Zisebenza njani izivalo zebhabhathane?

Ivalve yebhabhathaneluhlobo lwevalve esebenzisa idiskhi yokuvula kunye nenxalenye yokuvala ukubuyisela malunga ne-90 ° ukuvula, ukuvala okanye ukulungelelanisa izinga lokuhamba kwendawo. Ivalve yebhabhathane ayinalo nje isakhiwo esilula, ubungakanani obuncinci, ubunzima obuncinci, ukusetyenziswa kwezinto eziphantsi, ubungakanani obuncinci bofakelo, itorque encinci yokuqhuba, ukusebenza okulula kunye nokukhawulezayo, kodwa inomsebenzi wokulawula ukuhamba kakuhle kunye neempawu zokuvala, kwaye yenye yezona zinto zikhula ngokukhawuleza. iintlobo zevalvu kule minyaka ilishumi idlulileyo. Iivalve zebhabhathane zisetyenziswa kakhulu. Iindidi kunye nobuninzi bokusetyenziswa kwayo ziyaqhubeka nokwandisa, kwaye ziphuhlise ukushisa okuphezulu, uxinzelelo oluphezulu, ububanzi obukhulu, ukuxinwa okuphezulu, ubomi obude, iimpawu ezibalaseleyo zokulawula, kunye nemisebenzi emininzi yevalve enye. Ukuthembeka kwayo kunye nezinye izalathisi zokusebenza zifikelele kwinqanaba eliphezulu.

Ngokusetyenziswa kwerabha yokwenziwa kweekhemikhali kwikhemikhali ukuyaiivalve butterfly, ukusebenza kweiivalve butterflyiphuculwe. Ngenxa yokuba irabha eyenziweyo ineempawu zokuxhathisa umhlwa, ukumelana nokhukuliseko, ukuzinza komda, ukomelela okulungileyo, ukubunjwa lula, ixabiso eliphantsi, njl., irabha yokwenziwa eneempawu ezahlukeneyo inokukhethwa ngokweemfuno ezahlukeneyo zokusetyenziswa ukuhlangabezana neemeko zokusebenzaiivalve butterfly.

Ngenxa yokuba i-polytetrafluoroethylene (PTFE) inokumelana ne-corrosion eyomeleleyo, ukusebenza okuzinzileyo, akulula ukuguga, i-coefficient ephantsi ye-friction, kulula ukwenza, ukuzinza kwe-dimensional, kwaye inokuphucula iipropati zayo ezibanzi ngokuzalisa kunye nokongeza izinto ezifanelekileyo, i-butterfly valve yokutywina izinto ezingcono. amandla kunye ne-coefficient ye-friction ephantsi inokufumaneka, kwaye imida yerabha yokwenziwa iyoyiswa, ngoko ke i-polymer polymeric material emelwe yi-PTFE kunye nokuzaliswa kwayo kwezinto eziguquliweyo ziye zasetyenziswa ngokubanzi kwi-valve yebhabhathane, ukwenzela ukuba ukusebenza kwevalve yebhabhathane kuye kwagqitywa. iphuculwe ngakumbi.Iivalve zebhabhathanengoluhlu olubanzi lwamaqondo obushushu kunye noxinzelelo, ukusebenza okuthembekileyo kokutywinwa kunye nobomi benkonzo obude benziwe.

Ukuze kuhlangatyezwane neemfuno zezicelo zemizi-mveliso ezifana nobushushu obuphezulu nobuphantsi, ukhukuliseko olunamandla, kunye nobomi obude, iivalve zebhabhathane zentsimbi ziye zaphuhliswa kakhulu. Ngokusetyenziswa kokumelana nobushushu obuphezulu, ukuxhathisa ubushushu obuphantsi, ukuxhathisa okuqinileyo komhlwa, ukuxhathisa okuqinileyo kokukhukuliseka, kunye nezixhobo eziphezulu zamandla ealloyi kwiivalvu zebhabhathane, iivalve zebhabhathane ezitywiniweyo ziye zasetyenziswa kakhulu kwimimandla yemizi-mveliso efana nobushushu obuphezulu nobuphantsi, ukhukuliseko olunamandla. , kunye nobomi obude, kunye neevalve zebhabhathane ezinobubanzi obukhulu (9 ~ 750mm), uxinzelelo oluphezulu (42.0MPa) kunye noluhlu olubanzi lobushushu (-196 ~ 606 ° C) luye lwavela, ukuze iteknoloji yeevalve zebhabhathane ifikelele kwinqanaba elitsha. .

