Amavalvu esangofuthiamavalvu ebhabhathanezisetshenziswa njengezinkinobho zokulawula izinga lokugeleza ekusetshenzisweni kwamapayipi. Yiqiniso, kusenezindlela enqubweni yokukhetha amavalvu e-butterfly namavalvu esango.
Kunethiwekhi yamapayipi okuhambisa amanzi, ukuze kuncishiswe ukujula kokumbozwa kwenhlabathi yepayipi, ububanzi obujwayelekile bepayipi elikhulu bufakwe ivalvu yebhabhathane, futhi uma ukujula kokumbozwa kwenhlabathi kungabalulekile, zama ukukhetha ivalvu yesango, kodwa intengo yevalvu yesango enencazelo efanayo iphakeme kunentengo yevalvu yebhabhathane. Ngokuphathelene nomugqa wokuhlukanisa we-caliber, indawo ngayinye kufanele icatshangelwe ngokwesimo ngasinye. Ngokombono wokusetshenziswa kweminyaka eyishumi edlule, ukwehluleka kwevalvu yebhabhathane kuphakeme kunokwe-ivalvu yesango, ngakho-ke kufanelekile ukunaka ukwandisa ububanzi bokusetshenziswa kwevalvu yesango uma izimo zivuma.
Eminyakeni yamuva nje, abakhiqizi abaningi bama-valve basekhaya bathuthukise futhi balingisa ama-valve esango elithambile, anezici ezilandelayo kune-wedge yendabuko noma ama-valve esango eliphindwe kabili ahambisanayo:
Iivalvuumzimba kanye nebhonethi yevalvu yesango lokuvala elithambile kuphonswa ngendlela yokuphonswa ngokunemba, eyakhiwa ngesikhathi esisodwa, empeleni engashintshwanga ngomshini, futhi ayisebenzisi izindandatho zethusi zokuvala, okusindisa izinsimbi ezingezona insimbi.
Akukho mgodi phansi kwe-ivalvu yesango lokuvala elithambile, akukho ukunqwabelana kwe-slag, kanye nezinga lokuhluleka kwe-ivalvu yesangoukuvula nokuvala kuphansi.
Ipuleti levalvu elinophahla oluthambile lilingana ngobukhulu futhi lingashintshana kalula.
Ngakho-ke, ivalvu yesango lokuvala elithambile izoba uhlobo imboni yokuhlinzeka ngamanzi ejabule ukulusebenzisa. Njengamanje, ububanzi bevalvu yesango lokuvala elithambile elenziwe eShayina bungu-1500mm, kodwa ububanzi babakhiqizi abaningi buphakathi kuka-80-300mm, futhi kusenezinkinga eziningi enqubweni yokukhiqiza yasekhaya. Ingxenye ebalulekile yevalvu yesango lokuvala elithambile yipuleti yevalvu eboshwe ngerabha, futhi izidingo zobuchwepheshe zepuleti yevalvu eboshwe ngerabha ziphakeme, futhi akubona bonke abakhiqizi bakwamanye amazwe abangakufeza, futhi ivame ukuthengwa futhi ihlanganiswe efektri ngekhwalithi ethembekile.
Ibhlogo le-copper nut le-soft seal yasekhayaivalvu yesangoifakiwe futhi ilenga ngaphezu kwepuleti yevalvu yelayini yerabha, efana nesakhiwo sevalvu yesango, futhi ulwelwesi lwerabha lwepuleti yevalvu kulula ukulukhipha ngenxa yokungqubuzana okusebenzayo kwebhulokhi yamantongomane. Kwivalvu yesango yokuvala ethambile yenkampani yangaphandle, ibhulokhi yamantongomane ethusi ifakiwe ku-ram enelayini yerabha ukuze yakhe ingqikithi, okunqoba ukushiyeka okungenhla, kodwa ukugxila kokuhlanganiswa kwesembozo sevalvu nomzimba wevalvu kuphakeme.
Kodwa-ke, lapho uvula futhi uvala ivalvu yesango lokuvala elithambile, akufanele ivalwe kakhulu, inqobo nje uma umphumela wokuvimba amanzi ufinyelelwa, ngaphandle kwalokho akulula ukuvula noma ukususa ulwelwesi lwerabha. Umkhiqizi wamavalvu, ekuhlolweni kokucindezela kwamavalvu, ukusetshenziswa kwesikrufu se-torque ukulawula izinga lokuvala, njengabaqhubi bamavalvu enkampani yamanzi kufanele futhi balandele le ndlela yokuvula nokuvala.
Uyini umehluko phakathi kokusetshenziswa kweamavalvu ebhabhathanefuthiamavalvu esango?
Ngokusho komsebenzi kanye nokusetshenziswa kwe-valve yesango kanye ne-butterfly valve, ukumelana kokugeleza kwe-valve yesango kuncane, ukusebenza kokuvala kuhle, ngoba indlela yokugeleza kwe-plate ye-valve yesango kanye ne-medium kuyi-engeli eqondile, uma i-valve yesango ingekho endaweni yayo ku-switch ye-plate ye-valve, i-medium ekhuhla i-plate ye-valve yenza i-plate ye-valve idlidlize, futhi kulula ukulimaza uphawu lwe-valve yesango.
