AS 1579 paipu kilaHe paipu kila i hoʻohana nui ʻia no ka lawe ʻana i ka wai a me ka wai ʻino me ke anawaena o waho o ≥ 114 mm a no nā puʻu paipu me ke kaomi helu ʻaʻole ʻoi aku ma mua o 6.8 MPa.
ʻO nā puʻu paipu he mau lālā hana pōʻai i hoʻolei ʻia i loko o ka lepo a ʻaʻole hoʻohana ʻia no ka hoʻomalu ʻana i ke kaomi kūloko.
ʻO 114mm ka palena iki o waho, ʻoiai ʻaʻohe palena kikoʻī i ka nui o ka paipu akā hāʻawi ʻia nā nui makemake.
E hana ʻia mai nā māka i kālailai ʻia a i ʻole nā papa hana o ke kila ʻōwili wela e like me AS/NZS 1594 a i ʻole AS/NZS 3678.
Ma muli o ka hoʻohana hope ʻana ua hoʻokaʻawale ʻia e like me kēia:
ʻO nā paipu hoʻāʻo hydrostaticallye hana ʻia mai kahi kānana a i ʻole ka papa hana o ke kila ʻōwili wela e like me AS/NZS 1594 a i ʻole AS/NZS 3678.
Piles a me ka paipu ho'āʻo ʻole hydrostaticallye hana ʻia mai ke kila kila e like me AS/NZS 1594 a i ʻole AS/NZS 3678.
ʻO kahi ʻē aʻe,puʻuhiki ke hana ʻia mai kahi papa anana e like me AS/NZS 1594., a ma ia hihia e hoʻāʻo ʻia ke kila e like me ka AS 1391 e hōʻike i ka hoʻokō ʻana i nā koi tensile i kuhikuhi ʻia e ka mea kūʻai.
Hana ʻia ka paipu kila AS 1579 me ka hoʻohana ʻanaarc welding.
ʻO nā wiliwili a pau e hoʻokomo piha ʻia i nā welds butt.
Hoʻohana ʻo Arc welding i ka wela o kahi arc uila e hoʻoheheʻe i nā mea metala a hana i kahi hui welded ma waena o nā metala e hana i kahi ʻano paipu kila mau.
ʻO ke kaʻina hana hana hoʻoheheʻe arc maʻamau ʻo SAW (Submerged Arc Welding), ʻike ʻia hoʻiDSAW, hiki ke hoʻokaʻawale ʻia i lokoLSAW(SAWL) a me SSAW (HSAW) e like me ke kuhikuhi o ka weld butt.
Ma waho aʻe o SAW, aia kekahi mau ʻano o ka wili arc e like me GMAW, GTAW, FCAW, a me SMAW.Loaʻa i nā ʻano hana wili arc i kā lākou mau hiʻohiʻona ponoʻī a me nā hiʻohiʻona noiʻi, a ʻo ke koho ʻana i ke ʻano wili kūpono e pili ana i nā kikoʻī o ka paipu kila e hana ʻia, ka waihona kālā, a me nā koi o ka maikaʻi.
ʻAʻole hōʻike pololei nā maʻamau i nā haku mele a me nā waiwai mechanical, no ka mea, pili pinepine kēia i nā kūlana kila kūikawā e like me AS / NZS 1594 a i ʻole AS / NZS 3678, e kikoʻī ana i nā koi a me nā waiwai mechanical o ke kila i hoʻohana ʻia e hana i kēia. paipu.
Hōʻike ka AS 1579 i ka like kalapona wale nō.
ʻAʻole ʻoi aku ka nui o ke kalapona (CE) o ke kila ma mua o 0.40.
CE=Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15
ʻO CE kahi ʻāpana koʻikoʻi i hoʻohana ʻia e loiloi i ka weldability o ke kila.Kōkua ia i ka wānana i ka paʻakikī e hiki mai ana i ke kila ma hope o ka wili ʻana a no laila e loiloi i kona hiki ke hoʻopaʻa ʻia.
