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Ukulawula ivalve ngokudlula kwamanzi

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Chwetheza  Ukulawula iValve
Umzekelo  I-T668Y-4500LB, T668Y-500, T668Y-630
Ububanzi begama  I-DN 300-400

 Isetyenziselwa umbhobho wokuhambisa amanzi ophambili we-1,000MW supercritical (ultra-supercritical) unit boiler yokulawula ukuhamba kwamanzi.

  1. Ivelufa luhlobo lwesakhiwo oluthe tye, indlela yokuhamba okuphakathi luhlobo lokuhamba kunye nokutywina umphezulu wesihlalo sevalve kukude kwinqanaba lokugqibela lomphunga ukuze uqinisekise ubomi benkonzo.
  2. Umzimba wevalve kunye nebhonethi yamkela ubume besinyithi obomeleleyo ngamandla aphezulu okuhlangabezana ngcono neemfuno zamandla phantsi kobushushu obuphezulu kunye noxinzelelo.
  3. Yakha isihlalo sevali esisuswayo kunye nesihlalo sevalve sinesitayile se-6 se-alloy yokwakha-welding kumphezulu wayo wokutywina.
  4. Idiskhi yevalve yamkela ubume obulungeleleneyo kwaye uphawu lokutywina lucimile rhoqo ukucima; imingxunya ephezulu neyasezantsi yediski yevalufa iyayiqonda ibhalansi yoxinzelelo ngokusebenzisa ipore yokudibanisa. Kule meko, ivelufa ingavalwa sisixhobo sedrive ngaphandle kokufaka kancinci.
  5. Icandelo lokunyusa isiseko sevalve yenzelwe ukwamkela isiciko esi-6 somaleko esinoxinzelelo lwamanqanaba ama-5 ukunciphisa uxinzelelo kwisakhiwo sokusasaza ulwelo oluntsimbi olunye ngamandla aphakamileyo kwi-multi-strand fluid ngamandla asezantsi ukunciphisa isantya nengxolo. Ukuncitshiswa koxinzelelo ngamanyathelo ngenyathelo kufezekiswa kukususwa kwesithuba ukuphelisa i-cavitation. Inyathelo lokugqibela emkhonweni yenza ulwelo luhambe kwicala lomgca ojijekileyo kwaye ujongane nomphakathi wangaphakathi wevalve yomzimba ngokungathanga ngqo ukunciphisa ukubetha kumzimba wevalve.
  6. Ukutywinwa kwe-flange ephakathi isebenzisa isakhiwo sokutywinwa kabini kwe-gasket yezinyo kunye ne-elastic storage ring, okwenza ukutywinwa kuthembeke ngakumbi.
  7. Ngaphantsi kwemeko yokusebenza kokuhamba okuncinci kunye noxinzelelo olukhulu lokwahlulahlula, ukwamkelwa kwamanyathelo ngamanyathelo kwamkelwe kwaye inyathelo ngenyathelo ngenyathelo lokunciphisa uxinzelelo kufezekiswa ngokulungiswa kwethambeka elinobubanzi obungalinganiyo ukulawula isantya sokuhamba okuphakathi ngokungqongqo kunye nokunciphisa ifuthe i-cavitation kunye ne-flash evaporation kwi-valve. Ngaphantsi kwemeko yokusebenza kokuhamba okukhulu kunye noxinzelelo oluncinci lokwahluka, ifestile yenyathelo elinye yamkelwe ukunciphisa uxinzelelo ukuqinisekisa amandla okuhamba kwevalve.
  8. Iimpawu zommiselo ziphuculwe ngepesenti elinganayo, ezinakho ukulawula ukuhamba ngokuphakathi ngokuchanekileyo ukufezekisa ukusebenza komgaqo olungileyo.
  9. Ivalve inokuxhotyiswa ngombane ozikhethelayo okanye womoya wendlela yokuqonda ukuvulwa ngokukhawuleza kunye nokuvalwa kunye nokukhuselwa okuthathu.

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