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航空煤油渦輪流量計標準裝置測定


文章日期:2018-11-29|閱讀數:


摘要:在分析標準表法液體流量標準裝置基本工作原理的基礎上對裝置結構進行了設計, 重點對渦輪流量計的選型以及前后直管段的長度確定, 不同溫度下3#航空煤油的黏度對于直管段要求不同, 直管段的合理選擇是渦輪流量計計量準確與否的前提。并確定流量計、溫度變送器、壓力變送器的選型方案, 給出了裝置儀表的檢定實驗結果。并且通過現場試驗來驗證裝置的可行性, 為標準表法流量標準裝置的實施與推廣提供依據。

0、引言:標準裝置按計量器具可分為稱重法、容積法和標準表法[1]。其中標準表法是利用流體力學連續性原理將標準表和被檢表串聯連接, 用標準表和相關的溫度、壓力等儀表給出標準累積流量, 然后與被檢表的累積流量比較, 確定被檢表的技術指標。標準表法流量標準裝置相對其他標準裝置有結構簡單、工作效率高、操作簡單等突出優點, 特別是可以給出更寬的流量范圍[2]。

  標準法液體流量標準裝置中***重要的儀器就是標準表, 本裝置中選用渦輪流量計做為標準表。自20世紀50年代末起, 國內外學者對渦輪流量計的性能影響做了大量的實驗, 并先后提出了渦輪流量計的理論模型, 其中以Thompson[3]提出的模型***具代表性。吳國玢等[4]在Thompson模型的基礎上理論預測了黏度對渦輪流量計性能的影響。國內外對于流量儀表檢定裝置開展了深入研究。Roger C.Baker等[5]基于容積法設計了電子校準系統, 雖然其準確度能滿足, 但仍屬于傳統的容積校準法, 并且存在較大的噪聲, 對于大流量的航空煤油校準裝置并不適用。關于渦輪流量計的校準裝置, Grady H.Stevens[6]采用壓差式流量計校準渦輪流量計, 同時對流體添加正弦擾動, 通過一段直管段運行平穩后進入差壓式流量計幸运飞艇注册开户网址, 進而得出不同的流量值進行比較。這種校準方法可以認為是標準表法的一種, 其重復性強, 比較實用, 但其準確度不高, 對于高準確度要求的航空煤油流量裝置的檢定無法滿足要求。國內外關于校準裝置的研究主要集中在傳統的質量法和體積法[7]。傳統的校驗方法無法滿足對高準確度儀表的檢定。對此, 有國內學者實現了突破, 采用標準體積管法, 能實現對測量準確度的要求, 但其測量范圍較小, 并且沒有對標準裝置的動態性能做出研究。流量計量經過長期的發展, 已經應用在各個領域。渦輪流量計因具有準確度高、響應快、測量范圍寬等優點, 國內外學者對其開展了大量的實驗及仿真研究[8], 深入了解它的特性, 創造更高準確度的渦輪流量計來作為標準裝置的標準表來檢定待測流量計。

幸运飞艇注册开户网址   YOUYUNIANDUDUIWOLUNLIULIANGJIXINGNENGDEYINGXIANGJIAODA, WOLUNLIULIANGJIZUOWEIBIAOZHUNBIAODADUOYINGYONGYUQITILIULIANGDEJILIANG, DUIYUDINIANDUDEYETIJILIANG, WOLUNLIULIANGJITONGYANGYOUZHUJIAOGAODEZHUNQUEDU。BENZHUANGZHIJIUSHIYUNYONGWOLUNLIULIANGJIZUOWEIBIAOZHUNBIAODEBIAOZHUNZHUANGZHIDUI3#HANGKONGMEIYOUJINXINGLIULIANGJILIANG。

1、渦輪流量計測量模型:

