Ulwakhiwo lwevalvu yombane kunye neenkcukacha zofakelo lwevalvu yombane kunye nezibonelelo zevalve yepneumatic kunye nokungalunganga kokuthelekisa

Ulwakhiwo lwevalve yombane kunye neenkcukacha zofakelo lwevalve yombane kunye neenzuzo zevalve yepneumatic kunye nokungalunganga xa kuthelekiswa Ivalve yombane yentshukumo yepitch inkulu kunevalufa eqhelekileyo, isantya sokutshintsha ivalve yombane inokulungiswa, ubume obulula, kulula ukuyigcina, inkqubo yesenzo kuba iimpawu ze-buffer yegesi ngokwayo, akulula ukuba yonakaliswe yi-jamming, kodwa kufuneka ibe nomthombo womoya, kwaye inkqubo yayo yokulawula inzima kakhulu kunevalve yombane. Olu hlobo lwevalve kufuneka lufakwe ngokubanzi ngokuthe tye kumbhobho. Ivalve yombane idla ngokuba ne-actuator yombane kunye nevalve. Ivalve yombane isebenzisa amandla ombane njengamandla okuqhuba ivalve kwi actuator yombane ukuqaphela isenzo sokutshintsha ivalve. Ukuze kufezekiswe injongo yokutshintsha umbhobho ophakathi. Ngoko ke, ziziphi iinkcukacha esifanele sinikele ingqalelo kuzo kwinkqubo yokufakela i-valve yombane? Isixhobo sevalvu yombane sisixhobo esiyimfuneko ukuze siqonde ulawulo lwenkqubo yevalvu, ulawulo oluzenzekelayo kunye nolawulo olukude. Inkqubo yayo yokunyakaza inokulawulwa ngokubetha, i-torque okanye ubungakanani be-axial thrust. Ngenxa yokuba iimpawu zokusebenza kunye nesantya sokusetyenziswa kwesixhobo sevalve yombane sixhomekeke kuhlobo lwevalve, ukucaciswa kokusebenza kwesixhobo kunye nendawo yevalve kumbhobho okanye izixhobo, ke ngoko, ukhetho oluchanekileyo lwesixhobo sevalve yombane lubalulekile ukuba thintela umcimbi wokulayisha ngaphezulu (i-torque esebenzayo iphezulu kunetorque yokulawula). Ngokuqhelekileyo, ukhetho oluchanekileyo lwesixhobo se-valve yombane ngokusekelwe koku kulandelayo: I-torque yokusebenza I-torque yokusebenza iyona parameter ephambili yokukhetha isixhobo sevalve yombane. I-torque yemveliso yesixhobo sombane kufuneka ibe yi-1.2 ~ 1.5 amaxesha e-torque ye-valve yokusebenza i-tripod. Kukho ulwakhiwo ezibini eziphambili zesixhobo sevalve yombane: enye ayiqwalaselwanga ngediski yokutyhala, itorque ephuma ngokuthe ngqo; Olunye luqwalaselo lwe-disc ye-thrust, i-torque ye-output nge-thrust disc stem nut kwi-output thrust. Inani lamakhonkco aqengqelekayo eshafti ephumayo yesixhobo sevalve yombane inxulumene nedayamitha yegama lesiqu sevalve kunye nenani lemisonto. Kufuneka ibalwe ngokwe-M=H/ZS (M linani lilonke lezangqa eziqengqelekayo ekufuneka isixhobo sombane saneliswe ngazo, H bubude obuvulayo bevalve, S yipitch yevalve stem drive thread kunye noZ. linani lomsonto wesikhondo sevalve). Idayamitha yesiqu se-multi-turn open-rod valves, ukuba i-stem enkulu ye-diameter evunyelwene ngesixhobo sombane ayinakudlula kwi-valve yesikhondo, ayinakudityaniswa kwivalve yombane. Ngoko ke, i-diameter yangaphakathi ye-hollow output shaft yesixhobo sombane kufuneka ibe mkhulu kunobubanzi bangaphandle besiqu sevalve yentonga evulekileyo. Kwiivalvu zentonga emnyama kwisebe leevalve ezijikelezayo kunye neevalve ezininzi ezijikelezayo, nangona kungafuneki ukuba kuqwalaselwe ububanzi besiqu sevalve, ububanzi besiqu sevalve kunye nobungakanani bendlela ephambili kufuneka kwakhona kuqwalaselwe ngokupheleleyo. ukhetho, ukuze indibano isebenze ngokuqhelekileyo. Ukuba isantya sokuvula kunye nokuvala i-valve yesantya sokuphuma sikhawuleza kakhulu, kulula ukuvelisa i-percussion phenomenon yamanzi. Ngoko ke, isantya esifanelekileyo sokuvula kunye nokuvala kufuneka