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涡轮流量计干扰问题的试验与解决办法


文章日期:2019-04-06|阅读数:


YI、YANJIUMUDE

为评估节流件干扰对流量计的影响,我们模拟各种现场安装条件,通过试验确认涡轮流量计设计要求,为更好选用涡轮流量计提供帮助。

ER、SHIYANFANGAN

1. QIANQIZHUNBEI:ZHUNBEISHIYANYANGJIHESHEBEI,DIAOSHISHIYANYONGQITILIULIANGBIAOZHUNZHUANGZHI,YUBEIGELEIJIELIUJIAN,RUBUTONGZHANGDUDEZHIGUANDUAN(0D、2D、10D、20D) 、WANTOU、SANTONG、BIANJING、FAMEN、GUOLVQIDENG。

2. 试验样机:DN80 气体涡轮流量计pk10赛车冠军单双计划,2 台,准确度等级 1.5 级,流量范围(8~160)m 3 /h。

pk10赛车冠军单双计划 3. SHIYANSHEBEI:BIAOZHUNBIAOFAQITILIULIANGBIAOZHUNZHUANGZHI;ZHUANGZHIBUQUEDINGDU U rel =0.3%(k=2) ,LIULIANGFANWEI:(5~4000)m 3 /h。

pk10赛车冠军单双计划 4. SHIYANFANGFA:LIYONGBIAOZHUNBIAOFAQITILIULIANGBIAOZHUNZHUANGZHIJINXINGCHUSHIJILIANGTEXINGCESHI,RANHOUJINXINGGELEIHOUXUGANRAOCESHI,LIULIANGDIAN q min 、0.2q max 、0.4q max 、0.7q max HE q max ,CESHICISHU 3 CI。

5. 试验依据:GB/T18940-2003《封闭管道中气体流量的测量 涡轮流量计》、GB/T28848-2012《智能气体流量计》、GB/T32201-2015《气体流量计》、JJG1037-2008《涡轮流量计检定规程》。

6.SHIYANXIANGMU:GENJUGB/T28848-2012FULUEYAOQIU,LIULIANGGANRAOSHIYANKEFENWEIQINGDUGANRAOYINGXIANGSHIYANHEYANZHONGGANRAOYINGXIANGSHIYAN,CESHILIULIANGDIANZENGJIAWEI 5 GEDIAN。

pk10赛车冠军单双计划 (1)QINGDUGANRAOYINGXIANGSHIYAN:BAOKUOQIANZHIGUANDUANBUZU、QIANHOUWANGUAN、SHOUSUOHEKUOZHANGGUANJINGZHILIANDENG。

(2)YANZHONGGANRAOYINGXIANGSHIYAN:BAOKUOGUOLVQI、DIAOYAQIHUOQITAJIELIUZHUANGZHIZHILIANBIAOJU、BANKAIFAMENDENG。

SAN、SHIYANGUOCHENG

pk10赛车冠军单双计划 1. CHUSHIJILIANGTEXINGCESHI

pk10赛车冠军单双计划 GENJU GB/T18940-2003 FULU E DEYAOQIU,YANGJIBIAOTIQUYA,ZAIBIAOZHUNBIAOFALIULIANGBIAOZHUNZHUANGZHISHANGXUANQU 5 GELIULIANGDIANDUIYANGJIJINXINGJIBENJILIANGTEXINGCESHI,MEIGELIULIANGDIANCESHI 3 CI,JILUYANGJIYALI、YIBIAOXISHU、SHIZHIWUCHAHEZHONGFUXING。

2. QINGDUGANRAOYINGXIANGSHIYAN

pk10赛车冠军单双计划 CHUSHIJILIANGTEXINGCESHIJIESHUHOU,ZAIXIANGTONGBIAOZHUNZHUANGZHISHANGJINXINGHOUXUGANRAOSHIYAN,SHIYANFANGFAYUCHUSHIJILIANGTEXINGCESHIWANQUANXIANGTONG,DANXUYAOFENBIESHEZHIGEZHONGGANRAOJIELIUJIAN。

(1)QIANZHIGUANDUANYINGXIANG:LIULIANGJIQIANLIANJIEBUTONGZHANGDUZHIGUANDUAN(0D、2D、10D、20D),ZAIXIANGTONGLIULIANGDIANSHANGJINXINGCESHI,JILUYANGJIYALI、YIBIAOXISHU、SHIZHIWUCHAHEZHONGFUXING。

(2)QIANHOUWANGUANYINGXIANG:FENBIEZAILIULIANGJIQIANDUAN、HOUDUAN、QIANHOUDUANLIANJIETONGGUANJINGWANGUAN(PINGMIANWANTOU、LITIWANTOU、SANTONG),ZAIXIANGTONGLIULIANGDIANSHANGJINXINGCESHI,JILUYANGJIYALI、YIBIAOXISHU、SHIZHIWUCHAHEZHONGFUXING。

(3)QIANHOUBIANJINGYINGXIANG:FENBIEZAILIULIANGJIQIANDUAN、HOUDUAN、QIANHOUDUANLIANJIEBIANJING(SUOJING、KUOJING),ZAIXIANGTONGLIULIANGDIANSHANGJINXINGCESHI,JILUYANGJIYALI、YIBIAOXITONG、SHIZHIWUCHAHEZHONGFUXING。

3.YANZHONGGANRAOYINGXIANGSHIYAN

(1)GUOLVQIYINGXIANG:LIULIANGJIQIANZHIJIEANZHUANGGUOLVQI,ZAIXIANGTONGLIULIANGDIANSHANGJINXINGCESHI,JILUYANGJIYALI、YIBIAOXISHU、SHIZHIWUCHAHEZHONGFUXING。

