Chidziwitso cha ma valve a Globe

Ma valve a Globe

Ma valve a Globe ndi valavu yoyenda ndipo amapangidwa kuti ayime, kuyamba ndi kuwongolera kuyenda. Disiki ya valve ya Globe imatha kuchotsedwa kwathunthu panjira kapena imatha kutseka njira yolowera.

Ma valve ochiritsira a Globe atha kugwiritsidwa ntchito kudzipatula komanso kuchita zinthu zolimbitsa thupi. Ngakhale ma valvewa amawonetsa madontho otsika kwambiri kuposa owongoka = kudzera mu ma valve (mwachitsanzo, chipata, pulagi, mpira, ndi zina zotero), angagwiritsidwe ntchito pamene kuthamanga kutsika kupyolera mu valve si chinthu chowongolera.

Chifukwa chakuti kupanikizika kwa dongosolo lonse la diski kumasamutsidwa ku tsinde la valve, malire a kukula kwa ma valve awa ndi NPS 12 (DN 300). Mavavu a Globe akulu kuposa NPS 12 (DN 300) ndiosiyana ndi lamulo. Ma valve akuluakulu amafunikira kuti pakhale mphamvu zazikulu pa tsinde kuti atsegule kapena kutseka valavuyo popanikizika. Ma valve a Globe kukula kwake mpaka NPS 48 (DN 1200) apangidwa ndikugwiritsidwa ntchito.

Ma valve a Globe amagwiritsidwa ntchito kwambiri kuwongolera kuyenda. Kusiyanasiyana kwa kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kabwino ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwekazi ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kamwemwemwemwemwemwemwebayimwedhadha ngu ngu ngu ngu ngunganiwiraN Mavavu ogwiritsidwa ntchito mosiyanasiyana kutengera kuthamanga kwamphamvu amafunikira ma valve opangidwa mwapadera.

Kawirikawiri kupanikizika kwakukulu kwapadera pa diski ya valve sikuyenera kupitirira 20 peresenti ya kuthamanga kwapamwamba kwamtunda kapena 200 psi (1380 kPa), iliyonse yomwe ili yochepa. Mavavu okhala ndi chotchinga chapadera amatha kupangidwa kuti azigwiritsidwa ntchito mopitilira malire awa.

Chitsulo chachitsulo chapadziko lonse lapansi chamakampani amafuta ndi gasi

Mapangidwe a thupi la ma valve a Globe

Pali mapangidwe atatu ofunikira a mavavu a Globe, omwe ndi: Tee Pattern kapena Z-body, Angle Pattern ndi Wye Pattern kapena Y-body body.

Mapangidwe a valve ya Tee Pattern Globendi thupi lodziwika kwambiri, lomwe lili ndi diaphragm yooneka ngati Z. Kuyika kopingasa kwa mpando kumapangitsa kuti tsinde ndi litambala ziziyenda molunjika ku mzere wopingasa. Mapangidwe awa ali ndi coefficient yotsika kwambiri komanso kuthamanga kwapamwamba. Amagwiritsidwa ntchito pamayendedwe othamanga kwambiri, monga mizere yodutsa mozungulira valve yowongolera. Ma valve opangidwa ndi tee-pattern Globe angagwiritsidwenso ntchito m'malo omwe kutsika kwamphamvu sikudetsa nkhawa komanso kugunda kumafunika.

 

 

Mavavu a Angle Pattern Globendikusintha kwa valve yoyambira ya Tee Pattern Globe. Malekezero a valavu iyi ya Globe ali pamtunda wa madigiri 90, ndipo kutuluka kwamadzimadzi kumachitika ndi kutembenuka kumodzi kwa madigiri 90. Amakhala ndi ma coefficient otsika pang'ono kuposa ma valve a Wye-pattern Globe. Amagwiritsidwa ntchito m'mapulogalamu omwe amakhala ndi nthawi yothamanga chifukwa cha kuthekera kwawo kuthana ndi vuto la mayendedwe amtunduwu.

