| 摘要 |
FIELD: instrument making. ^ SUBSTANCE: invention is related to measurement equipment and may be used to measure flow rate of fluid mediums by pressure difference. Device comprises tubular body inbuilt in pipeline, inlet and outlet cylindrical portions of which are equal to diametres of pipeline. Between inlet and outlet portions there is a metering section, which is created by direct and reverse cone-shaped measurement channels. diametres of smaller bases of direct and reverse cone-shaped channels are equal to diametres of inlet and outlet cylindrical sections accordingly. Sides of direct and reverse cone-shaped channels with lower bases are connected accordingly with inlet and outlet cylindrical sections. Larger bases of direct and reverse cone-shaped channels have equal diametres and are connected to each other. Besides length of direct cone-shaped channel exceeds length of reverse cone-shaped channel four times. diametres of larger bases of direct and reverse cone-shaped channels exceed diametres of their smaller bases 1.6 times. In cross sections of tubular body there are holes with the first and second nozzles for connection of pressure measurement facilities. At that the first nozzles are provided in area of connection of larger bases of direct and reverse cone-shaped channels, and the second nozzles are provided in outlet cylindrical portion. ^ EFFECT: higher accuracy of measurements. ^ 1 dwg |
