Iivalvu zeglobhu,iivalve zesango, iivalve butterfly, khangela iivalvukwayeiivalve zebhola, njl. Ezi valve ngoku ngamacandelo olawulo ayimfuneko kwiinkqubo ezahlukeneyo zemibhobho.Uhlobo ngalunye lwesivalo lwahlukile ngenkangeleko, ulwakhiwo kunye nenjongo yokusebenza.Nangona kunjalo, ivalve yokumisa kunye neivalve yesangozineemfano ezithile ngenkangeleko, kwaye zombini zinomsebenzi wokusika kumbhobho.Ngoko ke, abahlobo abaninzi abangenalo unxibelelwano oluninzi kunye nevalve baya kudibanisa ezimbini.Enyanisweni, ukuba uqwalasela ngenyameko, umahluko phakathi kwevalve yeglowubhu kunye neivalve yesangoinkulu kakhulu.
1.Ngokwesakhiwo
Ingqalelo kufuneka ihlawulwe ekukhethweni xa indawo yokufakela ilinganiselwe.Iivalve yesangoinokuvalwa ngokuqinileyo kunye nomphezulu wokutywina ngokuxhomekeke kuxinzelelo oluphakathi, ukuze ufezekise umphumo wokungavuzi.Xa uvula kwaye uvala, i-valve core kunye ne-valve seat i-surface yokutywina ihlala idibanisa kwaye ikhuhla omnye komnye, ngoko ke indawo yokutywina kulula ukuyinxiba.Xa iivalve yesangoisondele ekuvaleni, umahluko woxinzelelo phakathi komphambili nasemva wombhobho mkhulu, nto leyo eyenza ukuba umphezulu wokutywina unxibe kakhulu.
Ubume beivalve yesangoiya kuba nzima ngakumbi kunevalve yokuvala.Ukusuka kwindawo yembonakalo, iivalve yesangoinde kunevalve yokuvala kwaye ivalve yokuvala inde kune-valveivalve yesangokwimeko yomgangatho ofanayo.Ukongeza, iivalve yesangoyahlulwe yaba yi-aOS&Y isiqukunye aIsiqu esinganyukiyo.Ivalve yokuvala ayifuni.
2.Umgaqo wokuSebenza
Xa i-valve yokuvala ivuliwe kwaye ivaliwe, i-stem iphakama, oko kukuthi, xa isondo lesandla liguqulwa, isondo lesandla liya kujikeleza kwaye liphakamise kunye nesiqu.Iivalve yesangoujikelezisa ivili lesandla ukwenza isiqu sevalve siye phezulu sisehla, kwaye indawo yesandla yesandla ihlala ingatshintshi.Izinga lokuhamba lihlukile, iivalve yesangoiyadingeka ukuba ivuleke ngokupheleleyo okanye ivalwe ngokupheleleyo, kodwa ivalve yokumisa ayifuni.Ivalve yokuvala ichaze indlela yokungena neyokuphuma;iivalve yesangoayinayo imfuneko yendlela yokungena nokuphumayo.
Ukongeza, iivalve yesangoinamazwe amabini kuphela: ivule ngokupheleleyo okanye ivalwe ngokupheleleyo, isango lokuvula nokuvala i-stroke inkulu, kwaye ixesha lokuvula nokuvala lide.I-stroke ye-valve ye-valve ye-valve yokuvala i-valve incinci kakhulu, kwaye i-valve ye-valve ye-valve yokuvala ingamiswa kwindawo ethile ngexesha lokuhamba kokulungiswa kokuhamba.Iivalve yesangoingasetyenziselwa kuphela ukusika, kwaye ayinayo eminye imisebenzi.
3.Umahluko wokusebenza
Ivalve yokuvala ingasetyenziselwa ukusika kunye nokulungelelanisa ukuhamba.Ukuxhathisa ulwelo lwevalve yeglowubhu kukhulu, kwaye kunzima kakhulu ukuvula nokuvala, kodwa ngenxa yokuba umgama phakathi kwepleyiti yevalve kunye nomphezulu wokutywina umfutshane, ukuvulwa nokuvala istroke kufutshane.
