[Katundu wowuma] chomangira chamagetsi chachikulu chokonza ma valve DQW gawo la ma valve ozungulira omwe amafunikira

[Katundu wowuma] chomangira chamagetsi chachikulu chokonza ma valve DQW gawo la ma valve ozungulira omwe amafunikira

Valve yoyendera ndi valavu yomwe imagwiritsidwa ntchito kuteteza kubweza kwa media mu mapaipi ndi zida. Valavu yowunikira yotulutsa mpweya imayikidwa pa chitoliro chilichonse cha chotenthetsera chakunja munjira yobwezeretsa nthunzi ya seti ya turbine ya nthunzi. Ntchito yake ndikutseka mbale ya valve yokhayo pamene unit ikutaya katundu, kuti ateteze nthunzi kumbali ya nthunzi ya chotenthetsera ndi chitoliro cholowetsa nthunzi kuti chisagwere mu turbine ya nthunzi ndikupangitsa kuti turbine ya nthunzi ikhale yothamanga kwambiri kuti ipewe. ngozi.
Kukonza ma valve akuluakulu
1. Vavu yoyang'ana m'zigawo
Valve yoyendera ndi valavu yomwe imagwiritsidwa ntchito kuteteza kubweza kwa media mu mapaipi ndi zida. Valavu yowunikira yotulutsa mpweya imayikidwa pa chitoliro chilichonse cha chotenthetsera chakunja munjira yobwezeretsa nthunzi ya seti ya turbine ya nthunzi. Ntchito yake ndikutseka mbale ya valve yokhayo pamene unit ikutaya katundu, kuti ateteze nthunzi kumbali ya nthunzi ya chotenthetsera ndi chitoliro cholowetsa nthunzi kuti chisagwere mu turbine ya nthunzi ndikupangitsa kuti turbine ya nthunzi ikhale yothamanga kwambiri kuti ipewe. ngozi.
Valavu yowunikira yotulutsa mpweya ya 300MW yotumizidwa kunja ndi valavu yoyang'anira mpweya, mawonekedwe akuwonetsedwa pachithunzichi, ndipo mawonekedwe a mpando wowongolera mpweya akuwonetsedwa pachithunzichi. Amapangidwa makamaka ndi thupi la valve, mbale ya valve, shaft, manja ndi zina zotero. Mpando wowongolera mpweya umapangidwa ndi pisitoni, cylinder block, khomo ndodo ndi kasupe.
Vavu yotulutsa yosabwerera pakuyambira kotsekeka, pamagawo onse otenthetsera imayamba, kutulutsa mwachisawawa kuwongolera mpweya wa mpweya, ndodo ya pisitoni imayendetsa kuzungulira kwa mkono wa rocker, valavu ya valve yozungulira yozungulira ya valve plate axis limit. lotseguka, mbale valavu mu dziko ufulu, ndi m'zigawo nthunzi kuthamanga kutsegula mbale valavu, nthunzi kudzera valavu mu chotenthetsera.
Pa ntchito yachibadwa ya unit, mbale ya valve yowunikira imasungidwa pamalo omwe nthawi zambiri imatseguka chifukwa cha mphamvu ya kutulutsa. Pamene unit itaya katunduyo kuti ayime, kuthamanga kwa nthunzi kumatsika, mbale ya valve imadalira kulemera kwake mwamsanga kubwerera kumpando, valavu idzatsekedwa, kuteteza heater ndi nthunzi mu payipi kubwerera ku mpando. turbine ya nthunzi, kuti mukwaniritse ntchito yachitetezo
Ntchito yokonzekera isanayambe kukonzanso valavu yoyendera m'zigawo ili ndi izi:
Pambuyo ZOTHANDIZA ZIMAKHALA SERVICE, CHITETEZO NDI mphamvu ndi magwero a mpweya ZITHA, mpweya wolowera ndi mpweya wa mpando wolamulira mpweya udzamasulidwa, zikhomo zomwe zimagwirizanitsidwa ndi ndodo ya pisitoni ya mpando wolamulira ndi lever ya valve. kuchotsedwa, ndipo mpando wolamulira udzachotsedwa mutatha kumasula ma bolts a mpando wolamulira ndikuyika mochuluka. Kenako, pitirizani ntchito zotsatirazi.
