Iipayipi zeekhemikhali kunye neevalvu ziyinxalenye ebalulekileyo yokuveliswa kweekhemikhali kwaye zidibanisa iintlobo ngeentlobo zezixhobo zeekhemikhali. Zisebenza njani iivalvu ezi-5 eziqhelekileyo kwiipayipi zeekhemikhali? Injongo ephambili? Zithini iivalvu zeekhemikhali kunye nee-fittings? (iintlobo ezili-11 zeepayipi + iintlobo ezi-4 zee-fittings + iivalvu ezili-11) iipayipi zeekhemikhali ezi zinto, ukuqonda ngokupheleleyo!
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Iivalvu ezinkulu ezili-11
Isixhobo esisetyenziselwa ukulawula ukuhamba kolwelo kumbhobho sibizwa ngokuba yivalvu. Iindima zaso eziphambili zezi:
Vula kwaye uvale indima - nqumla okanye unxibelelane nokuhamba kolwelo kumbhobho;
Uhlengahlengiso – ukulungisa isantya sokuhamba kolwelo kumbhobho, ukuhamba;
Ukugoba – ukuhamba kolwelo kwivalvu, okubangela ukwehla okukhulu koxinzelelo.
Udidi:
Ngokwendima yevalvu kwipayipi, yahlukile, inokwahlulwa ibe yivalvu enqunyulweyo (eyaziwa ngokuba yivalvu yeglobhu), ivalvu yokujija, ivalvu yokujonga, ivalvu yokhuseleko, njalo njalo;
Ngokweendlela ezahlukeneyo zokwakha, iivalvu zingahlulwa zibe ziivalvu zesango, iplagi (edla ngokubizwa ngokuba yiCocker), iivalvu zebhola, iivalvu zebhabhathane, iivalvu zediaphragm, iivalvu ezinemigca, njl.njl.
Ukongeza, ngokwemveliso yezixhobo ezahlukeneyo zevalvu, yahlulwe yaba ziivalvu zentsimbi engagqwaliyo, iivalvu zentsimbi ephosiweyo, iivalvu zentsimbi ephosiweyo, iivalvu zeplastiki, iivalvu zeseramikhi, njalo njalo.
Ukukhetha iivalvu ezahlukeneyo kunokufumaneka kwiincwadi zemiyalelo kunye neesampuli ezifanelekileyo, kuphela ziintlobo zeevalvu eziqhelekileyo ezivezwayo apha.
①Ivalvu yeGlobe
Ngenxa yesakhiwo sayo esilula, kulula ukuyenza nokuyilungisa, isetyenziswa kakhulu kwimibhobho yoxinzelelo oluphantsi noluphakathi. Ifakwe kwisiqu sevalvu ngaphantsi kwediski yevalvu ejikelezileyo (intloko yevalvu) kunye nenxalenye yeflangi yomzimba wevalvu (isihlalo sevalvu) ukufezekisa injongo yokunqanda ukuhamba kolwelo.
Isiqu sevalvu sinokulungiswa ngokuphakamisa umsonto, inqanaba lokuvula ivalvu lidlale indima ethile kulawulo. Ngenxa yesiphumo sokunqunyulwa kwevalvu, kuxhomekeke kwintloko yevalvu kunye nesihlalo, uphawu loqhagamshelwano alufanelekanga ukusetyenziswa kumbhobho oqulethe amasuntswana aqinileyo olwelo.
I-Globe Valve ingasetyenziswa ngokweempawu zemidiya ukukhetha intloko yevalvu efanelekileyo, isihlalo, izinto zeqokobhe. Ukusetyenziswa kwevalvu ngenxa yokutywinwa kakubi okanye intloko, isihlalo kunye nezinye iindawo zevalvu zonakele, ungathatha imela ekhanyayo, ukugaya, umphezulu kunye nezinye iindlela zokulungisa nokusetyenziswa, ukuze wandise ubomi benkonzo yevalvu.
②Ivalvu yeSango
Ithe nkqo kwicala elihamba ngalo i-media plate enye okanye ezimbini ezisicaba, kunye nomphezulu wokutywina umzimba wevalvu ukufezekisa injongo yokuvala. Ivalvu plate iphakanyisiwe ukuvula ivalvu.
