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US 10,648,504 B2Granted
Bearing pressure indicator having a proximity switch arrangement
AssigneeSchlumberger Technology Corporation
InventorsBastiaan Liezenberg, Ronal MacInnes
Life of this patent
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Abstract
A pressure indicator assembly disposed in a bearing has a first pressure relief valve and a first piston disposed in a first passage formed in a first component of the bearing and a first proximity switch disposed an initial distance away from the first piston. A first preset pressure value is set on the first pressure relief valve to indicate when pressure within the bearing is greater than or equal to the first preset pressure value.
Claims18
An apparatus comprising:
- a pressure indicator assembly disposed in a bearing, the pressure indicator assembly comprising:
- a first pressure relief valve and a first piston disposed in a first passage formed in a first housing of the bearing;
- and
- a first proximity switch disposed an initial distance away from the first piston,
- wherein the first proximity switch is disposed in a second housing of the bearing, the first housing rotatable within the second housing about an axis of rotation, and wherein the first piston and the first proximity switch share an axial position along the axis of rotation.
2 more elements
A method comprising:
- positioning a pressure indicator assembly in a bearing;
- setting a first preset pressure value of a first pressure relief valve of the pressure indicator assembly, wherein the first pressure relief valve is disposed in a first passage formed in a first housing of the bearing;
- positioning a first piston of the pressure indicator assembly in a first position relative to an outlet side of the first pressure relief valve in the bearing when the pressure within the bearing at an inlet side of the first pressure relief valve is less than the first preset pressure value, wherein the first piston is disposed in the first passage formed in the first housing of the bearing;
- and
- positioning a first proximity switch in a second housing of the bearing, wherein the first proximity switch is disposed an initial distance away from the first piston, the first housing is rotatable within the second housing about an axis of rotation, and the first piston and the first proximity switch share an axial position along the axis of rotation.
2 more elements
A method comprising:
- using a first pressure indicator assembly disposed in a bearing to detect a first pressure value, the first pressure indicator comprising a first pressure relief valve, a first piston, and a first proximity switch;
- moving the first piston in a direction away from an outlet side of the first pressure relief valve when the first pressure value within the bearing at an inlet side of the first pressure relief valve reaches a first preset pressure value;
- and
- indicating the first pressure value within the bearing is greater than or equal to the first preset pressure value of the first pressure relief valve when the first piston moves towards the first proximity switch.
1 more element
Dependencies are inferred from the claim text.