Ukukhetha i-valve nendawo yokubeka
(1) Umgomo wokukhetha amavalvu asetshenziswa kumapayipi okuhambisa amanzi
1.Pipe ububanzi abukho ngaphezu 50mm, kufanelekile ukusebenzisai-valve yomhlaba, ububanzi bepayipi bukhulu kuno-50mm, sebenzisai-valve yesango,uvemvane valve;
2.I-valve yokulawula kanyei-valve yomhlabakufanele isetshenziselwe ukulungisa ukugeleza nokucindezela kwamanzi;
3.Ingxenye edinga ukumelana nokugeleza kwamanzi okuncane (njengepayipi lokudonsa amanzi) kufanele isetshenziswei-valve yesango;
4.I-valve yesangofuthiuvemvane valvekufanele isetshenziswe engxenyeni yamapayipi lapho amanzi edinga ukugeleza kabili, futhi i-valve yeglobhu akufanele isetshenziswe;
5.Uvemvane kanyeama-valve ebholakufanele isetshenziselwe izingxenye ezinendawo encane yokufaka;
6. Kuyafaneleka ukusebenzisa ai-valve yomhlabaengxenyeni yepayipi evame ukuvulwa futhi ivaliwe;
7. I-valve esebenza kaningi kufanele isetshenziswe epayipini lokuphuma lephampu yamanzi esezingeni elikhulu.
(2) Ukuma kwamavalvu epayipini lokuphakela amanzi
1.Ipayipi lokuphakela amanzi lesifunda okuhlalwa kuzo lisuka engxenyeni yepayipi lokungena epayipini lokuphakela amanzi likamasipala;
I-2.Ama-nodes wenethiwekhi yamapayipi angaphandle e-annular emphakathini wokuhlala kufanele abekwe ngokuvumelana nezidingo zokuhlukaniswa.Uma isigaba sepayipi le-annular side kakhulu, kufanelekile ukusetha i-valve ehlukene;
3. Ukuqala kwepayipi legatsha noma ipayipi lasendlini elisuka epayipini elikhulu eliphakela amanzi endaweni okuhlala kuyona;
4.Ipayipi lasendlini, imitha yamanzi kanye nesikhuphukeli segatsha ngasinye (phansi kwesikhuphukeli, umkhawulo ongaphezulu nophansi wesikhuphukeli senethiwekhi yamapayipi ayindandatho aqondile);
5.Ipayipi legatsha lenethiwekhi yepayipi le-loop, ipayipi elixhumayo lenethiwekhi yamapayipi egatsha;
6.Ipayipi lokuphakela amanzi ezindlini ezindlini, ezindlini zangasese zomphakathi kanye nokunye ukufinyelela endaweni okuqalwa kuyo amapayipi okusabalalisa amanzi, Uma kunezindawo zokusabalalisa amanzi ezi-3 noma ngaphezulu epayipini legatsha lokusabalalisa amanzi;
I-7.Ipayipi yokuphuma kwepompo, ipompo yokudonsa yepompo yokunisela;
8.Indawo yokungena ethangini lamanzi, ipayipi lokuphuma, ipayipi lokudonsa amanzi;
9.Ipayipi lokugcwalisa amanzi lemishini (njenge-heater, umbhoshongo wokupholisa, njll.);
10.Ipayipi lokusabalalisa amanzi lezinto ezihlanzekile (ezifana nezindawo zokuchamela, izitsha zokugezela, izishawa, njll.);
I-11.Ngaphambi kwezinye izesekeli, njengama-valve okukhipha amandla okuzenzakalelayo, ama-valve okunciphisa ingcindezi, izinqamuli zesando samanzi, ama-gauge okucindezela, ama-sprinklers, njll., ngaphambi nangemva kwe-valve yokunciphisa ingcindezi kanye ne-backflow preventer, njll;
12.Ingxenye ephansi kakhulu yenethiwekhi yokuphakelwa kwamanzi kufanele ifakwe ivalvu yokudonsa amanzi.
