I-Trunnion Ball Valve yentsimbi eyenziwe -FLANGE

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I-FAGED TRUNNION BALL VALVE

Ivalve yebhola ye-trunnion isetyenziselwa ukusika okanye ukudibanisa amajelo eendaba ezahlukeneyo zeClass150 ~ Class2500. Iivalvu ezenziwe ngezinto ezahlukeneyo zilungele iindaba ezahlukeneyo ezifana namanzi, umphunga, ioyile, igesi elungileyo, igesi yendalo, igesi yamalahle, i-nitric acid, i-oxidizer, i-urea njl. Iindlela zokuqhuba ziquka ukusebenza ngesandla kunye nokusebenza ngombane. Iziphelo zonxibelelwano zinokuba yi-flange okanye i-butt welding.

Iimpawu Zokwakha

1. Ibhloko ephindwe kabini kunye neBleed ((DBB)
Xa i-valve ivaliwe kwaye umgodi ophakathi uvulwe ngevalve yokukhupha, izihlalo eziphezulu nezezantsi ziya kuzimela ukuvala ulwelo ekungeneni nasekuphumeni ukuze zifezekise umsebenzi webhloko ephindwe kabini. Enye imisebenzi yesixhobo sokukhupha kukuba isihlalo se-valve sinokuhlolwa ukuba kukho ukuvuza ngexesha lovavanyo. Ukongeza, iidipozithi ezingaphakathi komzimba zingahlambwa zize zikhutshwe ngesixhobo sokukhutshwa ukunciphisa umonakalo kwisihlalo ngenxa yokungcola kwindawo ephakathi.

2. I-torque yokusebenza ephantsi
I-valve yebhola yombhobho we-trunnion yamkela isakhiwo sebhola ye-trunnion kunye nesihlalo se-valve edadayo, ukuze kufikelelwe i-torque ephantsi phantsi koxinzelelo lokusebenza. Isebenzisa i-PTFE ezizithambisa kunye ne-sliding bearing ukunciphisa i-coefficient yokungqubana ukuya kweyona iphantsi ngokudibanisa namandla aphezulu kunye ne-high fineness stem.
3. Isixhobo sokuvala ngokungxamisekileyo
Iivalvu zebhola ezinobubanzi obungaphezulu okanye obulingana ne-6 "(DN150) zonke zenzelwe ngesixhobo sokufaka i-sealant kwisiqu kunye nesihlalo. Xa i-ring yesihlalo okanye i-O ring yesithambo yonakele ngenxa yengozi, i-sealant ehambelanayo inokufakwa ngesixhobo sokufaka i-sealant ukuphepha ukuvuza okuphakathi kwi-ring yesihlalo kunye ne-stem. Ukuba kuyimfuneko, inkqubo yokuvala yokunceda ingasetyenziselwa ukuhlamba nokuthambisa isihlalo ukugcina ubucoco bayo.

4. Uyilo lwesakhiwo esingenamlilo
Kwimeko yomlilo ngexesha lokusetyenziswa kwevalve, i-ring yesihlalo, i-ring ye-O ye-stem kunye ne-ring ye-O ye-flange ephakathi eyenziwe nge-PTFE, irabha okanye ezinye izinto ezingezona zentsimbi ziya kuwonakala okanye zonakaliswe phantsi kobushushu obuphezulu. Phantsi koxinzelelo lomphakathi i-valve yebhola iya kucindezela isihlalo sokugcina ngokukhawuleza kwibhola ukwenza i-ring yokutywina yentsimbi iqhagamshelane nebhola kwaye yenze isakhiwo sokutywina kwensimbi esincedayo, esinokulawula ngokufanelekileyo ukuvuza kwevalve. Uyilo lwesakhiwo esingenamlilo se-trunnion pipeline ball valve luhambelana neemfuno ze-API 607, i-API 6FA, i-BS 7655 kunye neminye imigangatho.

