Isandulelo:I-ball valve yaphuma ngawo-1950. Ngokuthuthuka okusheshayo kwesayensi nobuchwepheshe, ukuthuthukiswa okuqhubekayo kobuchwepheshe bokukhiqiza kanye nesakhiwo somkhiqizo, iye yathuthuka ngokushesha yaba uhlobo olukhulu lwe-valve eminyakeni engama-50 kuphela. Emazweni athuthukile asentshonalanga, ukusetshenziswa kwama-ball valve kuyanda unyaka nonyaka.
Ivalvu yebhola isetshenziswa kakhulu ukusika, ukusabalalisa nokushintsha indlela yokugeleza kwe-medium epayipini. Idinga ukujikeleziswa ngama-degree angu-90 kuphela futhi i-torque encane ingavalwa kahle. Ivalvu yebhola ifaneleka kakhulu ukusetshenziswa njengeswishi kanye nevalvu yokuvala.
Njengoba ivalvu yebhola ivame ukusebenzisa irabha, i-nylon kanye ne-polytetrafluoroethylene njengezinto zokuvala isihlalo, izinga lokushisa layo lokusebenza lilinganiselwe yizinto zokuvala isihlalo. Umsebenzi wokunqunywa kwevalvu yebhola ufezwa ngokucindezela ibhola lensimbi esihlalweni sevalvu yepulasitiki ngaphansi kwesenzo se-medium (ivalvu yebhola entantayo). Ngaphansi kwesenzo sokucindezela okuthile kokuthintana, indandatho yokuvala isihlalo sevalvu idlula ekuguqulweni kwepulasitiki okunwebekayo ezindaweni zasendaweni. Lokhu kuguqulwa kungabuyisela ukunemba kokukhiqiza kanye nokuqina kobuso bebhola, futhi kuqinisekise ukusebenza kokuvala kwevalvu yebhola.
Futhi ngenxa yokuthi indandatho yokuvala isihlalo se-valve ye-ball valve ivame ukwenziwa ngepulasitiki, lapho ukhetha isakhiwo kanye nokusebenza kwe-ball valve, ukumelana nomlilo kanye nokumelana nomlilo kwe-ball valve kufanele kucatshangelwe, ikakhulukazi eminyangweni kaphethiloli, amakhemikhali, i-metallurgical kanye neminye, ezindaweni ezivuthayo neziqhumayo. Uma ama-ball valve esetshenziswa ezinhlelweni zemishini kanye namapayipi, kufanele kuqashelwe kakhulu ukumelana nomlilo kanye nokuvikelwa komlilo.
Izici ze-ball valve
1. Inokumelana nokugeleza okuphansi kakhulu (empeleni u-zero). 2. Ngeke ibambeke lapho isebenza ngaphandle kokugcoba, ngakho-ke ingasetshenziswa ngokuthembekile kuma-media agqwalisayo kanye noketshezi oluphansi lokubila. 3. Ingafinyelela ukuvala okungu-100% ebangeni elikhulu lokucindezela kanye nokushisa. 4. Ingenza ukuvulwa nokuvala okusheshayo kakhulu, kanti isikhathi sokuvulwa nokuvala kwezinye izakhiwo singu-0.05 ~ 0.1s kuphela, ukuze kuqinisekiswe ukuthi ingasetshenziswa ohlelweni lokuzenzakalela lwebhentshi lokuhlola. Lapho ivalvu ivulwa futhi ivalwa ngokushesha, akukho ukushaqeka okusebenzayo. 5. Ukuvalwa okuyindilinga kungabekwa ngokuzenzakalela endaweni. 6. Indawo yokusebenza ivalwe ngokuthembekile kuzo zombili izinhlangothi. 7. Uma ivuliwe ngokuphelele futhi ivalwe ngokuphelele, izindawo zokuvala zebhola kanye nesihlalo sevalvu zihlukaniswe nendawo, ngakho indawo edlula evalvini ngesivinini esikhulu ngeke ibangele ukuguguleka kwendawo yokuvala. 8. Ngesakhiwo esiqinile nesisindo esincane, ingabhekwa njengesakhiwo sevalvu esifanelekile kakhulu esifanelekile ohlelweni oluphakathi lokushisa eliphansi. 9. Umzimba wevalvu ulingana, ikakhulukazi uma isakhiwo somzimba wevalvu sishisiwe, esingamelana kahle nokucindezeleka okuvela epayipini. 10. Ingxenye yokuvala ingamelana nomehluko wokucindezela okuphezulu lapho ivala. 11. Ivalvu yebhola enomzimba wevalvu oshisiwe ngokuphelele ingangcwatshwa ngqo emhlabathini, ukuze izingxenye zangaphakathi zevalvu zingaguguleki, futhi isikhathi senkonzo esiphezulu singafinyelela eminyakeni engama-30. Yivalvu efanelekile kakhulu yamapayipi kawoyela negesi yemvelo.
Ukusetshenziswa kwe-ball valve
Izici eziningi eziyingqayizivele zama-ball valve zinquma ukuthi ukusetshenziswa kwama-ball valve kubanzi kakhulu. Ngokuvamile, ekulungisweni kwezindawo ezimbili, ukusebenza okuqinile kokuvala, udaka, ukuguguleka, iziteshi ezinciphayo, izenzo zokuvula nokuvala okusheshayo (ukuvula nokuvala okungu-1/4), ukunqanyulwa kokucindezela okuphezulu (Ama-ball valve anconywa ezinhlelweni zamapayipi ezinomehluko omkhulu wokucindezela), umsindo ophansi, ukugoba kanye nokufakwa kwegesi, inani elincane lokuvuza emoyeni, i-torque encane yokusebenza, kanye nokumelana okuncane koketshezi.
