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渦輪流量計干擾問題的試驗與解決辦法


文章日期:2019-04-06|閱讀數:


YI、YANJIUMUDE

為評估節流件干擾對流量計的影響,我們模擬各種現場安裝條件,通過試驗確認渦輪流量計設計要求,為更好選用渦輪流量計提供幫助。

ER、SHIYANFANGAN

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

2. 試驗樣機:DN80 氣體渦輪流量計,2 臺,準確度等級 1.5 級,流量范圍(8~160)m 3 /h。

幸运飞艇注册开户网址 3. SHIYANSHEBEI:BIAOZHUNBIAOFAQITILIULIANGBIAOZHUNZHUANGZHI;ZHUANGZHIBUQUEDINGDU U rel =0.3%(k=2) ,LIULIANGFANWEI:(5~4000)m 3 /h。

4. SHIYANFANGFA:LIYONGBIAOZHUNBIAOFAQITILIULIANGBIAOZHUNZHUANGZHIJINXINGCHUSHIJILIANGTEXINGCESHI,RANHOUJINXINGGELEIHOUXUGANRAOCESHI,LIULIANGDIAN q min 、0.2q max 、0.4q max 、0.7q max HE q max ,CESHICISHU 3 CI。

5. 試驗依據:GB/T18940-2003《封閉管道中氣體流量的測量 渦輪流量計》、GB/T28848-2012《智能氣體流量計》、GB/T32201-2015《氣體流量計》、JJG1037-2008《渦輪流量計檢定規程》。

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

幸运飞艇注册开户网址 (1)QINGDUGANRAOYINGXIANGSHIYAN:BAOKUOQIANZHIGUANDUANBUZU、QIANHOUWANGUAN、SHOUSUOHEKUOZHANGGUANJINGZHILIANDENG。

(2)YANZHONGGANRAOYINGXIANGSHIYAN:BAOKUOGUOLVQI、DIAOYAQIHUOQITAJIELIUZHUANGZHIZHILIANBIAOJU、BANKAIFAMENDENG。

SAN、SHIYANGUOCHENG

1. CHUSHIJILIANGTEXINGCESHI

GENJU GB/T18940-2003 FULU E DEYAOQIU,YANGJIBIAOTIQUYA,ZAIBIAOZHUNBIAOFALIULIANGBIAOZHUNZHUANGZHISHANGXUANQU 5 GELIULIANGDIANDUIYANGJIJINXINGJIBENJILIANGTEXINGCESHI,MEIGELIULIANGDIANCESHI 3 CI,JILUYANGJIYALI、YIBIAOXISHU、SHIZHIWUCHAHEZHONGFUXING。

2. QINGDUGANRAOYINGXIANGSHIYAN

CHUSHIJILIANGTEXINGCESHIJIESHUHOU,ZAIXIANGTONGBIAOZHUNZHUANGZHISHANGJINXINGHOUXUGANRAOSHIYAN,SHIYANFANGFAYUCHUSHIJILIANGTEXINGCESHIWANQUANXIANGTONG,DANXUYAOFENBIESHEZHIGEZHONGGANRAOJIELIUJIAN。

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

幸运飞艇注册开户网址 (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 規定,對于準確度易受流體擾動影響的流量計,由流體擾動引起的誤差變化不應超過***大允許誤差的三分之一,如果此類流量計對安裝管段有要求,以改善流體擾動影20190322100501.jpg渦輪流量計干擾影響試驗儀表系數特性曲線幸运飞艇注册开户网址響,流量計上應有相應的標識,且流量計只能安裝在經實驗驗證準確度等級能滿足計量性能要求的管段中。

 

對于準確度等級受流體擾動影響的流量計,應按 GB/T32201-2015 之附錄 C的規定進行試驗,根據實際情況,我們把半開閥門和前端直連過濾器視企業微信截圖_20190322100501.jpg渦輪流量計干擾影響試驗儀表系數特性曲線幸运飞艇注册开户网址為嚴重流體擾動,其他視為輕微流體擾動。鑒于渦輪流量計口徑較多,且屬于相似設計,故試驗表選用常規的 DN80G100 規格渦輪流量計,其他規格根據需要再進行試驗。

JIANDINGGUOCHENGZHONGSHUJUCHULICAIYONG JJG1037-2008 JINXING。

1.SHIZHIWUCHA

幸运飞艇注册开户网址 SHIYANYIBIAO DN80G100 WOLUNLIULIANGJI,YIBIAOBIANHAO131222006。JIANDINGJIEGUORUBIAO 1HETU1 SUOSHI。

2. YIBIAOXISHU

幸运飞艇注册开户网址 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

試驗儀表 DN80G100 渦輪流量計,儀表編號渦輪流量計干擾影響試驗示值誤差曲線渦輪流量計干擾影響試驗示值誤差曲線20190322100548渦輪流量計干擾影響試驗儀表系數特性曲線131222028。檢定結果如表 4 和圖 4 所示。

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

ZAIYANZHONGGANRAOSHIYANZHONG,BANKAIFAMENYINGXIANG***DA,MEIGELIULIANGDIANDEYINGXIANGLIANGJUNCHAOGUOBIAOZHUNYAOQIU。

WU、SHIYANJIELUN

幸运飞艇注册开户网址 GENJUSHIYANJIEGUOKEYIKANCHU,WOLUNLIULIANGJIDUIYUQINGWEIRAODONGCUNZAIBUFENYINGXIANG,DUIYUYANZHONGGANRAOZHONGDEBANKAIFAMENYINGXIANG***DA,QIESHUYUFUPIANCHA,BUFUHEBIAOZHUNYAOQIU。MUQIANDADUOSHUWOLUNLIULIANGJISHEJIBIAOQIANZHENGLIUQI,DUIYUSHANGYOUZHIGUANDUANYAOQIUKEYIDADAJIANGDI,ANZHAOSHIYONGSHUOMINGSHUYAOQIUDEQIAN 2DN,HOU1DN JIKEMANZUYAOQIU,DANDUIYUQITAQINGWEIRAODONGJIELIUJIANZECUNZAISUIJIXINGYINGXIANG。YINCI,ZAIYIBIAOXUANYONGSHEJISHI,HUANSHIYAOBIMIANZUHEJIELIUJIANCHANSHENGDEYINGXIANG,WEICIKENENGXUYAOSHIDANGYANCHANGZHIGUANDUANCHANGDU;DUIYUFAMENHEGUOLVQI,JIANYISHANGYOUANZHUANGSHIYUANLILIULIANGJI,ZHISHAO10DN YISHANG,FAMEN***HAOANZHUANGZAILIULIANGJIXIAYOU。

鑒于試驗表數量較少,建議增加試驗儀表數量和品種,如增加超聲波流量計、腰輪流量計等。試驗節流件需要按照標準要求進行加工制作,使試驗更加充分,數據更加翔實,結果更加具有說服力,借鑒意義更強。


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