I-valve yesango iyivalvu lapho ilungu elivalayo (isango) lihamba libheke phezulu emgqeni omaphakathi wesiteshi.I-valve yesango ingasetshenziswa kuphela ukuvula ngokugcwele nokuvala ngokugcwele epayipini, futhi ayikwazi ukusetshenziselwa ukulungiswa nokudonsa.I-valve yesango iyi-valve enezinhlobonhlobo zezicelo.Ngokuvamile, isetshenziselwa ukusika amadivaysi nge-diameter ye-DN ≥ 50mm, futhi ngezinye izikhathi ama-valve esango nawo asetshenziselwa ukusika amadivaysi anamadayimitha amancane.
Ingxenye yokuvula nokuvala ye-valve yesango yisango, futhi isiqondiso sokunyakaza kwesango sibhekene nesiqondiso soketshezi.I-valve yesango ingavulwa ngokugcwele futhi ivalwe ngokugcwele, futhi ayikwazi ukulungiswa noma ukucindezelwa.Isango linezindawo ezimbili zokuvala.Izindawo ezimbili zokuvala zevalvu yesango yephethini evame ukusetshenziswa kakhulu zakha umumo we-wedge.I-engeli ye-wedge iyahlukahluka nemingcele yevalvu, ngokuvamile engu-50, no-2°52' lapho izinga lokushisa elimaphakathi lingekho phezulu.Isango le-valve yesango le-wedge lingenziwa libe liphelele, elibizwa ngokuthi isango eliqinile;kungenziwa futhi isango elingakhiqiza inani elincane lokuguqulwa ukuze kuthuthukiswe ukwenziwa kwalo futhi kunxephezele ukuphambuka kwe-angle yokuvala uphawu ngesikhathi sokucubungula.Ipuleti libizwa ngokuthi isango elinwebekayo.I-valve yesango iyisisetshenziswa esiyinhloko sokulawula ukugeleza noma ukudluliswa kwevolumu yempushana, impahla yokusanhlamvu, i-granular material kanye nesiqephu esincane sempahla.Isetshenziswa kabanzi kwezensimbi, izimayini, izinto zokwakha, okusanhlamvu, imboni yamakhemikhali nezinye izimboni ukulawula ukuguquka kokugeleza noma ukunqanyulwa ngokushesha.
Ama-valve esango abhekisela ngokukhethekile ezinhlotsheni zama-valve esango lensimbi, angahlukaniswa abe ama-valve esango eliwunqenqema, ama-valve esango ahambisanayo, nama-valve esango le-wedge ngokuya ngokumiswa kwendawo yokuvala.I-valve yesango ingahlukaniswa: uhlobo lwesango elilodwa, uhlobo lwesango eliphindwe kabili kanye nohlobo lwesango lokunwebeka;i-valve yesango elihambisanayo ingahlukaniswa ngohlobo olulodwa lwesango kanye nohlobo lwesango eliphindwe kabili.Ngokusho kokuma kwentambo yesiqu se-valve, ingahlukaniswa ngezinhlobo ezimbili: i-valve yesango ye-stem ekhuphukayo kanye ne-valve yesango ye-stem engaphumi.
Lapho i-valve yesango ivaliwe, indawo yokuvala ingavalwa kuphela ngokucindezela okuphakathi, okungukuthi, ukuncika ekucindezelweni okuphakathi ukuze ucindezele indawo yokuvala yepuleti lesango esihlalweni se-valve ngakolunye uhlangothi ukuze kuqinisekiswe ukuvala indawo yokuvala, okuzivala yona.Iningi le-valve yesango liphoqelelwa uphawu, okusho ukuthi, lapho i-valve ivaliwe, isango kufanele licindezelwe esihlalweni se-valve ngamandla angaphandle, ukuze kuqinisekiswe ukubekwa uphawu kwendawo yokuvala.
