欧洲杯比分

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玻璃转子流量计的标定方法
发布时间:2019-08-11   点击次数:265次

对水表校验装置中玻璃转子流量计的标定方法
 

对水表校验装置中玻璃转子流量计的标定方法

欧洲杯比分      SHUIBIAOXIAOYANZHUANGZHIBOLIZHUANZILIULIANGJI(YIXIAJIANCHENGLIULIANGJI),ANJILIANGJIANDINGGUICHENGZHISHAOBIAODINGSANZHISIGELIULIANGDIAN,MEIBIAODINGYIGEHEGEDELIULIANGDIANYAOMOSUODUOCI,QIBIAODINGSHIJIANJIAOZHANG,JIJIANDINGRENYUANDAILAIKUNNAN,FEISHI、FEIGONG,WENZHONGDAOSUANDELIULIANGqvlYUhCHENGXIANXINGGUANXI,YOUXIAODIJIEJUELEZHEIYIWENTI,JIBIZHEZAISHIJIGONGZUOZHONGBIAODINGLIULIANGJIDAILAILEFANGBIAN。

LIULIANGJIDELIULIANGQUXIANFANGCHENGWEI:

(1)

式中:qv——流量计的流量(m3/h);
tgβ——玻璃管锥角正切;
h——流量点的转子上升高度(mm);
d——转子的zui大直径(mm)。

欧洲杯比分YILIULIANGJILZB-50XINGWEILI,QIZHUIJIAOZHENGQIEtgβ=0.0123。SHI(1)ZHONGtgβWEIERCIXIANGKEHULVE,WEIQUBIECICHUDEqvJIZUOqvl

(2)

JIANGSHI(1)YUSHI(2)XIANGBIJIAODE:

(3)

SHI(2)qvlYUhCHENGXIANXINGGUANXI,qvlWEITIJILIULIANGDEXIANGDUIZHENZHI,DANGZHUIGUANZHIJINGDENGYUZHUANZIDEzuiDAZHIJINGSHIQIGAODUWEI(R=r)0,qv、qvlJUNWEI0。

QUSUOBIAODINGDELIULIANGJIXINGHAO:LZB-50,BIANHAO:4356,JIEZHIWEISHUI,HUANJINGYUWENDUWEI(20±2)℃ ,300SHENGDEBIAOZHUNLIANGQI。XUANDINGLIULIANGJIDELIULIANGGAODUWEI200mm,TONGGUOHUANXIANGQIJIANGSHUILIURUBIAOZHUNLIANGQINEI,TONGSHIJISHIQIKAISHIJISHI。DANGSHUIZAIBIAOZHUNLIANGQINEIDADAO300LKEDUSHIGUANBILIULIANGFA,DUQUJISHISHIJIAN,FENBIEJINXINGSANCI,JISUANCHUQILIULIANGFENBIEWEI3.422、3.417、3.418(m3/h)

QUPINGJUNZHIqvl=3.419(m3/h)

欧洲杯比分YOUqvl、hQUEDINGQILIANGDIANDEZUOBIAO(0,0)、(3.419,200),QIUDEQIZHIXIANFANGCHENG:

qvl=0.01709h                                           (4)

欧洲杯比分YOUSHI(4)DAIRU(3)DE

qvl=0.01709h+4.2×10-6 h2                     (5)

为了把上式(5)用于实际工作,举一实例进行验证。按照对流量计的检定规程要求,以流量计欧洲杯比分LZB-50 编号3226为例,标定1、1.5、3.5、5 m3/h四个流量点,分别代入式(5)求出h1、h1.5、h3.5、h5的流量高度,分别为57.5、84.5、192.7、273.9(mm)。

欧洲杯比分YOUYISHANGSIDIANLIULIANGJIFUZIGAOhYONG100SHENG、300SHENG、1000SHENGDEBIAOZHUNLIANGQIZHONGFUSANCICEDE

 

FUZIDESHANGSHENGGAODUh

57.5

84.52

192.74

273.93

1

1.015

1.501

3.512

5.022

2

1.012

1.492

3.530

5.021

3

1.011

1.504

3.528

5.018

 

欧洲杯比分      QICELIANGXIANGDUIWUCHAXIAOYULIULIANGJIJIANDINGGUICHENGDEYAOQIUWUCHAYOUYU±2.5%。

江苏玺达仪表有限公司

江苏玺达仪表有限公司

欧洲杯比分GONGCHANGDIZHI:JIANGSUSHENGCHANGZHOUSHIXINBEIQUWEICUNZHENGONGYEYUANQUBINDELU8HAO

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