Iivalvu zesangoZiivalvu ezisikiweyo, ngokuqhelekileyo zifakwe kwimibhobho enobubanzi obungaphezu kwe-100mm, ukunqumla okanye ukudibanisa ukuhamba okuphakathi kumbhobho.Ngenxa yokuba i-disc luhlobo lwesango, ngokuqhelekileyo kuthiwa yi-aivalve yesango.Iivalve yesangoineenzuzo zomgudu ophantsi wokutshintsha kunye nokumelana nokuhamba okuphantsi.Nangona kunjalo, indawo yokutywina kulula ukuyinxiba kunye nokuvuza, i-stroke yokuvula inkulu, kwaye ukugcinwa kunzima.Iivalve yesangoayinakusetyenziswa njengesivalo esilawulayo kwaye kufuneka ibekwindawo evuleke ngokupheleleyo okanye evalwe ngokupheleleyo.Umgaqo wokusebenza ngulo: xa iivalve yesangoivaliwe, isiqu sevalve sihamba sijonge ezantsi ngokuxhomekeke kumphezulu wokutywina weivalve yesangokunye nomphezulu wokutywina wesihlalo sevalve ukuba ube mtyibilizi kakhulu, ube mcaba kwaye ungaguquguquki.Ziyalingana ukuze kuthintelwe i-medium ukuba ingaphumi, kwaye ixhomekeke kwi-wedge ephezulu ukunyusa isiphumo sokutywinwa.Isiqwenga sokuvala sihamba ecaleni kwendlela ethe nkqo yomgca ophakathi.Kukho iintlobo ezininziiivalve zesango, ezinokuthi zihlulwe zibe luhlobo lwe-wedge kunye nohlobo oluhambelanayo ngokweentlobo zabo.Uhlobo ngalunye lwahlulwe lwaba yisango elinye kunye nesango eliphindwe kabini.
1.2 Ulwakhiwo:
Umzimba wevalvu weivalve yesangowamkela ifom yokuzitywina.Uqhagamshelo phakathi kwebhonethi kunye nomzimba wevalvu kukusebenzisa uxinzelelo oluphezulu oluphakathi kwivalve ukunyanzela ukupakishwa kokutywina ukuba kucinezelwe ukufezekisa injongo yokutywinwa.Iivalve yesangoukupakisha kutywinwe nge-high-pressure asbestos ukupakisha ngocingo lobhedu.
Ubume beivalve yesangoikakhulu yenziwe ngumzimba wevalve, isigqubuthelo sevalvu, isakhelo, isiqu sevalve, iidiski zevalve ekhohlo nasekunene, kunye nesixhobo sokupakisha sokutywina.
2. Inkqubo yohlengahlengiso lweivalve yesango
2.1 Ukuqhaqha iValve:
2.1.1 Susa iibholithi zokulungisa zesakhelo esiphezulu sebhonethi, khulula amandongomane eebholiti ezine kwibhonethi, jija isiqu se-nati ngasekunene ukwahlula isakhelo sevalvu kumzimba wevalvu, emva koko usebenzise isixhobo sokuphakamisa ukuphakamisa isivalo. isakhelo phantsi, Yibeke kwindawo eyiyo.I-stem nut kufuneka iqhaqheke ukuze ihlolwe.
2.1.2 Khupha iringi yokutywina kumsesane ophindwe kane womzimba wevalvu, kwaye ucinezele ezantsi ibhonethi ngesixhobo esikhethekileyo ukwenza umsantsa phakathi kwebhonethi neringi kane.Emva koko khupha iringi yesine ngokwamacandelo.Okokugqibela, sebenzisa isixhobo sokuphakamisa ukuphakamisa isivalo sevalve kunye nesiqu sevalve kunye nevalve ivalele ngaphandle komzimba wevalvu.Yibeke kwindawo yogcino, kwaye unike ingqwalaselo yokuthintela umonakalo kwi-valve clack joint surface.
2.1.3 Coca ngaphakathi kumzimba wevalvu, jonga indawo edibeneyo yesitulo sevalvu, kwaye ujonge indlela yokuyigcina.Gubungela ivalve echithwayo ngepleyiti ekhethekileyo yokugubungela okanye i-cover, kwaye unamathele isitywina.
2.1.4 Khulula iibholithi zehenjisi zebhokisi yokuhlohla kwisivalo sevalvu.Idlala lokupakisha liyakhululeka kwaye nesiqu sevalvu sikhutshwa.
2.1.5 Susa izikhonkwane ezingaphezulu nezisezantsi zesakhelo sediski, khupha iidiski ezisekhohlo nasekunene, kwaye ugcine i-universal top yangaphakathi kunye ne-gasket.Ukulinganisa ubukhulu begasket kwaye wenze irekhodi.
