1. Ivalvu yesango: Ivalvu yesango ibhekisela kuvalvu ilungu layo elivalayo (isango) elihamba ngendlela eqondile ye-eksisi yesiteshi. Ngokuyinhloko isetshenziselwa ukusika i-medium epayipini, okungukuthi, ivule ngokugcwele noma ivalwe ngokugcwele. Ama-valve esango avamile awakwazi ukusetshenziselwa ukulawula ukugeleza. Ingasetshenziswa ekushiseni okuphansi nokucindezela okuphezulu kanye nokushisa okuphezulu nokucindezela okukhulu, futhi ingasetshenziswa ngokusho kwezinto ezahlukene ze-valve. Kodwa-ke, ama-valve esango ngokuvamile awasetshenziswa kumapayipi athutha imidiya njengodaka.

inzuzo:
1. Ukumelana noketshezi oluncane;
2. I-torque edingekayo yokuvula nokuvala incane;
3. Ingasetshenziswa ephayiphini lenethiwekhi eyindandatho lapho okuphakathi kugeleza ezinhlangothini ezimbili, okusho ukuthi, ukugeleza komzila akukhawulelwe;
4. Uma ivuleke ngokuphelele, indawo yokuvala iguguleka kancane isisetshenziswa sokusebenza kunevalvu yembulunga;
5. Ukuma nokwakheka kulula futhi inqubo yokukhiqiza yinhle;
6. Ubude besakhiwo bufushane.

ukushiyeka:
1. Ubukhulu obuphelele nobude bokuvula kukhulu, futhi indawo yokufaka edingekayo nayo inkulu;
2. Ngesikhathi sokuvula nokuvala, indawo yokuvala i-sealing ixutshwe ngokuqhathaniswa, futhi ukungqubuzana kukhulu kakhulu, futhi kulula ukubangela ukuhuzuka ngisho nasezingeni eliphezulu lokushisa;
3. Ngokuvamile, ama-valve esango anezindawo ezimbili zokuvala, ezengeza ubunzima obuthile ekucubunguleni, ekugayeni nasekunakekeleni;
4. Isikhathi sokuvula nesokuvala side.

2. Ivalve yovemvane: Ivalve yovemvane iwuhlobo lwevalvu esebenzisa uhlobo lwediski evula nezingxenye ezivalayo ukuze ijikele emuva naphambili cishe ngo-90° ukuze ivuleke, ivale futhi ilungise uketshezi oludlulayo.

inzuzo:
1. Isakhiwo esilula, usayizi omncane, isisindo esincane, izinto ezisetshenziswayo ezincane, ezingasetshenzisiwe kuma-valve anobubanzi obukhulu;
2. Ukuvula nokuvala ngokushesha, ukumelana nokugeleza okuncane;
3. Ingasetshenziselwa imidiya enezinhlayiya eziqinile ezimisiwe, futhi ingase isetshenziselwe i-powdery ne-granular media ngokusho kwamandla okubeka uphawu. Ilungele ukuvulwa nokuvala ngezindlela ezimbili kanye nokulungiswa kwamapayipi komoya kanye nokususa uthuli, futhi isetshenziswa kabanzi kumapayipi egesi nasemigwaqweni yamanzi ku-metallurgy, imboni yokukhanya, amandla kagesi, izinhlelo ze-petrochemical, njll.

ukushiyeka:
1. Ibanga lokulungiswa kokugeleza alilikhulu. Lapho ukuvulwa kufinyelela ku-30%, ukugeleza kuzongena ngaphezu kwama-95%.
2. Ngenxa yomkhawulo wesakhiwo se-butterfly valve kanye nempahla yokuvala, ayifanele izinga lokushisa eliphezulu kanye nesistimu yamapayipi okucindezela okukhulu. Izinga lokushisa elijwayelekile lokusebenza lingaphansi kuka-300°C futhi lingaphansi kwe-PN40.
3. Ukusebenza kokuvala kubi kakhulu kunamavalvu ebhola nama-globe valves, ngakho-ke kusetshenziswa ezindaweni lapho izidingo zokuvala zingekho phezulu kakhulu.

