Chiyambi:

Pakugwiritsa ntchito tsiku ndi tsiku kwa ogwiritsa ntchito ma valve agulugufe ambiri, nthawi zambiri timawonetsa vuto, ndiko kuti, valavu yayikulu yagulugufe yomwe imagwiritsidwa ntchito pakupanikizana kosiyana ndi media yayikulu, monga nthunzi, madzi othamanga kwambiri ndi ntchito zina zopanikizidwa, nthawi zambiri zimakhala zovuta kwambiri. zovuta kutseka, ngakhale zovuta kutseka, nthawi zonse anapeza kuti padzakhala kutayikira chodabwitsa, n'kovuta kutseka mwamphamvu, chifukwa cha vuto chifukwa structural kamangidwe ka valavu ndi malire a munthu wa mlingo wa torque yotulutsa ndi wosakwanira. ‍

Kusanthula kwazifukwa zovutira kusintha ma valve akulu awiri

Mphamvu yotulutsa yopingasa yopingasa ya munthu wamkulu ndi 60-90kg, kutengera kukula kwa thupi.

Mayendedwe ambiri a gulugufe amapangidwa kuti azikhala otsika komanso okwera, munthu akatseka valavu, thupi la munthu limakankhira mozungulira gudumu lamanja kuti lizungulire, kotero kuti valavu imayenda pansi kuti itseke, yomwe imayenera kutsekedwa. gonjetsani kuphatikizika kwa mphamvu zitatu, zomwe ndi:

1) Axial pamwamba kukankhira Fa;

2) kulongedza ndi tsinde kukangana mphamvu Fb;

3) Tsinde ndi valavu core kukhudzana Fc

Torque yonse ndi ∑M=(Fa+Fb+Fc)R

Monga momwe tikuonera, kukula kwa caliber, kuwonjezereka kwa axial kukankhira mphamvu, pamene pafupi ndi malo otsekedwa, mphamvu ya axial thrust ili pafupi kwambiri ndi kuthamanga kwenikweni kwa netiweki ya chitoliro (chifukwa cha kutsekedwa kwa P1-P2 ≈ P1 P2 = 0)

Ngati DN200 caliber butterfly valavu ikugwiritsidwa ntchito pa 10bar nthunzi chitoliro, choyamba kutseka axial kukankhira Fa = 10 × πr2 = 3140kg, ndi yopingasa circumferential mphamvu yofunika kutseka ndi pafupi malire a yopingasa circumferential mphamvu kuti akhoza kutulutsa. kuchokera ku thupi laumunthu, choncho zimakhala zovuta kwambiri kuti munthu atseke valavuyi pansi pazimenezi.

Zoonadi, mafakitale ena amalimbikitsa kukhazikitsa mtundu uwu wa valve m'mbuyo, zomwe zimathetsa vuto la kutseka, koma vuto lazovuta kutsegula pambuyo potseka. ‍

 

Large awiri magetsi flange gulugufe wopanga Tianjin Zhongfa Vavu-ZFA luso dipatimenti kutsirizitsa, lalikulu awiri magetsi flange gulugufe valavu kutayikira zifukwa ali ndi zinthu zosiyanasiyana malinga ndi machitidwe osiyanasiyana, pali zifukwa zosiyanasiyana, zotsatirazi kusanthula milandu iwiriyi:

 

Choyamba, nthawi yomanga chifukwa chachikulu awiri magetsi flange gulugufe valavu mkati kutayikira zifukwa: 

① zoyendera ndi kunyamula molakwika chifukwa chonse kuwonongeka kwa lalikulu awiri magetsi flange gulugufe valavu, motero kuchititsa lalikulu magetsi flange valavu gulugufe kutayikira;

② fakitale, pambuyo kuthamanga madzi sanali kusewera lalikulu awiri magetsi flange gulugufe valavu kuyanika ndi anticorrosion mankhwala, chifukwa mu mapangidwe kutayikira mkati kusindikiza pamwamba dzimbiri;

③ chitetezo malo omanga si m'malo, lalikulu awiri magetsi flange gulugufe valavu si anaika pa malekezero akhungu, mvula, mchenga ndi zonyansa zina mu mpando valavu, chifukwa kutayikira;

④ Pakuyika, palibe mafuta omwe amabayidwa pampando wa valve, zomwe zimapangitsa kuti zinyalala zilowe kumbuyo kwa mpando wa valve, kapena kuyaka komwe kumachitika chifukwa cha kutuluka kwamkati mkati mwa kuwotcherera;

⑤ Valavu sinayikidwe pamalo otseguka, ndikuwononga mpira. Pa kuwotcherera, ngati valavu siili yotseguka bwino, kuwotcherera sipatsira kumayambitsa kuwonongeka kwa mpira, ndipo pamene mpira wokhala ndi kuwotcherera spatter umayatsidwa ndi kuzimitsidwa, umayambitsa kuwonongeka kwa mpando wa valve, motero kumabweretsa mkati. kutayikira;

⑥ kuwotcherera slag ndi zotsalira zina zomanga zomwe zimayambitsidwa ndi kusindikiza pamwamba;

fakitale kapena nthawi yoyika malo olakwika chifukwa cha kutayikira, ngati valavu ya tsinde la galimoto kapena zipangizo zina ndi kusalinganika kwa ngodya ya msonkhano, valavu yagulugufe yamtundu waukulu wamagetsi idzatuluka.