2.2 Ukulungiswa kweendawo ezahlukeneyo zevalvu:
2.2.1 Umphezulu odibeneyo weivalve yesangoisihlalo kufuneka sibe phantsi ngesixhobo esikhethekileyo sokugaya (umpu wokugaya, njl.).Ukugaya kunokusebenzisa isanti e-abrasive okanye ilaphu le-emery.Indlela ikwasuka korhatyazo ukuya kwelungileyo, kwaye ekugqibeleni igudisiwe.
2.2.2 Umphezulu odibeneyo we-valve clack unokusilwa ngesandla okanye ngomatshini wokusila.Ukuba umphezulu unomngxuma onzulu okanye i-groove, ingathunyelwa kwi-lathe okanye i-grinder ye-micro processing, kwaye iya kugudiswa emva kwayo yonke imigangatho.
2.2.3 Coca ibhonethi kunye nokupakishwa kokutywinwa, susa umhlwa kunye nokungcola kwiindonga zangaphakathi nangaphandle zeringi yokupakisha, ukwenzela ukuba i-ring press ifakwe ngokufanelekileyo kwindawo ephezulu yebhonethi, kwaye ikulungele compress ukupakishwa kwetywina.
2.2.4 Coca ukupakishwa kwangaphakathi kwebhokisi yokufaka i-valve stem, khangela ukuba i-ring yangaphakathi yokupakisha isihlalo ilungile, isithuba phakathi komngxuma wangaphakathi kunye nentonga yokusika kufuneka ihlangabezane neemfuno, kunye nendandatho yangaphandle kunye nodonga lwangaphakathi lokuxutywa. ibhokisi akufanele ixinzelelwe.
2.2.5 Coca umhlwa kwi-packing gland kunye ne-pressure plate, kwaye umphezulu kufuneka ucoceke kwaye uphelele.Umsantsa phakathi komngxuma wangaphakathi wegland kunye nentonga yokusika kufuneka ihlangabezane neemfuno, kwaye udonga lwangaphandle kunye nebhokisi lokupakisha kufuneka likhululeke kwiijam, ngaphandle koko ukulungiswa kufuneka kwenziwe.
2.2.6 Khulula iibholithi zehenjisi, khangela ukuba indawo ephothiweyo icocekile kwaye i-nut imile, inokukrunwa kancinci kwingcambu yebholiti ngesandla, kwaye isikhonkwane kufuneka sibe bhetyebhetye ukuze sijikeleze.
2.2.7 Coca umhlwa kumphezulu wesikhondo sevalve, khangela ukugoba, kwaye wolule ukuba kuyimfuneko.Inxalenye yentambo ye-trapezoidal kufuneka ihambelane, ngaphandle kokuphuka kunye nomonakalo, kwaye ifakwe ngepowder ekhokelayo emva kokucoca.
2.2.8 Coca iringi yesine, kwaye umphezulu kufuneka ube mpuluswa.Inqwelomoya akufuneki ibe namaqhuma okanye imiphetho egobileyo.
2.2.9 Zonke iibholiti zokubopha kufuneka zihlanjululwe, amantongomane kufuneka aphelele kwaye aguquguquke, kwaye iindawo ezifakwe kwi-threaded kufuneka zifakwe nge powder powder.
2.2.10 Coca i-stem nut kunye nokuzala kwangaphakathi:
①Susa ivalve stem nut lock kunye nesikrufu sokulungisa sendlu, kwaye ukhulule isikrufu sokutshixa kwicala elichasene newotshi.
② Khupha i-stem nut kunye ne-bearing, i-disc spring, kwaye uyicoce nge-kerosene.Khangela ukuba i-bearing ijikeleza ngokuguquguqukayo kwaye ingaba i-disc spring ineentanda.
③ Coca i-valve stem nut, khangela ukuba i-bushing yangaphakathi ye-trapezoidal screw ilungile, kwaye isikrufu sokulungisa esineqokobhe kufuneka siqine kwaye sithembeke.Ukunxiba kwe-bushing kufuneka kuhlangabezane neemfuno, ngaphandle koko kufuneka kuthathelwe indawo.
④ Gcoba ibhotolo kwaye uyifake kwi-stem nut.Imithombo yediski idityaniswe njengoko ifunwa kwaye iphinda idityaniswe ngokulandelelana.Ekugqibeleni, yitshixe nge-lock nut, uze uyilungise ngokuqinileyo ngesikrufu.
2.3 INdibano yeivalve yesango:
2.3.1 Nxiba iidiski ezivunyiweyo ekhohlo nasekunene kwiringi ye-stem clamp kwaye uzilungise ngeeclamp eziphezulu nezisezantsi.Ingaphakathi kuyo kufuneka ifakwe kwi-universal top, kwaye i-gasket yokulungelelanisa kufuneka ihlolwe ngokwemeko yokugcinwa.
