Several Common Electricity Saving Measures In The Use Of Multi-stage Pumps

1. Use high-efficiency and energy-saving water pumps and high-efficiency and low-loss motors, and improve the efficiency of the transmission device.
2. Correctly select the power of the water pump motor. Prevent "big horses pulling small carts". Replace the water pump motor with too large capacity.
When the motor power is much greater than the actual need, you can save electricity by replacing the motor.
3. Choose a reasonable head.
When the water pump head has too much margin, it will waste electricity, so the head of the water pump's operating point should be reasonably determined.
4. Reduce pipeline resistance.
Eliminate excess pipe fittings and unnecessary turns and sharp angles on the pipeline to reduce pipeline resistance and reduce unit power consumption of water transportation. Methods to reduce pipeline resistance are:
①. The pipeline design should be reasonable.
②. Increase the pipe diameter or use double-pipe drainage to reduce the flow rate.
③. Shorten the pipeline length as much as possible, reduce joints, elbows and valves, and especially avoid the appearance of sharp angles.
④. Improve the finish of the inner wall of the pipeline or add a coating.
⑤. Remove dirt on the inner wall of the pipeline in time.
5. CIP Return Pump Speed ​​regulation to save electricity.
The power consumption of the water pump is proportional to the cube of the speed of the unit, so changing the speed of the unit according to the actual load conditions can greatly save electricity. The use of pump speed regulation measures requires a large initial investment, but the power saving effect is significant, especially for large-capacity water pumps. It should be noted that the larger the head, the flatter the resistance curve. Even if the speed changes slightly, the flow rate will change greatly, and the power saving effect is poor.
6. Reconstruction of water pump impeller.
When the flow rate of the pump in use is larger than the actual required flow rate, and the speed control cannot be used or the speed control device is expensive and uneconomical, the impeller of the original pump can be turned or replaced to reduce the flow rate and reduce the head, so as to reduce the power consumption of the water pump.
7. Multistage pumps use pumping operation.
If the multistage pump has excess pressure, 1 to 2 stages can be removed to achieve the purpose of improving efficiency and reducing losses. When you draw level 1, you can disassemble any level in the middle. When you draw level 2, you can disassemble the middle levels 2, 4, 3, and 5. The first and last two levels are not drawn.