(3) Ukukhethwa kwe-valve yokuhlola
Hlola ama-valvekufanele zikhethwe ngokujwayelekile ngokuya ngendawo yazo yokufaka, ingcindezi yamanzi ngaphambi kwe-valve, izidingo zokusebenza zokuvala uphawu ngemuva kokuvala kanye nobukhulu besando samanzi esibangelwa izici zokuvala:
1.Uhlobo lwe-Swing,uhlobo lwebholafuthi ama-valve okuhlola uhlobo lwe-shuttle kufanele akhethwe lapho ukucindezela kwamanzi ngaphambi kokuba i-valve incane;
2.Lapho ukuvala ukusebenza kuqinile ngemva kokuvala, ahlola i-valvengentwasahlobo yokuvala kufanele kukhethwe;
3.Lapho isando samanzi sidingeka ukuba sibe buthakathaka futhi sivalwe,Ukuvala ngokushesha i-valve yokuhlola ukuthulisanoma i-valve yokuhlola ye-Dashpot enomshini wokudambisa kufanele kukhethwe;
4. I-disc yehlola i-valvekufanele ikwazi ukuzivala ngaphansi kwesenzo samandla adonsela phansi noma entwasahlobo.
(4) Beka ama-valve okuhlola emigqeni yokuphakela amanzi
Ipayipi lesevisi;Emapayipini angenayo ama-heaters amanzi avaliwe noma ukufakwa kwamanzi;Epayipini lokuphuma kwepompo lamanzi;Amapayipi okungena nawokuphuma ahlanganiswe ethangini lamanzi, embhoshongweni wamanzi kanye nengxenye yamapayipi okukhipha amanzi echibini lasezintabeni.
Qaphela: Chahlola i-valveiyadingeka ezigabeni zamapayipi anezivimbeli zokubuyela emuva kwamapayipi.
(5)Indawo yepayipi elikhipha amanzi
1.Ama-valve okukhipha amandla okuzenzakalelayoizofakwa ekugcineni nasezindaweni eziphakeme kakhulu zamanethiwekhi okuphakelwa kwamanzi asetshenziswa ngezikhathi ezithile;
2.Ingxenye yamapayipi enethiwekhi yokuphakelwa kwamanzi enomoya osobala onqwabelanayo.I-valve yokukhipha okuzenzakalelayonoma i-valve eyenziwa ngesandla ifakwe endaweni ephakeme kakhulu yalesi sigaba ukuze kukhishwe umoya;
3. Umshini wokuphakela amanzi womoya, lapho kusetshenziswa ithangi lomoya elizenzakalelayo, indawo ephakeme kakhulu yenethiwekhi yokusabalalisa amanzi kufanele ifakwei-valve yokukhipha okuzenzakalelayo.
Izinzuzo kanye nokubi ama-valve ahlukahlukene
1.I-valve yesango
I-valve yesangoibhekisela engxenyeni yokuvala (ipuleti lesango) eduze nendawo eqondile ye-eksisi yesiteshi yevalvu, esetshenziswa kakhulu njengendawo yokusika epayipini, okungukuthi, evuleke ngokuphelele noma evalwe ngokugcwele.Ngokuvamile,ama-valve esangoayikwazi ukusetshenziselwa ukulawula ukugeleza.Ingasetshenziswa ekucindezelweni kokushisa okuphansi kungasetshenziswa ekushiseni okuphezulu nokucindezela okukhulu, futhi ngokusho kwezinto ezahlukene ze-valve.Kodwaama-valve esangongokuvamile azisetshenziselwa ukuthutha udaka nezinye imidiya esendleleni
Izinzuzo:
(1)Ukumelana noketshezi oluphansi;
(2)I-torque encane edingekayo ukuze uvule futhi uvale;
(3) Ingasetshenziswa kunethiwekhi ye-loop lapho i-medium igeleza ezinhlangothini ezimbili, okusho ukuthi, isiqondiso sokugeleza kwe-medium akukhawulelwe;
(4) Uma isivulwe ngokugcwele, ukuguguleka kwendawo evalekayo yinto esebenzayo kuncane kunaleyo yevalvu yembulunga;
(5) Isakhiwo somzimba silula, futhi inqubo yokukhiqiza ingcono;
(6) Ubude besakhiwo bufushane.