2.3.2 Faka isikhondo sevalvu kunye nediski yevalvu kwisitulo sevalve ukuze ihlolwe.Emva kokuba idiski yevalve kunye nomgangatho wokutywina wesihlalo sevalve zidibene ngokupheleleyo, kufuneka kuqinisekiswe ukuba indawo yokutywina yediski yevalve iphezulu kunomgangatho wokutywina wesihlalo sevalve kwaye ihlangabezana neemfuno zomgangatho.Ngaphandle koko, kufuneka ilungiswe.Ubunzima be-gasket phezulu de bube bufanelekile, kwaye i-gasket echasene ne-return isetyenziselwa ukutywina ukuyikhusela ukuba ingawa.
2.3.3 Coca umzimba wevalvu, uze wosule isitulo sevalvu kunye nediski.Emva koko beka isiqu sevalve kunye nediski yevalve kwisitulo sevalve, kwaye ufake isigqubuthelo sevalvu.
2.3.4 Fakela ukupakishwa kokutywina njengoko kufuneka kwindawo yokuzitywina yebhonethi.Inkcazo yokupakisha kunye nenani lokujika kufuneka lihlangabezane nomgangatho womgangatho.Inxalenye ephezulu yokupakisha igxininiswe ngokuqinileyo ngendandatho yoxinzelelo, kwaye ekugqibeleni ivalwe ngesitya sokugubungela.
2.3.5 Hlanganisa i-quadruple ringi kumacandelo elinye nelinye, sebenzisa iringi yogcino ukuyandisa ukuyithintela ukuba ingawi, kwaye uqinise nati yebholithi yokunyusa ibhonethi.
2.3.6 Gcwalisa isiqu sevalvu yokutywina ibhokisi yokufaka ngokupakisha njengoko kufuneka, yifake kwidlala lokusebenza kunye nepleyiti yoxinzelelo, kwaye uyijonge ngokuqinileyo ngesikrufu sehinge.
2.3.7 Fakela ifreyim yebhonethi, ujikelezisa isiqu esiphezulu ukwenza ifreyimu iwele kumzimba wevalvu, kwaye uyibophe ngeebholithi zokuyinqanda ukuba ingawi.
2.3.8 Fakela isixhobo somqhubi wombane wevalve;ucingo oluphezulu lwecandelo lokudibanisa kufuneka luqiniswe ukuze luthintele ukuwa, kwaye uvavanye ngesandla ukuba i-flap switch iguquguqukayo.
2.3.9 Ipleyiti yegama lesivalo icacile, ayichanekanga kwaye ichanekile.Iirekhodi zogcino ziphelele kwaye zicacile;kwaye amava amkelwe njengafanelekile.
2.3.10 Imibhobho kunye neevalvu zine-insulation epheleleyo, kwaye indawo yokugcina kufuneka icocwe.
3. Imigangatho yomgangatho weivalve yesangoukugcinwa
3.1 Umzimba wevalvu:
3.1.1 Umzimba wevalvu kufuneka ungabinaziphene ezifana namadyungudyungu, iintanda kunye nokukhuhlwa, kwaye kufuneka kujongwane nawo kwangethuba emva kokufunyanwa.
3.1.2 Makungabikho nkunkuma kumzimba wevalvu kunye nombhobho, kwaye indawo yokungena kunye nendawo yokuphuma kufuneka ivuleke.
3.1.3 Iplagi ye-screw kumzantsi womzimba wevalvu kufuneka iqinisekise ukutywinwa okuthembekileyo kwaye akukho kuvuza.
3.2 Isiqu sevalvu:
3.2.1 I-curvature ye-valve stem akufanele ibe ngaphezu kwe-1/1000 yobude obupheleleyo, ngaphandle koko kufuneka ilungiswe okanye itshintshwe.
3.2.2 Inxalenye yentambo ye-trapezoidal ye-valve stem kufuneka ibe yomelele, ingabikho ukuphuka, i-snapping kunye nezinye iziphene, kwaye ubuninzi bokugqoka akufanele bube ngaphezu kwe-1/3 yobukhulu bomsonto we-trapezoidal.
3.2.3 Umphezulu ugudile kwaye ucocekile, awunarusi kunye nesikali, kwaye indawo yokudibanisa yokutywina kunye nokupakishwa kufuneka ingabinayo i-corrosion ene-flaky kunye ne-design delamination.I-uniform corrosion point deep ≥ 0.25 mm kufuneka itshintshwe enye entsha.Ukugqiba kufuneka kuqinisekiswe ukuba kungaphezulu ▽6.
