Ivalve yeSango VS iValve yeBhola

1. Umgaqo:

Ivalve yebhola:Indawo yokuvula neyokuvala yevalve yebhola yingqukuva, kwaye injongo yokuvula nokuvala iphunyezwa ngokujikelezisa ingqukuva engama-90° ujikeleze iaxis yesikhondo sevalve.Ivalve yebhola isetyenziselwa ikakhulu ukusika, ukusasaza kunye nokutshintsha indlela yokuhamba kwe medium kumbhobho.Ivalve yebhola eyenzelwe ngokuvula okumise okwe-V nayo inomsebenzi olungileyo wohlengahlengiso lokuhamba.

IValve yeSango: ilungu elivalayo (I-Wedge) lihamba kwicala elithe nkqo le-axis yeshaneli isetyenziselwa ikakhulu ukunqumla i-medium kumbhobho, oko kukuthi, ivule ngokupheleleyo okanye ivalwe ngokupheleleyo.Ngokubanzi, iivalve zesango azinakusetyenziselwa ukulawula ukuhamba.Ingasetyenziswa kwiqondo lokushisa eliphantsi okanye ubushushu obuphezulu kunye noxinzelelo oluphezulu, kwaye ingasetyenziselwa ngokwezinto ezahlukeneyo zevalve.

2. Izinto eziluncedo nezingeloncedo

2.1 Izinto eziluncedo kwivalve yebhola

1) Inokumelana nokuhamba okuphantsi (okwenene i-0);inokusetyenziswa ngokuthembekileyo kumajelo eendaba ezonakalisayo kunye nolwelo lwamanqaku aphantsi abilayo ngenxa yokuba ayizukuxinga ngexesha lokusebenza (xa kungekho sithambiso);

2) , kuxinzelelo olukhulu kunye noluhlu lweqondo lokushisa, linokufikelela ukutywinwa okupheleleyo;

I-3) Inokuqonda ukuvulwa nokuvala ngokukhawuleza, kwaye ixesha lokuvula kunye nokuvalwa kwezinye izakhiwo kuphela i-0.05 ~ 0.1s ukuqinisekisa ukuba ingasetyenziselwa inkqubo yokuzenzekelayo yebhentshi yokuvavanya.Xa i-valve ivuliwe kwaye ivalwe ngokukhawuleza, umsebenzi awunayo impembelelo;

4).Ukuvalwa kwe-spherical kunokubekwa ngokuzenzekelayo kwindawo yomda

5).Xa ivuliwe ngokupheleleyo kwaye ivalwe ngokupheleleyo, umphezulu wokutywina webhola kunye nesihlalo sevalve yodwa ukusuka kwindawo ephakathi, ngoko ke i-medium edlula kwivalve ngesantya esiphezulu ayiyi kubangela ukhukuliseko lomphezulu wokutywina;

6).Ngesakhiwo esihlangeneyo kunye nobunzima obulula, sinokuthathwa njengesona sakhiwo sevalve esinengqiqo kwinkqubo ephakathi kobushushu obuphantsi;

7) Umzimba wevalve u-symmetrical, ngakumbi ubume bomzimba wevalve edityanisiweyo, enokumelana kakuhle noxinzelelo oluvela kumbhobho;

I-8) Inxalenye yokuvala inokumelana nokuhluka koxinzelelo oluphezulu xa uvala.

9).Ivalve yebhola enomzimba wevalve edityanisiweyo ngokupheleleyo inokungcwatywa ngokuthe ngqo emhlabeni, ukuze i-valve yangaphakathi ingagqwali, kwaye ubomi benkonzo bunokufikelela kwiminyaka engama-30.Yivalvu efanelekileyo yeoli kunye nemibhobho yegesi yendalo.

