Ukuhlaziywa Kwenqubo Nokusebenza Kwe-Ductile Iron Gully Gratings

Njengengxenye eyinhloko yezinhlelo zokukhipha amanzi zikamasipala, imisele yensimbi ethambile ithola ukusebenza kwayo okuhle kakhulu ezinqubweni zokukhiqiza ezinembile kanye nokwenza ngcono izinto. Uma kuqhathaniswa nama-grating ajwayelekile ensimbi ephonswe, avame ukuba buthakathaka futhi angamelani nokugqwala kahle, insimbi ephonswe nge-ductile idlula ekwelashweni okukhethekile okuningi ukuze kufezwe ukuthuthukiswa okuphindwe kabili kokuqina kwezinto kanye nokuqina kwesakhiwo. Ibonisa izinzuzo ezingenakuphikwa ezimweni eziyinkimbinkimbi njengezingxenye zethrafikhi ezisindayo kanye nezimo ezinomswakama ophezulu, ezinosawoti omningi, okwenza kube ukukhetha okujwayelekile kobunjiniyela bomasipala bamanje.

Ngokuphathelene nezinqubo, umongo usekuhlanganisweni okusebenzisanayo kokwelashwa kwe-spheroidization kanye nokwelashwa nge-inculation. Esigabeni sokuqala sokukhiqizwa, izinto zokusetshenziswa ezifana nensimbi yengulube kanye nensimbi eqoshiwe zifakwa esithandweni sokungenisa imvamisa ephakathi nendawo ngokulingana futhi zishiswe ku-1400-1450°C ukuze kuncibilike ngokuphelele. Phakathi nalesi sikhathi, kusetshenziswa i-spectral analyzer ukuqapha ukwakheka kwensimbi encibilikisiwe ngesikhathi sangempela ukuqinisekisa ukuthi okuqukethwe yikhabhoni ne-silicon kuyahlangabezana nezindinganiso. Ngemva kwalokho, i-magnesium alloy engu-0.03%-0.05% noma i-rare earth alloy yengezwa ensimbini encibilikisiwe njenge-spheroidizing agent. Ngokuxubha ngomshini, i-graphite eyayinomumo we-flake ekuqaleni iguqulwa ibe yisimo esiyindilinga. Le nqubo ingandisa amandla okudonsa ensimbi ecibilikisiwe izikhathi ezingu-2-3. Ukuze kuthuthukiswe izinhlayiya ze-graphite futhi kuncishiswe amaphutha esakhiwo, i-ferrosilicon alloy engu-1.2%-1.5% ingezwa ngokushesha njenge-inculation ukuqinisekisa isakhiwo sangaphakathi esifanayo se-castings.

Isigaba sokubumba ikakhulukazi sisebenzisa izinqubo zokubumba isihlabathi noma izinqubo zokubumba igwebu ezilahlekile. Phakathi kwazo, ukubumba igwebu okulahlekile kungafeza ukubumba kanye, kugweme ukuphambuka kokuvala ibhokisi kokubumba isihlabathi kwendabuko, futhi kuqinisekiswe ukuthi iphutha lokuvuleka kwe-grating lilawulwa ngaphakathi kwe-±1mm ukuqinisekisa ukuphuma kwamanzi okubushelelezi. Ngemva kokuthi ukubumba sekupholile, kudingeka kuqhunyiswe ngesibhamu kanye nokususwa kokugqwala ukuze kususwe isikali se-oxide engaphezulu, bese kukhethwa izinqubo zokulwa nokugqwala ngokwesimo sesicelo: i-hot-dip galvanizing ivame ukusetshenziswa emigwaqweni kamasipala; ukumbozwa kwe-epoxy resin kukhethwa emapaki ezimboni amakhemikhali noma ezindaweni ezisogwini; ukumbozwa kwe-spray kungakhethwa nasezindaweni zokuhlala, okunikeza imibala ecebile nezindleko eziphansi. Ngaphezu kwalokho, ukuze kuhlangatshezwane nezidingo zokulwa nokwebiwa, eminye imikhiqizo inezinhlaka zensimbi ezigobile ezifakwe emaphethelweni ama-grating futhi ixhunywe esisekelweni se-manhole ngama-bolts akhethekile okulwa nokwebiwa ukuze kuvinjelwe ukuhlukaniswa okungekho emthethweni.

