Umehluko phakathi kwama-valve okuhlola ukuthulisa kanye nama-valve okuhlola athule ikakhulukazi uncike ezingeni lokuthulisa.I-valve yokuhlola yokuthulisaqeda kuphela umsindo futhi unciphise umsindo.I-valve yokuhlola ethuleingavikela ngokuqondile futhi ithulise umsindo lapho isetshenziswa.
Ama-valve okuhlola athuleasetshenziswa kakhulu kumapayipi ohlelo lwamanzi futhi afakwa lapho kuphuma khona iphampu yamanzi.Yakhiwa umzimba we-valve, i-valve disc, i-valve stem, intwasahlobo nezinye izingxenye.I-stroke yokuvala ifushane futhi isivinini sokugeleza okuphambene sincane ngesikhathi sokuvalwa.I-valve disc seal ithatha uphawu oluthambile lwerabha, futhi ukubuya kwentwasahlobo kwenza i-valve ivuleke futhi ivale ngaphandle komthelela, inciphisa umsindo nomphumela wesando samanzi, ngakho ibizwa ngokuthi i-valve yokuhlola isithulisi.I-valve core yayo ithatha isakhiwo sokuphakamisa futhi iwuhlobo lokuphakamisa i-valve yokuhlola.
Ukuthulisa ama-valve okuhlolaafakwe ngokuyinhloko mpo.Kuma-valve omhlahlandlela anezinhlangothi ezimbili, angafakwa futhi ngokuvundlile.Kodwa-ke, kuma-valve anobubanzi obukhulu, isisindo sokuzimela sediski ye-valve sikhulu kakhulu, okuzobangela ukugqoka okuhlangene kumkhono womhlahlandlela, futhi ezimweni ezinzima kuthinta umphumela wokuvala.Ngakho-ke, kunconywa ukufaka ngokuqondile kuma-valve obubanzi obukhulu.
Ivalve yokuhlola ethule iphinde yaqanjwa ngokuthi i-axial flow check valve, iyithuluzi eliyisihluthulelo elifakwe lapho kuphuma khona iphampu noma i-compressor ukuvimbela ukugeleza emuva okumaphakathi.Ngenxa yokuthi i-valve yokuhlola ukugeleza kwe-axial inezici zomthamo oqinile wokugeleza, ukumelana nokugeleza okuncane, iphethini elihle lokugeleza, ukubekwa uphawu okuthembekile futhi akukho isando samanzi lapho uvula futhi uvala.Ifakwe endaweni yokungena kwamanzi yepompo yamanzi futhi ingavalwa ngokushesha ngaphambi kokuba ukugeleza kwamanzi kubuyele emuva., ukugwema isando samanzi, isando samanzi umsindo kanye nomthelela omubi ukuze kuzuzwe umphumela othule.Ngakho-ke, isetshenziswe kabanzi emapayipini kawoyela negesi amabanga amade, isikhungo samandla enuzi esihlinzeka ngamanzi, ama-compressor namaphampu amakhulu ezitshalweni ezinkulu ze-ethylene, njll.
Ngokuyinhloko yakhiwe umzimba we-valve, isihlalo se-valve, i-valve disc, intwasahlobo, induku yomhlahlandlela, umkhono womhlahlandlela, ikhava yomhlahlandlela nezinye izingxenye.Ingaphakathi le-valve yomzimba, isembozo somhlahlandlela, idiski ye-valve nezinye izindawo ezidlulayo kufanele ziqondiswe ukuze zihlangabezane nomklamo womumo we-hydraulic, futhi kufanele zibe yindilinga ngaphambili futhi zikhonjwe ngemuva ukuze kutholwe umzila wamanzi ohleleke kangcono.Uketshezi lusebenza ngokuyinhloko njengokugeleza kwe-laminar ebusweni balo, ngesiyaluyalu esincane noma esingekho nhlobo.Umgodi ongaphakathi womzimba we-valve uyisakhiwo se-Venturi.Lapho uketshezi lugeleza kumzila we-valve, kancane kancane luyancipha futhi lwande, lunciphise ukukhiqizwa kwama-eddy currents.Ukulahlekelwa kwengcindezi kuncane, iphethini yokugeleza izinzile, ayikho i-cavitation, nomsindo ophansi.
Ingafakwa ngokuvundlile nangokuqondile.Uma ububanzi obukhulu bufakwe ngokuvundlile, induku yomhlahlandlela kufanele ithathe isakhiwo somhlahlandlela kabili ukuze ugweme ukuguga ngokweqile ohlangothini olulodwa lomkhono womhlahlandlela kanye nenduku yokuqondisa okubangelwa isisindo se-valve disc.Lokhu kubangela ukuthi umphumela wokuvala i-valve disc wehle futhi umsindo ukhuphuke lapho uvala.
Umehluko phakathi kwe- Ukuthulisa ama-valve okuhlola kanye nama-valve okuhlola athule:
1. Isakhiwo se-valve sihlukile.Isakhiwo se-valve yokuhlola i-silencer silula, futhi i-valve yokuhlola isiteshi sokugeleza inesakhiwo esivamile.Isakhiwo se-axial flow check valve siyinkimbinkimbi kancane.Umgodi ongaphakathi womzimba we-valve uyisakhiwo se-Venturi esinomhlahlandlela wokugeleza ngaphakathi.Yonke indawo yokugeleza ilula.Ukuguqulwa okubushelelezi kwesiteshi sokugeleza kunciphisa imisinga ye-eddy futhi kunciphisa ngempumelelo ukumelana nokugeleza.
2. I-valve core sealing structure ihlukile.Ivalvu yokuhlola isithulisi isebenzisa umgogodla wenjoloba ovalwe ngokuthambile, futhi wonke umgogodla we-valve umbozwe ngerabha, noma isihlalo se-valve sivalwe ngendandatho yerabha.Ama-valve okuhlola ukugeleza kwe-axial angasebenzisa izigxivizo eziqinile zensimbi kanye nokuvela kwe-alloy eqinile, noma izakhiwo zokuvala ezithambile neziqinile eziyinhlanganisela.Indawo yokuvala iqinile futhi inweba impilo yesevisi.
3. Izimo zokusebenza ezisebenzayo zihlukile.Ama-valve okuhlola athule asetshenziswa kakhulu kumapayipi okushisa avamile njengezinhlelo zamanzi, anezingcindezi ezithi PN10--PN25 namadiameters DN25-DN500.Izinto ezisetshenziswayo zifaka i-cast iron, cast steel, ne-stainless steel.Amavalvu okuhlola ukugeleza kwe-axial asetshenziswa ohlangeni olubanzi lwezinhlelo zokusebenza, kusukela kugesi yemvelo ewuketshezi emazingeni okushisa aphansi angu-161°C kuya kumusi oshisa kakhulu.Ukucindezela okuzisholo PN16-PN250, American standard Class150-Class1500.Ububanzi DN25-DN2000.