Ivalve edla ngokusetyenziswa imowudi yoqhagamshelo emibini yeplanti yombane yogcino lwevalvu engundoqo

Ivalve edla ngokusetyenziswa imowudi yoqhagamshelo emibini yeplanti yombane yogcino lwevalvu engundoqo

Imidibaniso enemisonto
Le yindlela elula yokudibanisa kwaye isetyenziswa rhoqo ngeevalve ezincinci. Kukho iimeko ezimbini ezongezelelweyo:
I-1, ukutywinwa ngokuthe ngqo: imicu yangaphakathi nangaphandle idlala ngokuthe ngqo indima yokutywinwa. Ukuze kuqinisekiswe ukuba i-joint ayivuzi, rhoqo ngeoli ye-lead, i-linoleum kunye ne-PTFE i-raw material ezaliswe; ibhanti Ptfe ekrwada, ukusetyenziswa yonke imihla; Esi sixhobo sinokumelana ne-corrosion, isiphumo sokutywinwa, kulula ukuyisebenzisa kunye nokugcinwa, kwaye inokususwa ngokupheleleyo xa ichithwa, kuba ifilimu engekho i-viscous, iphezulu kakhulu kwioli ekhokelayo kunye ne-linoleum.
2. Ukutywinwa ngokungathanga ngqo: amandla e-screw tightening adluliselwa kwi-washer phakathi kweendiza ezimbini, ukwenzela ukuba i-washer idlale indima yokutywina.
UKUNIKEZELWA KWENTSALELA EQINILE, UBUCHULU, OKANYE NAYAYIPHI NA INTO ESINGAPHANDLE KUMGCA KUNOKUKUTHINTA UKUSEBENZA KWESIVIVINYO kwaye konakalise kanobom Amacandelo abalulekileyo e-valve. Ingaphakathi lombhobho kufuneka lihlambuluke ngokucokisekileyo ngomoya okanye ngomphunga.
XA UCELA UMbhobho, MLINGANISELA UBUKHULU NOBUDE BEMICHUPHO UKUNQANDA UKUGCINWA UMbhobho NGEZItulo kunye neediski.
Iziphelo zokucoca ngokucokisekileyo ukukhusela nayiphi na intsimbi eyingozi okanye iidiphozithi zentsimbi. Sebenzisa iteyiphu yeteflon okanye izinto zokuncamathelisa zemibhobho ukwenza iiweld ezinamandla. Sebenzisa i-adhesives yombhobho kuphela kwiimali ezincinci kwimicu yepayipi, kodwa kungekhona kwimicu yevalve. UNGAVUMELI naziphi na izinto ezincamathelayo ze-PIPE UKUZE ZIYE EMZIMBENI UKUPHEPHA umonakalo kwi-DISC NESIHLALO.
Ngaphambi kokufakela, cima ukuhamba ngevalve ukuze ivalve isebenze kakuhle. Vala ivalve ngokupheleleyo phambi kofakelo. Beka isitshixo kwintloko ye-hex bolt kufuphi nombhobho ukuphepha ukuguqulwa okunokwenzeka. Emva kokufaka ivelufa, XHASA UMbhobho: I-SAGGING umbhobho inokonakalisa ivalve kwaye ibangele ukusilela.
Uqhagamshelwano lweFlange
Le yeyona ndlela ixhaphakileyo yoqhagamshelwano esetyenziswa kwiivalvu. Ngokobume bomphezulu odibeneyo, unokwahlulwa ngokulandelayo:
1. Uhlobo olugudileyo: lusetyenziselwa iivalvu ezinoxinzelelo oluphantsi. Ukuqhuba kakuhle
I-2, i-concave kunye ne-convex uhlobo: uxinzelelo oluphezulu lokusebenza, lunokusetyenziswa kwi-washer enzima
3. I-Tenon kunye nohlobo lwe-groove: i-gasket ene-deformation yeplastiki enkulu ingasetyenziselwa kwimidiya ephazamisayo, kwaye umphumo wokutywinwa ungcono.
I-4, uhlobo lwe-trapezoidal groove: kunye nentsimbi yentsimbi e-oval njenge-washer, esetyenziselwa uxinzelelo olusebenzayo lwe-64 kg / cm2 valve, okanye i-valve ephezulu yokushisa.
