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航空煤油涡轮流量计标准装置测定


文章日期:2018-11-29|阅读数:


摘要:在分析标准表法液体流量标准装置基本工作原理的基础上对装置结构进行了设计, 重点对涡轮流量计的选型以及前后直管段的长度确定, 不同温度下3#航空煤油的黏度对于直管段要求不同, 直管段的合理选择是涡轮流量计计量准确与否的前提。并确定流量计、温度变送器、压力变送器的选型方案, 给出了装置仪表的检定实验结果。并且通过现场试验来验证装置的可行性, 为标准表法流量标准装置的实施与推广提供依据。

0、引言:pk10赛车冠军单双计划标准装置按计量器具可分为称重法、容积法和标准表法[1]。其中标准表法是利用流体力学连续性原理将标准表和被检表串联连接, 用标准表和相关的温度、压力等仪表给出标准累积流量, 然后与被检表的累积流量比较, 确定被检表的技术指标。标准表法流量标准装置相对其他标准装置有结构简单、工作效率高、操作简单等突出优点, 特别是可以给出更宽的流量范围[2]。

  标准法液体流量标准装置中***重要的仪器就是标准表, 本装置中选用涡轮流量计做为标准表。自20世纪50年代末起, 国内外学者对涡轮流量计的性能影响做了大量的实验, 并先后提出了涡轮流量计的理论模型, 其中以Thompson[3]提出的模型***具代表性。吴国玢等[4]在Thompson模型的基础上理论预测了黏度对涡轮流量计性能的影响。国内外对于流量仪表检定装置开展了深入研究。Roger C.Baker等[5]基于容积法设计了电子校准系统, 虽然其准确度能满足, 但仍属于传统的容积校准法, 并且存在较大的噪声, 对于大流量的航空煤油校准装置并不适用。关于涡轮流量计的校准装置, Grady H.Stevens[6]采用压差式流量计校准涡轮流量计, 同时对流体添加正弦扰动, 通过一段直管段运行平稳后进入差压式流量计pk10赛车冠军单双计划, 进而得出不同的流量值进行比较。这种校准方法可以认为是标准表法的一种, 其重复性强, 比较实用, 但其准确度不高, 对于高准确度要求的航空煤油流量装置的检定无法满足要求。国内外关于校准装置的研究主要集中在传统的质量法和体积法[7]。传统的校验方法无法满足对高准确度仪表的检定。对此, 有国内学者实现了突破, 采用标准体积管法, 能实现对测量准确度的要求, 但其测量范围较小, 并且没有对标准装置的动态性能做出研究。流量计量经过长期的发展, 已经应用在各个领域。涡轮流量计因具有准确度高、响应快、测量范围宽等优点, 国内外学者对其开展了大量的实验及仿真研究[8], 深入了解它的特性, 创造更高准确度的涡轮流量计来作为标准装置的标准表来检定待测流量计。

  YOUYUNIANDUDUIWOLUNLIULIANGJIXINGNENGDEYINGXIANGJIAODA, WOLUNLIULIANGJIZUOWEIBIAOZHUNBIAODADUOYINGYONGYUQITILIULIANGDEJILIANG, DUIYUDINIANDUDEYETIJILIANG, WOLUNLIULIANGJITONGYANGYOUZHEJIAOGAODEZHUNQUEDU。BENZHUANGZHIJIUSHIYUNYONGWOLUNLIULIANGJIZUOWEIBIAOZHUNBIAODEBIAOZHUNZHUANGZHIDUI3#HANGKONGMEIYOUJINXINGLIULIANGJILIANG。

1、涡轮流量计测量模型:

