Mavuto odziwika a kutentha kwa ng'anjo yamoto yotetezera valve valve Kusanthula Chidziwitso choyambirira cha valve yotetezera

Mavuto odziwika a kutentha kwa ng'anjo yamoto yotetezera valve valve Kusanthula Chidziwitso choyambirira cha valavu yotetezera 1. Mauthenga Oyambira Chitetezo ndi valavu yofunikira yokonza pakhomo, yomwe imagwiritsidwa ntchito pazitsulo zosiyanasiyana zothamanga kwambiri ndi mapaipi otumizira, pamene kupanikizika kwa ntchito mu dongosolo lopanikizika kumapitirira muyezo. mtengo, akhoza basi kutsegula, zinthu owonjezera kutayidwa mu mlengalenga, kuonetsetsa ntchito otetezeka ziwiya kuthamanga kwambiri ndi mipope kunyamula, kupewa kuchitika kwa zochitika, Koma pamene kuthamanga mu dongosolo mapulogalamu akutsikira mmbuyo kukakamizidwa kapena pansi pang'ono. kupanikizika, kumatha kutuluka. Ntchito yokhudzana ndi chitetezo cha valve ikugwirizana mwachindunji ndi chitetezo cha zida ndi chitetezo chaumwini, kotero tiyenera kusamala kwambiri. 2. Zomwe zimayambitsa ndi zothetsera mavuto omwe amapezeka pachitetezo cha valavu 2.1, kutuluka kwa chipata  Pansi pa kupanikizika kwachizolowezi kwa dongosolo, kutuluka kwa valavu ya pistoni ndi valavu yachipata chapamwamba pamtunda wosindikizira kumadutsa mlingo wovomerezeka, ndipo kutayikira kwa valavu valavu yachitetezo sichidzangowononga zinthu zokha. Kuonjezera apo, sing'anga idzapitirizabe kutulutsa zisindikizo zolimba za mphira zidzawonongeka, komabe, kusindikiza pamwamba pa valve yotetezera chitetezo ndizitsulo zonse zazitsulo zopangidwa ndi zitsulo, ngakhale kuti zizichita bwino komanso mwadongosolo, koma n'zovuta kwambiri kuonetsetsa kuti madzi. kutayikira pansi pa maziko a chuma mpumulo. Choncho, kwa sing'anga ndi nthunzi chitetezo valavu, pansi pa kupanikizika kwapadera kwa dongosolo, ngati diso lamaliseche silingathe kuwona pakhomo ndi kutuluka kumapeto, komanso silingamve kutayikira, kuganiza kuti kumangika kumagwirizana ndi zofunikira. Nthawi zambiri, pali zifukwa zitatu zazikuluzikulu za kutayikira kwa valve pachipata: Mlandu umodzi ndikuti zotsalira zonyansa zimagwera pamalo osindikizira, ndipo malo osindikizira amaphimbidwa, zomwe zimapangitsa kusiyana pakati pa spool ndi valve yothamanga kwambiri, kenako chipata. kutha kwa valve. Njira kuchotsa mtundu uwu wa vuto wamba ndi kuphulika mu dothi ndi zotsalira mu kusindikiza pamwamba, zambiri mu Kutentha ng'anjo pasadakhale kukonzekera kukatentha kuphulika chitoliro kukula kukonza, woyamba kuchita chitetezo chitseko kutsogolera kuyesera, kamodzi anapeza. kuti kutayikira kotentha kuphulika chitoliro kunachitikanso kukonza kugwa, ngati ng'anjo kuthamanga mayeso otsogolera anapeza kuti chitetezo chitseko kutayikira, mwina chifukwa cha chinthu choterocho, Kutsogolera akhoza kuthamanga pambuyo mphindi 20 firiji ndiyeno kuthamanga a chiwongolero, malo osindikizira kuti azitsuka. Chinthu china ndi kuwonongeka kwa malo osindikizira. Zifukwa zazikulu zomwe zimayambitsa kuwonongeka kwa malo osindikizira ndi awa: Choyamba, zinthu zosindikizira zimakhala zosauka. Mwachitsanzo, mu No. 3 ~ 9 chitseko chachikulu cha chitetezo cha ng'anjo chifukwa cha zaka zosamalira, chitetezo chachikulu cha chitseko cha chitseko ndi chitseko chachikulu chosindikizira chitseko cha valve chakhala chikuphunziridwa kwambiri chochepa kwambiri, kotero kuti kuuma kwa kusindikiza kumachepetsedwa, zomwe zimapangitsa kuchepetsa