1. Umgaqo wokusebenza wevalvu yeplagi yeDBB
Ivalvu yeplagi ye-DBB yivalvu ephindwe kabini kunye ne-bleed: ivalvu eneqhekeza elinye enee-seat sealings ezimbini, xa ikwindawo evaliweyo, inokuthintela uxinzelelo oluphakathi oluvela kwiziphelo zevalvu eziphezulu nezisezantsi ngaxeshanye, kwaye ibotshelelwe phakathi kwe-seat sealings. I-valve body cavity medium ine-relief channel.
Ulwakhiwo lwevalvu yeplagi ye-DBB lwahlulwe lwaba ngamacandelo amahlanu: ibhonethi ephezulu, iplagi, isihlalo sendandatho yokutywina, umzimba wevalvu kunye nebhonethi esezantsi.
Umzimba weplagi yevalvu yeplagi yeDBB wenziwe yiplagi yevalvu ekhonikhi kunye neediski ezimbini zevalvu ukwenza umzimba weplagi esisilinda. Iidiski zevalvu kumacala omabini zigqunywe ngerabha yokutywina, kwaye umphezulu wayo yiplagi yeconical wedge. Xa ivalvu ivuliwe, indlela yokudlulisela yenza iplagi yevalvu iphakame, kwaye iqhube iidiski zevalvu kumacala omabini ukuba zivaleke, ukuze ivalvu yediski kunye nomphezulu wokutywina umzimba wevalvu zahlulwe, kwaye emva koko iqhube umzimba weplagi ukuba ujikeleze i-90° ukuya kwindawo evulekileyo ngokupheleleyo yevalvu. Xa ivalvu ivaliwe, indlela yokudlulisela ijikelezisa ivalvu yeplagi i-90° ukuya kwindawo evaliweyo, kwaye emva koko ityhala ivalvu yeplagi ukuba yehle, iidiski zevalvu kumacala omabini ziqhagamshelane nomzantsi womzimba wevalvu kwaye zingasahambi phantsi, iplagi yevalvu ephakathi iyaqhubeka nokuhla, kwaye amacala omabini evalvu atyhalwa yiplani ethambekileyo. Idiski ihambela kumphezulu wokutywina womzimba wevalvu, ukuze umphezulu wokutywina othambileyo wediski kunye nomphezulu wokutywina womzimba wevalvu zicinezelwe ukuze kufunyanwe ukutywinwa. Isenzo sokungqubana sinokuqinisekisa ubomi benkonzo yevalvu yediski yokutywina.
2. Iingenelo zevalvu yeplagi yeDBB
Iivalvu zeplagi ze-DBB zinobunono obukhulu bokuvala. Ngenxa ye-cock emile okwe-wedge, ithrekhi emile okwe-L kunye noyilo olukhethekileyo lomqhubi, i-valve disc seal kunye nomphezulu wokuvala umzimba wevalvu zahlulwe omnye komnye ngexesha lokusebenza kwevalvu, ngaloo ndlela kuthintelwe ukuveliswa kokungqubana, kususwe ukuguguleka kwetywina kwaye kwandiswe ubomi bevalvu. Ubomi benkonzo buphucula ukuthembeka kwevalvu. Kwangaxeshanye, uqwalaselo oluqhelekileyo lwenkqubo yokunciphisa ubushushu luqinisekisa ukhuseleko kunye nokusebenza lula kwevalvu ngokuvala ngokupheleleyo, kwaye kwangaxeshanye lubonelela ngokuqinisekiswa kwi-intanethi kokuvala ngokuqinileyo kwevalvu.
Iimpawu ezintandathu zevalvu yeplagi yeDBB
1) Ivalvu yivalvu yokutywina esebenzayo, esebenzisa uyilo lwe-conical cock, ayixhomekekanga kuxinzelelo lwe-pipeline medium kunye namandla okuqinisa intwasahlobo, isebenzisa isakhiwo sokutywina kabini, kwaye yenza isitywina esizimeleyo esingavuziyo amanzi kwi-upstream ne-downstream, kwaye ivalvu ithembekile kakhulu.
2) Uyilo olulodwa lomqhubi kunye nomzila wesikhokelo omile okwe-L wahlula ngokupheleleyo isitywina sediski yevalvu kumphezulu wokutywina umzimba wevalvu ngexesha lokusebenza kwevalvu, nto leyo esusa ukuguguleka kwesitywina. I-torque yokusebenza kwevalvu incinci, ifanelekile kwiziganeko zokusebenza rhoqo, kwaye ivalvu inobomi obude benkonzo.
