I-actuator ye-pneumatic yi-actuator esebenzisa uxinzelelo lomoya ukuqhuba ukuvula, ukuvala okanye ukulawulwa kwevalve. Ikwabizwa ngokuba yi-pneumatic actuator okanye isixhobo somoya. Ii-actuator ze-pneumatic ngamanye amaxesha zixhotyiswe ngezixhobo ezithile ezincedisayo. Ezona zisetyenziswa ngokuxhaphakileyo zizimiseli zevalvu kunye nezixhobo zamavili esandla. Umsebenzi we-valve positioner kukusebenzisa umgaqo wempendulo ukuphucula ukusebenza kwe-activator ukuze i-actuator ikwazi ukufikelela kwindawo echanekileyo ngokuhambelana nomqondiso wolawulo lomlawuli. Umsebenzi wendlela ye-handwheel kukusebenzisa ngokuthe ngqo i-valve yokulawula ukugcina imveliso eqhelekileyo xa inkqubo yokulawula ingaphumeleli ngenxa yokuphuma kwamandla, ukuphuma kwegesi, akukho mveliso yomlawuli okanye ukungaphumeleli kwe-actuator.
UmGaqo wokuSebenza we-Pneumatic Actuator
Xa umoya ocinezelweyo ungena kwi-actuator ye-pneumatic ukusuka ku-nozzle A, igesi ityhala iipiston ezimbini ukuba zihambe ngokulandelelana kuzo zombini iziphelo (i-cylinder head ends), kwaye i-rack kwi-piston iqhuba i-gear kwi-shaft ejikelezayo ukujikeleza i-90 degrees counterclockwise, kwaye ivalve ivuliwe. Ngeli xesha, igesi kwiziphelo zombini ze-actuator ye-pneumatic ikhutshwe kwi-nozzle B. Ngokuchasene noko, xa umoya ocinezelweyo ungena kwiziphelo ezimbini ze-actuator ye-pneumatic ukusuka kwi-nozzle ye-B, igesi ityhala i-piston ephindwe kabini ukuba ihambe ngomgca phakathi, kwaye i-rack kwi-piston iqhuba i-gear kwi-valve ejikelezayo, i-valve ejikelezayo ivaliwe, i-0 ivaliwe kwi-valve. Ngeli xesha, igesi ephakathi kwe-actuator ye-pneumatic ikhutshwa kwi-nozzle A. Oku ngasentla ngumgaqo wothumelo wohlobo oluqhelekileyo. Ngokweemfuno zomsebenzisi, i-actuator ye-pneumatic inokufakwa kunye nomgaqo wokuhambisa ochasene nohlobo oluqhelekileyo, oko kukuthi, i-axis ekhethiweyo ijikeleza i-clockwise ukuvula i-valve, kwaye ijikeleze ngokuphambene ne-clockwise ukuvala i-valve. I-nozzle ye-single-acting (uhlobo lokubuya kwentwasahlobo) i-pneumatic actuator yi-air inlet, kwaye umbhobho we-B ngumngxuma wokukhupha (i-B nozzle kufuneka ifakwe kunye ne-muffler). Isingenisi somlomo sivula ivalve, kwaye amandla asentwasahlobo avale ivalve xa umoya unqunyulwe.
Ukusebenza kwe-Pneumatic Actuator
1. Umlinganiselo wokukhupha amandla okanye i-torque yesixhobo se-pneumatic kufuneka ihambelane nemimiselo yamazwe ngamazwe kunye nabathengi
2. Ngaphantsi kweemeko zokungabikho komthwalo, i-cylinder ifaka igalelo kunye noxinzelelo lomoya oluchazwe kwi "Table 2", kwaye ukunyakaza kwayo kufuneka kube lula ngaphandle kwe-jamming okanye i-creeping.
