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[1]陈武新,赵刚.调节阀高频噪声对超声波计量的影响与对策[J].油气储运,2011,30(09):715-717.[doi:10.6047/j.issn.1000-8241.2011.09.021]
　Chen Wuxin and Zhao Gang.The impact of high frequency noise of regulating valve on ultrasonic metering and solution[J].Oil & Gas Storage and Transportation,2011,30(09):715-717.[doi:10.6047/j.issn.1000-8241.2011.09.021]
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调节阀高频噪声对超声波计量的影响与对策

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 30 期数: 2011年09期 页码: 715-717 栏目: 出版日期: 2011-09-25
Title:
The impact of high frequency noise of regulating valve on ultrasonic metering and solution
文章编号:
1000-8241(2011)09-0715-03
作者:
陈武新1; 赵刚2
1.中国石化天然气分公司，北京 100011；
?2.山东天然气管道有限责任公司，山东济南 250101
Author(s):
Chen Wuxin and Zhao Gang
Chen Wuxin：Sinopec Gas Company，Beijing，100011.
关键词:
天然气; 调节阀; 高频噪声; 超声波; 计量
Keywords:
natural gas; regulating valve; high frequency noise; ultrasonic; metering
分类号:
TE974
DOI:
10.6047/j.issn.1000-8241.2011.09.021
文献标志码:
A
摘要:
天然气超声波流量计在实际生产中常与调节阀组成调压计量串使用，由于天然气在节流过程中机械能转化为声能而产生高频噪声，其频率与超声波流量计工作频率相近，因此严重影响超声波流量计的正常工作。改造实践证明：调节阀的安装位置、降噪型调节阀的选用以及T 形头的安装均可能通过影响流量计在不计量状态下的增益系数Gain 和信噪比SNR，从而降低流量计的准确性和稳定性。调整调压计量工艺流程和轴流式调节阀的运行工况、选用非降噪型气体超声波流量计、增加流量计上下游直管段的长度、在气流反方向加装T 形头，均可以有效消除调节阀高频噪声对超声波计量的影响。
Abstract:
Natural gas ultrasonic flowmeter is often used with the “regulating metering train” consisted of regulating valves in gas pipeline.
High frequency noise was generated when mechanical energy was transferred to acoustic energy. The frequency is close to the
working frequency of ultrasonic flowmeter，which severely impacts the normal working condition of ultrasonic flowmeter. Modified
design revealed that the accuracy and stability of flowmeter were possibly reduced by the Gain and SNR of flowmeter in the
non-metering condition，which are influenced by the installation position of regulating valve，the use of denoised type regulating
valve and the installation of T-shaped joint. It is considered that adjusting the pressure metering procedure and the working
condition of axial-flow regulating valve，adopting non-denoised type gas ultrasonic flowmeter，elongating the straight pipe length
in the upstream and downstream of ultrasonic flowmeter and adding T-shaped joint along the reversal direction of gas flow can
effectively eliminate the impact of high frequency noise on ultrasonic metering.

参考文献/References:

[1] 陈召国，唐黔湘. 溢流阀结构及噪声研究[J]. 液压与气动，2002（2）：40-41.
[2]国家原油大流量计量站成都天然气流量分站.GB/T 18604－2001 用气体超声波流量计测量天然气流量[S]. 北京：中国标
准出版社，2001.

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备注/Memo

陈武新，工程师，1971 年生，2006 年毕业于中国石油大学（华东）油气储运专业，现主要从事天然气的开采集输、长输管道
的运行和计量管理工作。电话：010-51586305；Email：ccwtn@139.com?（收稿日期：2011-04-28）

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