I-API 6D/API 608 Ukuphosa/Ukubumba i-Bw Floating/Trunnion Dbb Manual/Electrical/Pneumatic Cryogenic Eccentric Semi-Ball Valve
Yintoni ivalvu yebhola ye-DBB trunnion?
Ivalvu yebhola ye-DBB trunnionyivalvu yebhola eyenzelwe ngokukodwa.
Ngokuphathelele inkqubo ye-Double block kunye ne-bleed valve, kukho iinkcazo ezimbini ze-API6D kunye ne-OSHA.
I-OSHA ichazaIvalvu yebhola ye-DBB trunnionInkqubo "njengokuvalwa komgca, umbhobho, okanye umbhobho ngokuvala nokutshixa okanye ukufaka iithegi kwiivalvu ezimbini ezingaphakathi kunye nokuvula nokutshixa okanye ukufaka iithegi kwivalvu yokukhupha amanzi okanye yokungenisa umoya kumgca ophakathi kweevalvu ezimbini ezivaliweyo".
iIvalvu yebhola ye-NORTECH DBB trunnionyenzelweNgokudibanisa iivalvu ezimbini zibe ngumzimba omnye, uyilo lweevalvu ezimbini lunciphisa ubunzima kunye neendlela zokuvuza ezinokubakho ngelixa luhlangabezana neemfuno ze-OSHA zokuvimba kabini kunye nokuphuma kwegazi.
I-API 6D ichaza iNkqubo yevalvu yebhola ye-DBB trunnion njenge "valvu enye eneemiphezulu ezimbini zokuhlala, kwindawo evaliweyo, enika isitywino nxamnye noxinzelelo oluvela kumacala omabini evalvu ngendlela yokukhupha/ukukhupha igazi kumngxuma ophakathi kweendawo zokuhlala."
Iimpawu eziphambili zevalvu yebhola ye-DBB trunnion
Iyunithi enyeIvalvu yebhola ye-DBB trunnion Inika ibhloko ephindwe kabini kwaye ikhupha igazi kwivalvu enye. Olu hlobo lunokwahlula imibhobho kumacala omabini evalvu ukuze kuphume/kukhutshwe igazi kwivalvu ephakathi kwezihlalo.
Ukusebenzisa inkqubo ye-single unit double block kunye ne-bleed valve xa kuthelekiswa nee-valve ezintathu ezahlukeneyo kusindisa ixesha lokufaka, ubunzima kwinkqubo yepayipi, kunye nendawo. Olu yilo lukwaneenzuzo zokusebenza,
- Zimbalwa kakhulu iindlela ezinokuthi zivuza ngaphakathi kwecandelo eliphindwe kabini kunye neliphuma igazi lombhobho.
- Zonke izinto zevalvu zigcinwe kwiyunithi enye, indawo efunekayo yokufakela incitshiswa kakhulu ngaloo ndlela kuvulwa indawo yezinye izixhobo ezibalulekileyo.
- Kufuneka amaxesha amafutshane okukhupha amanzi.
Ivalvu yebhola ye-DBB trunnion ludibaniso lwe-block/isolation valve enye okanye ezingaphezulu, ngokuqhelekileyo ii-ball valves, kunye ne-bleed/vent valve enye okanye ezingaphezulu, ngokuqhelekileyo ii-ball okanye ii-needle valves. Injongo ye-block kunye ne-bleed valve system kukwahlula okanye ukuvimba ukuhamba kolwelo kwinkqubo ukuze ulwelo oluvela phezulu lungafikeleli kwezinye iindawo zenkqubo ezisezantsi. Oku kwenza iinjineli zikwazi ukuphuma okanye zikhuphe okanye zikhuphe ulwelo oluseleyo kwinkqubo kwicala elisezantsi ukuze zenze umsebenzi othile (ukugcinwa/ ukulungiswa/ ukutshintshwa), ukuthatha iisampulu, ukuphambuka kokuhamba kwamanzi, ukufakwa kweekhemikhali, ukujonga ukuthembeka kokuvuza njl.
Iinkcukacha zobugcisa zevalvu yebhola ye-DBB trunnion
Umboniso weMveliso: Ivalvu yebhola ye-DBB trunnion
Ukusetyenziswa kwevalvu yebhola ye-DBB trunnion
Iivalvu zebhola ze-DBB trunnionZisetyenziswa kakhulu kwishishini leoyile negesi, kodwa zinokuba luncedo nakwezinye iindawo ezininzi. Zisetyenziswa rhoqo apho kufuneka kuphume igazi kwivalvu, apho imibhobho ifuna ukwahlulwa ukuze ilungiswe, okanye nakweyiphi na kwezi meko zilandelayo:
- Thintela ungcoliseko lwemveliso.
- Susa izixhobo ezisetyenziswayo xa zicocwa okanye zilungiswa.
- Ukulinganiswa kwemitha.
- Hlukanisa izixhobo ezifana nezikhombisi zoxinzelelo kunye neegeyiji ze-lever.
- Inkqubo ephambili yomphunga.
- Zicime kwaye ukhuphe izixhobo zokulinganisa uxinzelelo.
