Ukuya kwinqanaba elithile, ivalvu yeglobe kunye nevalvu yesango kunokuthiwa zineekhonkco ezininzi. Ngaba kunokuthiwa ivalvu yeglobe kunye nevalvu yesango zinokuxutywa ngokwenene? ​​IShanghai Dongbao Valve Manufacturing Co., Ltd. ilapha ukukuphendulela lo mbuzo.

1. Ulwakhiwo
Xa indawo yokufaka incinci, nceda uqaphele ukhetho:
Iivalvu yesangoingavalwa ngokuqinileyo ngomphezulu wokuvala ngokuxhomekeke kuxinzelelo oluphakathi, ukuze kufezekiswe isiphumo sokungavuzi. Xa uvula kwaye uvala, umongo wevalvu kunye nomphezulu wokuvala isihlalo sevalvu zihlala zidibana kwaye zigudlana, ngoko ke umphezulu wokuvala kulula ukuwunxiba. Xa ivalvu yesango isondele ekuvaleni, umahluko woxinzelelo phakathi komphambili nomva wombhobho mkhulu, nto leyo eyenza umphezulu wokuvala ubole kakhulu.
Ulwakhiwo lwevalvu yesango luya kuba nzima ngakumbi kunevalvu yokuvala. Ngokwembono yembonakalo, ivalvu yesango inde kunevalvu yokuvala kwaye ivalvu yokuvala inde kunevalvu yesango kwimeko ye-caliber efanayo. Ukongeza, ivalvu yesango inokwahlulwa ibe yinduku ekhanyayo kunye nenduku emnyama. Ivalvu yokuvala ayinayo.
2. Umgaqo wokusebenza
Xa ivalvu yokuvala ivuliwe kwaye ivaliwe, isiqu siyaphakama, oko kukuthi, xa ivili lesandla lijikeleziswa, ivili lesandla liya kujikeleza lize liphakanyiswe kunye nesiqu. Ivalvu yesango ijikeleza ivili lesandla ukuze isiqu sevalvu sihambe phezulu nasezantsi, kwaye indawo yevili lesandla ayitshintshi.
Izinga lokuhamba kwamanzi lahlukile, ivalvu yesango kufuneka ivuleke ngokupheleleyo okanye ivalwe ngokupheleleyo, kodwa ivalvu yokumisa ayifuneki. Ivalvu yokuvala inemiyalelo echaziweyo yokungena kunye neyokuphuma, kwaye ivalvu yesango ayinayo imfuneko yokungena kunye neyokuphuma.
Ukongeza, ivalvu yesango inezimo ezimbini kuphela: ivuliwe ngokupheleleyo okanye ivaliwe ngokupheleleyo, istroke yokuvula nokuvala isango inkulu, kwaye ixesha lokuvula nokuvala lide. Istroke yokunyakaza kwepleyiti yevalvu yevalvu yokuvala incinci kakhulu, kwaye ipleyiti yevalvu yevalvu yokuvala inokumiswa kwindawo ethile ngexesha lokuhamba ukuze kulungiswe ukuhamba kwamanzi. Ivalvu yesango ingasetyenziselwa kuphela ukusika, kwaye ayinayo eminye imisebenzi.
3. Umahluko ekusebenzeni
Ivalvu yokuvala ingasetyenziselwa ukulungisa ukunqunyulwa nokugeleza kwamanzi. Ukumelana kolwelo lwevalvu yeglobe kukhulu kakhulu, kwaye kunzima ukuyivula nokuvala, kodwa ngenxa yokuba umgama phakathi kwepleyiti yevalvu nomphezulu wokuvala umfutshane, indlela yokuvula nokuvala imfutshane.
Ngenxa yokubaivalvu yesangoinokuvulwa ngokupheleleyo kwaye ivalwe ngokupheleleyo kuphela, xa ivuliwe ngokupheleleyo, ukumelana nokuhamba okuphakathi kwitshaneli yomzimba wevalvu kuphantse kube zero, ngoko ke ukuvulwa nokuvalwa kwevalvu yesango kuya konga kakhulu umsebenzi, kodwa isango likude kakhulu nomphezulu wokutywina kwaye ixesha lokuvulwa nokuvalwa lide.
