ʻO ka hoʻolauna ʻana i nā mea valve no ka desalination o ke kai

I nā makahiki i hala iho nei, me ka hoʻomaikaʻi ʻana o ka nohona o nā kānaka a me ka hoʻomohala ʻana i nā ʻoihana, ua hoʻonui ʻia ka hoʻohana ʻana i ka wai hou i kēlā me kēia makahiki.I mea e hoʻoponopono ai i ka pilikia wai, nui nā papahana desalination nui i hana ʻia ma ka ʻāina.I ke kaʻina hana o ka desalination o ke kai, pono e nānā pono i ka corrosion o ka chloride i nā mea hana.Valvehiki pinepine mai nā pilikia waiwai ma nā ʻāpana kahe.I kēia manawa, ʻo nā mea nui o ka mea valve no ka desalination o ke kai he keleawe nickel-aluminum, stainless steel, duplex stainless steel a me ka ductile iron + metal coating.

Bronze Aluminum Nikela

ʻO ke keleawe nickel-aluminum he kūpaʻa maikaʻi loa i ke koʻikoʻi i ka ʻinoʻino ʻana, ka ʻinoʻino luhi, ka ʻinoʻino cavitation, ke kūpaʻa erosion a me ka hoʻoheheʻe ʻana i nā meaola kai.Ke hoʻohālikelike ʻia me ke kila kila i loko o ka wai kai i loaʻa ka 3% NaCI, nickel-aluminum bronze alloy he kūpaʻa maikaʻi loa i ka pōʻino cavitation.ʻO ka ʻinoʻino o ke keleawe alumina nickel i loko o ka wai kai e hoʻoheheʻe ʻia ana a me ka ʻinoʻino.Pilikia ke keleawe nickel-aluminum i ka velocity o ke kai, a ke oi ka velocity i ka velocity ko'iko'i, pi'i nui ka corrosion rate.

Kila kohu ʻole

ʻOkoʻa ka pale ʻana o ke kila kila me ka hoʻohui kemika o ka mea.ʻAʻole hiki ke hoʻohana ʻia ʻo 304 stainless steel i ka hoʻoheheʻe ʻana a me ka pohā i loko o kahi wai i loaʻa nā chlorides, a ʻaʻole hiki ke hoʻohana ʻia ma ke ʻano he mea kahe i loko o ke kai.ʻO 316L he kila kila austenitic i loaʻa i ka molybdenum, ʻoi aku ka maikaʻi o ke kūʻē ʻana i ka ʻino maʻamau, ka ʻāʻī ʻana a me ka ʻinoʻino.

ʻO ka hao hao

I mea e hōʻemi ai i ke kumukūʻai o ka papahana, hoʻohana ke kino valve i ka ductile iron lining EPDM, a ʻo ka valve disc e lawe i ka ductile iron lining anti-corrosion coating.

(1) Lining hao Halar

ʻO Halar kahi copolymer o ka ethylene a me ka chlorotrifluoroethylene, he fluoropolymer semi-crystalline a hoʻoheheʻe ʻia.Loaʻa iā ia ke kūpaʻa corrosion maikaʻi i ka hapa nui o nā kemika organik a me nā mea hoʻoheheʻe organik.

(2) Lining hao malū Nylon11

ʻO ka Nylon11 kahi uhi thermoplastic a me nā mea kanu, hiki ke pale i ka ulu a me ka ulu ʻana o nā haʻi.Ma hope o 10 mau makahiki o ka hoʻāʻo ʻana i ka wai paʻakai, ʻaʻohe hōʻailona o ka ʻino o ka metala lalo.I mea e hōʻoia ai i ka paʻa o ka uhi a me ka hoʻopili maikaʻi ʻana, ʻaʻole pono ka mahana hoʻohana o Nylon11 ma mua o 100 ℃ i ka wā e hoʻohana ʻia ai i ka uhi ʻana o ka papa butterfly.Ke loaʻa i ka mea hoʻopulapula nā ʻāpana abrasive a i ʻole nā ​​​​hana hoʻololi pinepine, ʻaʻole kūpono ke hoʻohana i ka uhi.Eia kekahi, pono e pale ʻia ka uhi ʻana mai ka ʻoki ʻana a me ka ʻili ʻana i ka wā o ka lawe ʻana a me ke kau ʻana.