Ukukhetha i-valve kunye nendawo yokumisela
(1) Umgaqo-siseko wokhetho lweevalvu ezisetyenziswa kwimibhobho yonikezelo lwamanzi
I-1.I-diameter yePipe ayikho ngaphezu kwe-50mm, kufanelekile ukusebenzisa iivalve yeglowubhu, ububanzi bombhobho mkhulu kuno-50mm, sebenzisaivalve yesango,ivelufa butterfly;
2.Ivalve yokulawula kunyeivalve yeglowubhukufuneka isetyenziswe ukulungisa ukuhamba kunye noxinzelelo lwamanzi;
3.Inxalenye efuna ukuxhathisa ukuhamba kwamanzi amancinci (njengombhobho wokufunxa impompo yamanzi) kufuneka isetyenzisweivalve yesango;
4.Ivalve yesangokwayeivelufa butterflykufuneka isetyenziswe kwicandelo lombhobho apho amanzi afuna ukuhamba ngokuphindwe kabini, kunye nevalve yeglowubhu kufuneka ingasetyenziswa;
5.Butterfly kunyeiivalve zebholakufuneka isetyenziswe kwiindawo ezinendawo encinci yokufakela;
6. Kufanelekile ukusebenzisa aivalve yeglowubhukwicandelo lombhobho elihlala livuliwe kwaye livaliwe;
7. Ivalve esebenza ngezinto ezininzi kufuneka isetyenziswe kumbhobho wokukhupha wempompo enkulu yamanzi.
(2) Indawo ezimi kuyo izivalo kumbhobho wonikezelo lwamanzi
1. Umbhobho wonikezelo lwamanzi wesithili esihlala abantu usuka kwicandelo lombhobho wokungena kumbhobho wonikezelo lwamanzi kamasipala;
2.I-nodes yomnatha wombhobho we-annular yangaphandle kwindawo yokuhlala kufuneka ibekwe ngokweemfuno zokuhlukana.Xa icandelo lombhobho we-annular lide kakhulu, lifanelekile ukuseta i-valve edibeneyo;
3.Ukuqala kombhobho wesebe okanye umbhobho wendlu ukusuka kumbhobho ongundoqo wokubonelela ngamanzi kwisithili sokuhlala;
4.Umbhobho wasekhaya, imitha yamanzi kunye nesikhuphukeli sesebe ngasinye (ezantsi kwesikhuphukeli, phezulu nasezantsi ekupheleni kombhobho weringi othe nkqo wothungelwano lwesikhuphukeli);
5. Umbhobho wesebe lombhobho wombhobho womnatha, umbhobho odibanisayo wenethiwekhi yombhobho wesebe;
6.Imibhobho yonikezelo lwamanzi ngaphakathi ezindlini, kwizindlu zangasese zikawonke-wonke kunye nolunye ufikelelo kumbhobho wokuhambisa amanzi, Xa kukho iindawo zokuhambisa amanzi ezi-3 okanye ngaphezulu kumbhobho wesebe lokuhambisa amanzi;
7.Umbhobho wokuphuma wempompo, impompo yokufunxa yempompo yokunkcenkceshela;
8.Indawo yokungena kwitanki yamanzi, umbhobho ophumayo, umbhobho wokukhupha amanzi;
9.Ipayipi yokuzalisa amanzi kwizixhobo (ezifana ne-heater, inqaba yokupholisa, njl.);
10. Umbhobho wokuhambisa amanzi kwizixhobo zococeko (ezifana nemichamo, izitya zokuhlambela, iishawari, njl.);
I-11.Ngaphambi kwezinye izixhobo, ezifana ne-valve yokukhupha ngokuzenzekelayo, i-valve yokunciphisa uxinzelelo, i-hammer eliminators yamanzi, i-pressure gauges, i-sprinklers, njl., ngaphambi nangemva kwe-valve yokunciphisa uxinzelelo kunye ne-backflow preventer, njl.
12.Elona candelo lisezantsi lomnatha wonikezelo lwamanzi kufuneka lixhotyiswe ngevalve yokukhupha amanzi.
