Malo oyikapo akachepa, chonde tcherani khutu ku:

Valve yachipata ikhoza kutsekedwa mwamphamvu ndi malo osindikizira ndi kuthamanga kwapakati, kuti akwaniritse zotsatira za kutayikira.Potsegula ndi kutseka, chigawo cha valve ndi malo osindikizira mpando wa valve nthawi zonse amalumikizana ndi kupakana wina ndi mzake, kotero kuti kusindikiza pamwamba kumakhala kosavuta kuvala.Pamene valve yachipata ili pafupi kutseka, kusiyana kwapakati pakati pa kutsogolo ndi kumbuyo kwa payipi kumakhala kwakukulu, zomwe zimapangitsa kuti malo osindikizira azivala kwambiri.

Mapangidwe a valve yachipata adzakhala ovuta kwambiri kuposa valve ya globe.Kutengera mawonekedwe, valavu yachipata ndi yayitali kuposa valavu yapadziko lonse lapansi ndipo valavu yapadziko lonse lapansi ndi yayitali kuposa valavu yachipata pansi pa mainchesi omwewo.Kuphatikiza apo, ma valve a zipata amagawidwa kukhala ndodo zotseguka ndi ndodo zakuda.Valve yotseka sichitha.

Kodi valavu yapadziko lonse ndi valavu yachipata ingasakanizidwe?

mfundo yogwirira ntchito

Pamene valavu yapadziko lonse imatsegulidwa ndi kutsekedwa, ndi mtundu wa tsinde la valve, ndiko kuti, pamene gudumu lamanja litembenuzidwa, gudumu lamanja lidzazungulira ndikukweza pamodzi ndi tsinde la valve.Valve yachipata ndi kutembenuza gudumu lamanja kuti tsinde la valavu lisunthike mmwamba ndi pansi, ndipo malo a handwheelwo amakhalabe osasintha.

Mayendedwe amasiyanasiyana, mavavu a zipata amafunikira kutsegulidwa kwathunthu kapena kutsekedwa kwathunthu, ndipo ma valve a globe samatero.Mavavu a globe ali ndi njira yolowera ndi potuluka, pomwe mavavu a pachipata alibe zofunika panjira yolowera ndi potuluka.

Kuonjezera apo, valve yachipata ili ndi zigawo ziwiri zokha: kutsegulidwa kwathunthu kapena kutsekedwa kwathunthu, chitseko chotsegula ndi kutseka chitseko ndi chachikulu, ndipo nthawi yotsegula ndi yotseka ndi yaitali.Kusuntha kwa valve ya valve ya globe ndi yaying'ono kwambiri, ndipo valavu ya valve ya globe imatha kuyima pamalo ena panthawi yoyendetsa kayendedwe ka kayendedwe ka kayendedwe kake.Valve yachipata imatha kugwiritsidwa ntchito podulira ndipo ilibe ntchito zina.

Kusiyana kwa magwiridwe antchito

Valve yapadziko lonse lapansi imatha kugwiritsidwa ntchito podula komanso kuwongolera kuyenda.Kukaniza kwamadzimadzi kwa valve yapadziko lonse lapansi ndikokulirapo, ndipo kumakhala kovuta kwambiri kutsegula ndi kutseka, koma chifukwa mtunda pakati pa mbale ya valve ndi malo osindikizira ndi waufupi, sitiroko yotsegula ndi yotseka imakhala yochepa.

Chifukwa valavu yachipata imatha kutsegulidwa kwathunthu ndi kutsekedwa kwathunthu, ikatsegulidwa kwathunthu, kukana kwapakati pamayendedwe a valve thupi kumakhala pafupifupi 0, kotero kutsegula ndi kutseka kwa valve yachipata kudzakhala kupulumutsa ntchito, koma chipata chili kutali ndi malo osindikizira, ndipo nthawi yotsegula ndi yotseka ndi yaitali..

kukhazikitsa ndi kuyenda

Thevalve pachipataali ndi zotsatira zofanana mbali zonse ziwiri.Palibe chofunikira pakuwongolera kolowera ndi kutulutsa, ndipo sing'anga imatha kuyenda mbali zonse ziwiri.Valavu yapadziko lonse lapansi iyenera kukhazikitsidwa motsatira malangizo omwe alembedwa ndi muvi pa thupi la valve.Palinso malamulo omveka bwino okhudza malo olowera ndi kutuluka kwa valve yapadziko lonse."Njira zitatu zamankhwala" za mavavu m'dziko langa zimanena kuti njira yoyendetsera ma valve padziko lonse lapansi iyenera kukhala kuchokera pamwamba mpaka pansi.