kusindikiza, njira yoyenera kwambiri yochotsera vutoli ndi mphero yosindikizira yoyamba, ndiyeno malinga ndi zojambula zaumisiri kachiwiri kutsitsi kupanga kuwotcherera ndi kukonza, Kupititsa patsogolo kuuma kwa malo osindikizira. Samalani kupanga khalidwe ayenera kuonetsetsa mu ndondomeko kupanga, monga kusindikiza pamwamba ming'alu, mabowo mchenga ndi zofooka zina ayenera mphero pambuyo kupanga ndi processing. The new processing spool high pressure gate valve iyenera kukwaniritsa miyezo yojambula zomangamanga. Pakali pano, ntchito YST103 universal zitsulo kuwotcherera ndodo kutsitsi kuwotcherera processing kupanga valavu pachimake kusindikiza pamwamba ndi zabwino kwambiri. Chachiwiri, khalidwe lokonza silili labwino, spool high pressure gate valve kugaya sangathe kukwaniritsa miyezo ya khalidwe la mankhwala, njira yochotsera zolakwa zamtunduwu ndikugwiritsa ntchito njira yopera kapena mphero kukonza malo osindikizira malinga ndi digiri. za kuwonongeka. Chinthu chinanso chomwe chimapangitsa kuti ma valve otetezeka awonongeke ndikuyika molakwika kapena kukula kwa zigawozo ndi zazikulu kwambiri. Mu ulalo woyikapo, valavu ya spool high pressure gate siinakhale yolondola kapena pali kutayikira kopepuka pamalo olumikizirana, kapena kusindikiza pamwamba pa spool high pressure gate valve ndi yotakata kwambiri kuti isindikize. Yang'anani kukula ndi kufanana kwa chilolezo chozungulira msonkhano wa spool, onetsetsani kuti dzenje lakutsogolo la spool ndi malo osindikizira ndi ofanana, ndikuwona voids paliponse sangathe kutuluka mu spool; Malinga ndi zojambula zaumisiri, m'lifupi mwa kusindikiza pamwamba kuyenera kuchepetsedwa kuti akwaniritse kusindikiza koyenera. 2.2 bonding pamwamba kutayikira mafuta dera bolodi,  Amatanthawuza vuto kutayikira madzi pa yosalunjika pamwamba pa mbale wozungulira mafuta, kutsogolera mtundu uwu kutayikira ndi zifukwa zofunika zotsatirazi: choyamba, olowa pamwamba pa nangula bawuti kulimbitsa mphamvu sikokwanira. kapena zolimba, zomwe zimapangitsa kuti kulumikizana kusindikize pamwamba sikwabwino kwambiri. Kodi njira yoyeretsera yosinthira mphamvu yolimbitsa bolt ndi iti? Mukamangitsa bawuti ya nangula, iyenera kuchitidwa mwanjira yomangirira molingana ndi Angle yapamwamba. Ndi bwino kuyeza bwino malo pamalo aliwonse ndikumangitsa bawuti ya nangula mpaka osasuntha, kuti olowa azitha kukhala malo amodzi pamalo aliwonse. Chachiwiri, mafuta ozungulira mbale olowa pamwamba dzino mtundu kusindikiza gasket si kukwaniritsa zofunika. Mwachitsanzo, dzino losindikiza gasket axial pang'ono poyambira, flatness, dzino lakuthwa kwambiri kapena otsetsereka ndi zofooka zina zidzatsogolera kusindikiza kosagwira ntchito. Kotero kuti mafuta ozungulira mbale olowa pamwamba kutayikira. Pokonza mbali kuwongolera khalidwe, kusankha wa standardized dzino kusindikiza gaskets angapewe zimenezi. Chachitatu ndi mafuta ozungulira mbale omwe amalumikizana pamwamba pake ndi osauka kwambiri kapena zotsalira zotsalira zomwe zimapangitsa kuti asasindikize bwino. Kwa mafuta ozungulira mbale olowa pamwamba chifukwa cha kusasalala bwino kwa mbale yamafuta ozungulira kutayikira kwamadzi, njira yochotsera ndikugwetsa valavu yachipata ndikugayanso malo olowa mpaka itakumana ndi zinthu zomwe zimafunikira. Chifukwa chotsalira chotsalira chomwe chimayambitsidwa ndi kusindikiza sichikugwira ntchito, mu msonkhano wa valve wa pachipata chotsani mosamala pamwamba kuti zotsalirazo zigwere. 