API 5L X80 paipu ua lilo i mea koʻikoʻi i loko o nā ʻōnaehana kaʻa aila a me ke kinoea hou ma muli o kāna mau waiwai mechanical kiʻekiʻe a me ka uku-pono. Eia nō naʻe, ʻo ka hōʻoia ʻana i ka lōʻihi a me ka palekana o kēia mau paipu e pono ai nā ana anti-corrosion. Ke ʻimi nei kēia ʻatikala i nā mea koʻikoʻi o ka pale ʻana i nā paipu API 5L X80 mai nā ʻano ʻino like ʻole, e kālele ana i nā ʻano hana a me nā ʻenehana i kākoʻo ʻia e ka noiʻi ʻepekema.
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Palekana i ka uhi
ʻO ka lālani pale mua i ka corrosion i loko API 5L X80 paipu ʻo ia ka hoʻohana ʻana i nā pale pale kiʻekiʻe. ʻO ka uhi ʻana o Fusion bonded epoxy powder (FBE) i koho mua ʻia ma muli o kāna mau waiwai adhesion maikaʻi loa a me ke kūpaʻa kemika. Hoʻopili ke kaʻina hana i ka hoʻomehana ʻana i ka ʻili o ka paipu kila ma kahi o 200 ° C a me ka electrostatically e pili ana i ka pauka, e hoʻoheheʻe a kahe e hana i kahi papa pale mau.
ʻO nā ʻōnaehana polyethylene ʻekolu-papa (3LPE) a me nā ʻōnaehana polypropylene ʻekolu (3LPP) e hōʻike ana i nā ʻenehana uhi kiʻekiʻe e hāʻawi i ka pale i hoʻonui ʻia. Aia kēia mau ʻōnaehana i kahi papa epoxy primer, kahi papa waena adhesive, a me kahi polyethylene waho a i ʻole polypropylene layer. Hāʻawi ka ʻōnaehana 3LPE i ke kūpaʻa kiʻekiʻe i ke koʻikoʻi o ka lepo a me ka pōʻino mechanical, ʻoiai ʻo 3LPP e hāʻawi i ka pale hou aku i nā mahana hana kiʻekiʻe a hiki i 140°C.
ʻO ke koho ʻana i ka uhi kūpono no nā pipeline he mea nui ia e hōʻoiaʻiʻo i ka pale lōʻihi mai ka pōʻino mechanical a me ka corrosion. ʻO nā kūlana o ka lepo, ka mahana hana, a me nā koʻikoʻi mechanical e ʻike ʻia e ka pipeline i kona ola ʻana he mau mea liʻiliʻi wale nō ia e pono e noʻonoʻo ʻia i kēia kaʻina hana. ʻO kekahi mau kūlana, e like me ka lepo paʻakai a i ʻole ka lepo ʻakika, hiki ke hoʻolalelale i ka corrosion, pono i nā uhi me ka hoʻomaikaʻi ʻana i ke kūpaʻa. E like me kēia, hiki i nā mahana hana a me nā pae kaomi ke hoʻopili i ka maikaʻi o ka hana ʻana o nā uhi; ʻoi aku ka maikaʻi o kekahi mau mea i nā kaiapuni me nā wela kiʻekiʻe a i ʻole nā pilikia fluctuating. I ke koho ʻana i kahi uhi, pono e noʻonoʻo kekahi i nā koʻikoʻi mechanical e ʻike ʻia e ka pipeline, e like me nā hopena, nā haʻalulu, a i ʻole ka neʻe ʻana o ka honua, ma kahi o kēia mau mea kaiapuni.
Ka hoomalu ana i ka Microbial Corrosion
ʻO ka microbiologically influenced corrosion (MIC) kahi paʻakikī koʻikoʻi i ka hana pipeline. Hiki i ka hele ʻana o ka bacteria hoʻemi ʻana i ka sulfate (SRB) a me ka bacteria hoʻemi ʻana i ka nitrate (NRB) hiki ke hoʻolalelale i ka nui o ka corrosion. Ke ulu nei kēia mau microorganisms i loko o nā kūlana anaerobic, e hana pinepine ana i nā biofilms e hana ana i nā cell corrosion localized ma ka ʻili paipu.
Loaʻa i nā hoʻolālā hoʻokele MIC kūpono nā papahana lapaʻau biocide maʻamau, me ke koho akahele o nā biocides e pili ana i ka nānā ʻana i ka heluna kanaka bacteria. Hoʻohana maʻamau nā papahana lapaʻau kemika i nā pūhui ammonium quaternary a i ʻole glutaraldehyde-based API 5L X80 paipu. Pono e hoʻopaneʻe ʻia ke alapine dosing a me ka noʻonoʻo ʻana no ka mālama ʻana i ka mana maikaʻi ʻoiai e hōʻemi ana i ka hopena o ke kaiapuni a me nā kumukūʻai hana.