  WOLUNLIULIANGJISHIYIZHONGSUDUSHILIULIANGYIBIAO, TAYIDONGLIANGSHOUHENGYUANLIWEIJICHU。LIUTICHONGJIXIELUN, SHIXIELUNXUANZHUAN, XIELUNDEXUANZHUANSUDUSUILIULIANGDEBIANHUAERBIANHUA, GENJUXIELUNZHUANSUQIUCHULIULIANGZHI。GENJUERYUANLIUDONGMOXING, CONGLIUTILIXUEJICHULILUNCHUFA, YUNYONGERYUANBIANJIECENGLILUNHEXIEZHALILUNTICHUWOLUNLIULIANGNIANXINGMOCAZULIJUHEQUDONGLIJUDELILUNMOXING:

計算公式  

幸运飞艇注册开户网址   SHIZHONG, WOLUNLIULIANGJIZAILIXIANGDEGONGZUOZHUANGTAIXIA, WOLUNLIULIANGJIDEYIBIAOXISHUKSHICHANGSHU, QIWULIYIYIJIUSHIDANWEITIJIqvDEMOCHONGSHUf, RUSHI (1) SUOSHI。DANSHIJIGONGZUOZHONGWOLUNLIULIANGJIDEGONGZUOZHUANGTAIBINGFEILIXIANGDEGONGZUOZHUANGTAI, BEICELIUTITONGGUOXIELUNSHIHUICHANSHENGYIXIAJIZHONGLIJU:JINRUWOLUNLIULIANGJIDELIUTIDUIWOLUNXIEPIANCHANSHENGDETUIDONGLIJUTr, YOUYUXIELUNZHOUYUZHOUCHENGMOCAERCHANSHENGDEJIXIEZULIJUTrm, BEICELIUTITONGGUOWOLUNLIULIANGJIXIELUNSHIDUIXIELUNCHANSHENGDELIUDONGZULIJUTrf, WOLUNLIULIANGJIZHONGDIANCIZHUANHUANQIDUIWOLUNLIULIANGJIXIELUNCHANSHENGDEDIANCILIJUTre。GENJUNIUDUNYUNDONGDINGLV, KEYITUISUANCHURUSHI (2) DEWOLUNLIULIANGJIXIELUNDEYUNDONGFANGCHENG。GENJUWOLUNLIULIANGJIXIELUNJINCHUKOUSUDUSANJIAOXINGFENXIJISUAN, KEDECHURUSHI (3) DEWOLUNLIULIANGJIDECELIANGMOXING, QIZHONGZWEIXIELUNLIULIANGJIDEXIEPIANSHU, WEIWOLUNXIEPIANDEJIEGOUJIAO。YISHANGSHIWOLUNLIULIANGJIDECELIANGMOXING, KEYIDINGXINGDIMIAOSHUWOLUNLIULIANGJIDEJIBENTEXING。

2、裝置的結構設計與分析:

2.1、標準表法流量標準裝置的結構設計:

  GENJUJIAYOUJIDEJILIANGJIANDINGGUICHENG, JIAYOUJILIULIANGJIXUYAODINGQIQUJIANDINGBUMENJIANDINGYIBIAODEZHUNQUEDU, JIANDINGGUOCHENGZHONGYIBIAODEYUNSHUXUYAOHAOFEIHENCHANGDESHIJIAN、JINGLIYIJICAILI。BENZHUANGZHISHEJIDECHUZHONGSHIWEIJILIANGJIANDINGBUMENZHIZAOCHUBIANYUXIEDAI、KEYIDONGDEBIAOZHUNZHUANGZHI, WEIJILIANGJIANDINGRENYUANDUIJICHANGJIAYOUJILIULIANGJIANDINGSHIJIESHENGYIDINGDESHIJIANHEJINGLI。BIAOZHUNBIAOZHUANGZHIDECHUXIANKEYIDADAJIEYUEJIANDINGSUOXUYAODESHIJIANCHENGBEN。GENJUJIANDINGXIANCHANGDEXUQIU, BIAOZHUNZHUANGZHIDECHANGDUBUNENGDAYU1.5 m。BIAOZHUNZHUANGZHIZHONGBIAOZHUNBIAOXUANYONGDESHIGAOZHUNQUEDUDEWOLUNLIULIANGJI。WOLUNLIULIANGJIJILIANGZHUNQUEDEQIANTISHIZAIWOLUNLIULIANGDEQIANHOUDUANYAOBAOCHIZUGOUDEZHIGUANDUAN, ZHIGUANDUANSHIBEICELIUTIJINRUWOLUNLIULIANGJIZHIQIANLIUDONGZHUANGTAIWENDINGJUNYUNDEQIANZHIZHUANGZHI。

