Kodi Ma Valves a Mpira Angagwiritsidwe Ntchito Pa Nthunzi​: Buku Lotsogolera Kusankha Ma Valves a Pipeline

Buku Lotsogolera Kusankha Valavu ya Mapaipi a Nthunzi: Zofunikira pa Valavu ya Mpira ndi Mitundu Yodziwika

Makina opangira nthunzi m'mafakitale amafuna kusankha bwino ma valavu kuti akhale otetezeka komanso ogwira ntchito bwino.Ma valve a mpiraGwirani ntchito m'mapaipi a nthunzi pokhapokha ngati mukukwaniritsa zofunikira: kukana kutentha/kupanikizika kwambiri, kutseka kolimba, ndi mapangidwe apadera a nthunzi (monga ma valve a mpira olimba otsekedwa mokwanira). Nayi njira yodziwira zaukadaulo:

1. Zofunikira Zofunikira pa Ma Valves a Mpira wa Nthunzi

◼ Miyezo ya Zinthu ndi Kapangidwe kake

• Zipangizo Zotentha Kwambiri: Ma valve amafunika chitsulo chopangidwa ndi ASTM A216 WCB kapena chofanana nacho.
• Kapangidwe ka Full-Bore: Kumatsimikizira kuti madzi akuyenda bwino; kalasi ya kuthamanga iyenera kufanana ndi mapaipi (monga, Gulu 150 = 2.0MPa).

◼ Kugwira Ntchito Yotseka

• Zisindikizo Zolimba Zokha: Zisindikizo zofewa zimalephera kugwira ntchito kutentha kwa nthunzi (>150°C).
• Kuzungulira Kokhazikika: Mapangidwe a mipira yoyandama/yokhazikika ayenera kuchepetsa kuwonongeka.

◼ Njira Zabwino Zogwirira Ntchito

• Kukhazikitsa Tsinde Loyima: Kumathandizira kusintha kwachangu kwa 90° komanso kupewa kutuluka kwa madzi.

◼ Malangizo Ofunika Opewera

• Kugwiritsa Ntchito: Ndikwabwino kwambiri pozimitsa/kusintha nthunzi mwachangu m'malo opangira mafuta, mankhwala, ndi magetsi.
• Malire a Kuyenda: Kuthamanga >40m/s kumayambitsa kukokoloka kwa nthaka - sankhani zitsanzo kutengera kuchuluka kwa kuyenda kwa mapaipi.
• Kusamalira: Yang'anani zisindikizo kotala lililonse, chotsani ndalama zamkati, ndikutsatira malangizo a OEM.

2. Ma Valves Atatu Apamwamba Oyerekeza a Mapaipi a Nthunzi

3. Zofunikira pa Valavu Yotentha Yonse

Ma valve onse a nthunzi ayenera kukhala ndi:

1. Kukana Kutentha Kwambiri: Kugwira ntchito kosalekeza >150°C.
2. Chitetezo ku dzimbiri: Gwiritsani ntchito chitsulo chosapanga dzimbiri cha 316L kuti mugwiritse ntchito nthunzi yowononga.
3. Zisindikizo Zopanda Kutaya Madzi: Kuteteza kutayika kwa mphamvu ndi zoopsa zachitetezo.

4. Kutsatira Malamulo ndi Kusankha Miyezo

• Ma Code Apadziko Lonse: Tsatirani API 600, ASME B16.34, DIN/EN popanga/kuyesa.
• Zofunikira Zosankha: Gwirizanitsani zidziwitso za valavu ndi kuthamanga kwa payipi, kutentha, kuchuluka kwa madzi, ndi media.
• Kukhazikitsa: Tsatirani ANSI B31.1 kuti chitetezo cha makina a nthunzi chikhale chotetezeka.

Chidule:

Ma valve a mpira ozungulira, chipata, ndi ogwirizana ndi omwe amasankhidwa kwambiri pa mapaipi a nthunzi. Ikani patsogolo ma valve a mpira otsekedwa bwino okhala ndi matupi a ASTM WCB, tsimikizirani kuchuluka kwa madzi (<40m/s), ndikukhazikitsa kukonza kokhazikika.