Constant-temperature permanent magnet motor for tower type oil pumping machine

Abstract

The invention discloses a constant-temperature permanent magnet motor for a tower type oil pumping machine. The constant-temperature permanent magnet motor comprises a motor, a temperature sensor, a constant-temperature component and a controller for controlling the motor, the temperature sensor and the constant-temperature component, wherein the motor comprises a rotor, a stator and an oil bearing and the rotor is connected to the stator through the oil bearing; the constant-temperature component comprises an oil passage, an oil pump and an oil storage tank, the oil passage is embedded in thestator and is connected to the oil storage tank through the oil pump, the oil pump transports the heat transfer oil in the oil storage tank to the oil passage, and the oil storage tank comprises a tank body and a heating device and a cooling device which are arranged in the tank body; the temperature sensor is arranged on the oil bearing and measures the working environment temperature of the oilbearing. The constant-temperature permanent magnet motor enables the motor to work in a constant temperature environment, can adapt to various ambient temperatures, improves the performance of the motor, increases the lubrication effect of the oil bearing, reduces the mechanical friction between the oil bearing and the rotor and increases the service life. Besides, the constant-temperature permanent magnet motor can effectively reduce energy consumption and reduce operating costs.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a constant temperature permanent magnet motor of a tower pumping unit. Background technique [0002] In the prior art, oil-impregnated bearings are widely used because of their low cost, low noise, and no need for refueling for a long time. However, the lubricating performance of oil-impregnated bearings is greatly affected by temperature, and they can only work normally at temperatures above 5°C. Tower pumping units are generally used in remote areas, where the environment is open and the temperature is low in winter. The lubricating components impregnated in the oil-bearing bearings are difficult to penetrate into the contact surface of the rotating parts, and the lubrication effect is low. Increase the mechanical force between the rotor and the bearing Friction, the motor can not work normally, reaching the set speed; summer exposure temperature is high, the motor is running at high tem...

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Problems solved by technology

[0002] In the prior art, oil-impregnated bearings are widely used because of their low cost, low noise, and no need for refueling for a long time. However, the lubricating performance of oil-impregnated bearings is greatly affected by temperature, and they can only work normally at temperatures above 5°C.

Tower pumping units are generally used in remote areas, where the environment is open and the temperature is low in winter. The lubricating components impregnated in the oil-bearing bearings are difficult to penetrate into the contact surface of the rotating parts, and the lubrication effect is low. Increase the mechanical force between the rotor and the bearing friction, the motor cannot work normally, and reaches the set speed; in summer, the exposure temperature is high, and the motor runs at high temperature, even reaching 100°C, which will easily cause damage to the motor and greatly reduce the service life of the motor

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