(3) Ukukhethwa kwevalve yokukhangela
Khangela iivalvuNgokuqhelekileyo kufuneka zikhethwe ngokwendawo yazo yokufakela, uxinzelelo lwamanzi phambi kwevalve, iimfuno zokusebenza zokutywina emva kokuvala kunye nobukhulu behamile yamanzi ebangelwa zizinto zokuvala:
1.Ujingi uhlobo,uhlobo lwebholakunye neevalve zokukhangela uhlobo lwe-shuttle kufuneka zikhethwe xa uxinzelelo lwamanzi phambi kokuba i-valve incinci;
2.Xa ukusebenza kokutywinwa kungqongqo emva kokuvalwa, akhangela ivalvengomthombo wokuvala kufuneka kukhethwe;
3.Xa isando samanzi kufuneka sibe buthathaka kwaye sivalwe,Ukuvala ngokukhawuleza ivalve yokujonga ukuthulisaokanye ivalve yokujonga iDashpot enesixhobo sokumanzisa kufuneka ikhethwe;
4.Idiski yekhangela ivalvekufuneka ikwazi ukuzivala ngokwayo phantsi kwesenzo somxhuzulane okanye amandla entwasahlobo.
(4) Misela iivalvu zokukhangela kwiintambo zonikezelo lwamanzi
Umbhobho wenkonzo;Kwimibhobho yokungena yezifudumezi zamanzi ezivaliweyo okanye ukufakelwa kwamanzi;Kumbhobho wokukhupha impompo yamanzi;Imibhobho yokungena neyokuphuma idityaniswe kwitanki yamanzi, kwinqaba yamanzi nakwicandelo lemibhobho ephumayo kwidama eliphakamileyo.
Qaphela: Hayikhangela ivalveiyafuneka kumacandelo emibhobho axhotyiswe ngemibhobho yokuthintela ukuphuma ngasemva.
(5)Indawo yesixhobo sokukhupha umbhobho wonikezelo lwamanzi
1.Iivalve zokukhupha ngokuzenzekelayoiya kufakwa eziphelweni nakwezona ndawo ziphezulu zothungelwano lonikezelo lwamanzi olusetyenziswa ngamaxesha athile;
2.Icandelo lombhobho lothungelwano lonikezelo lwamanzi kunye nokuqokelelana komoya okucacileyo.Ivalve yokukhupha ngokuzenzekelayookanye ivalve yezandla ifakwe kwincopho yeli candelo ukuze ikhuphe;
3. Isixhobo sokuhambisa amanzi nge-pneumatic, xa kusetyenziswa itanki yomoya ezenzekelayo, eyona ndawo iphezulu yothungelwano lokuhambisa amanzi kufuneka ixhotyisweivelufa yokukhupha ngokuzenzekelayo.
Izinto eziluncedo kunye nokungalunganga kweevalve ezahlukeneyo
1.Ivalve yesango
Ivalve yesangoibhekisa kwindawo yokuvala (ipleyiti yesango) ecaleni kwecala elithe nkqo le-axis yomjelo wevalve, esetyenziswa ikakhulu njengendlela yokusika kumbhobho, oko kukuthi, evuleke ngokupheleleyo okanye evalwe ngokupheleleyo.Ngokubanzi,iivalve zesangoayinakusetyenziswa ukulawula ukuhamba.Ingasetyenziswa kwiqondo lokushisa eliphantsi lingasetyenziselwa ukushisa okuphezulu kunye noxinzelelo oluphezulu, kwaye ngokwezinto ezahlukeneyo zevalve.Kodwaiivalve zesangoazisetyenziswa ngokubanzi ukuhambisa udaka kunye nezinye izinto zosasazo kumbhobho
Izinto eziluncedo:
(1)Ulwelo oluphantsi lokunganyangeki;
(2)Itorque encinci efunekayo ekuvuleni nasekuvaleni;
(3) Inokusetyenziswa kwinethiwekhi ye-loop apho i-medium ihamba ngeendlela ezimbini, oko kukuthi, i-flow direction ye-medium ayithintelwanga;
(4) Xa ivulwe ngokupheleleyo, ukhukuliseko lomphezulu wokutywina luncinane kunolo lwevalve yeglowubhu;
(5) Isakhiwo somzimba silula, kwaye inkqubo yokuvelisa ingcono;
(6) Ubude besakhiwo bufutshane.
