铠装铂电阻液位测量传感器研究

Study on Water Level Detector Composed of Encoded Thermal Resistance

压力容器内的水位是反应堆运行中的重要参数,基于发热体在液相和汽相介质中放热系数的显著差异,本文提出了一种由铠装铂电阻组成的液位测量传感器,并给出了理论分析结果和0.1～3.0MPa压力范围内的试验结果.结果表明,该传感器原理正确,结构可行,性能可靠.

The water level in a nuclear reactor pressure vessel is an important operating parameter. Based on the differences of heat transfer coefficient between liquid phase and gas phase, a level detector, which includes encoded thermal resistances, was developed. The monitoring principle, theory analysis and experimental results under pressure of 0.l-3.0 MPa were described. The analysis and experiments showed that the new system is correct in principle, reliable and feasible in structure for monitoring the water level in NHR-200 reactor and other vessels.