3. I-valve yebhola: Ivele ku-valve yepulaki. Ingxenye yayo yokuvula neyokuvala iyindilinga, futhi umzimba wokuvala uzungeziswe ngo-90° eduze kwe-axis yesiqu se-valve ukufeza injongo yokuvula nokuvala. I-valve yebhola isetshenziselwa kakhulu ukusika, ukusabalalisa kanye nokushintsha indlela yokuhamba kwento ephakathi epayipini, kanye nevalve yebhola eklanywe ngokuvuleka okumise okuka-V nayo inomsebenzi omuhle wokulawula ukugeleza.

inzuzo:
1. Inokumelana nokugeleza okuphansi kakhulu (empeleni ngu-0);
2. Ngenxa yokuthi ngeke ibambeke lapho isebenza (kumafutha), ingasetshenziswa ngendlela ethembekile emithonjeni eqala ukugqwala kanye noketshezi oluncane lokubilisa;
3. Ebangeni elikhudlwana lokucindezela kanye nezinga lokushisa, lingafinyelela ukubekwa uphawu okuphelele;
4. Ingabona ukuvulwa nokuvala ngokushesha. Isikhathi sokuvula nokuvala kwezinye izakhiwo yi-0.05 ~ 0.1s kuphela, ukuze kuqinisekiswe ukuthi ingasetshenziswa ohlelweni oluzenzakalelayo lwebhentshi lokuhlola. Lapho uvula futhi uvala i-valve ngokushesha, akukho ukushaqeka ekusebenzeni.
5. Ilungu elivala eliyisiyingi lingamiswa ngokuzenzakalelayo endaweni yomngcele;
6. Indawo yokusebenza ivalwe ngokuthembekile nhlangothi zombili;
7. Uma ivuleke ngokuphelele futhi ivaleke ngokugcwele, indawo yokuvala yebhola kanye nesihlalo sevalvu ihlukaniswa nendawo, ngakho-ke okuphakathi okudlula kuvalvu ngesivinini esikhulu ngeke kubangele ukuguguleka kwendawo yokuvala;
8. Ngesakhiwo esihlangene nesisindo esilula, singabhekwa njengesakhiwo se-valve esinengqondo kakhulu sohlelo oluphakathi lokushisa oluphansi;
9. Umzimba we-valve unokulinganisa, ikakhulukazi isakhiwo somzimba we-valve eshiselwe, engakwazi ukumelana kahle nengcindezi yepayipi;
10. Izingxenye zokuvala zingamelana nomehluko wengcindezi ephezulu lapho kuvalwa.
11. I-valve yebhola enomzimba oshiselwe ngokugcwele ingangcwatshwa ngokuqondile emhlabathini, ukuze izingxenye zangaphakathi ze-valve zingagqwali, futhi impilo yesevisi ephezulu ingafinyelela iminyaka engu-30. Yivalvu ekahle kakhulu yamapayipi kawoyela negesi yemvelo.

ukushiyeka:
1. Ngenxa yokuthi indandatho yokuvala isihlalo ebaluleke kakhulu ye-valve yebhola i-polytetrafluoroethylene, ayisebenzi cishe kuzo zonke izinto zamakhemikhali, futhi ine-coefficient encane yokungqubuzana, ukusebenza okuzinzile, akulula ukuguga, ububanzi besicelo sokushisa kanye nokusebenza kokuvala Izici ezinhle kakhulu ezibanzi. . Kodwa-ke, izici ezibonakalayo ze-PTFE, okuhlanganisa i-coefficient ephezulu yokunwetshwa, ukuzwela ekugelezeni okubandayo kanye nokungahambi kahle kwe-thermal, kudinga ukuthi izigxivizo zezihlalo kufanele zenziwe ngokuzungeze lezi zakhiwo. Ngakho-ke, lapho impahla yokuvala iqina, ukwethembeka kophawu kuyaphazamiseka. Ngaphezu kwalokho, i-PTFE inezinga lokushisa eliphansi futhi ingasetshenziswa kuphela ngaphansi kuka-180°C. Ngaphezu kwalokhu kushisa, into yokuvala izoguga. Endabeni yokusetshenziswa isikhathi eside, ngokuvamile ayisetshenziswa ku-120°C.
2. Ukusebenza kwayo kokulungiswa kubi kakhulu kune-valve yembulunga, ikakhulukazi i-valve yomoya (noma i-valve kagesi).

4. Ivalvu yeglobhu: isho ivalvu ilungu layo elivalayo (idiski) elihamba phakathi nendawo yesihlalo sevalvu. Ngokwefomu lokunyakaza kwe-disc, ukuguqulwa kwe-port yesihlalo se-valve kuhambisana nokushaywa kwe-disc. Ngenxa yokuthi ukuvuleka noma ukuvala ukushaywa kwesiqu se-valve yalolu hlobo lwe-valve kufushane, futhi kunomsebenzi othembeke kakhulu wokunqamula, futhi ngenxa yokuthi ukuguqulwa kokuvuleka kwesihlalo se-valve kuhambisana nokushaywa kwe-valve disc, ifaneleka kakhulu ukulungiswa kokugeleza. Ngakho-ke, lolu hlobo lwe-valve lufaneleka kakhulu ukusika noma ukuqondisa nokudonsa.

