Flow measuring device

Details Flow measuring device Flow measuring device

1985-08-19

1987-04-14

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring swirl rate imparted by static means

7386179, G01F 105

Patent

active

046568735

ABSTRACT:
A paddle-wheel-type flow measuring device comprises a housing having inlet and outlet passages therein, a paddle-wheel rotatably mounted in the housing, and a sensor for sensing the rate of rotation of the paddle-wheel in the housing. The inlet passage of the housing is positioned so that when a fluid flowing in substantially perpendicular relation to the axis of the paddle-wheel passes through the inlet passage, it impinges directly on only one end portion of the paddle-wheel and the outlet passage is positioned so that it can only directly receive fluid from the axially opposite end portion of the paddle-wheel. Hence, a fluid passing through the housing must circulate internally with the paddle-wheel before it can pass out the outlet passage so that a proportionally greater rotational force is applied to the paddle-wheel by the fluid. As a result, the device can be effectively utilized for measuring relatively low fluid flow rates, even in relatively small diameter pipe sections.

REFERENCES:
patent: 34060 (1862-01-01), Isham
patent: 644487 (1900-02-01), Zumkeller
patent: 3162422 (1964-12-01), Renfrew
patent: 4131017 (1978-12-01), Bach
patent: 4489616 (1984-12-01), Priddy
patent: 4507960 (1985-04-01), Hufnagel

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