Izinto ezingeloncedo:
(1)Imilinganiselo emikhulu kunye nobude bokuvula, indawo yofakelo enkulu efunekayo;
(2)Kwinkqubo yokuvula nokuvala, ilahleko yefriction yendawo yokutywina inkulu, nokuba kubushushu obuphezulu kulula ukubangela isenzeko sokurhabula;
(3) Ngokubanziiivalve zesangozibe namaqweqwe amabini okutywina, okwandisa ubunzima bokulungisa, ukucola nokulungisa;
(4) Ixesha elide lokuvula nokuvala.
2. Ivalve yebhabhathane:
Ivalve yebhabhathaneluhlobo lwevalvu evula, ivale kwaye ilungelelanise umjelo we-fluid ngokuphindaphinda ukujikeleza kohlobo lwediski evulekileyo kwaye ivale malunga ne-90 °.
Izinto eziluncedo:
(1) Isakhiwo esilula, ubungakanani obuncinci, ubunzima obulula, ukugcinwa kwezinto eziphathekayo;
(2) ukuvulwa ngokukhawuleza kunye nokuvala, ukuchasana nokuhamba okuncinci;
(3) Ingasetyenziselwa okuphakathi kunye namasuntswana aqinileyo amisiweyo, ngokwamandla omgangatho wokutywina nawo angasetyenziselwa umgubo kunye ne-granular medium.Ingasetyenziselwa ukuvulwa kwe-bidirectional kunye nokuvala kunye nohlengahlengiso lwe-ventilation kunye nombhobho wokususa uthuli, osetyenziswa kakhulu kwi-metallurgy, imboni yokukhanya, amandla ombane, inkqubo yepetrochemical yemibhobho yegesi kunye neendlela zamanzi, njl.
Izinto ezingeloncedo:
(1) Uluhlu lohlengahlengiso lokuhamba alukho lukhulu, xa luvulekile ukuya kwi-30%, ukuhamba kuya kungena ngaphezu kwe-95%;
(2) Ngenxa yesakhiwo kunye nemathiriyeli yokutywina yeivelufa butterfly, ayifanelekanga kwiqondo lokushisa eliphezulu kunye nenkqubo yepayipi yoxinzelelo oluphezulu.Ubushushu bokusebenza ngokubanzi ngaphantsi kwe300℃, PN40 ngezantsi;
(2) Ukusebenza kokutywina kumbi xa kuthelekiswa neevalvu zebhola kunye neevalvu zeglowubhu, ngoko ke isetyenziswa kwiindawo apho iimfuno zokutywina zingekho phezulu kakhulu.
3. Ivalve yebhola
Ivalve yebholaiguqulwe kwi-valve yeplagi, iinxalenye zayo zokuvula kunye nokuvala yibhola, isebenzisa ibhola ejikeleze i-axis ye-stem rotation 90 degrees ukufezekisa injongo yokuvula nokuvala.Ivalve yebhola kumbhobho isetyenziswa ikakhulu ukusika, ukusasazwa kunye nokutshintsha indlela yokuhamba kwemidiya, eyilelwe kwindawo yokuvula eyi-V.ivalve yebholakwakhona inomsebenzi wokulawula ukuhamba kakuhle.
Izinto eziluncedo:
(1) Unokumelana nokuhamba okuphantsi (okwenene i-0);
(2) Ngenxa yokuba ayibambekanga emsebenzini (ngokungabikho kwe-lubricant), inokuthi isetyenziswe ngokuthembekileyo kwimidiya ephazamisayo kunye nolwelo oluphantsi lokubilisa;
(3) Kuluhlu olukhulu loxinzelelo kunye nobushushu, inokufikelela kwitywina elipheleleyo;
(4) Inokuqonda ukuvulwa ngokukhawuleza kunye nokuvala, kwaye ixesha lokuvula kunye nokuvalwa kwezinye izakhiwo kuphela i-0.05 ~ 0.1s, ukwenzela ukuba kuqinisekiswe ukuba ingasetyenziselwa inkqubo yokuzenzekelayo yebhentshi yokuvavanya.Vula ngokukhawuleza kwaye uvale i-valve, ukusebenza ngaphandle kwempembelelo;
(5) Iindawo zokuvala ezingqukuva zinokubekwa ngokuzenzekelayo kwindawo yomda;
(6) Isixhobo sokusebenza sitywinwe ngokuthembekileyo kumacala omabini;
(7) Xa ivuleke ngokupheleleyo kwaye ivalwe ngokupheleleyo, umphezulu wokutywina webhola kunye nesihlalo ubekwe wodwa kwindawo ephakathi, ngoko ke isiphakathi esidlula kwivalve ngesantya esiphezulu asiyi kubangela ukhukuliseko lomphezulu wokutywina;
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(9) I-Symmetrical valve body, ngokukodwa isakhiwo somzimba wevalve edibeneyo, inokumelana noxinzelelo oluvela kumbhobho;
(10) Amalungu okuvala angakwazi ukumelana nokuhluka koxinzelelo oluphezulu xa evala.
