Ultrasonic signal coupler

• US 8,978,476 B2
• Filed: 11/05/2012
• Issued: 03/17/2015
• Est. Priority Date: 11/05/2012
• Status: Active Grant

• Current Assignee: Baker Hughes Holdings LLC (Baker Hughes Company)
• Original Assignee: General Electric Company
• Inventors: Ao, Xiaolei Shirley, Khrakovsky, Oleg Alexander, Ma, Yue
• Primary Examiner(s): Caputo, Lisa
• Assistant Examiner(s): MILLER, ROSE MARY
• Application Number:
  US13/668,909
• Publication Number:
  US 20140123767A1
• Time in Patent Office: 862 Days
• Field of Search: 736/17, 736/43, 736/44, 736/22
• US Class Current: 73/617
• 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: G01F 15/14 Casings, e.g. of special material
• CPC Class Codes: G01N 2291/2634 cylindrical from outside
• CPC Class Codes: G01N 29/2462 Probes with waveguides, e.g. SAW devices
• CPC Class Codes: G01N 29/2468 Probes with delay lines
• CPC Class Codes: G01N 29/28 providing acoustic coupling , e.g. water impedance matching G10K11/02

Abstract

An ultrasonic signal coupling assembly including ultrasonic transducers attached to one or more ultrasonic couplers configured to be coupled to an exterior surface of a pipe. A height of the ultrasonic coupler or couplers is greater than a thickness of the pipe by a factor of about five or more, and a length of the ultrasonic coupler or couplers is greater than the height of the ultrasonic coupler or couplers.

Claims

1. An ultrasonic coupler assembly comprising:

a coupler having a top side and a bottom side opposite the top side, the bottom side configured to be coupled to an exterior of a wall of a pipe and the top side for coupling at least one ultrasonic transducer thereto, the coupler having a height, as measured from the top side to the bottom side, that is greater than a thickness of the pipe by a factor of at least five, a length of the bottom side of the coupler being greater than the height of the coupler.

2. The ultrasonic coupler assembly of claim 1, wherein the coupler is made from a same material as the pipe.

3. The ultrasonic coupler assembly of claim 2, wherein the coupler is made from titanium, carbon steel, stainless steel, or a combination thereof.

4. The ultrasonic coupler assembly of claim 1, wherein the first dimension is greater than the thickness of the pipe by a factor between five to about fifteen.

5. The ultrasonic coupler assembly of claim 1, wherein the top side of the coupler comprises a plurality of ultrasonic transducers coupled thereto, and wherein each of the plurality of ultrasonic transducers emits ultrasonic signals that are detected by another one of the plurality of ultrasonic transducers.

6. The ultrasonic coupler assembly of claim 1, wherein a longer dimension of the bottom surface of the coupler is parallel with a longitudinal axis of the pipe.

7. An ultrasonic coupler assembly comprising:

a first ultrasonic coupler configured to be coupled to an exterior of a wall of a pipe at a first location, wherein a height of the first ultrasonic coupler, as measured between first and second surfaces thereof, is greater than a thickness of the pipe by a factor of at least five, a length transverse to the height of the first ultrasonic coupler is greater than the height of the first ultrasonic coupler, and the second surface of the first ultrasonic coupler is configured to contact the pipe along the full length thereof;

a first ultrasonic transducer attached to the first surface of the first ultrasonic coupler;

a second ultrasonic coupler configured to be coupled to the exterior of the wall of the pipe at a second location, wherein a height of the second ultrasonic coupler, as measured between first and second surfaces thereof, is greater than the thickness of the pipe by a factor of at least five, a length of the second ultrasonic coupler transverse to the height of the second ultrasonic coupler is greater than the height of the second ultrasonic coupler, and the second surface of the first ultrasonic coupler is configured to contact the pipe along the full length thereof; and

a second ultrasonic transducer attached to the first surface of the second ultrasonic coupler.

8. The ultrasonic coupler assembly of claim 7, wherein the first and second ultrasonic couplers are made from titanium, carbon steel, stainless steel, or a combination thereof.

9. The ultrasonic coupler assembly of claim 7, wherein the height of the first ultrasonic coupler and the height of the second ultrasonic coupler are both greater than the thickness of the pipe by a factor between at least five to about fifteen.

10. The ultrasonic coupler assembly of claim 7, wherein the first location and the second location are about 180 degrees around the pipe apart.

11. The ultrasonic coupler assembly of claim 7, wherein the first location and the second location are less than 180 degrees around the pipe apart.

12. The ultrasonic coupler assembly of claim 7, wherein each of the first and second ultrasonic transducers is configured to emit ultrasonic signals that are detected by the other one of the first and second ultrasonic transducers.

13. The ultrasonic coupler assembly of claim 7, wherein the respective lengths of the first and second ultrasonic couplers are parallel with a longitudinal axis of the pipe.

14. An ultrasonic coupling system comprising:

a plurality of pairs of couplers, each of the couplers having a first side and a second side opposite the first side, the first side of each coupler configured to be coupled to an exterior of a wall of a pipe along the full length of the first side, wherein each coupler has a respective height, as measured between first and second surfaces thereof, that is greater than a thickness of the pipe by a factor of at least five, and each coupler has a respective length transverse to the respective height and greater than the respective height; and

a plurality of ultrasonic transducers, each attached to the second side of a respective one of the couplers, wherein the ultrasonic transducers that are coupled to the respective ones of the couplers in one of the plurality of pairs of couplers are configured to emit and receive ultrasonic signals between themselves when the respective ones of the couplers are coupled to the exterior surface of the pipe, and wherein a distance between the first and second sides of each of the respective ones of the couplers is less than a length of its first side.

15. The ultrasonic coupling system of claim 14, wherein the distance between the first and second sides of each of the couplers is greater than a thickness of the pipe by a factor of at least five.

16. The ultrasonic coupling system of claim 14, wherein each of the pairs of couplers are configured to be coupled to the pipe at locations that are less than 180 degrees around the pipe apart.

17. The ultrasonic coupling system of claim 16, wherein each of the pairs of couplers are configured to be coupled to the exterior surface of the pipe such that a longer dimension of the first side of each of the couplers is parallel to a longitudinal axis of the pipe.