Kodi Ma Valves a Mpira Angagwiritsidwe Ntchito pa Nthunzi: Buku Lophunzitsira

Ma valve a mpira amagwiritsidwa ntchito kwambiri m'mafakitale, koma kugwirizana kwawo ndi makina a nthunzi nthawi zambiri kumabweretsa mafunso. Nkhaniyi ikufotokoza ngati ma valve a mpira amatha kuthana ndi nthunzi, ubwino wawo, mitundu yoyenera, komanso momwe mungasankhire opanga odalirika.

Kodi Valavu ya Mpira N'chiyani?

Vavu ya mpira ndi valavu yozungulira kotala yomwe imagwiritsa ntchito mpira wobowoka, wobowoka, wozungulira kuti ilamulire kuyenda kwa madzi. Dzenje la mpira likagwirizana ndi payipi, kuyenda kwake kumaloledwa; kulizungulira madigiri 90 kumatseka kuyenda kwake. Mavavu a mpira amadziwika kuti ndi olimba komanso otseka bwino, ndipo ndi otchuka m'mafakitale amafuta, gasi, madzi, ndi mankhwala.

Makhalidwe a Steam

Mpweya wotentha ndi mpweya wamphamvu kwambiri womwe umapangidwa ndi madzi otenthetsera. Makhalidwe ake ofunikira ndi awa:

• Kutentha kwambiri: Makina a nthunzi nthawi zambiri amagwira ntchito pa 100°C–400°C.
• Kusinthasintha kwa kuthamanga kwa magazi: Mizere ya nthunzi ingasinthe mphamvu mofulumira.
• Kuwononga: Zodetsa m'madzi zimatha kupanga condensate yowononga.

Makhalidwe amenewa amafuna ma valve okhala ndi zipangizo zolimba, kukhazikika kwa kutentha, komanso kutseka kodalirika.

Ubwino wa Ma Valves a Mpira mu Machitidwe a Nthunzi

1. Kugwira Ntchito Mwachangu: Kutembenuka kwa madigiri 90 kumathandiza kuti mpweya uzizimitsidwe mwachangu, zomwe ndizofunikira kwambiri pakuchotsa nthunzi mwadzidzidzi.
2. Kusindikiza Kwabwino Kwambiri: Mipando ya PTFE kapena graphite imatsimikizira kuti palibe kutayikira kwa madzi pansi pa kupanikizika kwakukulu.
3. Kulimba: Kapangidwe ka chitsulo chosapanga dzimbiri kapena aloyi kamalimbana ndi dzimbiri komanso kutentha kwambiri.
4. Kusamalira Kochepa: Kapangidwe kosavuta kamachepetsa kuwonongeka ndi nthawi yopuma.

Mitundu ya Ma Vavulovu a Mpira Oyenera Kugwiritsidwa Ntchito ndi Nthunzi

Si ma valve onse a mpira omwe amagwirizana ndi nthunzi. Mitundu yofunika kwambiri ndi iyi:

1. Ma Vavu a Mpira Wonse Wokhala ndi Madoko: Chepetsani kutsika kwa mphamvu ya mpweya m'mizere ya nthunzi yothamanga kwambiri.
2. Ma Vavu a Mpira Oyandama: Yabwino kwambiri pa makina a nthunzi omwe ali ndi mphamvu zochepa mpaka zapakati.
3. Ma Valves a Mpira Okwera ndi Trunnion: Gwirani nthunzi yamphamvu kwambiri ndi mphamvu yocheperako yogwirira ntchito.
4. Ma Valves Otentha Kwambiri: Mipando yolimba (monga mipando yokhala ndi zitsulo) ndi nthambi zotambasuka kuti ziteteze zisindikizo.

Opanga Opanga Valavu ya Mpira Wotentha Kwambiri

Opanga odziwika bwino ndi awa:

• Spirax Sarco: Amagwira ntchito kwambiri ndi zinthu zina zogwiritsa ntchito nthunzi.
• Velan: Amapereka ma valve a mpira omwe amatentha kwambiri komanso amphamvu.
• Swagelok: Amadziwika ndi ma valve opangidwa mwaluso kwambiri.
• Emerson (Fisher): Amapereka njira zothetsera nthunzi zapamwamba kwambiri m'mafakitale.
• Valavu ya Newsway (NSW): M'modzi mwaMitundu Khumi Yapamwamba ya Ma Valve aku China

Kusankha Fakitale ya Valavu ya Mpira wa Nthunzi

Mukasankhawopanga mavavu a mpira, taganizirani izi:

1. Ziphaso: ISO 9001, API 6D, kapena kutsatira malamulo a PED.
2. Ubwino wa ZinthuMa valve ayenera kugwiritsa ntchito chitsulo chosapanga dzimbiri kapena zitsulo zopangidwa ndi ASTM.
3. Miyezo YoyeseraOnetsetsani kuti ma valve akuyesedwa ndi hydrostatic ndi thermal cycling.
4. KusinthaYang'anani mafakitale omwe amapereka mapangidwe apadera a ntchito zapadera za nthunzi.
5. Thandizo Pambuyo pa KugulitsaZitsimikizo ndi thandizo laukadaulo ndizofunikira kwambiri.

Mapeto

Ma valve a mpira angagwiritsidwe ntchito pa makina a nthunzi akapangidwa ndi zipangizo zotentha kwambiri komanso zotseka mwamphamvu. Kusankha mtundu woyenera ndi wopanga wodalirika kumatsimikizira chitetezo, magwiridwe antchito, komanso moyo wautali m'malo ovuta a nthunzi. Nthawi zonse tsimikizirani zomwe mukufuna ndi wogulitsa wanu kuti mugwirizane ndi magwiridwe antchito a valavu ndi zofunikira za makina anu.