Six energy saving schemes of long axis pump motor

 Long axis pump     |      [news:date style=yy-m-d]

Six large energy saving schemes of 450LC-17 vertical long axis pump motor

Electrical energy mainly through the power factor of the choice of energy-saving motor, energy saving, proper selection of the motor capacity using magnetic wedge wedge, using Y/ to replace the original delta automatic switching device, the motor reactive power compensation and winding motor speed of liquid six schemes to realize.

First, 450LC-17 vertical long axis pump motor performance mainly in the following aspects of energy consumption:

1 、 the motor load rate is low

Due to improper selection of motor, rich amount is too large or change of production process, making the actual working load of the electric motor is much smaller than the rated load, motor running about 30%~40% installed capacity in rated load 30%~50%, the efficiency is too low.

2 、 the power supply voltage is asymmetrical or voltage is too low

Because of the unbalanced three-phase load single-phase four wire low voltage power supply system, the asymmetrical three phase voltage motor, motor negative torque, three-phase voltage asymmetry increases motor, motor negative torque, increase the loss of the motor in operation. In addition, the network voltage is low for a long time, so that the motor current is normal, so the loss increases. The greater the three-phase voltage asymmetry, the lower the voltage, the greater the loss.

3, the old (obsolete) type of motor is still in use

These motors are made of E insulation, larger in size, poor in starting performance and low in efficiency. Although it has undergone many years of reform, there are still many places to use it.

4, poor maintenance management

Some units of motor and equipment did not comply with the requirements of maintenance, allowing its long-term operation, so that increasing losses.

Therefore, in view of these energy consumption performance, it is worthwhile to study which energy saving plan to choose.

Two, 450LC-17 type vertical long axis pump motor six energy-saving program

Energy saving scheme of water pump motor

1, choose energy-saving motor, efficient motor, reduce all kinds of losses

Use energy-saving motor motor with high efficiency compared with ordinary motor, optimization design, selection of copper and silicon steel sheet of high quality, reduces power loss, loss decreased by 20%~30%, improve the efficiency of 2%~7%; investment recovery period is 1~2 years, some months. In comparison, the efficiency of an efficient motor is 0.413% higher than that of the J02 series motor. Therefore, it is imperative to replace the old type motors with high efficiency motors.

2. Choose the motor with proper motor capacity

To achieve energy state of three-phase asynchronous motor 3 operation area for the following provisions: proper selection of the motor capacity load ratio between 70%~100% for the economic operation zone; the load rate is generally between 40%~70% in the operation area; load rate below 40% for non economic operation zone. The improper selection of motor capacity will undoubtedly lead to waste of electrical energy. Therefore, the use of appropriate motor to improve the power factor, load rate, can reduce power consumption, save power.

3, use magnetic wedge to reduce no-load iron loss

Instead of using magnetic wedge wedge magnetic slot wedge mainly reduce no-load iron loss in asynchronous motor, no additional iron loss is caused by harmonic magnetic flux in the motor cogging effect resulting in stator and rotor core. The high-frequency additional iron loss induced by stator and rotor in the iron core is called pulsating vibration loss. In addition, the stator and rotor teeth sometimes shift to the right and sometimes, the tooth surface tooth cluster magnetic flux changes (public number: Pump housekeeper), can produce eddy current in the tooth surface layer, and produce surface loss. Pulsating losses and surface losses are referred to as high-frequency additional losses, which account for 70%~90% of motor stray losses, and the additional 10%~30%, called load additional losses, is produced by leakage magnetic flux. Although the use of magnetic slot wedge will make the starting torque by 10%~20%, but the motor magnetic wedge than ordinary motor using the wedge iron consumption can be reduced by 60K, and can adapt to the transformation of motor no-load or light load start.

4, using Y/ delta conversion device to solve the waste of energy phenomenon

The Y/ delta conversion device for equipment with light load to waste electricity, without replacement of the motor can be used under the Y/ delta conversion device so as to achieve energy-saving purposes. Because the load in the three-phase alternating current network is different, the voltage acquired by the connection method is different, so the energy absorbed from the grid is different.

5 、 motor power factor, reactive power compensation, reduce power loss

The main goal of reactive power compensation is power factor, reactive power compensation, power factor improvement and power loss reduction. The power factor is equal to the active power and the apparent power ratio, usually, the power factor is low, will cause excessive current, for a given load, when the power supply voltage when the power factor is lower, the greater the current. Therefore, the power factor is as high as possible in order to save electric energy.

6 、 winding motor, liquid speed regulation, liquid resistance speed control technology, stepless speed regulation

The speed regulating technique of liquid speed control for winding motor is developed on the basis of the traditional liquid resistance starter. The size of the resistor is adjusted by changing the distance between the plates to achieve the purpose of stepless speed regulation. It also has good starting performance, it brings long-term electricity, heating problems, due to the unique structure and reasonable heat exchange system, its working temperature is limited under the reasonable temperature. Winding motor with liquid resistance speed control technology, with its reliable work, convenient installation, easy maintenance and high saving rate, low investment, the rapid promotion, for some speed precision, speed range requirements is not wide, and frequent winding speed of the electric motive, large and medium wind winding machine water pump and other equipment of the asynchronous motor with liquid speed effect.