دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an arm keyed at right angles to a shaft and used for changing radius of rotation or changing reciprocating motion to circular motion or circular motion to reciprocating motion. On a beam pumping unit, the crank is connected by the pitman to the walking beam, thereby changing circular motion to reciprocating motion.

n: the block in a mud pump that is guided to move in a straight line and serves as a connection between the pony rod and the Commenting rod.

n: The scroll box of drill pump, moving along guide in right line. Used to connect drag link and pitman.

n: 1. a device used with mechanical drawworks brakes to ensure that, when the brakes are used, each brake band will receive an equal amount of tension and also that, in case one brake fails, the other will carry the load. A mechanical brake equaliser is a dead anchor attached to the draw works frame in the form of a yoke attached to each brake band. Some drawworks are equipped with automatic equalisers. 2. any device used to distribute force equally on two pieces of equipment-for example, the pitmans on a beam pumping unit.

n: refer toequalizer bar

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.