No ka loiloi ʻana i ka pono o nā ala lapaʻau ma nā ʻano like ʻole, ʻoi aku ka nui o nā ʻōnaehana wai, he mea koʻikoʻi ka nānā mau ʻana i nā heluna bacteria. ʻO ka hiki ke ʻike pono a me ka helu ʻana i nā ʻano bacteria i hana i nā ʻano microbiological molecular (MMM) i mea nui i kēia kaʻina hana. ʻOiai ma nā haʻahaʻa haʻahaʻa, hiki ke ʻike koke ʻia nā kaiāulu microbial ma muli o nā ʻano hana e like me ke kaʻina o ka hanauna e hiki mai ana, ka fluorescence in situ hybridization (FISH), a me ka polymerase chain reaction (PCR). Hiki i nā mea noiʻi a me nā ʻenekinia ke loiloi inā e hana ana nā ʻano lapaʻau e like me ka disinfection a i ʻole ka kānana ʻana i nā hopena i manaʻo ʻia e ka nānā ʻana i nā loli i ka ʻokoʻa microbial a me ka nui ma o ka nānā ʻana i nā heluna bacteria i ka manawa. Eia hou, ma ka ʻike ʻana i ka loaʻa ʻana o nā hua bacteria ʻino, hiki i kēia mau ʻenehana ke hāʻawi i kahi ʻōlelo aʻo mua o nā pōʻino olakino.
Palekana uila
He kuleana koʻikoʻi nā ʻōnaehana pale Cathodic i ka pale ʻana i ka corrosion o waho o nā pipeline i kanu ʻia. Ua hōʻike ʻia ka noiʻi ʻana e hiki ke hoʻopōʻino i ka ʻino o ka DC stray au API 5L X80 paipu. ʻO ka hoʻokō ʻana i nā ʻōnaehana cathodic impressed current (ICCP) pono e noʻonoʻo pono i nā gradients kūpono a me ka hāʻawi ʻana i kēia manawa e hōʻoia i ka pale pono me ka ʻole o ka wehe ʻana o ka uhi.
Ua hōʻike ʻia nā haʻawina ʻo ka mālama ʻana i kahi paipu i ka lepo i loko o ka laulā o -850 mV a i -1150 mV (versus Cu/CuSO4 reference electrode) hāʻawi i ka palekana maikaʻi loa me ka hoʻemi ʻana i ka pilikia o ka hoʻoheheʻe ʻana o ka hydrogen. Hiki ke hoʻololi i kēia mau mea hiki ke loaʻa i ka hiki ʻana o nā kahawai DC, pono ke nānā mau a me ka hoʻoponopono ʻana i nā ʻāpana pale.
ʻO nā keʻena hoʻāʻo i hoʻokomo ʻia i nā manawa maʻamau ma ke ala paipu e hiki ai ke ana i nā pono palekana a me nā koi o kēia manawa. Hiki i nā ʻōnaehana kiaʻi mamao o kēia wā ke nānā pono i nā pae palekana a me ka pane wikiwiki i nā hemahema o ka ʻōnaehana pale.
Ka nānā ʻana a me ka ʻike ʻana i ka corrosion
Hoʻokomo ʻia nā polokalamu hoʻokele hoʻokele pono piha i nā ʻano loiloi like ʻole a me ka nānā ʻana. ʻO nā mea paahana In-line inspection (ILI), i lako me ka magnetic flux leakage (MFL) a i ʻole ka ʻenehana kani ultrasonic, e hāʻawi i ka ʻike kikoʻī e pili ana i ka mānoanoa o ka pā paipu a me nā pōʻino ʻino. Pono e mālama ʻia kēia mau holo puaʻa naʻauao i nā manawa i hoʻoholo ʻia e ka loiloi pilikia a me nā helu corrosion mōʻaukala.
ʻO nā anamanaʻo maʻamau o waho corrosion direct assessment (ECDA) e kōkua i ka ʻike ʻana i nā wahi o ka uhi ʻana a i ʻole ka pōʻino. Loaʻa kēia i nā anamanaʻo hiki i ka wā kokoke (CIPS), nā ana ʻana i nā ana ʻana o nā kaha kaha uila uila o kēia manawa (DCVG), a me nā ana ʻana i nā ana kaha kaha gradient o kēia manawa (ACVG). ʻO nā ana resistivity lepo a me ka nānā ʻana i nā laʻana o ka lepo no nā mea corrosive e hāʻawi i ka ʻikepili hou no ka loiloi ʻana i ka pōʻino.
ʻO ka hoʻāʻo ʻana o ka Laboratory no nā laʻana paipu e pili ana i nā hoʻokolohua mechanical like ʻole e loiloi i nā waiwai waiwai a me ka pale ʻana i ka corrosion. Hōʻike ʻo Drop Weight Tear Testing (DWTT) i ke kūʻē ʻana o ka mea i ka haʻihaʻi haʻihaʻi, ʻoiai ʻo ka hoʻāʻo hydrostatic e hōʻoia i ka hiki ke loaʻa ke kaomi o ka pipeline.
API 5L X80 Paipu No ke kuai
LONGMA GROUP kūikawā i ka hana ʻana API 5L X80 paipu e hui ana i nā kikoʻī PSL1 a me PSL2. Hoʻokomo ʻia ke kaʻina hana i nā ʻano hoʻomalu koʻikoʻi e hōʻoia i nā waiwai mechanical a me ka pale ʻana i ka corrosion. Loaʻa nā paipu āpau i ka hoʻāʻo a me ka nānā ʻana ma mua o ka hoʻouna ʻana, me ka hoʻāʻo ultrasonic, ka nānā ʻana i ka radiographic, a me ka hoʻāʻo hydrostatic e like me nā kikoʻī API. Inā koho ʻoe i kāu mea hana huahana, e ʻoluʻolu e hoʻokaʻaʻike mai iā mākou ma info@longma-group.com.