5. Isakhiwo sokulwa ne-static
Ivalve yebhola inikwe isakhiwo sokulwa ne-static kwaye yamkela isixhobo sokukhupha umbane ozinzileyo ukuze yenze ngokuthe ngqo isijelo esizinzileyo phakathi kwebhola nomzimba okanye yenze isijelo esizinzileyo phakathi kwebhola nomzimba ngokusebenzisa isiqu, ukuze ikhuphe umbane ozinzileyo oveliswe ku-dut ukuze ugqubana ngexesha lokuvula nokuvala ibhola nesihlalo ngokusebenzisa umbhobho, ukuphepha umlilo okanye ukuqhuma okunokuba
6. Isakhiwo sokuvala isihlalo esithembekileyo
Ukuvalwa kwesihlalo kwenziwa ngezixhobo ezimbini zokugcina izihlalo eziphakamileyo. Zinokudabuka ngokwe-axial ukuvimba ulwelo, kuquka ukuvalwa kwebhola nokuvalwa komzimba. Ukuvalwa koxinzelelo oluphantsi lwesihlalo se-valve kwenziwa ngokuqina kwangaphambili kwentsimbi. Ukongeza, isiphumo se-piston sesihlalo se-valve sicelwe ngokufanelekileyo, esifezekisa ukuvalwa koxinzelelo oluphezulu ngoxinzelelo lwe-medium ngokwayo. Iintlobo ezimbini ezilandelayo zokuvala ibhola zinokufezekiswa.
7. Single Sealing (ngokuzenzekelayo uxinzelelo Relief In Middle Cavity Of Valve)
Ngokuqhelekileyo, isakhiwo sokuvala esinye sisetyenziswa, oko kukuthi, kukho kuphela ukuvalwa okuphezulu. Njengoko isetyenziswa izihlalo zokuvala ezizimeleyo ezihlayishwe ngaphezulu kunye nezaphantsi kwentsimbi, uxinzelelo olugqithisileyo ngaphakathi komgodi wevalve lunokuqoba isiphumo sokuqinisa kwangaphambili kwentsimbi, ukuze kwenziwe ukukhululwa kwesihlalo kwibhola kwaye uqonde ukukhululwa koxinzelelo okuzenzekelayo kwinxalenye esezant

Icala elingaphezulu: Xa isihlalo sihamba nge-axial ngevalve, uxinzelelo P olwenziwe kwicandelo elingaphezulu ((ukungena) luvelisa amandla okubuyela emuva kwi-A1. Njengoko i-A2 iphezulu kune-A1, i-A2-A1=B1, amandla kwi-B1 aya kucindezela isihlalo kwibhola kwaye aqonde ukuvalwa okuqinileyo kwenxalenye engaphezulu.

Icala elingezantsi: Xa uxinzelelo Pb ngaphakathi komgodi wevalve lukhule, amandla asebenziswa kwi-A3 aphezulu kunalo kwi-A4. Njengoko i-A3-A4=B2, umahluko woxinzelelo kwi-B2 uya kunqoba amandla entwasahlobo ukwenza isihlalo sikhululwe kwibhola kwaye siqonde ukunciphiswa koxinzelelo lomgodi wevalve kwinxalenye esezantsi. Emva koko, isihlalo nebhola ziya kuvalwa kwakhona kwintsimbi.

8. Ukuvalwa okuphindwe kabini (iPiston ephindwe kabini)
I-valve yebhola yombhobho we-trunnion inokuyilwa ngesakhiwo sokuvala kabini ngaphambi nangemva kwebhola kwiimeko ezithile zenkonzo ekhethekileyo kunye neemfuno zomsebenzisi. Inempembelelo yepiston ephindwe kabini. Phantsi kwemeko eqhelekileyo, ivalvu ngokuqhelekileyo isebenzisa ukuvalwa okuphambili. Xa ukuvalwa kwesihlalo esiphambili kongakale kwaye kubangela ukuvuza. Isihlalo sesibini sinokudlala umsebenzi wokuvala kwaye siphucule ukuthembeka kokuvala.

