Kodi Valve Yoyang'anira ndi Chiyani: Buku Lotsogolera la Mtundu ndi Standard?

Chidule cha Chongani Valavu

Valavu yowunikira ndi valavu yodziyimira yokha yomwe imagwiritsa ntchito kuthamanga kwa madzi ndi kulemera kwa disc kuti ipewe kuyenda mobwerera m'mbuyo. Imadziwikanso kuti valavu yosabwerera, njira imodzi, reflux, kapena isolation, ntchito yake yayikulu ndikuwonetsetsa kuti kuyenda kwa mapaipi kumayenda mbali imodzi kuti ateteze makina a mapaipi ku kuwonongeka kwa kubwerera m'mbuyo.

Momwe Ma Valves Oyang'anira Amagwirira Ntchito

Kuyenda patsogoloKupanikizika kwa madzi kumakweza diski, zomwe zimathandiza kuti idutse.

Kuyenda mobwerera m'mbuyo: Disiki imatseka kudzera mu mphamvu yokoka/madzimadzi, ndikutseka media.

Zigawo Zofunika Kwambiri za Ma Check Valve

Mbali zofunika kwambiri ndi izi:

Thupi la Vavu: Mapaipi olumikizira akunja

Disiki: Chigawo choyendetsa chomwe chimalola kuyendetsa bwino

Mpando: Amapanga pamwamba potseka ndi diski

Masika: Zimakakamiza kutseka kwa disc (mu mitundu yothandizira masika)

Chongani Chizindikiro cha Valve mu Chithunzi cha PID

Kumvetsetsa Chizindikiro cha Valve Yoyang'anira

1.Mzere: Imayimira thupi la valavu.

2.Muvi kapena Mzere Wopingasa: Zimasonyeza komwe madzi akuyenda. Izi ndizofunikira kwambiri poyika, chifukwa zimaonetsetsa kuti valavu yayikidwa bwino mkati mwa dongosolo.

3.Zolemba Zowonjezera: Nthawi zina, zolemba zina kapena zilembo zingatsatire chizindikirocho kuti zipereke zambiri, monga kukula kwa valavu, zinthu, kapena kuchuluka kwa kupanikizika.

Yang'anani Miyezo Yopangira Ma Vavu

Kutsatira malamulo kumakhudza miyezo ya dziko, mafakitale, ndi yapadziko lonse ya zipangizo, zomangamanga, magwiridwe antchito, ndi kukhazikitsa:

Miyezo Yapadziko Lonse

API 594: Imaphimba ma valve oyezera ma wafer/lug a mapaipi amafuta/gasi

ASME B16.34: Mapangidwe a ma valve opindika/opindika

API 6DMa valve a mapaipi (ma valve a mpira/cheke/chipata) a mafakitale a mafuta

Miyezo Yadziko Lonse Yachi China

GB/T12233-2006Ma valve oyezera kukweza kwachitsulo (≤PN40)

GB/T13932-1992: Ma valve oyezera kugwedezeka kwachitsulo (DN50-DN1800, madzi/nthunzi)

GB/T12235-2007: Ma valve oyesera achitsulo a makina amafuta okhala ndi T/P yambiri

Miyezo Yapadera ya Ma Vavu

CJ/T282-2008: Ma valve owunikira a gulugufe pang'onopang'ono (malo otulutsira mapampu)

GB/T21387-2008: Ma valve owunikira kuyenda kwa mpweya (kukana kuyenda kwa mpweya pang'ono)

Zofunikira Zosankha & Kapangidwe

KukulaMtundu wa swing wa ≤350mm; gulugufe wa ≥400mm

Kupanikizika kwambiri(≥4.0MPa): Gwiritsani ntchito ma valve awiri kapena valavu + kutseka kwadzidzidzi

Kuyesa: Mayeso a kuthamanga kwa chipolopolo cha PN 1.5x; Mayeso a chisindikizo cha PN 1.1x zero-leak