(2)BANKAIFAMENYINGXIANG:LIULIANGJIQIANZHIJIEANZHUANGFAMEN,BANKAIFAMEN,ZAIXIANGTONGLIULIANGDIANSHANGJINXINGCESHI,JILUYANGJIYALI、YIBIAOXISHU、SHIZHIWUCHAHEZHONGFUXING。

SI、SHUJUFENXI

GB/T32201-2015 之 5.13.3 规定,对于准确度易受流体扰动影响的流量计,由流体扰动引起的误差变化不应超过***大允许误差的三分之一,如果此类流量计对安装管段有要求,以改善流体扰动影20190322100501.jpg涡轮流量计干扰影响试验仪表系数特性曲线响,流量计上应有相应的标识,且流量计只能安装在经实验验证准确度等级能满足计量性能要求的管段中。

 

对于准确度等级受流体扰动影响的流量计,应按 GB/T32201-2015 之附录 C的规定进行试验,根据实际情况,我们把半开阀门和前端直连过滤器视企业微信截图_20190322100501.jpg涡轮流量计干扰影响试验仪表系数特性曲线为严重流体扰动,其他视为轻微流体扰动。鉴于涡轮流量计口径较多,且属于相似设计,故试验表选用常规的 DN80G100 规格涡轮流量计,其他规格根据需要再进行试验。

JIANDINGGUOCHENGZHONGSHUJUCHULICAIYONG JJG1037-2008 JINXING。

1.SHIZHIWUCHA

SHIYANYIBIAO DN80G100 WOLUNLIULIANGJI,YIBIAOBIANHAO131222006。JIANDINGJIEGUORUBIAO 1HETU1 SUOSHI。

2. YIBIAOXISHU

pk10赛车冠军单双计划 SHIYANYIBIAO DN80G100 WOLUNLIULIANGJI,YIBIAOBIANHAO131222006。JIANDINGJIEGUORUBIAO 2 HETU 2 SUOSHI。ANZHAO GB/T32201-2015 DEYAOQIU,BENSHIYANBIAOZAIQINGWEIRAODONGYINGXIANGSHIYANZHONG,ZHIGUANDUANYINGXIANGBUCUNZAI,SHIZHIWUCHABIANHUALIANGJUNWEICHAOGUO 0.5%,FUHEYAOQIU。WANTOU、SANTONG、KUOGUANDUIXIAOLIULIANGDEYINGXIANGCHAOGUO 1.0%,BUFUHEYAOQIU。ZAIYANZHONGGANRAOSHIYANZHONG,BANKAIFAMENYINGXIANG***DA,MEIGELIULIANGDIANDEYINGXIANGLIANGJUNCHAOGUOBIAOZHUNYAOQIU。

3.SHIZHIWUCHA

SHIYANYIBIAO DN80G100 WOLUNLIULIANGJI,YIBIAOBIANHAO131222028。JIANDINGJIEGUORUBIAO 3 HETU 3 SUOSHI。

4. YIBIAOXISHU

试验仪表 DN80G100 涡轮流量计,仪表编号涡轮流量计干扰影响试验示值误差曲线涡轮流量计干扰影响试验示值误差曲线20190322100548涡轮流量计干扰影响试验仪表系数特性曲线pk10赛车冠军单双计划131222028。检定结果如表 4 和图 4 所示。

KEYIKANCHU,BENSHIYANBIAOZAIQINGWEIRAODONGYINGXIANGSHIYANZHONG,ZHIGUANDUANYINGXIANGBUCUNZAI,SHIZHIWUCHABIANHUALIANGJUNWEICHAOGUO 0.5%,FUHEYAOQIU。BUFENWANTOU、SUOGUANDUIXIAOLIULIANGDEYINGXIANGCHAOGUO1.0%,BUFUHEYAOQIU。

ZAIYANZHONGGANRAOSHIYANZHONG,BANKAIFAMENYINGXIANG***DA,MEIGELIULIANGDIANDEYINGXIANGLIANGJUNCHAOGUOBIAOZHUNYAOQIU。

WU、SHIYANJIELUN

pk10赛车冠军单双计划 GENJUSHIYANJIEGUOKEYIKANCHU,WOLUNLIULIANGJIDUIYUQINGWEIRAODONGCUNZAIBUFENYINGXIANG,DUIYUYANZHONGGANRAOZHONGDEBANKAIFAMENYINGXIANG***DA,QIESHUYUFUPIANCHA,BUFUHEBIAOZHUNYAOQIU。MUQIANDADUOSHUWOLUNLIULIANGJISHEJIBIAOQIANZHENGLIUQI,DUIYUSHANGYOUZHIGUANDUANYAOQIUKEYIDADAJIANGDI,ANZHAOSHIYONGSHUOMINGSHUYAOQIUDEQIAN 2DN,HOU1DN JIKEMANZUYAOQIU,DANDUIYUQITAQINGWEIRAODONGJIELIUJIANZECUNZAISUIJIXINGYINGXIANG。YINCI,ZAIYIBIAOXUANYONGSHEJISHI,HAISHIYAOBIMIANZUHEJIELIUJIANCHANSHENGDEYINGXIANG,WEICIKENENGXUYAOSHIDANGYANZHANGZHIGUANDUANZHANGDU;DUIYUFAMENHEGUOLVQI,JIANYISHANGYOUANZHUANGSHIYUANLILIULIANGJI,ZHISHAO10DN YISHANG,FAMEN***HAOANZHUANGZAILIULIANGJIXIAYOU。

鉴于试验表数量较少,建议增加试验仪表数量和品种,如增加超声波流量计、腰轮流量计pk10赛车冠军单双计划等。试验节流件需要按照标准要求进行加工制作,使试验更加充分,数据更加翔实,结果更加具有说服力,借鉴意义更强。


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