 

 

Mavavu a Wye Pattern Globe, ndi njira ina yochepetsera kuthamanga kwambiri, komwe kumakhala mu ma valve a Globe. Mpando ndi tsinde zimapindika pafupifupi madigiri 45, zomwe zimapereka njira yowongoka pakutsegula kwathunthu ndikupereka kukana kocheperako kuyenda. Zitha kusweka kwa nthawi yayitali popanda kukokoloka kwakukulu. Amagwiritsidwa ntchito kwambiri pochita masewera olimbitsa thupi panthawi yachilimwe kapena poyambira. Zitha kupangidwa kuti zichotse zinyalala zikagwiritsidwa ntchito mu mizere yotsekera yomwe nthawi zambiri imatsekedwa.

Disk ndi Mpando ndi Stem of Globe valves

Disiki:Ma diski odziwika kwambiri a mavavu a Globe ndi awa: disiki ya mpira, disk composite ndi plug disk. Mapangidwe a disk disk amagwiritsidwa ntchito makamaka pamakina otsika komanso kutentha kwapansi. Imatha kugwedezeka, koma kwenikweni imagwiritsidwa ntchito kuyimitsa ndikuyamba kuyenda.

Mapangidwe a disk opangidwa amagwiritsira ntchito mphete yolimba, yopanda zitsulo pa disk, yomwe imatsimikizira kutsekedwa kolimba.

Mapangidwe a plug disk amapereka bwino kugunda kuposa mpira kapena mapangidwe ake. Amapezeka m'mapangidwe osiyanasiyana ndipo onse ndi aatali komanso opendekera.

Mpando:Mipando ya valve ya Globe imaphatikizidwa kapena kulowetsedwa ku thupi la valve. Ma valve ambiri a Globe ali ndi mipando yakumbuyo mkati mwa Bonnet. Mipando yakumbuyo imapereka chisindikizo pakati pa tsinde ndi Bonnet ndipo imalepheretsa kukakamiza kwa dongosolo kuti lisamangidwe motsutsana ndi ma valve pakking, valavu ikatsegulidwa kwathunthu. Mipando yakumbuyo nthawi zambiri imagwiritsidwa ntchito mu ma valve a Globe.

Tsinde:Mavavu a Globe amagwiritsa ntchito njira ziwiri zolumikizira diski ndi tsinde: T-slot ndi kapangidwe ka disk nut. M'mapangidwe a T-slot, diski imatsetsereka pa tsinde, pomwe pakupanga nati ya disk, diski imakulungidwa mu tsinde.

Kupanga valve ya Globe

Mavavu a globe nthawi zambiri amakhala ndi tsinde zokwera, ndipo zazikuluzikulu zimakhala zomanga zakunja ndi goli. Zigawo za Globe valve ndizofanana ndi za valve pachipata. Vavu yamtunduwu imakhala ndi mipando mu ndege yofananira kapena yotsatiridwa pamzere woyenda.

Kukonza mavavu a Globe ndikosavuta, chifukwa ma discs ndi mipando zimakonzedwanso kapena kusinthidwa. Izi zimapangitsa kuti ma valve a Globe akhale oyenera ntchito zomwe zimafunikira kukonza ma valve pafupipafupi. Kumene ma valve amagwiritsidwa ntchito pamanja, maulendo afupikitsa a disk amapereka ubwino pakupulumutsa nthawi yogwiritsira ntchito, makamaka ngati ma valve amasinthidwa kawirikawiri.

Kusiyana kwakukulu pamapangidwe a Globe-valve ndi mitundu ya ma disc omwe amagwiritsidwa ntchito. Ma disks amtundu wa pulagi amakhala ndi kasinthidwe kotalika, kopindika kokhala ndi malo otambalala. Mtundu uwu wa mpando amapereka pazipita kukana ndi erosive kanthu a madzimadzi mtsinje. Mu chimbale chophatikizika, chimbalecho chimakhala ndi nkhope yathyathyathya yomwe imapanikizidwa motsutsana ndi mpando wotseguka ngati kapu. Mpando woterewu siwoyenera kutengera kuthamanga kwamphamvu kosiyanasiyana.

