Inkcazo ebanzi kunye nolwazi lwenkcazo yeevalvu zesango

1.Inkcazo yevalve yesango Luhlobo lwesivalo esisetyenziswa kakhulu kumbhobho. Ikakhulu idlala indima yokudibanisa kunye nokusika i-medium. Ayifanelekanga ukulawula isantya sokuqukuqela okuphakathi, kodwa inokugweba umyinge wokuqukuqela ngokonyuka nokuwa kwesiqu (umzekelo, ivalve yesitulo selastiki yokulwa nomlilo enesango lokuvula nokuvala). Xa kuthelekiswa nezinye iivalve, i-valve yesango inoluhlu olubanzi lwesicelo soxinzelelo, ubushushu, i-caliber kunye nezinye iimfuno. 2. ISakhiwo seSango seSango Iivalve zesango zinokuhlulwa zibe luhlobo lwe-wedge, uhlobo olulodwa lwesango, uhlobo lwesango eli-elastic, uhlobo lwesango eliphindwe kabini kunye nohlobo lwesango elihambelanayo ngokwesakhiwo sazo sangaphakathi. Ngokomahluko wenkxaso yesikhondo, inokohlulwa ibe ivelufa yesango evulekileyo kunye nevalve yesango elimnyama. 3. Umzimba wevalvu kunye nembaleki Ubume bomzimba wevalvu yesango bumisela uqhagamshelwano phakathi komzimba wevalvu kunye nombhobho, umzimba wevalvu kunye nesivalo sevalvu. Ngokweendlela zokuvelisa, kukho ukuphosa, ukubumba, ukubunjwa, ukuphosa kunye ne-welding, kunye ne-pipe plate welding. Umzimba wevalvu wokwenza uphuhlisele kwicalibre enkulu, ngelixa umzimba wevalve yokusa ukhula ngokuthe chu ukuya kwikalibha encinci. Naluphi na uhlobo lomzimba wevalve yesango lunokwenziwa ngenkohliso okanye ukuphoswa, ngokuxhomekeke kwiimfuno zomsebenzisi kunye nendlela yokuvelisa eyeyomenzi. Indlela yokuhamba yomzimba wevalve yesango inokwahlulwa ibe ziindidi ezimbini: uhlobo olupheleleyo lwe-diameter kunye nohlobo oluncitshisiweyo lwe-diameter. Idayamitha yendlela yokuqukuqela ngokusisiseko iyafana nedayamitha yegama levalve, kwaye idiamitha encinci yendlela yokuqukuqela kunomlinganiselo oqhelekileyo wevalve ibizwa ngokuba luhlobo lwedayamitha encitshisiweyo. Kukho iindidi ezimbini zeemilo zokushwabana: ukushwabana okufanayo kunye nokushwabana okufanayo. Ijelo le tapered kukuncitshiswa kwedayamitha engekho yunifomu. I-aperture ye-inlet end yolu hlobo lwevalve ngokusisiseko iyafana nedayamitha ye-nominal, kwaye emva koko iyancipha ngokuthe ngcembe ukuya kubuncinci kwisihlalo. Iingenelo zokusebenzisa umgijimi we-shrinkage (nokuba i-conical tube non-uniform shrinkage okanye i-uniform shrinkage) ilingana nobukhulu bevalve, enokunciphisa ubungakanani besango, ukuvula kunye nokuvala amandla kunye nomzuzu. Ukungalungi kukuba ukwanda kokumelana nokuhamba, ukuhla koxinzelelo kunye nokusetyenziswa kwamandla kwanda, ngoko umngxuma wokucutha akufanele ube mkhulu kakhulu. Ukunciphisa i-tapered diameter ye-tapered, umlinganiselo we-diameter yangaphakathi yesihlalo ukuya kwi-diameter ebizwa ngokuba yi-0.8-0.95. Iivalvu zokunciphisa ezinedayamitha encinane engaphantsi kwama-250mm ngokubanzi zinesangqa esingaphakathi sesihlalo esinye igiya esezantsi kunomlinganiselo oqhelekileyo; Iivalvu zokunciphisa ezinedayamitha yegama elilingana okanye ngaphezulu kwe-300 mm ngokubanzi zinedayamitha yangaphakathi yesitulo ezimbini ezingaphantsi kwedayamitha yesiqhelo. 