[impahla eyomileyo] iplanti yombane engundoqo yogcino lwevalvu ye-DQW inxalenye ye-rotary actuator esebenzayo imiba yesivalo

[impahla eyomileyo] iplanti yombane engundoqo yogcino lwevalvu ye-DQW inxalenye ye-rotary actuator esebenzayo imiba yesivalo

Ivalve yokukhangela ivalve esetyenziselwa ukuthintela umva kwemidiya kwimibhobho kunye nezixhobo. Ivalve yokujonga umphunga isetelwe kumbhobho ngamnye wokukhupha wesifudumezili sangaphandle kwinkqubo yokubuyisela umphunga wesethi yeinjini yomphunga. Umsebenzi wayo kukuvala ipleyiti yevalve ngokuzenzekelayo xa iyunithi ilahla umthwalo, ukuze kuthintelwe umphunga kwicala lomphunga wesixhobo sokufudumeza kunye nombhobho wokungenisa umphunga ekubeni ubuyele umva kwi-injini yomphunga kwaye ubangele ukuba i-injini yomphunga ibaleke kakhulu ukunqanda. iingozi.
Ukugcinwa kweevalvu eziphambili
1. Ivalve yokujonga ukutsalwa
Ivalve yokukhangela ivalve esetyenziselwa ukuthintela umva kwemidiya kwimibhobho kunye nezixhobo. Ivalve yokujonga umphunga isetelwe kumbhobho ngamnye wokukhupha wesifudumezili sangaphandle kwinkqubo yokubuyisela umphunga wesethi yeinjini yomphunga. Umsebenzi wayo kukuvala ipleyiti yevalve ngokuzenzekelayo xa iyunithi ilahla umthwalo, ukuze kuthintelwe umphunga kwicala lomphunga wesixhobo sokufudumeza kunye nombhobho wokungenisa umphunga ekubeni ubuyele umva kwi-injini yomphunga kwaye ubangele ukuba i-injini yomphunga ibaleke kakhulu ukunqanda. iingozi.
Ivalve yokuhlola i-exhaust yeyunithi ye-300MW ephuma kumazwe angaphandle yi-valve yokukhangela i-swing elawulwa ngumoya, isakhiwo siboniswe kumzobo, kunye nesakhiwo sesihlalo sokulawula esilawulwa ngumoya siboniswe kumzobo. Ubukhulu becala yenziwe ngumzimba wevalvu, ipleyiti yevalvu, ishaft, umkhono njalo njalo. Isihlalo sokulawula umoya senziwe ngepiston, ibhloko yesilinda, intonga yomnyango kunye nentwasahlobo.
Ukutsalwa kwevalve engabuyisiyo kwiyunithi evaliweyo yokuqalisa, kuwo onke amanqanaba e-heater iqala, ukutsalwa okungafunekiyo kwevalve yolawulo lwepneumatic yokungena komoya, intonga yepiston iqhuba ukujikeleza kwengalo yerocker, umkhono wevalufa wokukhangela umkhono wepleyiti ye-axis umda. vula, ipleyiti yevalve kwimo ekhululekileyo, ngokutsalwa koxinzelelo lomphunga ukuvula ipleyiti yevalve, umphunga ngevalve kwisixhobo sokufudumeza.
Ngethuba lokusebenza okuqhelekileyo kweyunithi, ipleyiti yokukhangela i-valve igcinwa kwindawo evulekileyo ngokuqhelekileyo ngenxa yempembelelo yoxinzelelo lwe-extraction. Xa iyunithi ilahla umthwalo ukuba uyeke, ukutsalwa koxinzelelo lomphunga kuyehla, ipleyiti yevalve ixhomekeke kubunzima bayo ngokukhawuleza ibuyele esitulweni, ivalve iya kuvalwa, ukuze kuthintelwe isifudumezi kunye nomphunga kumbhobho ubuyela kwisitulo. i-injini yomphunga, ukufezekisa indima yokukhusela
Umsebenzi wokulungiselela phambi kokutshintshwa kwevalve yokukhangela i-extraction inezinto ezilandelayo:
Emva kokuba IZIXHOBO ZOKUMISA INKONZO, UKUKHUSELA KUNYE kunye nemithombo yamandla kunye nemithombo yomoya, i-air inlet kunye ne-outlet joints yesihlalo sokulawula umoya iya kukhululwa, izikhonkwane ezidityaniswe nentonga ye-piston yesihlalo sokulawula kunye ne-valve yokukhangela i-lever. ukususwa, kwaye isihlalo sokulawula siya kususwa emva kokukhulula iibholithi zokulungisa isihlalo sokulawula kwaye sibekwe ngokobungakanani. Emva koko, qhubela phambili kulo msebenzi ulandelayo.