  RUTU1SUOSHI, BIAOZHUNZHUANGZHIYOUGUOLVQI、ZHENGLIUQI、YALIBIANSONGQI、QIANZHIGUANDUAN、WOLUNLIULIANGJI、HOUZHIGUANDUAN、WENDUBIANSONGQI、QIUFAZUCHENG。JIYUXIANCHANGTIAOJIANDUIZHUANGZHIDEYAOQIU, BIAOZHUNZHUANGZHICHANGDUYOUXIAN, GUXUJIAWANGUAN, ZAIJINGGUOGUOLVQIDEWANGUANHEZHIGUANDUANZHIJIANJIAYOUZHENGLIUQI, QIMUDESHIRANGLIUTIZAIYOUXIANDEZHIGUANDUANZHONGGENGWENDING, CONGERBAOZHENGCELIANGZHUNQUEDU。FEIJIJIAYOUJILIULIANGCHUKOUJIETOUWEIHJS-63AHANGKONGYALIJIAYOUJIETOU, TONGGUOJIAYOURUANGUANYUBIAOZHUNZHUANGZHIRUKOUHDF63XINGHANGKONGSHUYOUJIETOUFALIANJIE。JINKOULIUTIYICITONGGUOGUOLVQI、ZHENGLIUQI、WOLUNLIULIANGJI、QIUFAHOU, YONGHJS-63AHANGKONGYALIJIAYOUJIETOUYUJIAYOUJIHUIYOUGUANLUHDF63XINGHANGKONGSHUYOUJIETOUFALIANJIE。

  TU2SHIZHUANGZHIDEDIANQILIANJIEYUANLITU, WOLUNLIULIANGJIDEMOCHONGXINHAO、WENDUBIANSONGQIHEYALIBIANSONGQIDEXINHAOLIANJIEZHILIULIANGJISUANYI, TONGGUORS485-USBJIETOU, GEGEXINHAOLIANJIEZHIBIJIBENDIANNAOJINXINGCAIJIHEJISUAN, GEYONGDIANQIDEDIANYUANJUNYOUUPSDIANYUANTIGONG。

圖1 標準裝置原理圖

TU1 BIAOZHUNZHUANGZHIYUANLITU

 

圖2 電氣連接原理圖

幸运飞艇注册开户网址 TU2 DIANQILIANJIEYUANLITU

幸运飞艇注册开户网址   BIAOZHUNBIAOFALIULIANGYIBIAOJIANDINGXITONGRUANJIAN (TU3) KEYIGENJUBEICELIUTIYIJIYIBIAODEWUXINGTIAOJIANJINXINGSHEZHI, KEYICAIJIMOCHONGSHU、WENDU、YALI、SHIJIAN、SHUNSHIJILEIJILIULIANGDENGSHUJU。BIAODINGJIESHUHOU, CAIJIDEBIAOZHUNBIAOLEIJILIULIANGHESHURUBEICEBIAODELEIJILIULIANGJINXINGBIDUIJISUAN。

圖3 標準表法流量儀表檢定系統軟件界面

幸运飞艇注册开户网址 TU3 BIAOZHUNBIAOFALIULIANGYIBIAOJIANDINGXITONGRUANJIANJIEMIAN

幸运飞艇注册开户网址 2.2、BIAOZHUNBIAOFALIULIANGBIAOZHUNZHUANGZHIDEKEXINGXINGFENXI:

