palapala noi

ʻO ka paipu corrugated pā pālua he ʻano paipu hou, me ke kaumaha māmā, ikaika kiʻekiʻe, hana maʻalahi, mālama waiwai a me nā pono ʻē aʻe.Ke hoʻohālikelike ʻia me ka ikaika like o ka paipu paia māmā, hiki iā ia ke mālama i kahi 40% o ka mea maka, hoʻohana nui ʻia i ke kamaʻilio optical cable sheath, ke kūkulu ʻana i ka wai, ka hoʻoheheʻe kūlanakauhale, ka ʻāina mahiʻai haʻahaʻa haʻahaʻa irrigation a me nā māla ʻē aʻe.I kēia mau makahiki i hala iho nei, ua hoʻonui nui ʻia ka noi ʻana o nā bellows pālua, ma ke kahua o ka casing kelepona kamaʻilio, ua hoʻololi maoli i ka paipu sima.Ke hoʻohālikelike ʻia me nā paipu plastik ʻē aʻe, ʻo kāna ʻai ka mea nui loa.Ma ke kahua o ke kūkulu ʻana i ka wai, ma muli o kāna hana insulation leo he ʻilihune iki, i ka manawa like, ʻaʻole lawa ka hoʻomohala ʻana o nā paipu paipu, no laila ʻaʻole nui ka nui.Eia nō naʻe, ma ka hoʻoheheʻe ʻana o ke kūlanakauhale a me ka hale hana, ʻoi aku ka nui o ka hoʻohana ʻana i nā bellow pā lua i kanu ʻia.ʻO ka hoʻohana ʻana i ka paipu corrugated pā pālua i hoʻohālikelike ʻia me nā kikoʻī like o ke kumu kūʻai o ka paipu paʻa māmā, hiki ke hoʻopau ʻia ke kaʻina hana 5 ~ 10 mau manawa.

Ua hoʻomaka ʻo Kina e hoʻolauna i ka hana ʻana o kēia ʻano paipu mai ka makahiki 1990, ʻo ka mua ma mua o ka nui liʻiliʻi liʻiliʻi o φ 110 a i ʻole ka liʻiliʻi, ʻo ka mea maka ka PVC, ka mea i hoʻohana nui ʻia e like me ka casing kelepona.I nā makahiki i hala iho nei, ua ulu mālie nā bellows pālua i ke anawaena nui.I kēia manawa, hiki ke φ 1200 ka nui o nā bellows home. Hoʻomohala ʻia nā mea maka i hoʻohana ʻia mai MAINLY PVC a PE, PP a pēlā aku.Ua ulu pū nā mea hana laina Bellows mai ka wā ʻōpio.I kēia manawa, hiki i nā hale hana lako hale ke hana i ka laina hana bellows me ke anawaena a hiki i 1200mm.

ʻEkolu ʻano thermoplastics i hoʻohana ʻia i nā paipu hoʻoheheʻe i kanu ʻia: POLYvinyl chloride, polyethylene a me polypropylene.ʻO ka modulus elastic E o nā mea ʻekolu (e like me PREN13476-1):

ʻIke loa, ʻo POLYvinyl chloride ka mea kiʻekiʻe loa, a ukali ʻia e ka polypropylene a me ka polyethylene ka haʻahaʻa.Ma muli o ka ʻoi aku o ka modulus elastic E o POLYvinyl chloride ma mua o ka polyolefin, hiki ke hoʻokō ʻia ka ʻoʻoleʻa apo like me ka manawa liʻiliʻi o ka inertia I. Inā hoʻohana ʻoe i ka hoʻolālā nalu like hiki iā ʻoe ke hoʻohana i ka mānoanoa pā liʻiliʻi.I kekahi laulā o PVC papalua – paia bellows i ka waiwai waiwai, no laila, i loko o ke kula o kanu drainage paipu PVC papalua – paia bellows i loko o ka mua noi no hoi ka nui loa.I nā makahiki i hala iho nei, ua ulu wikiwiki nā bellows pālua polyolefin, no kēia mau kumu:

ʻAʻole maikaʻi ka wai a me ke kūpaʻa wela o nā mea PVC, no laila paʻakikī ke hana ʻana i ka paipu paia o ke anawaena.(I kēia manawa, ʻoi aku ka liʻiliʻi o 500mm ka nui o ke anawaena o ka PVC pālua-pā ma nā mākeke ʻē. nā anawaena (i hōʻike ʻia a hiki i 1800 mm).

No ka mea, ʻaʻohe ʻike loea i kēia ʻano i ka wā e hoʻomaka ai ka hoʻomohala ʻana i ka hale i kanu ʻia, hilinaʻi nui ʻia i ka ʻoihana e ʻimi no kekahi mau alahele.

No ka laʻana, ua hoʻohana ka hana mua o ka polyethylene pālua-pā ʻia i ka PE80 kiʻekiʻe kiʻekiʻe polyethylene mea kūpono no nā paipu kinoea.ʻO kēia mea i mea e hōʻoia ai i ka maʻalahi o ka paipu kinoea, ʻoi aku ka haʻahaʻa o ka molecular paona, ʻoi aku ka haʻahaʻa o ka modulus elastic (ma lalo o 800Mpa), i hoʻohana ʻia i ka hana ʻana i nā bellows pālua-pā pinepine ʻaʻole hiki ke hōʻea i ka stiffness apo koi, loaʻa. e hoʻonui i ka mānoanoa o ka pā, maopopo ʻaʻole waiwai.I ka 2003, sinopec yanhua hui i alakai i ka hooulu ana i ka 6360M kiʻekiʻe density polyethylene HDPE palua paia corrugated paipu mea no ke kanuʻia i loko o Kina e like me nā koi o nā mea hoʻohana, kahakiʻi ma luna o ka 'ike o ka haole ulu no na makahiki he nui a e like me na koi o ka honua. nā kūlana kiʻekiʻe.Hoʻohana ka 6360M polymerization i ka ʻenehana hana kiʻekiʻe kiʻekiʻe, no laila ua loaʻa i ka mea kūikawā kahi ʻano kaulahao molecular kūikawā, modulus elastic kiʻekiʻe a i ka manawa like e hōʻoia ai i ke kūʻē maikaʻi ʻana, ka hopena hopena a me nā waiwai ʻē aʻe.Ma hope o kēlā, ua hoʻomohala ʻo Yanhua i nā mea kūikawā 7000 no ka paipu hoʻoheheʻe i kanu ʻia i kūpono no nā bellows pālua polyethylene nui-diameter.

ʻO QHE16A/B, he resin kūikawā no nā bellow pā pālua HDPE nui i hoʻomohala ʻia e Qilu Petrochemical Research Institute a me ka hale hana palaki, ua ʻike ʻia e nā mea hana bellows nui a ua lilo ʻo ia i hoʻokahi o nā HDPE nui mua loa a kūleʻa. ʻO nā bellows lua-wall resin kūikawā i kūkulu ʻia ma Kina.Hoʻohana kēia mea kūikawā i kahi ʻano hou o ka S-type catalyst, loaʻa kahi hoʻolālā ʻenehana piha, a he ikaika hoʻoheheʻe kiʻekiʻe, modulus bending a me ka paʻa wela.ʻO ka pipe corrugated corrugated pipe nui-caliber i hana ʻia me kēia mea kūikawā, he flaring maikaʻi, ʻoʻoleʻa apo a me ka hana anti-kahiko, i hoʻohālikelike ʻia i ka hana piha o nā mea i lawe ʻia mai, a hiki ke hoʻokō i nā koi hana o ka pā pālua pālua. paipu corrugated o nā laina hana hale like ʻole.