1, ukuchithwa kwevalve
(1) Okokuqala, phawula ulungelelwaniso phakathi komnqwazi kunye nomzimba wevalve ngesiphawuli, uze ukhulule ibolt yokususa ikepusi.
(2) Susa i-bearing, i-oyile yokugcina i-oyile kunye ne-lever kwicala lokudibanisa le-lever shaft kunye nesihlalo sokulawula umoya, kwaye uzibeke kwindawo echanekileyo.
(3) Khulula inati enkulu yesigqubuthelo sotywino kwaye ususe iringi enkulu yoxinzelelo.
(4) Emva kokwenza amanqaku ahambelanayo, khulula iibholiti zokulungisa zenkxaso enkulu, susa inkxaso enkulu, uyibeke.
(5) Susa i-lever shaft kunye ne-bushing, kwaye uzibeke.
(6) Susa isibiyeli esincinci kunye nezixhobo kwicala le-shaft yengalo yerocker kwaye uzibeke.
(7) Khulula i-nati yokulungisa kwindandatho encinci yoxinzelelo, susa isangqa esincinci soxinzelelo, kwaye ubeke ngokobungakanani.
(8) Emva kokwenza uphawu oluhambelanayo, khulula i-bolt yokumisa kwi-cover cover, susa i-flange cover, kwaye uyibeke.
(9) Susa ingalo yerocker kunye ne-spool, kwaye uzibeke.
(10) Thabatha ingalo egungqayo, ujike, uzibeke;
2, ukuhlolwa kokucoca ivalvu
(1) Jonga umgca wevalvu kwi-spool kunye nevalve yomzimba. Umgca wevalve kufuneka ungabina grooves, iipores kunye nezalathi zomphezulu wokutywina onqamlezayo ochaphazela ukusebenza kokutywinwa, kwaye kufuneka udibane ngokupheleleyo ngaphandle kokuphazamiseka. Ukuba iziphene ezichaphazela ukusebenza kokutywinwa zifunyenwe, ukugaya kunye nolunye unyango kufuneka lwenziwe.
(2) Khangela unxibelelwano phakathi kwevalve butterfly kunye nengalo yerocker, lungisa igasket kunye ne-rocker arm gap phakathi kwe-1 ~ 1.2mm, akufanele ibe nkulu kakhulu okanye incinci kakhulu, kungenjalo kufuneka ilungiswe. Udibaniso lwe nut phakathi kwevalve butterfly kunye ne rocker arm kufuneka luqine, i welding joint kufuneka igqibelele kwaye ingaqhekeki, kwaye umsantsa phakathi kwevalve butterfly shaft kunye ne rocker arm ring kufuneka uhlangabezane neemfuno.
(3) Qwalasela ukucoceka phakathi kwe-lever shaft, i-rocker shaft kunye nesayizi ye-bushing kunye ne-cast arm kufuneka ihlangabezane neemfuno, kwaye umphezulu we-shaft nganye kunye nomphezulu wodonga lwangaphakathi lwe-bushing kufuneka ugude kwaye ucoceke ngaphandle kwemingxuma.
(4) Khangela ukupakishwa kwisigqubuthelo esikhulu sesitywina kunye nesigqubuthelo seflange, kufuneka sigcwale, ukuba kukho umonakalo kufuneka kutshintshwe.
(5) Khangela ukuba umphezulu wokutywina wevalve yesivalo kunye nomzimba wevalvu kufuneka uphelele, ngaphandle kweegrooves, iitracholes kunye nemikrwelo echaphazela isiphumo sokutywinwa.