  YETILIULIANGDEJILIANGFANGFAZHUYAOKEYIFENWEIBIAOZHUNRONGQIFAHEBIAOZHUNBIAOFA。BIAOZHUNRONGQIFA:BIAOZHUNRONGQIXIAOYANYETILIULIANGYOUKEYIFENWEILIANGZHONG, JIDONGTAIXIAOYANFAHEJINGTAIXIAOYANFA。DONGTAIXIAOYANFASHIRANGBEICELIUTIANZHAOYIDINGDELIULIANGLIURUBIAOZHUNRONGQI, ANZHAOYIDINGDESHIJIANDUCHUBIAOZHUNRONGQIYEMIANDESHANGSHENGLIANG, HUOZHEDUCHUYEMIANSHANGSHENGYIDINGGAODUSUOXUYAODESHIJIAN。JINGTAIXIAOYANFASHIRANGYIDINGLIANGTIJIDELIUTIJINRUBIAOZHUNRONGQI, CEDINGCONGKAISHIDAOJIESHUSUOXUYAODESHIJIAN。BIAOZHUNRONGQIFAYOUJIAOGAODEJILIANGZHUNQUEDU, RANERZAIBIAODINGDALIULIANGSHI, ZHIZAODAXINGJINGMIDEBIAOZHUNRONGQIBIJIAOKUNNAN。LINGWAI, JIAYOUJILIULIANGBIJIAODA, JINRUBIAOZHUNRONGQISHIHANGKONGMEIYOUHUIHUNRUKONGQIYINGXIANGJILIANGZHUNQUEDU。BIAOZHUNBIAOFASHIYONGZHUNQUEDUGENGGAODEYIBIAOZUOWEIBIAOZHUNYIBIAODUIQITALIULIANGJIJINXINGXIAOZHUN, YONGZUOGAOZHUNQUEDULIULIANGJIYOURONGJISHI、WOLUNSHI、DIANCISHIHECHAYASHIDENGXINGSHI。BIAOZHUNZHUANGZHIXUANYONGDESHIGAOZHUNQUEDUDEWOLUNLIULIANGJI。

幸运飞艇注册开户网址 BIAO1 YETIWOLUNLIULIANGJIZHUNQUEDUDENGJI

表1 液體渦輪流量計準確度等級

  GENJUWOLUNLIULIANGJIJIANDINGGUICHENG[10], ZHUANGZHIDEKUOZHANBUQUEDINGDUYINGBUDAYULIULIANGJI***DAYUNXUWUCHADE1/3。YOUYUJIAYOUJIYIBIAOZHUNQUEDUDENGJIWEI0.2JI, QI***DAYUNXUWUCHAYINGWEI±0.2%, ZUOWEIBIAOZHUNBIAOBIAOZHUNZHUANGZHIYIBIAODE***DAYUNXUWUCHAYINGWEI±0.067%。BENBIAOZHUNZHUANGZHIZHONGWOLUNLIULIANGJIDECHUCHANGCANSHUWEIYIBIAODE***DAWUCHAJI0.125%, YIBIAODEZHONGFUXINGWEI0.02%。DANCONGYIBIAODE***DAYUNXUWUCHAFANGMIANKAOLV, YIBIAOBUNENGMANZUZUOWEIBIAOZHUNBIAOJIANDINGDEZHUNQUEDU。DANDUIJIAYOUJIBIAODING, SHIDINGDIANBIAODING。GENJUDINGDIANBIAODINGDEYUANLI, YIBIAODEZHONGFUXINGKEYIZUOWEIZHUNQUEDUDENGJIQUXIAOZHUNJIAYOUJIDELIULIANGJI。

