Piston sealing ring assembly having a gap cover element
AssigneeMainspring Energy, Inc.
InventorsJodie Prudhomme, Matt Svrcek
Life of this patent
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Abstract
The present disclosure provides a sealing ring assembly having ring segments configured to seal a high-pressure region from a lower pressure region of a piston and cylinder device. The sing segments are configured to move radially outward and wear during operation of the piston via the cylinder device. The ring segments include, for example, wedge-shaped features that engage with corresponding wedge recesses in the interfaces between ring segments. The sealing ring assembly may include a high-pressure boundary and a low-pressure boundary. As the sealing ring wears, the ring segments stay engaged with the interfaces, so that ring gaps do not form on the low pressure boundary.
Claims24
A sealing ring assembly comprising:
- a sealing ring segment that extends axially from one side of the sealing ring assembly to an opposite side of the sealing ring assembly, the sealing ring segment comprising:
- a first axial side that is wedge-shaped, and
- a second axial side, opposite to the first axial side, that comprises a radially outer surface that is arc-shaped, wherein the first axial side is radially offset from the radially outer surface of the second axial side;
- and
- a pair of additional ring segments, wherein:
- each of the pair of additional ring segments comprise respective radially inward surfaces that interface with respective portions of a radially outward surface of the first axial side.
A sealing ring segment comprising:
- a first axial side that is wedge-shaped;
- and
- a second axial side, opposite to the first axial side, that comprises a radially outer surface that is arc-shaped, wherein the first axial side is radially offset from the radially outer surface of the second axial side, and wherein the sealing ring segment is monolithic.
A device comprising:
- a cylinder comprising a bore;
- a pistons comprising a circumferential groove that extends around an outer surface of the piston, wherein the pistons is to translate axially in the bore;
- and
- a sealing ring assembly arranged in the circumferential groove, wherein the sealing ring assembly comprises:
- a sealing ring segment that extends axially from one side of the sealing ring assembly to an opposite side of the sealing ring assembly, the sealing ring segment comprising:
- a first axial side that is wedge-shaped, and
- a second axial side, opposite to the first axial side, that comprises a radially outer surface that is arc-shaped, wherein the first axial side is radially offset from the radially outer surface of the second axial side;
- and
- a pair of additional ring segments, wherein:
- each of the pair of additional ring segments comprise respective radially inward surfaces that interface with respective portions of a radially outward surface of the first axial side.
Dependencies are inferred from the claim text.