Single input, multiple output flow meter

• US 7,472,606 B2
• Filed: 02/23/2005
• Issued: 01/06/2009
• Est. Priority Date: 02/23/2005
• Status: Active Grant

• Current Assignee: Micro Motion Incorporated (Emerson Electric Company)
• Original Assignee: Micro Motion Incorporated (Emerson Electric Company)
• Inventors: Seddon, Stephen, Shanahan, Eugene M., Jones, Steven M., Stack, Charles Paul
• Primary Examiner(s): THOMPSON, JEWEL VERGIE
• Application Number:
  US11/816,753
• Publication Number:
  US 20080257065A1
• Time in Patent Office: 1,413 Days
• Field of Search: 738/613.55, 738/613.56, 738/613.57, 73/13.5
• US Class Current: 73/861.355
• CPC Class Codes: G01F 1/8409 constructional details
• CPC Class Codes: G01F 1/8413 means for influencing the flowmeter's motional or vibrational behaviour, e.g., conduit support or fixing means, or conduit attachments
• CPC Class Codes: G01F 1/8418 motion or vibration balancing means
• CPC Class Codes: G01F 1/8477 with multiple measuring conduits
• CPC Class Codes: G01F 1/8495 with multiple measuring conduits
• CPC Class Codes: G01F 15/185 Connecting means, e.g. bypass conduits

Abstract

A single input, multiple output flow meter (200) is provided. The flow meter (200) includes an intake conduit (202) and a flow divider (203). The flow meter (200) further includes a first flow sensor element (204) coupled to the flow divider (203), including a first output conduit (206), and is configured to generate a first flow signal. The flow meter (200) further includes at least a second flow sensor element (205) coupled to the flow divider (203), including a second output conduit (207), and is configured to generate a second flow signal. The input flow can be metered through the first output conduit (206) by the first flow sensor element (204), can be metered through the second output conduit (207) by the second flow sensor element (205), or can be simultaneously metered through both the first output conduit (206) by the first flow sensor element (204) and through the second output conduit (207) by the second flow sensor element (205).

Claims

1. A single input, multiple output flow meter (200), comprising:

an intake conduit (202) adapted for receiving a fluid flow;

a flow divider (203) coupled to the intake conduit (202), with the flow divider (203) dividing the fluid flow into at least a first flow and a second flow;

a first flow sensor element (204) coupled to the flow divider (203) and including a first output conduit (206) and configured to generate a first flow signal corresponding to the first flow; and

at least a second flow sensor element (205) coupled to the flow divider (203) and including a second output conduit (207) and configured to generate a second flow signal corresponding to the second flow;

wherein the input flow can be metered through the first output conduit (206) by the first flow sensor element (204), can be metered through the second output conduit (207) by the second flow sensor element (205), or can be simultaneously metered through both the first output conduit (206) by the first flow sensor element (204) and through the second output conduit (207) by the second flow sensor element (205).

2. The flow meter (200) of claim 1, wherein the first flow sensor element (204) and the second flow sensor element (205) comprise Coriolis flow meter sensor elements.

3. The flow meter (200) of claim 1, with the fluid flow comprising a fuel or an alternative fuel, such as compressed natural gas (CNG) or liquefied petroleum gas (LPG).

4. The flow meter (200) of claim 1, further comprising a casing (201) that includes the flow divider (203), the first flow sensor element (204), the second flow sensor element (205), at least part of the intake conduit (202), at least part of the first output conduit (206), and at least part of the second output conduit (207).

5. The flow meter (200) of claim 1, wherein the flow divider (203) divides the fluid flow into the first flow and the second flow and wherein an angle between the first flow and the second flow is about forty-five degrees.

6. The flow meter (200) of claim 1, wherein the flow divider (203) divides the fluid flow into the first flow and the second flow and wherein an angle between the first flow and the second flow is about ninety degrees.

7. The flow meter (200) of claim 1, with the first flow sensor element (204) and the second flow sensor element (205) comprising:

at least one first flow conduit (103a) for transporting the first flow;

at least one second flow conduit (103b) for transporting the second flow;

a first driver (104a) for vibrating the at least one first flow conduit (103a);

a second driver (104b) for vibrating the at least one second flow conduit (103b);

two or more first pickoff sensors (105a) and (105a′

) for measuring the resulting vibratory motion of the at least one first flow conduit (103a) and generating the first flow signal; and

two or more second pickoff sensors (105b) and (105b′

) for measuring the resulting vibratory motion of the at least one second flow conduit (103b) and generating the second flow signal.