Ipleyiti ethe tyaba enokujikeleza kwesiqu sevalvu kunye nokuphakamisa, enobukhulu bokuvula ukulawula ukuhamba kolwelo. Olu xhathiso lwevalvu luncinci, lusebenza kakuhle ekutywineni, lugcina abasebenzi ngokutshintsha, lufanelekile ngakumbi kwimibhobho emikhulu, kodwa ulwakhiwo lwevalvu yesango luyinkimbinkimbi ngakumbi, luneentlobo ezininzi.
Ngokwesakhiwo sesiqu, kukho isiqu esivulekileyo nesimnyama; ngokwesakhiwo sepleyiti yevalvu yahlulwe yaba yi-wedge type, parallel type, njalo njalo.
Ngokubanzi, ipleyiti yevalvu yohlobo lwe-wedge yipleyiti yevalvu enye, kwaye uhlobo oluhambelanayo lusebenzisa iipleyiti zevalvu ezimbini. Uhlobo oluhambelanayo kulula ukulwenza kunohlobo lwe-wedge, ukulungiswa kakuhle, ukusetyenziswa akulula ukuguquguquka, kodwa akufuneki kusetyenziselwe ukuthutha ukungcola kwipayipi yamanzi, ngakumbi ukuthutha amanzi, igesi ecocekileyo, ioyile kunye neminye imibhobho.
③Iivalufa zeplagi
Iplagi yaziwa kakhulu ngokuba yiCocker, kukusetyenziswa komzimba wevalvu ukufaka umngxuma ophakathi ngeplagi ekhonkrithi ukuvula nokuvala umbhobho.
Iplagi ngokweendlela ezahlukeneyo zokutywina, ingahlulwahlulwa ibe yiplagi yokupakisha, iplagi etywiniweyo ngeoyile kwaye akukho plagi yokupakisha njalo njalo. Ulwakhiwo lweplagi lulula, ubukhulu obuncinci bangaphandle, luvuleka kwaye luvale ngokukhawuleza, kulula ukuyisebenzisa, luxhathisa ulwelo oluncinci, kulula ukwenza usasazo oluneendlela ezintathu okanye ezine okanye ivalvu yokutshintsha.
Umphezulu wokutywina iiplagi mkhulu, kulula ukuwunxiba, utshintshatshintsha nzima, akukho lula ukulungisa ukuhamba kwamanzi, kodwa unqunyulwa ngokukhawuleza. Iplagi ingasetyenziselwa uxinzelelo oluphantsi kunye nobushushu okanye i-medium equlethe amasuntswana aqinileyo kumbhobho wolwelo, kodwa akufuneki isetyenziswe kumbhobho woxinzelelo oluphezulu, ubushushu obuphezulu okanye umbhobho womphunga.
④Ivalvu yoMthombo
Yeyohlobo olunye lwevalvu yeglobe. Imilo yentloko yayo yevalvu ijiyile okanye ilungelelaniswe kakuhle, nto leyo enokulawula ngcono ukuhamba kwamanzi alawulwayo okanye ukugoba kunye nokulawulwa koxinzelelo. Ivalvu ifuna ukuchaneka okuphezulu kwemveliso kunye nokusebenza kakuhle kokutywina.
Isetyenziswa kakhulu kulawulo lwezixhobo okanye ukuthatha iisampulu kunye neminye imibhobho, kodwa akufuneki isetyenziswe kwi-viscosity kunye namasuntswana aqinileyo kumbhobho.
⑤Ivalvu yeBhola
Ivalvu yebhola, eyaziwa ngokuba yivalvu yesikhungo sebhola, luhlobo lwevalvu oluphuhliswe ngokukhawuleza kwiminyaka yakutshanje. Isebenzisa ibhola enomngxuma embindini njengesikhungo sevalvu, ixhomekeke ekujikelezweni kwebhola ukulawula ukuvulwa okanye ukuvalwa kwevalvu.
Ifana neplagi, kodwa incinci kunomphezulu wokuvala weplagi, isakhiwo esincinci, itshintsha-tshintsha isindisa abasebenzi, isetyenziswa kakhulu kuneplagi.
