Iivalvu yebhabhathane yepulasitikiixhunywe ohlelweni lwamapayipi ngezindlela ezilandelayo:

Ukuxhumeka kokushisela izinqe: Ububanzi bangaphandle bengxenye yokuxhuma ivalvu bulingana nobubanzi bangaphandle bepayipi, kanti ubuso bokugcina bengxenye yokuxhuma ivalvu buphambene nobuso bokugcina bepayipi lokushisela;

Ukuxhumeka kwe-socket bonding: ingxenye yokuxhumeka kwe-valve isesimweni se-socket, exhunywe epayipini;

Ukuxhumeka kwesokhethi ye-Electrofusion: ingxenye yokuxhumeka kwe-valve iwuhlobo lwesokhethi olunentambo yokushisa kagesi ebekwe kububanzi bangaphakathi, futhi iwukuxhumeka kwe-electrofusion nepayipi;

Ukuxhumeka kwe-hot-melt kwesokhethi: ingxenye yokuxhumeka kwe-valve isesimweni sesokhethi, futhi ixhunywe nepayipi ngesokhethi ye-hot-melt;

Ukuxhumeka kwe-socket bonding: Ingxenye yokuxhumeka kwe-valve isesimweni se-socket, eboshelwe futhi ihlanganiswe nepayipi;

Ukuxhumeka kwendandatho yokuvala irabha yesokhethi: Ingxenye yokuxhuma ivalvu uhlobo lwesokhethi olunendandatho yokuvala irabha ngaphakathi, eboshwe futhi ixhunywe nepayipi;

Ukuxhumeka kwe-Flange: Ingxenye yokuxhumeka kwe-valve isesimweni se-flange, exhunywe ne-flange epayipini;

Ukuxhumeka kwentambo: Ingxenye yokuxhumeka kwevalvu isesimweni sentambo, exhunywe nentambo epayipini noma ekufakweni kwepayipi;

Ukuxhumeka okubukhoma: Ingxenye yokuxhumeka kwe-valve iwukuxhumeka okubukhoma, okuxhunyweamapayipi noma izinto zokufaka.

I-valve ingaba nezindlela zokuxhuma ezahlukene ngesikhathi esisodwa.

isimiso sokusebenza:

Ubudlelwano phakathi kokuvulwa kwevalvu yepulasitiki kanye nesilinganiso sokugeleza bushintsha ngokuyisisekelo. Uma isetshenziselwa ukulawula ukugeleza, izici zayo zokugeleza nazo zihlobene kakhulu nokumelana nokugeleza kwamapayipi. Isibonelo, kufakwa amapayipi amabili anobubanzi bevalvu obufanayo kanye nesimo, kodwa i-coefficient yokulahlekelwa yipayipi ihlukile, futhi izinga lokugeleza kwevalvu nalo lizohluka kakhulu.

Uma ivalvu isesimweni esinobubanzi obukhulu bokujikijela, ingemuva le-valvu livame ukucasuka, okungalimaza ivalvu. Ngokuvamile, isetshenziswa ngaphandle kwama-degrees angu-15.

Uma i-valve yepulasitiki ye-butterfly isesikhaleni esiphakathi, ukuma kwesivalo esakhiwe ngumzimba we-valve kanye nengxenye engaphambili ye-butterfly plate kugxile ku-shaft ye-valve, futhi izinhlangothi ezimbili zakhiwa ukuze kuqedwe izimo ezahlukene. Ingxenye engaphambili ye-butterfly plate ohlangothini olulodwa ihamba ngendlela yokugeleza kwamanzi, kanti olunye uhlangothi luphambene nendlela yokugeleza. Ngakho-ke, uhlangothi olulodwa lomzimba we-valve kanye ne-valve plate kwakha ukuvulwa okufana nomlomo, kanti olunye uhlangothi lufana nokuvulwa kwe-throttle. Uhlangothi lwe-nozzle lunesivinini sokugeleza esisheshayo kakhulu kunohlangothi lwe-throttle, futhi ingcindezi engemihle izokhiqizwa ngaphansi kwe-valve ohlangothini lwe-throttle. Izivalo zerabha zivame ukuwa.

Amavalvu epulasitiki ebhabhathane kanye nezinduku zebhabhathane azinawo amandla okuzikhiya. Ukuze kubekwe ipuleti lebhabhathane, kufanele kufakwe umshini wokunciphisa amagiya ezikelemu entongeni yevalvu. Ukusetshenziswa komshini wokunciphisa amagiya ezikelemu akugcini nje ngokwenza ipuleti lebhabhathane lizikhiye futhi kumise ipuleti lebhabhathane kunoma yisiphi isikhundla, kodwa futhi kuthuthukise ukusebenza kwevalvu.

