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小流量质量流量计

小流量质量流量计

简要描述:

XIAOLIULIANGZHILIANGLIULIANGJISHIYIGEJIAOWEIZHUNQUE、KUAISU、KEKAO、GAOXIAO、WENDING、LINGHUODELIULIANGCELIANGYIBIAO,ZAISHIYOUJIAGONG、HUAGONGDENGLINGYUJIANGDEDAOGENGJIAGUANGFANDEYINGYONG。

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一.小流量质量流量计测量原理

质量流量计是采用感热式测量,通过分体分子带走的分子质量多少从而来测量流量,因为是用感热式测量,所以不会因为气体温度、压力的变化从而影响到测量的结果 。质量流量计是一个较为准确、快速、可靠、高效、稳定、灵活的流量测量仪表,在石油加工、化工等领域将得到更加广泛的应用,相信将在推动流量测量上显示出巨大的潜力。质量流量计是不能控制流量的,它只能检测液体或者气体的质量流量,通过模拟电压、电流或者串行通讯输出流量值。但是,质量流量控制器,是可以检测同时又可以进行控制的仪表。质量流量控制器本身除了测量部分,还带有一个电磁或者压电阀,这样质量流量控制本身构成一个,用于控制流体的质量流量。质量流量控制器的设定值可以通过模拟电压、模拟电流,或者计算机、PLC提供。
 

二.小流量质量流量计技术指标

主要参数

ZHILIANGLIULIANGJINGDU: ±0.002×LIULIANG±LINGDIANPIAOYI

MIDUCELIANGJINGDU: ±0.003g/cm3

69棋牌MIDUCELIANGFANWEI: 0.5~1.5g/cm3

WENDUCELIANGJINGDU: ±1°C

传感器

HUANJINGWENDU: -40~60°C

JIEZHIWENDU: -50~200°C

FANGBAOLEIXING: iBⅡBT3

69棋牌GUANLIANSHEBEI: PEITAOBIANSONGQI

变送器

69棋牌GONGZUOWENDU: 0~60°C

XIANGDUISHIDU: 95%YIXIA

DIAN YUAN: 220±10%VAC,50HzHUO24±5%VDC,40W

硬件故障

RUOCHUXIANWUCHAPIANDA,JISUANQIXIANSHIBULIANGHUOBUZENGZHI,XIANSHIQIKONGBAIWEIDENGXIANXIANG,QIYUANYIN:

a.ANZHUANGBUGUIFAN,KEZHIJIEDAOZHILIULIANGJILINGPIAO,RUZHILIANGLIULIANGJIANZHUANGZAIBENGCHUKOUCHUJIAOJIN,CHUANGANQIZHICHENGQIANGDUBUGOU,LIANJIEFALANHANJIEBUDANGCHANSHENGYINGLIXINHAO,DIANLANSHOUDIANCIGANRAO。

b.JIEXIANWENTI

RUOCHUXIANXIANSHIQIBULIANGXIANXIANG,YINGJIANCHAJISUANQIDIANYUANLIANXIAN,RUOCHUXIANBAOXIANSIBEISHAO,YINGQUERENSHURUDIANYAYUBIAOZHUNDIANYABIAOCHENGZHI,JIAOZHILIUXINGSHISHIFOU*。YOURUOCHUXIANJISUANQIBUSUILIULIANGZENGJIASHI,YINGJIANCHAJISUANQIJIEXIAN,RUOJISUANQIZHUANGYOUZHENG/FANXIANGCHENGXU,YINGJIANCHALIULIANGJIJIEXIAN,YINLIULIANGJIJIEXIANBUZHENGQUE,HUISHIJISUANQIZAIFANXIANGLIUSHIBUDIZENG。

c.GONGYIJIEZHIBIANHUA

69棋牌RUOCELIANGJIEZHICHUXIANJIAQI,QIHUAHUOLIANGXIANGLIUDENGXIANXIANG,BIANSONGQIHUICHUXIANBAOJINGXIANSHI,YANZHONGSHI,CHUANGANQITINGZHIGONGZUO。

