1. Umgaqo osebenzayo we-DBB plug valve
I-valve yeplagi ye-DBB yibhloko ephindwe kabini kunye ne-valve yokuphuma kwegazi: i-valve yesiqwenga esisodwa esineendawo zokutywina ezimbini zokuhlala, xa ikwindawo evaliweyo, inokuthintela uxinzelelo oluphakathi ukusuka phezulu kunye neziphelo ezisezantsi zevalve ngaxeshanye, kwaye ibotshelelwe phakathi kwemiphezulu yokutywina yesitulo Isivalo somzimba wevalvu sinomjelo wokukhulula.
Ubume be-valve yeplagi ye-DBB yahlulwe yangamacandelo amahlanu: ibhonethi ephezulu, iplagi, isihlalo sokutywina, umzimba wevalvu kunye nebhonethi esezantsi.
Umzimba weplagi we-DBB iplagi yeplagi yenziwe ngeplagi yevalve ekhonkoni kunye neediski ezimbini zevalve ukwenza umzimba weplagi oyicylindrical. Iidiski zevalve kumacala omabini ziqatywe ngemiphezulu yokutywina yerabha, kwaye umbindi yiplagi ye-conical wedge. Xa ivalve ivulwa, indlela yothumelo yenza ukuba iplagi yevalve inyuke, kwaye iqhube iidiski zevalve kumacala omabini ukuba zivale, ukuze idisk yevalve yesitywina kunye nendawo yokutywina yomzimba iyahlulwa, kwaye emva koko iqhube iplagi yomzimba ukujikeleza 90. ° ukuya kwindawo evuleke ngokupheleleyo yevalvu. Xa ivalve ivaliwe, indlela yokuhambisa ijikelezisa iplagi yevalve 90 ° ukuya kwindawo evaliweyo, kwaye emva koko ityhale iplagi yevalve ukuba yehle, iidiski zevalve kumacala omabini zinxibelelana nomzantsi womzimba wevalve kwaye azisashukumi ezantsi, embindini. iplagi yevalve iyaqhubeka nokuhla, kwaye amacala amabini evalve atyhalwa yinqwelomoya ethambekele. Idiski ishukuma iye kumphezulu wokutywina womzimba wevalvu, ukuze indawo yokutywina ethambileyo yediski kunye nomphezulu wokutywina womzimba wevalvu zinyanzelwe ukufezekisa ukutywinwa. Isenzo se-friction sinokuqinisekisa ubomi benkonzo ye-valve disc seal.
2. Izinto eziluncedo ze-DBB plug valve
Iivalvu zeplagi zeDBB zinemfezeko yokutywina ephezulu kakhulu. Ngokusebenzisa umqhagi owahlukileyo omile okwengca, umkhondo omile okwe-L kunye noyilo olukhethekileyo lwabaqhubi, idiskhi yevalve yesitywina kunye nendawo yokutywina yomzimba iyahlulwa omnye komnye ngexesha lokusebenza kwevalve, ngaloo ndlela kuthintelwa ukuvelisa ukungqubana, ukuphelisa ukunxitywa kwetywina. kunye nokwandisa ubomi bevalvu. Ubomi benkonzo buphucula ukuthembeka kwevalve. Ngexesha elifanayo, ukucwangciswa okusemgangathweni kwenkqubo yokunceda i-thermal iqinisekisa ukhuseleko kunye nokulula ukusebenza kwe-valve ngokuvala ngokupheleleyo, kwaye kwangaxeshanye kunika ukuqinisekiswa kwe-intanethi ye-tight-off ye-valve.
Iimpawu ezintandathu ze-DBB plug valve
1) Ivalve yivalve yokutywina esebenzayo, eyamkela uyilo lweqhude, ayithembeli kuxinzelelo lwemibhobho ephakathi kunye nentwasahlobo yangaphambi kokuqina, ithatha ubume bokutywina kabini, kwaye yenze itywina elizimeleyo lokuvuza kwe-zero. kuba phezulu nasezantsi, kwaye ivalve inokuthembeka okuphezulu.
2) Uyilo olulodwa lomqhubi kunye nomzila wesikhokelo owenziwe ngu-L wahlula ngokupheleleyo i-valve disc seal ukusuka kwindawo yokutywina umzimba wevalve ngexesha lokusebenza kwevalve, ukuphelisa ukuvala uphawu. I-valve yokusebenza i-torque encinci, ifanelekile kwizihlandlo zokusebenza rhoqo, kwaye i-valve inobomi obude benkonzo.