Ububi:
(1) Ubukhulu obukhulu nobude bokuvula, indawo yokufaka enkulu edingekayo;
(2)Enqubweni yokuvula nokuvala, ukulahlekelwa ukungqubuzana kwendawo yokuvala kukhulu, ngisho nasezingeni lokushisa eliphezulu kulula ukubangela isenzakalo sokubhoboza;
(3) Okujwayelekileama-valve esangobabe nesembozo sokuvala ezimbili, okwandisa ubunzima obuthile bokucubungula, ukugaya kanye nokugcinwa;
(4) Isikhathi eside sokuvula nokuvala.
2. I-valve yovemvane:
Butterfly valveiwuhlobo lwevalvu evula, ivale futhi ilungise uketshezi olushintshayo ngokuzungeza okuhambisanayo kohlobo lwediski evulekile futhi evale izingxenye ezingaba ngu-90 °.
Izinzuzo:
(1) Isakhiwo esilula, usayizi omncane, isisindo esincane, ukonga impahla;
(2) ukuvulwa nokuvala ngokushesha, ukumelana nokugeleza okuncane;
(3) Ingasetshenziselwa okuphakathi nezinhlayiya eziqinile ezimisiwe, ngokusho kwamandla okubeka uphawu kungasetshenziselwa impushana kanye ne-granular medium.Ingasetshenziselwa ukuvulwa nokuvala okuphindwe kabili kanye nokulungiswa kwepayipi lokungena komoya kanye nokususa uthuli, elisetshenziswa kabanzi kwezensimbi, imboni yokukhanya, amandla kagesi, uhlelo lwe-petrochemical lwamapayipi egesi nemigwaqo yamanzi, njll.
Ububi:
(1) Ububanzi bokulungiswa kokugeleza abukhulu, uma kuvuleke kufika ku-30%, ukugeleza kuzongena ngaphezu kwe-95%;
(2) Ngenxa yesakhiwo kanye nempahla yokuvalauvemvane valve, ayifanele izinga lokushisa eliphezulu kanye nesistimu yamapayipi okucindezela okukhulu.Izinga lokushisa elijwayelekile elingaphansi kuka-300 ℃, i-PN40 ngezansi;
(2) Ukusebenza kokuvala akulungile uma kuqhathaniswa namavalvu ebhola namavalvu eglobhu, ngakho kusetshenziswa ezindaweni lapho izidingo zokuvala zingekho phezulu kakhulu.
3. I-valve yebhola
I-valve yebholaivele isuka ku-valve yepulaki, izingxenye zayo zokuvula nokuvala ziyibhola, isebenzisa ibhola elizungeze i-axis ye-stem rotation 90 degrees ukufeza inhloso yokuvula nokuvala.I-valve yebhola esemgqeni isetshenziswa kakhulu ukunqamula, ukusatshalaliswa kanye nokushintsha isiqondiso sokugeleza kwemidiya, okuklanyelwe ukuvuleka okumise okwe-V.i-valve yebholafuthi inomsebenzi omuhle wokulawula ukugeleza.
Izinzuzo:
(1) Inokumelana nokugeleza okuphansi kakhulu (empeleni ngu-0);
(2) Ngenxa yokuthi ayibambeki emsebenzini (uma ingekho i-lubricant), ingasetshenziswa ngokuthembekile emithonjeni eyonakalisayo kanye noketshezi oluncane lokubilisa;
(3) In the emikhulu ingcindezi nezinga lokushisa uhla, angafinyelela uphawu okuphelele;
(4) Ingakwazi ukubona ukuvulwa nokuvala okusheshayo, futhi isikhathi sokuvula nokuvala kwezinye izakhiwo yi-0.05 ~ 0.1s kuphela, ukuze kuqinisekiswe ukuthi ingasetshenziswa ohlelweni oluzenzakalelayo lwebhentshi lokuhlola.Vula futhi uvale ngokushesha i-valve, ukusebenza ngaphandle komthelela;
(5) Izingxenye zokuvala eziyindilinga zingabekwa ngokuzenzakalelayo endaweni yomngcele;
(6) Isisetshenziswa esisebenzayo sivalwe ngokuthembekile nhlangothi zombili;
(7) Uma ivuleke ngokuphelele futhi ivaleke ngokugcwele, indawo yokuvala yebhola nesihlalo ihlukanisiwe nendawo ephakathi, ngakho-ke okuphakathi okudlula kuvalvu ngesivinini esikhulu ngeke kubangele ukuguguleka kwendawo evalayo;
(8) Isakhiwo esiqinile, isisindo esilula, singabhekwa njengesakhiwo se-valve esinengqondo kakhulu sohlelo oluphakathi lokushisa oluphansi;
(9) I-Symmetrical valve body, ikakhulukazi isakhiwo somzimba we-valve eshiselwe, ingamelana nokucindezeleka okuvela epayipini;
(10) Izingxenye zokuvala zingamelana nomehluko wengcindezi ephezulu lapho kuvalwa.
