Air volume measuring device

The invention provides an air volume measuring device, relates to the technical field of measurement, and solves technical problems that in the prior art, an L-shaped air volume measuring device and an S-shaped air volume measuring device adopt single-point pressure tapping, and the measurement result has large deviation. The air volume measuring device comprises a total pressure pipe and a staticpressure pipe, wherein the full-pressure pipe and the static pressure pipe are parallel to each other and are fixed in an air inlet pipeline or a box body, at least two full-pressure measuring holesare formed in the full-pressure pipe, at least two static pressure measuring holes are formed in the static pressure pipe, and the full-pressure measuring holes and the static-pressure measuring holesare respectively opposite to the air flow and back to the air flow. The air volume measuring device is advantaged in that the average pressure of the whole section can be obtained by taking the pressure from multiple points an