4. Ukufakelwa kunye nokuhamba kwamanzi
Isiphumo sevalvu yesango kuzo zombini iindlela siyafana. Akukho mfuneko yemiyalelo yokungena kunye neyokuphuma yokufakelwa, kwaye i-medium ingajikeleza kuzo zombini iindlela. Ivalvu yokuvala kufuneka ifakwe ngokuhambelana ngqo nesikhokelo sophawu lotolo emzimbeni wevalvu. Kukwakho nommiselo ocacileyo malunga nesikhokelo sokungena kunye nesokuphuma sevalvu yokuvala. Ivalvu yelizwe lam "iSanhua" ichaza ukuba indlela yokuhamba kwevalvu yokuvala kufuneka ibe ukusuka phezulu ukuya ezantsi.
Ivalvu yokuvala iphantsi ngaphakathi nangaphandle. Ukusuka ngaphandle, kuyacaca ukuba umbhobho awukho kumgca othe tye wesigaba esinye. Indlela yokuhamba kwevalvu yesango ikumgca othe tye. Ukubetheka kwevalvu yesango kukhulu kunevalvu yokumisa.
Ngokwembono yokumelana nokuhamba kwamanzi, ukumelana nokuhamba kwamanzi kwevalvu yesango kuncinci xa ivuliwe ngokupheleleyo, kwaye ukumelana nokuhamba kwamanzi kwevalvu yokumisa umthwalo kukhulu. I-coefficient yokumelana nokuhamba kwamanzi kwevalvu yesango eqhelekileyo imalunga ne-0.08 ~ 0.12, amandla okuvula nokuvala mancinci, kwaye i-medium inokuhamba ngeendlela ezimbini.
Ukumelana nokuhamba kweevalvu eziqhelekileyo zokuvala kuphindwe kathathu ukuya kahlanu kuneevalvu zesango. Xa zivulwa kwaye zivaliwe, kufuneka zinyanzelwe ukuba zivale ukuze kufunyanwe isitywino. Umbindi wevalvu yevalvu yokumisa awuqhagamshelani nomphezulu wokutywina xa uvaliwe ngokupheleleyo, ngoko ke ukuguguleka komphezulu wokutywina kuncinci kakhulu. Ivalvu yokumisa efuna ukongeza i-actuator ngenxa yamandla amakhulu okuhamba kufuneka iqwalasele indlela yokulawula i-torque. Uhlengahlengiso.
Xa ivalvu yokuvala ifakiwe, i-medium ingangena isuka ngaphantsi kwe-valve core ize ingene isuka phezulu ngeendlela ezimbini.
Inzuzo yesixhobo sokungena sisuka ngaphantsi kwesiseko sevalvu kukuba ukupakisha akukho phantsi koxinzelelo xa ivalvu ivaliwe, nto leyo enokwandisa ubomi benkonzo yokupakisha, kwaye inokutshintsha ukupakisha xa umbhobho ophambi kwevalvu uphantsi koxinzelelo.
Ingxaki yokungena kwe-medium ukusuka ezantsi kwe-valve core kukuba i-driving torque ye-valve inkulu kakhulu, malunga ne-1.05 ~ 1.08 ye-increase engasentla, i-valve stem iphantsi kwamandla amakhulu e-axial, kwaye i-valve stem kulula ukuyigoba.
Ngenxa yesi sizathu, indlela i-medium engena ngayo isuka ngezantsi idla ngokufaneleka kuphela kwiivalvu zokumisa ezincinci (ngaphantsi kwe-DN50). Kwiivalvu zokumisa ezingaphezulu kwe-DN200, i-medium ingena isuka phezulu. Ivalvu yokucima umbane idla ngokuthatha indlela i-medium engena ngayo isuka phezulu.
Ingxaki yendlela i-medium engena ngayo isuka phezulu ichasene kakhulu nendlela i-medium engena ngayo isuka ngaphantsi. Enyanisweni, inokugeleza kuzo zombini iindlela, kujongwa nje iimbono ezahlukeneyo.
5. Isitywino
Umphezulu wokutywina wehlabathiivalvulicala elincinci le-trapezoidal le-valve core (jonga imo ye-valve core ukuze ufumane iinkcukacha). Nje ukuba i-valve core iwele, iyafana nokuvala i-valve (ukuba umahluko woxinzelelo mkhulu, ewe ukuvala akuqinile, kodwa isiphumo sokulwa nokubuyela umva asibi sibi). I-valve yesango ivalwe ecaleni kwepleyiti yesango le-valve core, isiphumo sokutywina asilunganga njenge-stop valve, kwaye i-valve core ayizukuvalwa njenge-stop valve xa i-valve core iwela.