1, kuwonongeka kwa valve
(1) Choyamba, lembani mgwirizano pakati pa kapu ndi thupi la valve ndi cholembera, ndiyeno masulani bolt kuti muchotse chipewacho.
(2) Chotsani kunyamula, mphete yosungira mafuta ndi lever kumbali yolumikizira ya lever shaft ndi mpando wowongolera mpweya, ndikuyiyika pamalo okhazikika.
(3) Masulani mtedza waukulu wosindikizira ndikuchotsa mphete yayikulu.
(4) Pambuyo popanga zizindikiro zofananira, masulani mabotolo okonzekera chithandizo chachikulu, chotsani chothandizira chachikulu, ndikuchiyika.
(5) Chotsani tsinde lachitsulo ndi chitsamba, ndikuchiyika.
(6) Chotsani bulaketi yaying'ono ndi zowonjezera patsinde la mkono wa rocker ndikuziyika.
(7) Masulani mtedza wokonzera pa mphete yaing'ono yokakamiza, chotsani mphete yaing'ono, ndikuyika mochulukira.
(8) Pambuyo popanga chizindikiro chofananira, masulani bolt yokonzekera pachivundikiro cha flange, chotsani chophimba cha flange, ndikuchiyika.
(9) Chotsani mkono wa rocker ndi spool, ndikuyiyika.
(10) Tulula mkono wakugwetsa ndi spool, nuwaike.
2, kuyendera ma valve kuyeretsa
(1) Yang'anani mzere wa valve pa spool ndi thupi la valve. Mzere wa valve uyenera kukhala ndi grooves, pores ndi zizindikiro za malo osindikizira omwe amakhudza ntchito yosindikiza, ndipo ayenera kukhudzana kwathunthu popanda kusokoneza. Ngati zolakwika zomwe zimakhudza ntchito yosindikiza zipezeka, kugaya ndi mankhwala ena ayenera kuchitidwa.
(2) Onani kugwirizana pakati pa gulugufe wa valve ndi mkono wa rocker, sinthani kusiyana kwa gasket ndi rocker mkono pakati pa 1 ~ 1.2mm, sayenera kukhala yaikulu kwambiri kapena yaying'ono kwambiri, mwinamwake iyenera kusinthidwa. Kulumikizana kwa mtedza pakati pa gulugufe wa valavu ndi mkono wa rocker kuyenera kukhala kolimba, cholumikizira chowotcherera chiyenera kukhala chokwanira komanso chosasweka, ndipo kusiyana pakati pa shaft ya gulugufe ndi mphete ya rocker ikwaniritse zofunikira.
(3) Yang'anani chilolezo pakati pa lever shaft, shaft ya rocker ndi kukula kwa bushing ndi mkono woponyedwa uyenera kukwaniritsa zofunikira, ndipo pamwamba pa tsinde lililonse ndi khoma lamkati la tchire liyenera kukhala losalala komanso loyera popanda maenje.
(4) Yang'anani kulongedza mu chivundikiro chachikulu chosindikizira ndi chivundikiro cha flange, chiyenera kukhala chokwanira, ngati pali zowonongeka ziyenera kusinthidwa.
(5) Onetsetsani kuti kusindikiza pamwamba pa kapu ya valve ndi thupi la valve liyenera kukhala lathunthu, popanda ma grooves, tracholes ndi kupyola muzitsulo zomwe zimakhudza kusindikiza.