  GENJULIULIANGJIANDINGZHUANGZHIDEYAOQIU, LIULIANGBIAOZHUNZHUANGZHIJIQIPEITAOYIBIAOJUNYINGJUYOUYOUXIAODEJIANDINGZHENGSHU。

  WOLUNLIULIANGJI;XIAOZHUNYONGLIUTI:RP-3HANGKONGMEIYOUXIAOZHUNYONGLIUTIWENDU24.3℃;LIULIANGFANWEI:71.967~89.849 m3/h。

  YOUBIAO2WOLUNLIULIANGJIJIANDINGJIEGUOXIANSHI, YIBIAOXISHUDEBUQUEDINGDUWEI0.06%, ERJIAYOUJIYIBIAOZHUNQUEDUDENGJIWEI0.2JI, GENJUWOLUNLIULIANGJIJILIANGJIANDINGGUICHENG, ZHUANGZHIDEKUOZHANQUEDINGDUBUDAYULIULIANGJI***DAYUNXUWUCHADE1/3。BIAO3、BIAO4XIANSHIWENDUBIANSONGQIHEYALIBIANSONGQIDEKUOZHANBUQUEDINGDUMANZUXIANGYINGDEJILIANGJIANDINGGUICHENG。YOUCIKEDECHUJIELUN, BENZHUANGZHIKEYIZUOWEILIULIANGBIAOZHUNZHUANGZHIJIANDINGHANGKONGMEIYOUDELIULIANG。DUIYUWENDUYALIDECELIANG, GENJUYAOQIU, WENDUCELIANGBUQUEDINGDUSUOYINQIDELIULIANGCELIANGBUQUEDINGDUYINGBUCHAOGUOBIAOZHUNZHUANGZHIKUOZHANBUQUEDINGDUDE1/5, YALICELIANGBUQUEDINGDUSUOYINQIDELIULIANGCELIANGBUQUEDINGDUYINGBUCHAOGUOBIAOZHUNZHUANGZHIKUOZHANBUQUEDINGDUDE1/5。

幸运飞艇注册开户网址 BIAO2 WOLUNLIULIANGJIXIAOZHUNJIEGUO

表2 渦輪流量計校準結果

BIAO3 WENDUBIANSONGQIXIAOZHUNJIEGUO

表3 溫度變送器校準結果

幸运飞艇注册开户网址 BIAO4 YALIBIANSONGQIXIAOZHUNJIEGUO

表4 壓力變送器校準結果

3、裝置的不確定度分析:

幸运飞艇注册开户网址   GENJUBIAOZHUNBIAOFALIULIANGBIAOZHUNZHUANGZHIDEBUQUEDINGDUYAOQIU, DUIZHUANGZHIBUQUEDINGDUJINXINGFENXI, BIAOZHUNZHUANGZHIHECHENGBUQUEDINGDUCELIANGMOXINGWEI

計算公式

幸运飞艇注册开户网址  

  SHIZHONG:u1——BIAOZHUNLIULIANGJIDINGDIANSHIYONGSHIALEIBUQUEDINGDU;

幸运飞艇注册开户网址 u2——JISHIQIDEALEIBIAOZHUNBUQUEDINGDU;

u3——JISHIQIDEBLEIBIAOZHUNBUQUEDINGDU;

幸运飞艇注册开户网址 u4——BIAOZHUNLIULIANGJIBUDAIPEITAOYIBIAOYIQIJIANDINGSHI

YINQIDELIULIANGCELIANGBUQUEDINGDU, DAIPEITAOYIBIAODEBIAOZHUNLIULIANGJIYINGDAIPEITAOYIBIAOYIQIJIANDING, FOUZEYINGKAOLVPEITAOYIBIAODEBUQUEDINGDU;

u5——BIAOZHUNLIULIANGJIJIANDINGHESHIYONGDELIUTITIAOJIANBUTONGYINQIDELIULIANGCELIANGBUQUEDINGDU;

u6——SHUJUCAIJI、XINHAOCHULI、SHUJUCHULIJITONGXINBUQUEDINGDUYINQIDELIULIANGCELIANGBUQUEDINGDU;