  WOLUNLIULIANGJISHIYIZHONGSUDUSHILIULIANGYIBIAO, TAYIDONGLIANGSHOUHENGYUANLIWEIJICHU。LIUTICHONGJIYELUN, SHIYELUNXUANZHUAN, YELUNDEXUANZHUANSUDUSUILIULIANGDEBIANHUAERBIANHUA, GENJUYELUNZHUANSUQIUCHULIULIANGZHI。GENJUERYUANLIUDONGMOXING, CONGLIUTILIXUEJICHULILUNCHUFA, YUNYONGERYUANBIANJIECENGLILUNHEYEZHALILUNTICHUWOLUNLIULIANGNIANXINGMOCAZULIJUHEQUDONGLIJUDELILUNMOXING:

计算公式  

pk10赛车冠军单双计划   SHIZHONG, WOLUNLIULIANGJIZAILIXIANGDEGONGZUOZHUANGTAIXIA, WOLUNLIULIANGJIDEYIBIAOXISHUKSHICHANGSHU, QIWULIYIYIJIUSHIDANWEITIJIqvDEMAICHONGSHUf, RUSHI (1) SUOSHI。DANSHIJIGONGZUOZHONGWOLUNLIULIANGJIDEGONGZUOZHUANGTAIBINGFEILIXIANGDEGONGZUOZHUANGTAI, BEICELIUTITONGGUOYELUNSHIHUICHANSHENGYIXIAJIZHONGLIJU:JINRUWOLUNLIULIANGJIDELIUTIDUIWOLUNYEPIANCHANSHENGDETUIDONGLIJUTr, YOUYUYELUNZHOUYUZHOUCHENGMOCAERCHANSHENGDEJIXIEZULIJUTrm, BEICELIUTITONGGUOWOLUNLIULIANGJIYELUNSHIDUIYELUNCHANSHENGDELIUDONGZULIJUTrf, WOLUNLIULIANGJIZHONGDIANCIZHUANHUANQIDUIWOLUNLIULIANGJIYELUNCHANSHENGDEDIANCILIJUTre。GENJUNIUDUNYUNDONGDINGLV, KEYITUISUANCHURUSHI (2) DEWOLUNLIULIANGJIYELUNDEYUNDONGFANGCHENG。GENJUWOLUNLIULIANGJIYELUNJINCHUKOUSUDUSANJIAOXINGFENXIJISUAN, KEDECHURUSHI (3) DEWOLUNLIULIANGJIDECELIANGMOXING, QIZHONGZWEIYELUNLIULIANGJIDEYEPIANSHU, WEIWOLUNYEPIANDEJIEGOUJIAO。YISHANGSHIWOLUNLIULIANGJIDECELIANGMOXING, KEYIDINGXINGDIMIAOSHUWOLUNLIULIANGJIDEJIBENTEXING。

2、装置的结构设计与分析:

2.1、标准表法流量标准装置的结构设计:

pk10赛车冠军单双计划   GENJUJIAYOUJIDEJILIANGJIANDINGGUICHENG, JIAYOUJILIULIANGJIXUYAODINGQIQUJIANDINGBUMENJIANDINGYIBIAODEZHUNQUEDU, JIANDINGGUOCHENGZHONGYIBIAODEYUNSHUXUYAOHAOFEIHENZHANGDESHIJIAN、JINGLIYIJICAILI。BENZHUANGZHISHEJIDECHUZHONGSHIWEIJILIANGJIANDINGBUMENZHIZAOCHUBIANYUXIEDAI、KEYIDONGDEBIAOZHUNZHUANGZHI, WEIJILIANGJIANDINGRENYUANDUIJICHANGJIAYOUJILIULIANGJIANDINGSHIJIESHENGYIDINGDESHIJIANHEJINGLI。BIAOZHUNBIAOZHUANGZHIDECHUXIANKEYIDADAJIEYUEJIANDINGSUOXUYAODESHIJIANCHENGBEN。GENJUJIANDINGXIANCHANGDEXUQIU, BIAOZHUNZHUANGZHIDEZHANGDUBUNENGDAYU1.5 m。BIAOZHUNZHUANGZHIZHONGBIAOZHUNBIAOXUANYONGDESHIGAOZHUNQUEDUDEWOLUNLIULIANGJI。WOLUNLIULIANGJIJILIANGZHUNQUEDEQIANTISHIZAIWOLUNLIULIANGDEQIANHOUDUANYAOBAOCHIZUGOUDEZHIGUANDUAN, ZHIGUANDUANSHIBEICELIUTIJINRUWOLUNLIULIANGJIZHIQIANLIUDONGZHUANGTAIWENDINGJUNYUNDEQIANZHIZHUANGZHI。

