Lisho ukuthini inani le-CV? Ungakhetha kanjani i-valve yokulawula ngenani le-Cv?

Ini-valveubunjiniyela, inani le-Cv (I-Flow Coefficient) yokulawulai-valveibhekisela esilinganisweni sokugeleza kwevolumu noma izinga lokugeleza kobuningi bendawo yepayipi ngokusebenzisa ivalvu ngesikhathi seyunithi nangaphansi kwezimo zokuhlola lapho ipayipi ligcinwa linengcindezi engaguquki. Okusho ukuthi, umthamo wokugeleza we-valve.

Ukuphakama kwevelu ye-coefficient, iyancipha ukulahlekelwa kwengcindezi njengoba uketshezi lugelezai-valve.

Inani le-Cv levalvu kufanele linqunywe ngokuhlola nokubala.

I-CVinaniiyipharamitha yobuchwepheshe ebalulekile ekala amandla okugeleza kwevalvu yokulawula ngaphansi kwezimo ezithile. Inani le-CV alibonisi kuphela ukusebenza kwe-valve ngokwayo, kodwa futhi lihlobene ngokuqondile nokuklama nokusebenza kahle kwesistimu yokulawula uketshezi.

Incazelo ngokuvamile isekelwe ezimweni ezijwayelekile ezilandelayo: ii-valveivuleke ngokugcwele, umehluko wengcindezi ungu-1 lb/in² (noma 7KPa) ekugcineni, futhi uketshezi luwu-60°F (15.6°C) wamanzi ahlanzekile, okuyilapho ivolumu yoketshezi (ngamagalani ase-US) edlula kuvalvu ngomzuzu inani le-Cv yevalvu. Kufanele kuqashelwe ukuthi i-flow coefficient e-China ivame ukuchazwa kusistimu yemethrikhi, ngophawu Kv, futhi ubudlelwano nevelu ye-Cv buthi Cv=1.156Kv.

Indlela yokunquma izinga le-valve ngevelu ye-Cv

1. Bala inani le-CV oyifunayo:

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

2. Khetha ububanzi obufanele bevalvu:

Ngokwenani le-Cv elifiselekayo elibaliwe kanye nenani elilinganiselwe le-Cv levalvu, ububanzi bevalvu obufanele bukhethiwe. Inani le-Cv elilinganiselwe le-valve ekhethiwe kufanele lilingane noma libe likhulu kancane kunevelu ye-Cv edingekayo ukuze kuqinisekiswe ukuthi i-valve ingakwazi ukuhlangabezana nesidingo sangempela sokugeleza. Ngesikhathi esifanayo, kuyadingeka futhi ukucabangela ezinye izici ezifana nempahla, isakhiwo, ukusebenza kokuvala, kanye nemodi yokusebenza ye-valve ukuze kuqinisekiswe ukuthi ukusebenza okuphelele kwe-valve kuhlangabezana nezidingo zesistimu.

3. Ukuqinisekisa Nokulungiswa:

Ngemuva kokukhetha kokuqala kwe-i-valveizinga, ukuqinisekiswa okudingekayo kanye nokulungiswa kufanele kwenziwe. Lokhu kuhlanganisa nokuqinisekisa ukuthi ukusebenza kokugeleza kwevalvu kuhlangabezana nezimfuneko zesistimu ngezibalo zokulingisa noma ukuhlola komhlaba wangempela. Uma ukuchezuka okukhulu kutholakala, kungase kudingeke ukubala kabusha inani le-Cv noma ulungise ububanzi be-valve.

Isifinyezo

Ohlelweni lokuhlinzeka ngamanzi esakhiweni, uma ivalvu yokulawula ingahlangabezani nenani le-CV edingekayo, iphampu yamanzi ingase iqale futhi ime njalo noma isebenze ngomthwalo omkhulu ngaso sonke isikhathi. Akukhona nje kuphela ukuthi lokhu kuwukumosha amandla kagesi, kodwa ngenxa yokuguquguquka kwengcindezi kaningi, kungaholela ekuxhumekeni kwamapayipi okuxegayo, ukuvuza, futhi kungase kubangele nokulimala kwepompo ngenxa yokugcwala isikhathi eside.

Kafushane, inani le-Cv le-valve yokulawula liyinkomba ebalulekile yokulinganisa umthamo wayo wokugeleza. Ngokubala ngokunembile inani le-Cv nokunquma i-valve caliber efanele ngokusekelwe kuyo, ukuzinza nokusebenza kahle kwesistimu yokulawula uketshezi kungaqinisekiswa. Ngakho-ke, ekukhethweni kwe-valve, ukuklama kwesistimu nokusebenza kahle, ukunaka okugcwele kufanele kukhokhwe ekubalweni nasekusetshenzisweni kwenani le-Cv.

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