Mu msonkhano Jinbin, atatu mwamakonda anapangama valve a galasichifukwa makasitomala atsala pang'ono kumalizidwa. Ogwira ntchito akugwira ntchito yomaliza pa iwo. Izi ndi fanmawonekedwe akhungu valavusndi kukula kwa DN1450, yokhala ndi chipangizo chamagetsi. Iwo ayesedwa molimba mtima ndikutsegula ndi kutseka mayeso ndipo akuyembekezera kulongedza ndikutumizidwa.

Valavu yamitundu yayikulu yokhala ndi mainchesi a DN1000 ndi pamwambapa ndi zida zazikulu zomwe zidapangidwa kuti zikwaniritse zofunikira zodzipatula pamapaipi akulu akulu akulu kwambiri.

Ponena za ubwino, choyamba ndi ntchito yake yosindikiza bwino. Vavu yamtunduwu nthawi zambiri imatenga mawonekedwe osindikizira awiri a "elastic seal + metal hard seal", yomwe imatha kutulutsa zero ngakhale pansi pa DN1000 ndi pamwambapa. Ndizoyenera makamaka pazochitika zomwe zimakhala ndi zofunikira zosindikizira zolimba monga gasi ndi zofalitsa zapoizoni, kupeŵa vuto la mphamvu yosagwirizana pamtunda wosindikiza chifukwa cha ma diameter akuluakulu.

Kachiwiri, ndiyothandiza kwambiri komanso yosavuta kugwiritsa ntchito. Maonekedwe opangidwa ndi fan ndi ophatikizika kwambiri kuposa mbale yakhungu yachikhalidwe, ndipo kulemera kwake ndi 60% yokha ya valavu yachipata ya m'mimba mwake womwewo. Itha kuphatikizidwa ndi zida zamagetsi ndi pneumatic drive kuti mukwaniritse kutsegula ndi kutseka kwakutali, kuthetsa vuto la ntchito yolemetsa yamanja yamavavu akulu awiri. Kutsegula ndi kutseka kwa valve imodzi nthawi zambiri kumayendetsedwa mkati mwa masekondi a 30, kumapangitsanso bwino ntchitoyo.

Kuphatikiza apo, ili ndi chitetezo champhamvu, chokhala ndi zida zotsekera zamakina ndikusintha masiwichi kuti mupewe kusokoneza. Thupi la valve lakhungu limapangidwa ndi zitsulo zamphamvu kwambiri kapena zitsulo zonyezimira, zomwe zimatha kupirira kuthamanga kwambiri (nthawi zambiri mpaka 1.6MPa) ndi zotsatira zake, ndipo ndizoyenera kugwira ntchito zovuta. Kuphatikiza apo, mtengo wokonza ndi wotsika. Zigawo zosindikizira zimatha kupatulidwa ndikusinthidwa padera popanda kufunika kosokoneza payipi yonse. Ndikoyenera makamaka kwa zochitika zopanga mosalekeza m'mapaipi amtundu waukulu pomwe "kutseka kumatanthauza kutayika".

Zomwe zimagwiritsidwa ntchito zimakhazikika m'malo ofunikira omwe amafunikira magawo akulu akulu: Muumisiri wamafuta am'matauni, nthawi zambiri amagwiritsidwa ntchito pamapaipi akulu am'matauni a gasi achilengedwe okhala ndi mainchesi kuyambira DN1200 mpaka DN2000, kuti akwaniritse magawo achitetezo pakukonza mapaipi ndi kulumikizidwa kwa nthambi, kupewa kutuluka kwakukulu kwa gasi. M'magawo am'mlengalenga ndi vacuum distillation ndi magawo othandizira amafuta amafuta, mapaipi akulu onyamula mafuta osakanizika ndi mafuta oyengeka okhala ndi mainchesi opitilira DN1000 amafunika kusinthana pafupipafupi kapena kudzipatula zida.

Makhalidwe awo otsegula ndi kutseka mofulumira amatha kuchepetsa nthawi yosokoneza kupanga. Mu yonyowa desulfurization / denitrification kachitidwe makampani mphamvu, ndi oyenera mapaipi chachikulu chitoliro mpweya ndi awiri a DN1500 kapena kuposa, ndipo akhoza kudzipatula mkulu-kutentha chitoliro mpweya (ndi kutentha kukana kwa 300 ℃) pa riyakitala kukonza. Dongosolo lochotsa fumbi louma la gasi wang'anjo wophulika m'makampani opanga zitsulo zimafunikira kuti mapaipi opatsira gasi okhala ndi DN1200 ndi kupitilira apo azitha kugonjetsedwa ndi kukokoloka kwa media okhala ndi fumbi. Mapangidwe ake achitsulo osindikizira mwamphamvu amatha kugwira ntchito mokhazikika kwa nthawi yayitali.

Monga 20 wazaka wopanga mavavu metallurgical (Electric Blind Valve), Jinbin Mavavu amapereka makasitomala ndi njira apamwamba kulamulira madzimadzi ndi utumiki mmodzi-m'modzi. Ngati muli ndi mafunso okhudzana ndi izi, chonde titumizireni pansipa ndipo mudzalandira yankho mkati mwa maola 24!