Ma ke ʻano he mea koʻikoʻi o ka ʻenekini pipeline hou, ua hoʻohana nui ʻia nā paipu kila insulated i ka hoʻomehana ʻana, ka hoʻoluʻu, ka petrochemical, a me nā māla ʻē aʻe. Hoʻopili pololei ko lākou ʻano hana i ka maikaʻi o ka insulation o ka ʻōnaehana, ka lōʻihi, a me ka palekana. No ka hōʻoia ʻana i ka hoʻokō ʻana o ke kūkulu ʻana i ka paipu kila insulated me nā lula, pono ka mālama pono ʻana i nā kūlana ʻenehana kūpono, e koi ana i ka hoʻomalu pono ʻana mai ke koho ʻana i nā mea, hoʻomākaukau kūkulu, a me nā kaʻina hana.
I. Nā Kūlana Pono a me ka ʻae ʻana
ʻO nā mea nui no nā paipu kila i hoʻopaʻa ʻia, ʻo ia ka paipu kila, ka papa hoʻopulapula (e like me ka polyurethane foam, ka hulu pōhaku), a me ka pahu o waho (e like me ka polyethylene kiʻekiʻe a i ʻole ka hao galvanized). Ma mua o ka hana ʻana, pono e hoʻokō nā mea hana a pau i nā kūlana aupuni, e like me "GB/T 29047-2012 High-density polyethylene outer casing, polyurethane foam plastic prefabricated direct-buried insulated pipe" a i ʻole "GB/T 17393-2008 Direct Specification for Covered Insulated Direct Pipeline."
Paipu kila: Pono e hoʻokō me GB/T 8163 -2018 Seamless Steel Pipe no ka Holo ʻana o ka wai a i ʻole GB/T 3091-2015 Welded Steel Pipe no ka Haʻahaʻa-Pressure Fluid Transportation, e hōʻoia ana i ka nele o nā hemahema e like me nā māwae a me nā pinhole.
ʻO ka hoʻopololei: Pono e loaʻa i ka ʻōhua polyurethane ka wela o ka liʻiliʻi ma mua o a i ʻole like me 0.024 W/(m·K), ʻoi aku ka nui ma mua o a i ʻole like me 60 kg/m³, a me ka ikaika compressive o ʻoi aʻe ma mua a i like paha me 0.3 MPa.
Pipa waho: Polyethylene -kiʻekiʻe kiʻekiʻe (HDPE) me ka ikaika tensile o ʻoi aku ka nui a i ʻole like me 20 MPa a me ka elongation ma ka haki ʻana o ʻOi aʻe ma mua a i ʻole like me 350% e hōʻoia i ka hopena a me ka pale ʻana.
Pono e hāʻawi ʻia nā mea me kahi palapala hōʻoia a me kahi hōʻike hoʻāʻo ma ka hōʻea ʻana, a pono e mālama ʻia kahi nānā ʻike. Pono e pāpā ʻia ka hoʻohana ʻana i nā pōʻino, deformation, a i ʻole nā mea ʻē aʻe.
II. Hoʻomākaukau kūkulu
Nānā Wahi: Ma mua o ke kūkulu ʻia ʻana, pono e nānā ʻia ke ala paipu, ka hohonu o ke kanu ʻana, a me nā kūlana lepo e hōʻoia i ka hoʻokō ʻana i nā koi hoʻolālā. ʻEli ʻauwaha: Pono ka ʻauwaha no nā paipu kila i hoʻolele ʻia i kanu ʻia me ka "GB 50268-2008 Specification for Construction and Acceptance of Water Supply and Drainage Pipeline Projects." Pono ka ʻauwaha e palahalaha a ʻaʻohe pōhaku ʻoi. Pono e waiho ʻia kahi papa cushion one maikaʻi (ka mānoanoa ʻoi aku ka nui a i ʻole like me 100 mm) inā pono.
Paipu Paipu: Pono e hana mua ʻia nā paipu kila i hoʻopaʻa ʻia i loko o ka hale hana a i ʻole ma -kahi e hōʻoia ai i ka paʻa pono ma waena o ka papa hoʻopulapula a me ka paipu kila, me ka ʻole o nā lua a i ʻole nā māwae.
