ʻOi aku ka maikaʻi o ka hao ductile ma mua o ka PVC?

Ma nā papahana ola o ke kūlanakauhale a me ke kūkulu ʻana i kahi pūnaewele lako wai nui, hoʻopilikia pololei ke koho ʻana i nā mea paipu i nā kumukūʻai hana a me ka mālama ʻana a me ka palekana o ka lako wai no nā makahiki he ʻumi e hiki mai ana. ʻO nā paipu PVC, ma muli o ko lākou māmā a me ke kūpaʻa i ka pala, he koho i kūkākūkā nui ʻia ma ka mākeke.

Eia nō naʻe, ke neʻe mākou ma ʻō aku o nā palena o "nā kumukūʻai kūʻai mua" a nānā i ka pilikia mai nā manaʻo o ke kū'ē ʻana i ke kaomi, ke kū'ē ʻana i ka ōlaʻi a me nā pōʻino, a me nā kumukūʻai holoʻokoʻa o ke ola, hōʻike nā paipu hao ductile i kahi pōmaikaʻi koʻikoʻi loa.

E kālailai hohonu kēia ʻatikala i nā kumu nui ʻelima no ke aha i ʻoi aku ai ka maikaʻi o nā paipu hao ductile ma mua o nā paipu PVC a e ʻimi pehea i hoʻokiʻekiʻe ai ʻo DINSEN, ma ke ʻano he mea hoʻolako paipu wai kiʻekiʻe, i nā pono kuʻuna o nā paipu hao ductile i nā kiʻekiʻe hou ma o nā hoʻonui ʻenehana.

He aha ka makaʻu nui loa no nā pūnaewele lako wai? Pahū nā paipu.

ʻO ke kaʻina ikaika hydrostatic lōʻihi o nā paipu PVC e hoʻoholo ai he maʻalahi lākou i ka haki ʻana ma lalo o nā loli nui o ke kaomi a i ʻole nā ​​​​hopena hāmare wai. ʻOi loa i nā wahi anuanu, ʻo ka brittleness haʻahaʻa o nā paipu PVC he palena koʻikoʻi i kā lākou noi.

Nā Pōmaikaʻi o nā paipu hao ductile: Loaʻa i nā paipu hao ductile ka ikaika tensile maikaʻi loa a me ka elongation (koi maʻamau ≥10%). ʻO ke ʻano kēia, ʻaʻole wale nā ​​​​paipu hao ductile he "paʻakikī," akā loaʻa iā ia ke ʻano o ka "lanakila ʻana i ka paʻakikī me ka maʻalahi." Hiki iā lākou ke omo pono i nā ukana dynamic mai ka ʻili alanui a me nā hopena hāmare wai, e pale ana i ka pahū ʻana o nā paipu.

• Kākoʻo ʻenehana DINSENNo nā hiʻohiʻona lako wai kiʻekiʻe,Nā paipu hao ductile a DINSENe hana i nā kaʻina hana annealing kikoʻī e hōʻoia i ka nui o ka spheroidization ma luna o 85% i loko o ke ʻano metallographic, e hāʻawi ana i nā paipu i ka ikaika o ke kila a me ka paʻakikī o ka hao.

Ua kanu hohonu ʻia nā pūnaewele paipu kūlanakauhale i lalo o ka honua, e kū nei i nā loli honua i hiki ʻole ke wānana ʻia.

Hoʻohana pinepine nā paipu PVC i nā pilina palupalu me nā apo laholio. ʻOiai he palupalu iki ko lākou, he haʻahaʻa ka modulus o ke kino paipu ponoʻī, e lilo ia i mea maʻalahi i ka deformation radial nui i ka wā o ka hoʻonohonoho ʻole ʻana, e alakaʻi ana i nā leaka ma nā hono a i ʻole ka paʻa ʻole o ka paipu.

Nā Pōmaikaʻi o nā Paipu Hao Ductile: Hoʻohana nā paipu DI i ka hui ʻano-T a i ʻole ka hui ʻano-K. ʻAe kēia hoʻolālā i kēlā me kēia hui e hoʻokuʻu i kahi 3-5 degere o ke kūlou ʻana i ka wā e hālāwai ai ka paipu me nā ōlaʻi a i ʻole ka neʻe ʻana o ka honua. Hoʻololi ke ʻano o ka paipu holoʻokoʻa me ke kūlou ʻana e like me ka "dragon underground" me ka ʻole o ka haki ʻana. ʻAʻole hiki ke hoʻohālikelike ʻia kēia pae o ka redundancy seismic e nā paipu PVC i hana ʻia me kahi mea hoʻokahi.

Eia kekahi, i loko o nā laina wai maka a me nā laina hoʻoili nui o DN300 a ma luna, he mea nui loa nā pono o nā paipu hao ductile me nā uhi o loko. ʻOiai he paia o loko laumania loa ko PVC,paipu hao ductile uhi simaHoʻomohala lākou i kahi papa calcification paʻa ma ko lākou paia o loko i ka hala ʻana o ka manawa, e hoʻomaʻemaʻe hou ana i ka ʻili.

ʻOi aku ka mea nui, hiki i nā paipu hao ductile ke kū i nā wikiwiki centrifuge kiʻekiʻe, e hōʻoiaʻiʻo ana i ka mānoanoa like o ka paia a pale i ka "flutter" a i ʻole "water hammer resonance" hiki ke hana me nā paipu PVC ma nā kahe kahe nui loa.

ʻOi aku ka maikaʻi o ka hao ductile ma mua o ka PVC?Ma ke ʻano he mau ʻenekinia loea ma DINSEN, hiki iā mākou ke hāʻawi i kahi pane paʻa: no nā laina hoʻolako wai koʻikoʻi i hoʻolālā ʻia no ka hoʻohana ʻana no nā makahiki he 50 a ʻoi, ʻo nā paipu hao ductile wale nō ka hopena makua e hoʻohui i ka ikaika waena a kiʻekiʻe, ka paʻakikī kiʻekiʻe, ke kū'ē ʻana i ka seismic, a me ka mālama haʻahaʻa. No ka lako wai palekana o ke kūlanakauhale, kohoNā paipu hao ductile DINSEN.