Ma Valve Atsopano Otenthetsera Awiri Awiri Pakutentha Kwambiri, Malo Opanikizika Kwambiri

1. Mawu Oyamba

Mavavu ndi zida zofunika zomwe zimagwiritsidwa ntchito poyang'anira kutuluka kwamadzimadzi, kupanikizika ndi kayendedwe ka kayendedwe ka madzimadzi. Amagwiritsidwa ntchito kwambiri mu petroleum, mankhwala, mphamvu yamagetsi, zitsulo ndi mafakitale ena. M'malo otentha komanso othamanga kwambiri, ma valve amafunika kukhala ndi zofunikira zowonjezereka, osati kungofuna kuti azikhala ndi ntchito yabwino yosindikizira, komanso amafunikira kuti azikhala ndi kutentha kwakukulu komanso kupanikizika. Monga valavu ya mafakitale apamwamba kwambiri, valavu ya mpira wa welded iwiri yakhala ikugwiritsidwa ntchito kwambiri m'munda wa kutentha kwakukulu ndi kuthamanga kwakukulu chifukwa cha mapangidwe ake apadera komanso ntchito zapamwamba.

2. Makhalidwe amapangidwe a welded awiri-chidutswa mavavu mpira

2.1. Mapangidwe osavuta: Vavu yamagulu awiri a mpira amapangidwa makamaka ndi thupi la valavu, mpira, mpando wa valve, tsinde la valve, mphete yosindikiza ndi zigawo zina. Ili ndi dongosolo losavuta, lolemera kwambiri, ndipo ndilosavuta kukhazikitsa ndi kusamalira.

2.2. Kuchita bwino kusindikiza: Mpira ndi mpando wa valve zimatengera kusindikiza kumaso, ndi malo akuluakulu osindikizira ndi ntchito yabwino yosindikiza, yomwe imatha kukwaniritsa zofunikira zosindikizira pansi pa kutentha kwakukulu ndi malo ovuta kwambiri.

2.3. Kuthamanga kofulumira ndi kutseka: Valavu yotsekedwa yamagulu awiri a mpira imatenga 90 ° kuzungulira kwa mpira kuti akwaniritse kutsegula ndi kutseka, ndi kutsegula ndi kutseka mofulumira ndi ntchito yosavuta.

2.4. Kukaniza kwakung'ono: Njira ya mpira idapangidwa ndi mainchesi athunthu, kukana koyenda pang'ono, kuthamanga kwakukulu, ndipo imatha kuchepetsa kugwiritsa ntchito mphamvu kwadongosolo.

2.5. Kutentha kwabwino ndi kukana kukanikiza: Valavu yowotcherera yokhala ndi magawo awiri amapangidwa ndi zida zapadera, imakhala ndi kutentha kwambiri komanso kukana kupanikizika, ndipo ndi yoyenera kutentha kwambiri komanso malo othamanga kwambiri.

2.6. Mitundu yosiyanasiyana yamagalimoto: pamanja, magetsi, pneumatic, hydraulic ndi mitundu ina yamagalimoto imatha kusankhidwa malinga ndi zosowa zenizeni.

3. Ntchito milandu welded awiri-chidutswa mavavu mpira mu kutentha kwambiri ndi madera kuthamanga kwambiri

3.1. Petrochemical industry

Mu gawo loyenga la bizinesi ya petrochemical, kutentha kwapakati kumakhala kokwera mpaka 400 ℃ ndipo kupanikizika kumafika 10MPa. Pachida ichi, valavu yamagulu awiri a mpira imagwiritsidwa ntchito ngati chida chofunikira chowongolera kutuluka kwamadzi ndi kupanikizika. Pambuyo pa zaka zogwira ntchito, valve ya mpira yawonetsa ntchito yabwino yosindikiza komanso kutentha ndi kupanikizika, kuonetsetsa kuti chipangizochi chikugwira ntchito mokhazikika.

