Multi-passage oil debris monitor to increase detection capability in high oil flow systems

Patent metadata

Field	Value
Publication number	US-11371979-B2
Application number	US-201916456420-A
Country	US
Kind code	B2
Filing date	Jun 28, 2019
Priority date	Jun 28, 2019
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

An oil debris monitoring sensor includes a multiple of passages within the housing, each of the multiple of passages surrounded by a set of coils to detect a particle. A method for determining a presence of a particle in a system includes a) installing a single sensor in-line with an oil flow path; b) communicating oil through a multiple of passages within the housing of the single sensor; c) detecting a particle through the single sensor; and d) isolating the particle to one of the multiple of passages within the sensor housing.

First claim

What is claimed:

1. An oil debris monitoring sensor, comprising:
a housing; and
a multiple of passages within the housing, each of the multiple of passages surrounded by a set of coils for particle detection, wherein each set of coils comprises a respective first field coil, a sensor coil, and a second field coil.

2. The oil debris monitoring sensor as recited in claim 1 , wherein the multiple of passages within the housing comprises two or more passages.

3. The oil debris monitoring sensor as recited in claim 1 , wherein the housing is located in-line with an oil flow path that is in communication with a geared architecture of a gas turbine engine.

4. The oil debris monitoring sensor as recited in claim 1 , wherein a first set of coils around a first passage of the multiple of passages are wound in a different direction than a second set of coils around a second passage of the multiple of passages.

5. The oil debris monitoring sensor as recited in claim 4 , further comprising a dielectric between the first passage and the second passage.

6. An oil debris monitoring sensor, comprising:
a housing; and
a first passage within the housing along a first axis;
a first field coil, a sensor coil, and a second field coil around the first passage and along the first axis;
a second passage within the housing along a second axis parallel to the first axis; and
a first field coil, a sensor coil, and a second field coil around the second passage and along the second axis.

7. The oil debris monitoring sensor as recited in claim 6 , wherein the housing is located in-line with an oil flow path that is in communication with a geared architecture of a gas turbine engine.

8. The oil debris monitoring sensor as recited in claim 6 , wherein a first magnetic field generated by the first field coil around the first passage is in a first direction and a second magnetic field generated by the first field coil around the second passage is in a second direction opposite the first direction.

9. The oil debris monitoring sensor as recited in claim 6 , further comprising a dielectric between the first passage and the second passage.

10. A method for determining a presence of a particle in a system, comprising:
a) locating a housing in-line with an oil flow path;
b) communicating oil through a multiple of passages within the housing;
c) detecting a particle through processing data from each passage; and
d) isolating the particle to one of the multiple of passages within the housing wherein step d) comprises applying a channel isolation algorithm if a minimum voltage is not identified in response to the particular passing through the housing.

11. The method as recited in claim 10 , further comprising locating the oil flow path in communication with a geared architecture of a gas turbine engine.

12. The method as recited in claim 10 , wherein step d) comprises generating a first magnetic field around a first passage in a first direction and generating a second magnetic field around a second passage in a second direction opposite the first direction.

13. The method as recited in claim 10 , wherein step d) comprises determining an interference between a magnetic field associated with a first passage and a magnetic field associated with a second passage in response to the particle passing through the housing.

14. The method as recited in claim 10 , wherein step d) comprises determining whether a minimum amplitude in a second passage is within a predetermined range, and assessing whether a second particle is passing through the second passage.

15. A method for determining a presence of a particle in a system, comprising:
a) locating a housing in-line with an oil flow path;
b) communicating oil through a multiple of passages within the housing;
c) detecting a particle through processing data from each passage; and
d) isolating the particle to one of the multiple of passages within the housing, wherein step d) comprises applying a channel isolation algorithm if a minimum voltage is not identified.

Assignees

• United Technologies Corp
• Raytheon Tech Corp

Inventors

• Haye Sheridon Everette
• Rocco Edward Thomas

Classifications

• F16N29/04

  enabling a warning to be given; enabling moving parts to be stopped · CPC title

• F05D2260/83

  Testing, e.g. methods, components or tools therefor · CPC title

• F16N2210/02

  Turbines · CPC title

• G01N2015/0053

  in liquids, e.g. trouble · CPC title

• G01N15/0656

  using electric, e.g. electrostatic methods or magnetic methods (by investigating individual particles G01N15/1031, G01N15/12) · CPC title