Ngokusebenza kahle, ukusekelwa kwenqubo ye-spheroidization kuvumele ukwenyuka kwekhwalithi kumkhiqizo. Ngokuphathelene namandla nokuqina, amandla ayo okudonsa angafinyelela ku-420-500MPa, amandla okukhiqiza abe ngu-≥300MPa, kanye nokuqina komthelela kube ngu-≥15J/cm², okuphindwe kathathu kuya kahlanu kunensimbi evamile empunga. Ngokuvumelana ne-GB/T23858-2009 ejwayelekile kazwelonke, amazinga ayo okuthwala umthwalo amboza u-A15 kuya ku-F900. Phakathi kwazo, imikhiqizo yebanga le-D400 ingamelana kalula nokugingqika okuphindaphindiwe kwamaloli asindayo angaphezu kwamathani angu-40 ngaphandle kwengozi yokuphuka noma ukuguquka ngesikhathi sokusetshenziswa kwesikhathi eside.​

Ukumelana nokugqwala nokuqina kugqame kakhulu. Ngemva kokwelashwa okujwayelekile kokulwa nokugqwala, impilo yesevisi ezindaweni ezivamile zikamasipala ingafinyelela eminyakeni engama-20-30, okungaphezu kokuphindwe kabili kwe-cast evamile. izinsimbi zensimbiEzindaweni ezisogwini ezinenkungu eningi kasawoti, ukugqoka kwe-epoxy resin kunganciphisa izinga lokugqwala ngamaphesenti angaphezu kuka-80, kanti izindleko zokulungisa zonyaka ziyi-1/5 kuphela yemikhiqizo yendabuko.

Ukusebenza kokukhipha amanzi kanye nokuhlunga kuthuthukiswa ngokuklama: ububanzi begridi ngokuvamile bungu-20-30mm, kanti isikhala singu-10-15mm, ngesilinganiso sokugeleza kwamanzi esingu-0.5-1.2m³/s. Ngaphansi kwesiphepho semvula esinamandla angu-50mm ngehora, singakhipha amanzi emvula ebusweni bomgwaqo ngokushesha futhi sigweme ukunqwabelana kwamanzi. Ngesikhathi esifanayo, isakhiwo segridi singavimba ngempumelelo imfucumfucu enobubanzi obungu-≥10mm ukuvimbela ukuvaleka kwamapayipi okukhipha amanzi angaphansi komhlaba. Ngaphezu kwalokho, ubuso bomkhiqizo busebenzisa ukwakheka kokuthungwa okunjengedayimane okungasheleli, futhi imiphetho iyindilinga. Njengoba ine-coefficient engasheleli engu-≥0.7, ingavimbela ngempumelelo abahamba ngezinyawo ukuthi bangasheleli ngisho nangezinsuku zemvula, inikeze iziqinisekiso zokuphepha eziphelele zokusetshenziswa.​

Ukuhlanganiswa okujulile kwezinqubo ezithuthukisiwe kanye nokusebenza okuhle kakhulu kwenza imisele yensimbi ethambile hhayi nje kuphela ukuhlangabezana nezidingo eziyisisekelo zokudonsa amanzi kamasipala kodwa futhi nokuzivumelanisa nezidingo ezikhethekile zezimo ezahlukene. Kunikeza isiqinisekiso esiqinile sokusebenza okuzinzile kwezinhlelo zokudonsa amanzi zasemadolobheni futhi kusiza ekuthuthukiseni ukuqina nokuphepha kwengqalasizinda yasemadolobheni.