US 6,471,487 B2 · Fluid delivery system

Abstract

The fluid delivery system comprises a Coriolis mass flowmeter, a pump, a recirculation valve, and/or a back-pressure valve. The fluid delivery system prevents the measurement of a multiphase fluid flow without the need for an air eliminator and strainer. The Coriolis mass flowmeter measures the density value of the fluid product being delivered from a fluid source to a destination. The Coriolis mass flowmeter compares the measured density value to at least one of an upper threshold density value and a lower threshold density value. If the measured density value exceeds the at least one of the upper density value or the lower density value, the flowmeter automatically shuts down the pump and closes the back-pressure valve to stop the delivery of the fluid product from the fluid source to the destination to prevent the measurement of a multiphase fluid flow.

Claims18

Dependent claims

A fluid delivery system for measuring a substantially pure fluid product flow and preventing measurement of a multiphase fluid flow during delivery of a fluid product from a fluid source to a destination, the fluid delivery system comprising:

a pump connected between the fluid source and the destination for delivering the fluid product from the fluid source to the destination;
a Coriolis mass flowmeter connected between the pump and the destination and configured to detect a beginning of the multiphase fluid flow as the fluid product is delivered from the fluid source to the destination;
a back-pressure valve connected between the Coriolis mass flowmeter and the destination and configured to open or close under the control of the Coriolis mass flow meter;
means within the Coriolis mass flowmeter for controlling the pump in response to detecting the beginning of the multiphase fluid flow to cause the pump to stop delivery of the fluid product from the source to the destination;
and
means within the Coriolis mass flowmeter for controlling the back-pressure valve in response to detecting the beginning of the multiphase fluid flow to cause the back-pressure valve to close, wherein the Coriolis mass flowmeter uses the pump controlling means and the back-pressure valve controlling means to prevent the measurement of the multiphase fluid flow by stopping delivery of the fluid product in response to detecting the beginning of the multiphase fluid flow.

3 more elements

A method for measuring a fluid product flow during delivery of a fluid product from a fluid source to a destination, the method comprising:

delivering a fluid product from the fluid source to the destination;
detecting a beginning of a multiphase fluid flow as the fluid product is delivered from the fluid source to the destination;
providing a first output signal to a pump to stop delivery of the fluid product in response to detecting the beginning of the multiphase fluid flow;
and
providing a second output signal to a back-pressure valve to provide back-pressure in response to detecting the beginning of the multiphase fluid flow.

2 more elements

Dependencies are inferred from the claim text.

Fluid delivery system

Life of this patent

Fluid delivery system

Life of this patent

Abstract

Claims18