Isango le-valve yesango lihamba ngomugqa oqondile nesiqu se-valve, ebizwa ngokuthi i-valve yesango le-stem eliphakamisayo (ebizwa nangokuthi i-rising stem gate valvu).Ngokuvamile kukhona intambo ye-trapezoidal ku-lifter, futhi ngokusebenzisa nati phezulu kwe-valve kanye ne-groove eqondisayo emzimbeni we-valve, ukunyakaza okujikelezayo kuguqulwa kube ukunyakaza komugqa oqondile, okusho ukuthi, i-torque yokusebenza iyashintshwa. ekuhlohleni ukusebenza.
Lapho i-valve ivuliwe, lapho ukuphakama kokuphakama kwepuleti lesango lilingana no-1: 1 izikhathi ububanzi be-valve, ukudlula koketshezi kuvuliwe ngokuphelele, kodwa lesi sikhundla asikwazi ukuqapha ngesikhathi sokusebenza.Ekusetshenzisweni kwangempela, i-apex ye-valve stem isetshenziswa njengophawu, okungukuthi, indawo lapho isiqu se-valve singanyakazi sithathwa njengendawo yaso evuleke ngokugcwele.Ukuze ucabangele isenzakalo sokukhiya ngenxa yokuguquka kwezinga lokushisa, ngokuvamile kuvulwa endaweni ephezulu, bese ubuyela emuva 1/2-1 ukuphenduka, njenge-valve evuleke ngokugcwele.Ngakho-ke, indawo evulekile ngokugcwele ye-valve inqunywa indawo yesango (okungukuthi, ukushaywa).
Kwamanye ama-valve esango, i-stem nut isethwe epuleti lesango, futhi ukuzungezisa kwesondo lesandla kushayela isiqu se-valve ukuze sizungeze, futhi ipuleti lesango liyaphakanyiswa.Lolu hlobo lwe-valve lubizwa ngokuthi i-rotary stem gate valve noma i-valve yesango elimnyama.
Izici ze-Gate Valve
1. Isisindo esilula: umzimba oyinhloko wenziwe ngensimbi emnyama ye-nodular yezinga eliphezulu, cishe ngo-20% ~ 30% elula kunama-valve amasango endabuko, futhi kulula ukuyifaka nokuyigcina.
2. Iphansi le-valve yesango elivalwe ngesihlalo elinwebekayo lamukela umklamo ofanayo ophansi-phansi njengalowo womshini wepayipi lamanzi, okungekho lula ukubangela udoti ukuba lunqwabelene futhi lenze ukugeleza koketshezi kungavinjelwa.
3. Isembozo serabha esiphelele: inqama ithatha irabha yeqophelo eliphezulu isembozo serabha sangaphakathi nangaphandle.Ubuchwepheshe bezinga lokuqala laseYurophu lokuvuvukalisa iraba lenza ukuba inqama ethintekile iqinisekise ubukhulu obunembile bejiyomethri, futhi inqama yenjoloba ne-nodular cast kuhlanganiswe ngokuqinile, okungelula Ukuchithwa okuhle nenkumbulo enwebekayo.
4. Umzimba we-valve ocijile ngokunemba: Umzimba we-valve uphonswa ngokunemba, futhi ubukhulu bejometri obunembile benza kube nokwenzeka ukuqinisekisa ukucinana kwevalvu ngaphandle komsebenzi wokuqeda ngaphakathi komzimba wevalvu.
Ukufakwa Nokugcinwa Kwamavalvu Esango
1. Amasondo esandla, izibambo kanye nezindlela zokudlulisa azivunyelwe ukuthi zisetshenziselwe ukuphakamisa, futhi ukushayisana akuvunyelwe ngokuqinile.
2. I-valve yesango le-double disc kufanele ifakwe ngokuqondile (okungukuthi, isiqu se-valve sisendaweni eqondile futhi isondo lesandla liphezulu).
3. I-valve yesango ene-bypass valve kufanele ivulwe ngaphambi kokuvula i-bypass valve (ukulinganisa umehluko wokucindezela phakathi kokungena nokuphuma).
4. Ngamavalvu esango anemishini yokudlulisa, wafake ngokwebhukwana lemiyalelo yomkhiqizo.
5. Uma i-valve isetshenziswa njalo ukuyivula noma ukuyivala, yigcobe okungenani kanye ngenyanga.
Isikhathi sokuthumela: Aug-07-2023