Pipeline flow measurement proving system

Details Pipeline flow measurement proving system Pipeline flow measurement proving system

1984-10-29

1986-01-28

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01F 2500

Patent

active

045663076

ABSTRACT:
A pipeline flow measurement proving system has a custody transfer insertion turbine meter mounted at a first location on a fluid pipeline. A proving insertion turbine flow meter is mounted at a second location on the pipeline upstream from the custody meter at a distance of approximately ten diameters of the pipeline. This offset spacing reduces the fluid turbulence which may be produced by the turbine head of the proving meter. The proving meter is calibrated against a standard at the National Bureau of Standards. Each of the flow meters produces a pulse signal which is proportional to the rotation of the corresponding turbine head. The calibration is carried out by counting the number of pulses produced by the two meters during a selected time period. The ratio of the counts of the pulses comprises a calibration constant which is utilized by a custody transfer flow computer for producing a flow measurement. The proving insertion turbine flow meter can be utilized to calibrate a plurality of custrody meters or can be utilized as a backup for the custody meter.

REFERENCES:
patent: 2958218 (1960-11-01), Hill
patent: 3138013 (1964-06-01), Smith
patent: 3187551 (1965-06-01), Hill
patent: 3711689 (1973-01-01), Park
patent: 4114440 (1978-09-01), Stapler
patent: 4152936 (1979-05-01), Boykin

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