Intshayelelo:Ivalve yebhola yaphuma ngeminyaka yoo-1950.Ngophuhliso olukhawulezayo lwenzululwazi kunye nobuchwepheshe, ukuphuculwa okuqhubekayo kobugcisa bemveliso kunye nesakhiwo semveliso, iphuhliswe ngokukhawuleza ibe luhlobo lwevalvu enkulu kwiminyaka engama-50 nje.Kumazwe asentshona aphuhlileyo, ukusetyenziswa kweevalvu zebhola kuyanda unyaka nonyaka.

Ivalve yebhola isetyenziswa ikakhulu ukusika, ukusasaza kunye nokutshintsha indlela yokuhamba kwe medium kumbhobho.Ifuna kuphela ukujikelezwa kwe-90 degrees kunye ne-torque encinci ingavalwa ngokuqinileyo.Ivalve yebhola yeyona ifaneleke kakhulu ukusetyenziswa njengokutshintsha kunye nevalve yokuvala.

Ekubeni i-valve yebhola ihlala isebenzisa irabha, i-nylon kunye ne-polytetrafluoroethylene njengento yokutywinwa kwesihlalo, ubushushu bayo bokusebenza bukhawulelwe yimpahla yesitywina sokuhlala.Umsebenzi wokunqunyulwa kwevalve yebhola ufezekiswa ngokucinezela ibhola yentsimbi ngokuchasene nesihlalo sevalve yeplastiki phantsi kwesenzo se-medium (ivalve yebhola edadayo).Ngaphantsi kwesenzo soxinzelelo oluthile loqhagamshelwano, i-valve seat sealing ring idlula i-elastic-plastic deformation kwiindawo zendawo.Olu tshintsho lunokubuyisela ukuchaneka kokuveliswa kunye noburhabaxa bebhola, kunye nokuqinisekisa ukusebenza kokutywinwa kwevalve yebhola.

Kwaye ngenxa yokuba ikhonkco lokutywina isihlalo sevalve yevalve yebhola ngokuqhelekileyo yenziwe ngeplastiki, xa ukhetha isakhiwo kunye nokusebenza kwevalve yebhola, ukumelana nomlilo kunye nokumelana nomlilo kwevalve yebhola kufuneka kuthathelwe ingqalelo, ngakumbi kwi-petroleum, ikhemikhali, i-metallurgical. kunye namanye amasebe, kumajelo osasazo anokutsha kunye neziqhushumbisi.Ukuba iivalve zebhola zisetyenziselwa izixhobo kunye neenkqubo zombhobho, ingqwalasela engakumbi kufuneka ihlawulwe ekuchaseni umlilo kunye nokukhusela umlilo.

Iimpawu zevalve yebhola

1. Unokumelana nokuqukuqela okusezantsi (enyanisweni nguziro).2. Ayiyi kuxinga xa isebenza ngaphandle kwe-lubricant, ngoko inokufakwa ngokuthembekileyo kwimithombo yeendaba ezonakalisayo kunye nolwelo oluphantsi lokubilisa.3. Iyakwazi ukufezekisa ukutywinwa kwe-100% kuxinzelelo olukhulu kunye noluhlu lweqondo lokushisa.4. Inokuqonda ukuvulwa nokuvalwa kwe-ultra-fast, kwaye ixesha lokuvula kunye nokuvalwa kwezinye izakhiwo kuphela i-0.05 ~ 0.1s, ukwenzela ukuba kuqinisekiswe ukuba ingasetyenziselwa inkqubo yokuzenzekelayo yebhentshi yokuvavanya.Xa ivalve ivulwa kwaye ivalwe ngokukhawuleza, akukho nkothuko ekusebenzeni.5. Ukuvalwa kwe-spherical kunokubekwa ngokuzenzekelayo kwindawo.6. Isixhobo esisebenzayo sitywinwe ngokuthembekileyo kumacala omabini.7. Xa ivuliwe ngokupheleleyo kwaye ivalwe ngokupheleleyo, iindawo zokutywina zebhola kunye nesihlalo sevalve zibekwe zodwa kumbindi, ngoko ke isiphakathi esidlula kwivalve ngesantya esiphezulu asiyi kubangela ukhukuliseko lomphezulu wokutywina.8. Ngesakhiwo esincinci kunye nobunzima obulula, sinokuthathwa njengesona sakhiwo se-valve esifanelekileyo esifanelekileyo kwinkqubo ephakathi kweqondo lokushisa eliphantsi.9. Umzimba wevalve u-symmetrical, ngakumbi xa isakhiwo somzimba wevalve sidityanisiwe, esinokumelana kakuhle noxinzelelo lombhobho.10. Isiqwenga sokuvala sinokumelana nokwahlukana koxinzelelo oluphezulu xa uvala.11. I-valve yebhola enomzimba we-valve edibeneyo ingangcwatywa ngokuthe ngqo emhlabeni, ukwenzela ukuba i-valve yangaphakathi ingabikho, kwaye ubomi benkonzo ephezulu bunokufikelela kwiminyaka engama-30.Yeyona valve ifanelekileyo yeoli kunye nemibhobho yegesi yendalo.

Ukusetyenziswa kwevalve yebhola

Iimpawu ezininzi ezizodwa zeevalvu zebhola zigqiba ukuba ukusetyenziswa kweevalve zebhola kubanzi.Ngokuqhelekileyo, uhlengahlengiso lweendawo ezimbini, ukutywinwa okungqongqo, udaka, ukunxiba, ukucutheka kwemijelo, ukuvulwa ngokukhawuleza nokuvala izenzo (1/4 ukuvulwa nokuvala), ukunqunyulwa koxinzelelo oluphezulu (iivalvu zebhola zicetyiswa kwiinkqubo zemibhobho ezinoxinzelelo olukhulu. umahluko), ingxolo ephantsi, i-cavitation kunye ne-gasification, inani elincinci lokuvuza emoyeni, i-torque encinci yokusebenza, kunye nokuchasana kwamanzi amancinci.