Ngokuphuculwa kokuchaneka kokwenziwa kweevalvu zebhola, iivalvu zebhola azisetyenziswa kuphela kwimibhobho enoxinzelelo oluphantsi, kwaye zisetyenziswe kwimibhobho enoxinzelelo oluphezulu. Nangona kunjalo, ngenxa yokunqongophala kwezinto zokuvala, azifanelekanga ukusetyenziswa kwimibhobho enobushushu obuphezulu.
⑥ Iivalvu zeDiaphragm
Iivalvu ze-diaphragm zerabha ezifumaneka rhoqo. Ukuvulwa nokuvalwa kwale valve yi-diaphragm yerabha ekhethekileyo, i-diaphragm ibotshelelwe phakathi komzimba wevalvu kunye nesigqubuthelo sevalvu, kwaye idiski engaphantsi kwesiqu sevalvu icinezela i-diaphragm ngokuqinileyo emzimbeni wevalvu ukuze ivalwe.
Le valve inesakhiwo esilula, itywina elithembekileyo, kulula ukuyigcina kwaye ayixhathisi ulwelo. Ifanelekile ukuhambisa i-acidic media kunye ne-fluid pipes ezine-suspensional solids, kodwa ngokubanzi akufuneki isetyenziswe kuxinzelelo oluphezulu okanye amaqondo obushushu aphezulu kune-60 ℃ pipeline, akufuneki isetyenziswe ukuhambisa i-organic solvents kunye ne-oxidizing media enamandla kwi-pipeline.
⑦ Jonga iValve
Ikwaziwa ngokuba ziivalvu ezingabuyisiyo okanye iivalvu zokujonga. Ifakwe kumbhobho ukuze ulwelo luhambe kwicala elinye kuphela, kwaye ukuhamba okungasemva akuvumelekanga.
Luhlobo lwevalvu yokuvala ezenzekelayo, kukho ivalvu okanye ipleyiti yokushukuma emzimbeni wevalvu. Xa i-medium ihamba kakuhle, ulwelo luza kuvula ngokuzenzekelayo i-flap yevalvu; xa ulwelo lubuyela umva, ulwelo (okanye amandla entwasahlobo) luza kuvala ngokuzenzekelayo i-flap yevalvu. Ngokwesakhiwo esahlukileyo sevalvu yokujonga, yahlulwe yaba ziindidi ezimbini zohlobo lokuphakamisa kunye nolwelo lokujika.
I-lift check valve flap imile nkqo kwintshukumo yokuphakamisa itshaneli yevalvu, esetyenziswa ngokubanzi kwimibhobho ethe tye okanye ethe nkqo; i-rotary check valve valve flap idla ngokubizwa ngokuba yi-rocker plate, icala le-rocker plate liqhagamshelwe kwi-shaft, i-rocker plate ingajikeleziswa ijikeleze i-shaft, i-rotary check valve ifakwa ngokubanzi kwimibhobho ethe tye, kuba ububanzi obuncinci bungafakwa kwimibhobho ethe nkqo, kodwa qaphela ukuba ukuhamba kwamanzi akufuneki kube kukhulu kakhulu.
Ivalvu yokujonga isetyenziswa ngokubanzi kwimibhobho yemidiya ecocekileyo, equlethe amasuntswana aqinileyo kunye nokuxinana kombhobho wemidiya akufuneki kusetyenziswe. Ivalvu yokujonga uhlobo lokuphakamisa ivaliwe ingcono kunohlobo lokujikeleza, kodwa ukumelana kolwelo lwevalvu yokujonga uhlobo lokujikeleza kuncinci kunohlobo lokuphakamisa. Ngokubanzi, ivalvu yokujonga ukujikeleza ifanelekile kwimibhobho ye-caliber enkulu.
⑧Ivalvu yebhabhathane
Ivalvu yebhabhathane yidiski ejikelezayo (okanye idiski ende) yokulawula ukuvulwa nokuvalwa kombhobho. Sisakhiwo esilula, esinobukhulu obuncinci bangaphandle.
Ngenxa yesakhiwo sokutywina kunye neengxaki zezinto eziphathekayo, ukusebenza kwevalvu evaliweyo akukuhle, kuphela kulawulo lwemibhobho oluphantsi koxinzelelo, olukhulu, olusetyenziswa kakhulu ekudluliseni amanzi, umoya, igesi kunye nezinye izinto ezikwimibhobho.
