Ukuqina kwamabhola ama-4
Izinto zokuvala izihlalo ezibaluleke kakhuluamavalvu ebholayi-polytetraoxyethylene (PTFE), ezwela cishe kuzo zonke izinto zamakhemikhali, futhi ine-coefficient ephansi yokungqubuzana, ukusebenza okuzinzile, akulula ukuyiguga, ububanzi bokusetshenziswa kwezinga lokushisa elibanzi kanye nokusebenza kokuvala Izici ezinhle kakhulu eziphelele. Kodwa-ke, izakhiwo zomzimba ze-PTFE, kufaka phakathi i-coefficient ephezulu yokukhulisa, ukuzwela ekugelezeni okubandayo kanye nokuqhuba kabi kokushisa, zidinga ukwakheka kwezivalo zesihlalo se-valve ukuze kugxilwe kulezi zici. Izinto zepulasitiki zesivalo sesihlalo se-valve zihlanganisa ne-PTFE egcwele, i-nylon nezinye izinto eziningi. Kodwa-ke, lapho izinto zokuvala ziba nzima, ukuthembeka kwesivalo kuzolimala, ikakhulukazi uma kunomehluko ophansi wokucindezela. Ngaphezu kwalokho, irabha yokwenziwa efana nerabha ye-butyl ingasetshenziswa futhi njengento yokuvala isihlalo se-valve, kodwa izidakamizwa zayo eziphakathi nendawo nezishisayo zilinganiselwe. Ngaphezu kwalokho, uma i-medium ingagcotshwanga, ukusetshenziswa kwerabha yokwenziwa kungenzeka kugxume ibhola.
Ukuze kuhlangatshezwane nezidingo zokusetshenziswa kwezicelo zezimboni ezifana nokushisa okuphezulu, umfutho ophezulu, ukuguguleka okunamandla, impilo ende, njll., ama-valve ebhola avaliwe ngensimbi athuthukiswe kakhulu eminyakeni eyishumi edlule. Ikakhulukazi emazweni athuthukile ezimboni, njenge-United States, i-Italy, iJalimane, iSpain, iNetherlands, njll., isakhiwo se-valve yebhola siye sathuthukiswa njalo, futhi kube nama-valve ebhola ahlanganiswe ngqo nomzimba wonke, ama-valve ebhola okuphakamisa, nama-valve ebhola emapayipini akude, imishini yokucwenga uwoyela, njll. Insimu yezimboni isetshenziswa kabanzi, enama-valve ebhola amakhulu (3050mm), umfutho ophezulu (70MPa) kanye nobubanzi bokushisa obubanzi (-196~8159C) avela, ukuze ubuchwepheshe be-valve yebhola bufinyelele ezingeni elisha.
5 Ukuklama nokukhiqiza ama-ball valve
Ngenxa yokusetshenziswa kwe-Computer Aided Design (CAD), i-Computer Aided Manufacturing (CAM) kanye ne-Mulberry Manufacturing System (FMS) embonini yama-valve, ukuklama nokukhiqizwa kwama-ball valve sekufinyelele ezingeni elisha ngokuphelele. Akugcini nje ngokuthuthukisa ngokuphelele indlela yokubala ukwakheka kwama-valve, kodwa futhi kunciphise umsebenzi wokuklama osindayo nophindaphindayo wabasebenzi abangochwepheshe nabezobuchwepheshe, ukuze ochwepheshe babe namandla engeziwe okuthuthukisa, ukuthuthukisa ukusebenza komkhiqizo kanye nokuthuthukiswa komkhiqizo omusha, kanye nokunciphisa umjikelezo wocwaningo nokuthuthukiswa kwemikhiqizo emisha. , Thuthukisa umkhiqizo wabasebenzi ngendlela ephelele, futhi enkambisweni yocwaningo nokuthuthukiswa kwe-valve yebhola yokubopha insimbi yohlobo lwenduku yokuphakamisa, ngenxa yokusetshenziswa kwe-CAD/CAM, kuvele i-flat yenduku ebanzi eyenziwe ngomklamo osekelwa yikhompyutha kanye namathuluzi omshini we-CNC asekelwa yikhompyutha, okuyi-seal yensimbi. I-ball valve ayinazo iziklwebhe nokuguguleka ngesikhathi senqubo yokuvula nokuvala, ukuze ukusebenza kokuvala kanye nokuphila kwenkonzo kwe-ball valve kuthuthukiswe kakhulu. Uma ivalvu yebhola ivuliwe ngokugcwele, ukumelana kokugeleza kuncane kakhulu, cishe kulingane no-zero, ngakho-ke ivalvu yebhola enobubanzi obulinganayo isetshenziswa kabanzi emipayipini kawoyela negesi ngoba kulula ukuhlanza ipayipi. Ngenxa yokuthi ibhola levalvu yebhola liyasulwa ngesikhathi senqubo yokuvula nokuvala, amavalvu amaningi ebhola angasetshenziswa emithonjeni enezinhlayiya eziqinile ezilengayo. Kuye ngezinto zendandatho yokuvala, ingasetshenziswa futhi emithonjeni yempuphu kanye ne-granular.