4. Ukushukuma kweevalvu zesango Xa ivalve yesango ivala, indawo yokutywina inokutywinwa kuphela ngoxinzelelo oluphakathi, oko kukuthi, kuphela ngoxinzelelo oluphakathi ukucinezela umphezulu wokutywina wesango ukuya kwisihlalo kwelinye icala. qinisekisa umgangatho wokutywina, onokuzitywina. Uninzi lweevalve zesango zinyanzeliswa ukuba zitywinwe, oko kukuthi, xa i-valve ivala, isango kufuneka linyanzeliswe esihlalweni ngamandla angaphandle ukuze kuqinisekiswe indawo yokutywina. Imo yentshukumo: Isango levalve yesango lihamba ngendlela ethe ngqo enesiqu, ekwaziwa ngokuba yivalve yesango elivulekileyo. Ngokuqhelekileyo kukho imicu ye-trapezoidal kwintonga yokuphakamisa. Ngokusebenzisa i-nut phezulu kwevalve kunye ne-groove yesikhokelo kumzimba wevalve, intshukumo ejikelezayo iguqulwa ibe yintshukumo yomgca, oko kukuthi, i-torque yokusebenza iguqulwa ibe yi-thrust yokusebenza. Xa uvula i-valve, xa isango lokuphakamisa ukuphakama lilingana no-1: 1 amaxesha ububanzi be-valve, i-flow passage ivuleke ngokupheleleyo, kodwa xa isebenza, esi sikhundla asikwazi ukujongwa. Ekusetyenzisweni okubonakalayo, i-vertex yesikhondo sevalve isetyenziswa njengophawu, oko kukuthi, indawo ekumi kuyo isikhondo sevalve engashukumiyo isetyenziswa njengendawo evulekileyo epheleleyo. Ukuze kuqwalaselwe into yokutshixa yokutshintsha kweqondo lobushushu, ivalve idla ngokuvulelwa kwindawo ye-vertex kwaye iguqulelwe kwi-1/2-1 ukujika njengendawo yevalve evuleke ngokupheleleyo. Ngoko ke, indawo evulekileyo epheleleyo yevalve inqunywe yindawo yesango (okt stroke). Ezinye iintonga zevalve yesango zisetwe kwipleyiti yesango. Ukujikeleza kwevili lesandla kuqhuba isikhondo ukuba sijikeleze, esiphakamisa ipleyiti yesango. Olu hlobo lwevalve lubizwa ngokuba ivelufa yesango ejikelezayo okanye ivelufa yesango elimnyama. 5. Izibonelelo zokusebenza kweevalve zesango 1. Ukuxhatshazwa kwe-valve fluid kuncinci, kuba umzimba we-valve wesango uqondile, ukuhamba okuphakathi akutshintshi indlela, ngoko ke ukuchasana kokuhamba kuncinci kunezinye iivalve; 2. Ukusebenza kokutywina kungcono kunevalve yeglowubhu, kwaye ukuvula nokuvala kusindisa abasebenzi ngakumbi kunevalve yeglowubhu. 3. Uluhlu olubanzi lwezicelo, ngaphezu kwe-steam, i-oyile kunye neminye imithombo yeendaba, kodwa ifanelekile kwi-medium equkethe i-granular solids kunye ne-viscosity ephezulu, ifanelekile ukusetyenziswa njenge-valve ye-vent kunye ne-vacuum system valves; 4. Ivalve yesango yivalve ene-double flow direction, engathintelwanga yi-flow direction of medium. Ngoko ke, ivalve yesango ifanelekile kwimibhobho apho i-medium inokutshintsha indlela yokuhamba, kwaye kulula ukuyifaka. 