Kumu o nā Mea Uhi
He mea nui ka uhi ʻana i ka ʻili o waho o nā paipu kila e pale aku ai i ka popo ʻana. Hiki i ka popo ʻana ma luna o ka ʻili o nā paipu kila ke hoʻopilikia nui i kā lākou hana, ka maikaʻi, a me ke ʻano o ka nānā ʻana. No laila, he hopena nui ke kaʻina hana uhi ʻana i ka maikaʻi holoʻokoʻa o nā huahana paipu kila.
-
Nā Koina no nā Mea Uhi
E like me nā kūlana i hoʻonohonoho ʻia e ka American Petroleum Institute, pono nā paipu kila e kū i ka pala no ka liʻiliʻi o ʻekolu mahina. Eia nō naʻe, ua piʻi aʻe ke koi no nā wā anti-rust lōʻihi, me ka nui o nā mea hoʻohana e koi ana i ke kū'ē no 3 a 6 mau mahina i nā kūlana mālama waho. Ma waho aʻe o ke koi lōʻihi, manaʻo nā mea hoʻohana e mālama nā uhi i kahi ʻili laumania, ka hoʻolaha like ʻana o nā mea anti-corrosive me ka ʻole o nā skips a i ʻole nā kulu e hoʻopilikia paha i ka maikaʻi o ka ʻike.
-
Nā ʻano o nā mea uhi a me kā lākou pono a me nā pōʻino
Ma nā pūnaewele paipu honua o ke kūlanakauhale,nā paipu kilahoʻohana nui ʻia no ka lawe ʻana i ke kinoea, ka ʻaila, ka wai, a me nā mea hou aku. Ua ulu aʻe nā uhi no kēia mau paipu mai nā mea asphalt kuʻuna i nā mea polyethylene resin a me nā mea epoxy resin. Ua hoʻomaka ka hoʻohana ʻana i nā uhi polyethylene resin i nā makahiki 1980, a me nā noi like ʻole, ua ʻike ʻia nā hoʻomaikaʻi mālie i nā ʻāpana a me nā kaʻina hana uhi.
3.1 Uhi ʻAsphalt Petroleum
ʻO ka uhi ʻakipa petroleum, kahi papa anti-corrosive kuʻuna, aia i loko o nā papa ʻakipa petroleum, i hoʻoikaika ʻia me ka lole fiberglass a me kahi kiʻiʻoniʻoni polyvinyl chloride pale waho. Hāʻawi ia i ka pale wai maikaʻi loa, ka hoʻopili maikaʻi ʻana i nā ʻili like ʻole, a me ke kumukūʻai kūpono. Eia nō naʻe, he mau hemahema kona e like me ka maʻalahi i nā loli o ka mahana, lilo i mea palupalu i nā mahana haʻahaʻa, a me ka maʻalahi o ka ʻelemakule a me ka nahā, ʻoi aku hoʻi i nā kūlana lepo pōhaku, e pono ai nā hana pale hou aʻe a me nā kumukūʻai hoʻonui.
3.2 Uhi ʻEpoxy Tar Lanahu
ʻO ka epoxy kēpau lanahu, i hana ʻia mai ka resin epoxy a me ka asphalt kēpau lanahu, hōʻike i ka pale wai a me ke kemika maikaʻi loa, ke kūpaʻa i ka pala, ka hoʻopili maikaʻi ʻana, ka ikaika mechanical, a me nā waiwai insulation. Eia nō naʻe, pono ia i ka manawa hoʻōla lōʻihi ma hope o ka hoʻopili ʻana, e lilo ia i mea maʻalahi i nā hopena maikaʻi ʻole mai nā kūlana o ka wā i kēia wā. Eia kekahi, pono nā ʻāpana like ʻole i hoʻohana ʻia i loko o kēia ʻōnaehana uhi i kahi mālama kūikawā, e hoʻonui ana i nā kumukūʻai.
