Ake sethule ukuthi uyini umehluko phakathi kwe-valve yeglobhu kanye ne-ai-valve yesango.
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Isakhiwo
Uma isikhala sokufaka silinganiselwe, naka ukukhetha:
Ii-valve yesangoingathembela kungcindezi ephakathi nendawo ukuze ivale ngokuqinile indawo yokuvala, ukuze kuzuzwe umphumela wokungavuzi. Lapho uvula futhi uvala, i-valve core kanye nendawo yokuvala yesihlalo se-valve ihlala ithintana futhi igudlana, ngakho-ke indawo yokuvala kulula ukugqoka, futhi umai-valve yesangoisisondele ekuvaleni, umehluko wengcindezi phakathi kwengaphambili nangemuva kwepayipi mkhulu kakhulu, okwenza indawo yokuvala igqoke ibe bucayi kakhulu.
Isakhiwo se-i-valve yesangoizoba yinkimbinkimbi kakhulu kune-valve yembulunga, ngokombono wokubukeka, esimweni sezinga elifanayo, i-valve yesango iphakeme kune-valve yembulunga, futhi i-valve yembulunga yinde kune-valve yembulunga.i-valve yesango. Ngaphezu kwalokho, i-i-valve yesangoihlukaniswe yaba induku ekhanyayo nenduku emnyama. Ama-valve wokuvala awakwenzi.
Isebenza kanjani
Lapho i-valve yembulunga ivulwa futhi ivaliwe, iyisiqu esikhuphukayo, okungukuthi, lapho isondo lesandla lizungezwa, isondo lesandla lizojikeleza futhi liphakamise ngesiqu. Ii-valve yesangoiwukuzungezisa isondo lesandla ukwenza isiqu se-valve senze ukunyakaza kokuphakamisa, futhi indawo ye-handwheel ngokwayo ihlala ingashintshile.
Amazinga okugeleza ayahluka, ngeama-valve esangoedinga ukuvuleka okugcwele noma ukuvala ngokugcwele, kuyilapho ama-valve embulunga engenzi. I-valve yembulunga inendlela ecacisiwe yokungena nokuphuma, kanye nei-valve yesangoayinazo izidingo zendlela yokungena nokuphumayo.
Ngaphezu kwalokho, i-i-valve yesangokuphela inezifunda ezimbili: evulekile ngokugcwele noma evaliwe ngokugcwele, futhi ukushaywa kokuvula nokuvala ipuleti yesango kukhulu kakhulu, futhi isikhathi sokuvula nokuvala side. I-stroke yokunyakaza ye-valve plate ye-valve yembulunga incane kakhulu, futhi ipuleti levalvu levalvu yomhlaba lingama endaweni ethile linyakaze ukuze kulungiswe ukugeleza. Ii-valve yesangoingasetshenziselwa ukunqamula kuphela futhi ayinayo eminye imisebenzi.
Umehluko wokusebenza
I-valve ye-globe ingasetshenziselwa kokubili ukulawulwa kokusika nokugeleza. Ukumelana noketshezi lwe-valve yembulunga kukhulu uma kuqhathaniswa, futhi kuba nzima kakhulu ukuvula nokuvala, kodwa ngenxa yokuthi ibanga phakathi kwepuleti le-valve nendawo yokuvala lifushane, ukuvuleka nokuvala kufushane.
Ngoba ii-valve yesangoingavulwa futhi ivalwe ngokugcwele, lapho ivuliwe ngokugcwele, ukumelana nokugeleza okuphakathi esiteshini somzimba we-valve cishe ku-0, ngakho-ke ukuvulwa nokuvalwa kwe-valve.i-valve yesangoizosindisa kakhulu umsebenzi, kodwa ipuleti lesango likude nendawo yokuvala, futhi isikhathi sokuvula nokuvala side.
