Umthelela we-pneumatic valve positioner pneumatici-valveivale izizathu eziyinhloko nezisombululo
I-valve positioner (ebuye ibizwe ngokuthi: I-pneumatic valve positioner) iyingxenye ebalulekile yokulungisa i-valve, evame ukusetshenziswa ne-pneumatic self-actuating valve, iqhutshwa isignali ephumayo yesilawuli, kanye nesignali yayo ephumayo ukuze ilawule i-self-actuating valve. I-valve yokulawula esebenzayo, lapho indawo yokulawula i-valve, i-stem offset nayo ibuyiselwa endaweni yokubeka i-valve ngomshini we-elekthronikhi, indawo ye-Valve ithunyelwa ku-software yesistimu esesiteji ngokwesiginali kagesi.
I-valve positioner (ebuye ibizwe ngokuthi: I-pneumatic valve positioner) iyingxenye ebalulekile yokulungisa i-valve, evame ukusetshenziswa ne-pneumatic self-actuating valve, iqhutshwa isignali ephumayo yesilawuli, kanye nesignali yayo ephumayo ukuze ilawule i-self-actuating valve. I-valve yokulawula esebenzayo, lapho indawo yokulawula i-valve, i-stem offset nayo ibuyiselwa endaweni yokubeka i-valve ngomshini we-elekthronikhi, indawo ye-Valve ithunyelwa ku-software yesistimu esesiteji ngokwesiginali kagesi. Isakhiwo se-valve positioner: I-valve positioner ngokusho kwesakhiwo kanye nomgomo ingahlukaniswa ibe indawo ye-valve yomoya, i-valve-gas positioner positioner ehlakaniphile. I-valve positioner inganweba amandla okukhipha i-valve yokulungisa, inciphise isiginali yokuhambisa isignali yokulungisa, isheshise isivinini se-stem, ithuthukise i-valve eqondile, isuse amandla okungqubuzana kwe-stem futhi isuse ithonya lamandla angalingani, iqinisekise ngokugcwele ukuma okulungile nokunembile. we-valve yokulungisa. I-valve positioner uhlobo oluhambisanayo oluvamile lwe-actuator pneumatic actuator, i-actuator kagesi, ukuhlelwa kwe-stroke okuqondile, umehluko wokuhlelwa kwe-Engle stroke.
Isetshenziselwa othomathikhi, uhlobo lwemanyuwali luvule futhi luvale zonke izinhlobo zamavalvu, amafeni, njll. Isihleli se-valve siyingxenye ebalulekile yevalvu elawula ingcindezi. Isignali ye-valve stem offset ithathwa njengempendulo yokufaka isignali yokulinganisa enembile, futhi isignali yokuphumayo yebhodi lokulawula ithathwa njengesignali yokuqhathanisa yokuqhathanisa. Uma kokubili kuhlukene, isignali yokuphumayo ku-actuator iyashintshwa ukuze yenze indawo ye-actuator, futhi ukuxhumana okukodwa kuya koyedwa phakathi kwezikhathi ze-valve stem offset kanye nesignali yokuphuma kwebhodi lokulawula iyasethwa.
Ngakho-ke, i-valve positioner yakha isistimu yokulawula impendulo ene-stem offset njengesignali yokulinganisa enembile kanye nokuphumayo kwebhodi lokulawula njengesignali yokusetha. I-variable variable yesistimu yokulawula iyisiginali yokuphuma kwesimo se-valve ku-actuator. Ukhiye wokumisa i-valve esignali uhlukaniswe waba indawo yokubeka i-valve yomoya kanye ne-valve yemishini kagesi yokubeka indawo. Isignali yokufaka ye-pneumatic valve positioner iyisignali evamile yegesi, isibonelo, isignali yegesi engu-20~100kPa, isignali yayo yokuphumayo iphinde ibe isignali yegesi evamile. Isignali yokufaka ye-valve yendawo kagesi ukugeleza kukagesi okujwayelekile noma isignali ye-voltage esebenzayo, njengesignali yokugeleza kagesi engu-4~20mA noma isignali ye-voltage esebenzayo engu-1~5V, isakhiwo sangaphakathi se-valve ye-valve izoguqulwa ibe amandla kazibuthe, bese kuba igesi ephumayo. isignali ku-valve elawula ukucindezela kwe-rotary. Ngokusho isiqondiso isikhundla zingahlukaniswa single valve positioner kanye double valve positioner.
