Ivalvunchibelesyo chibelesyegwa mukutola akulela muya amaanzi kakuli myaka iitasiki kucuulu.
Kwalino, munzila yamapayipi aamaanzi, vvalavu yeendelezya njiyeendelezya, mpo mulimo wayo mupati ngwakwaandaanya zibelesyo anzila yamapayipi, kweendelezya kweenda, kulesya kujokela musyule, kweendelezya akugwisya muya. Mbwaanga nchintu chipati kusala vvalavu yeelede kweendelezya nzila yamapaipi, nchintu chipati loko kumvwisisisya bube bwa vvalavu antaamu anzila zyakusala vvalavu.
Kusinikizyigwa kwavalvu
Ikuyuminina kwavalvu kwaamba kusinikizyigwa kwakapegwa kweendelana anguzu zyamapaipi, nkokuti, nkuyuma kwakubelesya kwavalvu achiindi chakutontola, eecho chijatikizya zintu zya valve. Inguzu zyakubeleka tazili zyeelene pe, aboobo, nguzu zyamumuni nchintu chiyeeme aachibelesyo cha valve mpawo chiliswaangene akupya kwakubeleka kuzumizyidwe anguzu zyakubeleka zyachintu eecho.
Ivalvu nchintu chibelesegwa munzila yakuzungaanya maanzi aakati-akati naakuti nzila yakusinkilila, eeyo iibelesyegwa kuchincha kweenda naakuti nguzu zyamukati. Imwi milimu ibikkilizya kujala naa kujula nzila zyakubelesya, kweendelezya kweenda, kuchincha nzila kweenda kwazibelesyo, kulesya nzila zyakutondezya kuti zitajoki, akweendelezya naa kugwisya muya.
Milimu eyi ilazuzikizigwa akubambulula busena bwakujala kwavalvu. Ooku kuchincha kulakonzya kuchitwa amaanza naakuti kuchitwa alikke. Kubelesya amaanza akwalo kubikkilizya akubelesya kweendelezya mootokala amaanza. Mavwili abelesyegwa amaanza aitwa kuti mavwili abelesyegwa amaanza. Ivalvu iilesya maanzi kuti azwe musule yiitwa kuti check valve; eeyo yeendelezya nguzu zyakugwisya muya wiitwa kuti vvalavu yakukwabilila naakuti vvalavu yakukwabilila.
Kusikila lino, makwebo aamavwili akakonzya kupanga zintu zyoonsemavalvu aamulyango, mavalvu aa globe, mavalvu aa throttle, mavalvu aapulagi, mavalvu aamabbola, mavalvu aamagesi, mavalvu aakweendelezya diaphragm, mavalvu aakulanga, mavalvu aakwabilila, mavalvu aakucesya busi, mavalvu aakukwabilila busi alimwi amavalvu aakujala muchiindi cheenzu. Zintu zya Valve zili muzibeela zili kkumi azibili, zibeela ziinda ku 3000, antoomwe azintu ziinda ku 4000; muya mupati wakubeleka ngu 600MPa, muya mupati uuzyibidwe ngu 5350mm, kupya kupati kwakubeleka ngu 1200℃, kupya kusyoonto kwakubeleka nku -196℃, mpawo nzila iibelesyegwa njakuti maanzi, busi, mafuta, muya uuzwa kuzilenge, zintu ziyumu zibola (mbuli nitric acid, sulphuric acid, azimwi).
Kobikkila maanu kukusala kwavalvu:
1. Mukucheesya bulongo buvwumbide mupayipi,vvalavu ya butterflykanjikanji ilasalwa kuti ibe aamupaipi mupati; bubi bupati bwa vvalavu ya butterfly mbwakuti bbwe lya butterfly litola busena bumwi bwamaanzi, mpawo eezi ziyungizya kusweekelwa mutwe;
2. Mavalvu aachiindi abikkilizyamavwili aabutterfly, mavalvu aamulyango, mavwili aamabbola amavwili aapulagi, azimwi. Mweelwe wamavwili abelesyegwa munzila yakupa maanzi weelede kulanga-langwa mukusala.
3. Kusofwaazya akubamba ma ball valve ama plug valve nchintu chiyumu alimwi chidula, mpawo kanjikanji chili kabotu kumapaipi masyoonto aali akati-akati. Ibbola lyabbola antoomwe apulagi valve zilabamba bubotu bwa single gate valve, kukasya maanzi masyoonto, kujala kusyomeka, kuchita zintu zichincha, kubelesya kabotu akubamba. Ipulagi valve ayalo ilijisi bubotu bukozyenye, pesi chibeela chiinda maanzi tachili muzyunguluko uulondokede pe.
4. Kuti kakutakwe mpindu mpati kubunji bwabulongo bwakuvwumba, ssola kusala vvalavu yamulyango; bulamfu bwa vvalavu yamulyango wamagesi mpati iimvwi nji ilajatikizya bulongo buvwumbide bulongo bwapaipi, mpawo bulamfu bwa vvalavu yamulyango mupati uulampa buyungizya busena bwamupaipi mpawo bulajatikizya bubambe bwamapaipi aambi;
5. Muminyaka misyoonto yainda, akaambo kakusumpuka kwabusongo bwakusowela, kubelesya musenga wa resin kulakonzya kutantamuka naa kucesya kubelesya minchina, aboobo kucesya mali, aboobo kukonzyeka kwama ball valve aabelesyegwa mumapaipi mapati kweelede kuvwuntauzyigwa. Kujatikizya munyinza wa bupati bwa caliber, weelede kulanga-langwa akuabwa kweendelanya abukkale bwini.
Chiindi chakutumizya: Nov-03-2022
