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低压容器内含溢流槽的流体标准检定装置

         

摘要

For implementing standard calibration of the fluid, the method using water tower features height restriction, while the method of pressure stabilized vessel is in low calibration accuracy, aiming at these problems, a novel fluid standard calibration facility is designed. With this facility, overflow sink is adopted in the sealed low pressure vessel to obtain stable water level, and stable air pressure is acted on the stable water surface. By using dynamic method without diverter, the calibration is implemented by this facility; in addition, some measures to ensure calibration accuracy are adopted. The facility possesses the same advantage of flow stability as the water tower; and the same advantage of high Reynolds number as the pressure stabilized vessel. Also it offers high calibration efficiency while the construction cost is lower than water tower and covers smaller area. The experimental data of the prototype indicate that the accuracy is up to 0. 1 % and meets the design requirement.%针对水塔法水塔高度受限而容器稳压法检定精度不高的问题,设计了一种新型流体标准检定装置.该装置在密闭低压容器中采用溢流池获得稳定液位,并在其稳定液面上作用稳定气压;使用无需换向器的动态法进行检定,并采取措施保证检定精度.该装置兼有水塔流量稳定性和容器稳压法高雷诺数的优点,且检定效率高,造价和占地面积也比水塔法少.样机试验数据表明,其检定精度可达0.1%,符合设计要求.

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