Iivalvu zebholazinezakhiwo ezininzi, kodwa ziyafana.Iindawo zokuvula kunye nokuvala zizingqukuva ezingqukuva, eziqulunqwe ikakhulu zizihlalo zevalvu, iibhola, iiringi zokutywina, iziqu zevalvu kunye nezinye izixhobo zokuSebenza.Isiqu sevalve sijikeleza i-90 degrees ukuphumeza ukuvulwa nokuvalwa kweevalvu.Iivalvu zebhola zisetyenziswa kwimibhobho ukuvala, ukusasaza, ukulawula ukuhamba nokutshintsha indlela yokuhamba kwayo.Isihlalo sevalve sisebenzisa iifom zokutywina zezihlalo ezahlukeneyo ngokweemeko ezahlukeneyo zokusebenza.Umzimba wevalve yebhola ye-O ixhotyiswe ngebhola enombindi ngomngxuma onobubanzi obulingana nobubanzi bombhobho.Ibhola inokujikeleza kwisihlalo sokutywina.Kukho i-annular elastic ring kumacala omabini kwicala lombhobho.Ivalve yebhola ye-V inesakhiwo esine-V.Undoqo wevalve liqokobhe eliyi-1/4 elingqukuva elinenotshi emile okwe-V.Inomthamo omkhulu wokuhamba, uluhlu olukhulu oluhlengahlengiswayo, amandla okucheba, kwaye inokuvalwa ngokuqinileyo.Ilungele ngakumbi iimeko zolwelo apho izinto eziphathekayo zinefibrous.
1. I-O-uhlobo lwesakhiwo sevalve yebhola:
Ivalve yebhola yohlobo lwe-O ilawula icala eliphakathi ngokujikelezisa ibhola ngama-90 °, ngenxa yoko, umngxuma odlulayo unokutshintshwa, ngaloo ndlela uqonde ukuvulwa nokuvalwa kwevalve yebhola.Ivalve yebhola ye-O ithatha uyilo oludadayo okanye olusisigxina.Amalungu ahambayo ahambelanayo ayenziwe ngezinto zokuzithambisa kunye ne-coefficient encinci ye-friction, ngoko ke i-torque yokusebenza incinci.Ukongeza, ukutywinwa kwexesha elide lokutywinwa kwegrisi kwenza umsebenzi ube bhetyebhetye.Izibonelelo zayo zemveliso zezi zilandelayo:
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Ivalve yebhola ye-O inokumelana nolwelo oluncinci
Iivalvu zebhola ngokubanzi zinezakhiwo ezibini: ubukhulu obugcweleyo kunye nedayamitha encitshisiweyo.Kungakhathaliseki ukuba yiyiphi isakhiwo, i-coefficient yokumelana nokuhamba kwe-valve yebhola incinci.Iivalvu zebhola eziqhelekileyo zithe tye, zikwabizwa ngokuba ziivalve zebhola ezigcweleyo.Ububanzi bomjelo bulingana nobubanzi obungaphakathi bombhobho, kwaye ilahleko yokuchasana kuphela ukuchasana kwe-friction yobude obufanayo bombhobho.Le valve yebhola ineyona ndlela incinci yokuxhathisa ulwelo kuzo zonke iivalvu.Kukho iindlela ezimbini zokunciphisa ukuchasana kwenkqubo yokubhobhoza: enye kukunciphisa izinga lokuhamba kwamanzi ngokunyusa ububanzi bombhobho kunye nobubanzi bevalve, okuya kwandisa kakhulu iindleko zenkqubo yokubhobhoza.Okwesibini kukunciphisa ukuchasana kwendawo yevalve, kwaye iivalve zebhola zilona khetho lungcono.
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Ivalve yebhola ye-O itshintsha ngokukhawuleza nangokufanelekileyo
Ivalve yebhola idinga kuphela ukujikeleza i-90 degrees ukuvula ngokupheleleyo okanye ukuvala ngokupheleleyo, ngoko inokuvulwa kwaye ivalwe ngokukhawuleza.
- Ivalve yebhola ye-O inomsebenzi olungileyo wokutywina
Uninzi lwezihlalo zevalve yebhola zenziwe ngezinto ezilastiki ezifana ne-PTFE, ezidla ngokubizwa ngokuba ziivalve zebhola ezitywiniweyo.Iivalvu zebhola ezithambileyo zisebenza kakuhle kwaye azifuni uburhabaxa obuphezulu kunye nokuchaneka komgangatho wokutywina komphezulu.
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Ivalve yebhola ye-O inobomi obude benkonzo
Ngenxa yokuba i-PTFE/F4 ineempawu ezilungileyo zokuzithambisa, i-coefficient yokukhuhlana kunye nesphere incinci.Ngenxa yokuphuculwa kweteknoloji yokucubungula, uburhabaxa bebhola buyancipha, ngaloo ndlela kwandisa kakhulu ubomi benkonzo yevalve yebhola.
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Ivalve yebhola ye-O inokuthembeka okuphezulu
Ukutywinwa kwebhola kunye nesihlalo se-valve asiyi kubandezeleka ngenxa yemikrwelo, ukugqoka ngokukhawuleza kunye nezinye iimpazamo;
Emva kokuba i-valve stem iguqulelwe kuhlobo olwakhelwe ngaphakathi, ingozi yengozi yokuba i-valve stem inokubhabha ngenxa yokukhulula i-packing gland phantsi kwesenzo soxinzelelo lwe-fluid esusiwe;
Iivalvu zebhola ezinezakhiwo ezichasene ne-anti-static kunye nokumelana nomlilo zingasetyenziswa kwimibhobho yokuthutha ioli, igesi yendalo, kunye negesi yamalahle.
