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[1]牛斌,吕俊.浙江LNG接收站外输计量控制要点[J].油气储运,2015,34(9):1023-1026.[doi:10.6047/j.issn.1000-8241.2015.09.022]
　NIU Bin,LYU Jun.Key points for control over sendout metering in Zhejiang LNG Terminal[J].Oil & Gas Storage and Transportation,2015,34(9):1023-1026.[doi:10.6047/j.issn.1000-8241.2015.09.022]
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浙江LNG接收站外输计量控制要点

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 34 期数: 2015年第9期 页码: 1023-1026 栏目: 出版日期: 2015-09-25
Title:
Key points for control over sendout metering in Zhejiang LNG Terminal
作者:
牛斌;  吕俊

中海石油气电集团有限责任公司浙江贸易分公司, 浙江宁波315800

Author(s):
NIU Bin;  LYU Jun

Zhejiang Trading Branch, CNOOC Gas and Power Group, Ningbo, Zhejiang, 315800

关键词:
LNG接收站; 计量橇; 超声流量计; 声速核查
Keywords:
LNG terminal; metering skid; ultrasonic flowmeter; acoustic check
分类号:
TE832
DOI:
10.6047/j.issn.1000-8241.2015.09.022
摘要:

外输计量直接影响LNG贸易交接的顺利进行,浙江LNG接收站选用超声流量计组成的计量橇座系统,配置取样分析监控设备,能够保证计量系统的整体精度,满足能量交接需要。介绍了浙江LNG接收站计量系统的组成及流量计算过程,详细阐述了计量系统在设计及运营阶段控制要点。结果表明:通过周期性开展流量计使用中检定及声速核查,及时判定计量系统“健康”状况,既方便操作人员及时采取防御性维护,又可提高检定周期内计量仪表的精确度,减少贸易纠纷。同时,给出了超声流量计常见问题及对策,对今后投产的接收站计量站场建设及运营维护有一定指导意义。

Abstract:

Sendout metering may directly affect the success of delivery in LNG trading. In the Zhejiang LNG Terminal, the metering skid system composed of ultrasonic flowmeters is used. With the support of sampling, analyzing and monitoring devices, the system can guarantee overall metering accuracy to satisfy demands of relevant trades. This paper reviews the composition and flowrate calculation procedures of the metering system in the Zhejiang LNG Terminal. Key points for design and operation of the metering system are summarized. The results show that periodic calibration and acoustic checks shall be performed to determine “health” conditions of the metering system in timely manner. These measures can facilitate defensive maintenance by operators and enhance accuracy of instrument accuracy within valid calibration period to minimize trade disputes. This paper presents the common problems and relevant countermeasures of ultrasonic flowmeter to provide essential guidance for construction, operation and maintenance of metering system in LNG terminals.

参考文献/References:

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备注/Memo

收稿日期:2014-9-4;改回日期:2015-9-8。
作者简介:牛斌,助理工程师,1990年生,2012年毕业于中国石油大学(华东)油气储运工程专业,现主要从事液化天然气卸船计量、天然气外输计量及气化站场设计与配管工作。Tel: 15968979996, Email: niubin@cnooc.com.cn

更新日期/Last Update: 1900-01-01