I-API 6D API608 I-Cast Steel Trunnion Mounted Ball Valve yoMvelisi waseTshayina
Yintoni ivalvu yebhola yentsimbi eqhotsiweyo?
A Ivalvu yebhola ye-trunnion yentsimbi ephosiweyokuthetha ukuba ibhola ithintelwe ziibheringi kwaye ivunyelwe ukujikeleza kuphela, uninzi lomthwalo we-hydraulic luxhaswa ziingxaki zeNkqubo, nto leyo ebangela uxinzelelo oluphantsi lweebheringi kwaye kungabikho kudinwa kwe-shaft.
Iingenelo zoyilo lwebhola ye-trunnion kukuba i-torque yokusebenza iphantsi, kulula ukuyisebenzisa, ukunxitywa kwesihlalo okuncinci (Ukwahlulwa kwe-Stem/ball kuthintela ukulayisha ecaleni kunye nokunxitywa kwezihlalo ezisezantsi komlambo kuphucula ukusebenza kunye nobomi benkonzo), ukusebenza okuphezulu kokutywina kuxinzelelo oluphezulu noluphantsi (indlela eyahlukileyo yentwasahlobo kunye noxinzelelo lomgca ongaphezulu komlambo isetyenziswa njengesitywino nxamnye nebhola emileyo yokusetyenziswa koxinzelelo oluphantsi kunye noxinzelelo oluphezulu).
Iimpawu eziphambili ze-NORTECH Cast steel trunnion ball valve
1. Ukuvimba kabini kunye nokopha (DBB)
Xa ivalvu ivaliwe kwaye umngxuma ophakathi ukhutshiwe ngevalvu yokukhupha amanzi, izihlalo eziphezulu nezisezantsi ziya kuvala ngokuzimeleyo. Omnye umsebenzi wesixhobo sokukhupha amanzi kukuba isihlalo sevalvu sinokujongwa ukuba kukho ukuvuza ngexesha lovavanyo. Ukongeza, iidipozithi ngaphakathi emzimbeni zinokuhlanjwa ngesixhobo sokukhupha amanzi. Isixhobo sokukhupha amanzi senzelwe ukunciphisa umonakalo kwisihlalo ngenxa yokungcola okukwindawo yokusebenzela.
3. Isixhobo sokutywina esingxamisekileyo
Iivalvu zebhola ezinobubanzi obungaphezulu okanye obulingana ne-6' (DN150) zonke zenziwe ngesixhobo sokujova i-sealant kwisiqu nakwisihlalo. Xa iringi yesihlalo okanye iringi yesiqu O yonakele ngenxa yengozi, isitywini esifanelekileyo sinokufakwa kwisixhobo sokujova i-sealant ukuze kuthintelwe ukuvuza okuphakathi kwiringi yesihlalo nakwisiqu. Ukuba kuyimfuneko, inkqubo yokutywina encedisayo ingasetyenziselwa ukuhlamba nokuthambisa isihlalo ukuze kugcinwe ucoceko lwaso.
Isixhobo Sokufaka Inaliti Esitywinayo
4. Uyilo lweSakhiwo esingatshiyo
Xa kutsha ngexesha lokusetyenziswa kwevalvu, iringi yesihlalo, iringi yesiqu se-O kunye neringi ye-O ephakathi eyenziwe nge-PTFE, irabha yezinye izinto ezingezizo ezesinyithi iya kubola okanye yonakale phantsi kobushushu obuphezulu. Phantsi koxinzelelo lwe-medium, ivalvu yebhola iya kutyhala i-seat retainer ngokukhawuleza iye ebholeni ukuze yenze iringi yentsimbi iqhagamshelane nebhola kwaye yenze isakhiwo sokuncedisa isinyithi ukuya kwisinyithi, esinokulawula ngokufanelekileyo ukuvuza kwevalvu. Uyilo lwesakhiwo esingatshiyo sevalvu yepipeline ye-trunnion luhambelana neemfuno ezikwi-API 607, API 6FA, BS 6755 kunye neminye imigangatho.
