Umahluko phakathi kweevalvu zokuhlola ukuthulisa kunye neevalvu zokuhlola ukuthulisa ngokungapheliyo uxhomekeke kakhulu kwinqanaba lokuthulisa.Ivalvu yokujonga ukuthulisasusa ingxolo kuphela kwaye unciphise ingxolo.Ivalvu yokujonga ethuleyoingasikhusela kwaye ithulise isandi ngokuthe ngqo xa isetyenziswa.
Iivalvu zokujonga ezithuleyoZisetyenziswa kakhulu kwimibhobho yenkqubo yamanzi kwaye zifakelwe kwindawo yokuphuma kwepompo yamanzi. Zenziwe ngumzimba wevalvu, idiski yevalvu, isiqu sevalvu, intwasahlobo kunye nezinye iindawo. Umgca wokuvala umfutshane kwaye isantya sokuhamba okungasemva sincinci ngexesha lokuvala. Itywina levalvu lediski lisebenzisa itywina elithambileyo lerabha, kwaye ukubuya kwentwasahlobo kwenza ivalvu ivuleke kwaye ivale ngaphandle kwempembelelo, kunciphisa ingxolo kunye nefuthe lesando samanzi, ngoko ke ibizwa ngokuba yivalvu yokujonga isithuli. Umongo wevalvu yayo usebenzisa isakhiwo sokuphakamisa kwaye luhlobo lwevalvu yokujonga ukuphakamisa.
Iivalvu zokujonga ukuthulisazifakelwa ngokuthe nkqo. Kwii-cores zevalvu ezikhokelayo ezimacala mabini, zinokufakelwa ngokuthe nkqo. Nangona kunjalo, kwiivalvu ezinkulu, ubunzima bediski yevalvu bukhulu kakhulu, nto leyo eya kubangela ukuguguleka kwicala elinye kwisingxobo sesikhokelo, kwaye kwiimeko ezinzima zichaphazela isiphumo sokutywina. Ke ngoko, kuyacetyiswa ukuba ufakelwe ngokuthe nkqo kwiivalvu ezinkulu.
Ivalvu yokujonga engathethiyo ikwabizwa ngokuba yivalvu yokujonga ukuhamba kwe-axial, sisixhobo esibalulekileyo esifakwe kwindawo yokuphuma kwepompo okanye icompressor ukuthintela ukubuya okuphakathi. Ngenxa yokuba ivalvu yokujonga ukuhamba kwe-axial ineempawu zomthamo oqinileyo wokuhamba, ukumelana nokuhamba okuncinci, ipateni elungileyo yokuhamba, ukutywinwa okuthembekileyo kunye nokungabikho kwehamile yamanzi xa ivulwa kwaye ivalwa. Ifakwe kwindawo yokungena kwamanzi yepompo yamanzi kwaye ingavalwa ngokukhawuleza ngaphambi kokuba ukuhamba kwamanzi kubuyele umva. , ukuthintela ihamile yamanzi, isandi sehamile yamanzi kunye nempembelelo etshabalalisayo ukufezekisa isiphumo esingathethiyo. Ke ngoko, isetyenziswa kakhulu kwimibhobho yeoyile negesi ekude, unikezelo lwamanzi oluphambili lwesikhululo samandla enyukliya, iicompressors kunye neepompo ezinkulu kwizityalo ezinkulu ze-ethylene, njl.
Ikakhulu yenziwe ngomzimba wevalvu, isihlalo sevalvu, idiski yevalvu, intwasahlobo, intonga yesikhokelo, isingxobo sesikhokelo, isigqubuthelo sesikhokelo kunye nezinye iindawo. Umphezulu ongaphakathi womzimba wevalvu, isigqubuthelo sesikhokelo, idiski yevalvu kunye nezinye iindawo ezidlulayo kufuneka zilungelelaniswe ukuze zihlangabezane noyilo lwemilo ye-hydraulic, kwaye kufuneka zijikelezwe ngaphambili kwaye zikhombe ngasemva ukuze kufunyanwe umzila wamanzi olungelelanisiweyo ongcono. Ulwelo luziphatha ngokuyintloko njengokuhamba kwe-laminar kumphezulu walo, ngaphandle kokuxinana okuncinci okanye okungekhoyo. Umngxuma ongaphakathi womzimba wevalvu sisakhiwo seVenturi. Xa ulwelo luhamba ngetshaneli yevalvu, luyancipha kancinci kancinci kwaye luyanda, lunciphisa ukuveliswa kwemisinga ye-eddy. Ukulahleka koxinzelelo kuncinci, ipateni yokuhamba izinzile, akukho cavitation, kwaye ingxolo ephantsi.
Ingafakelwa ngokuthe tye nangokuthe nkqo. Xa ifakelwe ububanzi obukhulu ngokuthe tye, intonga yesikhokelo kufuneka isebenzise isakhiwo sesikhokelo esiphindwe kabini ukuze kuthintelwe ukuguguleka okugqithisileyo kwelinye icala lesingxobo sesikhokelo kunye nentonga yesikhokelo okubangelwa bubunzima bediski yevalvu. Oku kubangela ukuba isiphumo sokutywinwa kwediski yevalvu sinciphe kwaye ingxolo inyuke xa ivalwa.
Umahluko phakathi Iivalvu zokujonga ukuthulisa kunye neevalvu zokujonga ukuthulisa:
1. Ulwakhiwo lwevalvu lwahlukile. Ulwakhiwo lwevalvu yokujonga i-silencer lulula kakhulu, kwaye ivalvu yokujonga i-flow channel inesakhiwo esiqhelekileyo. Ulwakhiwo lwevalvu yokujonga i-axial flow luyinkimbinkimbi kancinci. Umngxuma ongaphakathi womzimba wevalvu yisakhiwo seVenturi esinesikhokelo sokuhamba ngaphakathi. Umphezulu wonke wokuhamba ulungelelanisiwe. Utshintsho olugudileyo lwe-flow channel lunciphisa imisinga ye-eddy kwaye lunciphisa ngokufanelekileyo ukumelana nokuhamba.
2. Ulwakhiwo lokutywina i-valve core lwahlukile. Ivalve yokujonga i-silencer isebenzisa i-valve core yerabha etywiniweyo ethambileyo, kwaye yonke i-valve core igqunywe ngerabha, okanye isihlalo se-valve sitywinwe ngeringi yerabha. Iivalve zokujonga ukuhamba kwe-axial zingasebenzisa izitywine zesinyithi eziqinileyo kunye nomphezulu we-alloy eqinileyo, okanye izakhiwo zokutywina ezithambileyo neziqinileyo. Umphezulu wokutywina uhlala ixesha elide kwaye wandisa ubomi benkonzo.
3. Iimeko zokusebenza ezisebenzayo zahlukile. Iivalvu zokujonga ezithuleyo zisetyenziswa kakhulu kwiipayipi zobushushu eziqhelekileyo ezifana neenkqubo zamanzi, ezinoxinzelelo oluqhelekileyo lwe-PN10--PN25 kunye nobubanzi be-DN25-DN500. Izinto ziquka isinyithi esityhidiweyo, isinyithi esityhidiweyo, kunye nentsimbi engatyiwayo. Iivalvu zokujonga ukuhamba kwe-axial zisetyenziswa kuluhlu olubanzi lwezicelo, ukusuka kwigesi yendalo enyibilikisiweyo kubushushu obuphantsi be--161°C ukuya kumphunga obushushu obuphezulu. Uxinzelelo oluqhelekileyo lwe-PN16-PN250, umgangatho waseMelika we-Class150-Class1500. Ububanzi be-DN25-DN2000.