2.2 Izinto ezingeloncedo kwivalve yebhola

Ngenxa yokuba eyona nto ibalulekileyo yokutywina isihlalo sevalve yebhola yi-polytetrafluoroethylene, ayisebenzi phantse kuzo zonke izinto zekhemikhali, kwaye ineempawu ze-coefficient encinci ye-friction, ukusebenza okuzinzileyo, akukho lula ukuguga, uluhlu olubanzi lobushushu kunye nokusebenza okugqwesileyo kokutywinwa.Iimpawu ezibanzi.

Kodwa iipropati ezibonakalayo ze-PTFE, kubandakanywa i-coefficient ephezulu yolwandiso, uvakalelo lokuhamba okubandayo, kunye nokungahambi kakuhle kwe-thermal, kufuna ukuba uyilo lwetywina lwesihlalo kufuneka lwakhiwe malunga nezi propati.Ngoko ke, xa izinto zokutywinwa ziba nzima, ukuthembeka kokutywinwa kubonakaliswe.

Ngaphezu koko, i-PTFE inomgangatho ophantsi wokumelana nobushushu kwaye ingasetyenziswa kuphela ngaphantsi kwe-180 °C.Ngaphezulu kweli qondo lokushisa, izinto zokutywina ziya kuthotywa.Kwimeko yokusetyenziswa kwexesha elide, ngokuqhelekileyo isetyenziswa kuphela kwi-120 °C.

2.3 Izinto ezilungileyo zevalvu yesango

I-1) Ukuxhatshazwa kokuhamba kuncinci.Umjelo ophakathi ngaphakathi kumzimba we-valve uthe tye, i-medium flowing in a straight line, kunye nokumelana nokuhamba kuncinci.

2) Konga umsebenzi ngakumbi xa uvula naxa uvala.Xa kuthelekiswa nevalve yehlabathi, kuba ingaba ivulekile okanye ivaliwe, ulwalathiso lokuhamba kwesango luyi-perpendicular ukuya kwi-flow direction of medium.

3) Ubude bukhulu kwaye ixesha lokuvula kunye nokuvala lide.Ukuvula nokuvalwa kwesango kukhulu, kwaye ukunyuswa kunye nokunciphisa kuqhutyelwa nge-screw.

I-4) Into yehamile yamanzi ayilula ukuba yenzeke.Isizathu lixesha elide lokuvala.

5) I-medium inokuhamba kuyo nayiphi na indlela kumacala omabini, okulula ukuyifaka.Ishaneli yevalvu yesango i-symmetrical kumacala omabini.

2.4 Izinto ezingeloncedo kwivalve yesango

1) Kulula ukwenza ukhukuliseko kunye nemikrwelo phakathi kweendawo zokutywina, kwaye ukugcinwa kunzima kakhulu.

3) Imilinganiselo yangaphandle inkulu, indawo ethile iyadingeka ukuvula, kwaye ixesha lokuvula nokuvala lide.

4) Isakhiwo sinzima ngakumbi.

Ngaba iivalve zebhola zingcono kuneengcango zesango?

I-advanteji yeevalvu zebhola ngaphezu kweevalvu zesango kukuba zitywina ngokuqinileyo, ngoko ke ziyakwazi ukumelana nokuvuza kuneevalvu zesango.Oku kungenxa ye-100% yesaphulelo sesici sabo.Ukongeza, iivalve zebhola kulula ukuzisebenzisa kuneengcango zesango, zinezinga eliphantsi lokungaphumeleli, kwaye zihlala ixesha elide.

Iimpawu zeevalvu zebhola zizenza zilungele ukuvala ulwelo lokulawula.

Iivalvu zebhola zihlala ziqhuba kakuhle emva kwemijikelo emininzi kwaye zithembekile kwaye ziyakwazi ukuvala ngokukhuselekileyo nasemva kwexesha elide lokungasebenzi.Ngenxa yezi zizathu, iivalve zebhola zikhethwa ngokubanzi ngaphezu kweevalvu zesango kunye neglobhu.

Kodwa phantsi koxinzelelo olufanayo kunye nobukhulu, i-valve yebhola ibiza kakhulu kune-valve yesango.