Pump liner retention device
AssigneeTsc Offshore Group Limited
InventorDon Clemens
Life of this patent
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Abstract
A method and apparatus for maintaining a seal between a cylinder and a fluid manifold for a reciprocating force delivery device is disclosed. A cylinder retention assembly comprises a rotatable member with a variable topography surface. The rotatable member is disposed against a stop extending outwardly from the cylinder, and is fastened to the fluid manifold by a locking ring. When rotated, the rotatable member produces an axial force on the locking ring and the cylinder, urging the cylinder against the fluid manifold. The cylinder retention assembly may be used in reciprocating pumps and compressors.
Claims23
A retention assembly for a reciprocating force delivery device having a cylinder abuting a fluid manifold, comprising:
- a collar rotatably disposed around the cylinder;
- a locking ring disposed around the cylinder and distal to the fluid manifold;
- a compression ring between the locking ring and the collar;
- and
- a plurality of fasteners that fasten the locking ring to the fluid manifold.
A reciprocating force delivery device, comprising:
- a motor;
- a reciprocating drive that couples the motor with a piston assembly comprising a piston movably disposed within a cylinder;
- a fluid manifold abutting an end of the cylinder;
- and
- a retention assembly attached to the fluid manifold and disposed around the cylinder, comprising a locking ring attached to the fluid manifold by fasteners, and a rotatable collar disposed between the locking ring and a shoulder of the cylinder such that rotation of the rotatable collar applies an axial force to the cylinder and the locking ring.
A method of maintaining a seal between a reciprocating force delivery device comprising a piston movably disposed within a cylinder, and a fluid manifold coupled to the cylinder, comprising:
- providing a rotatable element located between a stop on an external surface of the cylinder and a locking ring fastened to the fluid manifold with fasteners;
- forming a variable topography interface between the rotatable element and a compression ring disposed between the rotatable element and the locking ring;
- and
- rotating the rotatable element with respect to the compression ring to apply an axial force to the cylinder and the locking ring.
Dependencies are inferred from the claim text.