Nā pono o Double Submerged Arc Welded Gas Line Pipe
I ka honua o ka paipu, aia nā ʻano hana a me nā mea hana.ʻO ke ʻano hoʻohui paipu kaulana ʻo ia ka welding arc submerged arc (DSAW).Hoʻohana mau ʻia kēia ʻano hana ma nā laina kinoea a me ka wai, a no ke kumu maikaʻi.Ma kēia blog e ʻimi mākou i nā pono o ka hoʻohana ʻanawiliwili ʻia nā arc submerged pāluapaipu ma keia mau noi.
Na Pono Mechanical o ka paipu SSAW
kila kila | ikaika hua liʻiliʻi | ka palena iki tensile ikaika | ʻO ka lōʻihi liʻiliʻi |
B | 245 | 415 | 23 |
X42 | 290 | 415 | 23 |
X46 | 320 | 435 | 22 |
X52 | 360 | 460 | 21 |
X56 | 390 | 490 | 19 |
X60 | 415 | 520 | 18 |
X65 | 450 | 535 | 18 |
X70 | 485 | 570 | 17 |
ʻO ka hui kemika o nā paipu SSAW
kila kila | C | Mn | P | S | V+Nb+Ti |
Max % | Max % | Max % | Max % | Max % | |
B | 0.26 | 1.2 | 0.03 | 0.03 | 0.15 |
X42 | 0.26 | 1.3 | 0.03 | 0.03 | 0.15 |
X46 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X52 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X56 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X60 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
X65 | 0.26 | 1.45 | 0.03 | 0.03 | 0.15 |
X70 | 0.26 | 1.65 | 0.03 | 0.03 | 0.15 |
ʻO ka hoʻomanawanui Geometric o nā paipu SSAW
Nā hoʻomanawanui geometric | ||||||||||
anawaena waho | Mānoanoa pā | pololei | waho o ka poepoe | nuipaʻa | ʻO ke kiʻekiʻe o ka weld bead kiʻekiʻe | |||||
D | T | |||||||||
≤1422mm | >1422mm | <15mm | ≥15mm | ka hopena paipu 1.5m | piha loa | kino paipu | paipu hope | T≤13mm | T>13mm | |
±0.5% | e like me ka aelike | ± 10% | ±1.5mm | 3.2mm | 0.2% L | 0.020D | 0.015D | '+10% | 3.5mm | 4.8mm |
Hoʻāʻo Hydrostatic
E kū ka paipu i ka hoʻāʻo hydrostatic me ka ʻole o ka leaka ma o ka weld seam a i ʻole ke kino paipu
ʻAʻole pono e hoʻāʻo hydrostatically nā hui hui, inā ua hoʻāʻo maikaʻi ʻia nā ʻāpana o ka paipu i hoʻohana ʻia no ka hōʻailona ʻana i nā mea hoʻohui i ka hydrostatically ma mua o ka hana ʻana.
ʻO ka mea mua, ʻo ka hoʻoheheʻe ʻana i nā arc submerged ʻelua he ala kūpono a me ka waiwai o ka hoʻohui ʻana i nā paipu.ʻO ke kaʻina hana ka hana ʻana i kahi weld ma ke kaomi ʻana i ka paipu i loko o kahi kahe granular me ka hoʻohana ʻana i ʻelua arc wili.Hoʻokumu kēia i kahi weld ikaika a paʻa i hiki ke kū i ke kaomi kiʻekiʻe a me ka ʻāʻī, e kūpono ia no nā laina kinoea a me ka wai.
ʻO kekahi o nā pōmaikaʻi nui o ka paipu hoʻoheheʻe ʻia ʻelua submerged arc ʻo ia kona kūpaʻa ʻana i ka corrosion.ʻO ka flux granular i hoʻohana ʻia i kēia kaʻina hana hoʻoheheʻe e hana i kahi papa pale ma luna o ka weld, e kōkua ana i ka pale ʻana i ka corrosion a hoʻonui i ke ola o ka paipu.He mea nui kēia nopaipu laina wai, no ka mea e hoʻomaʻemaʻe ʻia ka wai i hāʻawi ʻia me ka ʻole o ka haumia.
Ma waho aʻe o ka pale ʻana i ka corrosion, hāʻawi ʻia nā paipu i hoʻoheheʻe ʻia i loko o ka wai lua i ka waiwai mechanical maikaʻi loa.Hoʻopuka kēia ʻano i nā welds like a me kahi paipu ikaika a hilinaʻi.He mea koʻikoʻi kēia no nā pipeline kinoea maoli no ka mea e hōʻoiaʻiʻo ana i ka lawe ʻana i ka ʻea kūlohelohe me ka ʻole o ka leaka a i ʻole nā haʻule.
Eia hou, hiki i nā paipu i hoʻoheheʻe ʻia i loko o ka wai lua ke kū i nā wela wela a me nā kūlana kaiapuni.ʻO kēia ka mea kūpono iā lākou no nā noi ma uka a ma waho paha e ʻike ʻia i ka wā ʻino a me nā kūlana hana.No ka paipu laina wai, e hōʻoia kēia paʻa i hiki i nā paipu ke hoʻoneʻe i ka wai me ka ʻole o ka hoʻokō ʻana i ka hana.
ʻO kekahi mea maikaʻi o ka hoʻohana ʻana i ka paipu i hoʻoheheʻe ʻia i loko o ʻelua submerged arc, ʻo ia ka maʻalahi a me ka nani.ʻO kēia ka mea i koho maikaʻi ʻia no nā hoʻonohonoho ma luna a ma lalo o ka honua, no ka mea he maʻalahi lākou e nānā a mālama.Hoʻohui ʻia, ʻo ka ʻili o ka weld e hōʻemi i ka friction a me ka hāʻule ʻana o ke kaomi i loko o ka paipu, e kōkua ana i ka hoʻomaikaʻi ʻana i ka pono holoʻokoʻa o nā ʻōnaehana hāʻawi wai.
I ka hopena, he mea maikaʻi loa ke koho ʻana no ka paipu welded arc pāluapaipu laina kinoeaa me ka paipu laina wai.ʻO kāna kaʻina hana hoʻoheheʻe maikaʻi a me ke kumu kūʻai, i hui pū ʻia me ka pale ʻana i ka corrosion, nā waiwai mechanical maikaʻi loa, ka lōʻihi a me ka aesthetics, e lilo ia i koho mua no ka hana ʻana i ka pipeline.ʻO ka lawe ʻana i ke kinoea maoli a i ʻole ka wai, hāʻawi kēia mau paipu i ka ikaika a me ka hilinaʻi e pono ai e hana me ka palekana a me ka maikaʻi.ʻIke loa, ʻo ka paipu i hoʻoheheʻe ʻia i loko o ka pahu pālua he waiwai nui i ka honua kūkulu pipeline.