3) Ukugcinwa kwevalvu kwi-intanethi kulula kwaye kulula. Ivalvu ye-DBB ilula ngokwesakhiwo kwaye ingalungiswa ngaphandle kokuyisusa emgceni. Isiciko esisezantsi singasuswa ukuze kususwe isilayidi ezantsi, okanye isigqubuthelo sevalvu singasuswa ukuze kususwe isilayidi entla. Ivalvu ye-DBB incinci ngobukhulu, ilula ngobunzima, ilungele ukuqhaqhwa nokugcinwa, ilula kwaye iyakhawuleza, kwaye ayifuni zixhobo zinkulu zokuphakamisa.
4) Inkqubo eqhelekileyo yokunciphisa ubushushu yevalvu yeplagi ye-DBB ikhulula ngokuzenzekelayo uxinzelelo lwe-valve cavity xa kusenzeka uxinzelelo olugqithisileyo, nto leyo evumela ukuhlolwa kwe-intanethi ngexesha langempela kunye nokuqinisekiswa kokutywinwa kwevalvu.
5) Isalathisi sexesha langempela sendawo yevalvu, kunye nenaliti yesalathisi kwisiqu sevalvu zinokunika impendulo kwimeko yexesha langempela yevalvu.
6) Indawo engaphantsi yokukhupha amanzi amdaka ingakhupha ukungcola, kwaye ingakhupha amanzi kwindawo engaphakathi kwevalvu ebusika ukuthintela umzimba wevalvu ukuba wonakaliswe ngenxa yokwanda komthamo xa amanzi ebanda.
3. Uhlalutyo lokusilela kwevalvu yeplagi yeDBB
1) Iphini yesikhokelo yaphukile. Iphini yesikhokelo inamathele kwibracket ye-valve stem bearing bracket, kwaye elinye icala lifakwe kwi-groove yesikhokelo enomfanekiso we-L kwi-sleeve ye-valve stem. Xa i-valve stem ivula kwaye icima phantsi kwesenzo se-actuator, iphini yesikhokelo ithintelwe yi-groove yesikhokelo, ngoko ke i-valve yenziwe. Xa i-valve ivuliwe, iplagi iyaphakanyiswa ize ijikelezwe nge-90°, kwaye xa i-valve ivaliwe, ijikeleziswa nge-90° ize icinezelwe phantsi.
Isenzo sesiqu sevalvu phantsi kwesenzo sephini yesikhokelo sinokuhlukaniswa sibe sisenzo sokujikeleza esithe tye kunye nesenzo sokunyuka nokuhla ngokuthe nkqo. Xa ivalvu ivuliwe, isiqu sevalvu siqhuba umjelo omile okwe-L ukuba unyuke ngokuthe nkqo de iphini yesikhokelo ifikelele kwindawo yokujika yomjelo omile okwe-L, isantya esithe nkqo sincipha siye kwi-0, kwaye icala elithe tye likhawulezisa ukujikeleza; xa ivalvu ivaliwe, isiqu sevalvu siqhuba umjelo omile okwe-L ukuba ujikeleze kwicala elithe tye ukuya Xa iphini yesikhokelo ifikelela kwindawo yokujika yomjelo omile okwe-L, ukucotha okuthe tye kuba yi-0, kwaye icala elithe nkqo liyakhawuleza kwaye licinezele phantsi. Ke ngoko, iphini yesikhokelo iphantsi kwamandla amakhulu xa umjelo omile okwe-L ujika, kwaye kulula ukufumana amandla okuchaphazela kumacala athe tye nathe nkqo ngaxeshanye. Amaphini esikhokelo aphukileyo.
Emva kokuba iphini yesikhokelo iphukile, ivalvu ikwimeko apho iplagi yevalvu iphakanyisiwe kodwa iplagi yevalvu ayijikeleziswanga, kwaye ububanzi beplagi yevalvu buthe nkqo kububanzi bomzimba wevalvu. Umsantsa uyadlula kodwa awufikeleli kwindawo evulekileyo ngokupheleleyo. Ukusuka ekujikelezeni kwesixhobo sokudlulisa, kunokugwetywa ukuba iphini yesikhokelo sevalvu iphukile na. Enye indlela yokugweba ukwaphuka kwephini yesikhokelo kukujonga ukuba iphini yesalathisi eqiniswe ekupheleni kwesiqu sevalvu ivuliwe na xa ivalvu itshintshwa. Isenzo sokujikeleza.
