蒸汽流量計如何正確選型
    蒸汽流量計準確度很重要，其口徑選擇正確以及使流量計盡可能接近用戶的實際需要非常關鍵。
1)zhengqiliuliangjiliangyibiaojiliangbuzhengchang，zhuyaoshiyouyuxuanxingshiliangchengbuzhengquezaochengde。yongqiwangjiyongliangxiangdangda，eryongqidanjiyongliangyouhenxiao，yongliangxiangchaguoyuxuanshu，yibanzhengqiliuliangjiliangyibiaodeliuliangfanweijiunanyishiying。liru：在某個蒸汽流量計量點，最大流量為12 000 kg／h，流量計的選擇是根據所處理的最大流量。一般孔板流量計的量程比為3：1，即該流量計在12 000～ 4 000 kg／hneinengdadaoqisuobiaodexingneng。dangshijiliuliangdiyugaizhishi，liuliangjibunengdadaotadexingneng
，wuchakaishileiji。zuihaodeqingkuangshijiliangbuzaizhunque，zuichadeqingkuangshiliulianghui“丟失"，造成小流量漏計。
    yinci
，bixumingqueliuliangceliangfanwei，zaicijichushangxuanzefuhexiangguanyunxingcanshudezhengqiliuliangjiliangyibiao，xuanzeliangchengbizugoudadeliuliangjiyimanzuzhengqifuhedebianhua。congchangyuanlaikan，gaoliangchengbiliuliangjihenzhongyao，gaoliangchengbiliuliangjinengchuliliuliangzengjiahuojianshaodexuyao，wanquanxiaochucuowudushu。
2)guandaozhijingwenti。zaishejijieliuzhuangzhishi
，jibenshangdoucaiyonggongyitigongdegongchengmingyiguanjingzhi
，qishigongchengmingyiguanjingzhiyushijiguanjingzhiyoushishiyouchayide，congerzaochengjiliangwuchazengda。guobiaoguiding：用來計算節流件直徑比的管道直徑D值應為上遊取壓口的上遊0．5D長度範圍內的內徑平均值。設計前最好實測管徑
，以減少計量誤差。
蒸汽流量計正確安裝
    zhengqueanzhuangliuliangjishiquebaozhunquejiliangzhengqiliuliangdeguanjianzhiyi。youyuzhengqixitongbutongyuyibandeliutixitong，zhengqiliuliangjiyonghuzaianzhuangliuliangjishibixuzhuyiyixiajidian。
1)在所安裝流量計前後必須留有足夠長的直管段
，並作可靠的支撐和良好的疏水。
2)流量計不能安裝在整套管路的最低處。
3)bixugaoduzhongshilengningqideanzhuang。lianggelengningqibixuchuyuxiangtongshuipingweizhi。lianggelengningqidezuoyongshishiyinyaguanzhongbeicezhengqilengningbingshizhengfuyaguanzhonglengningyemianyouxiangtonggaodujibaochichangqiwending。weibushilengningyemianbodongduijiliangchanshengwucha
，lengningqideyouxiaorongjiyingdayusuoshiyongdechayabiansongqigongzuokongjiandezuidarongjibianhuade3倍
，在水平方向的橫截麵積不得小於差壓變送器的工作麵積，係統確保密封良好，嚴禁泄漏

；要充分考慮維護、拆換、吹掃便利。
4)引壓管長度最好在16 m內，內徑最好選用1O～16 mm，以防堵塞為好。引壓管全程保溫並確保正負管處於相同溫度以免溫度變化引起計量誤差。
5)安裝測溫元件地方最好在流量計下遊10D以外，在管道或正壓管上取壓時


，如壓力變送器安裝在流量計下方，則必須對壓力變送器的管路液柱值進行修正
，以提高計量準確度。