiki i waho ke anawaena 12,7 mm me ka mānoanoa pā o 1,5 mm.
ʻO ka hoʻohana nui ʻana i ka paipu ma nā Heat Exchangers, nā laina mea kani a me nā pilina liʻiliʻi ma nā mea hana e like me nā compressors, boilers etc.
Na lako no ka paipu
Loaʻa i nā hui ʻenekinia nā mea ʻenehana e hoʻoholo i nā mea e hoʻohana ʻia i nā ʻōnaehana paipu. ʻO ka hapa nui o ka paipu he kila kalapona (ma muli o ka lawelawe) i hana ʻia i nā kūlana ASTM like ʻole.
ʻO ka paipu carbon-steel he ikaika, ductile, weldable, machinable, kūpono, lōʻihi a ʻoi aku ka maikaʻi ma mua o ka paipu i hana ʻia mai nā mea ʻē aʻe. Inā hiki i ka paipu carbon-steel ke hoʻokō i nā koi o ke kaomi, ka mahana, ka pale ʻana i ka corrosion a me ka maʻemaʻe, ʻo ia ke koho kūlohelohe.
Hana ʻia ka paipu hao mai ka hao hao a me ka hao ductile. ʻO nā mea nui e hoʻohana ai no nā laina wai, kinoea a me nā laina wai.
Hiki ke hoʻohana ʻia ka paipu plastik no ka lawe ʻana i nā wai ʻino, a he mea maikaʻi loa ia no ka lawelawe ʻana i nā kinoea ʻino a ʻino paha a me ka hoʻoheheʻe ʻana i nā ʻakika mineral.
Hiki ke loaʻa maʻalahi ka loaʻa ʻana o nā paipu metala ʻē aʻe a me nā Alloys mai ke keleawe, ke kēpau, nickel, keleawe, aluminika a me nā kila kuhili ʻole. Maikaʻi kēia mau mea waiwai a koho pinepine ʻia ma muli o ko lākou kūpaʻa kūʻokoʻa i ke kaʻina hana, ko lākou Heat Transfer maikaʻi, a i ʻole no ko lākou ikaika tensile i nā wela kiʻekiʻe. He kuʻuna ke keleawe a me ke keleawe no nā laina mea kani, ka hana meaʻai a me nā mea hoʻoili wela. Hoʻohana nui ʻia nā kila kila no kēia mau mea.
Paipu Laina
ʻO kekahi mau mea i hōʻike ʻia ma luna, ua hui ʻia e hana i nā ʻōnaehana paipu laina.
No ka laʻana, hiki ke hoʻopaʻa ʻia i loko o kahi paipu kila kalapona me nā mea hiki ke kū i ka hoʻouka kaua kemika e ʻae i kona hoʻohana ʻana e lawe i nā wai corrosive. Hiki ke hoʻohana ʻia nā Linings (Teflon®, no ka laʻana) ma hope o ka hana ʻana i ka paipu, no laila hiki ke hana i nā wili paipu holoʻokoʻa ma mua o ke kau ʻana.
Hiki i nā ʻāpana kūloko ʻē aʻe ke: aniani, nā plastics like ʻole, ke koʻikoʻi a me nā mea ʻē aʻe, a me nā uhi, e like me Epoxy, Bituminous Asphalt, Zink etc. hiki ke kōkua i ka pale ʻana i ka paipu i loko.
Nui nā mea nui i ka hoʻoholo ʻana i ka mea pono. ʻO ka mea nui o kēia mau mea ʻo ke kaomi, ka mahana, ke ʻano huahana, nā ana, nā koina etc.
Ka manawa hoʻouna: Mei-18-2020