I-valve ye-Butterfly, eyaziwa nangokuthi i-flap valve, iyisakhiwo esilula se-valve elawulayo, engasetshenziswa ukulawula ukuvulwa/ukuvalwa kwepayipi elinomfutho ophansi. I-valve ye-butterfly ibhekisela engxenyeni yokuvala (i-disc noma i-butterfly plate) njenge-disc, ejikeleza umgodi we-valve ukuze kufezwe ukuvulwa nokuvalwa kohlobo lwe-valve, i-valve ingasetshenziswa ukulawula ukugeleza kwezinhlobo ezahlukene zoketshezi ezifana nomoya, amanzi, umusi, imidiya ehlukahlukene ebolile, udaka, uwoyela, insimbi ewuketshezi kanye nemidiya enemisebe. Ngokuyinhloko idlala indima yokusika nokugoqa ipayipi. Ingxenye yokuvula nokuvala i-valve ye-butterfly iyi-plate ye-butterfly efana ne-disc, ejikeleza i-axis yayo emzimbeni we-valve, ukuze kufezwe injongo yokuvula nokuvala noma ukulungisa.
Ipuleti levemvane liqhutshwa yisiqu sevalvu, futhi uma liphenduka ngo-90°, lingaqeda ukuvulwa nokuvalwa. Ngokushintsha i-engeli yokuphambuka kwevemvane, izinga lokugeleza kwe-medium lingalawulwa.
Izimo zokusebenza kanye nokusetshenziswa:I-valve yebhabhathaneifanele ukuthutha amapayipi ahlukahlukene emidiya ebolile nengaboli ezinhlelweni zobunjiniyela njengezitofu, igesi yamalahle, igesi yemvelo, igesi kaphethiloli encibilikisiwe, igesi yedolobha, umoya oshisayo nobandayo, ukuncibilikisa amakhemikhali kanye nokuvikelwa kwemvelo kokukhiqizwa kwamandla, ukuhlinzekwa kwamanzi okwakha kanye nokugeleza kwamanzi, njll., futhi isetshenziselwa ukulawula nokunqamula ukugeleza kwemidiya.
I-valve yesango (i-valve yesango) iyingxenye yokuvula nokuvala kwesango, indlela yokuhamba kwesango iqonde ngqo endleleni yoketshezi, i-valve yesango ingavulwa futhi ivalwe ngokuphelele kuphela, ukungakhululeki kwemingcele yomnyango kuhlukile, ngokuvamile ku-5°, lapho izinga lokushisa eliphakathi lingekho phezulu, lingama-2°52′. Ukuze kuthuthukiswe ukukhiqizwa kwayo futhi kulungiswe ukuphambuka kwe-engeli yobuso bokuvala enkambisweni yokucubungula, lolu hlobo lwe-ram lubizwa ngokuthi i-elastic ram.
Laphoivalvu yesangouma ivaliwe, indawo yokuvala ingathembela kuphela ekucindezelweni okuphakathi ukuze ivalwe, okungukuthi, ithembele kuphela ekucindezelweni okuphakathi ukuze icindezele indawo yokuvala yenqama esihlalweni sevalvu ngakolunye uhlangothi ukuqinisekisa ukuvalwa kwendawo yokuvala, okuzivala ngokwayo. Amavalvu amaningi esango avalwa ngenkani, okungukuthi, lapho ivalvu ivaliwe, inqama kumele icindezelwe ngenkani esihlalweni sevalvu ngamandla angaphandle ukuqinisekisa ukuqina kwendawo yokuvala.
Imodi yokunyakaza: Ipuleti lesango levalvu yesango lihamba ngendlela eqondile nesiqu sevalvu, esibizwa nangokuthi ivalvu yesango lenduku evulekile. Ngokuvamile kuba nentambo ye-trapezoidal entongeni yokuphakamisa, nge-nut phezulu kwevalvu kanye nomsele wokuqondisa emzimbeni wevalvu, ukunyakaza okujikelezayo kushintshwa kube ukunyakaza okuqondile, okungukuthi, i-torque yokusebenza ishintshwa ibe yi-operating thrust. Lapho ivalvu ivulwa, lapho ukuphakama kwe-ram lift kulingana nobubanzi bevalvu obuyi-1:1, ukugeleza koketshezi akuvimbeki nhlobo, kodwa lesi sikhundla asinakuqashelwa ngesikhathi sokusebenza. Ekusetshenzisweni kwangempela, siphawulwa yi-vertex yesiqu, okungukuthi, isikhundla esingenakuvulwa, njengendawo yaso evulekile ngokuphelele. Ukuze kubhekwe isimo sokukhiya kwezinguquko zokushisa, sivame ukuvulwa siye endaweni engenhla, bese sibuyiselwa emuva ekujikeni okungu-1/2-1 njengendawo yevalvu evulekile ngokuphelele. Ngakho-ke, indawo evulekile ngokuphelele yevalvu inqunywa yindawo ye-ram (okungukuthi i-stroke). I-nut ethile ye-valve yesango itholakala esangweni, futhi isondo lesandla liyajikeleza ukuze kuqhutshwe i-valve stem ukuze ijikeleze, bese ipuleti lesango liphakanyiswa, leli valve libizwa ngokuthi i-rotary rod gate valve noma i-dark rod gate valve.
Isikhathi sokuthunyelwe: Agasti-22-2024
