Mavavu a Globe, mavavu a zipata, ma valve agulugufe, ma cheke ma valve ndi ma valve a mpira ndizinthu zofunika kwambiri zowongolera pamapaipi osiyanasiyana masiku ano. Vavu iliyonse imakhala yosiyana ndi mawonekedwe, kapangidwe kake komanso kagwiritsidwe ntchito. Komabe, valavu yapadziko lonse ndi valavu yachipata zimakhala ndi mawonekedwe ofanana, ndipo panthawi imodzimodziyo zimakhala ndi ntchito ya truncation mu payipi, kotero padzakhala mabwenzi ambiri omwe alibe kukhudzana kwambiri ndi valve kuti asokoneze awiriwo. M'malo mwake, ngati muyang'anitsitsa, kusiyana pakati pa valavu yapadziko lonse ndi valve yachipata kumakhalabe kwakukulu.
- Kapangidwe
Pankhani ya malo ochepa oyikapo, ndikofunikira kulabadira kusankha kwa:
Valve yachipata ikhoza kutsekedwa mwamphamvu ndi malo osindikizira podalira kupanikizika kwapakati, kuti akwaniritse zotsatira za kutayikira. Potsegula ndi kutseka, valve spool ndi mpando wosindikizira mpando wa valve nthawi zonse amalumikizana wina ndi mzake ndikupukuta wina ndi mzake, kotero kuti kusindikiza pamwamba kumakhala kosavuta kuvala, ndipo pamene valve yachipata ili pafupi kutseka, kusiyana kwapakati kutsogolo ndi kumbuyo kwa payipi ndi kwakukulu kwambiri, zomwe zimapangitsa kuti malo osindikizira azikhala ovuta kwambiri.
Mapangidwe a valavu yachipata adzakhala ovuta kwambiri kuposa valavu yapadziko lonse, kuchokera kumalo owonekera, pamtundu womwewo, valavu yachipata ndi yapamwamba kuposa valavu yapadziko lonse, ndipo valavu yapadziko lonse ndi yaitali kuposa valve yachipata. . Kuphatikiza apo, valavu yachipata imagawidwa kukhala ndodo yowala ndi ndodo yakuda. Valve yapadziko lonse lapansi siili.
- Ntchito
Pamene valavu yapadziko lonse imatsegulidwa ndi kutsekedwa, ndi mtundu wa tsinde wokwera, ndiko kuti, gudumu lamanja limazungulira, ndipo gudumu lamanja lidzachita kuzungulira ndi kukweza kayendedwe pamodzi ndi tsinde la valve. Valve yachipata ndi kutembenuza gudumu lamanja, kotero kuti tsinde limachita kukweza, ndipo malo a handwheelwo amakhalabe osasinthika.
Mayendedwe amasiyanasiyana, ndi mavavu a zipata omwe amafunikira kutsekedwa kwathunthu kapena kwathunthu, pomwe ma valve a globe satero. Valavu yapadziko lonse lapansi ili ndi njira yolowera ndi njira yotulutsira, ndipo valavu yachipata ilibe zofunikira zolowera ndi kutumiza kunja.
Kuonjezera apo, valavu yachipata imangotsegulidwa kwathunthu kapena kutsekedwa kwathunthu zigawo ziwiri, chipata chotsegula ndi kutseka kwa sitiroko ndi yaikulu kwambiri, nthawi yotsegula ndi yotseka ndi yaitali. Kugunda kwa valavu ya valve yapadziko lonse lapansi ndikocheperako, ndipo valavu ya valve yapadziko lonse lapansi imatha kuyima pamalo ena kuti isinthe. Valve yachipata imatha kugwiritsidwa ntchito podulira ndipo ilibe ntchito ina.
- Kachitidwe
Valve yapadziko lonse lapansi imatha kugwiritsidwa ntchito pochepetsa komanso kuwongolera kuyenda. Kukaniza kwamadzimadzi kwa valavu yapadziko lonse lapansi ndikokulirapo, ndipo kumakhala kovutirapo kutsegula ndi kutseka, koma chifukwa mbale ya valve ndi yayifupi kuchokera pamalo osindikizira, sitiroko yotsegula ndi yotseka ndiyofupika.
