The principle and calibration of the third gear flow- meter

At present, the domestic development of the gear flow-meter is far behind the developed countries, especially in the micro gear flow-meter. This paper proposes a typical structure named the third gear flow-meter. The structural characteristics and working principle of the third gear flow-meter was introduced in detail, the prototype of the third gear flow-meter was designed and processed, and the calibration tests and pressure experiments of the third gear flow-meter prototype was made at last. We can draw that the three gear flow-meter can be used in hydraulic system pressure range is less than 25Mpa, the flow rate was 0.15 similar to 0.2m(3)/h can meet the high requirements of the stability of measurement, and the measurement accuracy in the whole flow range is 0.2 class. This article provides a reliable experimental data for the design of the micro gear flow-meter.