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蒸汽流量计准确计量的几点重要要素

文章出处:未知人气:发表时间:2017-12-19 15:07:21【

一、蒸汽流量计的密度补偿要科学准确

为了正确计量蒸汽的质量流量,必须考虑蒸汽压力和温度的变化,通过流量积算仪对蒸汽密度进行补偿。测量蒸汽温度的铂电阻一定要规范安装:测温铂热电阻插入管道中心位置、铂热电阻安装在流量计下游的5倍管径处、安装铂热电阻的管道位置采取保温措施等,确保测得的温度数值准确。在蒸汽压力的测量中一定要注意,如果采用引压管引压,必须进行零点迁移(因为引压管内冷凝水的重力作用会使压力变送器测量到的压力与实际压力之间出现一定的差值,引起密度补偿的误差),也可在流量积算仪内进行修正。压力变送器安装在蒸汽流量计红鹰彩票下游的4倍管径处,压力变送器前的阀门、密封垫应完好畅通,以保证蒸汽压力的准确测量。如果采用设定压力、温度进行补偿,所设定的数值应力求接近实际,否则误差很大,一般不建议采用。

  在流量积算仪中要正确设定蒸汽流量计的运行状态,这对蒸汽费用的正确计算至关重要。对于蒸汽状态不好明确判断的使用场合,建议采用智能型流量积算仪,配合铂电阻、压力变送器进行温度、压力补偿,这样所计量的蒸汽质量流量最准确。

  ER、ZHENGQILIULIANGJISHANGXIAYOUZHIGUANDUANDEZHENGQUEANZHUANG

  DUIYUCHUANTONGDE,QIQIANHOUANZHUANGZHIGUANDUANYAOQIUFENBIEWEI20BEIGUANJINGHE5BEIGUANJING(ZHEISHILIULIANGJIDEQIANMIANWUFAMENDENGZHANGAIWUDEJISHUYAOQIU;YOUZHANGAIWUHAIYAOZENGJIAZHIGUANDUAN,JUTIJIANCHANGJIADESHUOMINGSHU)。RUGUOSHANGXIAYOUZHIGUANDUANBUGOU,JIUHUIDAOZHIGUANDAONEIZHENGQILIUDONGWEICHONGFENFAZHAN,ZAILIUSUFENBUPOUMIANFASHENGJIBIAN。YONGHUKETONGGUOZAIZHENGQILIULIANGJIQIANANZHUANGLIUDONGDIAOZHENGQIHUOZENGJIAZHIGUANDUANLAIDIAOZHENGGUANDAODELIUSUFENBU,SHIZHENGQILIULIANGJICHUDELIUTIWEICHONGFENFAZHANZHUANGTAI。DUIYUYIXIEDAKOUJINGZHENGQILIULIANGJI,MANZUSHANGXIAYOUZHIGUANDUANDEANZHUANGYAOQIUGENGWEIZHONGYAO。

  三、蒸汽流量计的量程比要合理

  LIANGCHENGBISHIZHIYIGELIULIANGJIZAINENGQUEBAOJIDINGDEZHUNQUEDUFANWEINEI,SUONENGCELIANGDEZUIDALIULIANGHEZUIXIAOLIULIANGZHIBI。YONGHUYAOGENJUZIJIDESHIJISHIYONGLIANGXUANZELIULIANGJI,LILUNSHANGDAIXUANZHENGQILIULIANGJIDELIANGCHENGYAOWANQUANFUGAIYONGHUDESHIYONGLIANGCHENG。CHAOGUOLIULIANGSHANGXIANHEDIYULIULIANGXIAXIANSHIYONGDOUHUIZAOCHENGZHENGQILIULIANGJIJILIANGDEYANZHONGBUZHUN。BIRU:SHIJIPINGJUNLIULIANGWEI5t/hDEWOJIEZHENGQILIULIANGJI,YIBANYINGXUANZEKOUJINGWEI150mmDEWOJIELIULIANGJI,DANSHIDANGLIULIANGJIANGDIDAO0.3t/hHUOCHAOGUO15t/hSHI,LIULIANGJIJIUHUICHUXIANYANZHONGJILIANGSHIZHUN。