 

Chachiwiri, nthawi ntchito chifukwa lalikulu awiri magetsi flange gulugufe kutayikira zifukwa:

① Chifukwa chodziwika bwino ndi chakuti woyang'anira ntchito amaganizira zamtengo wapatali wokonza valavu ya butterfly yamphamvu kwambiri, kapena kusowa kwa sayansi yaikulu yamagetsi yamagetsi a butterfly ndi njira zosamalira magetsi akuluakulu. valavu ya butterfly ya flange sichita kukonza zodzitetezera, zomwe zimapangitsa kuti zida ziwonongeke pasadakhale;

② kugwira ntchito molakwika kapena ayi molingana ndi njira zokonzetsera zokonzedwa ndi kutayikira kwamkati;

③ Pantchito yanthawi zonse, zotsalira zomanga zimakanda pamalo osindikizira, zomwe zimapangitsa kutayikira mkati;

④ Kuyeretsa zitoliro molakwika kumayambitsa kuwonongeka kwa malo osindikizira zomwe zimapangitsa kutayikira mkati;

⑤ Kusakonza kwanthawi yayitali kapena kusagwira ntchito kwa valavu yagulugufe yamagetsi yamtundu waukulu, zomwe zimapangitsa mpando wa valavu ndi kugwira mpira, zomwe zimapangitsa kuwonongeka kosindikiza pamene mukusintha valavu yagulugufe yamagetsi yamtundu waukulu kuti mupange kutayikira mkati;

⑥ lalikulu m'mimba mwake magetsi flange gulugufe lophimba si m'malo chifukwa kutayikira mkati, lalikulu m'mimba mwake lalikulu magetsi flange gulugufe valavu mosasamala kanthu kutsegula ndi kutseka udindo, zambiri kuweramira 2 ° ~ 3 ° zingachititse kutayikira;

⑦ Mavavu agulugufe agulugufe okhala ndi mainchesi akulu okhala ndi mainchesi akulu amakhala ndi tsinde, ngati atagwiritsidwa ntchito kwa nthawi yayitali, chifukwa cha dzimbiri ndi dzimbiri komanso zifukwa zina pakati pa tsinde ndi tsinde loyimitsa tsinde zimaunjikira dzimbiri, fumbi, utoto ndi zina. zinyalala, zinyalala izi zidzachititsa lalikulu m'mimba mwake magetsi flange gulugufe valavu sangathe zimayenda m'malo ndi chifukwa kutayikira - ngati lalikulu m'mimba mwake magetsi valavu yagulugufe ya flange Yakwiriridwa, kutalikitsa tsinde la valavu kumatulutsa ndi kugwa dzimbiri komanso zonyansa zimalepheretsa kuzungulira kwa mpira wa vavu m'malo mwake, zomwe zimapangitsa kuti ma valve agulugufe atayike.

⑧ General actuator ilinso ndi malire, ngati chifukwa cha nthawi yayitali cha dzimbiri, kuumitsa mafuta kapena ma bolts omasuka kumapangitsa malirewo kukhala olakwika, zomwe zimapangitsa kutayikira mkati;

⑨ valavu yamagetsi yamagetsi yolowera kutsogolo, yosagwirizana ndi yomwe imayambitsa kutayikira mkati;

⑩ kusowa kukonzanso ndi kukonza nthawi ndi nthawi, zomwe zimapangitsa kuti mafuta asindikize owuma, owumitsidwa, owuma osindikizira adziunjike pampando wa valve zotanuka, zomwe zimalepheretsa kusuntha kwa mpando wa valve, zomwe zimapangitsa kuti chisindikizo chilephereke.

ZFA Valve Factory ili ndi magulu a akatswiri a QC kuti awonetsetse kuti valavu iliyonse ya fakitale mkati ndi maonekedwe ndi yomveka. Nthawi yomweyo, tili ndi ukadaulo waukadaulo komanso magulu otsatsa pambuyo -othandizira makasitomala kuthana ndi mavuto osiyanasiyana omwe amakumana nawo pakukhazikitsa ndikugwiritsa ntchito.