(6) Coca kwaye ujonge umphezulu wokutywina kwindawo yenkxaso, isigqubuthelo seflange kunye nendlu yevalvu, kunye negasket endala encanyathiselwe kumphezulu wokutywina kufuneka icocwe kwaye ihlatywe kude. Umphezulu wokutywina awuyi kuba neziphene ezichaphazela isiphumo sokutywinwa.
(7) Zonke izitshixo kunye nezitshixo kufuneka zicocwe kwaye ziqhagamshelwe ngokufanelekileyo.
3, indibano yevalvu
Ngaphambi kokuba i-valve ifakwe, umphezulu we-shaft nganye kunye ne-bushing kufuneka uhlanjululwe nge-molybdenum disulfide powder kude kube kukhanya. Indibano kufuneka iqhutywe ngokophawu lwendibano kulandelelwano olungasemva lwe-disassembly. La manqaku alandelayo kufuneka athathelwe ingqalelo kwinkqubo yendibano:
(1) Emva kokuba ibhabhathane levalve lidityaniswe nengalo yerocker, ubukhulu begasket yokulungelelanisa bungahlengahlengiswa ukuqinisekisa ukuba iAngile yesitshixo sebhabhathane yevalve ifikelela kwiAngile efunwa ngumenzi. Emva koko, i-nut yokuqinisa kufuneka ibonakale idityaniswe ngokuqinileyo kunye nebhabhathane yevalve.
(2) Xa i-lever shaft, i-rocker shaft kunye nengalo ye-rocker zidityanisiwe, i-lever shaft kunye ne-rocker arm ekupheleni, i-gasket yokulungelelanisa ye-rocker arm shaft kunye ne-rocker arm end kufuneka ibe ne-gap ye-1 ~ 1.20mm.
(3) Xa i-rocker shaft, i-lever shaft kunye nenkxaso kunye nesigqubuthelo se-flange esidityaniswe neqokobhe lesivalo zifakelwe kwaye ziqinisiwe, kufuneka kunikwe ingqwalaselo ekugcineni amazembe amabini athe ngqo ukuthintela iswitshi yebhabhathane yevalve ukuba ingaxengaxengi okanye ibambeke.
(4) Kwinkqubo yokupakisha kuzo zombini iziphelo, isenzo se-axis nganye (i-lever shaft, i-rocker shaft) kufuneka iqinisekiswe ukuba iguquguquke kwaye ingabambeki.
(5) Zonke iigaskets kufuneka zihlaziywe.
I-4, ukuchithwa kwesihlalo sokulawula
(1) isiciko esiphezulu sesihlalo sokulawula kunye nebhloko ye-cylinder, ibhloko ye-cylinder kunye nesiseko ngamanqaku endibano, susa iibholiti ezimfutshane kwi-bolts yokuqinisa i-cylinder kunye nesiseko, kwaye uzibeke.
(2) Khulula amandongomane eebholiti ezimbini ezinde zokubopha ngexesha elinye okanye ngokwahlukeneyo, kwaye iya kwenziwa ngokucothayo (ngokunye xa ikhulula ngokulandelelanayo) ide ikhululwe, kwaye iibholiti ziya kulungiswa kwaye zibekwe.
(3) isiciko esiphezulu sesihlalo sokulawula, ibhloko ye-cylinder kunye nesiseko ziyahlukana, i-piston, intonga yomnyango kunye nentwasahlobo iyasuswa, kwaye indawo ibekwe.
(4) Susa i-cotter pin kunye ne-hexagonal groove nut, ukwenzela ukuba intonga yepiston kunye nepiston zihlulwe, zibekwe ngokusisigxina.
(5) Khangela kwaye ucoce isihlalo sokulawula.
1) Khangela ukuba udonga lwangaphakathi lwe-piston cylinder kufuneka lube lula.
2) Khangela i-cylindrical compression spring, kwaye urekhode ubude bentwasahlobo kwindawo yamahhala, ukuze uqhathanise nokugcinwa kwangaphambili (emva).
3) Khangela intonga yepiston kunye nomphezulu wepiston kufuneka ube mpuluswa.
I-4) Khangela indawo yokutywinwa kwekhava ephezulu, ibhloko ye-cylinder kunye nesiseko soxhumo kufuneka sichaneke, kwaye sicoceke.
