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地址:pk10赛车冠军单双计划 江苏华云仪表有限公司

涡轮流量计等仪表现场使用中的度问题详解


文章日期:2018-12-11|阅读数:


ZHAIYAO:JINNIANLAI, SUIZHEWOGUOSHEHUIJINGJIDEFEISUFAZHANHEGONGYEHUAJINCHENGDEBUDUANJIAKUAI, GONGYEZIDONGHUAYIBIAO, YOUQISHILIULIANGYIBIAOYEYIZAIGONGYESHENGCHANZHONGDEGEGEBUMENZHONGDEDAOLEGUANGFANDEYINGYONG, DUIGUOMINJINGJIDEFAZHANJUYOUJUDADETUIDONGZUOYONG。DANSUIZHEGONGYESHENGCHANGUOCHENGZHONGBUDUANSHIYONG, ZHEIXIELIULIANGYIBIAODEDUJIUHUIZHUJIANXIAJIANG, YANZHONGYINGXIANGZHENGCHANGDEGONGYESHENGCHANJINCHENG。BENWENJIANGYIJIZHONGCHANGJIANDELIULIANGYIBIAOWEILI, DUIZAOCHENGQIDUXIAJIANGDEYUANYINJINXINGFENXI, BINGZAICIJICHUSHANGTICHUYIXIESHIYONGZHONGDEZHUYISHIXIANG。

  流量仪表 (英文:flowmeter) 又常被称作流量计, 目前我们常用的流量仪表主要有电磁流量计涡街流量计浮子流量计、超声波流量计以及涡轮流量计等。流量仪表主要应用于工业生产、能源计量、生物技术以及海洋气象等领域, 对国民经济的发展起到了举足轻重的作用。

涡轮流量计等仪表现场使用中的度问题详解

1、正确安装并使用的初期造成流量仪表度下降的原因分析:

  YIBANERYAN, LIULIANGYIBIAODECHUCHANGDUDOUSHIZAIBIAOZHUNGONGZUOTIAOJIANXIADECHUDE, ERSHIJISHIYONGSHIDETIAOJIANWANGWANGYUBIAOZHUNGONGZUOTIAOJIANYOUHENDADECHAJU。ZAISHIJISHIYONGGUOCHENGZHONG, LIULIANGYIBIAODECHUANGANQIHUIJINGCHANGYULIUTIJIEZHIXIANGHUJIECHU, YOUYUSHOULIUTIDEFUSHI、ZHANFU、MOSUNYIJIQIYADENGYINSUDEYINGXIANG, QIDUJIUHUIBUKEBIMIANDIFASHENGBIANHUASHENZHISHIXIAO。

1.1、电磁流量计:

pk10赛车冠军单双计划   DIANCILIULIANGJIDEGONGZUOYUANLISHIGENJUFALADIDIANCIGANYINGDINGLI, YOUYUCHUANGANQIDEGUANDAOLIUTONGMIANJIHUIDUICELIANGZHICHANSHENGYINGXIANG, YINCI, DANGLIUTIJIEZHIDEYALIWENDUBUTONGYUBIAOZHUNGONGZUOTIAOJIANSHI, YINLIUTONGMIANJIDEBUTONGERZAOCHENGYIBIAODUSHUDEGAIBIANKEYIJISUANCHULAI, FOUZEYAOCHANSHENGYIDINGDEWUCHA。SHIJIANZHONGWOMENKEYIKANDAO, ZHEIZHONGYIBIAODUIZHIGUANDUANDEYAOQIUBIJIAODI, SHIYONGZHEZHIXUANZHAOCHANPINSHUOMINGSHUSHIYONGJIKE。YIBANERYAN, ZHEIZHONGYIBIAOSUOCELIANGDEDADUOSHIGONGZUOZHUANGTAIXIADETIJILIULIANG, RUGUOXUYAOCELIANGBIAOZHUNZHUANGTAIXIADETIJILIULIANG, ZEXUYAOJINXINGMIDUBUCHANG。

1.2、容积式流量计:

