Esihlokweni esandulele, sikhulume ngama-valve esango kanye nembulunga, namuhla siqhubekela phambili kuma-butterfly valves kanye nama-valve okuhlola, avame ukusetshenziselwa ukwelashwa kwamanzi.
1. I-Butterfly Valve.
Butterfly valveiyi-valve ejikelezayo esebenzisa idiski (eyaziwa nangokuthi ipuleti uvemvane) ilungu elivula futhi livale ukuze lijikeleze ngo-90° noma cishe ngo-90° ukuze uvule futhi uvale isiteshi.Ukunyakaza kwe-butterfly valve disc kuyasula, ngakho-ke ama-valve amaningi ovemvane angasetshenziselwa imidiya enezinhlayiya eziqinile ezimisiwe.
Ama-valve ovemvane asetshenziswa ngokuvamile ahlanganisa ama-wafe nama-butterfly valves.I-valve yovemvane yohlobo lwe-wafer isetshenziselwa ukuxhuma i-valve phakathi kwama-flange amapayipi amabili nama-stud bolt, futhi i-valve yohlobo lwe-butterfly yohlobo lwe-flange ine-flange ku-valve, futhi ama-flange emikhawulweni yomibili ye-valve axhunywe ku-flange yepayipi ngamabholithi.
Izici:
1.Ubukhulu obuncane, ubude obufushane, isakhiwo esilula nesisindo esincane.
2. Kulula ukuyisebenzisa, ukuvula nokuvala ngokushesha, kudingeka kuphela ukuzungezisa idiski ngo-90° ukuze uvule futhi uvale.
3. Ukubekwa uphawu okuhle nokusebenza kokulungiswa.Ngenxa yokuthi irabha isetshenziswa njengendandatho yokuvala, ukucindezela nokuqina kuhle (okungukuthi, ngeke kube lukhuni), ngakho-ke ukusebenza kokuvala kuhle..I-valve flap ingavulwa phakathi kuka-15° no-70°, futhi ingakwazi ukulawula ukugeleza okubucayi.
4. I-torque encane yokusebenza nokumelana noketshezi.Ngokwezilinganiso, ukumelana noketshezi lwamavalvu ovemvane kuncane kunokwezinye izinhlobo zamavalvu ngaphandle kwamavalvu ebhola.
5. Ngenxa yokulinganiselwa kwezinto zokuvala, ukucindezela kokusebenza kanye nobubanzi bokushisa bokusebenza kwe-valve butterfly kuncane kakhulu.
2.Hlola iValve
Ukusetshenziswa kanye nezici:
Hlola i-valveiyivalvu esetshenziselwa ukuvimbela ukubuyela emuva kwemidiya epayipini, ivula lapho okuphakathi kugeleza phansi komfula futhi ivale ngokuzenzakalelayo lapho okuphakathi kugeleza emuva.Ngokujwayelekile esetshenziswa epayipini ayivumeli okuphakathi ukuthi kugeleze ngakolunye uhlangothi, ukuze kuvinjwe ukubuyela emuva komonakalo ophakathi kwezinto zokusebenza nezingxenye.Uma iphampu iyeka ukusebenza, ungabangeli ukuhlehla kwephampu ejikelezayo.Epayipini, ngokuvamile hlola ama-valve nama-valve avaliwe asetshenziswa ochungechungeni.Lokhu kungenxa yokuvaleka okungalungile kwe-valve yokuhlola, lapho ingcindezi yemidiya incane, kuzoba nengxenye encane yokuvuza kwemidiya, isidingo sama-valve avaliwe ukuze kuqinisekiswe ukuvalwa kwepayipi.I-valve engezansi iphinde ibe i-valve yokuhlola, kufanele icwiliswe emanzini, ifakwe ngokuqondile empompini ayikwazi ukuzenzela noma akukho i-vacuum yokudonsa amanzi okudonsa amanzi ngaphambili.
I-valve yokwelashwa kwamanzi ukwehluleka okujwayelekile kanye nezilinganiso
I-valve ekusebenzeni kwepayipi isikhathi esithile, kuzoba nokwehluleka okuhlukahlukene.Okokuqala, inani lezingxenye ezihlobene nokubunjwa kwe-valve, izingxenye eziningi ziwukwehluleka okuvamile.Okwesibili, ngokuklama kwe-valve, ukukhiqiza, ukufakwa, izimo zokusebenza, izinzuzo zesondlo kanye nokubi.Ukwehluleka okuvamile kwe-valve engaqhutshwa ngamandla kuhlukaniswe izigaba ezine.
