Pump systems and associated methods for use with waterjet systems and other high pressure fluid systems
AssigneeOMAX Corporation
InventorsDarren Stang, Chidambaram Raghavan, Scott D. Veenhuizen
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Abstract
High pressure pump systems with reduced pressure ripple for use with waterjet systems and other systems are described herein. A pump system configured in accordance with a particular embodiment includes four reciprocating members operably coupled to a crankshaft at 90 degree phase angles. The reciprocating members can include plungers operably disposed in corresponding cylinders and configured to compress fluid (e.g., water) in the cylinders to pressures suitable for waterjet processing, such as pressures exceeding 30,000 psi.
Claims33
A fluid pressurizing system configured to provide fluid at a pressure greater than 20,000 psi, the fluid pressurizing system comprising:
- a crankcase;
- a crankshaft rotatably disposed in the crankcase;
- four cylinders coupled to the crankcase;
- a fluid inlet and a fluid outlet associated with each cylinder;
- four reciprocating members, wherein each of the reciprocating members is operably disposed in a corresponding one of the cylinders and operably coupled to the crankshaft, and wherein rotation of the crankshaft moves each of the reciprocating members through a cycle configured to draw fluid into the corresponding cylinder through the fluid inlet and drive fluid out of the corresponding cylinder through the fluid outlet at a pressure greater than 20,000 psi;
- and
- four connecting rods of length L, wherein the crankshaft includes four offset journals, and wherein each of the reciprocating members is operably coupled to a corresponding one of the journals via a corresponding one of the connecting rods, wherein rotation of the crankshaft moves each of the reciprocating members through a stroke distance S, and wherein 2.3≦L/S≦6.5.
A fluid pressurizing system configured to provide fluid at a pressure greater than 20,000 psi, fluid pressurizing system comprising:
- a crankcase;
- a crankshaft rotatably disposed in the crankcase;
- four cylinders coupled to the crankcase;
- a fluid inlet and a fluid outlet associated with each cylinder;
- four reciprocating members, wherein each of the reciprocating members is operably disposed in a corresponding one of the cylinders and operably coupled to the crankshaft, and wherein rotation of the crankshaft moves each of the reciprocating members through a cycle configured to draw fluid into the corresponding cylinder through the fluid inlet and drive fluid out of the corresponding cylinder through the fluid outlet at a pressure greater than 20,000 psi, and
- wherein each of the cylinders has associated therewith a dead volume Vd and a reciprocating member swept volume Vs, and wherein 0.5≦Vd/Vs≦4.0.
A fluid pressurizing system configured to provide a fluid at a pressure greater than 20,000 psi, the fluid pressurizing system comprising:
- a crankcase;
- a crankshaft rotatably disposed in the crankcase;
- four cylinders coupled to the crankcase;
- a fluid inlet and a fluid outlet associated with each cylinder;
- four reciprocating members, wherein each of the reciprocating members is operably disposed in a corresponding one of the cylinders and operably coupled to the crankshaft, and wherein rotation of the crankshaft moves each of the reciprocating members through a cycle configured to draw fluid into the corresponding cylinder through the fluid inlet and drive fluid out of the corresponding cylinder through the fluid outlet at a pressure greater than 20,000 psi;
- and
- a manifold having an internal volume Vo, wherein rotation of the crankshaft drives the fluid out of the cylinders and into the internal volume of the manifold through the fluid outlets at a pressure greater than 20,000 psi, wherein each of the cylinders has associated therewith a reciprocating member swept volume Vs, and wherein 10≦Vo/(4Vs)≦150.
Dependencies are inferred from the claim text.