Ma valve a mpirandivalavu butterfly ndi magulu awiri ofunikira a ma valve ndipo amagwiritsidwa ntchito kwambiri.Valavu ya mpira imafuna kusindikiza mwamphamvu pa kutentha kwakukulu komanso kuthamanga kwambiri komanso kukana kotsika.Mavavu agulugufe amagwiritsidwa ntchito makamaka pazikhalidwe zogwirira ntchito zomwe zimakhala zotsika kwambiri komanso zofunikira zochepa zosindikiza.

 

Palinso magulu ambiri a ma valve a mpira ndi agulugufe.Mavavu a mpira amatha kugawidwa mu: zitsulo zomata zolimba zomata mpira, mavavu omata zofewa, mavavu oyandama a mpira, mavavu okhazikika a mpira, ma eccentric theka-mpira mavavu, mavavu owongolera owoneka ngati V, etc.

 

Vavu yagulugufe imagawidwa m'magulu atatu: valavu yagulugufe atatu, valavu yagulugufe wapawiri, valavu yagulugufe yapakati, valavu yagulugufe yosindikiza, valavu yagulugufe yofewa.

 

Mavavu a mpira ndi ma valve a butterfly amagwiritsidwa ntchito kwambiri.Nthawi zina, zonsezi zingagwiritsidwe ntchito mofanana, ndipo m'malo ena ogwira ntchito, imodzi yokha ingagwiritsidwe ntchito.Makhalidwe a mitundu iwiriyi ya mavavu.Timasanthula mwachidule:

Vavu ya mpira: valavu ya tambala idasinthika, gawo lotsegula ndi lotseka ndi gawo, mawonekedwe ake ndi:

1. Kukaniza kufalikira ndikochepa.Mukatsegulidwa kwathunthu, palibe magawo omwe amaletsa kuyenda kwa sing'anga mumsewu;

2. Ikhoza kusindikizidwa kwathunthu pansi pa kupanikizika kwakukulu ndi kutentha kwakukulu;

3. Ikhoza kutsegulidwa ndi kutsekedwa mwamsanga;

4. Zindikirani kukana kwamphamvu kwambiri komanso kukana kwa dzimbiri kolimba kudzera pakuwumitsa chithandizo;

5. Thupi la valve ndilofanana, lomwe limatha kupirira kupanikizika kwa mapaipi ndipo limatha kuthana ndi zovuta zogwira ntchito.

 

Vavu yagulugufe: Gawo lotsegulira ndi kutseka ndi mbale yagulugufe yamtundu wa disc, yomwe imadziwika ndi:

1. Kapangidwe kosavuta, kakulidwe kakang'ono ndi kukhazikitsa kosavuta;

2. Coefficient yaing'ono yotsutsana ndi kutuluka, kutsegula mofulumira ndi kutseka;

3. Itha kugwiritsidwa ntchito ngati ma valve akulu awiri;

4. Malo osindikizira osiyanasiyana angagwiritsidwe ntchito m'madera osiyanasiyana, kuphatikizapo powdery ndi granular media.

 

Poyerekeza ndi valavu ya mpira, valavu ya butterfly imakhala ndi ntchito yosindikiza pang'ono, koma pakati pa ma valve akuluakulu, valavu ya butterfly imakhala ndi mwayi wapadera pa valve ya mpira;pamene amagwiritsidwa ntchito kuti azitha kuyenda bwino, valavu ya butterfly imakhala ndi kagawo kakang'ono kosintha, pamene V-mtundu wosinthira mpira wa V-valve umasinthika.M'mapaipi othamanga kwambiri, mavavu a mpira ali ndi zabwino kuposa ma valve agulugufe.

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Nthawi yotumiza: May-24-2021