Izikhathi ezi-6 ze-Ball valve ezisebenzayo
Njengoba ivalvu yebhola ivame ukusebenzisa irabha, i-nylon kanye ne-polytetraoxyethylene njengezinto zokuvala isihlalo, izinga lokushisa lokusetshenziswa kwayo linqunyelwe yizinto zokuvala isihlalo sevalvu. Umphumela wokunqunywa kobubanzi bebhola ufinyelelwa yibhola lensimbi elicindezelwa phakathi kwezihlalo zevalvu yepulasitiki ngaphansi kwesenzo se-medium (ivalvu yebhola entantayo). Ngaphansi kwesenzo sokucindezela okuthile kokuxhumana, indandatho yokuvala isihlalo sevalvu iyaguquguquka ngokunwebeka nangokuplastiki kwezinye izindawo. Lokhu kuguqulwa kungabuyisela ukunemba kokukhiqiza kanye nokuqina kobuso bebhola, futhi kuqinisekise ukusebenza kokuvala kwevalvu yebhola.
Ngaphezu kwalokho, njengoba indandatho yokuvala isihlalo se-valve yebhola ivame ukwenziwa ngepulasitiki, lapho ukhetha isakhiwo kanye nokusebenza kwe-valve yebhola, kubalulekile ukucabangela ukumelana nomlilo kanye nokumelana nomlilo kwe-valve yebhola, ikakhulukazi emkhakheni we-petroleum, amakhemikhali, we-metallurgical kanye neminye, ezindaweni ezivuthayo neziqhumayo. Ukusetshenziswa kwama-valve ebhola ohlelweni lwemishini kanye namapayipi e-United States kufanele kunake kakhulu ukumelana nomlilo kanye nokuvimbela umlilo.
Ngokuvamile, ekulungisweni kwezikhundla ezimbili, ukusebenza okuqinile kokuvala, udaka, ukuhuzuka, isiteshi sokugoqa intamo, isenzo sokuvula nokuvala okusheshayo (ukuvula nokuvala okungu-1/4), ukunqamula ukucindezela okuphezulu (umehluko omkhulu wokucindezela), umsindo ophansi, ukugoba kanye nokuhwamuka, Ezinhlelweni zamapayipi ezinenani elincane lokuvuza emoyeni, i-torque encane yokusebenza kanye nokumelana okuncane koketshezi, kunconywa ama-ball valve.
Ama-valve ebhola nawo afaneleka ezinhlelweni zamapayipi anesakhiwo esilula, ukunqunywa komfutho ophansi (umehluko omncane womfutho), kanye nemidiya ebolile.
Ama-ball valve angasetshenziswa nakumadivayisi okushisa okuphansi (cryogenic) kanye nezinhlelo zamapayipi.
Kuhlelo lwamapayipi e-oxygen embonini yensimbi, kudingeka ama-ball valve asebethole ukwelashwa okuqinile kokususa amafutha.
Uma imigqa eyinhloko emipayipini kawoyela negesi idinga ukugqitshwa ngaphansi komhlaba, kudingeka amavalvu ebhola ahlanganisiwe anobubanzi obugcwele.
Uma kudingeka ukulungisa ukusebenza, kufanele kukhethwe i-valve yebhola enesakhiwo esikhethekile esinokuvulwa okufana no-V.
Ku-petroleum, petrochemical, chemical, kagesi, kanye nokwakhiwa kwedolobha, ama-valve ebhola avaliwe kusukela kwensimbi kuya kwensimbi angasetshenziswa ezinhlelweni zamapayipi anezinga lokushisa lokusebenza elingaphezu kuka-200°C.
Izimiso ezi-7 zokusebenzisa ama-ball valve
Kumapayipi kawoyela negesi yemvelo, amapayipi adinga ukuhlanzwa, futhi agqitshwe emhlabathini, sebenzisa amavalvu ebhola agqitshwe wonke kanye nashiqelwe wonke; ukuze ugqitshwe emhlabathini, khetha amavalvu ebhola agqitshwe wonke noma ashiqelwe wonke; amapayipi egatsha, Khetha uxhumano lweflange, uxhumano lokushisela, ivalvu yebhola egcwele noma encishisiwe.
Ukuze uthole imishini yokugcina uwoyela ocwengekile, sebenzisa ama-valve ebhola acwengekile.
Kumapayipi egesi negesi yemvelo edolobheni, sebenzisa amavalvu ebhola antantayo anoxhumano lweflange kanye noxhumano lwentambo yangaphakathi.
Kuhlelo lwepayipi lomoya-mpilo ohlelweni lwensimbi, kufanele kusetshenziswe ivalvu yebhola elungisiwe eye yaphathwa ngokususwa kwamafutha okuqinile kanye nokuxhumeka okuhlanganisiwe.
Kuma-pipe system namadivayisi anezinga lokushisa eliphansi, kufanele kusetshenziswe ama-ball valve anezinga lokushisa eliphansi anama-bonnet. Kuhlelo lwepayipi lweyunithi yokuqhekeka kwe-catalytic yeyunithi yokucwenga uwoyela, i-ball valve yohlobo lokuphakamisa ingakhethwa.
Ezinhlelweni zemishini namapayipi zemidiya ebolile njenge-asidi ne-alkali ezinhlelweni zamakhemikhali, kuyalulekwa ukusebenzisa wonke ama-valve ebhola ensimbi engagqwali enziwe ngensimbi engagqwali ye-austenitic kanye ne-polytetraoxyethylene njengesihlalo kanye nendandatho yokuvala.
Ama-valve ebhola okuvala insimbi abe yinsimbi angasetshenziswa ezinhlelweni zamapayipi noma kumadivayisi emidiya yokushisa okuphezulu ezinhlelweni zensimbi, ezinhlelweni zikagesi, ekufakweni kwe-petrochemical, kanye nezinhlelo zokushisa zasemadolobheni.
Uma kudingeka ukulungiswa kokugeleza, kungakhethwa i-worm-gear drive, i-pneumatic noma i-electric ball valve ene-V-shaped open.