M'mavavu achitsulo a Globe, ma disc ndi mphete zapampando nthawi zambiri zimapangidwa ndi bronze. M'mavavu achitsulo-Globe kutentha mpaka 750 ° F (399 ° C), chopendekeracho nthawi zambiri chimapangidwa ndi chitsulo chosapanga dzimbiri motero chimathandizira kukana kugwidwa ndi kuphulika. Nkhope zokwerera nthawi zambiri zimatenthedwa kuti zipeze kuuma kosiyana. Zida zina zochepetsera, kuphatikiza ma aloyi opangidwa ndi cobalt, amagwiritsidwanso ntchito.

Malo okhala ndi pansi kuti awonetsetse kuti valavu yatsekedwa. Kwa makalasi otsika kwambiri, kuyanjanitsa kumasungidwa ndi locknut lalitali la disc. Pazovuta zambiri, ma disc amawongolera amaponyedwa m'thupi la valve. Chimbalecho chimatembenukira momasuka pa tsinde kuti chiteteze kuphulika kwa nkhope ya disc ndi mphete yapampando. Tsinde limalimbana ndi tsinde lolimba, ndikuchotsa kuphulika kwa tsinde ndi diski pokhudzana.

Kuyenda kwa ma valve a Globe

Kwa ntchito zomwe zimakhala ndi kutentha kochepa, ma valve a Globe nthawi zambiri amaikidwa kuti kupanikizika kumakhala pansi pa disc. Izi zimathandiza kuti ntchito ikhale yosavuta komanso imathandizira kuteteza kulongedza.

Kwa ntchito zokhala ndi ntchito yotentha kwambiri, ma valve a Globe amayikidwa kuti kupanikizika kuli pamwamba pa diski. Kupanda kutero, tsinde limatha kuzizira ndipo limakonda kukweza diski pampando.

Ubwino ndi Kuipa kwa mavavu a Globe

Ubwino:

• Kutha kwabwino kotseka
• Wapakati mpaka wabwino kugwedera
• Sitiroko yayifupi (poyerekeza ndi valavu yachipata)
• Zopezeka mu tee, wye, ndi ma angles, iliyonse imapereka kuthekera kwapadera
• Zosavuta kupanga makina kapena kubwezeretsanso mipando
• Ndi diski yosalumikizidwa ku tsinde, valavu ingagwiritsidwe ntchito ngati valavu yoyang'ana

Zoyipa:

• Kutsika kwamphamvu kwambiri (poyerekeza ndi valve yachipata)
• Pamafunika mphamvu yayikulu kapena chowongolera chokulirapo kuti chikhazikitse valavu (ndi kupanikizika pansi pampando)
• Kuthamanga kumayenda pansi pa mpando ndi shutoff kuyenda pa mpando

Kugwiritsa Ntchito Ma valve Globe

Izi ndi zina mwazomwe zimagwiritsidwa ntchito ndi ma valve a Globe:

• Njira zoziziritsira madzi zomwe zimayenera kuyendetsedwa bwino
• Dongosolo lamafuta amafuta komwe kumayenda kumayendetsedwa komanso kutayikira ndikofunikira
• Malo otsetsereka okwera kwambiri ndi madontho otsika pomwe kutayikira ndi chitetezo ndizofunikira kwambiri
• Madzi odyetsa, chakudya chamankhwala, kutulutsa mpweya wa condenser, ndi makina otulutsa madzi
• Maboiler olowera ndi ngalande, polowera nthunzi zikuluzikulu ndi ngalande, ndi ngalande za chotenthetsera
• Zisindikizo za turbine ndi ma drains
• Turbine lube mafuta system ndi zina