umgaqo wokusebenza
A ivalvu yebhabhathaneluhlobo lwevalvu elungisa ukuhamba kwesixhobo ngokusivula okanye ukusivala ngokujika umva nangaphambili malunga nama-90 degrees. Ukongeza kuyilo lwayo olulula, ubungakanani bayo obuncinci, ubunzima obulula, ukusetyenziswa kwezinto eziphantsi, ukufakwa okulula, i-torque ephantsi yokuqhuba, kunye nokusebenza ngokukhawuleza,ivalvu yebhabhathaneikwasebenza kakuhle ngokwemigaqo yokuhamba kwamanzi ngelixa ikwanomgangatho olungileyo wokuvala nokutywina. yenye yezona ntlobo zikhawulezayo zevalvu. Ukusetyenziswa kweiivalvu zebhabhathanekuqhelekile.

Ukusetyenziswa kwayo kuyaqhubeka nokuhlukahluka nokwanda, kwaye itshintshela kubushushu obuphezulu, uxinzelelo oluphezulu, ububanzi obukhulu, ukuvalwa okuphezulu, ubomi obude, iimpawu zohlengahlengiso ezibalaseleyo, kunye nemisebenzi emininzi yevalvu. Ngoku inezinga eliphezulu lokuthembeka kunye nezinye iimpawu zokusebenza.

Ukusebenza kweevalvu zeebhabhathane kuphucukile ngenxa yokusetyenziswa kwerabha yokwenziwa enganyangekiyo ngamakhemikhali. Ekubeni irabha yokwenziwa ineempawu zokuxhathisa ukugqwala, ukumelana nokukhukuliseka, ubungakanani obuzinzileyo, ukuqina okuhle, ukulula kokwakheka, kunye nexabiso eliphantsi, irabha yokwenziwa eneempawu ezahlukeneyo inokukhethwa ngokuhambelana neemfuno ezahlukeneyo zokusetyenziswa ukuze kuhlangatyezwane neemeko zokusebenza kweevalvu zeebhabhathane.

Ekubeni i-polytetrafluoroethylene (PTFE) inokumelana okukhulu nokugqwala, ukusebenza okuzinzileyo, ukumelana nokwaluphala, i-coefficient ephantsi yokungqubana, ukulula kokubumba, kunye nokuzinza kobukhulu, ukusebenza kwayo iyonke kunokuphuculwa ngokuzalisa kunye nokongeza izixhobo ezifanelekileyo ukuze kufezekiswe amandla angcono kunye nokungqubana. Irabha yokwenziwa ineengxaki ezithile, kodwa izixhobo zokutywina iivalvu zebhabhathane ezine-coefficient ephantsi ziyazijikeleza. Ukuze kuphuculwe ukusebenza kweevalvu zebhabhathane, izixhobo zepolymer eziphezulu zemolekyuli, ezifana ne-polytetrafluoroethylene, kunye nezinto zazo ezilungisiweyo zokuzalisa ziye zasetyenziswa kakhulu. Ngoku iphuculwe, kwaye ivelufa yebhabhathane iveliswe enomlinganiselo omkhulu wobushushu kunye noxinzelelo, ukusebenza okuthembekileyo kokutywina, kunye nobomi obude obuluncedo.

Iivalvu zeebhabhathane ezitywinwe ngentsimbi ziye zaphucuka kakhulu ukuze kuhlangatyezwane neemfuno zezicelo zoshishino ezifana nobushushu obuphezulu nobuphantsi, ukukhukuliseka okunamandla, kunye nobomi obude. Iivalvu zeebhabhathane ezitywinwe ngentsimbi ziye zasetyenziswa kakhulu kwiindawo zoshishino ezifana nobushushu obuphezulu nobuphantsi, ukukhukuliseka okunamandla, kunye nobomi obude ngenxa yokusetyenziswa kokuxhathisa ubushushu obuphezulu, ukuxhathisa ubushushu obuphantsi, ukuxhathisa ukugqwala okunamandla, ukuxhathisa ukukhukuliseka okunamandla, kunye nezinto ze-alloy ezinamandla aphezulu. Ukuze kuphuculwe iteknoloji yeevalvu zeebhabhathane, ububanzi obukhulu (9–750mm), uxinzelelo oluphezulu (42.0MPa), kunye nobubanzi bobushushu obubanzi (-196–606°C) iivalvu zeebhabhathane zaqala ukuvela.

Ivalvu yebhabhathane inokumelana kancinci nokugeleza kwamanzi xa ivuliwe ngokupheleleyo. Iivalvu zebhabhathane zihlala zisetyenziswa kwicandelo lokulawula ububanzi obukhulu kuba ziyakwazi ukulawula ukuhamba kwamanzi kwiindawo eziphakathi kwe-15° kunye ne-70°.

Uninzi lweevalvu zebhabhathane lungasetyenziswa kunye nee-media eziqulathe amasuntswana aqinileyo axhonyiweyo kuba ipleyiti yebhabhathane ihamba ngendlela yokusula. Ingasetyenziselwa nee-granular kunye ne-powdery media, kuxhomekeke kumandla esitywini.

Iivalvu zebhabhathane ziluncedo ekulawuleni ukuhamba kwamanzi. Xa ukhetha ivalvu yebhabhathane, kubalulekile ukuqwalasela ngokupheleleyo impembelelo yokulahleka koxinzelelo kwinkqubo yepayipi kunye namandla epleyiti yebhabhathane ukuze imelane noxinzelelo lwendlela yokuhambisa amanzi xa ivaliwe kuba ukulahleka koxinzelelo lwevalvu yebhabhathane kwipayipi kukhulu kakhulu, malunga nokuphindwe kathathu kunokwevalvu yesango. Ubushushu bokusebenza bezinto zesihlalo se-elastic kumaqondo obushushu aphezulu kufuneka buqwalaselwe.

Ivalvu yebhabhathane inesakhiwo esifutshane kunye nokuphakama okuphantsi. Iyavula kwaye ivale ngokukhawuleza kwaye ineempawu ezilungileyo zokulawula ulwelo. Ukwenza iivalvu ezinkulu kulungele kakhulu uyilo lwesakhiwo sevalvu yebhabhathane. Inyathelo elibaluleke kakhulu ekukhetheni ivalvu yebhabhathane eya kusebenza ngokufanelekileyo nangokufanelekileyo xa isetyenziselwa ukulawula ukuhamba kwamanzi kukukhetha uhlobo olufanelekileyo kunye neenkcukacha.

Iivalvu zebhabhathane zihlala zicetyiswa ukuba zisetyenziswe ekuqhobosheni, ekulawuleni ulawulo, nakwimidiya yodaka apho kufuneka ubude obufutshane besakhiwo, isantya sokuvula nokuvala ngokukhawuleza, kunye nokunqunyulwa koxinzelelo oluphantsi (umahluko omncinci woxinzelelo). Iivalvu zebhabhathane zingasetyenziswa kunye nemidiya erhabaxa, imijelo enobubanzi obuphantsi, ingxolo ephantsi, ukugalela umoya kunye nokufuma, ukuvuza okuncinci komoya, kunye nokulungiswa kweendawo ezimbini. Ukulungiswa kwe-throttle xa usebenza phantsi kweemeko ezingaqhelekanga, njengaxa utywina ngokuqinileyo, ukuguguleka okukhulu, amaqondo obushushu aphantsi kakhulu, njl.