Undoqo wevalve (ibhola) yevalve yodidi lwe-O ingqukuva.Ukusuka kwimbono yesakhiwo, isihlalo sebhola sifakwe kwisihlalo kwicala lomzimba wevalve xa utywinwa.Amalungu ahambayo ahambelanayo ayenziwe ngezinto zokuzithambisa kunye ne-coefficient encinci ye-friction, ngoko ke i-torque yokusebenza incinci.Ukongeza, ukutywinwa kwexesha elide lokutywinwa kwegrisi kwenza umsebenzi ube bhetyebhetye.Ngokuqhelekileyo isetyenziselwa ukulungiswa kweendawo ezimbini, iimpawu zokuhamba zivula ngokukhawuleza.
Xa ivalve yebhola yohlobo lwe-O ivuleke ngokupheleleyo, omabini amacala akathintelwa, enza umjelo othe tye otywinwe ngeendlela ezimbini.Inomsebenzi ongcono kakhulu "wokuzicoca" kwaye ifanelekile kwizihlandlo ezibini zokusika zemithombo yeendaba engcolileyo kunye ne-fiber.I-core yebhola ihlala idala i-friction kunye nevalve ngexesha lokuvula kunye nokuvala inkqubo yevalve.Kwangaxeshanye, itywina phakathi kondoqo wevalve kunye nesihlalo sevalve iphunyezwa ngamandla otywino angaphambi kokuqiniswa kwesitulo sevalve ecinezela umbindi webhola.Nangona kunjalo, ngenxa yesitulo sevalve yokutywina ethambileyo, iipropathi ezigqwesileyo zoomatshini kunye nezomzimba zenza ukusebenza kwayo kokutywina kulunge ngakumbi.
2.Ulwakhiwo lwevalvu yebhola emile okwe-V:
Undoqo webhola wevalve yebhola emile okwe-V unesakhiwo esinobume obungu-V.Undoqo wevalve liqokobhe eliyi-1/4 elingqukuva elinenotshi emile okwe-V.Inomthamo omkhulu wokuhamba, uluhlu olukhulu oluhlengahlengiswayo, amandla okucheba, kwaye inokuvalwa ngokuqinileyo.Ilungele ngokukodwa ulwelo.Iimeko apho imathiriyeli inefibrous.Ngokubanzi, iivalve zebhola ezimilise u-V zizivalvu zebhola ezinetywina elinye.Ayilungelanga ukusetyenziswa ngeendlela ezimbini.
Kukho ikakhulu 4 uhlobo inotshi V-ezimile, 15 isidanga, 30 isidanga, 60 isidanga, 90 isidanga.
Umphetho omile okwe-V usika ukungcola.Ngethuba lokujikeleza kwebhola, umgca wemela obukhali owenziwe ngu-V webhola u-tangent ukuya kwisihlalo sevalve, ngaloo ndlela unqumla imicu kunye nezinto eziqinileyo kulwelo.Nangona kunjalo, iivalve zebhola eziqhelekileyo azinawo lo msebenzi, ngoko kulula ukubangela ukungcola kwefiber ukuba kubambeke xa kuvalwa, kubangele ukugcinwa kunye neengxaki zokulungisa.Ugcino yingxaki enkulu.Undoqo wevalve wevalve yebhola emile okwe-V awuyi kubanjwa ziintsinga.Ukongezelela, ngenxa yoxhumo lwe-flange, kulula ukudibanisa kunye nokudibanisa ngaphandle kwezixhobo ezikhethekileyo, kunye nokugcinwa kulula.xa ivalve ivaliwe.Kukho isiphumo se-scissor esimilise okwe-wedge phakathi kwenotshi emile okwe-V kunye nesitulo sevalvu, engenamsebenzi wokuzicoca kuphela kodwa ikwathintela undoqo webhola ekubeni uxinge.Umzimba wevalve, isigqubuthelo sevalvu kunye nesihlalo sevalve yamkela intsimbi yokukhomba-kwindawo yokuma ngokulandelelana, kwaye kusetyenziswa i-coefficient encinci ye-friction.I-valve stem is spring-loaded, ngoko i-torque yokusebenza incinci kwaye izinzile kakhulu.
I-valve yebhola ye-V yi-right-angle isakhiwo esijikelezayo esinokufikelela ekulawuleni ukuhamba.Iyakwazi ukufikelela kwiidigri ezahlukeneyo zomlinganiselo ngokwe-angle engu-V yebhola e-V.Ivalve yebhola emile okwe-V isetyenziswa ngokubanzi kunye ne-valve actuators kunye ne-positioners ukuphumeza ulungelelwaniso olulinganayo., Undoqo wevalve enemilo engu-V yeyona ifanelekileyo kwizihlandlo ezahlukeneyo zohlengahlengiso.Inomlinganiselo omkhulu olinganisiweyo wokuhamba, umlinganiselo omkhulu ohlengahlengiswayo, isiphumo esihle sokutywinwa, i-zero ubuntununtunu ekusebenzeni kohlengahlengiso, ubungakanani obuncinci, kwaye inokufakwa ngokuthe nkqo okanye ngokuthe tye.Ilungele ukulawula igesi, umphunga, ulwelo kunye nezinye imidiya.I-valve yebhola ye-V yi-right-angle isakhiwo esijikelezayo, esakhiwe ngumzimba we-valve efana ne-V, i-actuator ye-pneumatic, i-positioner kunye nezinye izixhobo;inophawu lokuqukuqela oluyindalo olumalunga nomlinganiselo olinganayo;Yamkela ulwakhiwo olunombilini, inetorque encinci yokuqalisa, kwaye inoSensitivity kunye nesantya sokuva, isakhono sokucheba esikhulu.