I-Cavication yempompo: ithiyori kunye nokubalwa
Isishwankathelo se-caviden phenomenon
Ingcinezelo ye-vaporization yolwelo yi-vaporization yoxinzelelo lwe-vaporization yolwelo (uxinzelelo lwe-vapor). Uxinzelelo lwendlu yolwelo luhambelana nobushushu. Amaqondo obushushu aphezulu, owona mgangatho mkhulu woxinzelelo. Uxinzelelo lwendlu yamanzi acocekileyo kubushushu begumbi ye-20 ℃ yi-233.8pa. Ngelixa uxinzelelo lwendlu yamanzi nge-100 ℃ yi-101296pa. Ke ngoko, amanzi acocekileyo kubushushu begumbi (20 ℃) aqalise ukuphosa xa uxinzelelo lwehla ukuya kwi-233.8PA.
Xa uxinzelelo lolwelo luncitshiswa kuxinzelelo lwendlu kwiqondo lobushushu, ulwelo luya kuvelisa amaqamza, ebizwa ngokuba yi-cavitity. Nangona kunjalo, umphunga kwi-bubbble awuyonto ingako, kodwa iqulethe irhasi (ikakhulu igesi) ngohlobo lokupheliswa okanye i-nucleus.
Xa iibhulethi eziveliswe ngexesha lokuhamba kovavanyo ukuya kuxinzelelo oluphezulu, ivolumu yabo iyancipha kwaye iphinde iqhube. Le phenonon inyamalala inyamalala ngenxa yolwelo ngenxa yoxinzelelo lubizwa ngokuba kukuwa kwecavitication.
I-phenomenon ye-cavication kwimpompo
Xa impompo isebenza, ukuba indawo yengingqi yenxalenye yayo yokugquma (ihlala kwindawo ethile ngasemva kwe-impleller blade). Ngesizathu esithile, xa uxinzelelo olupheleleyo lwehla kwi-fuporization uxinzelelo lweqondo elikhoyo, ulwelo luqala ukuphosa apho, ukuvelisa i-fubble. Ezi gubble zihamba phambili nolwelo, kwaye xa zifikelela kuxinzelelo oluthile, ulwelo oluninzi olujikeleze amaqamza amaqabble i-fubble incipha kabukhali kwaye iqhume. Xa i-bubble ihlambuza, amasuntswana olwelo iya kuzalisa i-cavity ngesantya esiphezulu kwaye singqubana ukuze senze isando. Le phenonon iyakubangela umonakalo wokungabolekisi kumacandelo angaphezulu xa eyenzeka kudonga oluqinileyo.
Le nkqubo yinkqubo yempompo yempompo.
Impembelelo yePump Cavitity
Veza ingxolo kunye ne-vibration
Umonakalo womonakalo wezinto ezikhoyo
Ukonakaliswa kwentsebenzo
I-Pump Cavitiation Occial Equation
Isibonelelo se-NPSHR-PUMP SIVUTE sikwabizwa ngokuba sisibonelelo esifanelekileyo se-caviting, kwaye ibizwa ngokuba yintloko efunekayo yentloko phesheya.
I-NPSHA-Imvume yefowuni ikwabizwa ngokuba yi-Caviticance esebenzayo yesibonelelo, esibonelelwa sisixhobo sokungenisa. I-NPSHA, impompo encinci iya kucanda. I-NPSHA inciphisa ngokunyuka kwetrafikhi.
Ubudlelwane phakathi kwe-NPSHA kunye ne-NPShr xa utshintsho luguqukayo
Indlela yokubala Indlela yeFovition
hg = PC / ρG-HC-PV / ρG- [NPSh]
[NPSH] -Ukugqitywa kovavanyo lwe-cavite
[NPSh] = (1.1 ~ 1.5) NPSHR
Xa inqanaba lokuhamba likhulu, thatha ixabiso elikhulu, kwaye xa inqanaba lokuhamba lincinci, thatha ixabiso elincinci.
IXESHA LOKUQALA: UJan-22 ukuya ku-2224