华夏棋牌

电磁流量计,磁翻板液位计
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  • 热式质量流量计在化工行业中的应用
    时间:2017-05-02 10:34:29   阅读数:

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    热式气体质量流量计华夏棋牌专用于单一组分的气体或固定比例的混合气体测量,目前已广泛应用于石油、化工、半导体、医疗仪器、生物工程、燃烧控制、配气、环境监测、精密仪器、科研、计量、食品、冶金、航天航空等领域。

    LIANGRESHIZHILIANGLIULIANGJIYONGYUJINGMICELIANGHEZIDONGKONGZHIQITIDEZHILIANGLIULIANG。CAIYONGBIAOZHUNSHURUSHUCHUXINHAO,KESHIXIANJISUANJIJIZHONGKONGZHI。ZAIDAQINGSHIHUAGONGSIJIUYOUDUOZHONGXINGSHIDEYINGYONG,BIRUJUBINGXIZHUANGZHIQINGQILIULIANGBIAOFT-121A/BCAIYONGDESHIBROOKSLIANGRELIULIANGJI,LIANGCHENGWEI1.45Kg/HHE9.5Kg/H。

    华夏棋牌YUCHUANTONGDELIULIANGJIXIANGBI,TABUXUPEIZHIWENDU、YALIBIANSONGQI,BUYONGJINXINGWENDU、YALIDEBUCHANGJIUNENGZHIJIECELIANGZHILIANGLIULIANG(ZAIBIAOZHUNZHUANGTAIXIA,0℃,101.325KPa)。

    华夏棋牌DANGQITIZUOWEISHENGCHANGUOCHENGZHONGDEKONGZHIBIANLIANGSHI(LIRURANSHAO、HUAXUEFANYING、TONGFENGPAIQI、CHANPINHONGGANDENG),SHIYONGZHILIANGLIULIANGKONGZHIQIZHIJIECELIANG,KEKONGZHIQITIDEKEFENZISHULIANG。

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    热式质量流量计还是管道系统、阀门类密封性检测的较好仪器,它直接显示漏气量。质量流量计性能价格比高,易于安装,操作简便,使用质量流量计和质量流量控制器产品是最合理的选择之一。

    YOUYUCILEIZHILIANGLIULIANGJIDECHUANGANQISHIRESHIYUANLI,RUGUOQITIBUSHIGANZAODEQITI,JIANGYINGXIANGCHUANREXIAOLV,CONGERYINGXIANGCHUANGANQIDESHUCHUXINHAOHECELIANGJINGDU。

    ER、JIBENYUANLI

    RESHIZHILIANGLIULIANGJIGENJUREYUANJICEWENFANGSHIDEBUTONGKEFENWEIJIECHUSHIHEFEIJIECHUSHILIANGZHONG。

    华夏棋牌1.JIECHUSHIRESHIZHILIANGLIULIANGJI

    这种质量流量计的加热元件和测温元件都置于被测流体的管道内,与流体直接接触,常被称为托马斯流量计,适于测量气体的较大质量流量. 其结构原理如图1所示。由于加热及测量元件与被测流体直接接触,因此元件易受流体腐蚀和磨损,影响仪表的测量灵敏度和使用寿命。测量高流速、有腐蚀性的流体时不宜选用,这是接触式的缺点。
     
    图1: 接触式热式质量流量计结构原理
    l、3—热电偶;2一加热器;4一功率表
    华夏棋牌 2.非接触式热式质量流量计

    这种流量计的加热及测温元件都置于流体管道外,与被测流体不直接接触,克服了接触式的缺点。热式微流量型(是非接触式质量流量计的典型结构)如图2所示。仪表的测量导管,为薄壁小口径镍管,镍管外部两侧缠绕铂电阻丝3、5作为测温线圈,并作为测量电桥的两臂R1、R2。两测温线圈的中间缠绕着锰铜丝加热线圈4,作为仪表的加热器。当流体静止时,由于测温线圈对称地安装在加热器两侧且阻值相等(各100 左右),因此测量电桥处于平衡状态。但当流体在镍管中流经测温电阻时,就破坏了加热器的温度场,两测温线圈处于不同的温度场内,因而引起电阻值发生变化。两测温线圈阻值不等,破坏了电桥的平衡。根据电桥平衡原理,由检流计8测得电阻值的变化, 即可求得质量流量M。
     
    非接触式热式质量流量计
    1—测量导管; 2—等温外壳; 3—测温线圈; 4—加热线圈
    7—调零电阻; 8—检流计
    华夏棋牌 热式微流量计适用于测量液体和气体的微小质量流量。可测0--100cm3/h的微小液体流量和l0L/h左右的微小气体流量。

    WEILESHIJIEGOUJIANHUA,YOUXIECHANPINQUXIAOLEJIAREQI,ZHIYONGLIANGZHICELIANGDIANZU,JIZUOJIAREYUANJIANYOUZUOWEICEWENYUANJIAN。ZHEIZHONGSHEJI,YOUYUREGUANXINGDEYUANYIN,YIBIAOFANYINGSUDUBIJIAOXIAO,LINGMINDUJIAODI; BEICELIUTIWENDUBIANHUAYINGXIANGYIBIAOZHISHIDEZHUNQUEDU。