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

pk10赛车冠军单双计划   TU2SHIZHUANGZHIDEDIANQILIANJIEYUANLITU, WOLUNLIULIANGJIDEMAICHONGXINHAO、WENDUBIANSONGQIHEYALIBIANSONGQIDEXINHAOLIANJIEZHILIULIANGJISUANYI, TONGGUORS485-USBJIETOU, GEGEXINHAOLIANJIEZHIBIJIBENDIANNAOJINXINGCAIJIHEJISUAN, GEYONGDIANQIDEDIANYUANJUNYOUUPSDIANYUANTIGONG。

图1 标准装置原理图

TU1 BIAOZHUNZHUANGZHIYUANLITU

 

图2 电气连接原理图

pk10赛车冠军单双计划 TU2 DIANQILIANJIEYUANLITU

pk10赛车冠军单双计划   BIAOZHUNBIAOFALIULIANGYIBIAOJIANDINGXITONGRUANJIAN (TU3) KEYIGENJUBEICELIUTIYIJIYIBIAODEWUXINGTIAOJIANJINXINGSHEZHI, KEYICAIJIMAICHONGSHU、WENDU、YALI、SHIJIAN、SHUNSHIJILEIJILIULIANGDENGSHUJU。BIAODINGJIESHUHOU, CAIJIDEBIAOZHUNBIAOLEIJILIULIANGHESHURUBEICEBIAODELEIJILIULIANGJINXINGBIDUIJISUAN。

图3 标准表法流量仪表检定系统软件界面

TU3 BIAOZHUNBIAOFALIULIANGYIBIAOJIANDINGXITONGRUANJIANJIEMIAN

2.2、BIAOZHUNBIAOFALIULIANGBIAOZHUNZHUANGZHIDEKEXINGXINGFENXI:

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

pk10赛车冠军单双计划 BIAO1 YETIWOLUNLIULIANGJIZHUNQUEDUDENGJI

表1 液体涡轮流量计准确度等级

pk10赛车冠军单双计划   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。

pk10赛车冠军单双计划   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。

pk10赛车冠军单双计划 BIAO2 WOLUNLIULIANGJIXIAOZHUNJIEGUO

表2 涡轮流量计校准结果

BIAO3 WENDUBIANSONGQIXIAOZHUNJIEGUO

表3 温度变送器校准结果

BIAO4 YALIBIANSONGQIXIAOZHUNJIEGUO

表4 压力变送器校准结果

3、装置的不确定度分析:

pk10赛车冠军单双计划   GENJUBIAOZHUNBIAOFALIULIANGBIAOZHUNZHUANGZHIDEBUQUEDINGDUYAOQIU, DUIZHUANGZHIBUQUEDINGDUJINXINGFENXI, BIAOZHUNZHUANGZHIHECHENGBUQUEDINGDUCELIANGMOXINGWEI

计算公式

 

  SHIZHONG:u1——BIAOZHUNLIULIANGJIDINGDIANSHIYONGSHIALEIBUQUEDINGDU;

u2——JISHIQIDEALEIBIAOZHUNBUQUEDINGDU;

u3——JISHIQIDEBLEIBIAOZHUNBUQUEDINGDU;

pk10赛车冠军单双计划 u4——BIAOZHUNLIULIANGJIBUDAIPEITAOYIBIAOYIQIJIANDINGSHI

pk10赛车冠军单双计划 YINQIDELIULIANGCELIANGBUQUEDINGDU, DAIPEITAOYIBIAODEBIAOZHUNLIULIANGJIYINGDAIPEITAOYIBIAOYIQIJIANDING, FOUZEYINGKAOLVPEITAOYIBIAODEBUQUEDINGDU;