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Isiqondiso sokufaka nokugeleza
Umthelela wei-valve yesangoisiqondiso sokugeleza kuzo zombili izinkomba siyafana, asikho isidingo sokuqondiswa kwe-inlet ne-outlet yokufaka, futhi okuphakathi kungageleza kuzo zombili izinkomba. I-valve yembulunga idinga ukufakwa ngokuhambisana ngokuqinile nesiqondiso esimakwe umcibisholo womzimba we-valve, futhi kukhona ukuhlinzekwa okucacile mayelana nesiqondiso sokungena nokuphuma kwe-valve yembulunga, futhi isiqondiso sokugeleza kwe-valve yomhlaba yamukelwe ukusuka phezulu kuye phansi ngokuvumelana “nezinguquko ezintathu” zevalvu yaseChina.
I-valve yokuvala iphansi futhi iphezulu, futhi kusukela ngaphandle kukhona ipayipi ecacile engekho ezingeni lesigaba esisodwa. Ii-valve yesangoindlela yokugeleza ikumugqa ovundlile. Ukushaywa kwei-valve yesangoinkulu kunaleyo yevalvu yembulunga.
Ngokombono wokumelana nokugeleza, lapho kuvuliwe ngokugcwele, ukumelana nokugeleza kwe-valve yesango kuncane, futhi ukumelana nokugeleza kwe-valve yokumisa umthwalo kukhulu. I-coefficient yokumelana nokugeleza evamilei-valve yesangocishe ku-0.08 ~ 0.12, amandla okuvula nawokuvala mancane, futhi okuphakathi kungageleza ngezindlela ezimbili. Ukumelana nokugeleza kwama-valve embulunga ajwayelekile izikhathi ezingama-3-5 kunalokhoama-valve esango.Ukuvula nokuvala kudinga ukuphoqeleka ukuvala ukuze kufinyelelwe uphawu, i-spool ye-valve ye-globe ivalwe ngokuphelele lapho ithinta indawo yokuvala, ngakho-ke ukugqoka kwendawo yokuvala kuncane kakhulu, ngenxa yokugeleza okukhulu kwamandla amakhulu engeza i-actuator ye-valve yomhlaba kufanele inake ukulungiswa kwendlela yokulawula i-torque.
Kunezindlela ezimbili zokufaka i-valve ye-globe, enye ukuthi i-medium ingangena ngaphansi kwe-spool, inzuzo ukuthi ukupakisha akucindezelwa lapho i-valve ivaliwe, enganweba impilo yesevisi yokupakisha, futhi ingathatha indawo. ukupakisha lapho ipayipi phambi kwe-valve ingaphansi kwengcindezi; Okubi ukuthi i-torque yokushayela ye-valve inkulu, cishe izikhathi ezingu-1 zokugeleza okuphezulu, amandla e-axial we-valve stem makhulu, futhi i-valve stem kulula ukugoba.
Ngakho-ke, le ndlela ngokuvamile ifaneleka kuphela amavalvu eglobhu anobubanzi obuncane (i-DN50 noma ngaphansi), futhi amavalvu embulunga angaphezu kwe-DN200 asebenzisa okuphakathi ageleza kuvela phezulu. (Amavalvu eglobhu kagesi ngokuvamile asebenzisa okuphakathi ukuze angene phezulu.) Ububi bendlela yokufaka imidiya evela phezulu iphambene ncamashi nendlela yokufaka ephansi.
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Ukubeka uphawu
Indawo yokuvala i-valve yembulunga iyingxenye encane ye-trapezoidal ye-valve core (bheka ngokuqondile ukuma kwe-valve core), uma i-valve core iwa, ilingana nokuvalwa kwe-valve (uma umehluko wengcindezi mkhulu, Yebo, ukuvala akuyona eqinile, kodwa umphumela isheke akukubi), thei-valve yesangoivalwe eceleni kwepuleti lesango eliwumgogodla we-valve, umphumela wokuvala awumuhle njengevalvu yembulunga, futhi i-valve core ngeke siwe njengevalvu yeglobhu elilingana nokuvala kwevalvu.
Isikhathi sokuthumela: Apr-08-2023