3) Ukugcinwa kwe-intanethi ye-valve kulula kwaye kulula. I-valve ye-DBB ilula kwisakhiwo kwaye inokulungiswa ngaphandle kokuyisusa kumgca. Isigqubuthelo esisezantsi sinokususwa ukususa isilayidi ezantsi, okanye isigqubuthelo sevalvu singasuswa ukususa isilayidi phezulu. I-valve ye-DBB incinci ngobukhulu, ilula ngesisindo, ilungele ukuchithwa kunye nokugcinwa, ilula kwaye ikhawuleza, kwaye ayifuni izixhobo ezinkulu zokuphakamisa.
4) Inkqubo eqhelekileyo yokunceda i-thermal ye-DBB plug valve ikhupha ngokuzenzekelayo uxinzelelo lwe-valve cavity xa kwenzeka uxinzelelo olugqithiseleyo, okwenza ukuba ukuhlolwa kwexesha langempela kwi-intanethi kunye nokuqinisekiswa kokutywinwa kwevalve.
I-5) Isibonakaliso sexesha langempela lendawo yevalve, kunye nenaliti yesalathisi kwi-valve stem inokunika ingxelo ngexesha langempela le-valve.
6) Umbhobho ongaphantsi welindle unokukhupha ukungcola, kwaye unokukhupha amanzi kwivalve yevalve ebusika ukukhusela umzimba wevalve ukuba wonakaliswe ngenxa yokwandiswa komthamo xa amanzi engumkhenkce.
3. Uhlalutyo lokungaphumeleli kwe-DBB plug valve
1) Iphini yesikhokelo yaphukile. Isikhonkwane sesikhokelo sigxininiswe kwisibiyeli esinesiqu sevalve, kwaye esinye isiphelo sinemikhono kwigroove yesikhokelo esime okwe-L kumkhono wesikhondo sevalve. Xa i-valve stem ivula kwaye icima phantsi kwesenzo se-actuator, i-pin yesikhokelo ithintelwe yi-groove yesikhokelo, ngoko i-valve yenziwe. Xa i-valve ivuliwe, iplagi iphakanyisiwe kwaye ijikelezwe ngu-90 °, kwaye xa i-valve ivaliwe, ijikelezwe ngu-90 ° kwaye icinezele phantsi.
Isenzo sesikhondo sevalve phantsi kwesenzo sesikhonkwane sesikhokelo sinokubola kwisenzo sokujikeleza esithe tye kunye nesenzo sokunyuka nokuhla okuthe nkqo. Xa i-valve ivuliwe, i-valve stem iqhubela i-groove efana ne-L ukuba iphakame ngokuthe nkqo de i-pin yesikhokelo ifike kwindawo yokuguqula i-groove efana ne-L, isantya esithe nkqo siyancipha ukuya kwi-0, kwaye ulwalathiso oluthe tye lukhawuleza ukujikeleza; xa ivalve ivaliwe, i-valve stem iqhubela i-groove emise okwe-L ukujikeleza kwicala elithe tye ukuya Xa i-pin yesikhokelo ifikelela kwindawo yokujika ye-groove efana ne-L, i-deceleration ethe tye iba yi-0, kwaye ulwalathiso oluthe nkqo lukhawuleza kwaye lucinezele. phantsi. Ke ngoko, isikhonkwane sesikhokelo siphantsi kwawona mandla makhulu xa umqolo omile okwe-L ujika, kwaye ikwayeyona ilula ukufumana amandla empembelelo kumkhombandlela othe tye nothe nkqo ngaxeshanye. Izikhonkwane zesikhokelo ezaphukileyo.
Emva kokuba isikhonkwane sesikhokelo saphukile, ivalve ikwimo apho iplagi yevalve iphakanyisiwe kodwa iplagi yevalve ayizange ijikelezwe, kwaye idiameter yeplagi yevalve iperpendicular kububanzi bomzimba wevalvu. Umsantsa uyadlula kodwa uyasilela ukufikelela kwindawo evuleke ngokupheleleyo. Ukususela kumjikelezo wendlela edlulayo, kunokugwetywa ukuba iphini yesikhokelo sevalve yaphukile. Enye indlela yokugweba ukuphulwa kwepini yesikhokelo kukuqwalasela ukuba i-pin yesalathisi esisigxina ekupheleni kwesigxina se-valve ivuliwe xa i-valve ishintshiwe. Isenzo sokujikeleza.
