Ngaba i-Ductile Iron ingcono kune-PVC?

Kwiiprojekthi zoncedo lwasezidolophini kunye nokwakhiwa kwenethiwekhi enkulu yokubonelela ngamanzi, ukukhethwa kwezinto zombhobho kuchaphazela ngokuthe ngqo iindleko zokusebenza nokugcinwa kunye nokhuseleko lokubonelela ngamanzi kangangeminyaka emininzi ezayo. Iimbhobho zePVC, ngenxa yokukhanya kwazo nokungangeni komhlwa, zazikhe zayinketho exoxwa kakhulu kwimarike.

Nangona kunjalo, xa sidlulela ngaphaya kwemida "yeendleko zokuqala zokuthenga" size sihlolisise umba ngokwembono yokumelana noxinzelelo, ukuxhathisa inyikima kunye neentlekele, kunye neendleko zomjikelo wobomi, imibhobho yesinyithi ethambileyo ibonisa inzuzo enkulu.

Eli nqaku liza kuhlalutya nzulu izizathu ezihlanu eziphambili zokuba kutheni imibhobho yesinyithi ethambileyo ingcono kunemibhobho yePVC kwaye lihlolisise indlela iDINSEN, njengomthengisi wemibhobho yamanzi okumgangatho ophezulu, ephakamise ngayo iingenelo zemveli zemibhobho yesinyithi ethambileyo ukuya kwiindawo ezintsha ngokuphucula ubuchwepheshe.

Yintoni eyona nto yoyikisayo kwiinethiwekhi zokuhambisa amanzi? Kuqhuma imibhobho.

I-hydrostatic strength curve yexesha elide yeepayipi ze-PVC imisela ukuba zinokuba nokuqhekeka okubuthathaka phantsi kokutshintshatshintsha okukhulu koxinzelelo okanye iziphumo ze-water hammer. Ingakumbi kwiindawo ezibandayo, ukuqhekeka okubuthathaka kweepayipi ze-PVC kubushushu obuphantsi ngumda omkhulu ekusetyenzisweni kwazo.

Iingenelo zeepayipi zentsimbi ezithambileyo: Iipayipi zentsimbi ezithambileyo zinamandla okutsalwa kunye nokwandiswa (imfuneko eqhelekileyo ≥10%). Oku kuthetha ukuba iipayipi zentsimbi ezithambileyo azikho nje "ziqinileyo" kuphela, kodwa zikwanazo neempawu "zokoyisa ubulukhuni ngokuguquguquka." Ziyakwazi ukufunxa ngempumelelo imithwalo enamandla ukusuka kumphezulu wendlela kunye neempembelelo zehammer yamanzi, zithintele ukugqabhuka kweepayipi.

• Inkxaso yoBugcisa beDINSEN: Kwiimeko zobonelelo lwamanzi olunoxinzelelo oluphezulu,Imibhobho yesinyithi ethambileyo yeDINSENbadlule kwiinkqubo ezichanekileyo zokuqhoboshela ukuqinisekisa izinga lokufakelwa kwe-spheroid elingaphezulu kwe-85% kwisakhiwo se-metallographic, nto leyo enika imibhobho amandla entsimbi kunye nokuqina kwentsimbi.

Iinethiwekhi zemibhobho zasezidolophini zigqunywe nzulu ngaphantsi komhlaba, zijongene notshintsho olungalindelekanga lwejoloji.

Iipayipi zePVC zihlala zisebenzisa uqhagamshelo oluguquguqukayo oluneendandatho zerabha. Nangona zinokuguquguquka okuthile, umzimba wepayipi ngokwawo unemodulus ephantsi, nto leyo eyenza ukuba ithambekele ekuguqukeni kwemitha ngexesha lokungalingani, nto leyo ekhokelela ekuvuza kwiindawo ezidibeneyo okanye ekungazinzini kwepayipi.

Iingenelo zeeDuctile Iron Pipes: Iipayipi ze-DI zisebenzisa i-T-type joint okanye i-K-type joint. Olu yilo luvumela i-joint nganye ukuba ikhulule malunga ne-3-5 degrees of curvature xa i-pipe idibana neenyikima okanye ukufuduka komhlaba. Lonke i-pipe liyajika ngokugoba njenge "dragon engaphantsi komhlaba" ngaphandle kokuqhekeka. Eli nqanaba lokuphindaphindeka kwe-seismic alinakuthelekiswa neepayipi ze-PVC ezenziwe ngento enye.

Ngaphezu koko, kwimigca emikhulu yamanzi aluhlaza kunye neetransmission trunk ze-DN300 nangaphezulu, iingenelo zemibhobho yesinyithi ethambileyo enezikhonkwane zangaphakathi zibaluleke kakhulu. Nangona i-PVC inodonga lwangaphakathi olugudileyo kakhulu,i-lining yesamente eyenziwe ngesamentebaphuhlisa umaleko ozinzileyo we-calcification eludongeni lwabo lwangaphakathi ngokuhamba kwexesha, nto leyo elungisa umphezulu ngakumbi.

Okubaluleke ngakumbi, imibhobho yesinyithi ethambileyo inokumelana nesantya esiphezulu se-centrifuge, iqinisekisa ubukhulu bodonga obufanayo kwaye ithintele "ukugungqa" okanye "ukuvakala kwe-water hammer" okunokwenzeka kwimibhobho yePVC ngamanani okuhamba kwamanzi amaninzi.

Ngaba isinyithi esithambileyo singcono kunePVC?Njengeenjineli zobugcisa eDINSEN, singanika impendulo ecacileyo: kwimigca yokuhambisa amanzi ephambili ecwangciselwe ukusetyenziswa iminyaka engaphezu kwama-50, imibhobho yentsimbi ethambileyo kuphela kwesisombululo esivuthiweyo esidibanisa amandla aphakathi ukuya kwaphezulu, ukuqina okuphezulu, ukumelana nokunyikima komhlaba, kunye nokugcinwa okuncinci. Ukuze ufumane amanzi akhuselekileyo ezidolophini, khethaImibhobho yentsimbi ye-DINSEN ductile.