1.Ukuhluleka kokudlulisela
Ukwehluleka kwedivaysi yokudlulisela kuvame ukubonakaliswa njengokuminyana kwesiqu se-valve, ukusebenza okuguquguqukayo noma i-valve ingakwazi ukusebenza.Izizathu yilezi: i-valve ivaliwe isikhathi eside ngemva kokugqwala;ukufakwa nokusebenza kokulimala okungalungile emicu ye-stem noma i-stem nut;isango liminyene emzimbeni we-valve yizinto zangaphandle;isango livamise ukuvuleka uhhafu futhi livalwe uhhafu, ngamanzi noma eminye imithelela eholela ezikulungeni zesiqu kanye nokungaqondani kahle kocingo lwe-stem nut, ukuxega, isenzakalo esiluma;ingcindezi yokupakisha iqine kakhulu, ibambe isiqu;Isiqu sigqitshiwe noma ngokuvalwa kwezingxenye eziminyene.Ukugcinwa kufanele kube izingxenye zokushayela ezigcotshisiwe.Ngosizo lwe-wrench, futhi ngokuthepha ngobumnene, ungakwazi ukuqeda umkhuba we-jamming, i-topping;ukumisa ukulungiswa kwamanzi noma ukushintshwa kwe-valve.
2.Ukulimala kwe-valve yomzimba
Izizathu zokuqhekeka komzimba we-valve: ukwehla kokumelana nokubola kwe-valve;ukuhlaliswa kwesisekelo sepayipi;ingcindezi yenethiwekhi yamapayipi noma izinguquko zomehluko wokushisa;isando samanzi;vala ukusebenza okungalungile kwe-valve nokunye.Kufanele isuse ngokushesha izimbangela zangaphandle bese ibuyisela uhlobo olufanayo lwezingxenye zevalvu noma amavalvu.
3. Ukuvuza kwe-valve
Ukuvuza kwe-valve kubonakala njengokuthi: ukuvuza kwe-valve stem core;ukuvuza kwe-gland;ukuvuza kwe-flange gasket.Izimbangela ezivamile yilezi: isiqu se-valve (i-valve shaft) ukuguga, ukugqwala kwe-corrosion, ukuvala imigodi, ukuxebuka;ukuguga uphawu, ukuvuza;amabhawodi endlala, amabhawodi e-flange akhululekile.Ukugcinwa kwanda, esikhundleni se-sealing medium;buyisela inadi elisha ukuze ulungise indawo yebhawudi eliqinisayo.
Kungakhathaliseki ukuthi hlobo luni lokwehluleka uma ukulungiswa okuvamile, ukulungiswa kungafiki ngesikhathi, kungase kubangele ukuchithwa kwamanzi, noma okubi nakakhulu, kubangele lonke uhlelo lukhubazekile.Ngakho-ke, izisebenzi zokunakekelwa kwe-valve kumele zibe phezu kwezimbangela zokuhluleka kwe-valve ukwenza umsebenzi omuhle, ukulawulwa okunekhono nokunembile kanye nokusebenza kwe-valve, ukwelashwa okufika ngesikhathi nokunquma kokuhluleka okuphuthumayo okuhlukahlukene, ukuvikela ukusebenza okuvamile kwenethiwekhi yokwelashwa kwamanzi.
4.ivalvu ukuvuleka nokuvala akukuhle
I-valve yokuvula nokuvala ukusebenza okubi kwe-valve ayivuliwe noma ivaliwe, i-valve ayikwazi ukusebenza ngokujwayelekile.Izizathu yilezi: ukugqwala kwesiqu se-valve;isango eliboshwe noma isango livaliwe isikhathi eside esimweni sokugqwala;ukuphuma kwesango;izinto zangaphandle ezinamathele endaweni yokuvala noma emseleni wokuvala;ukuguga kwezingxenye zokudlulisela, ukugxuma.Ukuhlangabezana nokugcinwa kwesimo esingenhla, izingxenye zokuhambisa ukugcotshwa;ukuvula nokuvala ngokuphindaphindiwe i-valve kanye nomthelela we-hydrodynamic wezinto zangaphandle;ukushintshwa kwe-valve.