sikhethwe ngokwemiqathango eyahlukeneyo yokusetyenziswa. Ukuthelekiswa koncedo kunye nokungalunganga kwevalve yombane kunye nevalve ye-pneumatic Izitshizi zombane zeValve zisetyenziswa ikakhulu kwizityalo zamandla enyukliya, njengoko iinkqubo zamanzi ezinoxinzelelo oluphezulu zifuna inkqubo egudileyo, engenasiphithiphithi necothayo. Iinzuzo eziphambili ze-actuator yombane kukuba ubude abukho bumdaka kwaye umsebenzisi unokufaka isicelo esiqhubekayo. I-thrust eveliswa yi-actuator enkulu ingaba phezulu ukuya kuma-225000kgf. I-activator ye-hydraulic kuphela inokufezekisa i-thrust enkulu, kodwa iindleko ze-hydraulic actuator ziphezulu kakhulu kunezo ze-actuator zombane. Ikhono lokuchasa ukutenxa kwe-activator yombane lihle kakhulu, kwaye i-output thrust okanye i-torque iyinto eqhubekayo, enokuthi iphumelele amandla angalinganiyo aphakathi kwaye ifezekise ulawulo oluchanekileyo lweeparamitha zenkqubo. Ngoko ke, ukuchaneka kokulawula kuphezulu kunoko kwe-actuator ye-pneumatic. Ukuba i-servo amplifier isetyenzisiweyo, imiphumo emihle kunye nembi iyakwazi ukutshintshiselwa ngokulula, kwaye indawo yesimo se-valve yesignali yekhefu inokusetwa lula (gcina / uvule ngokupheleleyo / uvalwe ngokupheleleyo). Xa iphutha lenzeka, kufuneka lihlale kwindawo yokuqala, engenakwenzeka kwi-activator pneumatic. I-actuator ye-pneumatic kufuneka isebenzise isethi yenkqubo yokukhusela edibeneyo ukuqonda ukugcinwa kwendawo. Izinto ezingalunganga eziphambili ze-activator yombane zezi: Isakhiwo sinzima ngakumbi, sithande ukusilela, kwaye ngenxa yobunzima bayo, iimfuno zobuchwepheshe zabasebenzi bokugcinwa kwendawo ziphezulu kakhulu; Ukusebenza kweemoto ukuvelisa ubushushu, ukuba ulungelelwaniso luhlala lukhona, lubangela lula ukufudumala kwemoto, ukukhuselwa kwe-thermal, kodwa kwandise ukunxiba kwegiya yokunciphisa; Ukongeza, umsebenzi uyacotha. Kuthatha ixesha elide ukuvelisa umqondiso ukusuka kumlawuli ukuya kwindawo ehambelanayo ekuphenduleni umlawuli. Yiyo loo nto ingekho kakuhle njenge-pneumatic kunye ne-hydraulic actuators. Ivalve esebenza ngomoya I-actuator kunye nendlela yokulawula yevalve ye-pneumatic actuator ziyafana zonke, kwaye i-actuator ineendidi ezimbini: uhlobo lwefilimu kunye nohlobo lwepiston. I-piston stroke inde, ifanelekile kwithuba lokufuna i-thrust enkulu; Ukubetha kwefilimu kuncinci, kunokuqhuba ngokuthe ngqo isiqu. Ngenxa yokuba i-actuator ye-pneumatic ineenzuzo zesakhiwo esilula, i-output thrust enkulu, isenzo esizinzile nesithembekileyo, kunye nokhuseleko kunye nobungqina bokuqhuma, inesicelo esifanelekileyo kwinkqubo yokuvelisa isityalo samandla, imboni yeekhemikhali, ukucocwa kweoli kunye nezinye iimfuno zokhuseleko. Iinzuzo eziphambili ze-actuator ye-pneumatic: Yamkela isignali yegesi eqhubekayo, ukuphuma kwe-linear displacement (emva kokongeza isixhobo sokuguqula umbane / igesi, inokwamkela umqondiso oqhubekayo wombane), ezinye zixhotyiswe ngengalo ye-rocker, zinokukhupha i-angular displacement. Inomsebenzi olungileyo kunye nombi. Isantya sokuhamba siphezulu kodwa sinciphisa njengoko umthwalo ukhula. Amandla emveliso anxulumene noxinzelelo lokusebenza. Ukuthembeka okuphezulu, kodwa i-valve ayikwazi ukugcinwa emva kokuba ukunikezelwa komoya kuphazamisekile (inokugcinwa emva kokongeza i-valve yokugcina). Ukungalungi ukufikelela kulawulo lwecandelwana kunye nolawulo lwenkqubo. Ukuhlolwa nokugcinwa kulula, ukuziqhelanisa kakuhle nokusingqongileyo. Amandla emveliso makhulu. Ngomsebenzi wobungqina bokudubula.