Ivalve yesango kunye nevalve yesitopcock

A stopcockivelufa yi [1] ivalve ethe tye evula kwaye ivale ngokukhawuleza, kwaye isetyenziswa ngokuqhelekileyo kumajelo eendaba namasuntswana amisiweyo ngenxa yesiphumo sokusula intshukumo phakathi kwemiphezulu yetywina Screw kunye nokhuseleko olupheleleyo ekudibaneni nendawo ehambayo xa ivulwe ngokupheleleyo. Olunye uphawu olubalulekileyo kukuba kulula ukuziqhelanisa nolwakhiwo lweetshaneli ezininzi, ukuze ivalve enye ifumane ezimbini, ezintathu, okanye ezine ezahlukeneyo zokuqukuqela. Oku kwenza kube lula ukuyilwa kwenkqubo yemibhobho, kunciphisa inani leevalvu ezisetyenzisiweyo, kwaye kuncitshiswe uqhagamshelo olufunekayo kwisixhobo.

Isebenza njani iiValves ngestopcockimizimba enemingxuma ephumelayo njengamalungu avulayo navalayo. Umzimba weplagi ujikeleza kunye nesiqu [2] ukuphumeza isenzo sokuvula nokuvala. Ivalve encinci, engapakishwanga, iplagi ikwabizwa ngokuba yi "cocker". Umzimba weplagi wevalve yeplagi ubukhulu becala yicone (kukwakho necylindrical body), edityaniswa nomphezulu oyiconical orifice womzimba wevalvu ukwenza iperi yokutywina. Ivalve yeplagi lolona hlobo lokuqala lwevalvu esetyenzisiweyo, enesakhiwo esilula, ukuvula nokuvala ngokukhawuleza, kunye nokumelana nolwelo oluphantsi. Iivalve zeplagi eziqhelekileyo zixhomekeke kuqhagamshelwano oluthe ngqo phakathi komzimba weplagi yentsimbi egqityiweyo kunye nomzimba wevalve ukutywinwa, ngoko ukutywinwa kubi, ukuvulwa nokuvala amandla kukhulu, kulula ukunxiba, kwaye ngokuqhelekileyo kunokusetyenziswa kuphela kuxinzelelo oluphantsi (kungekho ngaphezu kwe-megapascal eyi-1) kunye nezihlandlo ezincinci (ngaphantsi kwe-100 mm).

Clasify

Ngokwefomu yesakhiwo, inokwahlulwa ibe ziindidi ezine: ivalve yeplagi eqinileyo, ivalve yeplagi yokuzitywina, ivalve yeplagi kunye nevalve yeplagi efakwe i-oyile. Ngokwefomu yetshaneli, inokwahlulwa ibe ziindidi ezintathu: ivalve yeplagi ethe tye, i-valve yendlela-ntathu yokumisa i-valve kunye ne-valve yeplagi eneendlela ezine. Kukwakho neevalvu zeplagi zetyhubhu.

Iivalvu zokuplaga zihlelwa ngokusetyenziswa kubandakanywa: iivalvu zeplagi ezithambileyo, i-oyile-lubricated hard seal plug valves, iivalvu zeplagi zepoppet, iindlela ezintathu kunye ne-four-way plug valves.

Iingenelo

1. Ivalve yeplagi isetyenziselwa ukusebenza rhoqo, kwaye ukuvulwa nokuvala kukhawuleza kwaye kulula.

2. Ukuxhathisa ulwelo lwevalve yeplagi kuncinci.

3. Ivalve yeplagi inesakhiwo esilula, ubungakanani obuncinci, ubunzima obulula kunye nokugcinwa lula.

4. Ukusebenza kakuhle kokutywinwa.

5. Ayikhawulelwanga ngumkhombandlela wofakelo, kwaye ulwalathiso lokuhamba kwe-medium lunokuba lungqongqo.

6. Akukho ngcangcazelo, ingxolo ephantsi.

Iivalvu zesango ezithambileyo

Ivalve yesango elithambileyo, ivalve yeshishini, ivalve yesango elithambileyo lokuvula kunye neendawo zokuvala ziinkunzi zeegusha, icala lenkunzi yegusha eliya ngakulo lijonge kwicala lolwelo, ivalve yesango inokuvulwa ngokupheleleyo kwaye ivalwe, ayinakulungelelaniswa kwaye icinezelwe. Inkunzi yegusha inemigangatho emibini yokutywina, eyona ndlela ixhaphakileyo isetyenziswa ivelufa yesango imiphezulu emibini yokutywina yenza i-wedge, i-engile ye-wedge iyahluka ngokweparamitha zevalvu, i-diameter yegama yi-DN50~DN1200, ubushushu bokusebenza: ≤200°C.

