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US 8,943,950 B2Granted
Reciprocating pump flow control
AssigneeMiVa Engineering Ltd.
InventorsSoegi Hartono, Vladimir Scekic, Russell Turnbull
Life of this patent
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Abstract
A multi-throw reciprocating pump is provided. The pump provides active stroke control. Fluid flow is controlled by canceling out at least a portion of a discharge stroke of one plunger with a suction stroke of another plunger. Controlling the degree to which the discharge stroke is cancelled out is used to control the actual volume of fluid being pumped.
Claims7
A reciprocating pump comprising:
- (a) A first sleeve defining a first compression chamber;
- (b) A first plunger receivable in the first sleeve;
- (c) A second sleeve defining a second compression chamber, the second compression chamber in fluid communication with the first compression chamber;
- (d) A second plunger receivable in the second sleeve;
- (e) At least one outlet and at least one inlet in fluid communication with both the first and second compression chambers;
- (f) A first crankshaft coupled to the first plunger, the first crankshaft drivingly coupled to a prime mover;
- (g) A second crankshaft coupled to the second plunger, the second and first crankshafts coupled to each other through a differential and rotatable about a common crankshaft axis;
- (h) a differential housing for housing the differential, the differential housing rotatable about the common crankshaft axis;
- (i) rotation means for rotating the differential housing;
- whereby rotation of the differential housing effects a phase shift between strokes of the first and second plungers ranging from −180° to 180° to modulate effective flow of fluid out of the outlet.
7 more elements
Dependencies are inferred from the claim text.