Umahluko phakathi kokuthulisa iivalve zokujonga kunye neevalvu zokujonga ezithuleyo ikakhulu kuxhomekeke kwinqanaba lokuthulisa.Ivalve yokukhangela yokuthulisaphelisa ingxolo kuphela kwaye unciphise ingxolo.Ivalve yokujonga ethuleingasikhusela ngokuthe ngqo kwaye ithulise isandi xa isetyenziswa.
Iivalvu zokutshekisha ezithe cwakazisetyenziswa kakhulu kwimibhobho yesixokelelwano samanzi kwaye ifakelwe kwindawo yokuphuma yempompo yamanzi.Yenziwe ngumzimba wevalvu, idiski yevalvu, isiqu sevalvu, intwasahlobo kunye namanye amalungu.I-stroke yokuvala imfutshane kwaye isantya se-reverse flow sincinci ngeli xesha lokuvala.I-valve disc seal ithatha irubha ethambileyo yokutywina, kwaye ukubuya kwentwasahlobo kwenza ivalve ivuleke kwaye ivale ngaphandle kwempembelelo, ukunciphisa ingxolo kunye nesiphumo sehamile samanzi, ke ibizwa ngokuba yivalve yokujonga isithulisi.Ingundoqo yevalve yayo ithatha isakhiwo sokuphakamisa kwaye luhlobo lwevalve yokukhangela yokuphakamisa.
Ukuthulisa iivalve zokujongazifakwe ngokuthe nkqo.Kwii-cores ze-valve yesikhokelo esinamacala amabini, ziyakwazi ukufakwa ngokuthe tye.Nangona kunjalo, kwi-valve-diameter-diameter, ubunzima bokuzimela be-disc ye-valve bukhulu kakhulu, okuya kubangela ukunxiba kwe-unilateral kwi-sleeve yesikhokelo, kwaye kwiimeko ezinzima zichaphazela umphumo wokutywinwa.Ngoko ke, kucetyiswa ukuba kufakwe ngokuthe nkqo kwiivalve ezinobubanzi obukhulu.
Ivalve yokukhangela ethuleyo ikwabizwa ngokuba yi-axial flow check valve, sisixhobo esiphambili esifakwe kwindawo yokuphuma yempompo okanye icompressor ukuthintela umva ophakathi.Ngenxa yokuba i-axial flow check valve ineempawu zomthamo oqinileyo wokuhamba, ukuchasana nokuhamba okuncinci, iphethini yokuhamba kakuhle, ukutywinwa okuthembekileyo kunye nokungabikho kwesando samanzi xa uvula kwaye uvala.Ifakwe kwindawo yokungena kwamanzi kwimpompo yamanzi kwaye inokuvalwa ngokukhawuleza ngaphambi kokuba ukuhamba kwamanzi kubuyele., ukuphepha isando samanzi, isandi sehamile samanzi kunye nefuthe elibi ukufezekisa umphumo othuleyo.Ngoko ke, isetyenziswe ngokubanzi kwimibhobho yeoli kunye negesi ekude, isityalo samandla enyukliya sinikezela ngamanzi, i-compressors kunye neepompo ezinkulu kwizityalo ezinkulu ze-ethylene, njl.
Ubukhulu becala yenziwe ngumzimba wevalvu, isihlalo sevalve, idiski yevalve, intwasahlobo, intonga yesikhokelo, umkhono wesikhokelo, isigqubuthelo sesikhokelo kunye namanye amalungu.Umphezulu ongaphakathi womzimba wevalvu, isigqubuthelo sesikhokelo, idiskhi yevalve kunye nezinye iindawo ezidlulayo kufuneka zilungelelaniswe ukuhlangabezana noyilo lwemilo yehydraulic, kwaye kufuneka ijikelezwe ngaphambili kwaye ikhombe ngasemva ukufumana indlela engcono yamanzi elungelelanisiweyo.Ulwelo luziphatha ngokuyintloko njengokuhamba kwe-laminar kumphezulu wayo, kunye nesiphithiphithi esincinci okanye singabikho.Umngxuma ongaphakathi womzimba wevalvu sisakhiwo seVenturi.Xa ulwelo luhamba kumjelo wevalve, luyancipha ngokuthe ngcembe kwaye luyanda, lunciphisa ukuveliswa kwemisinga eddy.Ilahleko yoxinzelelo incinci, iphethini yokuhamba izinzile, akukho cavitation, kunye nengxolo ephantsi.
Inokufakwa ngokuthe tye kwaye ngokuthe nkqo.Xa i-diameter enkulu ifakwe ngokuthe tye, intonga yesikhokelo kufuneka yamkele isakhiwo sesikhokelo esiphindwe kabini ukuphepha ukugqithisa ngokugqithiseleyo kwelinye icala lomkhono wesikhokelo kunye nentonga yesikhokelo esibangelwa ubunzima be-disc valve.Oku kubangela ukuba isiphumo sokutywinwa kwedisk yevalve yehle kwaye ingxolo inyuke xa ivala.
Umahluko phakathi kwe Ukuthulisa iivalve zokujonga kunye neevalvu zokujonga eziThulileyo:
1. Isakhiwo sevalve sahlukile.Ukwakhiwa kwevalve yokujonga i-silencer kulula, kwaye i-valve yokukhangela i-flow channel inesakhiwo esiqhelekileyo.Ubume be-axial flow check valve bunzima ngakumbi.Umgodi ongaphakathi womzimba wevalve sisakhiwo seVenturi esinesikhokelo sokuhamba ngaphakathi.Wonke umphezulu wokuhamba ulungelelanisiwe.Ukutshintshwa okugudileyo komjelo wokuhamba kunciphisa ama-eddy currents kwaye kunciphisa ngokufanelekileyo ukuchasana nokuhamba.
2. I-valve core yokutywina isakhiwo yahlukile.Ivalve yokujonga isithulisi ithatha isiseko sevalve etywiniweyo yerabha, kwaye yonke isiseko sevalve sigqunywe ngerabha, okanye isihlalo sevalve sivalwe ngeringi yerabha.I-axial flow check valves inokusebenzisa izitywina eziqinileyo zetsimbi kunye ne-alloy surfacing, okanye izakhiwo zokutywina ezithambileyo nezilukhuni.Umphezulu wokutywina womelele ngakumbi kwaye wandisa ubomi benkonzo.
3. Iimeko zokusebenza ezisebenzayo zahlukile.Iivalvu zokuhlola ezithuleyo zisetyenziswa ikakhulu kwimibhobho yobushushu obuqhelekileyo njengeenkqubo zamanzi, ezinoxinzelelo olubizwa ngokuba yi-PN10--PN25 kunye needamitha DN25-DN500.Izinto eziphathekayo zibandakanya intsimbi etyhidiweyo, intsimbi etyhidiweyo, kunye nentsimbi engenasici.Iivalvu zokujonga ukuhamba kwe-axial zisetyenziswa kuluhlu olubanzi lwezicelo, ukusuka kwirhasi yendalo engamanzi kwiqondo lobushushu elisezantsi le-161°C ukuya kwiqondo lobushushu obuphezulu.Uxinzelelo lwe-PN16-PN250, i-American standard Class150-Class1500.Ububanzi DN25-DN2000.