  RONGJISHILIULIANGJIZAISHIJIGONGZUOGUOCHENGZHONGSUOYINQIDEWUCHA, ZHUYAOSHIYOUYULIUTIJIEZHIDEWENDUHEYALIDUIJILIANGQIANGTIJICHANSHENGDEYINGXIANGERYINQI。DANGZHIDAOJILIANGQIANGTIDECAIZHIHOU, JIUNENGGOUJISUANCHUQITIJIDEBIANHUA, JINERKEYIGENJUSHIJIXUYAODUIXIANSHIYIBIAODEDUSHUJINXINGXIUZHENG。CONGSHIJIANLAIKAN, YOUYULIUTIDEZHANDUDUILIULIANGYIBIAODEDUSHUYEHUICHANSHENGYINGXIANG, YINCIYAOGENJULIULIANGYIBIAODESHUOMINGSHUJINXINGQUANMIANDEKAOLV。YIBANERYAN, ZHIGUANDUANDEZHANGDUBUHUIDUILIULIANGYIBIAODEDUCHANSHENGYINGXIANG, ZHEISHIGAILEILIULIANGYIBIAO***WEITUCHUDEYOUSHI。CHUANTONGDERONGJISHIYIBIAOSHANGXIANSHIDESHILIUTIZAIGONGZUOZHUANGTAIXIADETIJILIULIANG, ERXIANZAIDEXINXINGLIULIANGJIDADUODOUSHIYONGLEZHINENGXINGDEXIANSHIYIBIAO, BINGDUIQIMIDUJINXINGLEZIDONGBUCHANG。

1.3、涡轮流量计:

pk10赛车冠军单双计划   YIBANERYAN, WOLUNLIULIANGJIDUISHIJIXIANCHANGDETIAOJIANYAOQIUBIJIAOGAO, SHIYONGZHEZHIYOUJINKENENGDIMANZUQIYAOQIU, CAINENGBAOZHENGTADECHUCHANGDU。DANGLIUTIJIEZHIDEWENDUHEYALIYUBIAOZHUNGONGZUOTIAOJIANXIANGCHASHENYUANSHI, KEYIGENJUCHUANGANQIDECAIZHIYUWENDU、YALIJISUANCHUCHUANGANQIQIAOTIDETIJIBIANHUA, JINERDUIYIBIAODEDUSHUJINXINGXIUZHENG。DANGLIUTIJIEZHIGONGZUOZHUANGTAIXIADEZHANDUHEBIAOZHUNLIUTIDEZHANDUCHAJUBIJIAODASHI, YINGDANGGENJUYIBIAOSHENGCHANCHANGTIGONGDEZHANDUXIUZHENGQUXIANTUJIAYIXIUZHENG。CONGSHIJIANLAIKAN, WOLUNLIULIANGJIDUIQISHANG、XIAYOUZHIGUANDUANDEZHANGDUDOUYOUYIDINGYAOQIU。GAILEIYIBIAOSHANGXIANSHIDESHIJIEZHIGONGZUOTIAOJIANXIADETIJILIULIANG, RUGUOXIANGZHIDAOBIAOZHUNTIJILIULIANGHUOZHEZHILIANGLIULIANG, RENGXUJINXINGMIDUBUCHANG。YOUYUWOLUNLIULIANGJIDECELIANGDUBIJIAOGAO, YINCICHANGBEIYONGZUOBIAOZHUNBIAODUIGONGZUOYIBIAOJINXINGBIAODING。

2、使用一段时间后, 流量仪表度的变化及处理建议:

  TONGCHANGQINGKUANGXIA, LIULIANGYIBIAODESHIJIGONGZUOHUANJINGDOUBIJIAOCHA, SHIYONGYIDUANSHIJIANHOU, QIDUYIBANDOUHUICHUXIANBUTONGCHENGDUDEXIAJIANG, YIXIAZHENDUIBUTONGLEIXINGDELIULIANGYIBIAOFENBIEJINXINGSHUOMING。

2.1、电磁流量计:

  电磁流量计通常是由传感器和转换器构成的, 一般情况下其工作可靠性较强。但经过长期的使用后, 其度也会下降甚至失去功效。一般而言, 如果仪表所显示的数值与流体物料的平衡规律明显不相符或者根本没有显示数值时, 可以先将传感器与转换器断开, 单独用“自校”功能对转换器进行检查, 若发现问题, 可以采用“换印刷板”的方法对其逐一排查, 或者干脆换一新的转换器, 以保持其正常工作。经过上述检查后, 如果确定不是转换器出现的故障, 则就要检查传感器。
  由于流量计长时间工作在高温、高压力的环境下, 或者安装时对测量管造成了较大的机械应力, 使测量管的衬里遭到严重的损坏, 进而导致电极绝缘层破坏或励磁线圈绝缘层破坏, 仪表显示的数值误差增大或者根本不显示数值。在这样的情况下, 就必须将传感器拆下来并对其进行彻底的修理。

2.2、容积式流量计与涡轮流量计:

pk10赛车冠军单双计划   CONGCHANSHENGLIULIANGYIBIAOBIANHUADEYUANYINLAIKAN, RONGJISHILIULIANGJIYUWOLUNLIULIANGJIJIBENSHANGXIANGTONG。CONGSHIJIANLAIKAN, JIEZHIZHONGYIBANDOUYOUZAZHI, BINGQIEDUIZHOUCHENGHEZHOUYAOCHANSHENGYANZHONGDEMOSUN, ZAZHIJINRUZHOUCHENGYUZHOUYAOZHIJIANDEKONGXIZHONGHUIYINGXIANGQIZHUANSU, CONGERZAOCHENGYIBIAOXIANSHIDESHUZHICHUXIANWUCHA;TONGSHI, DANGLIUTIDEWENDUHEYALIFASHENGBIANHUASHI, HUISHIGUANDAONEIDEYETIYICHUQISUOHANDEKONGQIHUOZHEYINGUANDAONEIDEYALIDIYULIUTIDEBAOHEZHENGQIYAERSHIBUFENYETIBIANCHENGZHENGQI, YEKENENGYINWEIJIEZHIDEFUYASHIWAIMIANDEQITIBEIXIRUDAOGUANDAONEI, DANBUGUANSHENMEYUANYINCHANSHENGDEQITI, ZHIYAOSUIZHEBEICEYETIJINXINGLIUDONG, JIUHUIZAOCHENGYIBIAODEZHISHISHUZHIZENGDA, CONGERCHUXIANWUCHA。

  针对以上问题, 笔者认为:在流量仪表安装的初期, 首先在流量仪表的上游和下游各两倍管径的管壁上安装一对测压口, 必要时可以与差压计相连接。在正常工作时, 记下流量仪表指示的数值与差压计所指示的数值之间的对比关系, 如果正常, 则可以将这个对比关系当作以后再次检查流量仪表工作状态的依据。例如, 通过定期对该对比关系进行测量, 如果发现在同样的差压计指示值下流量仪表所指示的数值偏小, 则基本上可以确定是流量仪表出现了故障。当检查流量仪表的传感器时, 可以先对发信器进行检查。
  将发信器单独取下, 先对其输入一个已知的信号, 再对照其输出值, 通过对比即可找到问题所在。如果故障无法在短时间内予以排除, 为了保证流量仪表的正常使用, 可以换上一个新的。如果传感器没有出现故障, 则就要将流量仪表从流程管线上卸下来, 对其进行仔细的检查。如果流量仪表不可避免地要安装在杂质比较多的流体或有可能产生气体的液体中时, 可以在其上游安装一个过滤器或者消气器, 同时还要加强日常的检测和维护, 定期清理这些设备中的污垢和废气, 以确保流量仪表的正常使用。

结束语:

  ZONGERYANZHI, YINGXIANGLIULIANGYIBIAODUDEYUANYINHENDUO, WOMENZHIYOUCONGSHIJICHUFA, CHONGFENFAHUIZISHENDEZHUGUANNENGDONGXING, JIJITANSUOCHUANGXINHEWEIHUFANGFA, CAINENGBAOZHENGLIULIANGYIBIAODEZHENGCHANGYUNXING。



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