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渦輪流量計高粘度變流速自適應算法


文章日期:2018-12-04|閱讀數:


摘要:渦輪流量計應用十分廣泛, 但是當被測介質運動粘度較高時, 渦輪流量傳感器儀表系數隨著流速的增加而變化, 波動較大, 其變化規律呈現非線性。本文研究了口徑為DN10的渦輪流量計在流體介質粘度為43.49cSt條件下其儀表系數隨流速變化的規律, 通過在可變粘度標準裝置進行的實驗, 得到實驗數據, 擬合出了高粘度渦輪流量計流速修正算法, 運用該算法, 可以將渦輪流量計的儀表系數精度由4.4%提高到0.83%, 并對此算法了進行實驗驗證, 證明了該算法的有效性。

引言:

  WOLUNLIULIANGJIZAILIULIANGCELIANGLINGYUYOUZHUFEICHANGGUANGFANDEYINGYONG, KEYIYONGYUGONGYEYOUPINCELIANG, MINYONGZILAISHUICELIANGYIJIKEXUEJILIANG[1]。WOLUNLIULIANGCHUANGANQISHUYUSUDUSHILIULIANGJI, TADEGONGZUOYUANLISHILIYONGLIUTILIUDONGSHICHANSHENGDETUILISHIWOLUNLIULIANGJIWOLUNXIEPIANZHUANDONG, WOLUNWENDINGZHUANSUHOU, LIUTILIUGUODETIJILIULIANGHEWOLUNDEZHUANSUCHENGZHENGBI, YICILAIJISUANBEICELIUTIDETIJILIULIANG[2]。YIBANDE, WOMENBAWOLUNLIULIANGJIDANWEISHIJIANNEISHUCHUDEMOCHONGGESHUYUSHIJILIUGUOLIULIANGDEBIZHICHENGWEIWOLUNLIULIANGJIDEYIBIAOXISHU。WOLUNLIULIANGCHUANGANQIXUYAOZAITOURUSHIYONGQIAN, ZAIBIAOZHUNJILIANGZHUANGZHISHANGJINXINGBIAODING, JITONGGUOSHIYANJISUANCHUGAIWOLUNLIULIANGCHUANGANQIDEYIBIAOXISHU。YOUCIKEJIAN, WOLUNLIULIANGCHUANGANQIDEYIBIAOXISHUDUZHIJIEYINGXIANGZHU***ZHONGLIULIANGSHUJUCESUANDEDU。

幸运飞艇注册开户网址   DANSHI, JINGGUOGUONEIWAIKEYANRENYUANDEDALIANGSHIYANZHENGMING, BEICELIUTIJIEZHIDEZHANDUDUIWOLUNLIULIANGJICELIANGSHIDEYIBIAOXISHUYOUZHUHENDADEYINGXIANG, DANGBEICEJIEZHIWEISHUIHUOZHEDIZHANDUJIEZHIQIELIULIANGGAOYU0.5L/sSHI, WOLUNLIULIANGJIYIBIAOXISHUJIBENBAOCHIHENGDING, DANDANGBEICEJIEZHIZHANDUSHENGGAO, YIBIAOXISHUHUIYIZHISUIZHUZHANDUDEZENGJIAERZENGJIA, YOUQISHIDANGJIEZHIZHANDUGAOYU50cStSHI, QIXIANXINGFANWEIWANQUANXIAOSHI。ZAISHIJIDELIULIANGCELIANGGUOCHENGDANGZHONG, CELIANGGAOZHANDUYOUPINJIEZHISHI, HENNANBAOZHENGJIEZHILIUSUHENGDING, YIDANCHUXIANLIULIANGBODONG, WOLUNLIULIANGJIJIUHUICHANSHENGJIAODAWUCHA。SUOYI, DUIWOLUNLIULIANGJIZAIGAOZHANDUJIEZHICELIANGSHIBUTONGLIUSUXIADEYIBIAOXISHUJINXINGFENXIYOUFEICHANGZHONGYAODEYIYI。

1、實驗裝置:

幸运飞艇注册开户网址   WEIYANJIUWOLUNLIULIANGJIZAIGAOZHANDUJIEZHICELIANGSHIBUTONGLIUSUXIAYIBIAOXISHUDEBIANHUAGUILV, SHIYONGZHONGHANGGONGYE4113JILIANGZHANKEBIANZHANDUBIAOZHUNZHUANGZHIJINXINGSHIYAN, GAIZHUANGZHIBEICELIUTIJIEZHIWEI4050HANGKONGRUNHUAYOU, QIYOUZHUHENHAODEGAODIWENXINGNENG, ZHENGCHANGSHIYONGWENDUFANWEIWEI-40℃~200℃, DUANQIKEDA220℃。GUANDAONEIRUNHUAYOUDELIULIANGDAXIAOYOUBIANPINYOUBENGKONGZHI, BIANPINSHUCHUDIANYAWEI380~650V, SHUCHUGONGLVWEI0.75~400kW, GONGZUOPINLVWEI0~400Hz, TADEZHUDIANLUCAIYONGJIAO-ZHI-JIAODIANLU。ZAIYOUXIANGCHUGUANZHONGNEIZHIJIAREXITONG, KEYIDUIHANGKONGRUNHUAYOUJINXINGJIARE, YICILAIGAIBIANBEICEJIEZHIDEZHANDU。DUIWENDUDEKONGZHISHIYONGKEBIANCHENGLUOJIKONGZHIQI, NEIZHIPIDSUANFA, YOUYOUXIANGZHONGDEWENDUCHUANGANQI、YOUXIANGZHONGDEJIAREQIYIJIKONGZHIQIGOUCHENGBIHEWENDUKONGZHIHUILU, BAOZHENGYOUPINJIEZHIZAIGUANDAONEIGAOSUXUNHUANLIUDONGDETONGSHIWENDUWUCHABUCHAOGUO±1℃。GAIZHUANGZHIKECELIULIANGFANWEISHI0.5 m3/h~70 m3/h, KEBIANWENDUFANWEISHI-30℃~155℃, YOUWENKONGZHIDEJINGDUWEI±5%, BIAOZHUNCHENGDECELIANGJINGDUWEI0.02%, ZHUANGZHIBUQUEDINGDUWEI0.05%。ZHUANGZHIJIEGOUYUANLITURUTU1SUOSHI。

圖1 系統整體結構圖

幸运飞艇注册开户网址 TU1 XITONGZHENGTIJIEGOUTU

 

2、實驗原理:

  GAIZHUANGZHIDECELIANGYUANLISHIJINGTAICHENGZHONGFA, JIZAIGUDINGDESHIJIANNEI, SHIYONGDIANNAOCAIJIWOLUNLIULIANGJISHUCHUMOCHONGGESHU, TONGSHIJIANGLIUGUODELIUTIQUANBUYINRUDAOBIAOZHUNCHENGZHONGCHENGZHONG, CHUYIDUIYINGMIDULAIJISUANLIUGUODEZHENSHITIJILIULIANG, ***ZHONGZAIYONGLEIJITIJILIULIANGCHUYIZONGMOCHONGGESHUJISUANCHUWOLUNLIULIANGJIDEYIBIAOXISHU。

  SHIYANKAISHIQIANSHOUXIANKAIQIYOUBENG, SHIRUNHUAYOUZAIGUANDAONEIYUNSUXUNHUANLIUDONG, GENJUYIZHIDEJIEZHIZHANDUYUWENDUDEDUIYINGGUANXIBIAO, XUANZEYAOCESHIDEJIEZHIZHANDUSUODUIYINGDEWENDU, RANHOUKAISHIDUIJIEZHIJIARE, SHIZHUANGZHINEIDEJIEZHIDADAOSHEDINGDEWENDUJIQIDUIYINGDEZHANDU。SHIYANKAISHIHOU, SHIYANYUANZAISHANGWEIJIDIANNAOSHANGDIANJISHIYANKAISHI, HUANXIANGFALIJIDONGZUO, LIUGUOWOLUNLIULIANGJIDELIUTIHUIQUANBUYINRUDAOBIAOZHUNCHENGZHONG, YUCITONGSHIDIANNAOKAISHIJISHIBINGCAIJIWOLUNLIULIANGCHUANGANQIDESHUCHUMOCHONGSHU, JINGGUOYIFENZHONGHOUTINGZHI, BIAOZHUNCHENGHUIZIDONGSHANGCHUANLIUTILEIJIZHILIANGZHISHANGWEIJI, SHANGWEIJITONGGUOGAIJIEZHIWENDUMIDUDUIYINGBIAOZAIJISUANCHUTIJI, ZAITONGGUOTIJICHUYIMOCHONGZONGGESHUDEDAOYIBIAOXISHU。ZAISHIYANGUOCHENGZHONG, XITONGJISUANJIZHONGDECHENGXUHUIJILUDANCISHIYANCHIXUDESHIYANSHIJIAN、LEIJIZONGMOCHONGSHU、LEIJIZHILIANGLIULIANG、SHUNSHILIULIANG、LIUTIDANGQIANWENDUXIADEMIDU、LIUTIWENDUDENGXINXI。KEBIANZHANDUYETIBIAOZHUNZHUANGZHIRUTU2SUOSHI。