Ngenxa yokubaivalve yesangoinokuvulwa ngokupheleleyo kwaye ivalwe ngokupheleleyo, xa ivulwe ngokupheleleyo, ukuchasana kokuhamba kwe-medium kumjelo womzimba wevalve phantse i-zero, ngoko ke ukuvulwa kunye nokuvalwa kwesixhobo.ivalve yesangoiya kusindisa kakhulu umsebenzi, kodwa isango likude kumphezulu wokutywina kwaye ixesha lokuvula kunye nokuvala lide.
4.Ukufakwa kunye nokuhamba
Impembelelo yevalve yesango kumacala omabini iyafana.Akukho mfuneko yendlela yokungena kunye ne-outlet yokufakelwa, kwaye i-medium inokujikeleza kumacala omabini.Ivalve yokumisa kufuneka ifakwe ngokungqongqo ngokuhambelana nesalathiso esiboniswe lutolo kumzimba wevalve.Kukho nomgaqo ocacileyo malunga nolwalathiso lokungena kunye nokuphuma kwevalve yokumisa.Indlela yokuhamba kwevalve yokumisa iya kuba ukusuka phezulu ukuya ezantsi.
Ivalve yokuvala iphantsi kwaye iphezulu ngaphandle.Ukusuka ngaphandle, kuyacaca ukuba umbhobho awukho kumgca othe tye wesigaba esinye.Iivalve yesangoindlela yokuhamba ikumgca othe tye.Ukubetha kweivalve yesangoinkulu kunaleyo yevalve yokumisa.
Ukusuka kwimbono yokumelana nokuhamba, ukuchasana kokuhamba kweivalve yesangoincinci xa ivulwe ngokupheleleyo, kwaye ukuchasana kokuhamba kwevalve yokumisa umthwalo kukhulu.I-coefficient yokumelana nokuhamba kwesiqheloivalve yesangomalunga ne-0.08 ~ 0.12, amandla okuvula kunye nokuvala kuncinci, kwaye i-medium inokuhamba ngeendlela ezimbini.Ukuchasana nokuhamba kweevalvu eziqhelekileyo zokuvala ziphindwe ngama-3-5iivalve zesango(inombolo kawonke-wonke: umlindi wempompo).Xa uvula kwaye uvala, kufuneka unyanzeliswe ukuvala ukufezekisa itywina.Ingundoqo yevalve yevalve yokumisa ayiqhagamshelani nomphezulu wokutywina xa ivalwe ngokupheleleyo, ngoko ke ukunxiba kwendawo yokutywina kuncinci kakhulu.Ivalve yokumisa ekufuneka yongeze i-actuator ngenxa yegunya eliphambili lokuhamba kufuneka linikele ingqalelo kwindlela yokulawula i-torque Uhlengahlengiso.
Kukho iindlela ezimbini zokufakela ivalve yokuvala.Enye kukuba i-medium ingangena ukusuka ngaphantsi kwe-valve core.Inzuzo kukuba ukupakishwa akugxininisi xa i-valve ivaliwe, enokwandisa ubomi benkonzo yokupakisha kwaye inokuthwala uxinzelelo kwipayipi phambi kwevalve.Ngaphantsi kweemeko, ukupakisha kufuneka kutshintshwe;into engalunganga kukuba i-torque yokuqhuba i-valve inkulu, malunga namaxesha angama-1 okuhamba okuphezulu, i-axial force kwi-valve stem inkulu, kwaye i-valve stem kulula ukugoba.Ngoko ke, le ndlela ifanelekile kuphela kwiivalve zokumisa ezincinci zobubanzi (ngaphantsi kwe-DN50).Kwiivalvu zokumisa ngaphezulu kwe-DN200, i-medium ingena ivela phezulu.(Ivalve yokuvala yombane ngokuqhelekileyo ithatha indlela engena ngayo ukusuka phezulu.) Ukungalungi kwendlela okungena kuyo okuphakathi ukusuka phezulu kuchasene nendlela yokungena ukusuka ezantsi.
Ixesha lokuposa: Sep-03-2021