Pump fluid end with suction valve closure assist
AssigneeHalliburton Energy Services, Inc.
InventorsJustin Lee Hurst, David Mark Stribling
Life of this patent
Estimating the term…
Abstract
A pump fluid end having a reciprocating element a discharge valve assembly, a suction valve assembly, and a suction valve stop. The reciprocating element is disposed at least partially within a reciprocating element bore of the pump fluid end. The suction valve assembly is coupled with a front end of the reciprocating element. The suction valve stop is positioned within the reciprocating element bore such that the suction valve stop contacts and applies a closing force to the suction valve assembly when the suction valve assembly is stuck open at the end of a discharge stroke of the reciprocating element.
Claims13
A pump fluid end comprising:
- a reciprocating element disposed at least partially within a reciprocating element bore of the pump fluid end;
- a discharge valve assembly;
- a suction valve assembly coupled with a front end of the reciprocating element such that movement of a suction valve member of the suction valve assembly away from the reciprocating element in a direction toward the discharge valve assembly opens the suction valve;
- and
- a suction valve stop, wherein the suction valve stop is positioned within the reciprocating element bore such that the suction valve stop contacts and applies a closing force to the suction valve assembly when the suction valve assembly is stuck open at the end of a discharge stroke of the reciprocating element,
- wherein, when the suction valve assembly is not stuck in an open position at the end of the discharge stroke, a minimum distance between the suction valve assembly and the suction valve stop is zero, such that the suction valve assembly contacts the suction valve stop with a closing force less than a rod load limit of a connecting rod coupled to the reciprocating element and the pump power end of the pump during normal operation of the pump.
A pump fluid end comprising:
- a reciprocating element disposed at least partially within a reciprocating element bore of the pump fluid end;
- a discharge valve assembly;
- a suction valve assembly coupled with a front end of the reciprocating element;
- and
- a suction valve stop, wherein the suction valve stop is positioned within the reciprocating element bore such that the suction valve stop contacts and applies a closing force to the suction valve assembly when the suction valve assembly is stuck open at the end of a discharge stroke of the reciprocating element,
- wherein, when the suction valve assembly is not stuck in an open position at the end of the discharge stroke, a minimum distance between the suction valve assembly and the suction valve stop is zero, such that the suction valve assembly contacts the suction valve stop with a closing force less than a rod load limit of a connecting rod coupled to the reciprocating element and the pump power end of the pump during normal operation of the pump,
- wherein, when the suction valve stop contacts the suction valve assembly when the suction valve assembly is stuck open at the end of the discharge stroke of the reciprocating element, the suction valve stop provides a maximum closing force to the suction valve assembly that is less than the rod load limit of the connecting rod coupled to the reciprocating element and the pump power end of the pump comprising the pump fluid end and the pump power end, and
- wherein the suction valve stop is configured to shear at rod loads of greater than 80%-95% of the rod load limit of the connecting rod.
Dependencies are inferred from the claim text.