红鹰彩票   SI、XIANCHANGCUNZAIDEZHENDONGHEDIANCIGANRAOYINGBIMIAN

  ZHENGQIJILIANGZHONGYINGYONGZUIDUODEWOJIELIULIANGJISHOUSHEJIYUANLIDEYINGXIANG,DUIJIXIEZHENDONGBIJIAOMINGAN,JILIANGJIEGUOYISHOUZHENDONGGANRAO,YINGDUIZHENGQILIULIANGJIQIANHOUGUANDUANZUOKEKAODEZHICHENGSHEJI,JIAZHUANGZHENDONGHUANCHONGBUJIAN,RUGUANDAOZHENDONGBUKEBIMIAN,YINGXUANYONGKANGGANRAONENGLIXIANGDUIQIANGDEZHENGQILIULIANGJI(RUQITICHAOSHENGBOLIULIANGJI、ZHINENGSHIWOJIELIULIANGJI、CHAYASHILIULIANGJIDENG)。RUGUOZHENGQILIULIANGJIXIANCHANGCUNZAIZHENDONGGANRAO,JIUHUIDUIZAIYONGDEWOJIEZHENGQILIULIANGJICHANSHENGDIPINLVDEMAICHONGXINHAOYINGXIANG,ZHENGQILIULIANGJIJIUHUIJIANGZHEIXIEMAICHONGZUOWEILIULIANGXINHAOCHUANDIJILIULIANGJISUANYI,XINGCHENGLEIJILIULIANG,DAOZHIBUFENWOJIEZHENGQILIULIANGJIZAIYIDUANSHIJIANBUYONGZHENGQIDEQINGKUANGXIARENGRANHUIYOUYIDINGLIANGDESHUZHILEIJI。ZHEIJIUSHI“BUYONGQIERLIULIANGJIZOUZI”DEYUANYIN,YINCIZHENGQIYONGHUZAIBUYONGZHENGQIDEQINGKUANGXIA,YEYAOYUGONGQIDANWEIGONGTONGJIHAOBIAODI,FANGZHIZHENGQILIULIANGJI“KONGPAO”。

红鹰彩票   WU、DINGQIYIFAJIANDINGHENZHONGYAO

  《JILIANGFA》HEGB17167-2006《YONGNENGDANWEINENGYUANJILIANGQIJUPEIBEIHEGUANLITONGZE》ZHONGMINGQUESHUOMING:QIANGZHIJIANDINGDEJILIANGQIJUHENENGYUANJILIANGQIJUYINGDINGQIJIANDING,FANJINGJIANDINGBUFUHEYAOQIUDEJILIANGQIJUYILVBUZHUNSHIYONG。ZHENGQILIULIANGJIBIXUDINGQIJIANDING,ZHEISHIBAOZHENGZHENGQILIULIANGZHENGQUEJILIANGDEQIANTI。YINCI,GUANGDAYONGHUMEINIANDOUYAOJIANGSHIYONGDEZHENGQILIULIANGJIDENGSONGDAODANGDIFADINGJILIANGJISHUJIGOUJINXINGJILIANGJIANDING。RUGUOZHENGQILIULIANGJIJIANDINGHEGE,ERSHIJISHIYONGQUEGANJUE“JILIANGBUZHUN”,ZHEISHIYONGHUJIUYAOCONGYIBIAOSHIFOUZHENGQUEANZHUANG、XUANXING、YIBIAOYUNXINGZHUANGTAISHEZHI、WAIJIEGANRAO、ZHENGQIDESHIJIZHUANGTAISHIFOUYOUBIANHUADENGFANGMIANXUNZHAOJIEJUEWENTIDEFANGFA。

此文关键字:蒸汽,流量计,准确,计量,的,几点,重要,要素,一,

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