ʻIke i nā uwea pale wai

1. He aha ke kaula wai?
ʻO nā uwea hiki ke hoʻohana maʻamau i loko o ka wai, ua kapa ʻia ʻo ia he mau uwea mana pale wai (waterproof). Ke waiho ʻia ke kaula i lalo o ka wai, hoʻokomo pinepine ʻia i ka wai a i ʻole nā ​​wahi pulu, pono ke kaula e loaʻa ka hana o ka pale ʻana i ka wai (kūʻē), ʻo ia hoʻi, pono e loaʻa ka hana o ke kūpaʻa wai piha, i mea e pale ai i ka wai mai ke kau ʻana i ke kaula, e hōʻino i ke kaula, a me ka hōʻoia ʻana i ka hana paʻa o ke kaula ma lalo o ka wai. ʻO ke kumu hoʻohālike maʻamau i hoʻohana ʻia ʻo JHS, nona ka lima lima ʻole o ke kaula wai, ua māhele pū ʻia ke kaula wai i ka uwea mana wai a me ke kaula kamepiula wai ʻole, a me nā mea ʻē aʻe, a ʻo FS-YJY, FS-DJYP3VP3 nā mea hoʻohālike.

2. Ke 'ano o ke kaula uwea wai
(1). No nā uwea kumu hoʻokahi, wili i kalipine ālai wai semi-conductivema ka pale insulation, uhi i ka mea maʻamaulipine ālai waima waho, a laila kaomi i ka pahu o waho, i mea e hōʻoia ai i ka pili piha ʻana o ka pale metala, e hoʻopili wale i ka tape semi-conductive water blocking tape ma waho o ka pale insulation, ʻaʻole e hoʻopili hou ka pale metala i ka lipine pale wai, e hilinaʻi ana i ke kiʻekiʻe o nā pono hana wai ʻole, hiki ke hoʻopiha ʻia ka hoʻopiha ʻana me ka mea hoʻopihapiha maʻamau a i ʻole ka hoʻopiha wai. ʻO ka ʻili o loko a me nā mea hoʻoheheʻe waho e like me nā mea i wehewehe ʻia ma ke kaula kumu hoʻokahi.

(2). Hoʻopili lōʻihi ʻia kahi ʻāpana lipine alumini i uhi ʻia i loko o ka puʻu o waho a i ʻole ka ʻili o loko ma ke ʻano he papa wai.

(3). E hoʻokuʻu pololei i ka uhi waho HDPE ma ke kaula. ʻO ke kaula i hoʻopaʻa ʻia ʻo XLPE ma luna o 110kV ua hoʻolako ʻia me kahi pahu metala e hoʻokō i nā koi wai. ʻO ka pale metala he impenetrability piha a me ke kūpaʻa wai radial maikaʻi. ʻO nā ʻano nui o ka puʻu metala: lima lima alumini wela, lima lima alakaʻi wela, lima lima alumini i hoʻopaʻa ʻia, lima lima kila i hoʻopaʻa ʻia, lima lima metala huki anu a pēlā aku.

3. ʻO keʻano waiʻole o ke kaula wai
Hoʻokaʻawale maʻamau i ʻelua kūpaʻa wai Vertical a me radial. Hoʻohana pinepine ʻia ke kūpaʻa wai kū pololeilola ālai wai, wai ka pauka a me ka wai ālai tape, ka wai kū'ē i loko o kēia mau mea i loko o ka wai hiki ke hoonui mea, i ka wai mai ka uwea hopena a mai ka sheath hemahema i loko, keia mea e hoonui koke i ka wai e pale hou ae ma ka uwea longitudinal, e hoʻokō i ke kumu o ka uwea longitudinal wai. Hoʻokō nui ʻia ke kūpaʻa wai radial ma ka extruding HDPE non-metallic sheath a i ʻole kaomi wela, kuʻi ʻana a me ka huʻu metala huki anu.

4. Hoʻokaʻawale i nā kaula wai
ʻEkolu mau ʻano o nā kaula wai ʻole i hoʻohana ʻia ma Kina:
(1). ʻO ke kaula i hoʻopaʻa ʻia i ka ʻaila-pepa ka mea maʻamau maʻamau. Hoʻopiha ʻia kona insulation a me nā conductors i ka ʻaila ʻaila, a aia kahi ʻaʻahu metala (lead jacket a i ʻole ka lole alumini) ma waho o ka insulation, ʻo ia ka ʻoi aku ka maikaʻi o ke kaula pale wai. I ka wā ma mua, nui nā kaula submarine (aiʻole ma lalo o ka wai) i hoʻohana i nā kaula i hoʻopaʻa ʻia i ka ʻaila-pepa, akā ua kaupalena ʻia nā kaula i hoʻopaʻa ʻia i ka ʻaila-pepa e ka hāʻule, aia ka pilikia me ka leakage aila, a ʻaʻole kūpono ka mālama ʻana, a i kēia manawa ua hoʻohana ʻia a emi iki.