2) Ukubekwa kokungcola. Ekubeni kukho umsantsa omkhulu phakathi kweplagi yevalvu kunye nomngxuma wevalvu kwaye ubunzulu bomngxuma wevalvu kwicala elithe nkqo buphantsi kunobo bombhobho, ukungcola kufakwa ezantsi komngxuma wevalvu xa ulwelo ludlula. Xa ivalvu ivaliwe, iplagi yevalvu icinezelwa phantsi, kwaye ukungcola okugciniweyo kususwa yiplagi yevalvu. Ithe tyaba ezantsi komngxuma wevalvu, kwaye emva kokubekwa kaninzi emva koko ithatyathelwe, kuyenziwa umaleko wokungcola "kwelitye le-sedimentary". Xa ubukhulu bomngxuma wokungcola budlula umsantsa phakathi kweplagi yevalvu kunye nesihlalo sevalvu kwaye ungasakwazi ukucinezelwa, kuya kuthintela ukubetheka kweplagi yevalvu. Isenzo sibangela ukuba ivalvu ingavali kakuhle okanye igqithise.
(3) Ukuvuza kwangaphakathi kwevalvu. Ukuvuza kwangaphakathi kwevalvu kukwenzakala okubulalayo kwevalvu yokuvala. Okukhona ukuvuza kwangaphakathi kuninzi, kokukhona ukuthembeka kwevalvu kuncipha. Ukuvuza kwangaphakathi kwevalvu yokutshintsha ioyile kunokubangela iingozi ezinkulu zomgangatho weoyile, ngoko ke ukukhetha ivalvu yokutshintsha ioyile kufuneka kuqwalaselwe. Umsebenzi wokufumanisa ukuvuza kwangaphakathi kwevalvu kunye nobunzima bonyango lokuvuza kwangaphakathi. Ivalvu yeplagi ye-DBB inomsebenzi olula nolula ukuwusebenzisa wokufumanisa ukuvuza kwangaphakathi kunye nendlela yonyango lokuvuza kwangaphakathi, kwaye isakhiwo sevalvu yokutywina esinamacala amabini sevalvu yeplagi ye-DBB siyenza ibe nomsebenzi othembekileyo wokunqunyulwa, ngoko ke ivalvu yokutshintsha imveliso yeoyile yombhobho weoyile ocociweyo isebenzisa kakhulu iplagi ye-DBB.
Indlela yokufumanisa ukuvuza kwangaphakathi kwevalvu yeplagi ye-DBB: vula ivalvu yokunceda ubushushu bevalvu, ukuba kukho into ephakathi ephumayo, iyayeka ukuphuma, nto leyo ebonisa ukuba ivalvu ayinakuvuza kwangaphakathi, kwaye i-outflow medium yindlela yokunciphisa uxinzelelo ekhoyo kwi-valve plug cavity; ukuba kukho ukuphuma okuphakathi okuqhubekayo, kuyabonakala ukuba ivalvu inokuvuza kwangaphakathi, kodwa akunakwenzeka ukubona ukuba leliphi icala levalvu elinokuvuza kwangaphakathi. Kuphela ngokuyichitha ivalvu apho singazi khona imeko ethile yokuvuza kwangaphakathi. Indlela yokufumanisa ukuvuza kwangaphakathi kwevalvu ye-DBB inokufumanisa ngokukhawuleza kwindawo, kwaye inokubona ukuvuza kwangaphakathi kwevalvu xa itshintsha phakathi kweenkqubo ezahlukeneyo zemveliso yeoyile, ukuze kuthintelwe iingozi zomgangatho wemveliso yeoyile.
4. Ukuqhaqha nokuhlolwa kwevalvu yeplagi yeDBB
Ukuhlolwa nokugcinwa kuquka ukuhlolwa kwi-intanethi kunye nokuhlolwa ngaphandle kwe-intanethi. Ngexesha lokugcinwa kwi-intanethi, umzimba wevalvu kunye neflange zigcinwa kumbhobho, kwaye injongo yokugcinwa ifezekiswa ngokuqhaqha izinto zevalvu.