3.3 Uhi Pauka Epoxy
ʻO ka uhi pauka epoxy, i hoʻolauna ʻia i nā makahiki 1960, pili i ka pīpī ʻana i ka pauka electrostatic ma luna o nā ʻili paipu i mālama mua ʻia a hoʻomehana mua ʻia, e hana ana i kahi papa anti-corrosive mānoanoa. ʻO kona mau pono e komo pū me kahi laulā wela ākea (-60°C a 100°C), ka hoʻopili ikaika, ke kūpaʻa maikaʻi i ka disbondment cathodic, ka hopena, ka maʻalahi, a me ka hōʻino weld. Eia nō naʻe, ʻo kona ʻili lahilahi e hiki ai ke hōʻino ʻia a koi aku i nā ʻenehana hana a me nā lako hana akamai, e hoʻokūkū ana i ka hoʻohana ʻana ma ke kahua. ʻOiai ʻoi aku ka maikaʻi ma nā ʻano he nui, hāʻule ia i ka hoʻohālikelike ʻia me ka polyethylene ma ke ʻano o ke kūpaʻa wela a me ka pale ʻana i ka corrosion holoʻokoʻa.
3.4 Uhi Anti-corrosive Polyethylene
Hāʻawi ka Polyethylene i ke kūpaʻa hopena maikaʻi loa a me ka paʻakikī kiʻekiʻe me kahi pae mahana ākea. Loaʻa iā ia ka hoʻohana nui ʻia ma nā wahi anuanu e like me Rusia a me ʻEulopa Komohana no nā pipelines ma muli o kona maʻalahi a me ke kūpaʻa hopena, ʻoi aku hoʻi i nā mahana haʻahaʻa. Eia nō naʻe, aia nā pilikia i kāna hoʻohana ʻana ma nā paipu anawaena nui, kahi e hiki ai ke haki ʻia ke kaumaha, a hiki i ke komo ʻana o ka wai ke alakaʻi i ka pala ma lalo o ka uhi ʻana, e pono ai ka noiʻi hou aʻe a me nā hoʻomaikaʻi ʻana i nā mea a me nā ʻano hana noi.
3.5 Uhi Kaumaha Anti-corrosion
Hāʻawi nā uhi kaumaha anti-corrosion i ke kūpaʻa ʻana i ka corrosion i hoʻohālikelike ʻia me nā uhi maʻamau. Hōʻike lākou i ka pono lōʻihi ʻoiai i nā kūlana paʻakikī, me ke ola e ʻoi aku ana ma mua o 10 a 15 mau makahiki i nā kemika, kai, a me nā wahi hoʻoheheʻe, a ʻoi aku ma mua o 5 mau makahiki i nā kūlana acidic, alkaline, a i ʻole saline. ʻO ka maʻamau, he mau mānoanoa ʻili maloʻo kēia mau uhi mai 200μm a 2000μm, e hōʻoiaʻiʻo ana i ka palekana maikaʻi a me ke kūpaʻa. Hoʻohana nui ʻia lākou i nā hale kai, nā lako kemika, nā pahu mālama, a me nā pipeline.
-
Nā pilikia maʻamau me nā mea uhi
ʻO nā pilikia maʻamau me nā uhi ʻana e komo pū ana me ka hoʻopili ʻokoʻa ʻole ʻia, ka kulu ʻana o nā mea anti-corrosive, a me ka hoʻokumu ʻia ʻana o nā pehu.
(1) Uhi like ʻole: ʻO ka hoʻolaha like ʻole o nā mea anti-corrosion ma ka ʻili o ka paipu e hopena i nā wahi me ka mānoanoa o ka uhi ʻana, e alakaʻi ana i ka hoʻonele ʻana, ʻoiai ʻo nā wahi lahilahi a i ʻole nā wahi i uhi ʻole ʻia e hōʻemi ana i ka hiki o ka paipu ke pale i ka corrosion.
(2) Ke kahe ʻana o nā mea anti-corrosive: ʻO kēia hanana, kahi e paʻa ai nā mea anti-corrosive e like me nā kulu liʻiliʻi ma ka ʻili o ka paipu, e hoʻopilikia i ka nani me ka ʻole o ka hoʻopilikia pololei ʻana i ke kūʻē ʻana i ka pala.
(3) Ka hoʻokumu ʻia ʻana o nā pehu: ʻO ka ea i paʻa i loko o ka mea anti-corrosive i ka wā o ka hoʻopili ʻana e hana i nā pehu ma ka ʻili o ka paipu, e hoʻopilikia ana i ke ʻano a me ka pono o ka uhi ʻana.
