Meter having banded shroud

• US 9,574,924 B2
• Filed: 08/30/2012
• Issued: 02/21/2017
• Est. Priority Date: 01/12/2012
• Status: Active Grant

• Current Assignee: Micro Motion Incorporated (Emerson Electric Company)
• Original Assignee: Daniel Measurement and Control Incorporated (Emerson Electric Company)
• Inventors: Allen, Charles Robert, Grewal, Randeep Singh
• Primary Examiner(s): Huber, Robert
• Assistant Examiner(s): Roberts, Herbert K
• Application Number:
  US13/598,835
• Publication Number:
  US 20130180340A1
• Time in Patent Office: 1,636 Days
• US Class Current: 1/1
• CPC Class Codes: G01F 1/20 by detection of dynamic effects of the flow
• 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 15/007 comprising means to prevent fraud
• CPC Class Codes: G01F 15/14 Casings, e.g. of special material
• CPC Class Codes: G01F 15/18 Supports or connecting means for meters
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A flow meter is disclosed having a meter body that is enveloped by a shroud having a compliant band disposed at least partially about the meter body. The shroud protects transducers and transducer cables. The shroud forms a chamber between the shroud and meter body, and includes a releasable portion to allow access into the chamber.

Claims

1. A flow meter, comprising:

a meter body having a longitudinal axis, a curved outer surface, and a curved channel in said outer surface, and a pocket disposed in said outer surface; and

a shroud disposed about at least a portion of said meter body and comprising at least one compliant band of sheet material covering said channel, said band extending circumferentially about a majority of said meter body and having two ends and an inner surface that engages said outer surface of said meter body along the length of said band;

wherein said channel and said band form a chamber between said band and said meter body; and

said shroud further comprising a central shroud component coupled to said meter body, adjacent said two ends of said band, and adapted to receive a cable disposed within said chamber and to pass said cable to a location outside said shroud;

a transducer assembly disposed in said pocket and coupled to said meter body; and

a cable coupled to said transducer and extending from said transducer assembly through said chamber and into said central shroud component;

wherein said compliant band covers said pocket and said transducer assembly.

2. The flow meter of claim 1 further comprising an enclosure adapted for housing electronics, wherein said cable extends from said central shroud component and into said enclosure.

3. The flow meter of claim 1 wherein said meter body comprises an annular recess disposed in said outer surface and extending around a majority of the circumference of said meter body;

wherein said curved channel is disposed in said recess; and

wherein said band is disposed in said recess.

4. The flow meter of claim 1 wherein said shroud comprises at least two bands axially spaced from one another.

5. The flow meter of claim 1 wherein said meter body comprises a protrusion extending from said outer surface and into a hole in said band adjacent one of said ends;

and

wherein said protrusion and said hole are configured to retain the band on said meter body.

6. The flow meter of claim 1 further comprising one or more fasteners releasably coupling said band to said meter body;

and

wherein each fastener engages each end of said band.

7. The flow meter of claim 1 further comprising:

a longitudinally extending channel in said outer surface; and

an end shroud component covering said longitudinally extending channel; and

wherein said longitudinally extending channel intersects said curved channel.

8. The flow meter of claim 7 further comprising a wireway extending from said curved channel to said central shroud component and through said end shroud component;

and

wherein the curved channel extends circumferentially about the meter body.

9. The flow meter of claim 1 wherein said first end of said band is spaced apart from said second end of said band by a gap, and wherein a fastener extends across said gap and releasably attaches to said first and second ends of said band.

10. The flow meter of claim 1 wherein said at least one band comprises two parts with each part having an interlocking end configured to couple or decouple, selectively, with said interlocking end of said other part;

and

wherein the interlocking ends are spaced apart from the first and second ends.

11. A flow meter, comprising:

a meter body having a pair of flanges and a curved outer surface extending circumferentially about a majority of said meter body and extending longitudinally between said flanges, wherein said curved outer surface comprises a pocket

a plurality of axially spaced walls coupled to and extending radially away from said outer surface of said meter body and spaced apart from said flanges, wherein each wall extends about a majority of the circumference of said meter body;

a cover comprising a compliant band with an inner surface facing said outer surface of said meter body and engaging said walls;

a transducer assembly disposed in the pocket of said outer surface of the meter body and

coupled to said meter body; and

a cable coupled to said transducer assembly

wherein said band is disposed about a majority of the circumference of said outer surface and the majority of the circumference of said meter body and is supported by said walls along a majority of the length of said band;

wherein at least one chamber is formed between said band and said meter body;

a central shroud component to said meter body and adapted to receive the cable disposed within said chamber and to pass said cable to a location outside said central shroud component;

wherein said cable extends from said transducer assembly through said at least one chamber; and

wherein said band covers said pocket and said transducer assembly.

