Kusho ukuthini inani le-CV? Ungayikhetha kanjani ivalvu yokulawula ngenani le-Cv?

Inivalvuubunjiniyela, inani le-Cv (i-Flow Coefficient) lokulawulaivalvuibhekisela esilinganisweni sokugeleza kwevolumu noma izinga lokugeleza kwesisindo sepayipi eliphakathi ngevalvu ngesikhathi ngasinye futhi ngaphansi kwezimo zokuhlolwa lapho ipayipi ligcinwa licindezelekile njalo. Okusho ukuthi, amandla okugeleza evalvu.

Uma inani le-flow coefficient liphakeme, kulapho ukulahleka kwengcindezi kwehla khona njengoba uketshezi lugelezaivalvu.

Inani le-Cv levalvu kumele linqunywe ngokuhlola nokubala.

I-CVinaniiyipharamitha ebalulekile yobuchwepheshe elinganisa umthamo wokugeleza kwevalvu yokulawula ngaphansi kwezimo ezithile. Inani le-CV alibonisi nje kuphela ukusebenza kwevalvu ngokwayo, kodwa futhi lihlobene ngqo nomklamo kanye nokusebenza kahle kohlelo lokulawula uketshezi.

Incazelo ivame ukusekelwe ezimweni ezilandelayo ezijwayelekile:ivalvuivuliwe ngokuphelele, umehluko wokucindezela u-1 lb/in² (noma u-7KPa) emaphethelweni, kanti uketshezi luyi-60°F (15.6°C) yamanzi ahlanzekile, lapho ivolumu yoketshezi (ngamagalani ase-US) edlula ku-valve ngomzuzu iyinani le-Cv le-valve. Kufanele kuqashelwe ukuthi i-flow coefficient eShayina ivame ukuchazwa ohlelweni lwe-metric, olunophawu lwe-Kv, kanye nobudlelwano nenani le-Cv yi-Cv=1.156Kv.

Indlela yokunquma ubukhulu be-valve ngenani le-Cv

1. Bala inani le-CV olifunayo:

Ngokwezidingo ezithile zesistimu yokulawula uketshezi, njengokugeleza, ingcindezi ehlukile, okuphakathi kanye nezinye izimo, inani le-Cv elidingekayo libalwa kusetshenziswa ifomula noma isofthiwe ehambisanayo. Lesi sinyathelo sicabangela izici ezifana nezakhiwo zomzimba zoketshezi (isb., i-viscosity, ubuningi), izimo zokusebenza (isb., izinga lokushisa, ingcindezi), kanye nendawo yevalvu.

2. Khetha ububanzi bevalvu obufanele:

Ngokwenani le-Cv elifunekayo elibaliwe kanye nenani le-Cv elilinganisiwe le-valve, kukhethwa ububanzi be-valve obufanele. Inani le-Cv elilinganisiwe le-valve ekhethiwe kufanele lilingane noma libe likhulu kancane kunenani le-Cv elidingekayo ukuqinisekisa ukuthi i-valve ingahlangabezana nesidingo sangempela sokugeleza. Ngesikhathi esifanayo, kuyadingeka futhi ukucabangela ezinye izinto ezifana nezinto, isakhiwo, ukusebenza kokuvala, kanye nemodi yokusebenza ye-valve ukuqinisekisa ukuthi ukusebenza okuphelele kwe-valve kuhlangabezana nezidingo zesistimu.

3. Ukuqinisekiswa Nokulungiswa:

Ngemuva kokukhethwa kokuqala kwe-ivalvuUma kunesidingo sokulinganisa, kufanele kwenziwe ukuqinisekiswa nokulungiswa okudingekayo. Lokhu kuhlanganisa ukuqinisekisa ukuthi ukusebenza kokugeleza kwevalvu kuhlangabezana nezidingo zesistimu ngokubala kokulingisa noma ukuhlolwa kwangempela. Uma kutholakala ukuphambuka okukhulu, kungadingeka ukubala kabusha inani le-Cv noma ukulungisa ububanzi bevalvu.

Isifinyezo

Ohlelweni lokuphakelwa kwamanzi esakhiweni, uma ivalvu yokulawula ingahlangabezani nenani le-CV elidingekayo, iphampu yamanzi ingaqala futhi ime njalo noma isebenze ngomthwalo omkhulu ngaso sonke isikhathi. Lokhu akugcini nje ngokuchitha amandla kagesi, kodwa ngenxa yokushintshashintsha kwengcindezi njalo, kungaholela ekuxhumekeni kwamapayipi okuxegayo, ukuvuza, futhi kungabangela ngisho nomonakalo ephampuni ngenxa yokulayisha ngokweqile isikhathi eside.

Ngamafuphi, inani le-Cv le-valve yokulawula liyisibonakaliso esibalulekile sokulinganisa umthamo wayo wokugeleza. Ngokubala ngokunembile inani le-Cv nokunquma i-valve caliber efanele ngokusekelwe kuyo, ukuzinza nokusebenza kahle kohlelo lokulawula uketshezi kungaqinisekiswa. Ngakho-ke, enkambisweni yokukhetha i-valve, ukwakheka kohlelo kanye nokwenza ngcono ukusebenza, kufanele kuqashelwe ngokuphelele ekubalweni nasekusetshenzisweni kwenani le-Cv.

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