Yintoni ivalve?

Ivalve, ngamanye amaxesha eyaziwa ngokuba yisivalo ngesiNgesi, sisixhobo esisetyenziselwa ukuvala okanye ukulawula ukuhamba kolwelo olwahlukeneyo. Ivalve sisincedisi sombhobho esisetyenziselwa ukuvula nokuvala imibhobho, ukulawula indlela yokuhamba, kunye nokuguqula nokulawula iimpawu zendlela yokuhambisa, kubandakanywa ubushushu, uxinzelelo kunye nokuhamba. Iyakwazi ukwahlukana kwiivalve zokuvala, ii-valve zokujonga, iivalve ezilawulayo, njalo njalo kuxhomekeke kumsebenzi. Iivalvu ngamacandelo alawula ukuhamba kweentlobo ezahlukeneyo zolwelo, kubandakanywa umoya, amanzi, umphunga, njl njl. kwiinkqubo zokuhanjiswa kwamanzi. Iivalvu zentsimbi, iivalvu zentsimbi, iivalvu zentsimbi, ichromium molybdenum steel valves, ichrome molybdenum vanadium steel valves, duplex steel valves, plastic valves, non-standard customized valves, njl njl. .

Ngokunxulumene nexesha elidlulileyo levalve

Yonke imihla yobomi bethu ichaphazeleka ngokusetyenziswa kweevalvu. Sisebenzisa izivalo xa sivula itephu ukufumana amanzi okusela okanye isixhobo sokucima umlilo sokunkcenkceshela izityalo. Ukuzingisa kweevalvu ezininzi kungenxa yokudityaniswa okuntsonkothileyo kwemibhobho.

Ukuguquka kweenkqubo zemveliso yoshishino kunye nokuphuhliswa kweevalvu zidibene ngokusondeleyo. Ilitye elikhulu okanye isiphunzi somthi sasinokusetyenziswa ukuvala ukuhamba kwamanzi okanye ukuguqula indlela awayesiya ngakuyo kwihlabathi lamandulo ukuze kulawuleke ukuhamba kwemilambo okanye imisinga. U-Li Bing (ongaziwayo wokuzalwa kunye neminyaka yokufa) waqala ukumba amaqula etyuwa kwiThafa laseChengdu ekupheleni kwexesha lamaZwe alwayo ukuze afumane i-brine kunye netyuwa eqhotsiweyo.

Xa kutsalwa i-brine, iqhekeza elibhityileyo le-bamboo lisetyenziswa njengecylinder yokutsalwa kwebrine ethi ifakwe kwi-casing kwaye ibe nevalve yokuvula nokuvala emazantsi. Isakhelo esikhulu somthi sakhiwe phezu kwequla, kwaye isilinda esinye sinokutsala iibhakethi ezininzi zebrine. I-brine iye itsalwe kusetyenziswa ivili lombumbi kunye nevili lokukhupha ibhakethi yoqalo. Yibeke equleni ukutsala amanzi anetyuwa ukuze enze ityuwa, kwaye ufakele ivalve yeplanga yomthi kwelinye icala ukumisa ukuvuza.

Phakathi kwezinye izinto, impucuko yaseYiputa neyamaGrike yavelisa iindidi ezilula zeevalvu zokunkcenkceshela izityalo. Nangona kunjalo, kuyavunywa ngokubanzi ukuba amaRoma amandulo adala iinkqubo zokunkcenkceshela zamanzi ezintsonkothileyo zokunkcenkceshela izityalo, esebenzisa umqhagi kunye neevalvu zeplunger kunye nezivalo ezingabuyiyo ukumisa amanzi ukuba angabuyeli ngasemva.

Uninzi loyilo lwetekhnoloji kaLeonardo da Vinci ukusuka kwixesha leRenaissance, kubandakanywa iinkqubo zokunkcenkceshela, imisele yokunkcenkceshela, kunye nezinye iiprojekthi ezibalulekileyo zenkqubo yoxinzelelo lwehydraulic, zisasebenzisa izivalo.

Kamva, njengoko iteknoloji yokufudumala kunye nezixhobo zokulondoloza amanzi ziqhubela phambili eYurophu,imfuno yeevalvungokuqhubekayo ukwanda. Ngenxa yoko, i-valve yeplagi yobhedu kunye ne-aluminium yaphuhliswa, kwaye i-valve ifakwe kwinkqubo yesinyithi.

