ULTRASONIC SIGNAL COUPLER

• US 20140123768A1
• Filed: 11/05/2012
• Published: 05/08/2014
• Est. Priority Date: 11/05/2012
• Status: Active Grant

• Current Assignee: Baker Hughes, a GE Company, LLC (Baker Hughes Company)
• Original Assignee: General Electric Company
• Inventors: Ao, Xiaolei Shirley, Khrakovsky, Oleg Alexander, Ma, Yue
• Granted Patent: US 9,234,777 B2
• Time in Patent Office: Days
• US Class Current: 73/861.28
• CPC Class Codes: G01F 1/662 Constructional details
• CPC Class Codes: G01F 1/667 Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
• CPC Class Codes: G01N 29/222 Constructional or flow details for analysing fluids optoacoustic fluid cells G01N29/2425
• CPC Class Codes: G01N 29/223 Supports, positioning or alignment in fixed situation mounting transducers per se G10K11/004
• CPC Class Codes: G01N 29/2468 Probes with delay lines

Abstract

An ultrasonic signal coupler includes a pipe having a first ultrasonic waveguide and a second ultrasonic waveguide penetrating the pipe so that ultrasonic transducers attached to ends of the ultrasonic waveguides communicate ultrasonic signals through the ultrasonic waveguides directly through a fluid traveling through the pipe.

Claims

1. An ultrasonic waveguide assembly comprising:

a pipe having an exterior surface and an interior surface, the interior surface defining an inside diameter of the pipe which comprises fluid traveling therethrough;

a first ultrasonic waveguide penetrating the exterior surface of the pipe and the interior surface of the pipe at a first location such that the first ultrasonic waveguide is in direct contact with the fluid traveling therethrough;

a first ultrasonic transducer adapted to be acoustically coupled to the first ultrasonic waveguide;

a second ultrasonic waveguide penetrating the exterior surface of the pipe and the interior surface of the pipe at a second location such that the second ultrasonic waveguide is in direct contact with the fluid traveling therethrough; and

a second ultrasonic transducer adapted to be acoustically coupled to the second ultrasonic waveguide.

2. The ultrasonic waveguide assembly of claim 1, wherein the first location and the second location are about 180 degrees apart.

3. The ultrasonic waveguide assembly of claim 1, wherein the first and second ultrasonic waveguides each penetrate the pipe at an acute angle with respect to an axis of the pipe.

4. The ultrasonic waveguide assembly of claim 1, wherein the first and second ultrasonic waveguides each comprise an axis and the axes of the first and second ultrasonic waveguide are collinear.

5. The ultrasonic waveguide assembly of claim 1, wherein the first and second ultrasonic waveguides each comprise a length and a width, and wherein each of the lengths is greater than a corresponding one of the widths.

6. The ultrasonic waveguide assembly of claim 5, wherein the first and second ultrasonic waveguides each further comprise a thickness and wherein each of the lengths is greater than a corresponding one of the thicknesses.

7. The ultrasonic waveguide assembly of claim 1, wherein at least one of the first and second ultrasonic waveguides protrude into an interior of the pipe.

8. The ultrasonic waveguide assembly of claim 1, wherein the first and second ultrasonic waveguides are each made from titanium, carbon steel, stainless steel, or a combination thereof.

9. The ultrasonic waveguide assembly of claim 1, wherein each of the first and second ultrasonic transducers emit ultrasonic signals that are detected by the other one of the first and second ultrasonic transducers.

10. The ultrasonic waveguide assembly of claim 1, wherein the first and second ultrasonic waveguides are each coupled to the pipe by extrusion, welding, casting, or clamping.

11. The ultrasonic waveguide assembly of claim 1, wherein the first location and the second location are less than 180 degrees apart.

12. The ultrasonic waveguide assembly of claim 1, wherein at least one of the first and second ultrasonic waveguides terminates flush with an interior surface of the pipe.

13. An ultrasonic waveguide assembly comprising:

a pipe having an exterior surface, an interior surface, and a pipe axis, the interior surface defining an inside diameter of the pipe which comprises fluid traveling therethrough in a direction substantially parallel with the pipe axis;

a first ultrasonic waveguide penetrating the exterior surface of the pipe and the interior surface of the pipe at a first location such that the first ultrasonic waveguide is in direct contact with the fluid traveling therethrough, wherein the first ultrasonic waveguide comprises a first waveguide length, a first waveguide width, and a first waveguide axis, the first ultrasonic waveguide penetrates the pipe such that the first waveguide axis forms an acute angle with respect to the pipe axis, and wherein the first waveguide length is greater than the first waveguide width;

a first ultrasonic transducer adapted to be acoustically coupled to the first ultrasonic waveguide;

a second ultrasonic waveguide penetrating the exterior surface of the pipe and the interior surface of the pipe at a second location such that the second ultrasonic waveguide is in direct contact with the fluid traveling therethrough, wherein the second ultrasonic waveguide comprises a second waveguide length, a second waveguide width, and a second waveguide axis, the second ultrasonic waveguide penetrates the pipe such that the second waveguide axis forms an acute angle with respect to the pipe axis, the second waveguide length is greater than the second waveguide width, and wherein the second waveguide axis is collinear with the first waveguide axis; and

a second ultrasonic transducer adapted to be acoustically coupled to the second ultrasonic waveguide.

14. The ultrasonic waveguide assembly of claim 13, wherein the first location and the second location are about 180 degrees apart.

15. The ultrasonic waveguide assembly of claim 13, wherein at least one of the first and second ultrasonic waveguides protrude into an interior of the pipe.

16. The ultrasonic waveguide assembly of claim 13, wherein at least one of the first and second ultrasonic waveguides terminates flush with an interior surface of the pipe.

17. An ultrasonic waveguide assembly comprising:

a pipe having an exterior surface, an interior surface, and a pipe axis, the interior surface defining an inside diameter of the pipe which comprises fluid traveling therethrough in a direction substantially parallel with the pipe axis;

a first ultrasonic waveguide penetrating the exterior surface of the pipe and the interior surface of the pipe, and protruding into an interior of the pipe at a first location such that the first ultrasonic waveguide is in direct contact with the fluid traveling therethrough, wherein the first ultrasonic waveguide comprises a first waveguide length, a first waveguide thickness, and a first waveguide axis, the first ultrasonic waveguide penetrates the pipe such that the first waveguide axis forms an acute angle with respect to the pipe axis, and wherein the first waveguide length is greater than the first waveguide thickness;

a first ultrasonic transducer adapted to be acoustically coupled to the first ultrasonic waveguide;

a second ultrasonic waveguide penetrating the exterior surface of the pipe and the interior surface of the pipe, and protruding into an interior of the pipe at a second location such that the second ultrasonic waveguide is in direct contact with the fluid traveling therethrough, wherein the second ultrasonic waveguide comprises a second waveguide length, a second waveguide thickness, and a second waveguide axis, the second ultrasonic waveguide penetrates the pipe such that the second waveguide axis forms an acute angle with respect to the pipe axis, and wherein the second waveguide length is greater than the second waveguide thickness; and

a second ultrasonic transducer adapted to be acoustically coupled to the second ultrasonic waveguide.

18. The ultrasonic waveguide assembly of claim 17, wherein the first location and the second location are less than 180 degrees apart.

19. The ultrasonic waveguide assembly of claim 17, wherein at least one of the first and second ultrasonic waveguides terminates flush with an interior surface of the pipe.

20. The ultrasonic waveguide assembly of claim 17, wherein the first waveguide axis is collinear with the second waveguide axis.