Umgaqo wemveliso

Ipleyiti yesango le wedgeivalv yesangoe inokwenziwa ibe yinto epheleleyo, ebizwa ngokuba lisango eliqinileyo; Isenokwenziwa kwakhona ibe yinkunzi yegusha enokuvelisa isixa esincinci soguqulo ukuphucula ukwenziwa kwayo kwaye yenze ukutenxa kwe-engile yomphezulu wokutywina kwinkqubo yokucubungula, ebizwa ngokuba yi-elastic ram.

Itywina elithambileyoiivalve zesangozahlulwe zibe ziindidi ezimbini: intonga evulekileyoivalve yesango elithambileyonentonga emnyama ethambileyo itywinaivalve yesango. Ngokuqhelekileyo kukho intambo ye-trapezoidal kwintonga yokunyusa, etshintsha intshukumo ejikelezayo ibe yintshukumo yomgca ngokusebenzisa i-nut phakathi kwenkunzi yegusha kunye ne-groove yesikhokelo kumzimba wevalve, oko kukuthi, i-torque yokusebenza kwi-thrust yokusebenza. Xa i-valve ivuliwe, xa ukuphakama kwenkunzi yegusha ilingana no-1: 1 amaxesha ububanzi be-valve, ukuhamba kwamanzi akuthinteki ngokupheleleyo, kodwa esi sikhundla asikwazi ukubeka iliso ngexesha lokusebenza. Ekusetyenzisweni kwangempela, iphawulwe yi-vertex yesiqu, oko kukuthi, isikhundla esingenakuvulwa, njengendawo evulekile ngokupheleleyo. Ukuze uphendule ngokutshixa ngenxa yokutshintsha kweqondo lokushisa, ngokuqhelekileyo ivulwa kwindawo ephezulu kwaye iphinde ibuyiselwe umva 1/2-1 ukujika njengendawo yevalve evuleke ngokupheleleyo. Ngoko ke, indawo evuleke ngokupheleleyo ivelufa imiselwa yindawo emile ngayo inkunzi yegusha (oko kukuthi, ukubetha). Olu hlobo lwevalve kufuneka lufakwe ngokubanzi ngokuthe tye kumbhobho.

IiMfuneko ngokuBanzi

1. Iinkcukacha kunye neendidi zeiivalve zesango elithambileyokufuneka ihlangabezane neemfuno zamaxwebhu oyilo lombhobho.

2. Imodeli yevalve yesango elithambileyo kufuneka ibonise iimfuno zomgangatho wesizwe ngokwenani layo. Ukuba ngumgangatho weshishini, inkcazo efanelekileyo yomzekelo kufuneka iboniswe.

3. Uxinzelelo lokusebenza lweivalve yesango elithambileyoifuna uxinzelelo olusebenzayo lombhobho ≥, ngaphandle kokuchaphazela ixabiso, uxinzelelo olusebenzayo olunokuthi ivalve luthwale kufuneka lube lukhulu kunoxinzelelo olusebenzayo lombhobho, kwaye naliphi na icala levalve yesango elithambileyo kufuneka likwazi ukumelana namaxesha angama-1.1 ixabiso loxinzelelo lokusebenza lwevalve ngaphandle kokuvuza;

4. Umgangatho wokwenziwa kweivalve yesango elithambileyokufuneka ibonise inombolo yomgangatho kazwelonke esekelwe kuyo, kwaye ukuba ngumgangatho weshishini, uxwebhu lweshishini kufuneka luqhotyoshelwe kwimvumelwano yokuthengwa kweempahla neenkonzo.

Okwesibini, izinto zevalve yesango elithambileyo

1. Izinto eziphathekayo zomzimba we-valve kufuneka zibe yintsimbi, intsimbi, insimbi engenasici, i-316L, kunye nebakala kunye neyona datha yovavanyo lwenyama kunye neekhemikhali zentsimbi ephosiweyo kufuneka iboniswe.