12. The flow meter of claim 11 wherein said walls have a non-uniform height as measured radially from said outer surface.

13. The flow meter of claim 12 further comprising a junction block coupled to said meter body and adapted to pass cables from within said at least one chamber to a location outside said at least one chamber;

wherein said at least one chamber extends along the majority of the circumference of said meter body.

14. The flow meter of claim 13 wherein said compliant band comprises a first end and a second end and wherein said band is coupled to said meter body such that said first and second band ends oppose one another across a gap that extends across a minority of the circumference of said meter body;

and wherein said walls have their smallest height adjacent said junction block.

15. The flow meter of claim 14 further comprising at least one stand-off element disposed between said junction block and said meter body forming a second chamber there between.

16. The flow meter of claim 13 wherein said band comprises a first end and a second end opposite said first end;

wherein said ends of said band are disposed near said junction block; and

wherein said first end of said band is releasably attached to said second end of said band.

17. The flow meter of claim 11 wherein said band comprises two parts, each of said band parts having a first end and an interlocking end that is spaced apart from said first end, wherein said first ends of each part oppose one another across a gap, and wherein said interlocking end of each part is configured to couple or decouple, selectively, with said interlocking end of said other part.

18. A flow meter, comprising:

a meter body having a through bore for conducting fluid there through and having a curved outer surface;

a shroud assembly comprising at least one compliant band extending around a majority of the circumference of said outer surface and a majority of said meter body, said band having two ends and an inner surface that engages said outer surface of said meter body along said band'"'"'s length, wherein said band is coupled to said meter body such that said two ends oppose one another across a gap;

a chamber between said band and said meter body;

an ultrasonic transducer disposed within said chamber and disposed in a pocket within said meter body; and

a cable in said chamber and extending from said transducer and through said gap;

a central shroud component coupled to said meter body and adapted to receive the cable disposed within said chamber and to pass said cable to a location outside said central shroud component; and

wherein said band covers said pocket and said ultrasonic transducer.

19. The flow meter of claim 18 further comprising at least one fastener extending across said gap and releasably coupling said first end of said band to said second end of said band.

20. The flow meter of claim 18 further comprising a junction block coupled to said meter body and adapted to pass cables from within said chamber to a location outside said shroud assembly.

21. The flow meter of claim 20 further comprising:

an enclosure coupled to said meter body and adapted for housing electronics; and

wherein said junction block is disposed between said enclosure and said meter body.

22. The flow meter of claim 21 further comprising a transducer cable extending from said transducer into said enclosure, said cable being disposed through said chamber and through aligned apertures formed in said enclosure and said junction block.

23. The flow meter of claim 18 wherein said flow meter further comprises a curved channel formed in said outer surface of said meter body and within said chamber, and wherein said cable is disposed in said channel.

24. The flow meter of claim 18 further comprising at least one adjustable fastener coupling said first end of said band to said second end of said band.

25. The flow meter of claim 18 wherein said shroud assembly comprises at least two bands axially-spaced from one another on said meter body.

26. The flow meter of claim 18 wherein said band is a unitary band of sheet metal.

27. A method of making a flow meter, comprising:

providing a meter body having an outer surface;

providing a first compliant shroud band having first and second ends and an inner surface;

positioning said first compliant shroud band circumferentially around a majority of said meter body with said inner surface of said band engaging said outer surface of said meter body;

disposing the ultrasonic transducer in a pocket disposed in the outer surface of the meter body;

coupling an ultrasonic transducer to said meter body;

coupling a cable to said transducer;

enclosing said cable in a curved wireway formed between said inner surface of said shroud band and said outer surface of said meter body, the wireway following the curvature of said outer surface; and

coupling a central shroud component to said meter body, whereby the central shroud component receives said cable and passes said cable to a location outside the central shroud component;

covering said pocket and said transducer with said shroud band; and

affixing said first and second ends of said shroud band to said outer surface of said meter body such that first and second ends are spaced apart across a gap.