u7——JIANDINGBIAOZHUNLIULIANGJIDELIULIANGBIAOZHUNZHUANGZHIDEHECHENGBUQUEDINGDU

幸运飞艇注册开户网址   QIZHONG, BENZHUANGZHIZHONGLIULIANGJISUANYICAIYONGXMFL-7BIAOZHUNLIULIANGJISUANYI, YOUJIAOGAODEFENBIANLI。DUIYUSHUNSHILIANGZAILIULIANGCHUYU100~1 000 L/minSHI, FENBIANLIWEIBAIFENZHIYI (JI0.01) GEDANWEI, DUIMOCHONGWEI0.01 Hz。DUIYULEIJILIULIANGZAI10~10 000 LSHI, FENBIANLIWEIQIANFENZHIYI (JI0.001) GEDANWEI, DUISHIJIANWEI1 ms。QIJISHIQIWUCHAKEYIHULVEBUJI, JIu2=u3=0。BIAOZHUNLIULIANGJIWEIWOLUNLIULIANGJI, QICHUANGANQIYUPEITAOZHUANHUANQIWEIYITI, JIANDINGSHISHIYIQIJIANDINGDE, ZEu4=0。BIAOZHUNLIULIANGJIJIANDINGHESHIYONGDELIUTIDOUSHI3#HANGKONGMEIYOU, GUu5=0。BIAOZHUNLIULIANGJIYIBIAOXISHUDEZHONGFUXINGWEI0.02%, ANGUICHENGKEHULVEBUJI, JIu6=0。

幸运飞艇注册开户网址   DUIYUBIAOZHUNLIULIANGJICELIANGALEIBUQUEDINGDUu1DEJISUAN, DUIDINGDIANSHIYONGDELIULIANGJI, SHIYONGYIBIAOXISHUSHI, YOU

計算公式

 

  SHIZHONG:Si——DIiGEJIANDINGDIANALEIBIAOZHUNBUQUEDINGDU;

幸运飞艇注册开户网址   σKi——DIiGEJIANDINGDIANYIBIAOXISHUDEBIAOZHUNPIANCHA, 1/m3;

  Ki——DIiGEJIANDINGDIANYIBIAOXISHUDEPINGJUNZHI, 1/m3BENZHUANGZHIBIAODINGGUANXIANZHIYOUYITAIBIAOZHUNBIAO, QIBIAOZHUNLIULIANGJIDEALEIBUQUEDINGDUu1,

計算公式

 

幸运飞艇注册开户网址   GENJUWOLUNLIULIANGJIDEJIANDINGJILU, GETIAOBIAODINGGUANXIANZHONGBIAOZHUNWOLUNLIULIANGJIYOU: (S1) max=0.02%, GUQUu1=0.02%。

  GENJUYISHANGFENXI, BENZHUANGZHIBUQUEDINGDUWEI

計算公式

 

  SHIZHONG:u1=0.002%;

  u7——JIANDINGBIAOZHUNLIULIANGJIDELIULIANGBIAOZHUNZHUANGZHIDEHECHENGBUQUEDINGDU

4、結語:

幸运飞艇注册开户网址   ZHONGDIANDUIZHUANGZHIZHIGUANDUANDECHANGDUJINXINGXUANZE, QUEBAOBUTONGNIANDUXIA3#HANGKONGMEIYOUZAIJINRUWOLUNLIULIANGJIZHIQIANJUNYOUWENDINGDEJUNYUNDELIUDONGZHUANGTAI。DUIZHUANGZHIZHENGTIDEBUQUEDINGDUFENPEIJINXINGJISUAN, QUEDINGLEBIAOZHUNBIAO、WENDUBIANSONGQI、YALIBIANSONGQIDEXUANZEFANGAN。BENZHUANGZHIDEYANZHI, DADASUODUANLEJICHANGJIAYOUJIYIBIAOBIAODINGDESHIJIAN。ZHUANGZHITIJIXIAO、JIEGOUJIANDAN、CAOZUOFANGBIAN。BENZHUANGZHIDEYANJIUYOULIYUBIAOZHUNZHUANGZHIDEPUJI, DUILIULIANGJIDEYANFAYIJISHENGCHANJUYOUZHONGYAOYIYI。



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