Magetsi ndi pneumatic actuatorskwa ma valve a mapaipi: Zikuwoneka kuti mitundu iwiri ya actuators ndi yosiyana kwambiri, ndipo kusankha kuyenera kupangidwa molingana ndi gwero lamagetsi lomwe likupezeka pa malo oyikapo.Koma kwenikweni maganizo amenewa ndi okondera.Kuphatikiza pa kusiyana kwakukulu ndi koonekeratu, amakhalanso ndi zinthu zingapo zosadziwika bwino.

Magetsi ndi pneumatic actuators ndi njira ziwiri zomwe zimagwiritsidwa ntchito kwambiri pamakina opangira makina.Nthawi zambiri, chisankho chosankhidwa cha actuator chimapangidwa mu gawo loyambira la mapangidwe, ndipo chidzagwiritsidwa ntchito mpaka kumapeto kwa moyo pambuyo pokhazikitsa.

Posankha mtundu wamagetsi a actuator, anthu nthawi zambiri samaganizira magawo a sing'anga mu payipi, koma amangoyang'ana zida zamkati za wopanga, momwe magetsi amagwirira ntchito, kapena ngati malowa angapereke zambiri. kuchuluka kwa gasi wopangidwa kale.

Komabe, pogwira ntchito, nthawi zambiri zimapezeka kuti ma valve ena amafunika kukhala ndi ma actuators, kapena magawo a sing'anga muzitsulo zina zidzasintha.Funso limabuka: Kodi ndisunge choyatsira choyambirira kapena kuyisintha ndi choyatsira china kuti ndigwire bwino ntchito?

Moyo wautali wautumiki

Nkhaniyi ifotokoza ndikufanizira mawonekedwe akuluakulu amagetsi ndi ma pneumatic actuators.

Nthawi zonse, opanga azitsimikizira ma 10,000 opangira ma actuators amagetsi ndi ma 100,000 opangira ma pneumatic actuators.Mwachiwonekere, ponena za kuchuluka kwa kayendetsedwe ka ntchito, makina oyendetsa pneumatic amakhala ndi moyo wautali chifukwa cha mawonekedwe ake osavuta.Kuphatikiza apo, kugundana kwapamtunda kwa pneumatic actuator kumapangidwa ndi elastomer kapena polima, ndipo mphete za O ndi zowongolera zamapulasitiki ndizosavuta kusintha.

Monga choyatsira magetsi, nthawi zambiri pamakhala bokosi la gear lochepetsera kuchokera pagalimoto kupita ku shaft yotulutsa.Pali magiya ambiri omwe amalumikizana wina ndi mzake, omwe amatha kugwira ntchito.Ndikoyeneranso kudziwa kuti palibe chifukwa chosinthira mafuta opaka mafuta panthawi yonse ya moyo wa pneumatic actuator.

Torque

Chimodzi mwazinthu zofunika kwambiri pakugwira ntchito kwa ma valve actuators ndi torque.Makokedwe a actuator yamagetsi amatengera kapangidwe kake (gawo lokhazikika) ndi voteji yomwe imagwiritsidwa ntchito pa stator.Makokedwe a pneumatic actuator amatengera kapangidwe kake (gawo lokhazikika) komanso kukakamiza kwa mpweya woperekedwa kwa woyendetsa pneumatic.

Nthawi zambiri, torque ya actuator iyenera kukhala yayikulu kuposa torque yayikulu ya valavu, kapena yokulirapo kuposa torque yofunika kusuntha chinthu chotseka.Pakugwiritsa ntchito kwenikweni, torque yeniyeni ya valavu ikhoza kukhala yayikulu kuposa torque yayikulu yomwe imanenedwa ndi chizindikiro cha wopanga, komanso wamkulu kuposa torque yayikulu ya actuator.Izi mosakayikira ndi zadzidzidzi.

Ngati mupitiliza kuyendetsa actuator, zitha kuwononga makinawo ndi valavu.Ngati torque ya valavu ikuwonjezeka, injiniyo imawonjezera pang'onopang'ono mpaka itafika pamtengo wotulutsa (mtengo wotulutsa).Izi zikutanthauza kuti mawonekedwe amakanika amakakamizika kutulutsa ndikupirira torque mopitilira muyeso.