(2). ʻO ka ethylene propylene rubber insulated cable i hoʻohana nui ʻia i nā laina haʻahaʻa haʻahaʻa a me ka haʻahaʻa haʻahaʻa ma lalo o ka wai ma muli o kāna hana insulation kiʻekiʻe me ka hopohopo ʻole o ka "lāʻau wai". Hiki ke hana pono i ka wai pāpaʻu no ka manawa lōʻihi (Type JHS).

(3). Cross-linked polyethylene (XLPE) insulated power cable ma muli o kona maikaʻi uila, mechanical and physical properties, a he maʻalahi ke kaʻina hana, māmā ke ʻano, ka nui o ka hoʻouna ʻana, hoʻonohonoho a mālama ʻia ka maʻalahi, ʻaʻole i kaupalena ʻia e ka hāʻule a me nā pono ʻē aʻe, lilo ia i mea hoʻohana nui i ka insulation. uwea. No laila, ʻo ke kaula i hoʻopaʻa ʻia i ka polyethylene i hoʻopili ʻia, ʻoi aku ka nui o ke kaula waena a me ke kaula uila kiʻekiʻe ma lalo o ka hana o ka volta AC, pono e loaʻa i kahi "wai blocking structure" ke hoʻohana ʻia i loko o kahi wai a i ʻole ka wai.

5. ʻO ka ʻokoʻa ma waena o ke kaula wai a me ke kaula maʻamau
ʻO ka ʻokoʻa ma waena o nā kaula wai a me nā kaula maʻamau ʻaʻole hiki ke hoʻohana ʻia nā kaula maʻamau i ka wai. ʻO ke kaula wai ʻole ʻo JHS kekahi ʻano o ka uwē paʻa paʻa, ʻo ka insulation ʻo ia ka hoʻokaʻawale ʻana, a ʻo ke kaula hoʻoheheʻe maʻamau, hoʻohana pinepine ʻia ke kaula wai ʻole JHS, akā aia i loko o ka wai a i ʻole e hele kekahi i loko o ka wai. ʻO nā kaula wai ʻole he 3 mau kumu, ʻo ka hapa nui o lākou e hoʻohana ʻia i ka wā e hoʻopili ai i ka paila, ʻoi aku ka maikaʻi o ke kumukūʻai o nā kaula wai ʻole ma mua o nā kaula hoʻoheheʻe maʻamau, paʻakikī ke ʻike inā ʻaʻohe wai mai ka helehelena, pono ʻoe e nīnau i ka mea kūʻai aku e ʻike i ka papa wai.

6. ʻO nā ʻokoʻa ma waena o ke kaula wai ʻole a me ke kaula pale wai
ʻO ke kaula pale wai: pale i ka wai mai ke komo ʻana i loko o ka hale uea, me ka hoʻohana ʻana i kahi ʻano wai a me nā mea.

Kālepa pale wai: ʻO ka hoʻāʻo e hiki i ka wai ke komo i loko o ke kaula, ʻaʻole e ʻae i ke komo ʻana i ka lōʻihi i ʻōlelo ʻia ma lalo o nā kūlana i kuhikuhi ʻia. Hoʻokaʻawale ʻia ke kaula hoʻopaʻa wai i ka pale wai conductor a me ka hoʻopaʻa wai kumu.

ʻO ke ʻano o ka mea hoʻokele wai: hoʻohui i ka pauka pale wai a me ke kaula pale wai i ke kaʻina o ke kaula uea hoʻokahi, i ka wā e komo ai ke alakaʻi i ka wai, hoʻonui ʻia ka wai paʻa wai a i ʻole ka wai paʻa wai e pale i ke komo ʻana o ka wai.

ʻO ke ʻano pale wai o ke kumu uwea: i ka wā i poino ai ka pūwaha o waho a komo ka wai, hoʻonui ʻia ka lipine paʻa wai. Ke hoʻonui ʻia ka lipine paʻa wai, hana koke ia i ʻāpana pale wai e pale i ke komo hou ʻana i ka wai. No ke kaula ʻekolu-core, paʻakikī loa ka hoʻokō ʻana i ke kūpaʻa wai holoʻokoʻa o ke kumu uwea, no ka mea, ʻo ka waena waena o ka ʻekolu-core cable core he nui a ʻaʻole i maʻamau, ʻoiai inā hoʻopiha ʻia ka hoʻohana ʻana i ka wai wai, ʻaʻole maikaʻi ka hopena o ka wai, ua manaʻo ʻia e hana ʻia kēlā me kēia kumu e like me ke ʻano o ka wai kū hoʻokahi, a laila kūkulu ʻia ke kaula.