| 摘要 |
FIELD: physics. ^ SUBSTANCE: measuring diaphragm has a diaphragm fitted on a pipe and covering the cross-section of the pipe. The diaphragm has a plurality of holes such that the flow of a fluid medium through each hole has the same Reynolds number. The plurality of holes includes a centre hole in the middle of the diaphragm and a plurality of peripheral holes around the centre hole. The centre hole and the plurality of holes satisfy the formula Rc1Vc1=RchVch; in which Rc1 is the radius of the centre hole, Vc1 is the flow rate in the pipe at the centre of the centre hole, Rch is the distance between the centre of the diaphragm and centres of peripheral holes, Vch is the flow rate in the pipe at the centre of the peripheral holes. ^ EFFECT: high accuracy of measuring process parameters, reduced turbulence and force, as well as flow pressure of the fluid medium, high linearity and reproducibility of measurements and reduced pressure loss. ^ 7 cl, 14 dwg |
