Пристрій контролю технічного стану занурювальних електродвигунів установок водопостачання

Анотація

DEVICE CONDITION MONITORING SUBMERSIBLE ELECTRIC MOTORS WATER PLANTS

M.T.Lut, O.V.Okushko, D.V.Chayin

The source of water in the agricultural sector mainly serve artesian wells, water lifting which the submersible Electropump units. They have great pressure, produced with different feed, allowing you to select a pump that best suits the calculated values of water consumption.

The purpose of research - to develop a simple and reliable device condition monitoring Electropump units submersible electric installations water.

Since most failures pumping units account for motors, there is a clear need for diagnosing their technical condition, especially of the most vulnerable sites. These nodes are: stator winding (due to low heat resistance Vitkov insulation) and bearings.

As a diagnostic setting stator winding insulation leakage current take on the motor housing and "earth", and bearing condition under control:

-       asymmetry location rotor stator Roztochchya for radial bearings;

-       axial (downward) movement of the rotor to the engine bearings.

In his time at the Institute of Technical Service UAAN designed device for diagnosing the technical condition of electric submersible КИ-6301.

Materials and methods of research. The studies were conducted in laboratories operating and diagnosing electrical equipment using sensor model wearing bearings submersible electric installations water. We used electromechanical devices emergency shutdown that do not require power.

Results. Proposed an alternative device for condition monitoring of electric submersible that is based on electromechanical devices off protective (RCD). Circuit diagram of the device shown in Figure 4 (chotyrypolyusnyy RCD) and Figure 5 (bipolar RCD).

Conclusions

1. The most vulnerable elements submersible induction motor is the stator winding and bearings.

2. Informative and versatile diagnostic parameter submersible induction motor is current leakage - a real case of damage to the stator winding insulation and modeled - in case of wear bearings.

3. Use protective device shutdown can simplify the circuit device technical state control submersible induction motor and increase the reliability Electropump unit as a whole.