U.S. patent application number 16/239029 was filed with the patent office on 2020-07-09 for sensor head for insertion electromagnetic flow meter.
The applicant listed for this patent is DWYER INSTRUMENTS, INC.. Invention is credited to Alejandro Ignacio Baez Guada, Shilei Ma, Jeff Meuili, Robert Austin Moss.
Application Number | 20200217697 16/239029 |
Document ID | / |
Family ID | 71404338 |
Filed Date | 2020-07-09 |
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United States Patent
Application |
20200217697 |
Kind Code |
A1 |
Moss; Robert Austin ; et
al. |
July 9, 2020 |
SENSOR HEAD FOR INSERTION ELECTROMAGNETIC FLOW METER
Abstract
An apparatus for measuring flow in a conduit includes a sensor
head configured for insertion transversely through a conduit
sidewall to position the sensor head in an electrically conductive
fluid flowing through the conduit. The sensor head includes a core
and a coil that at least partially surrounds the core, the coil
being excitable to generate an electromagnetic field. The sensor
head also includes first and second electrodes spaced apart from
each other, and a body that supports the coil, core, and
electrodes. The body includes at least one channel through which
the electrically conductive fluid flows. The electrodes are
positioned in the at least one channel. Each channel is defined by
opposing sidewalls that have a converging configuration.
Inventors: |
Moss; Robert Austin; (Saint
Joseph, MI) ; Guada; Alejandro Ignacio Baez;
(Chicago, IL) ; Ma; Shilei; (Wilmette, IL)
; Meuili; Jeff; (LaPort, IN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
DWYER INSTRUMENTS, INC. |
Michigan City |
IN |
US |
|
|
Family ID: |
71404338 |
Appl. No.: |
16/239029 |
Filed: |
January 3, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G01F 1/584 20130101;
G01F 1/60 20130101; G01F 1/588 20130101; G01F 1/586 20130101 |
International
Class: |
G01F 1/58 20060101
G01F001/58; G01F 1/60 20060101 G01F001/60 |
Claims
1. An apparatus for measuring flow in a conduit, comprising: a
sensor head configured for insertion transversely through a conduit
sidewall to position the sensor head in an electrically conductive
fluid flowing through the conduit, the sensor head comprising: a
core; a coil that at least partially surrounds the core, the coil
being excitable to generate an electromagnetic field; first and
second electrodes spaced apart from each other; and a body that
supports the coil, core, and electrodes; wherein the body comprises
at least one channel through which the electrically conductive
fluid flows, wherein the electrodes are positioned in the at least
one channel, and wherein each channel is defined by opposing
sidewalls that have a converging configuration.
2. The apparatus recited in claim 1, wherein the electrodes are
positioned on a bottom wall of the at least one channel between the
sidewalls.
3. The apparatus recited in claim 1, wherein the body comprises a
central fin positioned between laterally spaced first and second
wings on a distal end of the body, wherein a first channel is
defined between the first wing and a first side of the fin, wherein
a second channel is defined between the second wing and a second
side of the fin, wherein the first electrode is positioned in the
first channel, and wherein the second electrode is positioned in
the second channel.
4. The apparatus recited in claim 3, wherein the first wing
comprises a convex surface presented inward toward the first
channel, and the second wing comprises a convex surface presented
inward toward the second channel.
5. The apparatus recited in claim 4, wherein the first and second
sides of the fin comprise convex surfaces presented inward toward
the first and second channels, respectively.
6. The apparatus recited in claim 3, wherein the core is
ferromagnetic, extends between and axially beyond the electrodes,
and has a terminal end portion positioned in the fin.
7. The apparatus recited in claim 3, further comprising a
ferromagnetic frame comprising first and second legs that extend
axially along the body on opposite sides of the coil, wherein the
first and second legs extend axially beyond the electrodes, wherein
the first leg has an end portion positioned in the first wing
portion, and wherein the second leg has an end portion positioned
in the second wing portion.
8. The apparatus recited in claim 7, wherein the end portions of
the legs are configured to increase the flux density of the
magnetic field in the channels.
9. The apparatus recited in claim 7, wherein the end portions of
the legs are configured to increase the flux density of the
magnetic field in an effective area of the sensor head.
10. The apparatus recited in claim 1, wherein the body is elongated
and is configured to be inserted lengthwise into the conduit
perpendicular to a fluid flow direction in the conduit, and wherein
the at least one channel and the electrodes are disposed at a
distal end of the body.
11. The apparatus recited in claim 10, wherein the body is
configured to position the electrodes at equal insertion depths in
the conduit, wherein the body is configured to align the electrodes
with each other along an axis that is perpendicular to the fluid
flow direction in the conduit, and wherein the body is configured
to align the at least one channel parallel to the fluid flow
direction in the conduit.
12. The apparatus recited in claim 1, wherein the converging
sidewalls of the at least one channel are configured to reduce the
cross-sectional area of the at least one channel in order to
increase the flow velocity of the electrically conductive fluid
flowing through the at least one channel.
13. The apparatus recited in claim 1, wherein the first electrode
is positioned in a first channel and the second electrode is
positioned in a second channel.
14. The apparatus recited in claim 13, wherein the body is
elongated, cyl