Imibhobho yesinyithi esenziwe ngentsimbiuvavanyo lokunamathela kunye novavanyo lokujika amanzi ashushu nabandayo ngokuhambelana ne-EN877, ngokuyintloko ukuvavanya ukuthembeka kwexesha elide kunye nokuqina kweenkqubo zabo zokugquma ezichasene nokugqwala, ngakumbi phantsi kweemeko zokusebenza zangempela. Olu vavanyo luhlala lujolise kwiingubo ezisetyenziswa kwiindawo zangaphakathi nangaphandle zemibhobho ye-SML (ezifana nee-epoxy resins, ii-polyurethanes, kunye nee-linings zesamente mortar). Uvavanyo lokunamathela lulinganisa ngokuthe ngqo amandla okubopha phakathi kwengubo kunye nesinyithi esisisiseko sombhobho wesinyithi. Uvavanyo lokujika amanzi ashushu nabandayo lulinganisa ukuguquguquka kobushushu obujikelezayo obufunyanwa yimibhobho ekusetyenzisweni kwayo, luvavanya uzinzo lwexesha elide lwenkqubo yokugquma phantsi kwezi ngcinezelo zobushushu ezitshintshanayo.
Uvavanyo lokuncamathela
Ukunamathela kwengubo kuya kuhlolwa kuphela kwiisampuli ezivela kwiimveliso ezigqityiweyo ngovavanyo olunqamlezileyo ngokwe-EN ISO 2409, ngale ndlela ilandelayo:
- isampuli yovavanyo: icandelo elincinci elisikiweyo eliyi-100 mm ubude elivela kumbhobho ogqunyiweyo okanye i-fitting ekhethwayo enobukhulu obuyi-DN 100 ubuncinane;
- inani lokusikwa: 6;
- isithuba seemicu: 2 mm (3 mm kwiingubo ezinobukhulu obuncinci obuchazwe ngumenzi obulingana okanye obungaphezulu kwe-120 µm);
- Iziphumo mazihambelane neTheyibhile 1.
Itheyibhile 1:
Ukuxhathisa ukujikeleza kobushushu
Uvavanyo kufuneka lwenziwe kuphela kwiisampuli ezivela kwiimveliso ezigqityiweyo. Ukuhlanganiswa kovavanyo kuya kwenziwa imijikelo eli-1500 yokudlula kwamanzi ashushu nabandayo ngokweshedyuli elandelayo:
a) (30 + 1) l yamanzi kubushushu obuyi (93 + 2) °C kwixesha eli-1 min, ngesantya esingaguqukiyo sokuhamba kwamanzi,
b) ixesha lokuphumla kunye nokukhupha amanzi lomzuzu o-1;
c)(30 + 1) ilitha yamanzi kubushushu obuyi (15 + 5)°C kwixesha eli-1 min, ngesantya esingaguqukiyo sokuhamba kwamanzi,
d) ixesha lokuphumla kunye nokukhupha amanzi eli-1 min
Ubushushu bamanzi buya kulinganiswa kwindawo yokungena.Umzekelo wokuseta uvavanyo oluqhelekileyo unikwe kuMfanekiso 3.
Emva kokumisa uvavanyo, imibhobho kunye nezixhobo kufuneka zihlanjwe ngoko nangoko ukuze kususwe nakuphi na ukubola. Emva koko imibhobho mayihlulwe ngobude kwaye upende lwangaphakathi luhlolwe ukuba lungakanani na olunamadyungudyungu kunye nokugqwala okungayi kudlula la manqanaba alandelayo:
Inqanaba lokudumba: Ubukhulu 3, udidi 3 ngokwe-EN IS0 4628-2:
Inqanaba lokugqwala: Ri 2 ngokwe-EN IS0 4628-3.
Ixesha lokuthumela: Agasti-04-2025
