Ku pfariwa i ku sivela ku vupfa, naswona nsinya wa ku pfariwa ka valve wu tlhela wu dyondziwa kusuka eka ku sivela ku vupfa. Kuna swilo swotala leswi khumbhaka matirhelo ya sealing yati valve ta phaphatani, ngopfu-ngopfu ku katsa ni leswi landzelaka:
1. Xivumbeko xo pfalela
Ehansi ka ku cinca ka mahiselo kumbe matimba yo pfalela, xivumbeko xa mpatswa wo pfalela xi ta cinca. Ku tlula kwalaho, ku cinca loku ku ta khumba no cinca matimba exikarhi ka mimpatswa yo pfalela, xisweswo ku hunguta matirhelo ya ku pfariwa ka valve. Hikwalaho, loko u hlawula xisirhelelo, tiyiseka leswaku u hlawula xisirhelelo lexi nga ni ku onhaka ka elastic. Hi nkarhi lowu fanaka, tlhela u nyikela nyingiso eka ku enta ka vuandlalo byo pfalela. Xivangelo iku contact surface ya sealing pair ayi koti ku fambelanisa hiku hetiseka. Loko ku anama ka contact surface ya sealing surface ku engeteleka, matimba lawa ya lavekaka eka ku pfalela ya engeteleka.
2. Ntshikelelo wo karhi wa vuandlalo byo pfalela
Ntshikelelo wo karhi wa vuandlalo byo pfalela wu khumba matirhelo ya ku pfalela yavalve ya phaphatanina vutomi bya ntirho wa valve. Hikokwalaho, ntshikelelo wokarhi wa vuandlalo byo pfalela na wona i nchumu wa nkoka swinene. Ehansi ka swiyimo leswi fanaka, ntshikelelo wokarhi wale henhla swinene wuta vanga ku onhaka ka valve, kambe ntshikelelo wokarhi lowuntsongo swinene wuta endla leswaku valve yi vupfa. Hikwalaho, hi fanele hi kambisisa hi ku helela ku faneleka ka ntshikilelo wo karhi loko hi pulana.
3. Swihlawulekisi swa nyama swa xitirhisiwa
Swihlawulekisi swa physical swa medium switlhela swi khumba matirhelo ya sealing yavalve ya phaphatani. Swihlawulekisi leswi swa xiviri swikatsa mahiselo, viscosity, na hydrophilicity yale henhla, exikarhi ka swin’wana. Ku cinca ka mahiselo aswi khumbi ntsena ku olova ka pair yo pfalela xikan’we naku cinca ka vukulu bya swiphemu, kambe switlhela swiva na vuxaka lebyi nga hambanisiwiki na viscosity ya gasi. Viscosity ya gasi yi tlakuka kumbe yihunguteka loko mahiselo ya tlakuka kumbe kuhunguteka. Hikokwalaho, leswaku hita hunguta nkucetelo wa mahiselo eka matirhelo yo pfalela ya valve, loko hi dizayina pair yo pfalela, hifanele ku yi dizayina tani hi valve leyingana thermal compensation kufana na xitulu xa valve xa elastic. Viscosity yi fambelana na ku nghenelela ka mati. Loko ehansi ka swiyimo leswi fanaka, loko ku tsindziyela ku ri kukulu, vuswikoti byo nghena bya mati byi va byintsongo. Hydrophilicity yale henhla swivula leswaku loko kuri na film eka vuandlalo bya nsimbi, film yifanele ku susiwa. Hikwalaho ka filimi leyi yo olova swinene ya oyili, yita herisa hydrophilicity yale henhla, leswinga endla leswaku kuva na ku pfaleka ka ti fluid channels.
4. Khwalithi ya pair yo pfalela
Khwalithi ya sealing pair ngopfu ngopfu yivula leswaku hifanele ku kambela ku hlawuriwa, ku fambelanisa na ku pakanisa ka vumaki bya switirhisiwa. Xikombiso, valve disc yi fambelana kahle na valve seat sealing surface, leswinga antswisaka matirhelo ya sealing.
Ku khuluka ka ti valve swi tolovelekile swinene evuton’wini na le ka vuhumelerisi, leswi nga vangaka thyaka kumbe ku tisa khombo evuton’wini, ku fana na ku khuluka ka tivalvu ta mati ya le pompini, na switandzhaku swo tika, swo fana na chefu, leswi nga ni khombo, leswi nga pfurhaka, leswi pfurhaka na Ku vupfa ka swihangalasamahungu leswi onhaka, na swin’wana, i nxungeto lowukulu eka vuhlayiseki bya munhu hi xiyexe, vuhlayiseki bya nhundzu na timhangu ta ku thyakisa mbango. Hlawula ti seals leti faneleke kuya hi tindzhawu tohambana hambana naswona tirhisa swihlawulekisi.
Nkarhi wa poso: Aug-01-2022