Isihlalo samkela isakhiwo esihlanganisiweyo. Isitywino esiphambili sisinyithi ukuya kwinsimbi. Isityenziso sesibini yi-fluorine rubber O ring enokuqinisekisa ukuba i-valve yebhola ifikelela kwinqanaba le-bubble sealinge. Xa umahluko woxinzelelo uphantsi kakhulu, isihlalo sokuvala siya kucindezela ibhola ngokusebenzisa isenzo sentlobo ukuze kufumane ukuvalwa okuphambili. Xa umahluko woxinzelelo unyuka, amandla okuvala esihlalo nomzimba aya kwanda ngokufanelekileyo ukuze kuvalwe ngokuqinileyo isihlalo nebhola kwaye kuqinisekiswe ukusebenza okulungileyo kokuvala.
Ukuvalwa okuphambili: Upstream. Xa umahluko woxinzelelo uphantsi okanye akukho umahluko woxinzelelo, isihlalo esiphakamileyo siza kuhamba ngokwe-axial ngevalve phantsi kwesenzo sentsimbi kwaye siqhagamshele isihlalo esiya kwibhola ukugcina ukuvalwa okuqinileyo. Xa uxinzelelo lombhobho P lunyuka, amandla asebenziswa kwindawo A2 yesihlalo se-valve aphezulu kunamandla asebenziswa kwindawo A1, A2-A1=B1. Ngoko ke, amandla kwi-B1 aya kucindezela isihlalo esiya kwibhola kwaye sifumane ukuvalwa okuqinileyo kwenxalenye engaphezulu.

Ukuvalwa kwesibini: Ngezantsi. Xa umahluko woxinzelelo uphantsi okanye akukho umahluko woxinzelelo, isihlalo esiphakamileyo siza kuhamba ngokwe-axial ngevalve phantsi kwesenzo sentsimbi kwaye siqhagamshele isihlalo esiya kwibhola ukugcina ukuvalwa okuqinileyo. Xa uxinzelelo lwe-valve cavity P lunyuka, amandla asebenziswa kwindawo ye-A4 yesihlalo se-valve aphezulu kunamandla asebenziswa kwindawo ye-A3, A4-A3=B1. Ngoko ke, amandla kwi-B1 aya kucindezela isihlalo esiya kwibhola kwaye sifumane ukuvalwa okuqinileyo kwenxalenye engaphezulu.

9. Isixhobo Sokunceda Ukhuseleko
Njengoko i-valve yebhola yenzelwe ukutyiwa okuphambili nokwesibini okunesiphumo se-piston ephindwe kabini, kwaye umgodi ophakathi awukwazi ukuqonda ukhululwa koxinzelelo oluzenzekelayo, i-valve yokunceda ukhuseleko kufuneka ifakwe emzimbeni ukuze kuthintelwe ingozi yomonakalo woxinzelelo olugqithisileyo ngaphakathi komgodi we-valve onokwenzeka ngenxa yokwanda kobush Ukunxibelelana kwevalve yokunceda ukhuseleko ngokuqhelekileyo yi-NPT1/2. Enye into ekufuneka iphawulwe kukuba i-medium yevalve yokunceda ukhuseleko ikhutshwa ngqo emoyeni. Kwimeko yokuba ukukhutshwa ngqo emoyeni akuvumelekanga, sicebisa ukuba isetyenziswe ivalvu yebhola enesakhiwo esikhethekileyo sokunciphisa uxinzelelo ngokuzenzekelayo kumlambo ophezulu. Jonga okulandelayo ukuze ufumane iinkcukacha. Nceda uyibonise ngokulandelelana ukuba awufuni ivalvu yokuncedisa ukhuseleko okanye ukuba ungathanda ukusebenzisa ivalvu yebhola enesakhiwo esikhethekileyo sokuncedisa uxinzelelo ngokuzenzekelayo kumlambo ophezulu.

