Isandulelo:I-valve yebhola yaphuma ngawo-1950.Ngokuthuthuka okusheshayo kwesayensi nobuchwepheshe, ukuthuthukiswa okuqhubekayo kobuchwepheshe bokukhiqiza kanye nesakhiwo somkhiqizo, sekuthuthuke ngokushesha kwaba uhlobo lwama-valve amakhulu eminyakeni engama-50 nje kuphela.Emazweni asentshonalanga athuthukile, ukusetshenziswa kwama-valve ebhola kuyanda unyaka nonyaka.

I-valve yebhola isetshenziselwa kakhulu ukusika, ukusabalalisa kanye nokushintsha indlela yokuhamba kwe-medium epayipini.Idinga kuphela ukujikeleziswa ngamadigri angama-90 futhi i-torque encane ingavalwa ngokuqinile.I-valve yebhola ifaneleka kakhulu ukusetshenziswa njenge-switch kanye ne-valve yokuvala.

Njengoba i-valve yebhola ngokuvamile isebenzisa i-raber, inayiloni kanye ne-polytetrafluoroethylene njengento yophawu lwesihlalo, izinga lokushisa layo lokusebenza likhawulelwe yimpahla yophawu lwesihlalo.Umsebenzi wokusika we-valve yebhola ufezwa ngokucindezela ibhola lensimbi ngokumelene nesihlalo se-valve yepulasitiki ngaphansi kwesenzo se-medium (i-valve yebhola elintantayo).Ngaphansi kwesenzo sengcindezi ethile yokuxhumana, indandatho yokuvala isihlalo se-valve ingena ku-elastic-plastic deformation ezindaweni zendawo.Lokhu kuguqulwa kunganxephezela ukunemba kokukhiqiza kanye nokuqina kwebhola, futhi kuqinisekise ukusebenza kokuvala kwe-valve yebhola.

Futhi ngenxa yokuthi indandatho yokuvala isihlalo se-valve ye-valve yebhola ngokuvamile yenziwe ngepulasitiki, lapho ukhetha ukwakheka nokusebenza kwe-valve yebhola, ukumelana nomlilo kanye nokumelana nomlilo kwe-valve yebhola kufanele kucatshangelwe, ikakhulukazi ku-petroleum, amakhemikhali, i-metallurgical. kanye neminye iminyango, emithonjeni yabezindaba evuthayo kanye neziqhumane.Uma ama-valve ebhola esetshenziswa emishinini nasezinhlelweni zamapayipi, kufanele kuqashelwe kakhulu ukumelana nomlilo nokuvikela umlilo.

Izici ze-valve yebhola

1. Inokumelana nokugeleza okuphansi kakhulu (empeleni uziro).2. Ngeke ibambeke lapho isebenza ngaphandle kwe-lubricant, ngakho-ke ingasetshenziswa ngendlela enokwethenjelwa emithonjeni eqala ukugqwala kanye noketshezi oluncane lokubilisa.3. Ingakwazi ukufeza ukuvalwa kwe-100% endaweni enkulu yokucindezela kanye nokushisa.4. Ingabona ukuvulwa nokuvala okushesha kakhulu, futhi isikhathi sokuvula nokuvala kwezinye izakhiwo singu-0.05 ~ 0.1s kuphela, ukuze kuqinisekiswe ukuthi singasetshenziswa ohlelweni oluzenzakalelayo lwebhentshi lokuhlola.Lapho i-valve ivulwa futhi ivalwa ngokushesha, akukho ukushaqeka ekusebenzeni.5. Ukuvalwa okuyindilinga kungamiswa ngokuzenzakalelayo endaweni.6. Indawo yokusebenza ivalwe ngokuthembekile ezinhlangothini zombili.7. Uma ivuleke ngokugcwele futhi ivaleke ngokugcwele, izindawo zokuvala zebhola kanye nesihlalo se-valve zihlukaniswa phakathi nendawo, ngakho okuphakathi nendawo okudlula i-valve ngesivinini esikhulu ngeke kubangele ukuguguleka kwendawo yokuvala.8. Ngesakhiwo esihlangene nesisindo esilula, singabhekwa njengesakhiwo se-valve esinengqondo kakhulu esifanelekile ohlelweni oluphakathi lokushisa oluphansi.9. Umzimba we-valve uno-symmetrical, ikakhulukazi uma isakhiwo somzimba we-valve sishiselwe, esingamelana kahle nokucindezeleka kwepayipi.10. Ucezu lokuvala lungakwazi ukumelana nomehluko wengcindezi ephezulu lapho uvala.11. I-valve yebhola enomzimba we-valve oshiselwe ngokugcwele ingangcwatshwa ngokuqondile emhlabathini, ukuze i-valve yangaphakathi ingaguguleki, futhi impilo yesevisi ephezulu ingafinyelela iminyaka engama-30.Yivalvu ekahle kakhulu yamapayipi kawoyela nawegesi yemvelo.

Ukusetshenziswa kwe-valve yebhola

Izici eziningi eziyingqayizivele zama-valve ebhola zinquma ukuthi ukusetshenziswa kwama-valve ebhola kubanzi.Imvamisa, ekulungisweni kwezindawo ezimbili, ukusebenza kokuvala okuqinile, udaka, ukuguga, imigudu enciphayo, ukuvulwa ngokushesha nokuvala izenzo (ukuvula nokuvala oku-1/4), ukunqanyulwa komfutho ophezulu (Ama-valve ebhola anconyiwe kumasistimu wamapayipi anengcindezi enkulu. umehluko), umsindo ophansi, i-cavitation kanye ne-gasification, inani elincane lokuvuza emkhathini, i-torque encane yokusebenza, nokumelana noketshezi oluncane.