圖2 可變粘度液體標準裝置實物圖

TU2 KEBIANZHANDUYETIBIAOZHUNZHUANGZHISHIWUTU

3、實驗方案:

  SHIYANCAIYONGKOUJINGWEIDN10DEWOLUNLIULIANGCHUANGANQI, RUTU3SUOSHI。SHIYANZHONGXUANZE10℃JINXINGSHIYANCESHI, DUIYINGDELIUTIJIEZHIDEZHANDUWEI43.49cSt。XUANQU0.3m3/h、0.5m3/h、0.7m3/h、0.9m3/h、1.1m3/h、1.3m3/hHE1.5m3/hGONG7GELIULIANGDIANJINXING, SHIYANLIULIANGFANWEIWEI0.3m3/hDAO1.5m3/h。

圖3 渦輪流量傳感器樣機實物圖

TU3 WOLUNLIULIANGCHUANGANQIYANGJISHIWUTU

 

  SHIYANZHONGMEIGELIULIANGDIANJUNJINXING3CICELIANG, (j=1, 2, 3) , 3CICELIANGDEPINGJUNYIBIAOXISHUZUOWEICILIULIANGDIANDEYIBIAOXISHUKi (i=1, 2, 3, 4, 5) , GELIULIANGDIANYIBIAOXISHU***XIAOZHIYU***DAZHIDEPINGJUNZHI, ZUOWEICHUANGANQIDEYIBIAOXISHU。

  YIZHAOGUOBIAOWOLUNLIULIANGJIJIANDINGGUICHENG, LEIJILIULIANGDEXIANGDUISHIZHIWUCHAWEI:

計算公式

 

  SHIZHONG:EijWEIDIiJIANDINGDIANDIjCIJIANDINGSHI, CHUANGANQIXIANGDUISHIZHIWUCHA, %;

  VijWEIDIiJIANDINGDIANDIjCIJIANDINGSHI, WOLUNLIULIANGJILEIJILIULIANGZHI, m3;

  (Vs) ijWEIDIiJIANDINGDIANDIjCIJIANDINGSHI, BIAOZHUNLEIJITIJILIULIANGZHI, m3;

  DIiJIANDINGDIAN, WOLUNLIULIANGJILIULIANGJIXIANGDUISHIZHIWUCHADEZHIWEI[3]:

計算公式

 

4、實驗數據和結果:

幸运飞艇注册开户网址   SHIYANCEDEZAILIUTIJIEZHIDEZHANDUWEI43.49cStTIAOJIANXIA, DN10KOUJINGDEWOLUNLIULIANGCHUANGANQIZAIGEGESHIYANLIULIANGDIANDEYIBIAOXISHUKiRUBIAO1SUOSHI。

BIAO1 LIULIANGDIANDUIYINGYIBIAOXISHU (1/L)  

表1 流量點對應儀表系數 (1/L)

SHIYONGHANSHUNIHERUANJIANOriginpro 2017DUISUODESHUJUJINXINGNIHE, OriginWEIOriginLabGONGSICHUPINDEJIAOLIUXINGDEZHUANYEHANSHUHUITURUANJIAN, SHIGONGRENDEJIANDANYIXUE、CAOZUOLINGHUO、GONGNENGQIANGDADERUANJIAN, JIKEYIMANZUYIBANYONGHUDEZHITUXUYAO, YEKEYIMANZUYONGHUSHUJUFENXI、HANSHUNIHEDEXUYAO。

SHIYONGOriginRUANJIANZHONGDESICIDUOXIANGSHIpolynomialNIHEGONGSHI, SHIYONG***XIAOERCHENGFA, DEDAORUXIAHANSHU, QIZHONGLIUSUWEIZIBIANLIANGX, YIBIAOXISHUWEIYINBIANLIANGY:

計算公式

 