(6) Tsukani ndikuyang'ana malo osindikizira pamgwirizano wa chithandizo, chivundikiro cha flange ndi nyumba ya valve, ndi gasket yakale yomwe imamatira pamtunda wosindikizayo iyenera kutsukidwa ndikuchotsapo fosholo. Malo osindikizira asakhale ndi zolakwika zomwe zimakhudza kusindikiza.
(7) Makiyi onse ndi makiyi ayenera kutsukidwa ndikulumikizidwa bwino.
3, kuphatikiza ma valve
Vavu isanakhazikitsidwe, pamwamba pa tsinde lililonse ndi tchire ziyenera kupakidwa ndi ufa wa molybdenum disulfide mpaka kuwala. Msonkhanowo uyenera kuchitidwa molingana ndi chizindikiro cha msonkhano muzotsatira zotsatizana za disassembly. Mfundo zotsatirazi ziyenera kutsatiridwa pokonzekera msonkhano:
(1) Gulugufe wa valavu atalumikizidwa ndi mkono wa rocker, makulidwe a gasket yosinthira amatha kusinthidwa kuti atsimikizire kuti Angle ya butterfly switch ifika pa Angle yofunikira ndi wopanga. Pambuyo pake, mtedza womangirira uyenera kulumikizidwa mwamphamvu ndi gulugufe wa valve.
(2) Pamene tsinde la lever, shaft ya rocker ndi rocker yasonkhanitsidwa, tsinde la lever ndi mkono wa rocker kumapeto, chosinthira cha rocker arm shaft ndi rocker arm end chiyenera kukhala ndi kusiyana kwa 1 ~ 1.20mm.
(3) Pamene shaft ya rocker, shaft ya lever ndi chothandizira ndi chivundikiro cha flange cholumikizidwa ndi chipolopolo cha valavu chaikidwa ndikumangidwa, chisamaliro chiyenera kuperekedwa kuti nkhwangwa ziwirizo zikhale zokhazikika kuti ateteze kusintha kwa gulugufe kuti asatayike kapena kukakamira.
(4) Ponyamula mbali zonse ziwiri, zochita za axis iliyonse (lever shaft, rocker shaft) ziyenera kutsimikiziridwa kuti zikhale zosinthika komanso zosakanizidwa.
(5) Ma gaskets onse ayenera kusinthidwa.
4, kupasuka kwa mpando wowongolera
(1) chivundikiro chapamwamba cha mpando wolamulira ndi chipika cha silinda, chipika cha silinda ndi maziko ndi zizindikiro za msonkhano, chotsani mabawuti afupiafupi muzitsulo zomangirira za silinda ndi maziko, ndi kuziyika.
(2) Kumasula mtedza wazitsulo ziwiri zomangirira zazitali nthawi imodzi kapena padera, ndipo ziyenera kuchitidwa pang'onopang'ono (mosinthana pamene mukumasula motsatira) mpaka kumasulidwa, ndipo ma bolts adzakhazikika ndi kuikidwa.
(3) chivundikiro chapamwamba cha mpando wolamulira, chipika cha silinda ndi maziko amalekanitsidwa, pisitoni, ndodo yachitseko ndi kasupe zimachotsedwa, ndipo malowa amaikidwa.
(4) Chotsani pini ya cotter ndi mtedza wa hexagonal groove, kuti ndodo ya pisitoni ndi pisitoni zilekanitsidwe, kuyika kokhazikika.
(5) Yang'anani ndikuyeretsa mpando wowongolera.
1) Onetsetsani kuti khoma lamkati la silinda ya pistoni liyenera kukhala losalala.
2) Yang'anani kasupe wa cylindrical compression, ndikulemba kutalika kwa kasupe mu ufulu waulere, kuti mufananize ndi kukonza kwam'mbuyo (pambuyo).
3) Onani pisitoni ndodo ndi pisitoni pamwamba ayenera kukhala yosalala.