11Yivalvu ekahle kakhulu yamapayipi kawoyela negesi.
Ububi:
(1) Ngenxa yokuthi indandatho eyinhloko yokuvala isihlalo se-valve yi-PTFE, ayisebenzi cishe kuzo zonke izinto zamakhemikhali, futhi inezici eziphelele ze-coefficient encane yokungqubuzana, ukusebenza okuzinzile, akulula ukuguga, izinga lokushisa elibanzi nokubekwa uphawu okuhle kakhulu. ukusebenza.Kodwa-ke, izici ezibonakalayo ze-teflon, kufaka phakathi i-coefficient ephezulu yokwandisa, ukuzwela ekugelezeni okubandayo kanye nokungahambi kahle kwe-thermal, kudinga ukuthi isihlalo siklanywe ngokuzungezile lezi zici.Ngakho-ke, lapho impahla yokuvala iqina, ukwethembeka kophawu kuyaphazamiseka.Ngaphezu kwalokho, izinga lokushisa lokumelana ne-PTFE liphansi, lingasetshenziswa kuphela ngaphansi kwesimo esingaphansi kuka-180 ℃.Ngaphezu kwalokhu kushisa, into yokuvala izoguga.Endabeni yokusetshenziswa isikhathi eside, ngokuvamile isetshenziswa ku-120 ℃.
(2) Ukusebenza kwayo okulawulayo okuhlobene ne-valve yembulunga kubi kakhulu, ikakhulukazi i-valve yomoya (noma i-valve kagesi).
4. I-valve yeglobhu
Kubhekiselwa kuvalvu leyo ingxenye yokuvala ( idiski ) ihamba ngomugqa omaphakathi wesihlalo sevalvu.Ngokwalokhu kunyakaza kwe-valve disc, ukuguqulwa kokuvula isihlalo se-valve kuhambisana ne-valve disc stroke.Ngoba lolu hlobo lwe-valve stem yokuvula noma ukuvala ukushaywa lufushane, futhi lunomsebenzi wokusika othembekile kakhulu, futhi ngenxa yokuthi ukuguqulwa yokuvuleka kwesihlalo se-valve ngokulingana nokushaywa kwe-disc ye-valve, ifaneleka kakhulu ekulawuleni ukugeleza.Ngakho-ke, lolu hlobo lwe-valve lubambisene kakhulu ngokusika noma ukulawula nokudonsa.
Izinzuzo:
(1) Enqubweni yokuvula nokuvala, ngenxa yokuthi ukungqubuzana phakathi kwe-disc kanye ne-valve body sealing surface kuncane kune-valve yesango, ngakho-ke ayigugi;
(2) Ubude bokuvula ngokuvamile bungu-1/4 kuphela wesiteshi sesihlalo sevalvu, ngakho buncane kakhulu kunevalvu yesango;
(3) Ngokuvamile kunendawo eyodwa kuphela yokuvala emzimbeni we-valve kanye ne-valve disc, ngakho inqubo yokukhiqiza iba ngcono futhi kulula ukuyinakekela;
(4) Ngenxa yokuthi isigcwalisi sawo ngokuvamile siyingxube ye-asbestos negraphite, ngakho izinga lokumelana nezinga lokushisa liphakeme.Ama-valve omusi ajwayelekile asebenzisa ama-globe valves.