2.3, kaimidwe valavu chitetezo champhamvu Shu main security valve kaimidwe Mkhalidwewu umadziwikanso ngati kukana kwapachipata chachitetezo. Chitseko chachikulu chachitetezo chatsekedwa kugwiritsa ntchito kuwonongeka kwa ng'anjo yotentha kwambiri, ndi zida zazikulu zobisika zoopsa, kuvulaza kwakukulu kwa chitetezo cha makina ndi zida, kamodzi kokha kugwiritsa ntchito zombo zothamanga kwambiri ndi mapaipi muzinthu zomwe zimagwira ntchito kupyola. oveteredwa panopa, chachikulu chitetezo chitseko si kaimidwe, kotero kuti overpressure ntchito n'zosavuta kuwononga makina ndi zipangizo ndi ngozi zazikulu chitetezo. Musanayambe kuphunzira zifukwa zazikulu khomo chitetezo chachikulu kukana kusuntha, choyamba kupenda mfundo yaikulu ya ntchito yaikulu chitetezo chitseko. Monga momwe tawonetsera pa Chithunzi 1 pansipa, pamene kupanikizika kwa chotengera choponderezedwa kumakwera ku mphamvu yonse ya valve yotsitsimula, malo opangira mpweya wotsitsimula, zinthuzo zimachokera ku chidebe kupita ku chipinda chachikulu cha pistoni chachitetezo malinga ndi chitoliro, mu chipinda cha pisitoni padzakhala kuwonjezeka pang'ono kwa kuchepetsa kuthamanga kwa magazi, ngati kuthamanga kwa mpweya mu chipinda cha pisitoni ndi P1, malo a piston throttle ali pafupi Shs, ndiye f1 yomwe ikugwira pisitoni ndi: F1 = P1 ndi Shs ... .......................................... (1) Ngati kuthamanga kwa gasi wapakati chotengera choponderezedwa ndi P2, ndipo dera lapakati la valve ndi la Sfx, ndiye kuti mphamvu yolumikizirana f2 ya zinthu zomwe zimakankhira mmwamba pakatikati pa valavu ndi: F2 = P2 x Shx ... (2) Kutsegula kwa piston kwa valve mainchesi apakati pa valve ndi yayikulu, kotero mtundu (1) ndi (2) mtundu wa Shs > Sfx  P1 zinthu P2 nthawi zambiri mphamvu yothamanga pakati pa pisitoni ndi chipinda cha pisitoni) imayikidwa ngati fm kutengera mphamvu ya mpando wa valve motsutsana ndi spool, chofunikira kuti chitseko chachikulu chachitetezo chigwire ntchito ndi: Pokhapokha mphamvu yolumikizirana f1 ikugwira ntchito. pisitoni ndi yokulirapo pang'ono, mphamvu yolumikizirana f2 yomwe imagwiritsidwa ntchito pa spool kukankhira m'mwamba, kukana kwamphamvu kwa kasupe wa torsion kupita ku spool mmwamba molingana ndi mpando wa valve f3 ndi mphamvu yothamanga pakati pa gawo lolimbitsa thupi ndi gawo lokhazikika ( nthawi zambiri mphamvu yotsetsereka pakati pa pisitoni ndi chipinda cha pisitoni) fm sum, yomwe ndi: Chipata chachikulu chachitetezo chimatha kuyendetsedwa pokhapokha f1> f2 f3 fm. Pochita, kukanidwa kwakukulu kwa chitseko chachitetezo kungakhale kogwirizana ndi zinthu zitatu zotsatirazi: Chimodzi ndi zigawo zamasewera olimbitsa thupi a valve valve zimakakamira. Izi zitha kukhala chifukwa cha kuyika kopanda nzeru, kulowetsedwa kwa dothi ndi zotsalira kapena kukokoloka kwa magawo; Kusalala kwa chipinda cha pisitoni ndikosauka, kuwonongeka kwapamtunda, ma grooves ndi zofooka zina zomwe zimayambitsidwa ndi njere zolimba. Mwanjira imeneyi, mphamvu yotsetsereka yotsetsereka pakati pa gawo lolimba ndi gawo lokhazikika komanso loyima lidzakulitsidwa. Poganizira kuti zofunikira zina zimakhalabe zosasinthika, f1 Mwachitsanzo, mu No. 3 kukonza ng'anjo pamaso pa kutentha kwakukulu chitetezo chitseko kuthamanga kulemera mayeso, chachikulu chitetezo chitseko anakana kusuntha. Poyang'anitsitsa kugwa