    华夏棋牌WEILETIGAOFEIJIECHURESHIZHILIANGLIULIANGJIDELIULIANGCELIANGFANWEI,SHEJILEYIZHONGBIANJIECENGZHILIANGLIULIANGJI,TALIYONGCELIANGLIUTIKAOJINGUANBIDEBIANJIECENGDERECHUANDAOLAIFANYINGLIULIANGDEDAXIAO.YONGZHEIZHONGFANGSHICELIANGLIULIANG,YIBANSHILIYONGKONGZHIGUANWAIBIDEJIAREQIJICHUDERELIANGLAIBAOCHIBIANJIECENGNEIWAIWENCHAHENGDING,RANHOUGENJUREYUANCELIANGFANYINGCHUZHILIANGLIULIANG。

    RESHIZHILIANGLIULIANGJIMUQIANFAZHANJIAOKUAIDEYOU:REXIANZHILIANGLIULIANGJI、BIANJIECENGZHILIANGLIULIANGJI、FENLIUSHIREMAOXIGUANZHILIANGLIULIANGJIYIJIYONGICJIBANJISHUDERESHIZHILIANGLIULIANGJIDENG。

    SAN、 SHIJIYINGYONGYUWEIHU

    WOCHANGJUXITINGZHUANGZHIZHONGYINWEIKONGZHISHUZHIFENZILIANGXUYAODIAOJIEQINGQI、YANGQIDENGDEZHURULIANG,ERCAIYONGLE4TAIRESHIWEIZHILIANGLIULIANGJI。GENJURESHIWEIZHILIANGLIULIANGJIZHEIJINIANYUNXINGDESHIJIQINGKUANG,DUIQIKEKAOXING、JINGQUEDUZUORUXIAFENXI:

    (YI)KEKAOXING

    华夏棋牌1.PINGJUNGUZHANGJIANGESHIJIAN(MTBF)

    华夏棋牌CAIYONGPINGJUNGUZHANGJIANGESHIJIAN(MTBF)LAIHENGLIANGSHEBEIDEKEKAOXING。CICHUDEGUZHANGZHIYICHUXIANMINGXIANDEXIANSHICUOWU,CHAOCHUYIBIAODEJINGDUYAOQIU。YOUYUDANTAISHEBEIMEIYOUCHUXIANGUOLIANGCIGUZHANGXIANXIANG,ZHEILIKEYIBAZHENGTIJIADINGWEI1TAIYIBIAOZAI4BEIDESHIJIANLIYUNXING,CHUXIANGUOYICIGUZHANG。

    MTBF = 工作时间/故障次数
    =4×6×365×24 / 1
    ≈2.1×105(h)

    华夏棋牌2.PINGJUNXIUFUSHIJIAN(MTTR)

    YIWEIHAOFT-201AWEILIULIANGJIWEILI:YINWEICHUANGANQINEIBUJIANCEYUANJIANCHUXIANWENTI,FANHUICHANGJIAXIULI、BIAODING,LISHI2GEYUE。YOUCIKEZHI,RESHIWEIZHILIANGLIULIANGJIDEPINGJUNXIUFUSHIJIANSHOUWAIBUYINSUDEYINGXIANGBIJIAODA。

    (ER)JINGDU

    华夏棋牌SUOYOURESHIWEIZHILIANGLIULIANGJIZAIGONGZUOYIDUANSHIJIANHOUDECELIANGWUCHAZUOSHIJIDUIZHAO,LIULIANGCELIANGZHIYUBIAOZHUNBIAODINGDUSHUDEZUIDAWUCHAJUNBUDAYU1%,ZECONGSHIJIYIBIAOCELIANGZHIYUBIAODING、QINGKUANGKAN,TAYIMANZUSHENGCHANXUYAO。

    (SAN)SHEBEIWEIHU

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    GAILEISHEBEIANZHUANGJIUWEI,DIAOSHITOUYONGHOU,ZHIXUYAOJINXINGCHANGGUIDEYUNXINGJIANCHAHECHUCHENQINGJIE,WUXUTESHUWEIHU。

    SI、JIEYU

    热式质量流量计越来越多地应用于半导体工业外延扩散、石油化工微型反应装置、镀膜工艺、光导纤维制造、热处理淬火炉等各种场所的氢、氧、氨、燃气等流量测量和控制,以及固体气制冷中固体氩蒸发等累积量计量和阀门制造中的泄漏量测量等。在气体色谱仪和气体分析仪器等实验室仪器上,也得到了大量的应用,受到越来越多的专业人员的重视,具有广阔的发展前景。

  • 上一个:涡街流量计老准(找找原因)
  • 下一个:插入式热式流量计安装步骤
  • 电磁流量计-磁翻板液位计

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