(6) Ukufakwa kwesihlalo sokulawula. Ufakelo kunye nokudityaniswa kwakhona kwesihlalo sokulawula kufuneka kuqhutywe ngokwenyathelo eliphambeneyo lokuqhaqha, kwaye la manqaku alandelayo kufuneka ahlawulelwe:
I-1) Ukutywinwa kwe-O-ring nganye kuthathelwa indawo entsha, buyisela irabha enganyangekiyo kwiqondo lokushisa, uhlobo lokutywina umsesane;
2) udonga lwangaphakathi lomzimba we-cylinder kunye nobuso bepiston kufuneka bufakwe nge-silicone grease ukuqinisekisa ukuthambisa;
I-3) Emva kokuba isihlalo sokulawula umoya sifakwe, i-stroke engenanto yepiston ihlolwe ngomoya oxinyiweyo, omele uhlangabezane neemfuno zomenzi, kwaye isenzo sentonga yepiston kufuneka iguquguquke kwaye iqhubeke ngaphandle kokunamathela into.
(7) itshekhi iyonke. Lungisa isihlalo sokulawula kwi-valve yomzimba, kwaye udibanise ne-lever ye-valve, udibanise isixhumi somoya esicinezelekileyo, kwaye uqhube isheke jikelele. IiMfuneko:
I-1) Emva kokudibanisa kunye ne-valve yokukhangela i-extraction, ukuhamba kwe-air switch compressed kufuneka kuhambelane nohambo oluchazwe ngumenzi.
2) Kwinkqubo yokutshintsha, isenzo esipheleleyo kufuneka siqhubeke siguquguquka, ngaphandle kwento ebambekayo.
3) Isalathisi sokuvula i-valve kufuneka ihlolwe ngokuchanekileyo, kwaye ukutshintshwa kwesenzo kufuneka kuhlolwe kunye nolawulo lwe-thermal. Umboniso ovulekileyo kunye osondeleyo uhambelana neyona ndawo ibonisa indawo yevalve, kwaye ukuqinisekiswa kugqityiwe.
Eyesibini, ivalve yomgibe
1, ukuqaliswa kwe
Inkqubo yokukhupha i-injini yomphunga yinxalenye ebalulekileyo ye-thermal ye-injini yomphunga, ngakumbi, i-ontology engundoqo ye-injini yomphunga kunye nokutshisa kwakhona i-ontology ye-injini yomphunga kunye neevalvu zoxinzelelo oluphezulu, inika i-injini yempompo yomphunga omtsha kunye nenye enye ivalve ebalulekileyo yokudonsa, kumbhobho ofudumeleyo weyunithi, i-hydrophobic eqhelekileyo. iimfuno ngexesha elifanelekileyo, kunye nokusebenza okuqhelekileyo kweyunithi, ukunqumla i-valve ukuba ithembeke, akukho ukuvuza. Ukuba le migibe ivuza, impembelelo ekusebenzeni kweyunithi ibonakala kakhulu.
Ngenxa yoku, ukwaziswa kweyunithi ye-300MW ye-injini ye-injini yomphunga yezinye iivalvu ezibalulekileyo zombhobho eziphuma kumazwe angaphandle, ulwakhiwo lohlobo lomsebenzi wolawulo lwerhasi yevalve yokusikwa kweendawo ezimbini. Ivalve yeglowubhu ineenzuzo zesakhiwo esilula, ukutywinwa okulungileyo kunye nokugcinwa. Ivalve yeglowubhu ixhotyiswe ngesixhobo sokulawula umoya, esenza ukuba ivalve isebenze ngokukhawuleza kwaye iphendule, kwaye inokuhlangabezana ngcono neemfuno zeyunithi yokuzenzekelayo. Inxalenye yolawulo lwe-pneumatic yimveliso yenkampani yaseMelika i-VALTEK, kwaye inxalenye yomzimba we-valve iyimveliso yenkampani yaseMelika ONVAL. Ukwakhiwa kwe-valve kuboniswe kumzobo, kwaye isakhiwo sesixhobo sokulawula umoya siboniswe kumzobo.