Chitsulo chosindikizidwa padziko lonse lapansi
1. Molunjika kudzera vavu lonse
"Molunjika" mu valavu yowongoka yapadziko lonse lapansi ndi chifukwa chakuti mathero ake olumikizirana ali pa olamulira, koma njira yake yamadzimadzi si "yolunjika" kwenikweni, koma yovuta. Kuyenda kuyenera kutembenukira 90 ° kuti idutse pampando ndikubwerera 90 ° kuti ibwerere komwe idayambira. Mu mavavu oponyedwa, mawonekedwe amtundu ndi dera amasiyanasiyana kutengera kukula kwa valavu ndi kuchuluka kwa kuthamanga.
Z njira ya valavu yodulidwa, kapena kulipira kwa thupi lolimba kwaulere nthawi zambiri kumabweretsa ndi kutumiza doko komanso mzere wapayipi kupita ku Angle inayake, yomwe ndi mawonekedwe a Z otuluka, ndipo nthawi zambiri imachepetsa, komabe kabowo ndi kasupe otaya kwambiri kumawonjezera madzimadzi kutaya kwa magazi, kuphatikiza apo tiyenera kukumbukira kuti kutembenuza Angle pachimake pakugwira ntchito kwa madzimadzi cavitation chodabwitsa.
2. ngodya lonse valavu
Trace kumbuyo mbiri chitukuko cha valavu lonse, chitukuko koyamba ndi ngodya vavu lonse, ndiyeno pang'onopang'ono anayamba molunjika-kudzera vavu lonse. Ngakhale ma valve apadziko lonse lapansi amagwiritsidwa ntchito masiku ano, ma valve a Angle globe amakhalabe ndi mwayi wapadera.
Mavavu apadziko lonse lapansi amalola kuti mayendedwe asinthe mayendedwe 90 ndipo nthawi zonse amalowa pansi pa mpando. Wothamangayo amakhala wotseguka komanso wosakhwimitsa kuposa kuwongoka, chifukwa chake sipamakhala zovuta zambiri. Mavavu apadziko lonse lapansi samakokoloka mosavuta ndi tinthu tolimba. Chimbale akhoza kupanga claw kapena siketi mawonekedwe malamulo bwino. Chifukwa cha kusintha kwa mayendedwe, thupi la valavu lidzakhudzidwa ndimphamvu yamadzimadzi. Mphamvu izi nthawi zambiri zimakhala zazing'ono koma zimatha kuchuluka chifukwa cha kukula kwa valavu komanso kuchuluka kwake kwamadzimadzi.
Ma valve ang'onoang'ono amkuwa amtundu wa Angle globe amagwiritsidwa ntchito kwambiri mumadzi oyera. Ma valves ambiri ama Angle globe amakhala ndi mtundu wa bonnet wopangidwa ndi chitsulo chosungunula, bronze, chitsulo chosapanga dzimbiri, ndi zida zachitsulo za duplex.
Makulidwe wamba ndi magulu opanikizika amagetsi a Angle globe nthawi zambiri amakhala DN50 ~ 250 (NPS2 ~ 10), Class 150 ~ 800. Pambuyo pake, chimbale chogwiritsidwa ntchito nthawi zambiri chimagwiritsidwa ntchito pochepetsa axial madzimadzi omwe amaponyera tsinde.
3, valavu yowongoka yolunjika
Valavu yolunjika yapadziko lonse lapansi imadziwikanso kuti valavu yapadziko lonse yoboola Y kapena valavu ya oblique globe, itha kukhala valavu yolunjika pakati ndi Angle mkatikati mwa boma. Pofuna kusintha njira yolunjika yodutsa madzi, bowo la mpando wa valavu ndi kapangidwe ka thupi la valavu mu Angle inayake, kuti njira yolowera ikhale yolunjika kwambiri ndi olamulira, kuti muchepetse kuchepa kwa kuthamanga, chifukwa chake amatchedwa " kuyenda molunjika ”. Kapangidwe kameneka ndi kotchuka pamafunso ambiri ndipo kamagwiritsidwa ntchito kwambiri pamagetsi. Mphamvu zoyendera zolimba zakula bwino, koma kuyesa mosamala kumafunikira kuti mugwiritse ntchito. Ma valve oyenda padziko lonse lapansi amakhalanso ndi njira imodzi yokha yoyendera. Wothamangayo ali ndi m'mimba mwake modzaza ndikuchepetsa. Sikoyenera kuyendetsa nkhumba popanda kuchotsa bonnet.
Diski nthawi zambiri imakhala yopanda pake, yolamulidwa kapena yopendekedwa kuti ikwaniritse zofunikira zosiyanasiyana. Mbiri ya disc yama disc imatha kupangidwa ndi ma taper angapo kuti apange kuphulika koyambirira komanso kwachiwiri. Lathyathyathya chimbale ndi claw kalozera chimbale mavavu akhoza zokuzira ndi misozi kuyeretsa mpando isanafike kusindikiza, kapena chisindikizo labala akhoza zokuzira mpando kusintha vavu kusindikiza.
Molunjika otaya mavavu padziko nthawi zambiri amaponyedwa ndi mavavu kuthamanga linapanga. Malinga ndi magwiridwe antchito osiyanasiyana, zida zapadera monga magawo awiri azitsulo zosapanga dzimbiri zimatha kusankhidwa.
4. Zitatu zapadziko lonse lapansi
Ma valavu amitundu itatu amagwiritsidwa ntchito ngati ma valve oyenda munjira zamagetsi. Mwachitsanzo, kutentha kwapamwamba komanso kuthamanga mavavu amagetsi oyatsira magetsi. Kuyenda nthawi zambiri kumagwiritsidwa ntchito poyambira, kutseka, kapena kulephera.
Chinthu chinanso chofala kwambiri ngati valavu yotembenuza ndi njira yothandizira. Mavavu awiri othandizira amakwera pa valavu imodzi itatu yapadziko lonse lapansi, kulola kuti valavu inayo izigwira bwino ntchito ngati imodzi mwa izo ikufuna kudzipatula kapena kuthandizira. Chifukwa cha kapangidwe kake, ma valve atatu apadziko lonse lapansi amakhala ndi kuthamanga kwakanthawi. Kusintha kwa mayendedwe amadzimadzi kumatulutsa mphamvu yayikulu pamiyeso yayikulu yazitatu zapadziko lonse lapansi.
Thupi la ma valavu apadziko lonse lapansi nthawi zambiri limakhala ndi chitsulo kapena chitsulo. Mavavu omwe amagwiritsidwa ntchito muzomera zamagetsi amatenthedwa kuti athetse mavuto omwe amatuluka chifukwa cha kulumikizana kwazitsulo.
Nthawi yamakalata: Mar-24-2021