2) Ukubekwa kokungcola. Kuba kukho umsantsa omkhulu phakathi kweplagi yevalvu kunye nomngxuma wevalvu kwaye ubunzulu bevalve yevalvu kwicala elithe nkqo bungaphantsi kunobo bombhobho, ukungcola kufakwa emazantsi omqolo wevalvu xa ulwelo ludlula. Xa i-valve ivaliwe, iplagi yevalve icinezelwe phantsi, kwaye ukungcola okufakwe kwi-deposit kususwa ngeplagi yevalve. Ithe tyaba emazantsi embombo yevalve, kwaye emva kokudityaniswa okuninzi kwaye emva koko yacandwa, umaleko wokungcola "kwelitye le-sedimentary" lenziwa. Xa ubukhulu bomgangatho wokungcola budlula i-gap phakathi kweplagi yevalve kunye nesihlalo sevalve kwaye ingasakwazi ukunyanzeliswa, iya kuthintela ukubetha kweplagi yevalve. Isenzo sibangela ukuba ivalve ingavali kakuhle okanye igqithe.
(3) Ukuvuza kwangaphakathi kwevalve. Ukuvuza kwangaphakathi kwevalve kukulimala okubulalayo kwevalve yokuvala. Okukhona ukuvuza kwangaphakathi, kokukhona kusezantsi ukuthembeka kwevalve. Ukuvuza kwangaphakathi kwevalve yokutshintsha i-oyile kunokubangela iingozi ezinzulu zomgangatho we-oyile, ngoko ke ukhetho lwevalve yokutshintsha i-oyile kufuneka luqwalaselwe. Umsebenzi wokufumanisa ukuvuza kwangaphakathi kwevalve kunye nobunzima bonyango lwangaphakathi lokuvuza. I-valve yeplagi ye-DBB inomsebenzi olula kunye nokulula ukuwenza umsebenzi wokubona ukuvuza kwangaphakathi kunye nendlela yonyango yangaphakathi yokuvuza, kunye nesakhiwo sevalve yokutywina kabini ye-DBB plug valve yenza ukuba ibe nomsebenzi othembekileyo wokusikwa, ngoko ke ioli. Ivalve yokutshintsha imveliso yombhobho we-oyile esulungekisiweyo ikakhulu isebenzisa iplagi ye-DBB.
Ivalve ye-DBB yeplagi yeplagi yangaphakathi yokubona indlela yokuvuza: vula ivalve yokukhulula ivalve, ukuba i-valve ethile iyaphuma, iyayeka ukuphuma, nto leyo engqina ukuba ivalve ayinakuvuza kwangaphakathi, kwaye i-outflow medium yindlela yokunciphisa uxinzelelo ekhoyo kwi-valve plug cavity. ; ukuba kukho ukuphuma okuphakathi okuqhubekayo, kungqinwa ukuba i-valve inokuvuza kwangaphakathi, kodwa akunakwenzeka ukufumanisa ukuba yeyiphi icala levalve ukuvuza kwangaphakathi. Kuphela ngokuqhaqha i-valve sinokukwazi imeko ethile yokuvuza kwangaphakathi. Indlela yokufumanisa ukuvuza kwangaphakathi kwevalve ye-DBB inokuqonda ukubonwa ngokukhawuleza kwendawo, kwaye inokubona ukuvuza kwangaphakathi kwevalve xa utshintshela phakathi kweenkqubo ezahlukeneyo zemveliso yeoli, ukuze kuthintelwe iingozi zemveliso yeoli.
4. Ukudilizwa kunye nokuhlolwa kwevalve yeplagi yeDBB
Ukuhlola kunye nokugcinwa kubandakanya ukuhlolwa kwe-intanethi kunye nokuhlolwa ngaphandle kwe-intanethi. Ngexesha lokugcinwa kwe-intanethi, i-valve yomzimba kunye ne-flange zigcinwa kumbhobho, kwaye injongo yokugcinwa kwayo iphunyezwa ngokudibanisa amacandelo e-valve.