(11) Ivalve yebhola yevalve edityaniswe ngokupheleleyo ingangcwatywa ngokuthe ngqo phantsi komhlaba, ukuze isivalo sangaphakathi singakhukuliseka, kwaye ubomi benkonzo bungafikelela kwiminyaka engama-30.Yeyona valve ifanelekileyo kwimibhobho yeoli neyegesi.
Izinto ezingeloncedo:
(1) Ngenxa yokuba eyona nto iphambili yokutywina isihlalo sevalve yi-PTFE, ayisebenzi phantse kuzo zonke izinto zekhemikhali, kwaye ineempawu ezibanzi ze-coefficient encinci ye-friction, ukusebenza okuzinzileyo, akukho lula ukuguga, uluhlu olubanzi lobushushu kunye nokutywinwa okugqwesileyo. ukusebenza.Nangona kunjalo, iipropathi ezibonakalayo ze-teflon, kubandakanywa i-coefficient ephezulu yokwandisa, uvakalelo lokuhamba okubandayo kunye nokungahambi kakuhle kwe-thermal, kufuna ukuba isihlalo siyilwe malunga nezi mpawu.Ngoko ke, xa izinto zokutywinwa ziqina, ukuthembeka kwesitywina kuphazamisekile.Ngaphezu koko, inqanaba lokumelana nobushushu be-PTFE liphantsi, linokusetyenziswa kuphela phantsi kwemeko engaphantsi kwe-180℃.Ngaphezulu kolu bushushu, izinto zokutywina ziya kuguga.Kwimeko yokusetyenziswa kwexesha elide, isetyenziswa ngokubanzi kwi-120 ℃.
(2) Ukulawula ukusebenza kwayo xa kuthelekiswa nevalve yeglowubhu kubi ngakumbi, ngakumbi ivalve yepneumatic (okanye ivelufa yombane).
4. Ivalve yeglowubhu
Ibhekisa kwivalvu ethi indawo yokuvala (idiski) ihamba ngomgca osembindini wesitulo sevalve.Ngokwale ntshukumo yediski ye-valve, ukutshintshwa kwe-valve yokuvula isihlalo kuhambelana ne-valve disc stroke.Ngenxa yokuba olu hlobo lwe-valve stem yokuvula okanye i-stroke yokuvala ifutshane, kwaye inomsebenzi othembekileyo wokusika, kwaye ngenxa yokuba utshintsho yokuvula isihlalo sevalve ilingana ne-stroke ye-valve disc, ifaneleke kakhulu kulawulo lokuhamba.Ngoko ke, olu hlobo lwevalve lubambisene kakhulu ngokusika okanye ukulawula kunye nokubetha.
Izinto eziluncedo:
(1) Kwinkqubo yokuvula kunye nokuvala, ngenxa yokuba ingxabano phakathi kwediski kunye ne-valve yomzimba wokutywina incinci kunevalve yesango, ngoko ke ayigugi;
(2) Umphakamo wokuvula ngokubanzi kuphela yi-1/4 yesitulo sevalve yesitulo, ngoko ke incinci kakhulu kunevalve yesango;
(3) Ngokuqhelekileyo kukho indawo enye yokutywina kwi-valve body kunye ne-valve disc, ngoko ke inkqubo yokuvelisa ingcono kwaye kulula ukuyigcina;
4Iivalvu zomphunga jikelele zisebenzisa iivalvu zeglowubhu.
