Channel flow measuring device and measuring method

The invention discloses a channel flow measuring device and a measuring method. The measuring device comprises a measuring cylinder, a water accumulation area is formed in the column body and the measuring cylinder. The device is characterized in that the cross section of the measuring cylinder is a closed curve formed by an arc line and a curve provided with a conical tip, the connection portionof the arc line and the curve provided with the conical tip is in smooth transition, the conical tip faces the water flow direction, the side wall opposite to the side wall, where the conical tip is located, of the measuring cylinder is an upstream face, and a plurality of through holes are formed in the upstream face in the axial direction of the measuring cylinder. The disclosed measurement method uses the measurement device provided by the invention for measurement. The appearance of the measuring cylinder is a fish-shaped curve, the measuring cylinder is a novel water measuring tank with more optimized hydraulic p