Pono ka hoʻāʻo ʻana o ka hydrostatic pressure no kēlā me kēia wai a i ʻole nā paipu kila wai ʻino i hoʻohana ʻia no ka lawe ʻana.
ʻAʻole koi ʻia nā puʻu paipu e hoʻāʻo hydrostatically no ka mea ua hoʻohana mua ʻia lākou no ka lawe ʻana i nā ukana hana ma mua o ke kaomi kūloko.
Nā Kumu Hoʻokolohua
Hoʻopaʻa ʻia ka paipu ma kēlā me kēia hopena a kaomi hydrostatically.
Nānā ia no ka ikaika ma kahi kaomi e hōʻike ana i ke kaomi hoʻolālā o ka paipu.Hoʻāʻo ʻia no ka paʻa ʻana o ka leak ma ke kaomi helu o ka paipu.
Nā Paʻi Hoʻokolohua
ʻO ka helu kiʻekiʻe loa o ka paipu kila he 6.8 MPa. ʻO kēia ka palena kiʻekiʻe e kuhikuhi ʻia e ka palena o nā mea hana hoʻāʻo kaomi o 8.5 MPa.
Pr= 0.72×(2×SMYS×t)/OD a i ʻole Pr= 0.72×(2×NMYS×t)/OD
Pr: Pumi i helu ʻia, ma MPa;
SMYS: ʻO ka ikaika hāʻawi liʻiliʻi loa, ma MPa;
NMYS: Nominal liʻiliʻi hua ikaika, ma MPa;
t: Ka mānoanoa o ka pā, i mm;
OD: Ke anawaena o waho, i mm.
I nā kūlana ulia pōpilikia, hiki ke alakaʻi i ka piʻi ʻana o ke koʻikoʻi o ka paipu.Ma lalo o kēia mau kūlana, e hoʻoholo ʻia ka nui o nā koʻikoʻi hui ʻia e ka mea hoʻolālā, akā ʻaʻole ʻoi aku ma mua o 0.90 x SMYS.
Pt= 1.25Pr
Ma hope o ka ho'āʻo ikaika, ʻaʻohe nahae a leaka paha i ka paipu hoʻāʻo.
90% o ka ikaika hāʻawi liʻiliʻi loa (SMYS) a i ʻole ka ikaika hua liʻiliʻi loa (NMYS) a i ʻole 8.5 MPa, ʻo ia ka mea i emi iho.
Pl= Pr
E hana ʻia kahi hoʻāʻo leak ma ka paipu.
Ma ka hoʻāʻo ʻana i ka leak, ʻaʻohe leakage e ʻike ʻia ma ka ʻili o ka paipu.
ʻO nā paipu hoʻāʻo non-hydrostatic āpau e loaʻa i ka mānoanoa pā ʻaʻole i emi ma lalo o 8.0 mm.
ʻO ka paipue loaʻa iā 100% o kāna mau welds i hoʻāʻo ʻole ʻia e ka ultrasonic a i ʻole radiographic nā ʻano e like me ka AS 1554.1 Category SP a e hoʻokō i nā koina ʻae ʻia.
ʻO ka hoʻāʻo ʻole ʻana i nā welds puʻu hapano na paipu paipu.E hoʻokō nā hopena hoʻāʻo me nā koi AS/NZS 1554.1 Class SP.Inā hōʻike ka nānā ʻana i ka hoʻokō ʻole ʻana i ka lepili, e nānā ʻia ka weld holoʻokoʻa ma kēlā puʻu paipu.
ʻO nā paipu a me nā mea pono i hoʻohana ʻia no ka lawe ʻana i ka wai a me ka ʻōpala e pale ʻia mai ka ʻino ʻana ma ke koho ʻana i kahi uhi kūpono.
I ka hihia o ka wai inu, pono lākou e hoʻokō me AS / NZS 4020. ʻO ka pahuhopu e hōʻoia i kēia mau huahana, i ka wā e hoʻopili ai me ka ʻōnaehana wai, ʻaʻole e hoʻopilikia i ka maikaʻi o ka wai, e like me ka contamination kemika, microbiological. ka hoʻohaumia ʻana, a i ʻole ka hoʻololi ʻana i ka ʻono a me ke ʻano o ka wai.
