Design and Application of Deltaflow under Micro Differential-Pressure Measurement on ACME Facility
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摘要: 对德尔塔巴流量计在先进堆芯冷却机组试验台架(ACME)破口分离和测量系统及非能动堆芯冷却系统中的微差压关键流量测量技术进行分析,并对应用效果进行了评估。通过改进德尔塔巴流量计的引压结构,证明流量计可以工作在常压微差压的测量工况下,水流量计零点偏移可维持在0.005 kPa以内。通过与超声波流量计的精度对比测试,证明德尔塔巴流量计在破口分离和测量系统中可获得较好的测量效果。在非能动堆芯冷却系统(PXS)中,主要对德尔塔巴流量计在小流量下的测量技术进行了研究,通过与超声波流量计的精度对比测试,证明德尔塔巴流量计在其计算书标明的最小可测流量下仍具备一定的测量能力,运行经验表明其测量小流量的能力最终受差压变送器零点偏移现象所决定。
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关键词:
- 德尔塔巴差压流量计 /
- 先进堆芯冷却机组试验台架(ACME) /
- CAP1400
Abstract: Key flowrate measurement technology under micro differential pressure on ACME facility BAMS and PXS was studied,and its application effect was evaluated.Through the improvement of the installation structure of Deltaflow,it is proved that Deltaflow could be used in low-pressure micro differential pressure measurement,where the zero-drift of water flowmeters can be limited in 0.005 kPa.By comparison with the ultrasound flowmeter,it was verified that Deltaflow could obtain good measurement on ACME BAMS.In PXS,the ability of Deltaflow under small flow rate was tested.Through comparison with the ultrasound flowmeter,it was testified that below the minimal flow rate on calculation report,Deltaflow still has certain measurement accuracy,which depends on the zero-drift of differential pressure transmitter.-
Key words:
- Deltaflow /
- ACME facility /
- CAP1400
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