Kutetezedwa kwa torque

Pofuna kuteteza zipangizo kuti zisawonongeke pansi pazimene tazitchula pamwambapa, makina opangira magetsi amatha kukhala ndi zipangizo zina zapadera.Chodziwika kwambiri ndi chosinthira ma torque, chomwe chimatha kukhala chamakina (mfundo yodziwika bwino ndikuti giya ya nyongolotsi imayenda mozungulira molingana ndi kuchuluka kwa torque);itha kukhalanso yamagetsi (mfundo yodziwika bwino ndikuyesa stator pano, kapena zotsatira za Hall.).Torque ikadutsa mtengo wokwanira wopangidwa, chosinthira ma torque chimatha kudula ma voliyumu a stator ndikuyimitsa injini yamagetsi.Palibe chifukwa choteteza torque mopitilira muyeso mu ma pneumatic actuators.Ngati torque yomwe imagwiritsidwa ntchito pa valavu ipitilira malire omwe atchulidwa, mawonekedwe akuthupi a mpweya woponderezedwa amapangitsa kuti pneumatic actuator asiye kuyendetsa.Mosiyana ndi ma actuators amagetsi, ma torque otulutsa a pneumatic actuators sangadutse malire apangidwe.Zitha kuganiziridwa kuti ngati valavu ya payipi ili ndi makina oyendetsa pneumatic, chiwopsezo cha kulephera kwa zida chifukwa cha torque yopitilira mtengo wotchulidwa chimachotsedwa.

Mapangidwe osaphulika

Ngati pali zinthu zoopsa m'malo ogwiritsidwa ntchito, zida zamagetsi zimatha kuyambitsa kuphulika.Ponena za milingo yachitetezo ndi njira zodzitetezera m'malo owopsa, sizikuphatikizidwa m'nkhaniyi chifukwa cha kuchepa kwa malo.

Komabe, ndikofunikira kutsindika kuti zida zoteteza kuphulika ziyenera kugwiritsidwa ntchito m'malo okhala ndi zida zowopsa.

Poyerekeza ndi makina opangira magetsi okhazikika m'mafakitale, makina opangira magetsi osaphulika a mavavu apaipi ndi okwera mtengo komanso ovuta kupanga.Ngakhale makina opangira pneumatic atagwiritsidwa ntchito pamalo owopsa, palibe chiopsezo chophulika.Kwa ma actuators a pneumatic, mapangidwe apadera a malo owopsa amakhalanso ndi malo, ma valve solenoid ndi ma switch switch (Chithunzi 1-3).Mofananamo, ngati makina oyendetsa mpweya omwe ali ndi chowonjezera chosaphulika amagwiritsidwa ntchito pogwiritsira ntchito valavu ya pipeline, mtengo wake udzakhala wotsika kwambiri kuposa wamagetsi oletsa kuphulika omwe ali ndi ntchito yomweyo.

Kuyika

Ma actuators a pneumatic ali ndi chimodzi mwazovuta kwambiri.Pamene actuator ikufika pakati pa sitiroko, kuikapo kumakhala kovuta kwambiri, zomwe zikutanthauza kuti kuyika kwa spool ya valve yolamulira kumakhala kovuta kwambiri.

Chifukwa cha mawonekedwe a mpweya, kulondola kwa malo kwa ma pneumatic actuators ndi otsika kangapo kuposa ma actuators amagetsi.Ngati cholumikizira chamagetsi chitengera cholowera, kulondola kwa malo ake ndi maulamuliro angapo a ukulu kuposa wa pneumatic actuator yokhala ndi poyikapo.Zotsirizirazi zitha kugwiritsidwa ntchito pamakina omwe safuna kulondola kwa malo apamwamba kapena kuwongolera kolondola.Ma actuators a pneumatic omwe amagwiritsidwa ntchito mu ma valve a mapaipi ali ndi mawonekedwe ake pamapangidwe apangidwe: zigawo zonse za dongosolo lowongolera zimayikidwa panja pa actuator, kapena kunja kwa kapangidwe kake.Ngati mukufuna kusintha mawonekedwe ogwiritsira ntchito kuti musamawongolere, muyenera kusintha valavu ya solenoid ndi choyikapo.Popeza kuti zigawo ziwirizi zimayikidwa kunja kwa pneumatic actuator, ndipo mapangidwe a mating ndi ofanana, ndi bwino kuchotsa wogawa ndikuyikapo malo.Mwa kuyankhula kwina, chowongolera cha pneumatic chomwe chingagwiritsidwe ntchito potseka ndi kuwongolera posintha zida zofananira (Chithunzi 1-2).