| 摘要 |
FIELD: physics. ^ SUBSTANCE: invention can be applied in some measurement tasks requiring high precision of fluid and gas flow rate measurement. The device of fluid and gas flow rate measurement involving a floating weight includes mobile cylindrical body placed into a cylindrical gauge chamber with a small gap and possibility of free axial movement between lower and upper supports. The body has an internal channel for redirection of measured medium flow coming from a nozzle at 90 degrees angle from axial into radial fan direction, with such input and output hole size ratio as to sustain equal static pressure at the input and output. At that, mobile body axis is vertical, the flow comes upwards bottom, and position of the mobile body depends on the correlation of its weight and the force applied to it by the flow and depending on the flow rate. Flow rate is registered precisely in the equilibrium position of the mobile body, when it is suspended between lower and upper supports with electrodes mounted in them and connected to an electric circuit including power source and current registration device. The electrodes are closed by the ends of mobile body, so that the current value changes if the contact with electrodes is broken or established. Besides, the current passing through upper and lower electrodes has different sign by registration. ^ EFFECT: simplified construction and improved precision. ^ 3 cl, 1 dwg |