⑨ Ivalvu Yokunciphisa Uxinzelelo
Kukunciphisa uxinzelelo oluphakathi ukuya kwixabiso elithile levalvu ezenzekelayo, uxinzelelo oluqhelekileyo emva kwevalvu lube ngaphantsi kwe-50% yoxinzelelo oluphambi kwevalvu, oluxhomekeke kakhulu kwi-diaphragm, intwasahlobo, i-piston kunye nezinye iindawo ze-medium ukulawula umahluko woxinzelelo phakathi kwe-flap yevalvu kunye nomsantsa wesihlalo sevalvu ukufezekisa injongo yokunciphisa uxinzelelo.
Kukho iintlobo ezininzi zeevalvu zokunciphisa uxinzelelo, i-common piston kunye ne-diaphragm type two.
⑩ ivalvu yelayini
Ukuze kuthintelwe ukugqwala kwesixhobo sombane, ezinye iivalvu kufuneka zigqunywe ngezinto ezimelana nokugqwala (ezifana nelothe, irabha, i-enamel, njl.njl.) emzimbeni wevalvu nakwintloko yevalvu, izinto zokufaka ulwelo kufuneka zikhethwe ngokwendalo yesixhobo sombane.
Ukuze kube lula ukusebenzisa i-lining, iivalvu ezifakwe i-lined zenziwe ngohlobo lwe-right-engile okanye uhlobo lwe-direct-flow.
⑪Iivalufa zokhuseleko
Ukuze kuqinisekiswe ukhuseleko lwemveliso yeekhemikhali, kwinkqubo yemibhobho ephantsi koxinzelelo, kukho isixhobo sokhuseleko esisisigxina, oko kukuthi, ukukhethwa kobukhulu obuthile beshiti yesinyithi, njengokufaka ipleyiti engabonakaliyo efakwe ekupheleni kombhobho okanye ujongano lwe-tee.
Xa uxinzelelo olukwipayipi lunyuka, iphepha liyaqhekeka ukuze kufezekiswe injongo yokunciphisa uxinzelelo. Iipleyiti zokuqhekeka zihlala zisetyenziswa kwipayipi ezinoxinzelelo oluphantsi, ezinobukhulu obukhulu, kodwa kwiipayipi ezininzi zeekhemikhali ezineevalvu zokhuseleko, iivalvu zokhuseleko ziindidi ezininzi, zinokwahlulwa ngokubanzi zibe ziindidi ezimbini, ezizezi, ezineentwasahlobo kunye neentlobo ze-lever.
Iivalvu zokhuseleko ezifakwe entwasahlobo zixhomekeke kakhulu kumandla entwasahlobo ukuze zivale. Xa uxinzelelo olukwipayipi ludlula amandla entwasahlobo, ivalvu ivulwa yi-medium, kwaye ulwelo olukwipayipi luyakhutshwa, ukuze uxinzelelo lunciphe.
Xa uxinzelelo olukwipayipi luhla ngaphantsi kwamandla entwasahlobo, ivalvu iyavala kwakhona. Iivalvu zokhuseleko zohlobo lwe-lever zixhomekeke kakhulu kumandla obunzima kwi-lever ukuze kufezekiswe ukutywinwa, umgaqo wokusebenza ngohlobo lwentwasahlobo. Ukukhethwa kwevalvu yokhuseleko, kusekelwe kuxinzelelo olusebenzayo kunye nobushushu bokusebenza ukumisela inqanaba loxinzelelo oluqhelekileyo, ubungakanani bayo be-caliber bunokubalwa ngokubhekiselele kwimimiselo efanelekileyo yokumisela.
Uhlobo lwesakhiwo sevalvu yokhuseleko, izinto zevalvu kufuneka zikhethwe ngokwendalo yendlela yokusebenza, iimeko zokusebenza. Uxinzelelo lokuqala, uvavanyo kunye nokwamkelwa kwevalvu yokhuseleko kunemiqathango ekhethekileyo, ukulinganiswa rhoqo lisebe lokhuseleko, ukuprintwa kwetywina, xa kusetyenziswa akufuneki kuhlengahlengiswe ngokungakhethiyo ukuqinisekisa ukhuseleko.
Ixesha lokuthumela: Disemba-01-2023