Method of raising motor efficiency in pumping unit and energy balance device therefor

An energy balance, pumping unit technology, applied in transmission, earthwork drilling, mechanical equipment, etc., can solve the problems of high installed power, low motor efficiency, waste, etc., to reduce installed power, improve average efficiency, slip The effect of reducing the magnitude of the rate change
CN101046144AInactive Publication Date: 2007-10-03DAQING OILFIELD CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
DAQING OILFIELD CO LTD
Publication Date
2007-10-03
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The present invention is method of raising motor efficiency of pumping unit and energy balance device therefor. The present invention features that one energy balance device is mounted between the gear box and the motor of the pumping unit. Before starting the pumping unit, the motor drives the flywheel in the energy balance device to rotate for storing energy; after the flywheel reaches certain rotation speed, the energy balance device is combined to the gear box to start the pumping unit; and after the pumping unit is started, the motor and the energy balance device drive the pumping unit together. The present invention has the features of reduced motor power, raised motor efficiency and saving in power.
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Description

Technical field:

[0001] The present invention relates to an energy-saving and consumption-reducing method in the field of oil field lifting, in particular, it relates to a method of applying the principle of mechanical energy storage to improve the motor efficiency of pumping units and an energy balance specially designed for implementing the method device. Background technique:

[0002] The working efficiency of the existing pumping well motors in the oil field is relatively low, with an average efficiency of 50% to 70%. Since the starting torque and starting power required by the pumping unit at the moment of starting are 3 to 7 times of its average working torque and average power, the starting torque and starting power are relatively large; and the peak torque and peak power during normal operation are its average 2 to 3 times the working torque and average power. Therefore, the installed power of the pumping unit is generally determined according to the root mean squa...

Claims

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