高压液体流量标准装置研制

为解决民用飞机高压液压油流量计校准问题,研制了高压液压油流量标准装置,标准装置采用高压柱塞泵提供流量源,通过变频调速和比例控制阀配合调节的方法实现流量装置的流量和压力宽范围调节,标准装置以活塞式体积管作为主标准器,实现了高压条件下的流量计校准。利用该标准装置对圆柱齿轮流量计在变压工况下进行校准试验,高压工况下流量计仪表系数与常压工况相差超过5%,证明开展高压变压下流量计计量性能及修正方法研究的重要性,该标准装置的建成为高压下流量计校准及计量性能研究提供了有效的手段,具有很高的实用价值。

Development of High Pressure Fluid Flow Standard Device

In order to solve the calibration problem of high-pressure hydraulic oil flowmeter for civil aircraft, a high-pressure hydraulic oil flow standard device is developed. The standard device uses a high-pressure plunger pump to provide flow source. The flow rate and pressure of the flow device can be adjusted in a wide range by means of frequency conversion speed regulation and proportional control valve. A piston-type volume tube is used as the main standard in the standard device to realize the flowmeter calibration under high-pressure conditions. The calibration test of cylindrical gear flowmeter under variable pressure condition is carried out by using this standard device. The difference between the flowmeter coefficients under high pressure condition and atmospheric pressure condition is more than 5%, which proves the importance of the research on flowmeter measurement performance and correction method under high pressure and variable pressure. The establishment of this standard device provides an effective means for flowmeter calibration and measurement performance research under high pressure, and it has practical value.