Ukwethulwa kwezinto ze-valve zokususa usawoti emanzini olwandle

Eminyakeni yamuva nje, ngokuthuthuka kwezinga lokuphila kwabantu kanye nokuthuthukiswa kwezimboni, ukusetshenziswa kwamanzi ahlanzekile kuye kwanda unyaka nonyaka.Ukuze kuxazululwe inkinga yamanzi, imiklamo eminingi emikhulu yokukhipha usawoti emanzini isakhiwa kanzima ezweni.Enqubweni yokukhipha usawoti emanzini olwandle, ukunaka okukhethekile kufanele kukhokhwe ekugxumeni kwe-chloride kumishini.Ivalvuizinkinga zezinto ezibonakalayo zivame ukwenzeka ezingxenyeni zokugeleza.Njengamanje, izinto eziyinhloko ze-valve yokukhipha usawoti emanzini olwandle yithusi le-nickel-aluminium, insimbi engagqwali, insimbi engagqwali e-duplex kanye ne-ductile iron + coating yensimbi.

I-Nickel Aluminium Bronze

Ithusi le-nickel-aluminium linokumelana okuhle kakhulu nokucindezela ukugqwala kokuqhekeka, ukugqwala kokukhathala, ukugqwala kwe-cavitation, ukumelana nokuguguleka kanye nokungcoliswa kwezinto zasolwandle.Uma kuqhathaniswa nensimbi engagqwali emanzini olwandle aqukethe i-3% NaCI, i-nickel-aluminium bronze alloy inokumelana okuhle kakhulu nomonakalo we-cavitation.Ukugqwala kwethusi le-nickel aluminium emanzini olwandle kushaya ukugqwala nokugqwala kwe-crevice.Ithusi le-nickel-aluminium liyazwela esivinini samanzi olwandle, futhi lapho isivinini sidlula isivinini esibucayi, izinga lokugqwala likhuphuka kakhulu.

Insimbi engagqwali

Ukumelana nokugqwala kwensimbi engagqwali kuyehluka ngokuya ngamakhemikhali wento.I-304 insimbi engagqwali imelana nokugqwala komgodi kanye nokugqwala okuqhekeka endaweni yamanzi equkethe ama-chloride, futhi ayikwazi ukusetshenziswa njengengxenye yokugeleza emanzini olwandle.I-316L iyinsimbi engagqwali ye-austenitic equkethe i-molybdenum, ekwazi ukumelana kangcono nokugqwala okuvamile, ukugqwala kwe-pitting kanye nokugqwala.

I-Ductile Iron

Ukuze kuncishiswe izindleko zephrojekthi, umzimba we-valve usebenzisa i-ductile iron lining EPDM, futhi i-valve disc ithatha i-ductile iron lining anti-corrosion coating.

(1) I-Ductile iron lining Halar

I-Halar iyi-copolymer eshintshanayo ye-ethylene ne-chlorotrifluoroethylene, i-semi-crystalline futhi i-fluoropolymer ecutshungulwa encibilika.Inokumelana nokugqwala okuhle kumakhemikhali amaningi e-organic kanye ne-organic kanye nezincibilikisi zemvelo.

(2) I-Ductile iron lining Inayiloni11

I-Nylon11 iyi-thermoplastic kanye ne-plant-based coating, engavimbela ukukhula nokukhula kwesikhunta.Ngemva kweminyaka engu-10 yokuhlolwa kokucwiliswa kwamanzi kasawoti, insimbi engaphansi ayinazo izimpawu zokugqwala.Ukuze kuqinisekiswe ukuqina kokunamathela nokunamathela okuhle, izinga lokushisa lokusetshenziswa kweNylon11 akufanele lidlule i-100 ℃ uma lisetshenziswa embotsheni yepuleti levemvane.Lapho i-circular medium iqukethe izinhlayiya ezilimazayo noma imisebenzi yokushintsha njalo, akufanelekile ukusebenzisa i-coating.Ngaphezu kwalokho, ukumboza kufanele kuvinjwe ukuthi kukhishwe futhi kukhishwe ngesikhathi sokuthutha nokufakwa.