6.Isakhiwo sokutywina isihlalo esithembekileyo
Ukutywinwa kwesihlalo kwenziwa ngokusebenzisa izigcini zesihlalo ezimbini ezidadayo, Zinokudada nge-axial ukuvimba ulwelo, kubandakanya ukutywinwa kwebhola kunye nokutywinwa komzimba. Ukutywinwa kwesihlalo sevalvu ngoxinzelelo oluphantsi kwenziwa ngokuqiniswa kwentwasahlobo. Ukongeza, isiphumo sepiston sesihlalo sevalvu senziwe ngokufanelekileyo, nto leyo eqinisekisa ukutywinwa koxinzelelo oluphezulu ngoxinzelelo lwendlela ngokwayo. Ezi ntlobo zimbini zilandelayo zokutywinwa kwebhola zinokufezekiswa.
7. Ukutywina okukodwa
(Ukuncitshiswa Koxinzelelo Oluzenzekelayo Kwindawo Ephakathi Yevalvu) Ngokubanzi, kusetyenziswa isakhiwo esinye sokutywina. Oko kukuthi, kukho ukutywinwa okuphezulu kuphela. Njengoko kusetyenziswa izitulo zokutywina ezizimeleyo ezithwele intwasahlobo ephezulu kunye nesezantsi, umgodi wevalvu oxinezelekileyo ngaphakathi unokoyisa isiphumo sokuqinisa kwangaphambili sentwasahlobo, ukuze isihlalo sikhululwe ebholeni kwaye sifumane ukukhululeka koxinzelelo oluzenzekelayo ukuya kwindawo esezantsi. Icala elingaphezulu: Xa isihlalo sihamba nge-axial ecaleni kwevalvu, uxinzelelo "P" olusebenza kwinxalenye ephezulu (i-inlet) luvelisa amandla angasemva kwi-A1, Njengoko i-A2 iphezulu kune-A1, i-A2-A1=B1, amandla kwi-B1 aya kutyhala isihlalo siye ebholeni kwaye aqinisekise ukuvalwa okuqinileyo kwenxalenye ephezulu.
Icala elisezantsi: Nje ukuba uxinzelelo "Pb" ngaphakathi kwevalvu Cavity lunyuke, amandla asetyenziswa kwi-A3 aphezulu kunalawo akwi-A4. Njengoko i-A3-A4=B2, umahluko woxinzelelo kwi-B2 uya koyisa amandla entwasahlobo ukuze isihlalo sikhululwe ebholeni kwaye siphumeze uxinzelelo lwe-valve cavity ukuya kwindawo esezantsi emva koko, isihlalo kunye nebhola ziya kuvalwa kwakhona phantsi kwentshukumo yentwasahlobo.
8. Ukutywina kabini (i-piston kabini)
Ivalvu yebhola yombhobho we-trunnion ingayilwa ngesakhiwo sokutywina kabini ngaphambi nasemva kwebhola kwiimeko ezithile zenkonzo ekhethekileyo kunye neemfuno zomsebenzisi. Inesiphumo sepiston kabini. Kwimeko eqhelekileyo, ivalvu ngokubanzi isebenzisa ukutywina okuphambili. Xa isihlalo esiphambili sitywina sonakele kwaye sibangela ukuvuza, isihlalo sesibini sinokudlala umsebenzi wokutywina kwaye siphucule ukuthembeka kokutywina. Isihlalo sisebenzisa isakhiwo esidibeneyo. Itywina eliphambili litywina lesinyithi ukuya kwisinyithi. Itywina lesibini yiringi yerabha ye-fluorine O enokuqinisekisa ukuba ivalvu yebhola inokufikelela kwinqanaba lokutywina le-bubble. Xa umahluko woxinzelelo uphantsi kakhulu, isihlalo sokutywina siya kucinezela ibhola ngentshukumo yasentwasahlobo ukuze kufezekiswe ukutywina okuphambili. Xa umahluko woxinzelelo uphakama, amandla okutywina esihlalo kunye nomzimba aya kwanda ngokufanelekileyo ukuze kutywinwe isihlalo kunye nebhola ngokuqinileyo kwaye kuqinisekiswe ukusebenza kakuhle kokutywina.
