Kusankha valavu yosungiramo madzi oundana Kodi mukudziwa zida zosindikizira ma valve? Kodi zinthu zosindikizira zimakhala zotani?
Kusankha mavavu kuyenera kuyang'ananso vutoli:
(1) magetsi kulamulira valavu, lophimba valavu kusindikiza ntchito ayenera kukhala okhwima ndi ndondomeko amaundana ndi kusungunula, ethylene glycol mbali mu siteji inayake idzayenda pa 2.19 ℃ / 5.56 ℃ osiyanasiyana kutentha, mbali ina ya mbale mu chilled. madzi mu 12 ℃, 7 ℃ / kawirikawiri kuthamanga, ngati bolodi mu ethylene glycol mbali chatsekedwa kutayikira kutayikira, zingachititse mbale mu madzi oundana amaundana amaundana mbali imodzi, amaundana-akulimbana zida.
(2) Vavu yoyendera ndi valavu yodutsa iyenera kukhazikitsidwa mbali zonse za valve yamagetsi; Pakuti kukonza dongosolo, ndi ntchito pamanja.
Vavu yamagetsi iyenera kukhala ndi chipangizo chothandizira chothandizira.
Kodi mukudziwa zida zosindikizira ma valve? Kodi zinthu zosindikizira zimakhala zotani?
Mfundo yosindikiza ma valve
Kusindikiza ndikuteteza kutayikira, kotero mfundo yosindikiza ma valve ndikuletsanso kufufuza kwa kutayikira. Pali zifukwa ziwiri zazikulu zomwe zimayambitsa kutayikira. Chimodzi ndi chinthu chachikulu chomwe chimakhudza kusindikiza, ndiko kuti, pali kusiyana pakati pa kusindikiza, ndipo china ndi chakuti pali kusiyana kwapakati pakati pa mbali ziwiri za kusindikiza. Mfundo yosindikizira ma valve imachokeranso ku kusindikiza kwamadzimadzi, kusindikiza kwa gasi, mfundo yosindikizira njira yotayira ndi kusindikiza ma valve ndi zina zinayi zowunikira.
01 Kulimba kwamadzimadzi
Kulimba kwamadzimadzi kumatsimikiziridwa ndi kukhuthala kwake komanso kugwedezeka kwamadzi. Pamene valavu yothamanga ya capillary yadzazidwa ndi mpweya, kuthamanga kwa pamwamba kungathe kuthamangitsa kapena kutulutsa madzi mu capillary. Ndipo izo zimapanga tangent Angle. Pamene tangent ngodya ndi zosakwana 90, madzi jekeseni mu capillary chubu ndi kutayikira kumachitika. Chifukwa cha kutayikira chagona zosiyanasiyana katundu wa sing'anga. Yesani ndi zofalitsa zosiyanasiyana, pansi pa chikhalidwe chomwecho, mudzapeza zotsatira zosiyana. Mukhoza kugwiritsa ntchito madzi, mpweya, palafini, etc. Pamene tangent Angle ndi wamkulu kuposa 90, kutayikira kudzachitikanso. Chifukwa cha ubale ndi mafuta kapena sera filimu pa zitsulo pamwamba. Mafilimu apamwambawa akasungunuka, mawonekedwe achitsulo amasintha, ndipo madzi, omwe poyamba adakanidwa, amanyowetsa pamwamba ndi kutuluka. Poganizira zomwe zili pamwambazi, malinga ndi dongosolo la Poisson, cholinga chopewa kutayikira kapena kuchepetsa kutayikira chingathe kukwaniritsidwa pansi pa kuchepetsa kukula kwa capillary ndi viscosity yapakatikati.