Ukuqhaqha nokuhlolwa kwevalvu yeplagi ye-DBB kwahlulwe ngokwendlela yokuqhaqha ephezulu kunye nendlela yokuqhaqha esezantsi. Indlela yokuqhaqha ephezulu ijoliswe ikakhulu kwiingxaki ezikhoyo kwinxalenye ephezulu yomzimba wevalvu ezifana nesiqu sevalvu, ipleyiti yokugquma ephezulu, i-actuator, kunye neplagi yevalvu. Indlela yokuqhaqha ijoliswe ikakhulu kwiingxaki ezikhoyo kwisiphelo esisezantsi seevalvu, iidiski zevalvu, iipleyiti zokugquma ezisezantsi, kunye neevalvu zomsele wamanzi amdaka.
Indlela yokuqhaqha phezulu isusa i-actuator, isingxobo sesiqu sevalvu, i-sealing gland, kunye nesigqubuthelo esingaphezulu somzimba wevalvu ngokulandelelana, ize iphakamise isiqu sevalvu kunye neplagi yevalvu. Xa usebenzisa indlela ephezulu-ezantsi, ngenxa yokusikwa nokucinezelwa kwetywina lokupakisha ngexesha lokufakelwa kunye nokuguguleka kwesiqu sevalvu ngexesha lenkqubo yokuvulwa nokuvalwa kwevalvu, ayinakusetyenziswa kwakhona. Vula ivalvu kwindawo evulekileyo kwangaphambili ukuthintela iplagi yevalvu ukuba ingasuswa lula xa iidiski zevalvu kumacala omabini zicinezelwe.
Indlela yokuqhaqha ifuna kuphela ukususa isigqubuthelo esisezantsi esisezantsi ukuze kulungiswe iindawo ezifanelekileyo. Xa usebenzisa indlela yokuqhaqha ukujonga idiski yevalvu, ivalvu ayinakubekwa kwindawo evaliweyo ngokupheleleyo, ukuze kuthintelwe ukuba idiski yevalvu ayinakukhutshwa xa ivalvu icinezelwe. Ngenxa yoqhagamshelo oluhambayo phakathi kwediski yevalvu kunye neplagi yevalvu edlula kwi-groove yedovetail, isigqubuthelo esisezantsi asinakususwa ngaxeshanye xa isigqubuthelo esisezantsi sisusiwe, ukuze kuthintelwe ukuba umphezulu wokutywina wonakaliswe ngenxa yokuwa kwediski yevalvu.
Indlela yokuqhaqha ephezulu kunye nendlela yokuqhaqha esezantsi yevalvu yeDBB akufuneki zishukumise umzimba wevalvu, ngoko ke ukugcinwa kwi-intanethi kunokufezekiswa. Inkqubo yokunciphisa ubushushu imiselwe emzimbeni wevalvu, ngoko ke indlela yokuqhaqha ephezulu kunye nendlela yokuqhaqha esezantsi akufuneki zisuse inkqubo yokunciphisa ubushushu, nto leyo eyenza lula inkqubo yokulungisa kwaye iphucule ukusebenza kakuhle kokulungisa. Ukuqhaqha nokuhlola akubandakanyi umzimba oyintloko womzimba wevalvu, kodwa ivalvu kufuneka ivalwe ngokupheleleyo ukuthintela ukuba i-medium ingaphuphumi.
5. Isiphelo
Ukuxilongwa kwempazamo yevalvu yeplagi ye-DBB kuyaqikelelwa kwaye kuyenzeka rhoqo. Ngokuxhomekeke kumsebenzi wayo wokufumanisa ukuvuza kwangaphakathi olula, impazamo yangaphakathi yokuvuza inokuchongwa ngokukhawuleza, kwaye iimpawu zokusebenza zokuhlola nokulungisa ezilula nezilula ukuzisebenzisa zinokufezekisa ukugcinwa rhoqo. Ke ngoko, inkqubo yokuhlola nokulungisa iivalvu zeplagi ye-DBB itshintshile ukusuka kulondolozo lwendabuko emva kokusilela ukuya kwinkqubo yokuhlola nokulungisa edibanisa ulondolozo lwangaphambi kokuqikelela, ulondolozo lwasemva kwesiganeko kunye nolondolozo oluqhelekileyo.
Ixesha lokuthumela: Disemba-22-2022