# US 12,222,230 B1 · Magmeter and method of assembly

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- Number: US 12,222,230 B1
- Document ID: US12222230B1
- Status: Granted
- Kind: B1
- Application number: 18/520,962
- Filed: 2023-11-28
- Granted: 2025-02-11
- Earliest claimed: 2017-11-03
- Assignees: Thompson Equipment Company, Inc.
- Applicants: Thompson Equipment Company, Inc.
- Inventors: Todd C. Thompson; Thomas Meacham, Jr.
- Web page: https://patentgrep.com/patent/US12222230B1

## CPC

- G01F 1/584: {constructions of electrodes, accessories therefor}
- E21B 21/08: Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure (valve arrangements therefor E21B21/10)
- G01F 1/60: Circuits therefor
- G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

The present invention relates to magnetic flowmeters. More particularly, the present invention relates to a magnetic flowmeter specifically designed for the hydraulic fracturing industry that is capable of withstanding a variety of corrosive slurries, acids, bases, and solvents including a liner including partially stabilized magnesium zirconia (MgPSZ).

## Claims

### Claim 1

A flow measurement system comprising:
a primary and a secondary, with the primary comprising:
a flow tube or pipe integrated with a magnetic system and having two opposing ends, with a grooved end fitting at each of said ends, wherein the flow tube or pipe is at least partially lined with a liner having corrosion resistance and comprising partially stabilized magnesium zirconia (MgPSZ) material;
wherein the liner is mechanically affixed to the flow tube or pipe via heat shrink and without use of adhesives;
with the secondary comprising a power supply with a synchronized measurement circuitry; and
wherein the primary is tolerant of or configurable to electrical properties of the secondary and operably mates with the secondary.

### Claim 2 (depends on 1)

The system of claim 1, wherein the primary includes an abrasion resistant ceramic trim.

### Claim 3 (depends on 2)

A method of measuring flow using the system of claim 2.

### Claim 4 (depends on 1)

A method of measuring flow using the system of claim 1.

### Claim 5 (depends on 1)

The system of claim 1, wherein the system conforms to requirements outlined in National Electric Code.

### Claim 6 (depends on 1)

The system of claim 1, wherein the system meets requirements for operation in Hazardous areas designated as Class I Division 2.

### Claim 7 (depends on 1)

The system of claim 1 further comprising one or more sensing electrodes.

### Claim 8 (depends on 7)

A method of measuring flow using the system of claim 7.

### Claim 9 (depends on 7)

The system of claim 7, wherein at least one of the electrodes is made of tungsten carbide.

### Claim 10 (depends on 9)

A method of measuring flow using the system of claim 9.

### Claim 11

A magnetic flowmeter comprising:
a. a pipe or tube having an exterior surface and an interior surface, wherein the pipe or tube is at least partially lined on the interior surface with a liner comprising partially stabilized magnesium zirconia (MgPSZ), wherein the liner is mechanically affixed to the pipe or tube via heat shrink and without use of adhesives;
b. at least one coil for generating a magnetic field affixed to the exterior surface of the pipe or tube and having an electrical connection;
c. one or more ground electrodes having wiring and affixed to the pipe or tube;
d. a shell enclosure, having a tubular neck protrusion, that surrounds the exterior of said coil and is affixed to said coil; and
e, wherein the electrical connection of said coil and the wiring of the one or more ground electrodes and of one or more sensing electrodes are threaded through the neck of said shell and connected to a junction box having a circuit board for operation.

### Claim 12 (depends on 11)

The magnetic flowmeter of claim 11, wherein the one or more ground electrodes are made of industrial grade tungsten carbide.

### Claim 13 (depends on 12)

A flow measurement system comprising the flowmeter of claim 12 and a secondary, wherein the secondary comprises a power supply with a synchronized measurement circuitry; and wherein the magnetic flowmeter is tolerant of or configurable to electrical properties of the secondary and operably mates with the secondary.

### Claim 14 (depends on 13)

A method of measuring flow using the system of claim 13.

### Claim 15 (depends on 11)

The magnetic flowmeter of claim 11, wherein the pipe or tube is substantially annularly lined with the liner.

### Claim 16 (depends on 15)

A flow measurement system comprising the flowmeter of claim 15 and a secondary, wherein the secondary comprises a power supply with a synchronized measurement circuitry; and wherein the magnetic flowmeter is tolerant of or configurable to electrical properties of the secondary and operably mates with the secondary.

### Claim 17 (depends on 16)

A method of measuring flow using the system of claim 16.

### Claim 18 (depends on 11)

A flow measurement system comprising the flowmeter of claim 11 and a secondary, wherein the secondary comprises a power supply with a synchronized measurement circuitry; and wherein the magnetic flowmeter is tolerant of or configurable to electrical properties of the secondary and operably mates with the secondary.

### Claim 19 (depends on 18)

A method of measuring flow using the system of claim 18.

### Claim 20 (depends on 11)

The magnetic flowmeter of claim 11, wherein the pipe or tube has two opposing ends with a grooved end fitting at each of said ends.