Gear flow sensor

The utility model discloses a gear flow sensor which comprises a shell, a first gear and a second gear, the first gear and the second gear are rotationally connected in the shell, the first gear and the second gear are meshed with each other, a cavity with a fixed volume is defined by the first gear, the second gear, the shell and the first gear, and a fluid inlet and a fluid outlet are formed in the shell respectively. The gear flow sensor further comprises an inductive sensor, and the inductive sensor is arranged in the shell or outside the shell and used for detecting the number of turns of rotation of the first gear or the second gear. The fluid flow measuring device is applied to the field of fluid flow measurement, the accuracy of fluid flow measurement is remarkably improved, the structure is simple, the occupied space is small, meanwhile, parts have interchangeability, replacement is convenient and rapid, and the tedious replacement process is avoided. 本实用新型公开了一种齿轮流量传感器，包括壳体以及转动连接在所述壳体内的第一齿轮与第二齿轮，所述第一