8. The flow meter (200) of claim 1, further comprising meter electronics (20) that receives the first flow signal and the second flow signal and generates a corresponding first fuel flow measurement and a corresponding second fuel flow measurement.

9. A single input, multiple output flow meter (200), comprising:

an intake conduit (202) adapted for receiving a fluid flow;

a flow divider (203) coupled to the intake conduit (202), with the flow divider (203) dividing the fluid flow into at least a first flow and a second flow;

a first flow sensor element (204) coupled to the flow divider (203) and including a first output conduit (206) and configured to generate a first flow signal corresponding to the first flow;

at least a second flow sensor element (205) coupled to the flow divider (203) and including a second output conduit (207) and configured to generate a second flow signal corresponding to the second flow;

meter electronics (20) that receives the first flow signal and the second flow signal and generates a corresponding first fuel flow measurement and a corresponding second fuel flow measurement; and

a casing (201) that includes the flow divider (203), the first flow sensor element (204), the second flow sensor element (205), the meter electronics (20), at least part of the intake conduit (202), at least part of the first output conduits (204), and at least part of the second output conduit (205);

wherein the input flow can be metered through the first output conduit (206) by the first flow sensor element (204), can be metered through the second output conduit (207) by the second flow sensor element (205), or can be simultaneously metered through both the first output conduit (206) by the first flow sensor element (204) and through the second output conduit (207) by the second flow sensor element (205).

10. The flow meter (200) of claim 9, wherein the first flow sensor element (204) and the second flow sensor element (205) comprise Coriolis flow meter sensor elements.

11. The flow meter (200) of claim 9, with the fluid flow comprising a fuel or an alternative fuel, such as compressed natural gas (CNG) or liquefied petroleum gas (LPG).

12. The flow meter (200) of claim 9, wherein the flow divider (203) divides the fluid flow into the first flow and the second flow and wherein an angle between the first flow and the second flow is about forty-five degrees.

13. The flow meter (200) of claim 9, wherein the flow divider (203) divides the fluid flow into the first flow and the second flow and wherein an angle between the first flow and the second flow is about ninety degrees.

14. The flow meter (200) of claim 9, with the first flow sensor element (204) and the second flow sensor element (205) comprising:

at least one first flow conduit (103a) for transporting the first flow;

at least one second flow conduit (103b) for transporting the second flow;

a first driver (104a) for vibrating the at least one first flow conduit (103a);

a second driver (104b) for vibrating the at least one second flow conduit (103b);

two or more first pickoff sensors (105a) and (105a′

) for measuring the resulting vibratory motion of the at least one first flow conduit (103a) and generating the first flow signal; and

two or more second pickoff sensors (105b) and (105b′

) for measuring the resulting vibratory motion of the at least one second flow conduit (103b) and generating the second flow signal.

15. A method of forming a single input, multiple output flow meter (200), the method comprising:

providing an intake conduit (202) adapted for receiving a fluid flow;

providing a flow divider (203) coupled to the intake conduit (202), with the flow divider (203) dividing the fluid flow into at least a first flow and a second flow;

providing a first flow sensor element (204) coupled to the flow divider (203) and including a first output conduit (206) and configured to generate a first flow signal corresponding to the first flow; and

providing at least a second flow sensor element (205) coupled to the flow divider (203) and including a second output conduit (207) and configured to generate a second flow signal corresponding to the second flow;

wherein the input flow can be metered through the first output conduit (206) by the first flow sensor element (204), can be metered through the second output conduit (207) by the second flow sensor element (205), or can be simultaneously metered through both the first output conduit (206) by the first flow sensor element (204) and through the second output conduit (207) by the second flow sensor element (205).

16. The method of claim 15, wherein the first flow sensor element (204) and the second flow sensor element (205) comprise Coriolis flow meter sensor elements.

17. The method of claim 15, with the fluid flow comprising a fuel or an alternative fuel, such as compressed natural gas (CNG) or liquefied petroleum gas (LPG).

18. The method of claim 15, further comprising:

providing a casing (201) that includes the flow divider (203), the first flow sensor element (204), the second flow sensor element (205), at least part of the intake conduit (202), at least part of the first output conduit (206), and at least part of the second output conduit (207); and

providing meter electronics (20) that receives the first flow signal and the second flow signal and generates a corresponding first fuel flow measurement and a corresponding second fuel flow measurement.

19. The method of claim 15, wherein the flow divider (203) divides the fluid flow into the first flow and the second flow and wherein an angle between the first flow and the second flow is about forty-five degrees.

20. The method of claim 15, wherein the flow divider (203) divides the fluid flow into the first flow and the second flow and wherein an angle between the first flow and the second flow is about ninety degrees.