Yintoni iivalvecavitation?Indlela yokuphelisa ngayo?
Tianjin Tanggu Water-Seal Valve Co., Ltd
eTianjin,ETSHAYINA
19th,Isilimela,2023
Kanye njengoko isandi sinokuba nefuthe elibi kumzimba womntu, iifrikhwensi ezithile zinokudlala umonakalo kwizixhobo zoshishino xa ivalve yokulawula ikhethwe ngokufanelekileyo, kukho umngcipheko okhulayo we-cavitation, oya kukhokelela kwingxolo ephezulu kunye namanqanaba okungcangcazela. umonakalo okhawulezayo kwimibhobho yangaphakathi nasezantsiivalve.
Ukongeza, amanqanaba aphezulu engxolo adla ngokubangela ukungcangcazela okunokuthi konakalise imibhobho, izixhobo kunye nezinye izixhoboIvalvengokuhamba kwexesha, ukuthotywa kwamacandelo, i-valve cavitation ebangelwa yinkqubo yombhobho ejongene nomonakalo omkhulu.Lo monakalo ubangelwa ngamandla omsindo we-vibration, inkqubo ye-corrosion ekhawulezayo kunye ne-cavitation ebonakaliswe yinqanaba eliphezulu lengxolo ye-amplitude vibration enkulu eyenziwa ngokubunjwa kunye nokuwa kweebhubhu ze-steam kufuphi nasezantsi kwe-shrinkage..
Nangona oku kuqhele ukwenzeka ebholeniiivalvekunye neevalvu ezijikelezayo emzimbeni, inokwenzeka ngenene, ngokukhawuleza, ukuchacha okuphezulu okufana nenxalenye yomzimba we-V-ball.ivalve, ngakumbiiivalve butterflykwicala elisezantsi levalve xa iivalveigxininiswe kwindawo enye ejongene ne-cavitation phenomenon, ejongene nokuvuza kwi-valve piping kunye nokulungiswa kwe-welding, i-valve ayifanelekanga kweli candelo lomgca.
Kungakhathaliseki ukuba i-cavitation iyenzeka ngaphakathi kwe-valve okanye ezantsi kwe-valve, izixhobo kwindawo ye-cavitation ziya kuba phantsi komonakalo omkhulu kwiifilimu ze-ultra-thin, imithombo kunye nezakhiwo zecandelo elincinci le-cantilever, i-vibrations enkulu ye-amplitude ingabangela i-oscillations.Amanqaku okusilela rhoqo afumaneka kwizixhobo ezinje ngegeyiji zoxinzelelo, izidluliseli, imikhono ye-thermocouple, iiflowmeters, iisistim zesampulu Ii-Actuator, ii-positioners kunye nokutshintsha komda oqulathe imithombo ziya kuchaphazeleka ukuguga okukhawulezileyo, kwaye izibiyeli ezixhomayo, iziqhoboshi kunye nezihlanganisi ziya kukhululeka kwaye zisilele ngenxa yokungcangcazela.
I-Corrosion Fretting, eyenzeka phakathi kweendawo ezigugileyo ezivezwe kwi-vibration, ixhaphake kufutshane ne-cavitation valves.Oku kuvelisa iioksidi eziqinileyo njengeziqhushumbisi ukukhawulezisa ukuguga phakathi kweendawo ezigugileyo.Izixhobo ezichaphazelekayo zibandakanya i-valve yodwa kunye nokutshekisha, ngaphezu kweevalve zokulawula, iimpompo, izikrini ezijikelezayo, iisampuli kunye nayiphi na enye indlela ejikelezayo okanye yokuslayida.
Ukungcangcazela kwe-amplitude ephezulu kunokuqhekeka kwaye kudle iinxalenye zevalvu yesinyithi kunye neendonga zemibhobho.Amasuntswana esinyithi asasazekileyo okanye izinto zekhemikhali ezonakalisayo zinokungcolisa amajelo eendaba kumbhobho, onokuthi ube nempembelelo enkulu kwimibhobho yevalvu ecocekileyo kunye nemithombo yeendaba yokucoceka ephezulu.Oku nako akuvumelekanga.
