蒸汽選用減壓閥的理由是什麼?6點來說明

蒸汽從鍋爐中由高壓輸出再輸送至各設備用汽點時，一般常會進行減壓閥控製。蒸汽為何需要閥門減壓?鍋guo爐lu通tong常chang產chan生sheng的de都dou是shi高gao壓ya蒸zheng汽qi

，這zhe樣yang可ke以yi減jian小xiao鍋guo爐lu尺chi寸cun
，減jian少shao濕shi蒸zheng汽qi的de發fa生sheng
，提ti高gao蒸zheng汽qi幹gan度du，進jin行xing遠yuan距ju離li輸shu送song。由you蒸zheng汽qi的de密mi度du變bian化hua造zao成cheng的de
，高gao壓ya時shi蒸zheng汽qi密mi度du大da，同tong口kou徑jing管guan路lu可ke以yi輸shu送song高gao壓ya蒸zheng汽qi要yao大da於yu低di壓ya蒸zheng汽qi，采cai用yong高gao壓ya輸shu汽qi會hui減jian小xiao管guan路lu尺chi寸cun，節jie約yue成cheng本ben。蒸zheng汽qi使shi用yong時shi會hui出chu現xian冷leng凝ning現xian象xiang

，減jian壓ya後hou的de蒸zheng汽qi降jiang低di冷leng凝ning水shui的de壓ya力li，避bi免mian冷leng凝ning水shui排pai放fang時shi產chan生sheng閃shan蒸zheng蒸zheng汽qi造zao成cheng損sun失shi，冷leng凝ning水shui在zai低di壓ya下xia排pai放fang能neng量liang損sun失shi較jiao小xiao。4、youyubaohezhengqidewenduheyalishiduiyingde，zaishajungongyihezaozhiganzaojibiaomianwendukongzhidouhuianzhuangjianyafalaikongzhiyali
，congerkongzhigongyishebeidewendu。gongyishebeidouyouzijideshejiyali，danggongyingdezhengqiyalichaoguolegongyixitongdexuqiushijiuxuyaojianya，dangyoudexitongshiyonggaoyalengningshuichanshengdiyashanzhengzhengqi，dadaojienengmude。dangchanshengdeshanzhengzhengqibuzushi，jiuxuyaotongguojianyafalaichanshengdiyazhengqibuchong。keyijianshaoguoludezhengqifuhe
，yinweizaidiyaxiazhengqiderehanjiaogao。2.5MPa時熱焓值為1839kJ/kg
，1.0MPa時熱焓值為2014kJ/kg。因此
，低壓蒸汽更適合於設備使用。