4) Yang'anani malo osindikizira a chivundikiro chapamwamba, chipika cha silinda ndi cholumikizira chapansi chiyenera kukhala chokhazikika, ndikuyeretsa.
(6) Kukhazikitsa mpando wolamulira. Kuyika ndi kukonzanso mpando wowongolera kuyenera kuchitika molingana ndi gawo losokoneza la disassembly, ndipo mfundo zotsatirazi ziyenera kutsatiridwa:
1) Chisindikizo chilichonse cha O-ring chimasinthidwa ndi chatsopano, m'malo mwa mphira wosagwira kutentha, mtundu wosindikiza mphete;
2) khoma lamkati la thupi la silinda ndi pamwamba pa pisitoni ziyenera kukhala zokutidwa ndi mafuta a silikoni kuti zitsimikizidwe kuti ndizopaka mafuta;
3) Pambuyo poyika mpando wowongolera mpweya, kugunda kopanda kanthu kwa ndodo ya pisitoni kumafufuzidwa ndi mpweya woponderezedwa, womwe uyenera kukwaniritsa zofunikira za wopanga, ndipo zochita za ndodo ya pistoni ziyenera kukhala zosinthika komanso zosalekeza popanda kumamatira chodabwitsa.
(7) cheke chonse. Konzani mpando wowongolera pa thupi la valavu, ndikugwirizanitsa ndi lever ya valavu, gwirizanitsani cholumikizira mpweya woponderezedwa, ndikuchita cheke chonse. Zofunikira:
1) Pambuyo pophatikizana ndi valavu yoyang'ana m'zigawo, kuyenda kwa mpweya woponderezedwa kuyenera kugwirizana ndi ulendo wotchulidwa ndi wopanga.
2) Mukusintha, zochita zonse ziyenera kukhala zosinthika mosalekeza, popanda chodabwitsa.
3) Chizindikiro chotsegulira cha valve chiyenera kufufuzidwa bwino, ndipo chosinthira chochita chiyenera kufufuzidwa pamodzi ndi kulamulira kutentha. Chiwonetsero chotseguka ndi chotseka chikugwirizana ndi malo enieni omwe amawonetsa valve, ndipo kutsimikizira kwatha.
Awiri, valavu ya msampha
1, chiyambi cha
Mpweya wa turbine drainage system ndi gawo lofunika kwambiri la matenthedwe a turbine turbine system, makamaka, nthunzi yayikulu ndikutenthetsanso mpweya wa turbine ontology ndi ma valve othamanga kwambiri, perekani makina opangira mpweya watsopano ndi zina zofunika kukhetsa, mu chitoliro chofunda, hydrophobic wamba. zofunika m'nthawi yake, ndi ntchito yachibadwa ya unit, kudula valavu kukhala odalirika, palibe kutayikira. Ngati misampha iyi itayikira, zotsatira zake pakuchita bwino kwa unit zimawonekera kwambiri.
Poganizira izi, kukhazikitsidwa kwa 300MW turbine turbine unit ya mavavu ofunika kwambiri akukhetsa ndi mavavu ochokera kunja, mawonekedwe amtundu wa ntchito yowongolera mpweya wa valavu yodula magawo awiri. Valve yapadziko lonse lapansi ili ndi maubwino apangidwe kosavuta, kusindikiza bwino komanso kukonza. Valve yapadziko lonse lapansi imakhala ndi makina owongolera ma pneumatic, omwe amapangitsa kuti valavu igwire ntchito mwachangu komanso momvera, ndipo imatha kukwaniritsa zofunikira za unit automation. Gawo lolamulira chibayo ndilopangidwa ndi kampani ya American VALTEK, ndipo gawo la thupi la valve ndilopangidwa ndi kampani ya American ONVAL. Mapangidwe a valve akuwonetsedwa pachithunzichi, ndipo mawonekedwe a chipangizo chowongolera mpweya akuwonetsedwa pachithunzichi.