d.BIANSONGQISHIXIAO。

e.CHUANGANQISHIXIAO。

f.GUANDAOCHUISAOWENTI。

软件问题

69棋牌ZHILIANGLIULIANGJIGUZHANGCHULI——DUIYUGANGXIAOYANWANDELIULIANGJIANZHUANGSHIYONGQIANYIDINGYAOZHUYIZAIDANGQIANGONGKUANGXIADELINGDIANXIAOYAN,BIXUBAOZHENGLIULIANGJIZHONGCHONGMANJIEZHIHOUGUANBILIANGDUANJIEZHIFACAINENGLINGDIANBIAODING,JUTIDEFANGFAYOUHENDUOZHONG,MIANBANCAOZUO、SHOUCAOQIYIJISHIYONGⅡRUANJIAN。

a.LINGDIANXIAOZHUNYOUWU。

b.CANSHUSHEZHIYOUWU。

c.DIANYUANDEMAICHONGBODONG。

d.i/oZUTAIYOUWU(YIDINGYAOZHUYILIANGCHENG)。

e.操作有误
 

主要分类

ZHILIANGLIULIANGJIKEFENWEILIANGLEI:YILEISHIZHIJIESHI,JIZHIJIESHUCHUZHILIANGLIULIANG;LINGYILEIWEIJIANJIESHIHUOTUIDAOSHI,RUYINGYONGCHAOSHENGLIULIANGJIHEMIDUJIZUHE,DUITAMENDESHUCHUZAIJINXINGCHENGFAYUNSUANYIDECHUZHILIANGLIULIANG。

直接式

直接式质量流量计有多种类型,如量热式、角动量式、陀螺式和双叶轮式等。这种仪表适于测量小流量气体,缺点是惰性大,测量值与气体的定压比热有关,测量元件与介质接触,易被沾污和腐蚀。 为双孔板差压式质量流量计。在管道A、B处安装两个相同的孔板。在分流管道中装有两个相同的可产生方向相反的恒定体积流量q的定流量泵。两孔板前后压力差△P=P1-P3=4,与ρQ成正比。式中K为常系数,ρ为密度,Q为管道体积流量,ρQ69棋牌即为质量流量。双叶轮式质量流量计是在同一直线上前后安装两个倾角分别为x1和x2的叶轮,两叶轮之间利用扭簧连接,流体通过时,两叶轮之间产生一个偏移角x,那么两叶轮间力矩差△M与质量流量Qm,流速u,倾角x1,x2存在△M=Qm*u*(k1*tgx1-k2*tgx2)的关系(k1和k2为叶片结构尺寸常数),△M=k3*u*Qm,(k3=k1*tgx1-k2*tgx2).偏移角x=k4*△M=k4*k3*Qm*u;而叶轮组旋转速度U与流体的流速成正比,U=k6*u,则整个叶轮组转过两叶轮偏角x所需的时间△t=x/U=k7*Qm.通过专用计数器测量出△t便能得出质量流量Qm。

间接式

JIANJIESHIZHILIANGLIULIANGJIYOU 3ZHONGZHUYAOXINGSHI:SUDUSHILIULIANGJIYUMIDUJIDEZUHE,JIELIUSHI(HUOBASHI)LIULIANGJIYURONGJISHILIULIANGJIDEZUHE,JIELIUSHI(HUOBASHI)LIULIANGJIYUMIDUJIZUHE。

HAIYOUYIZHONGGENJULIUTIDEGONGZUOYALI、WENDUJIANGRONGJILIULIANGJIDECELIANGZHIHUANSUANCHENGBIAOZHUNZHUANGTAIXIADERONGJILIULIANG。DANSHI,DANGJIEZHIDEZHONGLEIHUOCHENGFENGAIBIANSHI,TABUNENGJICHUZHUNQUEDEZHILIANGLIULIANG。YANGESHUOLAI,TABUSHUYUZHILIANGLIULIANGJI。 SHUCHUMIDU、BIZHONG、TIJILIULIANG、ZHILIANGLIULIANG、ZHILIANGNENGLIANGLIULIANGDENG,JIANYOUZHISHI、MONILIANGSHUCHU、DAYIN、YUEXIANBAOJING、YIQIGUZHANGBAOJINGDENGDUOZHONGGONGNENG。