Ukuqikelelwa kokungaphumeleli kwe-cavitation yeeplagi zeplagi kunzima kakhulu kwaye akubalwa nje ukuhla koxinzelelo lwe-choke.Amava abonisa ukuba kunokwenzeka ukuba uxinzelelo kumlambo oyintloko wehla kuxinzelelo lomphunga wolwelo phambi kokuba umphunga wengingqi kunye nokudilika kweqamza lomphunga.Abanye abavelisi bevalvu baqikelela ukusilela komnyama kwangaphambi kwexesha ngokuchaza ukwehla koxinzelelo lomonakalo wokuqala.Indlela yomenzi we-valve yokuqalisa ngokuqikelela umonakalo we-cavitation isekelwe kwinto yokuba amaqamu e-steam ayawa, abangela i-cavitation kunye nengxolo.Kuye kwamiselwa ukuba umonakalo omkhulu we-cavitation uya kugwenywa ukuba inqanaba lengxolo elibaliweyo lingaphantsi kwemida edweliswe ngezantsi.
Ubungakanani bevalve ukuya kuthi ga kwi-intshi ezi-3 - 80 dB
Ubungakanani beValve ye-4-6 intshi - 85 dB
Ubungakanani beValve 8-14 intshi - 90 dB
Ubungakanani bevalve ye-intshi ye-16 kunye nenkulu - 95 dB
Iindlela zokuphelisa umonakalo we-cavitation
Uyilo olukhethekileyo lwevalvu yokuphelisa i-cavitation isebenzisa ukuhamba okwahlulahlula kunye nokuhla koxinzelelo lwenqanaba:
"I-valve diversion" kukwahlula ukuhamba okukhulu kwiindlela ezincinci ezincinci, kwaye indlela yokuhamba yevalve yenzelwe ukuba ukuhamba kuhambe kwinani leendawo ezincinci ezihambelanayo.Ekubeni inxalenye yobukhulu be-bubble ye-cavitation ibalwa ngokuvula apho ukuhamba kudlula khona.Ukuvuleka okuncinci kwenza amaqamza amancinci, okukhokelela kwingxolo encinci kunye nomonakalo omncinci xa kuziwa kumonakalo.
"Ukuhla koxinzelelo lweBanga" kuthetha ukuba i-valve yenzelwe ukuba ibe namanqaku amabini okanye ngaphezulu okulungelelaniswa kuchungechunge, ngoko ke endaweni yokuhla koxinzelelo kwisinyathelo esinye, kuthatha amanyathelo amancinci amaninzi.Ngaphantsi koxinzelelo lomntu ngamnye kunokuthintela uxinzelelo kwi-shrinkage ekuweni koxinzelelo lwe-vapor lwe-liquid, ngaloo ndlela ukuphelisa i-phenomenon ye-cavitation kwi-valve.
Ukudityaniswa kwe-diverting kunye ne-press drop staging kwi-valve efanayo ivumela ukuphuculwa kokuchasana kwe-cavitation nge.Ngexesha lokuguqulwa kwevalve, ukubeka i-valve yokulawula kunye noxinzelelo kwi-inlet ye-valve iphezulu (umz. icala elingaphezulu phezulu, okanye kwindawo ephantsi), ngamanye amaxesha ukuphelisa iingxaki ze-cavitation.
Ukongezelela, ukubeka i-valve yokulawula kwindawo yokushisa kwamanzi, kwaye ngoko ke uxinzelelo oluphantsi lomphunga (njengokushisa okuphantsi kwecala lokushisa) kunokuncedisa ukuphelisa iingxaki ze-cavitation.
Isishwankathelo sibonise ukuba i-cavitation phenomenon ye-valve ayikho kuphela malunga nokusebenza kokuthotywa kunye nomonakalo kwiivalve.Imibhobho esezantsi kunye nezixhobo zikwasemngciphekweni.Ukuqikelela i-cavitation kunye nokuthatha amanyathelo okuphelisa yindlela yodwa yokuphepha ingxaki yeendleko zokusetyenziswa kwe-valve ezibizayo.
Ixesha lokuposa: Jun-25-2023