Chifukwa valavu yachipata imatha kutsegulidwa kwathunthu ndi kutsekedwa kwathunthu, ikatsegulidwa kwathunthu, kukana kwapakati pamayendedwe a valve thupi pafupifupi 0, kotero kutsegula ndi kutseka kwa valve ya chipata kudzakhala kupulumutsa ntchito, koma mbale ya pachipata ili kutali ndi malo osindikizira, ndipo nthawi yotsegula ndi yotseka ndi yaitali.
- Kuyika ndi njira yoyendetsera
Zotsatira za valavu yachipata yomwe ikuyenda mbali zonse ziwiri ndizofanana, ndipo palibe chofunikira pa njira yolowera ndi kutuluka, ndipo sing'anga imatha kuyenda mbali zonse ziwiri. Vavu yapadziko lonse lapansi iyenera kukhazikitsidwa motsatira malangizo a chizindikiritso cha muvi wa valavu, ndipo pali makonzedwe omveka bwino pamayendedwe olowera ndi kutumiza kunja kwa valavu yapadziko lonse lapansi, komanso njira yoyendera ya valavu yapadziko lonse lapansi "zitatu mpaka zitatu". ” ku China kumachokera pamwamba mpaka pansi.
Valve yapadziko lonse lapansi ndi yotsika komanso yokwera, ndipo kuchokera kunja pali mapaipi odziwikiratu omwe sali pamlingo wagawo. Wothamanga wa valve pachipata ali pamzere wopingasa. Kugunda kwa valve pachipata ndi kwakukulu kuposa kwa valve yapadziko lonse lapansi.
Kuchokera pakuwona kukana kothamanga, kuthamanga kwa valve ya chipata kumakhala kochepa pamene kutsegulidwa kwathunthu, ndipo kukana kwa valve stop stop ndi kwakukulu. Kuthamanga kwamagetsi kwa valve wamba yachipata 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 otsekera ndi nthawi 3-5 kuposa ma valve a pachipata. Potsegula ndi kutseka, ndikofunikira kukakamiza kutseka kuti mukwaniritse chisindikizo, valavu ya valve ya globe valve imangolumikizana ndi malo osindikizira pamene yatsekedwa kwathunthu, kotero kuvala kwa malo osindikizira kumakhala kochepa kwambiri, chifukwa Kuthamanga kwa mphamvu yayikulu kumafunika kuwonjezera actuator Ya valve yapadziko lonse lapansi iyenera kulabadira kusintha kwa torque control mechanism.
Valve yapadziko lonse lapansi ili ndi njira ziwiri zokhazikitsira, imodzi ndi yakuti sing'anga imatha kulowa pansi pa valve spool, ubwino wake ndikuti pamene valavu yatsekedwa, kulongedza sikukupanikizika, moyo wautumiki wa kulongedza ukhoza kuwonjezeredwa, ndipo ntchito m'malo kulongedza katundu akhoza kuchitidwa pansi pa kupsyinjika mu payipi kutsogolo kwa valavu; choyipa ndichakuti kuthamanga kwa valavu ndi kwakukulu, komwe kumakhala pafupifupi 1 nthawi yakuyenda kumtunda, ndipo mphamvu ya axial ya tsinde la valve ndi yayikulu, ndipo tsinde la valve ndi losavuta kupindika.
Chifukwa chake, njira iyi nthawi zambiri ndiyoyenera mavavu ang'onoang'ono a globe (DN50 kapena kuchepera), ndipo ma valve padziko lonse lapansi pamwamba pa DN200 amasankhidwa kuti azitha kuyenda kuchokera pamwamba. (Ma valve otseka magetsi nthawi zambiri amagwiritsa ntchito sing'anga kuti alowe kuchokera pamwamba.) Zoyipa za njira yolumikizira zowulutsira kuchokera pamwamba ndizosiyana ndendende ndi momwe zimalowera pansipa.
- Kusindikiza
Kusindikiza pamwamba pa valavu ya globe ndi mbali yaing'ono ya trapezoidal ya valve core (makamaka yang'anani mawonekedwe a valve core), pamene phokoso la valve likugwa, ndilofanana ndi kutseka kwa valve (ngati kusiyana kwapakati ndi kwakukulu, Inde, kutseka sikuli kolimba, koma zotsatira zake sizoyipa), valavu yachipata imasindikizidwa pambali ya mbale yapachipata cha valve, kusindikiza sikuli bwino ngati valavu ya globe, ndipo pakati pa valve sichidzagwa ngati valavu yapadziko lonse lapansi.
Nthawi yotumiza: Apr-01-2022