3.2. Makampani opanga magetsi

M'makina opangira madzi opangira magetsi otentha, kutentha kwapakati ndi 320 ℃ ndipo kupanikizika ndi 25MPa. M'dongosolo lino, valavu ya mpira wamagulu awiri amagwiritsidwa ntchito ngati chipangizo chodula komanso chowongolera. Pogwira ntchito kwenikweni, valve ya mpira imasonyeza zizindikiro za kutsegula mofulumira ndi kutseka mofulumira, ntchito yabwino yosindikizira, ndi kutentha kwakukulu ndi kukana kupanikizika, kupereka chitsimikizo cholimba cha ntchito yotetezeka komanso yokhazikika ya zomera zamphamvu zotentha.

3.3. Makampani opanga zitsulo

Mu mzere wopangira zitsulo zotentha, kutentha kwapakati ndi 600 ℃ ndi kuthamanga ndi 15MPa. Mu mzere wopanga uwu, valavu yowotcherera yamitundu iwiri imagwiritsidwa ntchito ngati chipangizo chowongolera. Valavu ya mpira imasonyeza ntchito yabwino pansi pa kutentha kwakukulu ndi malo opanikizika kwambiri, kukwaniritsa zofunikira zopangira mzere wopangira.

4. Njira zodzitetezera pakugwiritsa ntchito mavavu amipira awiri otenthetsera kutentha kwambiri komanso malo othamanga kwambiri.

4.1. Sankhani zipangizo zoyenera: Malingana ndi kutentha kwenikweni kwa ntchito ndi kupanikizika, sankhani zipangizo zokhala ndi kutentha kwambiri komanso kupanikizika kuti mutsimikizire kuti moyo wautumiki wa valve ya mpira mu kutentha kwakukulu ndi malo othamanga kwambiri.

4.2. Mapangidwe osindikizira okhwima: Mapangidwe osindikizira ndiye chinsinsi cha mavavu amipira awiri. Zida zosindikizira zoyenera ziyenera kusankhidwa kuti zitsimikizire kusindikiza kwa valve ya mpira mu kutentha kwakukulu ndi malo othamanga kwambiri.

4.3. Konzani njira yoyendetsera: Malinga ndi zosowa zenizeni, sankhani njira yoyenera yoyendetsera galimoto kuti muwongolere magwiridwe antchito ndi makina opangira valavu ya mpira.

4.4. Kuyendera ndi kukonza nthawi zonse: Pansi pa kutentha kwakukulu ndi malo othamanga kwambiri, ntchito yosindikiza ndi kutentha ndi kupanikizika kwa valve ya mpira kumakhudzidwa mosavuta. Choncho, valavu ya mpira iyenera kuyang'aniridwa ndi kusungidwa nthawi zonse kuti zitsimikizire kuti zimagwira ntchito bwino.

4.5. Oyendetsa Sitimayi: Limbikitsani maphunziro a ogwira ntchito, kupititsa patsogolo luso lawo la ntchito, ndi kuchepetsa kulephera kwa valve valve chifukwa cha ntchito yosayenera.

Valavu yowotcherera yamagulu awiri imakhala ndi ntchito yabwino kwambiri yogwiritsira ntchito pansi pa kutentha kwakukulu komanso malo othamanga kwambiri, kupereka chitsimikizo champhamvu cha mafuta, mankhwala, mphamvu yamagetsi, zitsulo ndi mafakitale ena. Pakugwiritsa ntchito kwenikweni, zida zoyenera ziyenera kusankhidwa molingana ndi momwe zimagwirira ntchito, kusindikiza kokhazikika, kukhathamiritsa kwagalimoto, kuyang'anira ndi kukonza nthawi zonse, komanso maphunziro oyendetsa ayenera kulimbikitsidwa kuti awonetsetse kuti valavu ya mpira ikugwira ntchito motetezeka komanso yokhazikika pansi pa kutentha kwambiri komanso kutentha kwambiri. kupanikizika chilengedwe. Ndi chitukuko chosalekeza chaukadaulo wamafakitale, valavu yowotcherera yamitundu iwiri idzakhala ndi gawo lofunikira m'minda yambiri.