دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a braking mechanism on the drawworks, supplemental to the mechanical brake, that permits the lowering of heavy hook loads safely at retarded rates without incurring appreciable brake maintenance. There are two types of auxiliary brake-the hydrodynamic and the electrodynamic. In both types, work is converted into heat, which is dissipated through liquid cooling systems. See electrodynamic brake, hydrodynamic brake.

n: The additional device of mechanical brake.Decreasing the maintenance of brake system and making landing heavy loading safe. There are two kinds of forms: one is hydrodynamic, the other is dynamic.

n: a device for arresting the motion of a mechanism, usually by means of friction. as in the drawworks brake. Compare electrodynamics brake. hydrodynamic brake.

n: The device operated by the driller to stop the motion of the draw-works.

n: the action in which the clutch used between an auxiliary hydrodynamic brake and the drawworks drumshaft automatically disengages and runs freely while the empty block is being hoisted.

n: also called hydrodynamic brake or Hydromatic@brake. See hydrodynamic brake.

n: a device mounted on the end of the drawworks shaft of a drilling rig. It serves as an auxiliary to the mechanical brake when pipe is lowered into the wen. The braking effect is achieved by means of an impeller turning in a housing filled with water. Sometimes called hydraulic brake or Hydromatic@ brake.

n: a kind of accessorial brake that join with shaft of drilling rig.

n: trade name for a type of hydrodynamic brake.

n: a kind of accessorial brake that join with shaft of drilling rig.