TU4WEILIULIANGYUYIBIAOXISHUDENIHEQUXIANTU。

  BIAO2WEIGEDUIYINGLIULIANGDIANDENIHEHOUYIBIAOXISHUDEWUCHA。

幸运飞艇注册开户网址   RUGUOZHIJIECAIYONGGEGELIULIANGDIANDEYIBIAOXISHUQUPINGJUNZHIDEYIBIAOXISHUWEI1610.68, BIAO3WEIWEICAIYONGNIHEXIUZHENGGONGSHILIULIANGDIANDUIYINGYIBIAOXISHUWUCHA。

圖4 儀表系數擬合曲線圖

TU4 YIBIAOXISHUNIHEQUXIANTU

 

BIAO2 NIHEHOUGELIULIANGDIANDUIYINGYIBIAOXISHUWUCHA (%)

表2 擬合后各流量點對應儀表系數誤差 (%)

BIAO3 WEICAIYONGNIHEXIUZHENGGONGSHILIULIANGDIANDUIYINGYIBIAOXISHUWUCHA (%)  

表3 未采用擬合修正公式流量點對應儀表系數誤差 (%)

  WEIZHENGMINGGAIGAOZHANDUBIANLIUSUZISHIYINGSUANFAJIGONGSHIDEYOUXIAOXING, ZHONGXINXUANQUSIGELIULIANGDIAN:0.4m3/h、0.6m3/h、0.8m3/h、1.0m3/hDUIGAIGONGSHIYIJISUANFAJINXINGJINGDUYANZHENG, DEDAOBIAO4SHUJU, BIAO5WEIGEDUIYINGLIULIANGDIANDENIHEHOUYIBIAOXISHUDEWUCHA。

BIAO4 SHIYANCEDELIULIANGDIANDUIYINGYIBIAOXISHU (1/L)

表4 實驗測得流量點對應儀表系數 (1/L)

BIAO5 YANZHENGSHIYANGELIULIANGDIANDUIYINGYIBIAOXISHUWUCHA (%)  

表5 驗證實驗各流量點對應儀表系數誤差 (%)

  RUGUOZHIJIECAIYONGGEGELIULIANGDIANDEYIBIAOXISHUQUPINGJUNZHIDEYIBIAOXISHUWEI1610.68, BIAO6WEIWEICAIYONGNIHEXIUZHENGGONGSHILIULIANGDIANDUIYINGYIBIAOXISHUWUCHA。

幸运飞艇注册开户网址 BIAO6 WEICAIYONGNIHEXIUZHENGGONGSHILIULIANGDIANDUIYINGYIBIAOXISHUWUCHA (%)

表6 未采用擬合修正公式流量點對應儀表系數誤差 (%)

幸运飞艇注册开户网址   SHIYANJIEGUOBIAOMING, JINGGUOZHEZHONGGAOZHANDUBIANLIUSUZISHIYINGSUANFAXIUZHENGHOU, YIBIAOXISHUJINGDUTIGAODAO0.83%。RUGUOZHISHIJIANDANJIANGYIBIAOXISHUQUPINGJUN, ***DAWUCHAJIANGDADAO4.4%。ERQIECONGXIUZHENGHOUYIBIAOXISHUWUCHAZHIYUWEIJINGGUOXIUZHENGYIBIAOXISHUWUCHAZHIXIANGBI, JIBENGEGELIULIANGDIANJINGDUDOUYOUJIAODADETISHENG。

5、結論:

  BENWENDUIGAOZHANDUXIAWOLUNLIULIANGJIZAICELIANGBIANLIUSULIUTIJIEZHISHIDEYIBIAOXISHUBIANHUAGUILVJINXINGLEYANJIU, ZAI43.49cStZHANDUTIAOJIANXIA, SHIYONGDN10WOLUNLIULIANGCHUANGANQIZAI0.3m3/h~1.5m3/hLIUSUFANWEINEIJINXINGSHIYAN, BINGTICHUYIZHONGGAOZHANDUBIANLIUSUZISHIYINGSUANFA, GAIGAOZHANDUBIANLIUSUSUANFANENGGOUJIANGYIBIAOXISHUJINGDUYOU4.4%TIGAODAO0.83%, BINGDUICIJINXINGLEYANZHENG, JIEGUOZHENGMINGCISUANFAQUESHINENGGOUDAFUTIGAOWOLUNLIULIANGJIDECELIANGJINGDU。



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