Ubwino wa Chongani Valve

Mapindu a Kapangidwe ndi Kugwira Ntchito

Wodziyendetsa yekha: Sipakufunika mphamvu yakunja (mphamvu yokoka/kasupe/yoyendetsedwa ndi madzi)

Yankho lachangu: Kutseka kwa ≤0.05s (ma vacuum valves) kumaletsa kuipitsidwa kwa backflow

Mapangidwe osiyanasiyana:

• Mtundu wa chikwezo: Chisindikizo chapamwamba kwambiri cha media yoyera kwambiri
• Mtundu wozungulira: Kukana kochepa kwa mapaipi okhala ndi tinthu tating'onoting'ono
• Ma diski awiri: Ang'onoang'ono a makina opanda malo ambiri

Magwiridwe antchito ndi chitetezo

• Zimaletsa kuyenda kwa zinthu zowononga mphamvu ya nyukiliya/mankhwala (zomera za nyukiliya/mankhwala)

• Amachepetsa kuwonongeka kwa nyundo yamadzi pogwiritsa ntchito njira zotseka mwachangu

• Imasunga umphumphu wa vacuum (10⁻⁶~10⁻⁸ Pa·m³/s kutayikira)

Zachuma & Kugwirizana

• Kugwiritsa ntchito mphamvu moyenera: Kusagwiritsa ntchito mphamvu nthawi zonse

• Zinthu zosiyanasiyana: Chitsulo chosapanga dzimbiri/ceramic/fluororubber (-200°C~800°C)

• Kugwiritsa ntchito mafakitale osiyanasiyana: Madzi/mafuta/gasi/HVAC/mankhwala

Mapulogalamu Odziwika

Zimaletsa kubwerera m'mbuyo pazochitika zofunika kwambiri:

• Machitidwe a Madzi: Malo opopera madzi, malo okwera kwambiri operekera madzi, mipiringidzo yoperekera madzi m'boiler

• Mankhwala/High-T: Kusamutsa zinthu zowononga, makina a nthunzi okwana 400°C+

• Milandu Yapadera: Mapampu ozimitsa moto (kuteteza madzi ku nyundo), mpweya wopanikizika, mapaipi amafuta

Malangizo Osankha: Ganizirani kukhuthala kwa media, kuthamanga, ndi kayendedwe ka madzi. Ikani bwino (monga mitundu yokweza molunjika).

Kugawa Ma Valve Oyang'anira

Ndi Kapangidwe

• Ma Vavu Oyezera Kukweza:

Kusuntha kwa ma disc oyima (kothandizidwa ndi masika/mphamvu yokoka)

Zabwino kwambiri pa DN≤200mm zotsukira (makina amadzi)

•Ma Vavu Oyesera Kugwedezeka:

Disiki imazungulira pa hinge pin

Kukana kochepa kwa mapaipi akuluakulu

Mitundu yaing'ono: Flanged, wafer, single-disc

•Ma Valves Oyang'anira Mapepala Awiri:

Kapangidwe kakang'ono ka wafer

Yabwino kwambiri pamakina oteteza moto

• Ma Vavu Oyang'anira Kuyenda kwa Axial:

Kutsetsereka kwa diski pamzere

Amachepetsa nyundo yamadzi (mapaipi a gasi)

• Mitundu Yapadera

Diaphragm: Yosagwira dzimbiri pa mankhwala ophera tizilombo

Mpira: Makina ang'onoang'ono okhala ndi mabowo akuluakulu

Mphuno: Kulamulira kayendedwe ka madzi mbali zonse ziwiri

Valavu Yoyang'ana Bonnet Yotsekereza Yotsekeka:Gwirani ntchito pa kuthamanga kwa magazi (Kalasi 900, Kalasi 1500, Kalasi 2500), Kutentha Kwambiri.

•Gulu Lachiwiri

Kulumikizana: Yopindika, yolumikizidwa, yolumikizidwa, yokulungidwa

Kupanikizika: Low-P (≤1.6MPa), high-P (≥100MPa)

Ntchito: Chete, kutseka pang'onopang'ono, kubwerezabwereza kwa magazi