ʻO ka ʻili o waho o ka paipu, ʻaʻole i ʻoi aku ma mua o 150 mm mai ka hopena, e hōʻailona maopopo ʻia a mau loa me kēia ʻike:
a) He helu serial kū hoʻokahi, ʻo ia hoʻi ka helu paipu;
b) Kahi o ka hana ʻana;
c) Ke anawaena o waho a me ka mānoanoa o ka pā;
d) Helu maʻamau, ʻo ia hoʻi ʻo AS 1579;
e) Ka inoa a ka mea hana paha;
f) Hydrostatic test pipe pressure rating (no ka paipu kila wale no i ho'āʻo hydrostatic);
g) ʻO ka hōʻailona hōʻailona hōʻailonaʻole (NDT) (no ka paipu kila wale nō i hana i ka ho'āʻoʻole).
E hāʻawi ka mea hana i ka mea kūʻai aku i kahi palapala hōʻailona e hōʻike ana ua hana ʻia ka paipu e like me nā koi o ka mea kūʻai aku a me kēia maʻamau.
ASTM A252: Hoʻolālā ʻia no nā puʻu paipu kila a loaʻa nā ʻano mīkini kikoʻī a me nā kikoʻī hoʻohui kemika no nā papa hana ʻekolu.
EN 10219: pili ana i na paipu kila wiliwili i hanaia no ka hoohana ana me na paipu paipu.
ISO 3183: Paipu laina kila no ka ʻoihana aila a me ke kinoea, me ka maikaʻi a me ka ikaika e pono ai no ka lawe ʻana i nā puʻu paipu.
API 5L: Hoʻohana nui ʻia no nā pipeline kaʻa i ka ʻoihana aila a me ke kinoea, ua kūpono hoʻi nā kūlana kiʻekiʻe no ka hana ʻana i nā puʻu i kau ʻia i nā ukana kiʻekiʻe.
CSA Z245.1: Hōʻike i nā paipu kila a me nā mea pono no ka lawe ʻana i ka aila a me ke kinoea, i kūpono hoʻi no nā puʻu paipu.
ASTM A690: Hoʻolālā ʻia no nā puʻu paipu kila i hoʻohana ʻia ma ka moana a me nā kaiapuni like, e hoʻoikaika ana i ka pale ʻana i ka corrosion.
JIS A 5525: ʻO ka maʻamau Iapana e uhi ana i ka paipu kila no nā paipu paipu, me nā mea waiwai, ka hana, ka nui a me nā koi hana.
GOST 10704-91: He paipu kila wili pololei i wiliwili ʻia me ka uila no ka hoʻohana ʻana i ka hale a me nā hale ʻenekinia, me nā puʻu paipu.
GOST 20295-85: Nā kikoʻī o nā paipu kila uila i hoʻopaʻa ʻia no ka lawe ʻana i ka aila a me ke kinoea, e hōʻike ana i kā lākou hana ma lalo o ke kaomi kiʻekiʻe a ma nā wahi paʻakikī, pili i nā puʻu paipu.
Mai kona hoʻokumu ʻana i ka makahiki 2014, ua lilo ʻo Botop Steel i mea hoʻolako alakaʻi i ka paipu kila carbon ma Northern China, i ʻike ʻia no ka lawelawe maikaʻi loa, nā huahana kiʻekiʻe, a me nā hoʻonā piha.
Hāʻawi ka hui i nā ʻano paipu kila kalapona a me nā huahana pili, me ka seamless, ERW, LSAW, a me ka paipu kila SSAW, a me ka laina piha o nā paipu paipu a me nā flanges.
ʻO kāna mau huahana kūikawā pū kekahi me nā mea kila kiʻekiʻe a me nā austenitic stainless steel, i hana ʻia e hoʻokō i nā koi o nā papahana pipeline like ʻole.
