Kusiyana pakati pa ma valve oletsa phokoso ndi ma valve oletsa phokoso kumadalira kwambiri kuchuluka kwa phokoso.Valavu yowunikira chetechotsani phokoso lokha ndikuchepetsa phokoso.Valavu yowunikira cheteimatha kutchinjiriza ndikuletsa phokoso mwachindunji ikagwiritsidwa ntchito.
Ma valve oyesera cheteAmagwiritsidwa ntchito makamaka pa mapaipi amadzi ndipo amaikidwa pamalo otulukira madzi. Amapangidwa ndi thupi la valavu, diski ya valavu, tsinde la valavu, kasupe ndi zina. Kutseka kwake kumakhala kochepa ndipo liwiro lobwerera m'mbuyo ndi laling'ono panthawi yotseka. Chisindikizo cha valavu chimagwiritsa ntchito chisindikizo chofewa cha rabara, ndipo kubwerera kwa kasupe kumapangitsa valavu kutseguka ndi kutsekedwa popanda kukhudzidwa, kuchepetsa phokoso ndi mphamvu ya nyundo yamadzi, kotero imatchedwa valavu yowunikira silencer. Pakati pake pa valavu pamagwiritsa ntchito kapangidwe kokweza ndipo ndi mtundu wa valavu yowunikira chotsekera.
Ma valve oletsa kuletsaAmayikidwa molunjika kwambiri. Pa ma valve otsogolera okhala ndi mbali ziwiri, amathanso kuyikidwa molunjika. Komabe, pa ma valve akuluakulu, kulemera kwa diski ya valve kumakhala kwakukulu, zomwe zimapangitsa kuti mbali imodzi ya chikwama chotsogolera chiwonongeke, ndipo nthawi zina zimakhudza kutseka. Chifukwa chake, tikulimbikitsidwa kuyika molunjika pa ma valve akuluakulu.
Valavu yoyang'anira chete imatchedwanso valavu yoyang'anira kayendedwe ka mpweya wa axial, ndi chipangizo chofunikira chomwe chimayikidwa pamalo otulukira pa pampu kapena compressor kuti isabwererenso madzi. Chifukwa valavu yoyang'anira kayendedwe ka mpweya wa axial ili ndi mphamvu yothamanga kwambiri, kukana kuyenda pang'ono, kayendedwe kabwino, kutseka kodalirika komanso kusakhala ndi nyundo yamadzi potsegula ndi kutseka. Imayikidwa pamalo olowera madzi a pampu yamadzi ndipo imatha kutsekedwa mwachangu madzi asanabwererenso. , kuti tipewe nyundo yamadzi, phokoso la nyundo yamadzi ndi kuwonongeka kwakukulu kuti tipeze zotsatira zosasunthika. Chifukwa chake, yagwiritsidwa ntchito kwambiri m'mapaipi amafuta ndi gasi akutali, madzi akuluakulu a nyukiliya, ma compressor ndi mapampu akuluakulu m'mafakitale akuluakulu a ethylene, ndi zina zotero.
Amapangidwa makamaka ndi thupi la valavu, mpando wa valavu, diski ya valavu, kasupe, ndodo yotsogolera, chivundikiro cha chitsogozo, chivundikiro cha chitsogozo ndi zina. Pamwamba pa thupi la valavu, chivundikiro cha chitsogozo, diski ya valavu ndi malo ena odutsa madzi ayenera kukhala olinganizidwa kuti agwirizane ndi kapangidwe ka mawonekedwe a hydraulic, ndipo ayenera kuzungulira kutsogolo ndikulunjika kumbuyo kuti apeze njira yabwino yolumikizira madzi. Madziwo amachita ngati kuyenda kwa laminar pamwamba pake, popanda kugwedezeka pang'ono kapena kopanda. Mphepete mwa thupi la valavu ndi kapangidwe ka Venturi. Madziwo akamayenda kudzera mu ngalande ya valavu, amachepa pang'onopang'ono ndikukulirakulira, kuchepetsa kupanga kwa mafunde a eddy. Kutayika kwa kuthamanga kumakhala kochepa, kachitidwe ka madziwo ndi kokhazikika, palibe kutsekeka kwa madzi, komanso phokoso lotsika.
Ikhoza kuyikidwa mopingasa komanso moyimirira. Pamene dayamita yayikulu yayikidwa mopingasa, ndodo yotsogolera iyenera kukhala ndi mawonekedwe awiri otsogolera kuti ipewe kuwonongeka kwambiri mbali imodzi ya chikwama chotsogolera ndi ndodo yotsogolera chifukwa cha kulemera kwa diski ya valavu. Izi zimapangitsa kuti mphamvu yotsekera diski ya valavu ichepe ndipo phokoso liwonjezeke potseka.
Kusiyana pakati pa Ma valve oletsa kuletsa ndi ma valve oletsa kuletsa:
1. Kapangidwe ka valavu ndi kosiyana. Kapangidwe ka valavu yoyezera silencer ndi kosavuta, ndipo valavu yoyezera mayendedwe ali ndi kapangidwe kachizolowezi. Kapangidwe ka valavu yoyezera mayendedwe a axial ndi kovuta pang'ono. Mphepete mwa thupi la valavu ndi kapangidwe ka Venturi komwe kali ndi chitsogozo cha mayendedwe mkati. Malo onse oyendera ndi osavuta. Kusintha kosalala kwa mayendedwe kumachepetsa mafunde a eddy ndipo kumachepetsa bwino kukana mayendedwe.
2. Kapangidwe ka kutseka pakati pa valavu ndi kosiyana. Valavu yowunikira silencer imagwiritsa ntchito valavu yotsekedwa bwino ya rabara, ndipo valavu yonse imakutidwa ndi rabala, kapena mpando wa valavu umatsekedwa ndi mphete ya rabala. Mavavu owunikira kuyenda kwa axial amatha kugwiritsa ntchito zisindikizo zolimba zachitsulo ndi pamwamba pa alloy yolimba, kapena zomangira zofewa komanso zolimba zomangira. Malo otsekera amakhala olimba kwambiri ndipo amawonjezera moyo wautumiki.
3. Mikhalidwe yogwirira ntchito ndi yosiyana. Ma valve oyesera chete amagwiritsidwa ntchito makamaka m'mapaipi otenthetsera bwino monga machitidwe amadzi, okhala ndi mphamvu zochepa PN10--PN25 ndi mainchesi DN25-DN500. Zipangizo zimaphatikizapo chitsulo chosungunuka, chitsulo chosungunuka, ndi chitsulo chosapanga dzimbiri. Ma valve oyesera kuyenda kwa axial amagwiritsidwa ntchito m'njira zosiyanasiyana, kuyambira mpweya wachilengedwe wosungunuka pa kutentha kochepa kwa -161°C mpaka nthunzi yotentha kwambiri. Kuthamanga pang'ono PN16-PN250, muyezo waku America wa Class150-Class1500. M'mimba mwake DN25-DN2000.