Unilateral valve positioner nge piston machine actuator, valve positioner indawo eyodwa kuphela edlala indima, double valve positioner isebenza nhlangothi zombili zesilinda somshini wepiston actuator, idlala indima emizileni emibili. Ngokusho kokuphumayo kwesimo se-valve kanye nenani lenzuzo yesiginali yokufaka ephawulwe kusimo se-valve somphumela omuhle kanye nesihleli sevalvu yokusabela.
Uma isignali yokufaka ye-positive-effect valve positioner iphakanyiswa, isignali yokuphumayo nayo iyakhuphuka, ukuze inani lenzuzo libe liphozithivu.
Uma isignali yokufaka ye-reaction valve positioner iphakanyiswa, isignali yokuphumayo iyancishiswa futhi inani lenzuzo liyigegethi. Ngokwesiginali yokufaka i-valve positioner iyisignali yokulingisa noma isignali yedatha, ingahlukaniswa ibe isibonisi sevalvu evamile kanye nesixhumi esibonakalayo sekhompyutha semishini kagesi yokubeka i-valve.
Isignali yohlobo lwevalvu evamile ilingisa ingcindezi evamile noma ukugeleza kukagesi, isignali ye-voltage esebenzayo, isixhumi esibonakalayo sekhompuyutha isibonisi somshini wevalvu yokubeka indawo isignali yohlobo lwesixhumi esibonakalayo sekhompyutha. Ngokusho kwe-valve positioner ayikho nge-CPU ingahlukaniswa ibe isihleli se-valve esivamile semishini kagesi kanye nesihleli sevalvu kagesi ehlakaniphile.
I-valve yendawo kagesi evamile ayinayo i-CPU, ngakho-ke, ayinakho ubuhlakani, ayikwazi ukuxazulula ukubala okuhlakaniphile okufanelekile. I-valve positioner ehlakaniphile nge-CPU, ingakwazi ukuxazulula ukubala okuhlobene okuhlakaniphile, njengesinxephezelo sesistimu yesidoda sesilinganiso somsebenzi wesidoda, isixhumi esibonakalayo sekhompyutha se-valve indawo kagesi singathatha i-PID namanye amamojula ohlelo, siqedele ukubala okuhambisanayo. I-valve ye-pneumatic ivale izizathu eziyinhloko nezisombululo kuqala, ake sihlaziye i-valve ye-pneumatic valve esebenza ngokwayo eyenza i-valve ibe nenani elithile lokuvuza, ukuze sibone ukuthi ukuvuza kwe-valve kungaphezulu kwe-value evamile, ngale kuyinkinga yekhwalithi yomkhiqizo. Okwesibili, ukuphuma kwesiguquli sikagesi akumataniswa nengcindezi yokusebenza kwekhanda lefilimu ye-valve. Ukuthi i-valve ibhajwe obhuqwini.
I-valve okokuqala, ake sihlaziye i-valve ye-pneumatic valve ezisebenza yona eyenza ukuthi umnyango ube nenani elithile lokuvuza, ukuze sibone ukuthi ukuvuza kwevalvu kungaphezulu kwenani elijwayelekile, ngale kwenkinga yekhwalithi yomkhiqizo. Okwesibili, ukuphuma kwesiguquli sikagesi akumataniswa nengcindezi yokusebenza kwekhanda lefilimu ye-valve. Ukuthi i-valve ibhajwe obhuqwini.
I-valve spring force ayilingani kahle. Ukuthi isiqu sibhajwe yini.
I-valve core, i-high pressure gate valve valve partial wear film head valve disc ukuvuza umusi.
Amaphutha edivayisi yokumisa ajwayelekile.
I-valve yokuvula umoya, i-zero torsion spring axial force inkulu kakhulu. Isiqu sifushane kakhulu.
Lungisa i-valve ngaphambi nangemva kokuhlukana kwengcindezi kukhulu kakhulu, iyini inkinga yokukhetha imodeli.
