What is the application of beam pumping unit with permanent magnet direct drive motor?

At present, the permanent magnet direct drive motor beam pumping unit power transmission adopts motor-belt drive-reducer-four-bar mechanism. The transmission chain is long, and each transmission link consumes a certain amount of energy, especially the belt transmission efficiency is low. Therefore, the transmission efficiency of the system is low, and the energy waste is serious. Today, energy conservation and emission reduction are more and more valued by the whole society. As a participant in energy conservation in the oil industry, we need to re-examine the transmission system of the beam pumping unit. After more than two years of experimental research, we finally developed a direct drive permanent magnet direct drive motor for beam pumping unit, which eliminates the inefficient belt drive and allows the permanent magnet direct drive motor to directly drive the reducer. The transmission chain of the pumping unit becomes: permanent magnet direct drive motor-reducer-four-bar mechanism.

Product advantages of permanent magnet direct drive motor beam pumping unit:

1. Cancel the belt drive link, energy saving about 10%;

2. The belt transmission link is canceled, the system structure is simplified, and the space occupied by the equipment is reduced;

3. Simplifying the system link itself will reduce the accident rate and improve the operation rate;

4. The transmission belt is a wearing part. The adoption of new technology saves the cost of purchasing belts and the workload of frequent belt replacement, greatly shortens the maintenance time and improves the operation rate;

5. The use of frequency control, so that the system works in good condition, improve production efficiency;

6. Adopt frequency conversion control to realize intelligent online parameter adjustment to ensure energy saving effect, and the power saving rate can reach more than 10%;

The use of frequency conversion control to achieve flexible transmission, greatly reducing the mechanical impact of the transmission system, reducing the failure rate of the reducer, and extending the service life of the reducer.

8. Variable frequency control adopts adjustable "excavator characteristics" to realize intelligent protection of motor overload;

Permanent magnet direct drive motor due to high efficiency, compared with the asynchronous motor energy saving more than 20%.

10. Using permanent magnet direct drive motor, the power factor is greatly improved, reaching 0.95;

11. Easy to install and replace. In the design of beam pumping unit direct drive permanent magnet direct drive motor, the structure size of the field pumping unit is fully considered, which is suitable for the existing pumping unit structure and the installation process is simple.

The permanent magnet direct drive motor can effectively solve the problems of low working efficiency and heavy maintenance workload of the drive device in the cement industry; the permanent magnet direct drive motor has the characteristics of high efficiency, high power factor, remarkable energy saving effect, wide speed range and maintenance-free. Therefore, the promotion and application of permanent magnet direct drive technology in cement machinery and equipment drive device will greatly improve the mechanical equipment's energy index, improve efficiency and power factor, not only bring great economic value to users, but also conform to the concept of building an energy-saving society proposed by the state.

The application of permanent magnet direct drive motor in low-speed direct drive belt conveyor has the following outstanding advantages:

① No deceleration system, shorter transmission chain, more stable system operation, less vibration, lower noise, higher reliability;

②No gear transmission, the loss caused by mechanical wear is effectively controlled, and the service life is longer;

Frequency conversion start, no impact, effectively solve the belt conveyor dynamic tension wave on the belt and equipment damage.