-
Ka Nānā ʻana i nā Pilikia Kūlana Uhi
Kū mai kēlā me kēia pilikia mai nā kumu like ʻole, ua hoʻokumu ʻia e nā kumu like ʻole; a ʻo kahi puʻupuʻu paipu kila i hōʻike ʻia e ke ʻano o ka pilikia hiki ke hui pū ʻia o kekahi mau mea. Hiki ke hoʻokaʻawale ʻia nā kumu o ka uhi ʻokoʻa i ʻelua ʻano, ʻo kekahi ka hanana ʻokoʻa i hoʻokumu ʻia e ka pīpī ʻana ma hope o ke komo ʻana o ka paipu kila i loko o ka pahu uhi; ʻo ka lua ka hanana ʻokoʻa i hoʻokumu ʻia e ka pīpī ʻole ʻana.
ʻO ke kumu o ka hanana mua he mea maʻalahi ke ʻike, i ka wā e hoʻokomo ai ka paipu kila i loko o ka pahu uhi i 360 ° a puni ka huina o 6 mau pū (he 12 mau pū ka laina casing) no ka pīpī ʻana. Inā ʻokoʻa ka nui o ke kahe o kēlā me kēia pū i pīpī ʻia, a laila e alakaʻi ia i ka hoʻolaha like ʻole o ka mea anticorrosive ma nā ʻili like ʻole o ka paipu kila.
ʻO ke kumu ʻelua, aia kekahi mau kumu ʻē aʻe no ka ʻano uhi like ʻole ma waho aʻe o ke kumu pīpī. Nui nā ʻano kumu, e like me ka ʻōpala e komo mai ana i ka paipu kila, ka ʻoʻoleʻa, no laila he paʻakikī ke hoʻolaha like ʻia ka uhi ʻana; aia kahi ana o ke kaomi wai i waiho ʻia ma ka ʻili o ka paipu kila i ka wā e waiho ai ka emulsion, i kēia manawa no ka uhi ʻana ma muli o ka hoʻopili ʻana me ka emulsion, no laila he paʻakikī ke hoʻopili i ka mea mālama i ka ʻili o ka paipu kila, no laila ʻaʻohe uhi o nā ʻāpana paipu kila o ka emulsion, e hopena ana i ka uhi ʻana o ka paipu kila holoʻokoʻa ʻaʻole like.
(1) Ke kumu o ka hāʻule ʻana o ka mea anticorrosive. He poepoe ka ʻāpana kea o ka paipu kila, i kēlā me kēia manawa e pīpī ʻia ai ka mea anticorrosive ma luna o ka paipu kila, e kahe ana ka mea anticorrosive ma ka ʻaoʻao o luna a me ka lihi i ka ʻaoʻao haʻahaʻa ma muli o ke kumu o ke kaumaha, ka mea e hana ai i ka hanana o ka hāʻule ʻana. ʻO ka mea maikaʻi, aia nā lako umu i loko o ka laina hana uhi o ka hale hana paipu kila, hiki ke hoʻomehana a hoʻopaʻa i ka mea anticorrosive i pīpī ʻia ma luna o ka paipu kila i ka manawa a hoʻemi i ke kahe o ka mea anticorrosive. Eia naʻe, inā ʻaʻole kiʻekiʻe ka viscosity o ka mea anticorrosive; ʻaʻohe hoʻomehana kūpono ma hope o ka pīpī ʻana; a i ʻole ʻaʻole kiʻekiʻe ka mahana hoʻomehana; ʻaʻole maikaʻi ke kūlana hana o ka nozzle, a pēlā aku. e alakaʻi i ka hāʻule ʻana o ka mea anticorrosive.
(2) Nā kumu o ka huʻa anticorrosive. Ma muli o ke kaiapuni hana o ka makū o ka lewa, nui ka hoʻopuehu ʻana o ka pena, a ʻo ka emi ʻana o ka mahana o ke kaʻina hana hoʻopuehu e hoʻoulu ai i ka hanana pehu preservative. ʻO ke kaiapuni makū o ka ea, nā kūlana mahana haʻahaʻa, nā preservatives i pīpī ʻia mai loko mai o ka mea i hoʻopuehu ʻia i loko o nā kulu liʻiliʻi, e alakaʻi ai i ka emi ʻana o ka mahana. ʻO ka wai i ka lewa me ke kiʻekiʻe o ka makū ma hope o ka emi ʻana o ka mahana e hoʻopili ʻia e hana i nā kulu wai maikaʻi i hui pū ʻia me ka preservative, a laila komo i loko o ka uhi, e hopena ana i ka hanana blistering uhi.
Ka manawa hoʻouna: Dec-15-2023