Valve, eo ka linako tse ling e tsejoang e le valve ka Senyesemane, ke sesebelisoa se sebelisetsoang ho thibela kapa ho laola phallo ea metsi a fapaneng ka karolo e itseng. Valve ke sesebelisoa sa phaephe se sebelisetsoang ho bula le ho koala liphaephe, ho laola tsela ea phallo, le ho fetola le ho laola litšobotsi tsa sebaka sa ho fetisa, ho kenyeletsoa mocheso, khatello le phallo. E ka aroloa ka li-valve tse koetsoeng, ho hlahloba li-valve, li-valve tse laolang, jj. ho latela mosebetsi. Li-valve ke likarolo tse laolang phallo ea mefuta e fapaneng ea mokelikeli, ho kenyeletsoa moea, metsi, mouoane, jj. litsamaisong tsa ho tsamaisa metsi. Li-valve tsa tšepe e lahlehileng, li-valve tsa tšepe e lahlehileng, li-valve tsa tšepe e sa hloekang, li-valve tsa tšepe ea chromium molybdenum, li-valve tsa tšepe ea chrome molybdenum vanadium, li-valve tsa tšepe ea duplex, li-valve tsa polasetiki, li-valve tse sa tloaelehang tse ikhethileng, jj. ke tse 'maloa feela tsa mefuta e fapaneng le litlhaloso tsa li-valve.
Mabapi le nako e fetileng ea valve
Letsatsi le leng le le leng la bophelo ba rona le angoa ke tšebeliso ea li-valve. Re sebelisa li-valve ha re bulela pompo ho fumana metsi a nooang kapa pompo ea mollo ho nosetsa lijalo. Ho phehella ha li-valve tse ngata ho bakoa ke ho hokahana ho rarahaneng ha liphaephe.
Phetoho ea lits'ebetso tsa tlhahiso ea indasteri le nts'etsopele ea li-valve li hokahane haufi-ufi. Lejoe le leholo kapa kutu ea sefate e ka sebelisoa ho emisa phallo ea metsi kapa ho fetola tsela eo a tsamaeang ka eona lefatšeng la boholo-holo e le ho laola phallo ea linoka kapa melapo. Li Bing (lilemo tse sa tsejoeng tsa tsoalo le lefu) o ile a qala ho cheka liliba tsa letsoai Thoteng ea Chengdu qetellong ea mehla ea Linaha tse Loanang e le hore a fumane letsoai la letsoai le ho halika.
Ha ho ntšoa letsoai, karolo e tšesaane ea lehlaka e sebelisoa e le silindara ea ho ntša letsoai e kenngoang ka har'a casing 'me e na le valve ea ho bula le ho koala tlase. Foreimi e kholo ea lehong e hahuoa holim'a seliba, 'me silindara e le' ngoe e ka hula letsoai la libakete tse 'maloa. Lehlaka le ntšoa ka lebili la letsopa le sebelisoa ho ntša metsi ka bakete ea lehlaka. E kenye ka har'a seliba ho ntša letsoai ho etsa letsoai, 'me u kenye valve ea lepolanka ea plunger ntlheng e' ngoe ho thibela ho lutla.
Har'a lintho tse ling, lichaba tsa Baegepeta le Bagerike li ile tsa hlahisa mefuta e mengata e bonolo ea li-valve bakeng sa ho nosetsa lijalo. Leha ho le joalo, ka kakaretso hoa amoheloa hore Baroma ba boholo-holo ba ile ba theha mekhoa e rarahaneng ea ho nosetsa metsi bakeng sa ho nosetsa lijalo, ba sebelisa li-valve tsa cock le plunger hammoho le li-valve tse sa khutleleng ho thibela metsi ho phalla morao.
Bongata ba meralo ea theknoloji ea Leonardo da Vinci ea mehleng ea Renaissance, ho kenyeletsoa le litsamaiso tsa nosetso, liforo tsa nosetso, le merero e meng ea bohlokoa ea litsamaiso tsa hydraulic, li ntse li sebelisa li-valve.
Hamorao, ha theknoloji ea ho futhumatsa le lisebelisoa tsa paballo ea metsi li ntse li tsoela pele Europe,tlhoko ea li-valveKa lebaka leo, di-valve tsa koporo le polaka ya aluminium di ile tsa ntshetswa pele, mme di-valve tsa kenngwa tsamaisong ya tshepe.
