High slip variable frequency adjustable speed motor used for driving beam pumping unit

Abstract

The invention discloses a high slip variable frequency adjustable speed motor used for a driving beam pumping unit. The high slip variable frequency adjustable speed motor comprises a shaft, which is connected with a rotor, an inner ring of a shaft extension side bearing, an inner ring of a non-shaft extension side bearing, and a fan, and is connected with a closing ring in a clamped manner. The outer ring of the shaft extension side bearing is connected with a bearing chamber of a shaft extension side end cover, and the shaft extension side end cover is in a bolt connection with the inner small cover of the shaft extension side. The outer side of the shaft extension side end cover is provided with a sealing ring, and the shaft extension side end cover is in a bolt connection with a base. The outer ring of the non-shaft extension side bearing is connected with a bearing chamber of a non-shaft extension side end cover, and the non-shaft extension side end cover is in a bolt connection with the inner small cover of the non-shaft extension side. The non-shaft extension side end cover is in a bolt connection with an air collection ring, and the non-shaft extension side end cover is in a bolt connection with the base. A stator iron core is disposed in the base, and a stator winding is embedded in the stator iron core. An air gap is arranged between the stator winding and the rotor. The variable frequency adjustable speed motor is capable of realizing flexible mechanical characteristics, and is used to solve the temperature rise problem of the motor.

Description

technical field [0001] The invention relates to the field of motors, in particular to a high-slip frequency-variable speed-regulating motor for driving beam pumping units. Background technique [0002] Utilizing the beam pumping unit to extract oil is one of the traditional oil extraction methods in the world petroleum industry, and it is also the oil extraction method that has been dominant in oil production engineering so far. The beam pumping unit has the characteristics of large moment of inertia, difficulty in starting, periodic impact load, continuous work in an outdoor environment, and continuous adjustment of stroke times. Therefore, it is required that the motor used to drive the equipment should have a large starting torque, soft mechanical characteristics, continuous work around the clock, continuously adjustable speed, constant torque output and other performances. [0003] At present, there is no motor in the oil field that meets the performance of "softer mech...

AI Technical Summary

Problems solved by technology

Although high-slip motors have softer mechanical properties among motor varieties, they are not frequency conversion speed regulation products, and all variable frequency motors do not have softer mechanical properties.

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