1. Disadvantages of traditional water supply system
Traditional water supply system consists of water tower, high water tank or pressure tank.
a. Compared with modern variable frequency pump water supply system, the traditional method has higher equipment investment cost.
b. When using these traditional water supply systems, it has a great loss of pump shaft power and energy.
c. It is likely to cause secondary pollution of water.
Using Tianlang Weichuang frequency conversion pump driver, you can quickly create an economical constant pressure water supply system, with obvious energy saving effect.
2. Advantages of using Tianlang Weichuang water pump variable frequency drive
a. The use of variable frequency drive pump can save 20% - 40% of the power, environmental protection and energy saving
b. The system has the advantages of small area, less investment and high efficiency
c. It has the characteristics of high flexibility, high performance and high automation
d. Reasonable operation, soft start and soft stop can eliminate water hammer effect. As a result, the average motor shaft torque and wear will be greatly reduced. It not only reduces the maintenance cost, but also greatly improves the service life of the pump and the whole water supply system.
e. Constant pressure water supply system directly obtains water from water source, reduces secondary pollution and effectively prevents the spread of infectious diseases.
f. Communication control: variable frequency pump system can help you realize unattended control and save manpower.
3. Energy conversion criteria in variable frequency pumps
Pump flow is directly proportional to the speed of pump (three-phase asynchronous pump), pump head is directly proportional to the square of pump speed, and pump shaft power is equal to the product of flow and head, so pump shaft power is directly proportional to the third power of pump speed. According to these formulas, we can know that changing the speed of the pump is to change the power of the pump.
The following basic formula is as follows:
In these formulas, q is the flow rate, n is the speed of the pump, h is the head, and P is the shaft power.
For example, if we change the power supply frequency from 50 Hz to 45 Hz, then P45 / P50 = (45 / 50) 3 = 0.729, P45 = 0.729 P50. If we change the power supply frequency from 50 Hz to 40 Hz, then P40 / P50 = (40 / 50) 3 = 0.512, P40 = 0.512, P50
The pump water supply system is designed according to the actual situation, but the actual use of the water supply system does not necessarily reach the maximum amount of water, so the valve regulating system increases the resistance to the throttle valve. In this case, it will cause great power loss. The use of pump frequency converter can make the system work stably and stably. The water supply can be adjusted by changing the speed of the pump. This is the reason why the constant pressure water supply system has high energy efficiency and low cost.
4. Common application of Tianlang Weichuang frequency conversion pump
a. Domestic high-rise building water supply system, urban and rural residents water supply, enterprises and institutions
b. It is also used in a variety of industrial constant control requirements, such as cooling water, heat supply network, water circulation, boiler feed water, etc
c. You can also find the wide application of Weichuang variable frequency pump in the pressurization system of waterworks
d. It is also used for irrigation, sewage treatment and artificial fountains.
e. Other fluid constant pressure control systems.
If you are interested in Tianlang Weichuang pump frequency converter, or want to know the parameter setting and wiring diagram, please contact us, our technical support will reply you as soon as possible. If you plan to use solar energy to drive water pump, please check our solar water pump inverter.
