دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the large circular gear in a mud pump that is driven by the prime mover and that, in turn, drives the connecting rods.

n: The big and round gear installed in drilling pump.

n: 1. a forged-metal shaft that joins the piston of an engine to the crank-shaft. 2. the metal shaft that is joined to the bull gear and crosshead of a mud pump.

n: the bearing between the rod and the crankshaft. Often called the rod bearing.

n: a cylindrical projection on a crank that holds a connecting rod and is held by a bearing.

n: a rotating shaft to which connecting rods are attached. It changes up and down (reciprocating) motion to circular (rotary) motion.

n: a pin that forms a flexible link between the piston and the connecting rod. This bearing area has the highest load per square inch (square millimetre) of any in an engine, perhaps as high as 50,000 pounds per square inch (345 megapascals). Also called a wrist pin.

n: the ann that connects the crank to the walking beam on a pumping unit by means of which rotary motion is converted to reciprocating motion.

the connecting rod from the rotating counterweights to the beam on a beam lift pumping unit.

n: 1. a sucker rod, shorter than usual, used to make up a sucker rod string of desired length. Pony rods are usually placed just below the polished rod. 2. the rod joined to the connecting rod and piston rod in a mud pump.

a short rod for spacing out a rod string.

n: a reciprocating pump for circulating drilling fluids. It operates through cranks and connecting rods by power supplied to its crankshaft from an electric motor or internal-combus- tion engine. It may be a duplex (with two cylinders) or a triplex (with three cylinders). Some mud pumps have double-acting pistons, and some have single-acting pistons that function as plungers.

n: see connecting rod bearing.