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US 12,716,368 B2Granted
Monitoring the oil of a lubrication device
AssigneeSafran Aero Boosters SA
InventorsNicolas Oscar Louis Ghislain Raimarckers, Stephane Alain Luc Ghislain Bougelet
Life of this patent
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Abstract
A device for detecting particles in a lubricating oil of a machine, comprising a particle separator; at least one particle detector; a bypass conduit for the particle-concentrating oil, fluidly connected to an oil outlet of the particle separator, concentrating the particles; and wherein the at least one particle detector is operatively mounted on the bypass conduit so as to be able to detect particles in the bypass conduit.
Claims15
A device for detecting particles in a lubricating oil of a turbomachine, said device comprising:
- a particle separator comprising a circular runoff wall for oil;
- a bypass conduit for the oil concentrating the particles, separate from the particle separator and fluidly connected to an oil outlet of the particle separator so as to be able to form a reduced oil flow parallel to a main oil flow, concentrating the particles;
- and
- at least two particle detectors operatively mounted on the bypass conduit so as to be able to detect particles in the bypass conduit, the at least two particle detectors being arranged in series along the bypass conduit;
- wherein the particle separator comprises an internal wall and an oil settling tank delimited by the circular wall and said internal wall, the oil outlet being a fluid outlet of the oil settling tank;
- wherein the circular runoff wall extends, from an oil inlet to the oil outlet, continuously with a constant diameter, or with a decreasing diameter inwardly toward the internal wall;
- wherein an average flow passage cross-sectional area of the bypass conduit is less than or equal to 700 mm2;
- wherein the device is configured such that a flow velocity of the oil in the bypass conduit is less than or equal to 2 m/s;
- wherein the bypass conduit forms a U-shaped loop;
- and
- wherein the bypass conduit comprises a low-flow metering pump arranged in said bypass conduit and configured to produce the reduced oil flow.
8 more elements
A lubricating oil reservoir for a turbomachine lubrication system, said lubricating oil reservoir comprising:
- an enclosure for lubricating oil;
- a device for detecting particles in the lubricating oil, arranged upstream of the enclosure for the lubricating oil;
- wherein the detection device comprises:
- a particle separator comprising a circular runoff wall for oil;
- a bypass conduit for the oil concentrating the particles, separate from the particle separator and fluidly connected to an oil outlet of the particle separator so as to be able to form a reduced oil flow parallel to a main oil flow, concentrating the particles;
- and
- at least two particle detectors operatively mounted on the bypass conduit so as to be able to detect particles in the bypass conduit, the at least two particle detectors being arranged in series along the bypass conduit;
- wherein the particle separator comprises an internal wall and an oil settling tank delimited by the circular runoff wall and said internal wall, the oil outlet being a fluid outlet of the oil settling tank;
- wherein the circular runoff wall extends, from an oil inlet to the oil outlet, continuously with a constant diameter, or with a decreasing diameter inwardly toward the internal wall;
- wherein an average flow passage cross-sectional area of the bypass conduit is less than or equal to 700 mm2;
- wherein the device is configured such that a flow velocity of the oil in the bypass conduit is less than or equal to 2 m/s;
- wherein the bypass conduit forms a U-shaped loop;
- and
- wherein the bypass conduit comprises a low-flow metering pump arranged in said bypass conduit and configured to produce the reduced oil flow.
11 more elements
A turbomachine lubrication system, said turbomachine comprising:
- conduits for supplying and returning lubricating oil;
- at least one circulation pump for lubricating oil in the conduits;
- a lubricating oil reservoir fluidly connected to the conduits and to the at least one circulation pump;
- wherein the lubricating oil reservoir comprises:
- an enclosure for the lubricating oil;
- a device for detecting particles in the lubricating oil, arranged upstream of the enclosure for the lubricating oil;
- wherein the detection device comprises:
- a particle separator comprising a circular runoff wall for oil;
- a bypass conduit for the oil concentrating the particles, separate from the particle separator and fluidly connected to an oil outlet of the particle separator so as to be able to form a reduced oil flow parallel to a main oil flow, concentrating the particles;
- and
- at least two particle detectors operatively mounted on the bypass conduit so as to be able to detect particles in the bypass conduit, the at least two particle detectors being arranged in series along the bypass conduit;
- wherein the particle separator comprises an internal wall and an oil settling tank delimited by the circular runoff wall and said internal wall, the oil outlet being a fluid outlet of the oil settling tank;
- wherein the circular runoff wall extends, from an oil inlet to the oil outlet, continuously with a constant diameter, or with a decreasing diameter inwardly toward the internal wall;
- wherein an average flow passage cross-sectional area of the bypass conduit is less than or equal to 700 mm2;
- wherein the device is configured such that a flow velocity of the oil in the bypass conduit is less than or equal to 2 m/s;
- wherein the bypass conduit forms a U-shaped loop;
- and
- wherein the bypass conduit comprises a low-flow metering pump arranged in said bypass conduit and configured to produce the reduced oil flow.
15 more elements
A turbomachine comprising a device for detecting particles in a lubricating oil, wherein the detection device comprises:
- a particle separator comprising a circular runoff wall for oil;
- a bypass conduit for the oil concentrating the particles, separate from the particle separator and fluidly connected to an oil outlet of the particle separator so as to be able to form a reduced oil flow parallel to a main oil flow, concentrating the particles;
- and
- at least two particle detectors operatively mounted on the bypass conduit so as to be able to detect particles in the bypass conduit, the at least two particle detectors being arranged in series along the bypass conduit;
- wherein the particle separator comprises an internal wall and an oil settling tank delimited by the circular runoff wall and said internal wall, the oil outlet being a fluid outlet of the oil settling tank;
- wherein the circular runoff wall extends, from an oil inlet to the oil outlet, continuously with a constant diameter, or with a decreasing diameter inwardly toward the internal wall;
- wherein an average flow passage cross-sectional area of the bypass conduit is less than or equal to 700 mm2;
- wherein the device is configured such that a flow velocity of the oil in the bypass conduit is less than or equal to 2 m/s;
- wherein the bypass conduit forms a U-shaped loop;
- and
- wherein the bypass conduit comprises a low-flow metering pump arranged in said bypass conduit and configured to produce the reduced oil flow.
8 more elements
Dependencies are inferred from the claim text.