10. Isakhiwo seSecial sokunciphisa uxinzelelo oluzenzekelayo ukuya kumjelo ophezulu
Njengoko i-valve yebhola yenzelwe ukutyiwa okuphambili nokwesibini okunesiphumo se-piston ephindwe kabini, kwaye umgodi ophakathi awukwazi ukuqonda ukuncitshiswa koxinzelelo okuzenzekelayo, i-valve yebhola enesakhiwo esikhethekileyo incetyiswa ukuhlangabezana nemfuno yokunciphiswa koxinzelelo okuzenzekelayo kwaye uqinisekise uku Kwisakhiwo, umlambo ophezulu wamkela ukuvalwa okuphambili kwaye umlambo ophezulu wamkela ukuvalwa okuphambili nokwesibini. Xa i-valve yebhola ivaliwe, uxinzelelo kwi-valve cavity lunokuqonda uxinzelelo oluzenzekelayo lokunciphisa kumlambo ophezulu, ukuze kuphephwe ingozi ebangelwe uxinzelelo lomgodi. Xa isihlalo esiphambili sonakale kwaye sivuza, isihlalo sesibini sinokudlala umsebenzi wokuvala. Kodwa kuya kunikwa ingqalelo ekhethekileyo kwicala lokuhamba kwevalve yebhola. Ngexesha lokufakwa, qaphela iindlela eziphezulu nezezantsi. Jonga imizobo elandelayo yokuvala umgaqo wevalve yesakhiwo esikhethekileyo.

11. I-Blow-out Proof Stem
Isitye sikhetha isakhiwo sobungqina bokuphuma. Isithango senzelwe ngenyathelo esezantsi kwaso ukuze ngendawo yokugquma kwesiphelo esiphezulu kunye nesikringu, isithango asiyi kuphefumlwa yi-medium nokuba kukho uxinzelelo olungaqhelekanga kumgodi wevalve.

12. Ukumelana nokugqwala kunye nokumelana noxinzelelo lwe-sulfide
I-allowance ethile yokugqwala ishiyelwe ngobunyani budonga bomzimba. I-carbon steel stem, i-shaft esisigxina, ibhola, isihlalo kunye ne-ring yesihlalo zixhomekeke kwi-nickel plating yemikhemikhali ngokwe-ASTM B733 kunye ne-B656. Ukongeza, izinto ezahlukeneyo ezimelana nokugqwala ziyafumaneka ukuze abasebenzisi bakhethe.
Ngokutsho kweemfuno zabathengi, izinto zevalve zinokhethwa ngokwe-NACE MR 0175/ISO 15156 okanye i-NACE MR 0103, kwaye ulawulo lomgangatho olungqongqo kunye nohlolo lomgangatho kufuneka lwenziwe ngexesha lokuvelisa ukuze kuhlangabezane ngokupheleleyo neemfuno kwimigangatho kunye nokuhlangabezane neemeko zenkonzo kwindawo yok
13. I-Extension Stem
Ngokuphathelele iivalve ezifakiweyo, isitya sokwandisa sinokubonelelwa ukuba ukusebenza komhlaba kuyimfuneko. Isithango sokwandisa senziwe ngesithango, i-valve yokufaka i-sealant, kunye ne-valve yokukhupha amazi enokwandiswa phezulu ukuze kusebenze lula. Abasebenzisi kufuneka babonise iimfuno ze-extension stem kunye nobude xa babeka iiodolo.
Kwiivalvu zebhola eziqhutywa ngemisebenzi yombane, ye-pneumatic kunye ne-pneumatic hydraulic, ubude be-stem yokwandisa kufuneka bube kumbindi wombhobho ukuya kwi-flange ephezulu.