Oil field winch direct drive motor

Abstract

The invention relates to a motor for an oil field winch, in particular to a direct drive motor for the oil field winch. According to the motor, axial ventilation hole structures are arranged on the planes of a rotor punching sheet and a front end cover, and are matched with a fan at the top of a base; the air inlet and outlet of the fan and the air outlet cover structure outside the front end cover, so the axial ventilation capability of the rotor can be effectively enhanced, the forced air-cooling heat dissipation capability of the motor is greatly enhanced, and the motor temperature rise is effectively controlled within a reliable range. The punching sheet adopts a fan-shaped sheet structure, and eight fan-shaped punching sheets are spliced into a whole circle, so that the raw material of the stator punching sheet can be saved; in order to ensure the mechanical strength and stability of the stator core structure, the adjacent full-circle stator punching sheets are staggered at a certain angle. The matching ratio of stator and rotor slots is 144 / 160, and the number of poles is 12. Simulation analysis shows that the structure can increase the outer diameter of the stator, shorten the length of an iron core, reduce the overall electromagnetic load of the motor and effectively improve the torque density of the motor under the condition that the volume is basically unchanged.

Description

technical field [0001] The invention relates to a motor for an oil field winch, in particular to a direct drive motor for an oil field winch. Background technique [0002] Oilfield drawworks is the key equipment in the lifting system of oil drilling rigs. It is responsible for a series of tasks such as lifting and lowering drilling tools and derricks, feeding drilling speed, and dealing with complex accidents downhole. Can such an important transmission part be safe and stable? Work is the prerequisite to ensure the normal operation of the entire drilling process. With the increasing difficulty and depth of drilling and production in oil exploration and development, the demand for high-power and high-performance drawworks has increased, and modern drilling technology has higher requirements for new drawworks. The mechanical structure of the AC variable frequency drilling rig drawworks is simplified, the transmission efficiency is improved, and it is easy to control the torq...

AI Technical Summary

Problems solved by technology

[0006] The invention aims at the problem that the heat dissipation effect of the motor is average and the temperature rise of the motor cannot be completely and effectively suppressed under continuous and complex working conditions for a long time, and provides a direct drive motor for an oil field drawworks

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