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Kuinua valve ya kuangalia

Valve ya kuangalia ya kuinua ni kifaa cha kudhibiti mtiririko wa mtiririko ambao hufungua kiotomatiki na kufunga kupitia shinikizo la kati kuzuia kurudi nyuma, kutumika sana katika mifumo ya bomba la viwandani na la raia. Muundo wake wa msingi unajumuisha mwili wa valve, disc, kiti, na utaratibu wa kuongoza, inafanya kazi kwenye usawa kati ya shinikizo la maji na nguvu ya mvuto ya disc.
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Wakati vyombo vya habari vinapita mbele, shinikizo la maji linashinda mvuto wa diski, na kusukuma kwa wima juu kutoka kwenye uso wa kuziba wa kiti ili kufungua kifungu na upinzani mdogo. Mara tu mtiririko ukisimama au kurudi nyuma, disc inashuka kwenye kiti chini ya mvuto na kurudi nyuma, na kutengeneza muhuri mkali kuzuia mtiririko wa nyuma. Ubunifu huu inahakikisha eneo kubwa la mawasiliano ya kuziba kati ya diski na kiti, kuwezesha utendaji bora wa kuziba ambao unakidhi viwango vikali kama ANSI/FCI 70-2 Class VI kwa kuvuja kwa karibu.
Kwa uteuzi wa nyenzo, miili ya valve kawaida hufanywa kwa chuma cha kutupwa, chuma cha kutupwa, au chuma cha pua ili kuzoea shinikizo tofauti na hali ya joto. Diski na viti hutumia aloi ngumu, mpira, au PTFE kulingana na sifa za media ili kuongeza upinzani na upinzani wa kutu. Kwa mfano, katika matumizi ya petrochemical na vyombo vya habari vya kutu, mwili wa chuma-uliowekwa na uso wa kuziba wa PTFE inahakikisha upinzani wa shinikizo na ulinzi wa kutu. Katika mifumo ya usambazaji wa maji, valves za ukaguzi wa chuma-huonyesha kuegemea kiuchumi kwa mtiririko wa maji usio na usawa.
Ikilinganishwa na valves za kuangalia za swing, valves za ukaguzi wa kuinua hutoa kuziba bora lakini kwa upinzani wa mtiririko wa juu. Pia zinahitaji mwelekeo madhubuti wa usanidi -usanidi wa wima kwenye bomba za usawa au bomba la wima na mtiririko wa media wa juu -ili kuhakikisha diski inafanya kazi kawaida kupitia mvuto. Licha ya mapungufu haya, kuziba kwao bora na kuzuia kurudi nyuma kunawafanya kuwa chaguo linalopendekezwa kwa hali ya mahitaji ya hali ya juu kama vile bomba la mvuke, ulinzi wa pampu, na usambazaji wa maji ya ujenzi wa juu, unachukua jukumu muhimu katika kuhakikisha usalama wa mfumo na operesheni thabiti.
June 27, 2025
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