I-valve yebhola ifaneleka futhi ohlelweni lwepayipi olunesakhiwo sokukhanya, ukunqunywa komfutho ophansi (umehluko omncane wokucindezela) kanye nendawo ebolile. Ama-valve ebhola angasetshenziswa nasekufakweni kwamapayipi ane-cryogenic (cryogenic). Ohlelweni lwepayipi le-oxygen embonini yensimbi, ama-valve ebhola asebethole ukwelashwa okuqinile kokususa amafutha ayadingeka. Lapho umugqa oyinhloko epayipini likawoyela kanye nepayipi legesi kudingeka kungcwatshwe ngaphansi komhlaba, kufanele kusetshenziswe i-valve yebhola egcwele i-welded. Uma kudingeka ukusebenza kokulungisa, kufanele kukhethwe i-valve yebhola enesakhiwo esikhethekile esinomgodi omise okwe-V. Ku-petroleum, i-petrochemical, i-chemical, amandla kagesi, kanye nokwakhiwa kwedolobha, ama-valve ebhola okuvala insimbi kuya kwensimbi angakhethwa ezinhlelweni zepayipi ezinokushisa okusebenzayo okungaphezu kwama-degrees angu-200.
Isimiso sokusebenza se-ball valve
Imigqa eyinhloko yokudlulisa uwoyela negesi yemvelo, amapayipi adinga ukuhlanzwa, futhi angcwatshwe ngaphansi komhlaba, khetha ivalvu yebhola enendlela yonke kanye nesakhiwo esihlanganisiwe; ngcwatshwe emhlabathini, khetha ivalvu yebhola enoxhumano oluhlanganisiwe noma uxhumano lweflange; ipayipi legatsha, khetha uxhumano lweflange, uxhumano oluhlanganisiwe, ivalvu yebhola egcwele noma encishisiwe. Amapayipi kanye nemishini yokugcina uwoyela ocwengekile asebenzisa amavalvu ebhola acwengekile. Empayipini wegesi yedolobha kanye negesi yemvelo, kukhethwa ivalvu yebhola entantayo enoxhumano lweflange kanye noxhumano lwentambo yangaphakathi. Ohlelweni lwepayipi le-oxygen ohlelweni lwe-metallurgical, kuyacetyiswa ukusebenzisa ivalvu yebhola elungisiwe eye yaphathwa ngokuqinile futhi yangcwatshwa. Ohlelweni lwepayipi kanye nedivayisi ye-medium yokushisa okuphansi, kufanele kukhethwe ivalvu yebhola ephansi enesembozo sevalvu. Ohlelweni lwepayipi leyunithi yokuqhekeka kwe-catalytic yeyunithi yokucwenga uwoyela, ivalvu yebhola yohlobo lwenduku yokuphakamisa ingakhethwa. Kumadivayisi nezinhlelo zamapayipi zemidiya ebolile njenge-asidi ne-alkali ezinhlelweni zamakhemikhali, wonke amavalvu ebhola lensimbi engagqwali enziwe ngensimbi engagqwali ye-austenitic kanye ne-PTFE njengendandatho yokuvala isihlalo sevalvu kufanele kukhethwe. Amavalvu ebhola lokuvala insimbi kuya kwensimbi angasetshenziswa ezinhlelweni zamapayipi noma kumadivayisi okushisa okuphezulu ezinhlelweni zensimbi, ezinhlelweni zamandla, ezitshalweni ze-petrochemical, kanye nezinhlelo zokushisa zasemadolobheni. Uma kudingeka ukulungiswa kokugeleza, ivalvu yebhola elawulwa yi-worm gear, i-pneumatic noma kagesi evuleka ngendlela efana ne-V ingakhethwa.
Isifinyezo:Ukusetshenziswa kwama-ball valve kubanzi kakhulu, ukuhlukahluka kanye nobuningi bokusetshenziswa kusakhula, futhi athuthuka ngokuya ngokucindezela okuphezulu, izinga lokushisa eliphezulu, ububanzi obukhulu, ukusebenza okuphezulu kokuvala, impilo ende, ukusebenza okuhle kakhulu kokulungisa kanye nemisebenzi eminingi ye-valve eyodwa. Ukuthembeka kwayo kanye nokunye. Izinkomba zokusebenza zifinyelele ezingeni eliphezulu, futhi zithathe indawo yama-gate valve, ama-globe valve, kanye nama-regulating valve. Ngentuthuko yobuchwepheshe yama-ball valve, izosetshenziswa kabanzi esikhathini esifushane esibonakalayo, ikakhulukazi kumapayipi kawoyela negesi, ama-cracker ekuhlanzeni uwoyela kanye nasembonini yenuzi. Ngaphezu kwalokho, ama-ball valve nawo azoba olunye lwezinhlobo zama-valve ezivelele emikhakheni ye-caliber enkulu nephakathi, ingcindezi ephakathi nephansi kwezinye izimboni.
Isikhathi sokuthunyelwe: Ephreli-01-2022