2. I-stem material kufuneka izame i-stainless steel stem (2CR13), kunye ne-valve-diameter enkulu kufuneka ibe yintsimbi engenasici.

3. I-nut yenziwe nge-aluminium yobhedu okanye i-aluminium ephosiweyo yobhedu, kwaye ubunzima kunye namandla bukhulu kunoko kwe-valve stem.

4. Ukuqina kunye nokomelela kwe-stem bushing material akufunekanga ibe nkulu kune-valve stem, kwaye kungabikho ukubola kwe-electrochemical kunye nesiqu sevalve kunye nomzimba wevalve phantsi kwemeko yokuntywiliselwa kwamanzi.

5. Izinto eziphathekayo zomphezulu wokutywina

(1) Iintlobo zetywina elithambileyoivalve yesangos zahlukile, kwaye iindlela zokutywina kunye neemfuno zezinto ezibonakalayo zahlukile;

(2) Kwiivalvu zesango le-wedge eqhelekileyo, izinto eziphathekayo, indlela yokulungisa kunye nendlela yokugaya yeringi yobhedu kufuneka ichazwe;

(3) Idatha yovavanyo lwe-physicochemical kunye nococeko lwevalve yesango elithambileyo kunye nesixhobo sokufakwa kwepleyiti yevalvu;

6. Ukupakisha i-valve shaft

(1) Kungenxa yokuba itywina elithambileyoivalve yesangokumnatha wombhobho ngokuqhelekileyo ukuvulwa nokuvala ngokungaqhelekanga, ukupakishwa kuyadingeka ukuba kusebenze iminyaka emininzi, kwaye ukupakisha akugugi, kwaye umphumo wokutywinwa ugcinwa ixesha elide;

(2) Ukupakishwa kwevalve kufuneka kwakhona kube ngokusisigxina xa iphantsi kokuvulwa nokuvalwa rhoqo;

(3) Ngenxa yezi mfuno zingasentla, ukupakishwa kweshafu yevalve kuzamela ukuba kungatshintshwa ubomi okanye ngaphezulu kweminyaka elishumi;

(4) Ukuba ukupakishwa kufuna ukutshintshwa, ukuyila kwevalve ye-pneumatic kufuneka kuthathelwe ingqalelo amanyathelo anokutshintshwa phantsi kwemeko yoxinzelelo lwamanzi.

Okwesithathu, indlela yokusebenza kwetywina elithambileyoivalve yesango

3.1 Indawo yokuvula nokuvalwa kwevalve yesango elithambileyo ngexesha lokusebenza kufuneka ivalwe ngokwewotshi.

3.2 Ngenxa yokuba i-valve ye-pneumatic kumnatha wombhobho idla ngokuvulwa kwaye ivalwe ngesandla, inani lokuvula nokuvala ii-revolutions akufanele libe kakhulu, oko kukuthi, i-valve yobubanzi obukhulu kufuneka ibe ngaphakathi kwe-200-600 revolutions.

3.3 Ukuze kuququzelelwe ukuvulwa kunye nokuvala ukusebenza komntu omnye, i-torque ephezulu yokuvula kunye nokuvala kufuneka ibe yi-240N-m phantsi kweemeko zoxinzelelo lwepayipi.

3.4 Isiphelo sokuvula nokuvalwa kwevalve yesango lokutywina kufuneka sibesisikwere itenon, kwaye ubungakanani bufanele bubekwe emgangathweni, bujonge phantsi, ukuze abantu bakwazi ukusebenza ngokuthe ngqo emhlabeni. Iivalvu ezinediski zediski azifanelekanga ukusetyenziswa kuthungelwano olungaphantsi komhlaba.

Iphaneli ye-3.5 yokubonisa iqondo lokuvula kunye nokuvala itywina elithambileyoivalve yesango

(1) Uphawu lwesikali lweqondo lokuvula nokuvala levalve yesango lokutywina elithambileyo lufanele luphoswe kwisigqubuthelo sebhokisi yegiya okanye kwiqokobhe lecwecwe lecwecwe emva kokutshintsha indlela, zonke zijonge emhlabeni, kwaye uphawu lwesikali lufanele luxutywe ngephosphors ukubonisa ukutsala amehlo;