Vavu ndi chipangizo chomwe chimagwiritsidwa ntchito poyang'anira momwe madzi akulowera, kuthamanga, ndi kutuluka kwa madzi mumadzimadzi. Imathandizira kapena kuyimitsa kuyenda kwa media (zamadzimadzi, mpweya, ufa) mkati mwa mapaipi ndi zida, ndipo imatha kuwongolera kuyenda kwawo.
Vavu ndi gawo lowongolera mumayendedwe amadzimadzi a mapaipi, omwe amagwiritsidwa ntchito kusintha gawo lodutsa-panjira ndi komwe sing'anga imayendera. Imagwira ntchito monga kupatutsa, kutseka, kugwedeza, kuyang'ana, kupatutsa, kapena kusefukira kuti muchepetse kupanikizika. Mavavu omwe amagwiritsidwa ntchito powongolera madzimadzi amabwera m'mitundu yosiyanasiyana komanso mawonekedwe, kuyambira mavavu osavuta apadziko lonse kupita ku mavavu omwe amagwiritsidwa ntchito m'makina ovuta kwambiri owongolera. Ma valavu mwadzina amachokera ku mavavu ang'onoang'ono kupita ku mavavu a mapaipi a mafakitale okhala ndi mainchesi mpaka 10 metres. Mavavu amatha kugwiritsidwa ntchito kuwongolera kutuluka kwamadzimadzi osiyanasiyana, kuphatikiza madzi, nthunzi, mafuta, gasi, slurry, media zowononga zosiyanasiyana, zitsulo zamadzimadzi, ndimadzimadzi a radioactive. Mavavu amatha kugwira ntchito mopanikizika kuyambira pa 0.0013 MPa mpaka -makamaka kwambiri a 1000 MPa, komanso pa kutentha koyambira -madigirii 270 mpaka 1430 digirii . Mavavu amatha kuwongoleredwa ndi njira zosiyanasiyana zopatsira, monga mawoko, magetsi, hayidiroliki, pneumatic, turbine, electromagnetic, electromagnetic hydraulic, electro{14}}hydraulic, gas-hydraulic, spur gear, bevel gear drive, ndi zina zotero; amatha kuchita molingana ndi zomwe zidakonzedweratu potengera kukakamizidwa, kutentha kapena mitundu ina ya ma sensa, kapena kungotsegula kapena kutseka popanda kudalira ma sensor a sensor. Valve imadalira pagalimoto kapena makina odzipangira okha kuti magawo otsegulira ndi otseka asunthike mmwamba ndi pansi, slide, swing kapena kuzungulira, potero amasintha kukula kwa malo ake oyenda kuti akwaniritse ntchito yake yolamulira.
Zitsimikizo
Chizindikiro cha CE
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