Ububi:
(1) ngoba i-medium ngokusebenzisa isiqondiso sokugeleza kwe-valve ishintshile, ngakho-ke ukuphikiswa okuncane kokugeleza kwe-i-valve yokumisaliphakeme kunezinye izinhlobo eziningi zamavalvu;
(2) Ngenxa ye-stroke ende, isivinini sokuvula sihamba kancane kune-valve yebhola.
5. I-valve yokuxhuma
Kuwuhlobo lwevalvu ingxenye evalayo eyivalvu ejikelezayo emise okwe-plunger, futhi imbobo yesiteshi kupulaki yevalvu ixhunywe noma ihlukaniswe nembobo yesiteshi emzimbeni wevalvu ngokuzungezisa okungu-90 ° ukuze kubonakale ukuvulwa noma ukuvala.Ukuma kwepulaki ye-valve kungaba yi-cylindrical noma i-conical.Umgomo wayo ngokuyisisekelo ufana ne-valve yebhola.I-valve yebhola ithuthukiswa ngesisekelo se-valve yepulaki.Isetshenziselwa ikakhulukazi ukuxhashazwa kwe-oilfield kanye nasembonini ye-petrochemical.
6. I-valve yokuphepha
Isho idivayisi yokuvikela ukucindezela ngokweqile esitsheni sokucindezela, okokusebenza noma ipayipi.Lapho ingcindezi entweni esetshenziswayo, esitsheni noma epayipini ikhuphuka ngaphezu kwenani elivumelekile, ivalvu ivuleka ngokuzenzakalelayo bese iphuma ngokugcwele ukuze kuvinjelwe ukucindezela kwezinto zokusebenza, isitsha noma ipayipi ukuthi ingaqhubeki nokukhuphuka;lapho ingcindezi iyancipha ibe yinani elicacisiwe, i-valve kufanele ivalwe ngokuzenzakalelayo ngesikhathi ukuze kuvikelwe ukusebenza okuphephile kwemishini, iziqukathi noma amapayipi.
7. I-valve yesicupho se-steam
Ekudluliseleni isitimu, umoya ocindezelwe kanye neminye imidiya, kuzoba nokwakheka kwamanzi afingqiwe, ukuze kuqinisekiswe ukusebenza kahle nokusebenza okuphephile kwedivayisi, kufanele sikhiphe le midiya engenamsebenzi neyingozi ngesikhathi ukuze siqinisekise ukusetshenziswa nokusetshenziswa kwemishini. idivayisi.Inemisebenzi elandelayo :
(1) Ingakwazi ukuqeda ngokushesha amanzi okujiya;
(2) ukuvimbela ukuvuza kwesitimu;
(3) Ungafaki umoya namanye amagesi angacondensable.
8. I-valve yokunciphisa ingcindezi
Kuyi-valve eyehlisa ukucindezela kokungena ekucindezelekeni okudingekile ngokulungisa, futhi incike emandleni omthombo ngokwawo ukuze kugcinwe ukucindezela kokuphumayo kuzinzile ngokuzenzakalelayo.
9. Hlola i-valve
Ihlola i-valveiyi-valve ezenzakalelayo, evuleka ngokuzenzakalelayo futhi ivalwe amandla akhiqizwa ukugeleza kwe-medium ngokwayo epayipini.Hlola i-valveisetshenziswa ohlelweni lwamapayipi, umsebenzi wayo oyinhloko ukuvimbela ukugeleza emuva okuphakathi, ukuvimbela ukushintshwa kwepompo kanye nokushayela imoto, kanye nokuvuza kwe-container medium.Hlola ama-valveingase futhi isetshenziselwe ukunikeza amasistimu asizayo lapho ukucindezela kungase kukhuphuke ngaphezu kokucindezela kwesistimu.Ingahlukaniswa ngokuyinhloko ibe uhlobo lokujikijela ( oluzungezayo ngokuya maphakathi namandla adonsela phansi ) kanye nohlobo lokuphakamisa ( oluhambayo ku-eksisi).
Isikhathi sokuthumela: Jan-06-2023