Turbine meter with a rotor having accuracy enhancing rotor blade

Details Turbine meter with a rotor having accuracy enhancing rotor blade Turbine meter with a rotor having accuracy enhancing rotor blade

1999-06-18

2000-05-23

Patel, Harshad

Measuring and testing

Volume or rate of flow

Using turbine

7386183, 416223R, G01F 105, B63H 126

Patent

active

060653523

ABSTRACT:
A turbine meter used for measuring the volume of fluid flowing through a conduit includes an elongated housing having an upstream end and a downstream end and a rotor mounted within the housing. A plurality of turbine blades are mounted on the rotor at an angle with respect to the axis of rotation of the rotor which causes each of the rotor blades to have a high pressure surface which faces toward the upstream end of the housing. Each of the rotor blades also has a trailing edge closest to the downstream end of the housing. An extension is included at approximately the trailing edge on the high pressure surface of at least one and preferably a plurality of the rotor blades. The extension has a length and forms an angle with respect to the high pressure surface of the rotor blade on which it is mounted which causes the percentage of error of the accuracy of the meter across a chosen operating range of the meter to be within predetermined limits.

REFERENCES:
patent: 1669315 (1928-05-01), Wiggins
patent: 1679557 (1928-08-01), Bailey
patent: 4359311 (1982-11-01), Benesh
patent: 5341686 (1994-08-01), Chai
patent: 5636178 (1997-06-01), Ritter
patent: 5766487 (1998-06-01), Park
patent: 5813837 (1998-09-01), Yamamoto et al.
patent: 5866824 (1999-02-01), Schieber

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