Mechanically actuated traveling valve
First Claim
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1. A mechanically actuated traveling valve positioned within a positive displacement pump, the pump having a reciprocally moving plunger having an inner periphery forming a fluid chamber, an upstream suction end and a downstream discharge end, the valve comprising:
- a reciprocating valve stem having a first end and a second end, and having an outer periphery, the second end extending through the discharge end of the plunger and terminating downstream of the suction end of the plunger;
a reciprocating motion inducing element connected to the first end of the valve stem by a valve connector for imparting reciprocating movement from the reciprocating motion inducing element to the stem;
a valve seat secured to the plunger downstream of the suction end of the plunger, the seat having an inner periphery, the inner periphery of the seat and the outer periphery of the valve stem defining a first fluid flow area;
a valve plug connected to the stem at its second end, the plug having an outer periphery, the outer periphery of the valve plug and an inner periphery of the plunger defining a second fluid flow area; and
at least one displaceable valve ring having an internal and external periphery, the internal periphery of the ring and the outer periphery of the stem defining a third fluid flow area, and the external periphery of the ring and the inner periphery of the plunger defining a fourth fluid flow area;
wherein the first fluid flow area is substantially equal to or smaller than the second fluid flow area, and substantially equal to the sum of the third and fourth fluid flow areas;
wherein the reciprocating movement of the stem opens and closes the valve;
wherein, when the valve is in the open or the closed position, the valve seat, the valve plug and the at least one displaceable valve ring are each positioned downstream of the suction end of the plunger; and
wherein when in the open position, the distances;
(i) between the valve plug and a last at least one displaceable valve ring adjacent the plug, (ii) between the at least one displaceable valve rings, and (iii) between the valve seat and a first at least one displaceable valve ring adjacent the seat are spaced to maximize fluid flow therethrough while minimizing the pressure drop across the valve.
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Abstract
A mechanically actuated traveling valve for use in fluid pumping equipment. More particularly, a multiple component mechanically actuated traveling plug valve having a valve seat, a valve plug and at least one displaceable valve ring positioned therebetween is provided for use in subsurface positive displacement pumps capable of pumping high viscosity fluids, with any gas to liquid ratio, operating at any inclination angle.
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Citations
15 Claims
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1. A mechanically actuated traveling valve positioned within a positive displacement pump, the pump having a reciprocally moving plunger having an inner periphery forming a fluid chamber, an upstream suction end and a downstream discharge end, the valve comprising:
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a reciprocating valve stem having a first end and a second end, and having an outer periphery, the second end extending through the discharge end of the plunger and terminating downstream of the suction end of the plunger; a reciprocating motion inducing element connected to the first end of the valve stem by a valve connector for imparting reciprocating movement from the reciprocating motion inducing element to the stem; a valve seat secured to the plunger downstream of the suction end of the plunger, the seat having an inner periphery, the inner periphery of the seat and the outer periphery of the valve stem defining a first fluid flow area; a valve plug connected to the stem at its second end, the plug having an outer periphery, the outer periphery of the valve plug and an inner periphery of the plunger defining a second fluid flow area; and at least one displaceable valve ring having an internal and external periphery, the internal periphery of the ring and the outer periphery of the stem defining a third fluid flow area, and the external periphery of the ring and the inner periphery of the plunger defining a fourth fluid flow area; wherein the first fluid flow area is substantially equal to or smaller than the second fluid flow area, and substantially equal to the sum of the third and fourth fluid flow areas; wherein the reciprocating movement of the stem opens and closes the valve; wherein, when the valve is in the open or the closed position, the valve seat, the valve plug and the at least one displaceable valve ring are each positioned downstream of the suction end of the plunger; and wherein when in the open position, the distances;
(i) between the valve plug and a last at least one displaceable valve ring adjacent the plug, (ii) between the at least one displaceable valve rings, and (iii) between the valve seat and a first at least one displaceable valve ring adjacent the seat are spaced to maximize fluid flow therethrough while minimizing the pressure drop across the valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification