Ke engbelofocavitation?Joang ho felisa eona?
Tianjin Tanggu Water-Seal Valve Co., Ltd
Tianjin,CHINA
Ea bo19,Phuptjane,2023
Feela joalokaha molumo o ka ba le phello e mpe 'meleng oa motho, maqhubu a itseng a ka baka tšenyo ea thepa ea indasteri ha valve ea ho laola e khethiloe hantle, ho na le kotsi e eketsehileng ea cavitation, e leng se tla lebisa ho maemo a phahameng a lerata le ho sisinyeha. tshenyo e potlakileng ea liphaephe tse ka hare le tse tlase tsabelofo.
Ho feta moo, maemo a phahameng a lerata hangata a baka ho thothomela ho ka senyang liphaephe, lisebelisoa le lisebelisoa tse lingSeqhubuha nako e ntse e feta, ho senyeha ha likarolo, cavitation ea valve e bakoang ke tsamaiso ea lipeipi e atisang ho senyeha haholo.Tšenyo ena e bakoa haholo ke matla a lerata a sisinyehang, ts'ebetso e potlakileng ea kutu le cavitation e bonts'itsoeng ke molumo o phahameng oa lerata la ho sisinyeha ha amplitude e hlahisoang ke ho theha le ho putlama ha li-bubble tsa mouoane haufi le tlase ho theosa..
Le hoja hangata sena se etsahala ka bololi-valvele li-valve tsa rotary 'meleng, li ka etsahala ka nako e khuts'oane, e phahameng ea ho hlaphoheloa e ts'oanang le karolo ea' mele ea sephaphatha ea V-ball.belofo, haholo-hololi-valve tsa serurubelekarolong e ka tlaase ea noka ea belofo ha ebelofoe hatelloa sebakeng se le seng se tloaelehileng ho cavitation phenomenon, e atisang ho tsoa ka har'a piping ea valve le ho lokisoa ha welding, valve ha e tšoanelehe bakeng sa karolo ena ea mohala.
Ho sa tsotellehe hore na cavitation e hlaha ka har'a valve kapa ka tlaase ho sephahla, lisebelisoa sebakeng sa cavitation li tla ba le tšenyo e khōlō ho lifilimi tse nyenyane haholo, liliba le likarolo tse nyenyane tsa likarolo tsa cantilever, ho sisinyeha ho hoholo ha amplitude ho ka etsa hore ho be le oscillations.Hangata lintlha tsa ho hloleha li fumaneha lisebelisoa tse kang li-gauge tsa khatello, li-transmitters, li-sleeve tsa thermocouple, li-flowmeters, li-sampling system Actuators, li-positioner le li-switch switch tse nang le liliba li tla senyeha ka potlako, 'me li-brackets tse ntseng li hola, li-fasteners le lihokelo li tla theoloa le ho hloleha ka lebaka la ho thothomela.
Fretting corrosion, e hlahang pakeng tsa libaka tse tsofetseng tse pepesehileng ho sisinyeha, e tloaelehile haufi le li-valve tsa cavitation.Sena se hlahisa li-oxide tse thata joalo ka li-abrasives ho potlakisa ho roala lipakeng tsa libaka tse tsofetseng.Lisebelisoa tse amehang li kenyelletsa li-valve tsa ho itšehla thajana le ho hlahloba, ho kenyelletsa li-valve tsa taolo, lipompo, li-skrini tse potolohang, li-samplers le mochini ofe kapa ofe o potolohang kapa o thellang.
Li-vibrations tsa amplitude tse phahameng li ka boela tsa peperana le ho senya likarolo tsa li-valve tsa tšepe le mabota a lipeipi.Likaroloana tsa tšepe tse hasantsoeng kapa lisebelisoa tsa lik'hemik'hale tse senyang li ka silafatsa mecha ea litaba ka har'a liphaephe, tse ka bang le tšusumetso e kholo holim'a liphaephe tsa bohloeki tsa valve le mecha ea phatlalatso ea liphaephe tse hloekileng.Sena le sona ha sea lumelloa.
Polelo ea ho hloleha ha cavitation ea li-valve tsa plug e rarahane haholoanyane mme ha e baloe feela ho theoha ha khatello ea khatello.Boiphihlelo bo fana ka maikutlo a hore ho ka etsahala hore khatello ea molapo o ka sehloohong e theohele khatellong ea mouoane ea mokelikeli pele ho vaporization ea sebaka seo le ho putlama ha bubble ea mouoane.Baetsi ba bang ba li-valve ba bolela esale pele ho hloleha ha khoeli pele ho nako ka ho hlalosa ho theoha ha khatello ea pele ea tšenyo.Mokhoa oa moetsi oa li-valve oa ho qala ka ho bolela esale pele tšenyo ea cavitation e thehiloe tabeng ea hore li-bubble tsa mouoane lia oa, li baka cavitation le lerata.Ho khethiloe hore tšenyo e kholo ea cavitation e tla qojoa haeba boemo ba lerata bo baloang bo ka tlaase ho meeli e thathamisitsoeng ka tlase.
Boholo ba valve ho fihla ho lisenthimithara tse 3 - 80 dB
Boholo ba valve ke lisenthimithara tse 4-6 - 85 dB
Boholo ba valve ke lisenthimithara tse 8-14 - 90 dB
Li-valve tsa boholo ba lisenthimithara tse 16 le tse kholoanyane - 95 dB
Mekhoa ea ho felisa tšenyo ea cavitation
Moralo o ikhethileng oa li-valve ho felisa cavitation o sebelisa phallo e arohaneng le ho theoha ha khatello ea maemo:
"Valve diversion" ke ho arola phallo e kholo ho phallo e 'maloa e nyane,' me tsela ea phallo ea valve e entsoe e le hore phallo e phalle ka har'a menyetla e mengata e bapileng e nyane.Kaha karolo ea boholo ba bubble ea cavitation e baloa ka ho bula moo phallo e fetang teng.Pula e nyane e etsa hore ho be le lipululana tse nyane, tse bakang lerata le fokolang le tšenyo e nyane ha ho tluoa ts'enyong.
"Ho theoha ha khatello ea graded" ho bolela hore valve e etselitsoe ho ba le lintlha tse peli kapa ho feta tsa ho fetola letoto, kahoo ho e-na le ho theoha ha khatello eohle ka mohato o le mong, ho nka mehato e 'maloa e nyenyane.Ka tlase ho ho theoha ha khatello ea motho ka mong ho ka thibela khatello ea shrinkage hore e se ke ea theoha khatello ea mouoane oa mokelikeli, kahoo ho felisa ketsahalo ea cavitation ka valve.
Motsoako oa ho kheloha le khatello ea ho theoha ka har'a valve e le 'ngoe e lumella ho ntlafala ha cavitation ho hanyetsa ka.Nakong ea phetoho ea li-valve, ho beha valve ea ho laola le khatello ea ho kena ha valve e phahame (mohlala, lehlakoreng le ka holimo ho ea holimo, kapa bophahamong bo tlaase), ka linako tse ling ho felisa mathata a cavitation.
Ho phaella moo, ho beha valve ea ho laola sebakeng sa mocheso oa mokelikeli, ka hona, khatello e tlaase ea mouoane (e kang mocheso o tlaase oa mocheso oa mahlakoreng a mocheso) o ka thusa ho felisa mathata a cavitation.
Kakaretso e bontšitse hore cavitation phenomenon ea li-valve ha e le hantle ha e bue feela ka ts'ebetso ea ho senyeha le ho senyeha ha li-valve.Liphaephe le lisebelisoa tse theohelang tlaase le tsona li kotsing.Ho bolela esale pele cavitation le ho nka mehato ea ho e felisa ke eona feela tsela ea ho qoba bothata ba litšenyehelo tse theko e boima tsa tšebeliso ea li-valve.
Nako ea poso: Jun-25-2023