panthawi yokonza, zidadziwika kuti panali dzimbiri ndi zotsalira zambiri m'chipinda cha pisitoni, ndipo pisitoni sinathe kuchita masewera olimbitsa thupi m'chipinda cha pisitoni, zomwe zinachititsa kuti chitseko chachikulu cha chitetezo chikane kusuntha. Pokonza, pisitoni, mphete yowonjezera ndi chipinda cha pisitoni amathandizidwa ndi kupewa dzimbiri, ndipo zofooka za chipinda cha pistoni zimakhala pansi. Asanakhazikitsidwe, khoma lamkati la chipinda cha pisitoni limakutidwa mofanana ndi ufa wotsogolera, ndipo thupi la valve limasonkhanitsidwa mwadongosolo. Poyesa kutentha kwa ng'anjo yamoto, chubu limodzi la pulse limatsukidwa, ndiyeno chitseko chachikulu cha chitetezo chimagwirizanitsidwa ndi valavu yotetezera chitetezo, ndipo valavu yotetezera kuyesedwa kwa kulemera ikuchitika kachiwiri pamene ng'anjo ikukonzedwa. Zonse nzabwinobwino. Chachiwiri, chachikulu chitetezo chitseko pisitoni chipinda kutayikira ndi lalikulu. Pamene mpweya wotuluka pachipinda cha pisitoni cha valve ndi chachikulu kwambiri, mphamvu yolumikizirana ya f1 mu Fomula (1) yogwira pisitoni imakhala yaying'ono. Poganizira kuti zofunikira zina zimakhalabe zosasinthika, f1 Chifukwa chofunikira chomwe chimatsogolera kutayikira kwakukulu muchipinda cha pisitoni chikugwirizana ndi kusindikizidwa kwa valve yachipata palokha ndipo mphete ya pistoni sigwirizana ndi zomwe zanenedwa kapena mphete ya pistoni yawonongeka kwambiri kuti ikwaniritse zofunikira zosindikiza. Mwachitsanzo, 3 ~ 9 ng'anjo yamoto valavu yayikulu yotetezera pisitoni yamtengo wapatali zofunika pakona ya mphete ya pistoni iyenera kuzunguliridwa, kusiyana kwa boma sikuyenera kupitirira 14, pambuyo pa msonkhano pakamwa kusiyana △ = 1 ~ 1.25, pistoni ndi chipinda cha pisitoni B = 0.12 ~ 0.18, mphete ya pisitoni ndi gap lachipinda cha pisitoni S=0.08 ~ 0.12, mphete ya pisitoni ndi kulumikizirana kwa chipinda cha pisitoni, Kutumiza kowala sikuyenera kupitirira 1/6 m'mimba mwake. Pazofunikira zoyambira mchipinda cha pisitoni, kuya kwakuya kwa chitoliro m'chipinda cha pisitoni sikuyenera kupitilira 0.08 ~ 0.1mm, ovality yake siyenera kupitilira 0.1mm, digiri ya cone siyenera kupitilira 0.1mm, ndipo idzakhala yosalala. ndi zosavomerezeka. Komabe, poyang'anira kukonza kugwa, zimadziwika kuti mphete ya pisitoni, pisitoni ndi chipinda cha pistoni pa khomo lililonse lalikulu lachitetezo cha ng'anjo sizigwirizana ndi malamulo osamalira. Pakadali pano, chilolezo pakati pa mphete ya pisitoni ndi chipinda cha pisitoni nthawi zambiri chimakhala S≥0.20, ndipo kuchepa kwa chipinda cha pisitoni ndikovuta kwambiri, komwe kumakhudza kwambiri kulimba kwa gawo la pisitoni, zomwe zimapangitsa kuti chipinda cha pisitoni chiwombeke pang'ono. Zofooka zotere zimatha kuthetsedwa ndi: Kuthetsa malo amkati a chipinda cha pisitoni, m'malo mwa mphete ya pistoni ndi pisitoni zomwe zimakwaniritsa zofunikira, sinthani gawo lotsegulira la valve yothandizira mu dongosolo lachitetezo chachitetezo cha valavu yothandizira, onjezerani kuchuluka kwake. ya nthunzi mu gawo lalikulu lachitetezo chachitetezo cha pisitoni, pansi pa chilolezo, imathanso kuonjezera kuchuluka kwa nthunzi muchipinda chachikulu chachitetezo cha pisitoni pokweza kugunda kwa valavu yachitetezo chachitetezo kuti ilimbikitse malo a valavu yayikulu yachitetezo. Chachitatu, kuphatikizika kwa valavu yaikulu yotetezera chitetezo ndi valavu yotetezera chitetezo