Device for measuring pressure in two points of a fluid flow

Details Device for measuring pressure in two points of a fluid flow Device for measuring pressure in two points of a fluid flow

G - Physics

01

F

G01F 1/38 (2006.01) G01F 1/36 (2006.01) G01F 1/40 (2006.01)

Patent

CA 2438546

The invention concerns a device for measuring pressure in two points of a fluid flow, comprising: a frame (10) consisting of two plates (12, 14) comprising each two planar surfaces, one outer (12a, 14a) and the other inner (12b, 14b), and wherein one of the plates (12) is perforated with recess (22) closed by the other plate (14) to form an assembly of two chambers (28, 30) comprising two planar walls (24, 14b) parallel to the surfaces (12a, 14a) of the frame and a side wall (26) forming its periphery and a fluidic restriction channel (32) connecting the two chambers (28, 30) with each other; and means (16) for supplying a measurement of the pressure in each of the chambers (28, 30). In order to improve the accuracy of the measurement, the side wall (26) of the chambers (28, 30) is perpendicular to its two planar walls (24, 14b) and is configured such that the chambers (28, 20) are spindle-shaped.

Dispositif pour mesurer une pression en deux points d'un écoulement fluidique, comprenant: - un bâti (10) formé de deux plaques (12, 14) comportant chacune deux faces planes, l'une extérieure (12a, 14a) et l'autre intérieure (12b, 14b), et dans lequel l'une des plaques (12) est percée d'une creusure (22) fermée par l'autre plaque (14) pour former ensemble deux ahmbres (28, 30) comportant deux parois (24, 14b) planes parallèles aux faces (12a, 14a) du bâti et une paroi latérale (26) formant son pourtour ainsi qu'un canal de restriction fluidique (32) reliant les chambres (28, 30) entre elles, et - des moyens (16) pour fournir une mesure de la pression dans chacune des chambres (28, 30). Afin d'améliorer la précision de la mesure, la paroi latérale (26) des chambres (28, 30) est perpendiculaire à ses deux parois planes (24, 14b) et est conformée de manière à ce que les chambres (28, 30) soient fusiformes.

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