Xa ivalve yebhabhathane ivulwe ngokupheleleyo, inokumelana nokuhamba okuncinci. Xa ukuvulwa kuphakathi kwe-15 ° ~ 70 °, ingasetyenziselwa ukulawula ukuhamba ngokukhawuleza, ngoko ke ukusetyenziswa kwevalve yebhabhathane kuxhaphake kakhulu kwintsimi yohlengahlengiso olukhulu lobubanzi.

Ngenxa yentshukumo esulekayo yepleyiti yebhabhathane yevalve yebhabhathane, iivalvu ezininzi zebhabhathane zingasetyenziselwa imidiya eneziqina ezimisiweyo. Ngokuxhomekeke kumandla esitywina, ingasetyenziselwa i-powder kunye ne-granular media.

Iivalve zebhabhathane zifanelekile kulawulo lokuhamba. Ngenxa yokuba ilahleko yoxinzelelo lwevalve yebhabhathane kumbhobho inkulu ngokwentelekiso, malunga nokuphindaphinda kathathu kwevalve yesango, xa ukhetha ivalve yebhabhathane, impembelelo yelahleko yoxinzelelo lwenkqubo yombhobho kufuneka iqwalaselwe ngokupheleleyo, kunye namandla evalve yesango. ipleyiti yebhabhathane yokuthwala uxinzelelo lwemibhobho ephakathi xa ivaliwe kufuneka nayo ithathelwe ingqalelo. Ukongezelela, ukulinganiselwa kweqondo lokushisa lokusebenza apho izinto zokuhlala ze-elastomeric zinokuthi zifakwe kumaqondo aphezulu aphezulu kufuneka zithathelwe ingqalelo.

Ivalve yebhabhathane inobude obuncinci bokwakha kunye nokuphakama ngokubanzi, ukuvulwa okukhawulezayo kunye nezantya zokuvala, kunye neempawu ezilungileyo zokulawula ulwelo. Umgaqo-siseko we-butterfly valves ufanelekile kakhulu ekwenzeni iivalve ezinkulu. Xa ivalve yebhabhathane kufuneka isetyenziswe ukulawula izinga lokuhamba, kubalulekile ukukhetha ubungakanani obuchanekileyo kunye nohlobo lwevalve yebhabhathane ukuze isebenze ngokufanelekileyo nangempumelelo.

Ngokuqhelekileyo, kwi-throttling, ukulawulwa kokulawula kunye nodaka oluphakathi, ubude besakhiwo bufutshane, isantya sokuvula kunye nokuvala ngokukhawuleza, kunye nokunqunyulwa kwengcinezelo ephantsi (umahluko omncinci woxinzelelo) kuyadingeka, kwaye i-valve butterfly inconywa. Iivalve ze-Butterfly zingasetyenziselwa xa kukho ukulungiswa kweendawo ezimbini, umjelo oncitshisiweyo we-diameter, ingxolo ephantsi, i-cavitation kunye ne-vaporization, inani elincinci lokuvuza kwi-atmosphere, kunye ne-media abrasive. Ngaphantsi kweemeko ezikhethekileyo zokusebenza, ukulungiswa kwe-throttling, okanye ukutywinwa okungqongqo, ukunxiba okunzulu, ukushisa okuphantsi (cryogenic) kunye nezinye iimeko zokusebenza.