6. Ukusilela ekusebenzeni kwevalve yesango 1. Ubungakanani boyilo oluphezulu kunye nexesha elide lokuqala kunye nokuvala. Xa uvula, kuyimfuneko ukuphakamisa i-valve plate kwindawo ephezulu ye-valve, kwaye xa uvala, kuyimfuneko ukulahla zonke iiplate zevalve kwisihlalo sevalve, ngoko ke ukuvuleka kunye nokuvala i-valve plate kukhulu. kwaye ixesha lide. 2. Ngenxa yengxabano phakathi kweendawo ezimbini zokutywinwa kwepleyiti yevalve kunye nesihlalo sevalve kwinkqubo yokuvula nokuvala, indawo yokutywina kulula ukuyikrwempa, enempembelelo ekusebenzeni kokutywinwa kunye nobomi benkonzo, kwaye akukho lula. ukugcina. 7. Ukuthelekisa ukusebenza kweevalvu zesango ezinezakhiwo ezahlukeneyo 1. Uhlobo lwe-Wedge ivelufa yesango enye A. Isakhiwo silula kunevalve yesango elastiki. B. Kubushushu obuphezulu, ukusebenza kokutywina akufani naleyo yevalve yesango elastiki okanye ivalve yesango eliphindwe kabini. C. Ilungele iqondo lobushushu eliphakathi ekulula ukucoka. 2. Ivalve yesango elelastiki A. Luhlobo olukhethekileyo lwevalve yesango enye yeweji. Xa kuthelekiswa ne-valve yesango le-wedge, ukusebenza kokutywinwa kungcono kwiqondo lokushisa eliphezulu, kwaye isango akulula ukuba lifakwe emva kokufudumeza. B. Ifanelekile kwi-steam, i-high-high-high-high-oil products kunye ne-oyile kunye ne-gas media, kunye neendawo zokutshintsha rhoqo. C. Ayilungelanga ukuphekwa ngokulula. 3. Iivalvu zesango eliphindwe kabini A. Ukusebenza kokutywina kungcono kunevalve yesango leweji. Xa i-engile ethambekele yokutywina umphezulu kunye nesitulo esifanelekileyo singachanekanga kakhulu, isenomsebenzi wokutywina olungileyo. B. Emva kokuba indawo yokutywinwa kwesango igugile, i-pad yentsimbi ephantsi kwendawo ephezulu ye-spherical surface ingatshintshwa kwaye isetyenziswe ngaphandle kokugubungela kunye nokugaya indawo yokutywina. C. Ifanele umphunga, iimveliso ze-oyile eziphezulu kunye ne-oyile kunye ne-gas media, kunye neendawo zokutshintsha rhoqo. D. Ayilungelanga indawo yokupheka elula. 4. Iivalvu zesango ezinxuseneyo A. Ukusebenza kokutywina kubi kunezinye iivalvu zesango. B. Ifanelekile phakathi kunye nobushushu obuphantsi kunye noxinzelelo. C. Ukucutshungulwa kunye nokugcinwa kokutywinwa kwendawo yesango kunye nesihlalo kulula kunezinye iintlobo zeevalvu zesango. 8. Izilumkiso zoFakelo lweValve yeSango 1. Ngaphambi kofakelo, jonga igumbi levalve kunye nomgangatho wokutywina. Akukho kungcola okanye isanti evumelekileyo ukuba ibambelele. 2. Iibholithi kwindawo nganye yokudibanisa kufuneka iqiniswe ngokulinganayo. 3. Ukujonga indawo yokuzalisa kufuna ukunyanzeliswa, kungekhona nje ukuqinisekisa ukutywinwa kwe-filler, kodwa nokuqinisekisa ukuba isango livula ngokuguquguqukayo. 4. Ngaphambi kokufaka iivalve zesango zentsimbi ezibunjiweyo, abasebenzisi kufuneka bajonge uhlobo lwevalve, ubungakanani boqhagamshelo kunye nesikhokelo sokuhamba kwemidiya ukuqinisekisa ukuhambelana neemfuno zevalvu. 5. Xa ufaka iivalve zentsimbi ekhandiweyo, abasebenzisi kufuneka bagcine isithuba esiyimfuneko sokuqhuba ivalvu. 6. I-wiring yesixhobo sokuqhuba iya kwenziwa ngokuhambelana nomzobo wesiphaluka. 7. Iivalvu zesango zentsimbi ezibunjiweyo kufuneka zigcinwe rhoqo. Akukho ukungqubana okungahleliweyo kunye nokukhutshwa kuvunyelwe ukuba kuchaphazele ukutywinwa.