2 Kuthina kwa gasi
Malinga ndi chilinganizo cha Poisson, kulimba kwa gasi kumagwirizana ndi ma molekyulu a mpweya ndi kukhuthala kwa gasi. Kutayikira kumayenderana mosiyanasiyana ndi kutalika kwa capillary ndi kukhuthala kwa mpweya, komanso molingana ndi kukula kwa capillary ndi mphamvu yoyendetsa. Pamene kukula kwa capillary ndi madigiri ambiri a ufulu wa mamolekyu a gasi ali ofanana, ma molekyulu a mpweya adzalowa mu capillary ndi kuyenda kwaufulu kwamafuta. Choncho, tikamayesa kusindikiza ma valve, sing'anga iyenera kukhala madzi kuti igwire ntchito yosindikiza, ndi mpweya kapena mpweya sungathe kugwira ntchito yosindikiza. Ngakhale titachepetsa kukula kwa capillary pansi pa molekyulu ya gasi ndi mapindikidwe apulasitiki, kutuluka kwa mpweya sikungaimitsidwebe. Chifukwa chake ndi chakuti gasi amathabe kufalikira kudzera m'makoma achitsulo. Chifukwa chake tikayesa gasi, tiyenera kukhala okhwima kuposa kuyesa kwamadzi.
3 Kusindikiza Mfundo ya kutayikira njira
Chisindikizo cha valve chimapangidwa ndi magawo awiri, roughness, yomwe imapangidwa ndi kukhwima kwa kusalinganika komwe kumafalikira pamtunda wa waveform ndi kuyendayenda kwa mtunda pakati pa nsonga. Pokhala kuti mphamvu zotanuka zazinthu zambiri zazitsulo ndizochepa m'dziko lathu, tikuyenera kukweza zofunikira za kukakamiza kwazitsulo zazitsulo, ndiko kuti, mphamvu yopondereza yazinthu iyenera kupitirira kusungunuka kwake, ngati tikufuna kukwaniritsa dziko losindikiza. Choncho, pakupanga valavu, awiri osindikizira pamodzi ndi kusiyana kwina kwa kuuma kuti agwirizane, pansi pa kukakamizidwa, adzatulutsa mlingo wina wa kusindikiza kwa pulasitiki. Ngati kusindikiza pamwamba ndi zitsulo zakuthupi, ndiye kuti pamwamba pa mfundo yosagwirizana ndi ma convex idzawoneka koyambirira, kumayambiriro kokha ndi katundu wochepa akhoza kupanga mapindikidwe a pulasitiki a convex point. Pamene kukhudzana kumawonjezeka, kusagwirizana kwapamwamba kumakhala pulasitiki - zotanuka deformation. Ndiye roughness wa pamwamba awiri malo concave adzakhalapo. Njira zotsalirazi zikhoza kupangidwa kuti zigwirizane ndi katundu womwe umayambitsa kusinthika kwakukulu kwa pulasitiki kwa zinthu zomwe zili pansi pake ndipo zigawo ziwirizo zimagwirizana kwambiri, motsatira mzere wopitirira komanso njira ya mphete.
4. Mavavu osindikizira awiri
The valve seal pair ndi gawo la mpando wa valve ndi shutoff yomwe imatseka pamene ikukhudzana. Chitsulo chosindikizira pamwamba chimakhala chowonongeka kuchokera ku clamping media, media corrosion, kuvala particles, cavitation ndi kukokoloka pakagwiritsidwa ntchito. Monga kuvala particles. Ngati tinthu tating'onoting'ono tating'onoting'ono tomwe timakhala ndi roughness pamwamba, kulondola kwapamwamba kudzakhala bwino pamene malo osindikizira akuyendetsedwa, ndipo sichidzawonongeka. M'malo mwake, zidzapangitsa kulondola kwapamwamba kwambiri. Chifukwa chake, pakusankhidwa kwa tinthu tating'onoting'ono, zinthu, mawonekedwe ogwirira ntchito, zokometsera ndi dzimbiri za malo osindikizira ziyenera kuganiziridwa mozama. Monga tinthu tating'onoting'ono, tikamasankha zisindikizo, tiyenera kuganizira mozama zinthu zosiyanasiyana zomwe zimakhudza magwiridwe antchito awo kuti tigwire ntchito yoletsa kutayikira. Chifukwa chake, zida zomwe zimalimbana ndi dzimbiri, abrasion ndi kukokoloka ziyenera kusankhidwa. Kupanda kutero, kusowa kwa chilichonse mwazofunikira kumapangitsa kuti ntchito yake yosindikiza ** ichepe.
2. Zinthu zazikulu zomwe zimakhudza chisindikizo cha valve
Pali zinthu zambiri zomwe zimakhudza chisindikizo cha valve, makamaka izi:
Nthawi yotumiza: Aug-06-2022