III. Nā Kūlana Kaʻina Hana Hoʻokomo
Pipeline welding: Argon arc welding a i ʻole uila arc welding pono e hoʻohana. Pono nā welds i 100% nānā ʻike maka a me ka hoʻāʻo ʻole -destructive (e like me ka X-ray a i ʻole ka hoʻāʻo ultrasonic) e hōʻoia i ka hoʻokō ʻana i ke kūlana "GB/T 12467-2018 Radiography of Fusion Welded Joints of Metallic Materials".
Hoʻokomo ʻia ka Layer Insulation: Pono e hoʻohūhū ʻia ka ʻāpana polyurethane foam insulation ma -situ no ka hoʻopaʻa ʻana i ka ʻahuʻula like ʻole, me ka ʻole o ka emi ʻana a me ka pohā. Pono e hoʻopaʻa paʻa ʻia ka pahu o waho a me ka papa insulation e pale i ka komo ʻana o ka wai. Hoʻomaʻamaʻa Interface: Pono e hoʻomau ka papa insulation ma nā pilina paipu (e like me nā flanges a me nā hui welded). Pono e ho'opa'a 'ia nā hui me nā mea ho'opa'a sila kūikawā (e like me ka polyurethane adhesive a i 'ole ka rubber -plastic insulation tape) i mea e pale aku ai i ka ho'opili wela.
Nā Koina Hoʻihoʻi: I ka hoʻopiha piha ʻana i nā laina paipu i kanu ʻia, pono e hoʻohana ʻia ke one maikaʻi a i ʻole ka lepo palupalu i loko o 500 mm ma luna o ka piko o ka paipu no ka pale ʻana i ka pilina pololei ma waena o nā mea paʻakikī a me ka paipu. Pono e hoʻopaʻa ʻia ka ʻāina backfill i ka papa ma ka ʻāpana i kahi mānoanoa o ʻoi aku ka nui a i ʻole like me 95%.
IV. Kūlana ʻae ʻia ka maikaʻi
Nānā Hiʻona: Pono ka papa insulation e maʻemaʻe, me ka ʻole o ka pōʻino a i ʻole ka ʻili ʻana, a ʻo ka pahu o waho e pono ʻole i nā ʻōpala a i ʻole deformation.
ʻO ka hoʻāʻo ʻana i ka Thermal Insulation Performance Testing: E hoʻohana i kahi kāmela kiʻi thermal a i ʻole ka mea hoʻāʻo conductivity thermal e hōʻoia i ka hana insulation a hōʻoia i ka hoʻokō ʻana i nā koi hoʻolālā.
Ho'āʻo Pressure: Ma hope o ka hoʻokomo ʻana, pono e hana ka pipeline i kahi hoʻokolohua hydraulic pressure ma 1.5 mau manawa o ke kaomi hana. ʻAʻole ʻae ʻia kahi hoʻāʻo no ka leakage ma hope o 30 mau minuke o ke kaomi paʻa. Ka ho'āʻo ʻino: Inā ua uhi ʻia ka paipu kila me kahi pale -ʻino (e like me 3PE a i ʻole ka pauka epoxy), pono e hoʻohana ʻia kahi mea ʻike leak spark no ka hōʻoia ʻana i ka ʻole o ka lī.
V. Pono palekana a me ke Kaiapuni
Palekana kūkulu: Pono e hoʻohana ʻia nā kāʻei palekana i ka wā e hana ana ma ke kiʻekiʻe, a pono e hana ʻia nā hana kuʻi ʻana me nā hana pale ahi e pale ai i ke ahi a me ke ahi.
Nā Koina Kaiapuni: Pono e mālama pono ʻia nā mea ʻōpala polyurethane i mea e pale aku ai i ka hoʻohaumia ʻana i ke kaiapuni e nā mea maʻalahi, a pono e hoʻokaʻawale ʻia nā mea ʻōpala a hoʻokaʻawale ʻia.
Ka hopena
ʻO nā kūlana hana no nā paipu kila insulated e pili ana i nā ʻano he nui, me nā mea waiwai, nā kaʻina hana, a me nā nānā ʻana. Pono e mālama pono kēia mau mea i nā lula aupuni a me nā ʻoihana e hōʻoia i ka hana paʻa o ka ʻōnaehana paipu no ka wā lōʻihi. Pono e hoʻoikaika ʻia ka mana o ka maikaʻi a me ka nānā mau ʻana i ka wā o ke kūkulu ʻana i mea e pale ai i ka hāʻule ʻana o ka insulation a i ʻole ka pōʻino paipu ma muli o ke kūkulu kūpono ʻole, a laila e hōʻoia ai i ka maikaʻi o ka papahana a me ke ola lawelawe.