Uguquko lwezoShishino kunye nembali yanamhlanje yoshishino lwevalvu ineembali ezifanayo eziye zanzulu ngokuhamba kwexesha. Injini yokuqala yomphunga yezorhwebo yenziwa ngo-1705 nguNewcomman, owathi wacebisa imigaqo yolawulo yokusebenza kwenjini yomphunga. Ukuveliswa kukaWatt kwenjini yomphunga ngowe-1769 kwaphawula ukungena ngokusemthethweni kwesivalo kushishino loomatshini. Iivalvu zokuplaga, iivalvu zokhuseleko, iivalve zokutshekisha, neevalvu zebhabhathane zazisetyenziswa rhoqo kwiinjini zomphunga.

Izicelo ezininzi kwishishini levalvu zineengcambu zazo ekudalweni kweWatt yenjini yomphunga. Iivalvu zezilayidi zaqala ukubonakala ngenkulungwane ye-18 neye-19 ngenxa yokusetyenziswa ngokubanzi kweenjini zomphunga kumbiwa, uku-ayina, amalaphu, ukwenziwa koomatshini, kunye namanye amashishini. Ukongezelela, wadala umlawuli wokuqala wesantya, owakhokelela ekwandeni komdla ekulawuleni ukuhamba kwamanzi. Uphuhliso olubalulekileyo kuphuhliso lweevalvu kukubonakala okulandelayo kweevalvu zeglowubhu ezinezikhondo eziphothiweyo kunye neevalvu zesango elineentsimbi ezinemisonto yetrapezoidal.

Ukuphuhliswa kwezi ntlobo zevalvu zimbini ekuqaleni kwanelisa iimfuno zolawulo lokuhamba kunye neemfuno zamashishini amaninzi okuphucula rhoqo uxinzelelo kunye nobushushu.

Iivalvu zebhola okanye iivalve zeplagi ezingqukuva, ezisusela emva kuyilo lukaJohn Wallen noJohn Charpmen ngenkulungwane ye-19 kodwa azizange zifakwe kwimveliso ngelo xesha, bekufanele ukuba ziivalve zokuqala ezimbalini.

Umkhosi wamanzi wase-US wayengumxhasi wokuqala wokusetyenziswa kweevalve kwi-submarines emva kweMfazwe Yehlabathi II, kwaye ukuphuhliswa kwevalve kwenziwa ngokukhuthazwa ngurhulumente. Ngenxa yoko, zininzi iiprojekthi kunye namanyathelo e-R&D amatsha enziwe kwindawo yokusetyenziswa kwevalvu, kwaye imfazwe ikhokelele kwinkqubela phambili kubuchwepheshe obutsha bevalvu.

Uqoqosho lwamazwe ahambele phambili kwezoshishino lwaqalisa ukukhula kwaye lwakhula olunye emva kolunye ngeminyaka yee-1960. Iimveliso ezisuka kwindawo eyayisakuba yiNtshona Jamani, eJapan, eItali, eFransi, eUnited Kingdom, nakwezinye iintlanga zazikulangazelela ukuthengisa iimpahla zazo kumazwe aphesheya, yaye ukuthunyelwa koomatshini abapheleleyo nezixhobo kwakuye kwabangela ukuthunyelwa kwezivalo kwamanye amazwe.

Amathanga angaphambili afumana inkululeko nganye nganye phakathi kokuphela kweminyaka yoo-1960 nasekuqaleni kweyee-1980. Belangazelela ukuphuhlisa imizi-mveliso yabo yasekhaya, bathenga kumazwe angaphandle oomatshini abaninzi, kuquka izivalo. Ukongezelela, ingxaki yeoli yabangela ukuba amazwe ahlukahlukeneyo avelisa ioli atyale imali eninzi kwicandelo leoli elinengeniso eninzi. Ixesha lokukhula okugqabhukileyo kwimveliso yevalvu yehlabathi, urhwebo, kunye nophuhliso lwangeniswa ngenxa yezizathu ezininzi, ukuqhubela phambili kakhulu ukukhula kweshishini levalvu.