Ivalve yebhola ikwafanelekile kwinkqubo yepayipi yesakhiwo sokukhanya, ukunqunyulwa koxinzelelo oluphantsi (umahluko omncinci woxinzelelo) kunye ne-corrosive medium.Iivalvu zebhola nazo zingasetyenziswa kwi-cryogenic (cryogenic) ufakelo kunye neenkqubo zombhobho.Kwinkqubo yemibhobho ye-oksijini kwishishini le-metallurgical, iivalve zebhola eziye zafumana unyango olungqongqo lwe-degreasing luyafuneka.Xa umgca ongundoqo kumbhobho we-oyile kunye nombhobho werhasi kufuneka ungcwatywe phantsi komhlaba, kufuneka kusetyenziswe ivalve yebhola edityanisiweyo.Xa kufuneka kwenziwe uhlengahlengiso, i-valve yebhola enesakhiwo esikhethekileyo esinokuvulwa kwe-V kufuneka ikhethwe.Kwi-petroleum, i-petrochemical, ikhemikhali, amandla ombane, kunye nokwakhiwa kwedolophu, iivalve zebhola zokutywina zetsimbi-zentsimbi zingakhethwa kwiinkqubo zemibhobho kunye nokushisa okusebenzayo ngaphezu kwama-200 degrees.

Umgaqo wokusetyenziswa kwevalve yebhola

Imigca ephambili yokuhanjiswa kweoyile kunye negesi yendalo, imibhobho efuna ukucocwa, kwaye ingcwatywe phantsi komhlaba, khetha ivalve yebhola enazo zonke iipaseji kunye nesakhiwo esine-welded;ungcwatywe emhlabeni, khetha ivalve yebhola enomdibaniso odityanisiweyo wepaseji yonke okanye uqhagamshelo lweflange;umbhobho wesebe, khetha uqhagamshelo lwe-flange, uqhagamshelo oludityanisiweyo, olugcweleyo okanye oluncitshisiweyo lwevalve yebhola.Imibhobho kunye nezixhobo zokugcina i-oyile esulungekisiweyo zisebenzisa iivalvu zebhola ezineflanged.Kumbhobho werhasi yesixeko kunye negesi yendalo, ivalve yebhola edadayo enoqhagamshelo lweflange kunye noqhagamshelo lwangaphakathi lomsonto lukhethiwe.Kwinkqubo yombhobho we-oksijini kwinkqubo ye-metallurgical, kuyacetyiswa ukuba kusetyenziswe ivalve yebhola esisigxina eye yafumana unyango olungqongqo lwe-degreasing kunye ne-flanged.Kwinkqubo yombhobho kunye nesixhobo somgangatho ophantsi wobushushu, ivalve yebhola ephantsi yobushushu enesigqubuthelo sevalvu kufuneka ikhethwe.Kwinkqubo yombhobho yeyunithi yokuqhekeka kweyunithi yeyunithi yokusulungekisa i-oyile, intonga yokuphakamisa uhlobo lwevalve yebhola ingakhethwa.Kwizixhobo kunye neenkqubo zemibhobho yemithombo yeendaba ezitshabalalisayo ezifana ne-asidi kunye ne-alkali kwiinkqubo zemichiza, zonke iivalvu zensimbi ezingenasici ezenziwe nge-austenitic stainless steel kunye ne-PTFE njengekhonkco lokutywina isihlalo sevalve kufuneka kukhethwe.Iivalvu zentsimbi zokutywina zentsimbi zingasetyenziswa kwiinkqubo zemibhobho okanye izixhobo zobushushu obuphezulu obuphakathi kwiinkqubo zetsimbi, iinkqubo zamandla, izityalo zepetrochemical, kunye neenkqubo zokufudumeza ezidolophini.Xa kufuneka uhlengahlengiso lokuhamba, igiya yeentshulube eqhutywayo, i-pneumatic okanye ivalve yebhola elawulayo yombane enokuvulwa okumise okwe-V ingakhethwa.

Isishwankathelo:Ukusetyenziswa kweevalvu zebhola kubanzi kakhulu, iindidi kunye nobungakanani bokusetyenziswa zisakhula, kwaye zikhula kwicala loxinzelelo oluphezulu, ubushushu obuphezulu, ububanzi obukhulu, ukusebenza kokutywinwa okuphezulu, ubomi obude, ukusebenza kakuhle kohlengahlengiso kunye nemisebenzi emininzi. yevalve enye.Ukuthembeka kwayo kunye nezinye Iimpawu zokusebenza zifikelele kwinqanaba eliphezulu, kwaye ziye zatshintsha ngokuyinxenye iivalvu zesango, iivalvu zeglowubhu, kunye neevalvu zokulawula.Ngenkqubela-phambili yobugcisa yeevalvu zebhola, iya kusetyenziswa kakhulu kwixesha elifutshane elibonakalayo, ngakumbi kwimibhobho ye-oyile nerhasi, iicrackers ekusulungeni i-oyile nakwishishini lenyukliya.Ukongeza, iivalvu zebhola ziya kuba zezinye zeentlobo zevalvu eziphambili kumabala amakhulu kunye nephakathi, uxinzelelo oluphakathi kunye oluphantsi kwamanye amashishini.