Ukuvalwa okuphambili: Phezulu.
Xa umahluko woxinzelelo uphantsi okanye kungekho umahluko woxinzelelo, isihlalo esidadayo siya kuhamba nge-axial ecaleni kwevalvu phantsi kwentshukumo yentwasahlobo size sityhale isihlalo siye ebholeni ukuze sigcine ukutywinwa okuqinileyo. Xa isihlalo sevalvu siphezulu kunamandla asetyenziswa kwindawo A1,A2-A1=B1. Ke ngoko, amandla aku-B1 aya kutyhala isihlalo siye eBholeni aze enze ukutywinwa okuqinileyo kwenxalenye ephezulu.
9. Isixhobo soKhuseleko
Njengoko ivalvu yebhola yenzelwe ukutywinwa okuphambili kunye nokwesibini okunesiphumo sepiston ephindwe kabini, kwaye umngxuma ophakathi awukwazi ukwenza ukukhululeka koxinzelelo oluzenzekelayo, ivalvu yokunceda ukhuseleko kufuneka ifakwe emzimbeni ukuze kuthintelwe ingozi yomonakalo ongaphezulu koxinzelelo ngaphakathi komngxuma wevalvu onokwenzeka ngenxa yokwanda kobushushu be-medium. Uqhagamshelo lwevalvu yokunceda ukhuseleko ngokubanzi yi-NPT 1/2. Enye ingongoma ekufuneka iqatshelwe kukuba umngxuma wevalvu yokunceda ukhuseleko ukhutshelwa ngqo emoyeni. Kwimeko apho ukukhupha ngqo emoyeni akuvumelekanga, sicebisa ukuba ivalvu yebhola enesakhiwo esikhethekileyo sokukhulula uxinzelelo oluzenzekelayo ukuya kumsinga ophezulu kufuneka isetyenziswe. Jonga oku kulandelayo ukuze ufumane iinkcukacha. Nceda uyibonise ngokulandelelana ukuba awuyidingi ivalvu yokunceda ukhuseleko okanye ukuba ungathanda ukusebenzisa ivalvu yebhola enesakhiwo esikhethekileyo sokukhulula uxinzelelo oluzenzekelayo ukuya kumsinga ophezulu.
Umzobo oyintloko wevalvu yebhola yokutywina phezulu nasezantsi
Umzobo osisiseko wokunciphisa uxinzelelo lwevalvu yebhola ukuya kumjelo ongasentla kunye nokutywinwa komjelo osezantsi
12. Ukumelana nokugqwala kunye nokumelana noxinzelelo lwe-sulfide
Kushiyelwe isibonelelo esithile sokugqwala ubukhulu bodonga lomzimba.
Isiqu sentsimbi yekhabhoni, umngxuma osisigxina, ibhola, isihlalo kunye neringi yesihlalo zifakwa kwi-nickel plating yamakhemikhali ngokwe-ASTM B733 kunye ne-B656. Ukongeza, izixhobo ezahlukeneyo ezichasene nokugqwala ziyafumaneka ukuze abasebenzisi bazikhethe. Ngokweemfuno zabathengi, izixhobo zevalvu zinokukhethwa ngokwe-NACE MR 0175 / ISO 15156 okanye i-NACE MR 0103, kwaye ulawulo oluqinileyo lomgangatho kunye nokuhlolwa komgangatho kufuneka kwenziwe ngexesha lokwenziwa ukuze kuhlangatyezwane ngokupheleleyo neemfuno kwimigangatho kwaye kuhlangatyezwane neemeko zenkonzo kwindawo yesulfurization.