sikumveka bwino, ndipo kutuluka kwa nthunzi ya valavu yotetezera chitetezo kumakhala kochepa kwambiri. Kuzungulira kwadzina kwa valavu yachitetezo chachitetezo ndi yaying'ono kwambiri, zomwe zimapangitsa kuchepa kwa nthunzi yomwe imayikidwa mu pisitoni ya valavu yayikulu yachitetezo, komanso mphamvu yosakwanira f1 kulimbikitsa kutsika kwa pisitoni, ndiko kuti, f1 Izi nthawi zambiri zimakhala pamene valavu yaikulu yotetezera chitetezo cha valve imakhala ndi m'malo, chifukwa sichiganiziridwa bwino komanso chifukwa. Mwachitsanzo, pamene ng'anjo ya 5 ikukonzedwa, ma valve awiri otetezera nyundo olemera amasinthidwa ndi ma valve awiri a chitetezo cha A49H-P54100VDg20 opangidwa ndi Harbin Valve Factory. Vavu yachitetezoyi nthawi zambiri imagwiritsidwa ntchito ndi A42H-P54100VDg125 masika amtundu waukulu wachitetezo. Ikani ndi Su kupanga Dg150 × 90 × 250 mtundu wakale valavu chitetezo chachikulu ntchito, mtundu uwu wa valavu chachikulu chitetezo ndi A29H-P54100VDg125 mtundu masika mtundu valavu yaikulu chitetezo ndi yaikulu kuposa awiri mwadzina ndipo zothina ndi ofooka, mu No. 5 ng'anjo yamoto. zodzaza state security valve weight end, tsatirani chitsogozo chotsogolera ku kukanidwa kwakukulu kwa ma valve. Potsirizira pake, tidzagwetsa valavu yotetezera chitetezo, chiwongolero chowongolera ndi spool zimagwirizana ndi gawo lina la kufalikira kwa kusiyana, kuti tipititse patsogolo malo ake onyamulira panopa, yendetsaninso kuyesera kopambana. Chifukwa chake valavu yachitetezo chachitetezo komanso cholumikizira chachikulu chachitetezo sichoyenera, chiŵerengero cham'mimba mwake mwadzina chidzapangitsa kukanidwa kwakukulu kwa valavu. 2.4, chivundikiro chachitetezo chachitetezo cham'mbuyo Shu main valve kuchedwa nthawi yakumbuyo mpando nthawi yayitali kwambiri Zifukwa zazikulu za zolakwika zofalazi ndi izi: Kumbali imodzi, kukula kwa pisitoni gawo la valavu yayikulu yachitetezo, ngakhale Mpando wakumbuyo wachitetezo cha valve, koma palinso kuthamanga kwa nthunzi mu payipi ndi chipinda cha pisitoni akadali okwera kwambiri, kulimbikitsa pisitoni pansi mphamvu ikadali yayikulu kwambiri, choncho tsogolerani kumpando waukulu wakumbuyo wachitetezo pang'onopang'ono, kulephera kotereku. kuposa A42Y-P5413.7VDg100 valavu chitetezo, Chifukwa cha mtundu wa chitetezo valavu pisitoni chipinda chisindikizo chabwino. Njira yochotsera kulephera kwamtunduwu makamaka ndikukulitsa kuchuluka kwa valavu yotsegulira ndikuwonjezera kuchuluka kwa valavu kuti athetse, kutsegulira kwa valavu yopumira ndi kuchuluka kwa valavu ya throttle kumawonjezera kusiya nthunzi mu chubu cha monopulser mwachangu. kuthamangitsidwa, kuti achepetse kuthamanga kwa ntchito mu pisitoni, kuti pisitoni igwiritsidwe ntchito kuti pisitoni isunthire pansi mphamvu yoyendetsa idachepetsedwa, The valve spool pakutolera zinthu za nthunzi mu bokosi lopopera kuti ayendetse mphamvu yoyendetsa ndi chachikulu valavu chitetezo palokha torsion kasupe kuyendetsa mchikakamizo cha mavuto mwamsanga kubwerera ku mpando. Kumbali ina, chifukwa kukangana pakati pa zigawo zosuntha za valavu yaikulu ya chitetezo ndi zigawo zokhazikika ndizokulu kwambiri, valavu yaikulu yachitetezo idzatsogoleranso pampando wodekha, kuthana ndi vuto la mtundu uwu ndilo masewera olimbitsa thupi otetezeka a valve. zigawo ndi magawo osasunthika a gulu lowongolera gap la msonkhano mkati mwazomwe zimafotokozedwa.