inzuzo:
1. Phakathi nenqubo yokuvula nokuvala, njengoba amandla okungqubuzana phakathi kwe-disc kanye nendawo yokuvala yomzimba we-valve mancane kunaleyo ye-valve yesango, ayiguquki.
2. Ukuphakama kokuvula ngokuvamile kungu-1/4 kuphela wesiteshi sesihlalo, ngakho-ke kuncane kakhulu kune-valve yesango;
3. Ngokuvamile kunendawo eyodwa yokuvala emzimbeni we-valve kanye ne-valve disc, ngakho inqubo yokukhiqiza ihle kakhulu futhi kulula ukuyigcina.
4. Njengoba isigcwalisi ngokuvamile siyingxube ye-asbestos ne-graphite, izinga lokumelana nezinga lokushisa liphakeme kakhulu. Ngokuvamile ama-valves e-steam asebenzisa ama-globe valves.

ukushiyeka:
1. Njengoba ukugeleza komzila we-medium nge-valve kushintshile, ukuphikiswa kokugeleza okuncane kwe-valve yembulunga nakho kuphakeme kunezinye izinhlobo eziningi zamavalvu;
2. Ngenxa yokushaywa isikhathi eside, isivinini sokuvula sihamba kancane kunaleso se-valve yebhola.

5. I-valve yokuxhuma: Ibhekisela ku-valve ejikelezayo enengxenye yokuvala emise okwe-plunger. Ngokuzungezisa okungu-90°, imbobo yesiteshi kupulaki ye-valve ixhunyiwe noma ihlukaniswe nembobo yesiteshi emzimbeni wevalvu ukuze kubonakale ukuvulwa noma ukuvala. Ukuma kwepulaki ye-valve kungaba yi-cylindrical noma i-conical. Isimiso saso ngokuyisisekelo sifana naleso se-valve yebhola. I-valve yebhola ithuthukiswa ngesisekelo se-valve yepulaki. Isetshenziswa kakhulu ekuxhashazweni kwe-oilfield futhi nasembonini ye-petrochemical.

6. I-valve yokuphepha: isetshenziswa njengethuluzi lokuvikela ukucindezela ngokweqile emikhunjini yokucindezela, okokusebenza noma amapayipi. Lapho ingcindezi empahleni, esitsheni noma epayipini ikhuphuka ngaphezu kwenani elivumelekile, ivalvu izovuleka ngokuzenzakalelayo bese iphuma ngokugcwele ukuvimbela okokusebenza, isitsha noma ipayipi kanye nengcindezi ukuthi ingaqhubeki nokukhuphuka; lapho ukucindezela kwehla kunani elishiwo, i-valve kufanele Ivale ngokuzenzakalelayo ngesikhathi ukuze ivikele ukusebenza okuphephile kwemishini, iziqukathi noma amapayipi.

7. I-steam trap: Amanzi athile ajiyile azokwakhiwa lapho kuthuthwa isitimu, umoya ocindezelwe kanye nokunye. Ukuze kuqinisekiswe ukusebenza kahle nokusebenza okuphephile kocingo, le midiya engenamsebenzi neyingozi kufanele ikhishwe kusenesikhathi ukuze kuqinisekiswe ukusetshenziswa nokuphepha kocingo. sebenzisa. Inemisebenzi elandelayo: 1. Iyakwazi ukususa ngokushesha amanzi ajiyile; 2. Vimbela ukuvuza kwesitimu; 3. Khipha umoya namanye amagesi angacondensable.

8. I-valve yokunciphisa ingcindezi: Kuyi-valve eyehlisa ingcindezi yokungena kungcindezi ethile edingekayo ngokulungisa, futhi incike emandleni omthombo ngokwawo ukuze kugcinwe ngokuzenzakalelayo ukucindezela kokuphuma okuzinzile.

9. Hlola i-valve: eyaziwa nangokuthi i-reverse flow valve, i-valve yokuhlola, i-valve yokucindezela emuva kanye ne-valve yendlela eyodwa. Lawa ma-valve avuleka futhi avalwe ngokuzenzakalelayo amandla akhiqizwa ukugeleza kwe-medium ngokwayo epayipini, okuwuhlobo lwe-automatic valve. I-valve yokuhlola isetshenziswa ohlelweni lwamapayipi, futhi umsebenzi wayo oyinhloko ukuvimbela ukugeleza okubuyela emuva kwe-medium, ukuzungezisa okubuyela emuva kwepompo kanye ne-motor motor, kanye nokuphuma kwe-container medium. Ama-valve okuhlola nawo asetshenziswa emigqeni ehlinzeka ngezinhlelo ezisizayo lapho ukucindezela kungase kukhuphuke ngaphezu kokucindezela kwesistimu. Ingahlukaniswa ikakhulukazi ngohlobo lokushwiba (elijikelezayo ngokuya maphakathi namandla adonsela phansi) kanye nohlobo lokuphakamisa (oluhambayo eksisi)