Ukutshatyalaliswa kunye nokuhlolwa kwe-valve yeplagi ye-DBB ihlulwe kwindlela ephezulu yokuqhaqha kunye nendlela ephantsi yokuqhaqha. Indlela yokuqhaqha ephezulu ijolise ikakhulu kwiingxaki ezikhoyo kwindawo ephezulu yevalve yomzimba njengesiqu sevalve, ipleyiti yesigqubuthelo esiphezulu, i-actuator, kunye neplagi yevalve. Indlela yokuqhawula ijolise ikakhulu kwiingxaki ezikhoyo kwisiphelo esisezantsi sezitywina, iidiskhi zevalvu, iipleyiti ezisezantsi zokugquma, kunye neevalve zelindle.
Indlela yokuqhawula ukuya phezulu isusa i-activator, umkhono wesikhondo sevalve, idlala lokutywina, kunye nesigqubuthelo esingaphezulu somzimba wevalvu ngokulandelelanayo, emva koko iphakamise isikhondo sevalvu kunye neplagi yevalvu. Xa usebenzisa indlela ephezulu, ngenxa yokusikwa kunye nokunyanzeliswa kwesitywina sokupakisha ngexesha lofakelo kunye nokugqoka kunye nokukrazula kwe-valve stem ngexesha lokuvula kunye nenkqubo yokuvala, ayikwazi ukuphinda isetyenziswe. Vula ivalve kwindawo evulekileyo kwangaphambili ukukhusela iplagi yevalve ekususweni lula xa iidiski zevalve kumacala omabini zixinzelelwe.
Indlela yokuqhawula idinga kuphela ukususa isigqubuthelo esisezantsi esisezantsi ukuze kulungiswe iindawo ezihambelanayo. Xa usebenzisa indlela yokuqhaqha ukujonga i-disc ye-valve, i-valve ayikwazi ukufakwa kwindawo evaliweyo ngokupheleleyo, ukwenzela ukuba ugweme i-disc ye-valve ayikwazi ukukhutshwa xa i-valve icinezelwe. Ngenxa yoxhulumaniso olushukumayo phakathi kwediski yevalve kunye neplagi yevalve kwi-dovetail groove, isigqubuthelo esisezantsi asinakususwa kanye xa isigqubuthelo esisezantsi sisusiwe, ukuze kuthintelwe umphezulu wokutywina ukuba wonakaliswe ngenxa yokuwa kwevalve. idiski.
Indlela ephezulu yokuqhaqha kunye nendlela ephantsi yokuchithwa kwe-valve ye-DBB ayifuni ukuhambisa umzimba we-valve, ngoko ke ukugcinwa kwe-intanethi kunokufezekiswa. Inkqubo yokunciphisa ubushushu ibekwe kumzimba we-valve, ngoko ke indlela ephezulu yokuqhawula kunye nendlela ephantsi yokutshatyalaliswa ayifuni ukukhupha inkqubo yokunciphisa ubushushu, eyenza lula inkqubo yokugcina kunye nokuphucula ukusebenza kakuhle. Ukuqhawula kunye nokuhlola akubandakanyi umzimba oyintloko womzimba we-valve, kodwa i-valve kufuneka ivalwe ngokupheleleyo ukukhusela i-medium ekuphuphumeni.
5. Isiphelo
Ukuxilongwa kwempazamo yevalve yeplagi yeDBB kuqikelelwa kwaye ngamaxesha athile. Ngokuxhomekeke kumsebenzi wayo ofanelekileyo wokukhangela ukuvuza kwangaphakathi, impazamo yangaphakathi yokuvuza inokufunyaniswa ngokukhawuleza, kwaye kulula kwaye kulula ukuyisebenzisa kunye neempawu zokusebenza zokuhlola zinokuqonda ukugcinwa kwamaxesha athile. Ngoko ke, inkqubo yokuhlola kunye nokugcinwa kwee-valve zeplagi ze-DBB nazo zitshintshile ukusuka kwisiqhelo emva kokungaphumeleli ukugcinwa kwi-multi-directional yokuhlola kunye nokugcinwa kwenkqubo edibanisa ukugcinwa kwangaphambili, ukugcinwa kwesiganeko kunye nokugcinwa rhoqo.
Ixesha lokuposa: Dec-22-2022