Multi-stage inverter control system of pumping unit
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The pumping unit multi-stage frequency conversion control system is applied to the beam pumping unit, which changes the speed ratio of the upper and lower strokes through flexible speed regulation, reduces the leakage of the pump, increases the time for the liquid to enter the pump, and has the effect of increasing efficiency and energy saving.
The pumping unit multi-stage frequency conversion control system has the following advantages
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1. Apply for two invention patents, "A Method and Device for Monitoring the Balance Rate of Beam Pumping Unit Based on Electric Energy Method" (Authorized) and "A Multi-stage Frequency Conversion Control Method and System for Beam Pumping Unit".
2. The effect of efficiency and energy saving is obvious, after many tests, tested by the oilfield energy conservation monitoring center of PetroChina Co., Ltd., the pump efficiency can be improved by about 20%~30%, and the comprehensive energy-saving rate is about 20%~30% compared with the power frequency working condition. Compared with the same stroke under the frequency conversion condition, the pump efficiency can be improved by about 5%~15%, and the comprehensive energy-saving rate is about 5%~15%. (Energy saving rate varies by well)
3. The system integrates multi-functional electric energy meter and load sensor, which can monitor the downhole load status, support 4G communication, realize remote control of mobile phone APP and computer, and remotely read parameters;
4. The system can make the pumping unit run in a fast and slow way, which is expected to reduce the pressure state of the sucker rod, improve the bending and deformation of the sucker rod, reduce the risk of eccentricity wear of the sucker pipe rod, and prolong the pump inspection cycle.
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