I-torque yokusebenza ye-valve ye-butterfly yepulasitiki inamanani ahlukene ngenxa yezindlela ezahlukene zokuvula nokuvala kwe-valve. I-valve ye-butterfly evundlile, ikakhulukazi i-valve enobubanzi obukhulu, ngenxa yokujula kwamanzi, i-torque ekhiqizwa umehluko phakathi kwamakhanda amanzi aphezulu nangaphansi e-shaft ye-valve ayinakunakwa. Ngaphezu kwalokho, lapho i-elbow ifakwa ohlangothini lokungena lwe-valve, kwakheka ukugeleza kwe-bias, futhi i-torque izokwanda. Lapho i-valve isendaweni ephakathi nendawo, indlela yokusebenza idinga ukuzikhiya ngenxa yesenzo se-torque yokugeleza kwamanzi.

I-valve ye-butterfly yepulasitiki inesakhiwo esilula, esakhiwe izingxenye ezimbalwa kuphela, futhi igcina ukusetshenziswa kwezinto; usayizi omncane, isisindo esincane, usayizi omncane wokufakwa, i-torque encane yokushayela, ukusebenza okulula nokusheshayo, idinga ukujikeleza okungu-90° kuphela ukuvula nokuvala ngokushesha; futhi Ngesikhathi esifanayo, inomsebenzi omuhle wokulungisa ukugeleza kanye nezici zokuvala nokuvala. Ensimini yokusetshenziswa ye-caliber enkulu nephakathi, ingcindezi ephakathi nephansi, i-valve ye-butterfly iyisimo se-valve evelele. Lapho i-valve ye-butterfly isesimweni esivulekile ngokuphelele, ubukhulu bepuleti le-butterfly yibo kuphela ukumelana lapho i-medium igeleza emzimbeni we-valve, ngakho-ke ukwehla kwengcindezi okukhiqizwa yi-valve kuncane, ngakho-ke inezici zokulawula ukugeleza okungcono. I-valve ye-butterfly inezinhlobo ezimbili zokuvala: uphawu lwe-elastic kanye nophawu lwensimbi. I-valve yokuvala e-elastic, indandatho yokuvala ingafakwa emzimbeni we-valve noma inamathiselwe emngceleni wepuleti le-butterfly. Ama-valve anezimpawu zensimbi ngokuvamile aphila isikhathi eside kunama-valve anezimpawu ze-elastic, kodwa kunzima ukuthola uphawu oluphelele. Uphawu lwensimbi lungavumelanisa nokushisa okuphezulu kokusebenza, kuyilapho uphawu lwe-elastic lunephutha lokunqunyelwa izinga lokushisa. Uma kudingeka ivalvu yebhabhathane isetshenziswe njengokulawula ukugeleza kwamanzi, into eyinhloko ukukhetha kahle usayizi nohlobo lwevalvu. Umgomo wesakhiwo sevalvu yebhabhathane ufaneleka kakhulu ekwenzeni amavalvu amakhulu. Amavalvu ebhabhathane awasetshenziswa kabanzi kuphela ezimbonini ezijwayelekile ezifana nophethiloli, igesi, amakhemikhali, kanye nokwelashwa kwamanzi, kodwa futhi asetshenziswa ezinhlelweni zamanzi okupholisa eziteshini zamandla ezishisayo. Amavalvu ebhabhathane asetshenziswa kakhulu afaka amavalvu ebhabhathane ohlobo lwe-wafer kanye namavalvu ebhabhathane ohlobo lwe-flange. Amavalvu ebhabhathane e-Wafer axhunywe phakathi kwama-flange amabili epayipi anama-stud bolts. Amavalvu ebhabhathane afakwe ama-flange kuvalvu. Ama-flange kuzo zombili izinhlangothi zevalvu axhunywe kuma-flange epayipi anama-bolts. Ukusebenza kwamandla kwevalvu kubhekisela ekhonweni levalvu lokumela ingcindezi ye-medium. Ivalvu iwumkhiqizo womshini othwala ingcindezi yangaphakathi, ngakho-ke kumele ibe namandla anele kanye nokuqina ukuqinisekisa ukusetshenziswa kwesikhathi eside ngaphandle kokuqhekeka noma ukuguquka.

Ngokusebenzisa irabha yokwenziwa yokulwa nokugqwala kanye ne-polytetrafluoroethylene, ukusebenza kwama-valve e-butterfly kungathuthukiswa futhi kuhlangabezane nezimo zokusebenza ezahlukene. Eminyakeni eyishumi edlule, ama-valve e-butterfly okuvala insimbi athuthuke ngokushesha. Ngokusebenzisa ukumelana nokushisa okuphezulu, ukumelana nokushisa okuphansi, ukumelana nokugqwala okuqinile, ukumelana nokuguguleka okuqinile, kanye nezinto eziqinile ze-alloy kuma-valve e-butterfly, ama-valve e-butterfly okuvala insimbi asetshenziswe ekushiseni okuphezulu, ekushiseni okuphansi, kanye nasekugugulekeni okunamandla. Asetshenziswe kabanzi ngaphansi kwezinye izimo zokusebenza futhi athathe indawo ye-globe valve kancane,ivalvu yesangokanye ne-ball valve.