Measuring device provided with rotary pistons

Details Measuring device provided with rotary pistons Measuring device provided with rotary pistons

G - Physics

01

F

G01F 3/08 (2006.01) G01F 3/10 (2006.01)

Patent

CA 2223320

Measuring device for measuring the flow rate of a gas flow or liquid flow by means of a rotary piston device consisting of two rotary pistons which are placed in a pipe section and are mounted in such a way that they rotate about a rotary shaft, which rotary pistons are placed relative to each other and relative to the pipe section in such a way that by interaction with each other they shut off the pipe section. During the rotation the two rotary pistons always remain in contact with the wall of the pipe section at one side and with each other at the other side, a quantity of gas or liquid being allowed through every turn. The measuring device is characterized in that it consists of a number of parallel branches, with a rotary piston device accommodated in each branch, the rotary piston devices being synchronized with each other by means of synchronization means in such a way that the flow rate is approximately constant.

Compteur à pistons rotatifs pour mesurer le débit d'un gaz ou d'un liquide. Comprend deux pistons placés dans une section de tuyau et montés de façon à tourner autour d'un arbre rotatif. Étant donné la position des pistons en regard de l'un et de l'autre et en regard de la section de tuyau, l'interaction d'un piston avec l'autre permet de fermer la section du tuyau. Au cours de leur rotation, les deux pistons rotatifs demeurent toujours en contact avec la paroi de la section du tuyau sur un côté; ils demeurent également en contact entre eux de l'autre coté et à chaque révolution ils laissent passer un volume donné de gaz ou de liquide. Le compteur se distingue par le fait qu'il se compose d'un certain nombre d'embranchements parallèles et qu'un piston rotatif est logé à l'intérieur de chacun d'eux. Les pistons rotatifs sont tous synchronisés entre eux par un dispositif de synchronisation, afin de maintenir le débit à un niveau à peu près .

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