3. Ngaphantsi koxinzelelo lomoya we-0.6MPa, i-torque ephumayo okanye i-thrust yesixhobo se-pneumatic kuzo zombini iindlela zokuvula kunye nokuvala ayiyi kuba ngaphantsi kwexabiso eliboniswe kwi-nameplate yesixhobo somoya, kwaye isenzo siya kuguquguquka, kwaye akukho deformation esisigxina okanye ezinye izinto ezingaqhelekanga ziya kwenzeka kuyo nayiphi na inxalenye.
4. Xa uvavanyo lokutywinwa luqhutywa ngoxinzelelo oluphezulu lokusebenza, isixa somoya ovuzayo ukusuka kwicala ngalinye loxinzelelo lwangasemva aluyi kudlula (3 + 0.15D) cm3 / min (imeko eqhelekileyo); ubungakanani bomoya ovuzayo ukusuka kwisigqubuthelo sokugqibela kunye neshaft ephumayo ayinakudlula (3+0.15d)cm3/min.
5. Uvavanyo lwamandla lwenziwa ngamaxesha angama-1.5 ubukhulu boxinzelelo olusebenzayo. Emva kokugcina uxinzelelo lovavanyo lwemizuzu ye-3, i-cylinder end cover kunye neendawo zokutywinwa ezimileyo azivumelekanga ukuba zibe nokuvuza kunye nokuguqulwa kwesakhiwo.
6. Inani lobomi bentshukumo, isixhobo somoya silinganisa isenzo sevalve ye-pneumatic. Ngaphantsi komqathango wokugcina i-torque yokuphuma okanye umthamo we-thrust kumacala omabini, inani lemisebenzi yokuvula nokuvala ayiyi kuba ngaphantsi kwamaxesha angama-50,000 (umjikelo omnye wokuvala).
7. Kwizixhobo ze-pneumatic kunye neendlela ze-buffer, xa i-piston ihambela kwindawo yokugqibela ye-stroke, impembelelo ayivumelekanga.
Izinto eziluncedo kwi-Pneumatic Actuators
1. Yamkela izibonakaliso zegesi eziqhubekayo kunye nokuphuma kwe-linear displacement (emva kokongeza isixhobo sokuguqula umbane / igesi, inokwamkela izibonakaliso zombane eziqhubekayo). Abanye banokukhupha i-angular displacement emva kokuxhotyiswa ngengalo yerocker.
2. Kukho imisebenzi eyakhayo nengalunganga.
3. Isantya esihambayo siphezulu, kodwa isantya siya kuncipha xa umthwalo ukhula.
4. Umbane wokukhupha uhambelana noxinzelelo lokusebenza.
5. Ukuthembeka okuphezulu, kodwa i-valve ayikwazi ukugcinwa emva kokuba umthombo womoya uphazamisekile (unokuthi ugcinwe emva kokongeza i-valve yokubeka indawo).
6. Kunzima ukuqaphela ulawulo olucandiweyo kunye nolawulo lweprogram.
7. Ukugcinwa okulula kunye nokuziqhelanisa kakuhle nokusingqongileyo.
8. Amandla amakhulu emveliso.
9. Inomsebenzi wokuthintela ukudubula.
Ehlotyeni
Ufakelo kunye nemilinganiselo yokudibanisa yee-actuator ze-pneumatic kunye neevalvu ziyilwe ngokwemigangatho yamazwe ngamazwe ISO5211, DIN3337 kunye ne-VDI/VDE3845, kwaye inokutshintshwa kunye ne-actuator ye-pneumatic eqhelekileyo.
Umngxuma womthombo womoya uhambelana nomgangatho we-NAMUR.
Umngxuma wokuhlanganisa i-shaft esezantsi ye-actuator ye-pneumatic (ehambelana nomgangatho we-ISO5211) isikwere esiphindwe kabini, esilungele umgca we-linear okanye i-45 ° ukufakwa kwee-valve kunye neentonga zesikwere.
Ixesha lokuposa: Feb-16-2025