I-valve yebhola ibuye ilungele uhlelo lwamapayipi esakhiwo sokukhanya, ukunqanyulwa kwengcindezi ephansi (umehluko omncane wengcindezi) kanye nendawo edlayo.Ama-valve ebhola angasetshenziswa futhi ekufakweni kwe-cryogenic (cryogenic) nasezinhlelweni zamapayipi.Ohlelweni lwamapayipi omoya-mpilo embonini ye-metallurgical, ama-valve ebhola athole ukwelashwa okuqinile kokukhipha amafutha ayadingeka.Lapho ulayini oyinhloko wepayipi likawoyela kanye nepayipi legesi udinga ukugqitshwa ngaphansi komhlaba, ivalve yebhola eshiselwe ngokugcwele kufanele isetshenziswe.Uma ukusebenza kokulungiswa kuyadingeka, i-valve yebhola enesakhiwo esikhethekile esinokuvulwa okumise okwe-V kufanele kukhethwe.Ku-petroleum, i-petrochemical, amakhemikhali, amandla kagesi, kanye nokwakhiwa kwamadolobha, ama-valve ebhola ensimbi ensimbi angakhethwa kumasistimu wamapayipi anezinga lokushisa elisebenzayo elingaphezu kwama-degree angu-200.

Umgomo wokusetshenziswa kwe-valve yebhola

Imigqa eyinhloko yokudlulisa uwoyela negesi yemvelo, amapayipi adinga ukuhlanzwa, futhi angcwatshwe ngaphansi komhlaba, khetha i-valve yebhola enama-passage kanye nesakhiwo esinama-welded;ungcwatshwe emhlabathini, khetha i-valve yebhola enokuxhumana okuhlanganisiwe okuhlanganisiwe noma uxhumano lwe-flange;ipayipi legatsha, khetha uxhumano lwe-flange, uxhumano oluhlanganisiwe, i-valve yebhola egcwele noma encishisiwe.Amapayipi kanye nempahla yokugcina kawoyela ocolisisiwe isebenzisa ama-valve amabhola ane-flanged.Epayipini legesi yedolobha kanye negesi yemvelo, i-valve yebhola elintantayo enoxhumano lwe-flange nokuxhumeka kwentambo yangaphakathi kuyakhethwa.Ohlelweni lwepayipi le-oksijini ohlelweni lwe-metallurgical, kuhle ukusebenzisa i-valve yebhola engashintshi eye yabhekana nokwelashwa okuqinile kokukhipha amafutha futhi i-flanged.Ohlelweni lwamapayipi kanye nomshini wokushisa okuphansi okuphakathi, i-valve yebhola yokushisa ephansi enekhava yevalvu kufanele ikhethwe.Ohlelweni lwamapayipi lweyunithi yokuqhekeka kweyunithi yokucwenga uwoyela, ivalvu yebhola yohlobo lwenduku yokuphakamisa ingakhethwa.Kumadivayisi nezinhlelo zamapayipi emidiya egqwalayo njenge-asidi ne-alkali ezinhlelweni zamakhemikhali, wonke amavalvu ensimbi engenasici enziwe ngensimbi engagqwali ye-austenitic kanye ne-PTFE njengendandatho yokuvala isihlalo se-valve kufanele kukhethwe.Ama-valve ebhola ensimbi ensimbi angasetshenziswa ezinhlelweni zamapayipi noma kumadivayisi okushisa okuphezulu okuphakathi ezinhlelweni ze-metallurgical, izinhlelo zamandla, izitshalo ze-petrochemical, kanye nezinhlelo zokushisisa zasemadolobheni.Lapho kudingekile ukulungiswa kokugeleza, igiya lezikelemu elishayelwa, i-pneumatic noma i-electric regulating ball valve ene-V-shape evulekayo ingakhethwa.

Isifinyezo:Ukusetshenziswa kwama-valve ebhola kubanzi kakhulu, izinhlobonhlobo kanye nenani lokusetshenziswa zisakhula, futhi zithuthuka ngendlela yokucindezela okuphezulu, izinga lokushisa eliphezulu, ububanzi obukhulu, ukusebenza kokuvala uphawu okuphezulu, impilo ende, ukusebenza okuhle kakhulu kokulungisa kanye nemisebenzi eminingi. kwevalvu eyodwa.Ukuthembeka kwayo nokunye Izinkomba zokusebenza sezifinyelele izinga eliphezulu, futhi sezithathe indawo yamavalvu esango, amaglobhu, namavalvu alawulayo.Ngenqubekelaphambili yobuchwepheshe yamavalvu amabhola, izosetshenziswa kabanzi esikhathini esifushane esibonakalayo, ikakhulukazi kumapayipi kawoyela negesi, ama-crackers ekuhluzeni uwoyela kanye nasembonini yenuzi.Ngaphezu kwalokho, ama-valve amabhola azoba enye yezinhlobo zamavalvu ezivelele emkhakheni wezinga elikhulu nelimaphakathi, ingcindezi ephakathi nendawo kanye nephansi kwezinye izimboni.