u5——BIAOZHUNLIULIANGJIJIANDINGHESHIYONGDELIUTITIAOJIANBUTONGYINQIDELIULIANGCELIANGBUQUEDINGDU;

pk10赛车冠军单双计划 u6——SHUJUCAIJI、XINHAOCHULI、SHUJUCHULIJITONGXINBUQUEDINGDUYINQIDELIULIANGCELIANGBUQUEDINGDU;

u7——JIANDINGBIAOZHUNLIULIANGJIDELIULIANGBIAOZHUNZHUANGZHIDEHECHENGBUQUEDINGDU

pk10赛车冠军单双计划   QIZHONG, BENZHUANGZHIZHONGLIULIANGJISUANYICAIYONGXMFL-7BIAOZHUNLIULIANGJISUANYI, YOUJIAOGAODEFENBIANLI。DUIYUSHUNSHILIANGZAILIULIANGCHUYU100~1 000 L/minSHI, FENBIANLIWEIBAIFENZHIYI (JI0.01) GEDANWEI, DUIMAICHONGWEI0.01 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。

pk10赛车冠军单双计划   DUIYUBIAOZHUNLIULIANGJICELIANGALEIBUQUEDINGDUu1DEJISUAN, DUIDINGDIANSHIYONGDELIULIANGJI, SHIYONGYIBIAOXISHUSHI, YOU

计算公式

 

  SHIZHONG:Si——DIiGEJIANDINGDIANALEIBIAOZHUNBUQUEDINGDU;

pk10赛车冠军单双计划   σKi——DIiGEJIANDINGDIANYIBIAOXISHUDEBIAOZHUNPIANCHA, 1/m3;

pk10赛车冠军单双计划   Ki——DIiGEJIANDINGDIANYIBIAOXISHUDEPINGJUNZHI, 1/m3BENZHUANGZHIBIAODINGGUANXIANZHIYOUYITAIBIAOZHUNBIAO, QIBIAOZHUNLIULIANGJIDEALEIBUQUEDINGDUu1,

计算公式

 

  GENJUWOLUNLIULIANGJIDEJIANDINGJILU, GETIAOBIAODINGGUANXIANZHONGBIAOZHUNWOLUNLIULIANGJIYOU: (S1) max=0.02%, GUQUu1=0.02%。

  GENJUYISHANGFENXI, BENZHUANGZHIBUQUEDINGDUWEI

计算公式

pk10赛车冠军单双计划  

pk10赛车冠军单双计划   SHIZHONG:u1=0.002%;

  u7——JIANDINGBIAOZHUNLIULIANGJIDELIULIANGBIAOZHUNZHUANGZHIDEHECHENGBUQUEDINGDU

4、结语:

  ZHONGDIANDUIZHUANGZHIZHIGUANDUANDEZHANGDUJINXINGXUANZE, QUEBAOBUTONGNIANDUXIA3#HANGKONGMEIYOUZAIJINRUWOLUNLIULIANGJIZHIQIANJUNYOUWENDINGDEJUNYUNDELIUDONGZHUANGTAI。DUIZHUANGZHIZHENGTIDEBUQUEDINGDUFENPEIJINXINGJISUAN, QUEDINGLEBIAOZHUNBIAO、WENDUBIANSONGQI、YALIBIANSONGQIDEXUANZEFANGAN。BENZHUANGZHIDEYANZHI, DADASUODUANLEJICHANGJIAYOUJIYIBIAOBIAODINGDESHIJIAN。ZHUANGZHITIJIXIAO、JIEGOUJIANDAN、CAOZUOFANGBIAN。BENZHUANGZHIDEYANJIUYOULIYUBIAOZHUNZHUANGZHIDEPUJI, DUILIULIANGJIDEYANFAYIJISHENGCHANJUYOUZHONGYAOYIYI。



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