热式质量流量计在核电仪用气源管路中的应用
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摘要
核电机组正常运行过程中需要控制好核岛内外差压,而岛内气动控制设备的用气量是影响内外差压的重要因素,因此需要对该用气量进行准确而稳定的计量。原涡轮流量计在使用过程中波动比较大,不能满足现场要求。本文详细论述了热式质量流量计在核岛仪用气源系统中的改造过程,通过改造前后测量值曲线的对比,可以发现热式质量流量在微小流量工况下的稳定性、精确性等指标均优于涡轮流量计。
Gas consumption for pneumatic control equipment is a very important factor to influence the internal and external differential pressure of nuclear island. It must be controlled strictly on operation, so the gas flux should be measured accurately. The turbine flow meter original used can't meet the requirement because the actual value is fluctuating. This article detailed describes the application of the thermal mass flow in instrument compressed air distribution system. Through comparing the final measure curve, the thermal mass flow is found better than the turbine mass flow in stability and maintenance-free.
Gas consumption for pneumatic control equipment is a very important factor to influence the internal and external differential pressure of nuclear island. It must be controlled strictly on operation, so the gas flux should be measured accurately. The turbine flow meter original used can't meet the requirement because the actual value is fluctuating. This article detailed describes the application of the thermal mass flow in instrument compressed air distribution system. Through comparing the final measure curve, the thermal mass flow is found better than the turbine mass flow in stability and maintenance-free.
引文
[1]巩爱华,马金权,朱成伟.热式气体质量流量计原理分析及其应用[J].齐齐哈尔大学学报,2002,(3):75.
[2]林宏杰.热式流量计、热式流量开关的原理及应用[J].仪表技术与传感器,2001(9):45-46.
[3]黄水清.FCI公司的热式质量流量计的特点及应用[J].自动化仪表,2003,(1):47-48.
[4]彭聪,修吉平.新型热式气体质量流量计的研制[J].自动化技术与应用,2006,(12):57-58.
[5]余莉,朱春玲,孙卫平.热式质量流量计在多通道管路系统中的应用[J].传感器技术,2005,(1):81-83.
[6]时慧,徐静勇,张瑞林等.热式质量流量计的研制[J].中国计量,2011,(9):85-87.
[2]林宏杰.热式流量计、热式流量开关的原理及应用[J].仪表技术与传感器,2001(9):45-46.
[3]黄水清.FCI公司的热式质量流量计的特点及应用[J].自动化仪表,2003,(1):47-48.
[4]彭聪,修吉平.新型热式气体质量流量计的研制[J].自动化技术与应用,2006,(12):57-58.
[5]余莉,朱春玲,孙卫平.热式质量流量计在多通道管路系统中的应用[J].传感器技术,2005,(1):81-83.
[6]时慧,徐静勇,张瑞林等.热式质量流量计的研制[J].中国计量,2011,(9):85-87.