11. Isiqu soBungqina bokuqhushumba
Isiqu samkela isakhiwo esingavumeli ukutsha. Isiqu senziwe ngonyawo olusezantsi ukuze xa sibekwe isiciko sangaphezulu kunye nesikrufu, isiqu singavuthelwa yi-medium nokuba kukho ukunyuka okungaqhelekanga koxinzelelo kwivalvu.
Isiqu Esingqina Ukuqhushumba
13. Isiqu solwandiso
Ngokuphathelele ivalvu efakwe ngaphakathi, isiqu solwandiso sinokubonelelwa ukuba kufuneka kusetyenziswe umhlaba. Isiqu solwandiso senziwe ngesiqu, ivalvu yokutshiza i-sealant, kunye nevalvu yokukhupha amanzi enokwandiswa iye phezulu ukuze kube lula ukuyisebenzisa. Abasebenzisi kufuneka babonise iimfuno kunye nobude besiqu solwandiso xa bebeka ii-odolo. Kwivalvu yebhola eqhutywa nge-electric, pneumatic kunye ne-pneumatic - hydraulic actuators, ubude besiqu solwandiso kufuneka bube ukusuka embindini wepayipi ukuya kwi-flange ephezulu.
Umzobo wesicwangciso sesiqu solwandiso
Iinkcukacha zevalvu yebhola ye-trunnion yentsimbi ye-NORTECH Cast
Ivalvu yebhola ye-trunnion yentsimbi ephosiweyo Iinkcukacha zobugcisa
| Ububanzi obuqhelekileyo | 2”-56”(DN50-DN1400) |
| Uhlobo loQhagamshelo | I-RF/BW/RTJ |
| Umgangatho woyilo | Ivalvu yebhola ye-API 6D/ASME B16.34/API608/MSS SP-72 |
| Izinto zomzimba | Intsimbi ephosiweyo/Intsimbi ephosiweyo/Intsimbi engatyiwayo/Intsimbi engatyiwayo ephosiweyo |
| Izinto zebhola | A105+ENP/F304/F316/F304L/F316L |
| Izinto zesihlalo | I-PTFE/PPL/INLON/I-PEEK |
| Ubushushu bokusebenza | Ukuya kuthi ga kwi-120°C kwi-PTFE |
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| Ukuya kuthi ga kwi-250°C kwi-PPL/PEEK |
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| Ukuya kuthi ga kwi-80°C kwi-NYLON |
| Isiphelo seFlange | I-ASME B16.5 RF/RTJ |
| Isiphelo se-BW | I-ASME B 16.25 |
| Ubuso ngobuso | I-ASME B 16.10 |
| Ubushushu boxinzelelo | I-ASME B 16.34 |
| Ikhuselekile emlilweni kwaye ayitshintshi mandla | I-API 607/API 6FA |
| Umgangatho wokuhlola | I-API598/EN12266/ISO5208 |
| Ubungqina bokuvela | I-ATEX |
| Uhlobo lomsebenzi | Ibhokisi yegiya yesandla/i-actuator ye-pneumatic/i-actuator yombane |
• Iphedi yokuqhoboshela ye-ISO 5211 ehambelana neentlobo ezahlukeneyo zee-actuators;
• isakhiwo esilula, ukutywinwa okuthembekileyo kunye nokugcinwa okulula.
• uyilo oluchasene nokungashukumi kunye nolukhuselekileyo emlilweni.
• Isiqinisekiso se-ATEX sokukhusela ukuqhuma.
Umboniso weMveliso:
Ukusetyenziswa kwevalvu yebhola ye-trunnion yentsimbi ye-NORTECH Cast
Olu hloboIvalvu yebhola ye-trunnion yentsimbi ephosiweyoIsetyenziswa kakhulu kwinkqubo yokusebenzisa, ukucokisa kunye nokuthutha ioyile, igesi kunye nezimbiwa. Ingasetyenziselwa ukuvelisa iimveliso zeekhemikhali, amayeza; inkqubo yemveliso yombane wamanzi, amandla obushushu kunye namandla enyukliya; inkqubo yokukhupha amanzi,