Ukuthi amandla okukhipha i-actuator mancane kakhulu, ingcindezi enkulu esebenzayo esebenzayo eshintshayo (PF yokwandisa amandla okukhiphayo, i-valve yokuvala igesi, ukuzungezisa kwesokunxele kwengxenye yokulungisa (okuxekethile), okungukuthi, i-PO~PL shift, kodwa idinga ukunaka ukuguqulwa kokuhlelwa kwe-stroke okugcwele No.
Singaqale sithole isizathu futhi sisebenzise isixazululo esitatimendeni esingenhla. Uma une-valve ye-pneumatic manual, ngakho-ke ngaso sonke isikhathi lapho imisiwe, vumela wonke umuntu ajike afe, kodwa futhi vumela izisebenzi zedeshibhodi, zilinganise futhi, ukulinganisa i-zero kanye nokuma kwensimbi futhi; Kunezizathu eziningi zokuthi kungani ilungiselelo lokuhamba lendawo yokuvala lingekho, isiqu se-valve siguga ngokwengxenye, futhi ukucindezela kwegesi okucindezelwe kusezingeni elijwayelekile. Okokuqala, setha inani le-valve positioner, bese ulungisa ilungiselelo lokuhamba lesimo sokuvala; Amavalvu angamavavu omoya - avulekile noma anomoya - avale. Uma i-valve yegesi, ingabona ingcindezi yokusebenza kwe-valve yomoya, ithuluzi lokubeka i-zero uhla lokulinganisa ukulungiswa akunankinga, ngaphezu kwalokho, ayikho i-valve yekhadi. Uma kuyi-valve evulekile yegesi, i-valve ye-pneumatic iphukile, i-valve kufanele ivalwe. Uma ingavaliwe, kungenzeka ukuthi ipuleti yesifunda samafutha we-valve ayinazo izinto ezingcolile ezinamathele; Uma i-valve ivaliwe ngephutha, kuhlongozwa ukubuza ukuthi ukucindezela kwepaneli yensimbi kwanele, okungukuthi, ukuthi ukukhishwa kwengcindezi yendawo yendawo kungalungisa ukucindezela kokusebenza kwe-valve evaliwe; Bheka ukucindezela kokusebenza kwe-valve ye-pneumatic akwanele, bese ubheka i-valve ukuthi kukhona isimo sekhadi, noma ukuvuza, nakho kuvaliwe.
Idivayisi efanelekile yokubeka isitayela sokuqala; I-valve yomoya: 1, amandla e-axial entwasahlobo ayanele, angandiswa ngokufanele. I-2, isimo sokusebenza sivumela, i-valve kufanele isuswe ukuze wenze ukuhlolwa kokucindezela, thatha leli thuba ukuhlola isimo sokuvala i-valve core ye-valve yesango lokucindezela okukhulu, nokuthi ingabe kukhona umonakalo kumgogodla we-valve kanye ne-valve yesango lomfutho ophezulu.
3. Uma icala lokungaphinde livaleke senzeka, i-valve ingasikwa ukuze kubhekwe ukuthi zikhona yini izinto ezingcolile ku-valve yesango lomfutho ophezulu wenhliziyo ye-valve. 4. 1. Amandla e-axial entwasahlobo makhulu kakhulu, angancishiswa ngokufanelekile. 2.
3, uma isimo siphinde sibonakala siseduze singafile, singasika i-valve, hlola ukuthi kukhona yini izinto ezingcolile ku-valve yenhliziyo ye-high pressure gate valve 4, hlola i-valve ye-pneumatic valve yokusebenza ingcindezi ayilungile 5, hlola ukuthi kukhona umonakalo ku-valve disc 6, hlola ukuthi iphoyinti le-zero le-valve liphakeme yini uma umsebenzi wenziwa ngemuva kokwenzeka kokuvalwa okungakafi, Kuhlongozwa ukuhlola imingcele eyinhloko ye-valve ukuze ubone ukuthi ukhona yini umehluko phakathi ngokwezifiso imingcele eyinhloko kanye nesimo sangempela sokusebenza.
Isikhathi sokuthumela: Mar-01-2023