3.2.4 Umsonto wokudibanisa kufuneka ungaguquki kwaye izikhonkwane kufuneka zilungiswe ngokuthembekileyo.
3.2.5 Emva kokuba i-stub kunye ne-stub nut zidibaniswe, kufuneka zijikeleze ngokukhawuleza, ngaphandle kwe-jamming ngexesha lokubetha okupheleleyo, kwaye imicu kufuneka ifakwe kwi-powder powder ukukhusela.
3.3 Ukupakisha isitywina:
3.3.1 Uxinzelelo kunye nobushushu bokupakisha okusetyenzisiweyo kufuneka kuhlangabezane neemfuno ze-valve medium, kwaye imveliso kufuneka ihambe kunye nesatifikethi okanye uvavanyo oluyimfuneko.
3.3.2 Iimpawu zokupakisha kufuneka zihlangabezane neemfuno zobungakanani bebhokisi etywiniweyo, kwaye akufanele itshintshwe ngokupakisha okukhulu kakhulu okanye encinci kakhulu.Ukuphakama kokupakisha kufuneka kuhlangabezane neemfuno zobungakanani bevalve, kwaye umda oqinileyo we-thermal kufuneka ugcinwe.
3.3.3 I-interface yokuzalisa kufuneka inqunywe ibe yi-oblique shape, i-angle yi-45 °, i-joints yesangqa ngasinye kufuneka igxininiswe ngu-90 ° -180 °, ubude be-filler emva kokusika kufuneka bufaneleke, kwaye kufuneka kubekho. akukho msantsa okanye ukugqithelana kujongano kwibhokisi yokuhlohla iPhenomenon.
3.3.4 Iringi yesitulo sokupakisha kunye nedlala lokupakisha kufuneka licoceke kwaye lingabi nomhlwa nabumdaka.Ibhokisi yokufaka izinto kufuneka icoceke kwaye igudileyo.Umsantsa phakathi kwentonga yesango kunye nendandatho yokuhlala kufuneka ibe ngu-0.1-0.3 mm, kwaye ubuninzi akufanele budlule i-0.5 mm.I-gland yokupakisha kunye nendandatho yokuhlala Umsantsa phakathi kwe-periphery kunye nodonga lwangaphakathi lwebhokisi lokupakisha ngu-0.2-0.3 mm, kwaye ubuninzi abukho ngaphezu kwe-0.5 mm.
3.3.5 Emva kokuba i-hinge bolts iqinisiwe, iplate yoxinzelelo kufuneka ihlale iphantsi kwaye iqiniswe ngokulinganayo.Umngxuma ongaphakathi wedlala lokupakisha kunye nepleyiti yoxinzelelo kufuneka ihambelane nokucocwa okujikeleze isiqu sevalvu.I-gland yokupakisha kufuneka icinezelwe kwigumbi lokupakisha ukuba ibe yi-1/3 yobude bayo.
3.4 Umphezulu wokutywina:
3.4.1 Umphezulu wokutywina wediski yevalve kunye nesitulo sevalve emva kokugcinwa kufuneka kungabi namabala kunye negrooves, kwaye indawo yokunxibelelana kufuneka ithathe ngaphezulu kwe-2/3 yobubanzi bokuvula idiski yevalve, kwaye umphezulu womphezulu kufuneka ufikelele ▽10 okanye Kaninzi.
3.4.2 Hlanganisa idiski yevalve yovavanyo.Emva kokuba i-disc ifakwe kwisihlalo sevalve, i-valve core kufuneka ibe yi-5-7 mm ngaphezu kwesihlalo sevalve ukuqinisekisa ukuqina.
3.4.3 Xa uhlanganisa iidiski ezisekhohlo nasekunene, qinisekisa ukuba ukuzilungisa ngokwakho kuguquguquka, kwaye isixhobo sokuchasana nokuwa kufuneka sichaneke kwaye sithembeke.
3.5.1 Umsonto we-bushing wangaphakathi kufuneka uphelele, kwaye kungabikho zibopho zaphukileyo okanye izibophelelo ezizenzekelayo, kwaye ukulungiswa ngeqokobhe langaphandle kufuneka kuthembeke kwaye kungabikho ukuxenga.
3.5.2 Onke amalungu athweleyo kufuneka angagungqi kwaye abhetyebhetye ukuze ajikeleze.Akukho ziphoso, ezifana nokuqhekeka, ukugqwala, isikhumba esinzima, njl njl kumphezulu wejacket yangaphakathi kunye nebhola yensimbi.
3.5.3 I-disc spring kufuneka ingabikho kwiintanda kunye ne-deformation, ngaphandle koko kufuneka itshintshwe enye entsha.3.5.4 Izikrufu zokulungisa kumphezulu wendongomane yokutshixa aziyi kukhululwa.I-stem nut ijikeleza ngokuguquguqukayo, kwaye i-axial clearance iqinisekisiwe kodwa ingabi ngaphezu kwe-0.35 mm.
Ixesha lokuposa: Sep-10-2021