Izinto ezingeloncedo:
(1) ngenxa yokuba i-medium kwi-valve flow direction itshintshile, ngoko ke ubuncinci bokuchasana nokuhamba kwe-ivalve yokumisaiphezulu kunezinye iindidi ezininzi zeevalvu;
(2) Ngenxa yokubetha ixesha elide, isantya sokuvula sicotha kunevalve yebhola.
5. Ivalve yokuplaga
Luhlobo lwevalve ukuba indawo yokuvala ibe yivalve ejikelezayo emile okwe-plunger, kwaye izibuko letshaneli kwiplagi yevalvu iqhagamshelene okanye yahlulwe kwizibuko lejelo kumzimba wevalvu ngokujikeleza kwe-90 ° ukuqonda ukuvulwa okanye ukuvala.Ubume beplagi yevalve ingaba yi-cylindrical okanye i-conical.Umgaqo wayo ngokusisiseko ufana nevalve yebhola.Ivalve yebhola iphuhliswa ngesiseko sevalve yeplagi.Isetyenziselwa ikakhulu ukuxhaphaza i-oilfield kunye nakwishishini lepetrochemical.
6. Ivalve yokhuseleko
Ibhekiselele kwisixhobo sokukhusela uxinzelelo olugqithisileyo kwisitya soxinzelelo, izixhobo okanye umbhobho.Xa uxinzelelo kwisixhobo, isitya okanye umbhobho ukhuphuka ngaphezu kwexabiso elivumelekileyo, i-valve ivula ngokuzenzekelayo kwaye ikhuphe ngokupheleleyo ukukhusela uxinzelelo lwesixhobo, isitya okanye umbhobho ukuba ungaqhubeki nokunyuka;xa uxinzelelo luyancipha kwixabiso elichaziweyo, i-valve kufuneka ivalwe ngokuzenzekelayo ngexesha lokukhusela ukusebenza okukhuselekileyo kwezixhobo, izitya okanye iipayipi.
7. Ivalve yomgibe womphunga
Ekuhambiseni umphunga, umoya ocinezelweyo kunye neminye imithombo yeendaba, kuya kubakho ukubunjwa kwamanzi adibeneyo, ukuze kuqinisekiswe ukusebenza kakuhle kunye nokusebenza ngokukhuselekileyo kwesixhobo, kufuneka sikhuphe ezi zixhobo zingenamsebenzi kwaye ziyingozi ngexesha lokuqinisekisa ukusetyenziswa kunye nokusetyenziswa kwesixhobo. isixhobo.Inemisebenzi elandelayo :
(1) Inokuphelisa ngokukhawuleza amanzi adibeneyo;
(2) ukuthintela ukuvuza komphunga;
(3) Ungabandakanyi umoya kunye nezinye iigesi ezingacondensable.
8. Ivalve yokunciphisa uxinzelelo
Yivalve enciphisa uxinzelelo lokungena kuxinzelelo lokuphuma olufunekayo ngohlengahlengiso, kwaye ixhomekeke kumandla ophakathi ngokwawo ukugcina uxinzelelo lokuphuma luzinzile ngokuzenzekelayo.
9. Khangela ivalve
Ikhangela ivalveyivalve ezenzekelayo, evulwa ngokuzenzekelayo kwaye ivalwe ngamandla okwenziwa kukuhamba kwe-medium ngokwayo kumbhobho.Khangela ivalveisetyenziswa kwinkqubo yemibhobho, umsebenzi wayo ophambili kukuthintela ukubuya umva okuphakathi, ukuthintela impompo kunye nokuqhuba ukuguqulwa kwemoto, kunye nokuvuza kwesixhobo esiphakathi.Khangela iivalvuingasetyenziselwa ukubonelela ngeenkqubo ezincedisayo apho uxinzelelo lunokwenyuka ngaphezu koxinzelelo lwenkqubo.Inokwahlulwa ngokuyintloko ibe luhlobo lwe-swing ( olujikelezayo ngokweziko lomxhuzulane) kunye nohlobo lokuphakamisa ( oluhamba nge-axis ).
Ixesha lokuposa: Jan-06-2023