Ntchito Zazikulu & Mfundo Zosankhira za Mavavu

Mavavu ndi gawo lofunikira pamakina a mapaipi a mafakitale ndipo amagwira ntchito yofunika kwambiri popanga.

Ⅰ. Ntchito yaikulu ya valve

1.1 Kusintha ndi kudula media:valve pachipata, valavu ya butterfly, valavu ya mpira ikhoza kusankhidwa;

1.2 Pewani kubwerera m'mbuyo kwa sing'anga:valavu yoyezeraakhoza kusankhidwa;

1.3 Sinthani kuthamanga ndi kuthamanga kwa sing'anga: valavu yotseka ndi valve yolamulira;

1.4 Kupatukana, kusakaniza kapena kugawa media: plug valve,valve pachipata, valavu yowongolera ikhoza kusankhidwa;

1.5 Pewani kupanikizika kwapakatikati kuti zisapitirire mtengo wotchulidwa kuti muwonetsetse kuti payipi kapena zipangizo zikuyenda bwino: valve yotetezera ikhoza kusankhidwa.

Kusankhidwa kwa ma valve makamaka kuchokera kumaganizo a ntchito yopanda mavuto ndi chuma.

Ⅱ. Ntchito ya valve

Pali zinthu zingapo zofunika zomwe zikukhudzidwa, ndipo apa pali kukambirana mwatsatanetsatane za izo:

2.1 Mtundu wa madzi operekera

Mtundu wa Madzi: Kaya madziwo ndi amadzimadzi, gasi, kapena nthunzi zimakhudza mwachindunji kusankha valavu. Mwachitsanzo, madzi angafunike valavu yozimitsa, pomwe mpweya ungakhale woyenera kwambiri pa mavalavu a mpira. Kuzimiririka: Madzi amadzimadzi amafunikira zinthu zosagwira dzimbiri monga chitsulo chosapanga dzimbiri kapena ma alloy apadera. Kuzimiririka: Madzi amadzimadzi okhala ndi kukhuthala kwakukulu angafunike ma diameter akuluakulu kapena mavalavu opangidwa mwapadera kuti achepetse kutsekeka. Kuchuluka kwa tinthu tating'onoting'ono: Madzi okhala ndi tinthu tating'onoting'ono tolimba angafunike zinthu zosagwira ntchito kapena mavalavu opangidwa mwapadera, monga mavalavu opindika.

2.2 Ntchito ya valve

Kusintha kwakusintha: Nthawi zomwe zimangofunika kusintha, ma valve a mpira kapenama valve pachipatandi zosankha wamba.

Kuwongolera Mayendedwe: Pakafunika kuwongolera koyenda bwino, ma valve a globe kapena ma valve owongolera amakhala oyenera.

Kupewa Kubwerera Kumbuyo:Onani ma valveamagwiritsidwa ntchito kuteteza madzi kubwerera.

Shunt kapena Phatikizani: Vavu yanjira zitatu kapena valavu yanjira zambiri imagwiritsidwa ntchito kupatutsa kapena kuphatikiza.

2.3 Kukula kwa valve

Kukula kwa chitoliro: Kukula kwa vavu kuyenera kufanana ndi kukula kwa chitoliro kuti zitsimikizire kuti njira yamadzimadzi yosalala. Zofunikira zoyenda: Kukula kwa valve kumafunika kukwaniritsa zofunikira za kayendetsedwe ka kayendetsedwe kake, ndipo zazikulu kapena zochepa kwambiri zidzakhudza kugwira ntchito bwino. Malo Oyikirapo: Zolepheretsa malo oyika zimatha kukhudza kusankha kukula kwa valve.

2.4 Kukana kutayika kwa valve

Kutsika kwapanikizi: Vavu iyenera kuchepetsa kutsika kwamphamvu kuti isakhudze magwiridwe antchito.

Mapangidwe amayendedwe oyenda: Mavavu athunthu, monga ma valve odzaza mpira, amachepetsa kutayika.

Mtundu wa Vavu: Ma valve ena, monga ma valve a butterfly, amakhala ndi mphamvu zochepa akatsegulidwa, zomwe zimawapangitsa kukhala oyenera kutsika kwapansi.

2.5 Kutentha kwa ntchito ndi kuthamanga kwa valve

Kutentha kosiyanasiyana: Zida za valve zimafunika kuti zigwirizane ndi kutentha kwamadzimadzi, ndipo zinthu zosagwira kutentha ziyenera kusankhidwa m'malo otentha kwambiri kapena otsika.

Kupanikizika kwapakati: Valavu iyenera kupirira kupanikizika kwakukulu kwa dongosolo, ndipo dongosolo lapamwamba liyenera kusankha valavu yokhala ndi mphamvu yapamwamba.

Kuphatikizika kwa kutentha ndi kupanikizika: Kutentha kwakukulu ndi malo othamanga kwambiri kumafuna kulingalira mwapadera za mphamvu zakuthupi ndi kusindikiza katundu.

2.6 Zinthu za valve

Kukana dzimbiri: Sankhani zipangizo zoyenera kutengera kuwononga kwa madzimadzi, monga chitsulo chosapanga dzimbiri, Hastelloy, ndi zina zotero.

Mphamvu zamakina: Zida za valve zimafunika kukhala ndi mphamvu zokwanira zamakina kuti zipirire kukakamiza kogwira ntchito.

Kusinthasintha kwa kutentha: Zinthuzo zimafunika kuti zigwirizane ndi kutentha kwa ntchito, malo otentha kwambiri amafunikira zipangizo zosagwira kutentha, ndipo malo otsika amafunikira zipangizo zozizira.

Chuma: Pamalingaliro okwaniritsa zofunikira pakugwirira ntchito, sankhani zida zomwe zili ndi chuma chabwinoko.