Turbine meter

• US 3,996,800 A
• Filed: 05/17/1974
• Issued: 12/14/1976
• Est. Priority Date: 05/17/1974
• Status: Expired due to Term

• Current Assignee: Invalco, Inc.
• Original Assignee: Combustion Engineering Incorporated (ABB Limited)
• Inventors: Rosso, John B.
• Primary Examiner(s): Martin, Jr., William D.
• Assistant Examiner(s): Little, Willis
• Application Number:
  US05/470,891
• Time in Patent Office: 942 Days
• Field of Search: 73/231 R, 73/229, 73/231 M
• US Class Current: 73/861.78
• CPC Class Codes: G01F 1/115 with magnetic or electromagnetic coupling to the indicating device

Abstract

The blades of a turbine meter are shown cutting the lines of force generated by a plurality of electromagnetic pick-up units positioned about the circle of blades. The pick-up units are connected in an electric network which amplifies, shapes and multiplies the voltage pulses generated by the blades and pick-up units and then combines the pulses into a single train representing the fluid flowing through the turbine meter.

Claims

1. A system utilizing a turbine meter for measuring fluid flow, including,

a turbine meter having a plurality of blades arranged to be rotated from a common axis by fluid flow to be measured,

a plurality of electromagnetic pick-up units positioned about the circle of the blade tips said plurality of blades intersecting magnetic lines of force generated by said pick-up units to produce pulses,

a plurality of circuits corresponding in number to said plurality of pick-up units, each of said circuits connected to a corresponding one of said pick-up units to multiply said pulses and provide a predetermined total number of pulses per volume unit of fluid flowing through the meter,

and means connected to the circuit of each pick-up unit to combine their multiplied pulses into a single train and manifest the train quantitatively as the flow of fluid.

2. The system of claim 1 in which,

there are three electromagnetic pick-up units positioned equal distances from each other about the circle of the blade tips.

3. The system of claim 1 in which,

each circuit connected to each pick-up unit amplifies and squares the pulses before multiplying the pulses.