I-5, uhlobo lwe-lens: i-washer i-lens shape, eyenziwe ngesinyithi. Kwimivalo ephezulu yoxinzelelo oluphezulu kunye ne-100 kg / CM2, okanye i-valve ephezulu yokushisa.
I-6, uhlobo lwe-ring ye-O: Olu luhlobo olutsha lokudibanisa i-flange, luphuhliswa ngokubonakala kwazo zonke iintlobo ze-rubber ye-O ring, inokwethenjelwa ngakumbi kune-washer yeflethi ngokubanzi kwisiphumo sokutywinwa.
Ukuqinisekisa ukufakela okufanelekileyo koqhagamshelo lweflange, landela la manyathelo. Okokuqala ucoce ngokucophelela amajoyina, uze udibanise ngokukhululekileyo iibholiti ezimbini okanye ezintathu kwisiseko. Emva koko, faka ngokucophelela i-spacer kwi-joint. I-bolt ephantsi inceda ukubeka i-gasket kwaye uyigcine kwindawo. Iibholiti zokufaka kufuneka emva koko ziqiniswe ngokunqamlezayo kune-WRAPAROUND, enceda ukuphelisa uxinzelelo oluxinana kakhulu. Emva kokusetyenziswa okuqhelekileyo ixesha elithile, khangela ukuba zonke iibholiti ziqinisiwe kwaye ziphinde ziqiniswe njengoko kuyimfuneko.
Ivalve yokujonga ukugcinwa kwevalve ephambili kwiplanti yamandla yivalve esetyenziselwa ukuthintela umva ophakathi 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 lobushushu, 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, ukuqaliswa kweyunithi ye-300MW ye-injini ye-injini yomphunga yezinye iivalvu ezibalulekileyo zombhobho zombhobho ophuma kumazwe angaphandle, ubume bohlobo 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.
2, ukugcinwa komgibe
Ekubeni i-valve yenziwe ngamacandelo amabini, indlela yokulawula kunye nomzimba we-valve, ukuchithwa kuqhutyelwa ngamanyathelo amabini.
(1) Ukuchithwa kwendlela yokulawula.
I-4) Susa i-inlet yombhobho womoya oxinyiweyo, i-valve ye-solenoid, utshintsho lwesenzo kunye nezinye iindawo ezidityaniswe nendlela yokulawula umoya, kwaye uzibeke.
5) Susa isixhobo sokusebenza ngesandla sendlela yokulawula kwaye uyibeke.
6) Ukukhulula zonke iibholiti zoxinzelelo lwentwasahlobo phezulu kwindlela yokulawula.
7) Khulula ibholithi yokuqinisa kuqhagamshelo phakathi kwendlela yokulawula kunye nesiqu sevalve, kwaye uhambise ikhonkco lokubopha phezulu kancinci.
I-8) Khulula i-bolt yokudibanisa kwi-block ye-Haff ye-lock elungisa isihlalo sokulawula kumzimba we-valve, susa iibhloko ezimbini zokukhiya, udibanise iibhloko ezimbini zokukhiya ngeebholiti, uze uzibeke.
9) Khulula i-nut yokudibanisa phakathi kwentonga yocango lwevalve kunye nesixhobo sokulawula nge-wrench de umatshini wokulawula ususwe kumzimba wevalvu kwaye indlela yokulawula ibekwe.
(4) Qwalasela umphezulu wokutywina kabini wevalvu kunye neringi yokutywina kwipleyiti yesivalo. Ukuba iringi yokutywina yonakaliswe kakhulu ngexesha lokusetyenziswa kwevalve kwaye ichaphazela ukutywinwa kwevalve, iringi yokutywina esecaleni kufuneka itshintshwe ngexesha.
(5) Qinisekisa ukubetha kwevalve kunye nomda wobude emva kokujonga isitywina sevalve sicocekile. Ngeli xesha, abasebenzi abakwimibhobho kufuneka babeke iliso ngononophelo kwaye bajonge, baqinisekise ukuba isenzo somda wesiqhelo sokutshintsha kombane kwevalve sichanekile, bakhuphe imisebenzi, izixhobo zombane kunye namanye amanqaku kumbhobho, bakhuphe abasebenzi, kwaye babuyisele umngxuma. umnyango.