Phetohelo ea Liindasteri le nalane ea sejoale-joale ea indasteri ea li-valve li na le nalane e ts'oanang e ileng ea teba haholoanyane ha nako e ntse e ea. Enjene ea pele ea mouoane ea khoebo e ile ea thehoa ka 1705 ke Newcomman, ea ileng a boela a fana ka melao-motheo ea taolo bakeng sa ts'ebetso ea enjene ea mouoane. Ho qaptjoa ha enjene ea mouoane ke Watt ka 1769 ho tšoaile ho kena ha valve semmuso indastering ea mechini. Li-valve tsa plug, li-valve tsa polokeho, li-valve tsa cheke, le li-valve tsa serurubele li ne li sebelisoa khafetsa lienjeneng tsa mouoane.
Litšebeliso tse ngata khoebong ea li-valve li simolohile tlhahisong ea Watt ea enjene ea mouoane. Li-valve tsa li-slide li qalile ho hlaha lekholong la bo18 le la bo19 la lilemo ka lebaka la tšebeliso e pharaletseng ea lienjene tsa mouoane ke basebetsi ba merafo, ba aenang, ba etsang masela, ba mechini le liindasteri tse ling. Ho feta moo, o thehile molaoli oa pele oa lebelo, o ileng oa lebisa thahasellong e eketsehileng taolong ea phallo ea mokelikeli. Nts'etsopele ea bohlokoa ntlafatsong ea li-valve ke ponahalo e latelang ea li-valve tsa globe tse nang le likutu tse nang le likhoele le li-valve tsa heke ea wedge tse nang le likutu tse nang le likhoele tsa trapezoidal.
Ntlafatso ea mefuta ena e 'meli ea li-valve qalong e ile ea khotsofatsa litlhoko tsa taolo ea phallo hammoho le litlhoko tsa liindasteri tse ngata bakeng sa ntlafatso e sa khaotseng ea khatello le mocheso oa li-valve.
Li-valve tsa bolo kapa li-valve tsa polaka tse chitja, tse qalileng moralo oa John Wallen le John Charpmen lekholong la bo19 la lilemo empa li sa ka tsa kenngoa tlhahisong ka nako eo, li ne li lokela ho ba li-valve tsa pele historing.
Sesole sa Metsing sa US e ne e le motšehetsi oa pele oa tšebeliso ea li-valve likepeng tse tsamaeang ka tlas'a metsi ka mor'a Ntoa ea II ea Lefatše, 'me nts'etsopele ea li-valve e ile ea etsoa ka khothatso ea mmuso. Ka lebaka leo, merero le maano a mangata a macha a R&D a entsoe sebakeng sa tšebeliso ea li-valve, 'me ntoa e boetse e lebisitse tsoelo-peleng ea theknoloji e ncha ea li-valve.
Moruo oa linaha tse tsoetseng pele indastering o ile oa qala ho atleha le ho hola ka mor'a o mong lilemong tsa bo-1960. Lihlahisoa tse tsoang Jeremane Bophirima ea mehleng, Japane, Italy, Fora, United Kingdom le lichaba tse ling li ne li labalabela ho rekisa thepa ea tsona linaheng tse ling, 'me ho romelloa ha mechini le lisebelisoa tse felletseng ke hona ho ileng ha susumetsa ho romelloa ha li-valve kantle ho naha.
Likolone tsa mehleng li ile tsa fumana boipuso ka bonngoe pakeng tsa bofelo ba lilemo tsa bo-1960 le qalo ea lilemo tsa bo-1980. Ka tjantjello ea ho nts'etsapele liindasteri tsa bona tsa lehae, ba ile ba reka mechine e mengata, ho kenyeletsoa le li-valve. Ho feta moo, bothata ba oli bo ile ba susumetsa lichaba tse fapaneng tse hlahisang oli ho etsa matsete a bohlokoa lefapheng la oli le ruisang haholo. Nako ea kholo e kholo tlhahisong ea li-valve tsa lefats'e, khoebong le nts'etsopele e ile ea tlisoa ka mabaka a 'maloa, e leng se ileng sa ntlafatsa kholo ea khoebo ea li-valve haholo.
Nako ea poso: Phuptjane-25-2023