Vavu yapadziko lonse lapansi ndi yotsika komanso yokwera, ndipo zikuwonekeratu kuchokera kunja kuti payipi siili pamzere wopingasa wa gawo limodzi.Njira yoyendetsera valve pachipata ili pamzere wopingasa.Kugunda kwa valve pachipata ndi kwakukulu kuposa kwa valve yapadziko lonse lapansi.

Kuchokera pakuwona kukaniza koyenda, kukana kwa valve ya chipata kumakhala kochepa pamene kutsegulidwa kwathunthu, ndipo kukana kwa kayendedwe kake ka katundu ndi kwakukulu.Kuthamanga kwamphamvu kwa ma valve wamba a pachipata ndi pafupifupi 0.08 ~ 0.12, mphamvu yotsegula ndi yotseka ndi yaying'ono, ndipo sing'anga imatha kuyenda mbali ziwiri.Kukaniza kwa ma valve wamba padziko lonse lapansi ndi nthawi 3-5 kuposa mavavu a pachipata.Potsegula ndi kutseka, iyenera kukakamizidwa kutseka kuti ikwaniritse kusindikiza.Pakatikati pa valve ya valavu ya globe imangolumikizana ndi malo osindikizira pamene yatsekedwa kwathunthu, kotero kuvala kwa malo osindikizira kumakhala kochepa kwambiri.Chifukwa chakuyenda kwakukulu kwa mphamvu yayikulu, valavu yapadziko lonse yomwe imafunikira actuator iyenera kulabadira makina owongolera ma torque.Kusintha.

Pali njira ziwiri zoyika valavu yapadziko lonse lapansi.Chimodzi ndi chakuti sing'anga imatha kulowa kuchokera pansi pa valve core.Ubwino wake ndikuti kulongedzako sikuli kupanikizika pamene valavu yatsekedwa, yomwe imatha kupititsa patsogolo moyo wautumiki wa kulongedza ndipo ikhoza kunyamula kupanikizika mu payipi pamaso pa valve.Pansi pazimenezi, kusinthidwa kwa kulongedza kumachitika;choyipa ndichakuti kuthamanga kwa valavu ndi kwakukulu, komwe kumakhala pafupifupi 1 nthawi yakuyenda kumtunda, mphamvu ya axial pa tsinde la valve ndi yayikulu, ndipo tsinde la valve ndi losavuta kupindika.

Choncho, njira imeneyi nthawi zambiri ndi yoyenera kwa mavavu ang'onoang'ono a globe (pansi pa DN50), ndipo ma valve a globe pamwamba pa DN200 amagwiritsa ntchito njira yomwe sing'anga imayenda kuchokera pamwamba.(Vavu yamagetsi yamagetsi nthawi zambiri imatenga njira yolowera pakati kuchokera pamwamba.) Kuipa kolowera pakati kuchokera pamwamba kumangosiyana ndi njira yolowera kuchokera pansi.

sindikiza pa

Kusindikiza pamwamba pa valavu ya globe ndi mbali yaing'ono ya trapezoidal ya valve core (makamaka zimatengera mawonekedwe a valve core).Pamene phokoso la valve likugwa, ndilofanana ndi kutseka kwa valve (ngati kusiyana kwapakati kuli kwakukulu, ndithudi, sikutsekedwa mwamphamvu, koma anti-reverse effect si yoipa).Valve yachipata imasindikizidwa pambali pa chipata chapakati cha valve.