l I-valve yenaliti iwuhlobo lwe-valve eguquguqukayo, esetshenziswa kabanzi, njengokusika ibanga lokusika ilangabi, kanye ne-knob yokulungisa izinga lokushisa lomlilo i-valve yenaliti. I-valve yenaliti iyingxenye ebalulekile yesistimu yepayipi yokukala insimbi, ehlanganisa ikakhulukazi i-valve yeglobhu kanye ne-valve yebhola. Umsebenzi wawo ukuvula noma ukunqamula ipayipi. I-needle valve spool iyikhoni ebukhali kakhulu, njengenaliti efakwe esihlalweni, yingakho igama.
l I-valve yokumisa, eyaziwa nangokuthi i-valve yokuvala, iyi-valve yokuvala ephoqelekile, ngakho-ke lapho i-valve ivaliwe, ukucindezela kufanele kufakwe ku-disc ukuvimbela ukuvuza kwendawo yokuvala ngempoqo. Lapho i-medium ingena ku-valve isuka ngaphansi kwe-valve disc, ukumelana okufanele kunqotshwe amandla okusebenza kuwukungqubuzana phakathi kwesiqu nokupakisha kanye nokucindezela okukhiqizwa ukucindezela kwendawo. Amandla okuvala i-valve makhulu kunalawo okuvula i-valve, ngakho ububanzi besiqu kufanele bube bukhulu, ngaphandle kwalokho isiqu sizogoba.
l Izinyathelo zokuphepha zokufaka
1. Indawo yokufaka, ubude kanye nesiqondiso se-inlet ne-outlet kumele kuhlangabezane nezidingo zokuklama. Isiqondiso sokugeleza okuphakathi kufanele sihambisane nesiqondiso somcibisholo omakwe emzimbeni wevalvu, futhi ukuxhuma kuzoqina futhi kuqine.
2. Ivalvu kufanele ihlolwe ngokubonakalayo ngaphambi kokufakwa, futhi ipuleti legama levalvu kufanele lihambisane nezinhlinzeko zendinganiso kazwelonke yamanje “amamaki ama-valve avamile” GB 12220. Ngevalvu enengcindezi yokusebenza engaphezu kuka-1.0 MPa nomsebenzi wokusika epayipini elikhulu, ukuhlolwa kwamandla nokuqina kuyokwenziwa ngaphambi kokufakwa, futhi ivalvu ingasetshenziswa kuphela ngemva kokuba isifanelekile. Ngesikhathi sokuhlolwa kwamandla, ingcindezi yokuhlola izoba izikhathi ezingu-1.5 zokucindezela okulinganiselwe, ubude besikhathi ngeke bube ngaphansi kwe-5min, futhi igobolondo le-valve nokupakisha kuzofaneleka uma kungekho ukuvuza. Ngesikhathi sokuhlolwa kokuqina, ingcindezi yokuhlola iyizikhathi ezingu-1.1 zengcindezi encane, futhi ubude besikhathi sokuhlola buhlangabezana nezidingo ze-GB 50243.
Isikhathi sokuthumela: Sep-15-2021