Energy saving method for water pump motor

The motor is very important in the production of power plant, the production and life around it is self-evident, and then use the motor, a problem of energy saving is also of concern to the people, here to talk about what the pump motor in the process of using such method.

1 big horse drawn trolley

When the motor load rate is less than 0.4, the size of the power should adjust the motor, to replace the original motor power is less than one, the motor load rate at 0.6 ~ 0.7.

2 the use of nylon flat belt to bring the replacement of nylon flat rubber belt

Simple, technically no special requirements, only a simple calculation, the replacement of a pulley can be. If conditions permit, the indirect transmission of the motor, instead of the direct drive pump, can improve the efficiency of 2 ~ 3%.

3 change energy saving motor

Application of Y series (Basic Series) motor

Adopt Y type energy saving motor, replace the J2 and JO2 products in 60s. Adopt international standards, improve the efficiency level, and locked rotor torque, reduce the volume, increase the current noise, vibration control, but also a reasonable structure, selection of beautiful, good general, long life and so on.

Using YX (derived Series) high efficiency motor

This is a series of low loss, high efficiency motor, shaft center height is H100-H280; the power range is 1.5kW-90kW; 2, 4 and 6 poles than Y series motor efficiency increased by 3% on average, average loss decreased by 28.6%, and the current level of foreign high efficiency motor equivalent. However, this kind of motor price than the Y series of high 30%. this motor is worth a long time to run, high load rate of textile, chemical, fans, pumps, etc..

Energy saving transformation of 4 pump motor

The ventilation loss of the energy saving fan motor occupies a large proportion of the total loss, therefore, the ventilation loss is reduced, and the energy saving effect is obvious. And the JO2 is concerned, the transformation of the fan and the wind hood does not need to change any part of the internal.

The use of magnetic slot mud (CC magnetic material or mud) to replace the common wedge in motor stator core slot tends to smooth, after curing, and the bad wall firmly, and magnetic wedge. So as to improve the gear tooth effect, reduce the loss of copper, iron, machinery, and so on, and provide a new way for the transformation of the energy consuming motor.

5 large cross section of the wire

Using larger cross section conductor, not only in the light load running state, life will be greatly extended, the power saving effect is significant (using copper cable, etc.).

6 pay attention to the cleaning and lubrication of the bearing and winding.

Proper lubrication of bearings and the correct installation and maintenance of the winding, can make the motor energy saving in the operation.

Grease excessive or inferior, will increase the friction loss, reduce efficiency; and will make the oil thrown into the winding, damage to the winding. Therefore, the maintenance should be properly filled with grease, and the use of high-quality lithium base grease. At the same time, but also to prevent moisture and harmful gas into the interior of the motor, keep the winding temperature above zero.

7 using reactive power automatic compensation

The load of pump motor is inductive, and its current vector lags behind the voltage vector. This kind of load consumes the active power, but also consumes the reactive power, and the reactive power consumption is greater than the active power.

To improve the cos Phi approach is in parallel with the capacitor load at both ends of the inductive properties of the opposite, with capacitive reactive power (negative) to offset the inductive reactive power (positive). In fact, the reactive power fluctuation of inductance and capacitor is 180 degrees. That is, when the inductance coil absorbs energy, the capacitor releases energy, and the capacitor absorbs energy (the charging process). The shunt capacitor has the characteristics, is widely used in transportation, improve the rate and distribution in electric equipment.

Compensation method: in the application of reactive power automatic compensation, the empirical formula: the reactive power running current of capacitor is 56%.

8 using S10 type energy saving transformer

The motor rate is directly related to improve the reasonable selection of transformer capacity models, constraints, and reactive power compensation factors therefore, from the perspective of saving. It is important to S7, SL7, SZ7 as soon as possible, SLZ7 series 10 ~ 35kV transformer, replace the SL and SL1 series energy transformer, the 45 degree full inclined joint, no punching, glass fiber banding, core selection of high-quality grain oriented silicon steel sheet cold rolling. The acetal enamelled wire winding wire. As well as new materials, new structure and new technology, it has the advantages of low loss, small size, light weight, low weight, saving electricity, and so on.

9 water pump selection, commissioning and maintenance

A motor driven pump working machine is a whole system. The level of efficiency of the working machine, will directly affect the number of motor power consumption. The operating efficiency of water pump and its size, flow rate, flow, speed and other data are interrelated, and should be reasonable choice, set a not only to meet the production requirements, but also to obtain the best efficiency of the working conditions.

Regular adjustment of the balance of the impeller and improve its finish, adjust the axial gap and replace the mouth ring, improve the water inlet and outlet pipe, reduce the number of elbow,