热式

69棋牌RESHIZHILIANGLIULIANGJIDEJIBENYUANLISHILIYONGWAIBUREYUANDUIGUANDAONEIDEBEICELIUTIJIARE,RENENGSUILIUTIYIQILIUDONG,TONGGUOCELIANGYINLIUTILIUDONGERZAOCHENGDERELIANG(WENDU)BIANHUALAIFANYINGCHULIUTIDEZHILIANGLIULIANG。

DANGLIUTICHENGFENQUEDINGSHI,LIUTIDEDINGYABIREWEIYIZHICHANGSHU。YINCIYOUSHANGSHIKEZHI,RUOBAOCHIJIAREGONGLVHENGDING,ZECECHUWENCHABIANKEQIUCHUZHILIANGLIULIANG;RUOCAIYONGHENGDINGWENCHAFA,JIBAOCHILIANGDIANWENCHABUBIAN,ZETONGGUOCELIANGJIAREDEGONGLVYEKEYIQIUCHUZHILIANGLIULIANG。YOUYUHENGDINGWENCHAFAJIAOWEIJIANDAN、YISHIXIAN,SUOYISHIJIYINGYONGJIAODUO。ZHEIZHONGLIULIANGJIDUOYONGYUJIAODAQITILIULIANGDECELIANG。

WEIBIMIANCEWENHEJIAREYUANJIANYINYUBEICELIUTIZHIJIEJIECHUERBEILIUTIDIANWUHEFUSHI,KECAIYONGFEIJIECHUSHICELIANGFANGFA,JIJIANGJIAREQIHECEWENYUANJIANANZHUANGZAIBOBIGUANWAIBU,ERLIUTIYOUBOBIGUANNEIBUTONGGUO。FEIJIECHUSHICELIANGFANGFA,SHIYONGYUXIAOKOUJINGGUANDAODEWEIXIAOLIULIANGCELIANG。DANGYONGYUDALIULIANGCELIANGSHI,KECAIYONGFENLIUDEFANGFA,JIJINCELIANGFENLIUBUFENLIULIANG,ZAIQIUDEZONGLIULIANG,YIKUODALIANGCHENGFANWEI。

差压式

69棋牌CHAYASHIZHILIANGLIULIANGJISHIYIMAGENUSIXIAOYINGWEIJICHUDELIULIANGJI,SHIJIYINGYONGZHONGLIYONGKONGBANHEDINGLIANGBENGZUHESHIXIANZHILIANGLIULIANGCELIANG。CHANGJIANDEYOUSHUANGKONGBANHESIKONGBANYUDINGLIANGBENGZUHELIANGZHONGJIEGOU。

SHUANGKONGBANJIEGOUXINGSHIRUTU6SUOSHI,ZAIZHUGUANDAOSHANGANZHUANGJIEGOUHECHICUNWANQUANXIANGTONGDELIANGGEKONGBANAHEB,ZAIFENLIUGUANDAOSHANGZHUANGZHILIANGGELIUXIANGXIANGFAN、LIULIANGGUDINGWEIDEDINGLIANGBENG,CHAYAJILIANJIEZAIKONGBANARUKOUHEKONGBANBCHUKOUCHU。

科里奥利

KELIAOLIZHILIANGLIULIANGJI(JIANCHENGKESHILILIULIANGJI)SHIYIZHONGLIYONGLIUTIZAIZHENDONGGUANZHONGLIUDONGERCHANSHENGYUZHILIANGLIULIANGCHENGZHENGBIDEKELIAOLILIDEYUANLILAIZHIJIECELIANGZHILIANGLIULIANGDEYIBIAO。

69棋牌KESHILILIULIANGJIJIEGOUYOUDUOZHONGXINGSHI,YIBANYOUZHENDONGGUANYUZHUANHUANQIZUCHENG。ZHENDONGGUAN(CELIANGGUANDAO)SHIMINGANQIJIAN,YOUUXING、ΩXING、HUANXING、ZHIGUANXINGJILUOXUANXINGDENGJIZHONGXINGZHUANG,YEYOUYONGSHUANGGUANDENGFANGSHI,DANJIBENYUANLIXIANGTONG。XIAMIANYIUXINGGUANSHIDEZHILIANGLIULIANGJIWEILIJIESHAO。

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