Constant pressure variable frequency water supply system: Innovation of modern water supply technology
With the acceleration of urbanization and the continuous growth of population, the stability and efficiency of water supply system have become an important guarantee for urban development. In this context, constant pressure variable frequency water supply system with its high efficiency, energy saving, stability and other significant advantages, has gradually become the leader of modern water supply technology. This paper will deeply discuss the working principle, technical advantages and performance in practical application of constant pressure variable frequency water supply system, and show its important position in the field of modern water supply.
Working principle of constant pressure frequency conversion water supply system
Constant pressure variable frequency water supply system is mainly composed of water pump, frequency converter, pressure sensor, control system and other parts. Its working principle is to monitor the change of water pressure in the pipe network in real time through the pressure sensor, and feed the signal back to the control system. According to the difference between the preset pressure setting value and the actual water pressure, the control system changes the speed of the pump by adjusting the output frequency of the inverter, so as to realize the accurate adjustment of the water supply flow. When the pipe network pressure is lower than the set value, the frequency converter increases the output frequency, the pump speed increases, and the water supply increases. On the contrary, when the pipe network pressure is higher than the set value, the inverter reduces the output frequency, the pump speed slows down, and the water supply is reduced. In this way, the system is able to keep the pressure of the pipe network constant and meet the water needs of users.
Constant pressure variable frequency water supply system type
Classification by number of pumps
Single pump constant pressure water supply system
- Application scenario: Applicable to a single household or a single water supply point.
- Features: Through a single pump to achieve constant pressure water supply, simple structure, low cost.
- Double pump constant pressure water supply system
- Application scenario: Applicable to the scenario with a large number of water supply points.
- Features: The two pumps work alternately to ensure constant pressure water supply, and can also realize the automatic switch of standby pumps to improve the reliability of water supply.
Multi-pump constant pressure water supply system
- Application scenario: Applicable to large-scale water supply systems.
- Features: Through the linkage work of multiple pumps, the automatic switching of constant pressure water supply and standby pump can meet the needs of large-scale water supply and improve the efficiency and stability of water supply.
Classified by functional characteristics
Basic type constant pressure variable frequency water supply system
- Function: It has the basic constant pressure water supply function, which can automatically adjust the pump speed according to the pressure change of the pipe network, and keep the water supply pressure constant.
Intelligent constant pressure variable frequency water supply system
- Functions: On the basis of the basic model, it adds remote monitoring, fault diagnosis, intelligent scheduling and other advanced functions. It can realize remote management and maintenance of water supply system, improve work efficiency and reduce maintenance cost.
Special application type constant pressure variable frequency water supply system
- Application scenario: Water supply system designed for specific application scenarios, such as water supply for high-rise buildings, fire water supply, agricultural irrigation, etc.
- Features: Customized design and configuration are implemented based on the characteristics and requirements of application scenarios to meet special water supply requirements.
Classified by control mode
PID control constant pressure variable frequency water supply system
- Principle: PID (proportional – integral – differential) control algorithm is used to achieve constant water supply pressure by adjusting the speed of the pump.
- Features: High control precision, fast response speed, can adapt to the change of different water supply needs.
Variable frequency cycle soft start constant pressure water supply system
- Principle: Through the frequency converter to control the start and stop of the pump, to achieve the soft start and soft stop of the pump, reduce the impact on the power grid and equipment wear.
- Features: smooth start, reliable operation, extend the service life of the pump.
Technical advantages of constant pressure frequency conversion water supply system
High efficiency and energy saving: The constant pressure variable frequency water supply system can automatically adjust the pump speed according to the actual demand, avoiding the waste of energy consumption caused by the pump running at full load for a long time in the traditional water supply system. According to statistics, compared with the traditional water supply method, the constant pressure variable frequency water supply system can save 20%-30% energy, which greatly reduces the operating cost.
Pressure stability: Through accurate control algorithms and real-time pressure monitoring, the system can keep the pressure of the pipe network constant, avoiding water inconvenience and equipment damage caused by pressure fluctuations. This is particularly important for high-rise buildings, hospitals, schools and other places that require high water supply pressure stability.
Intelligent management: Modern constant pressure variable frequency water supply systems are usually equipped with remote monitoring and fault diagnosis functions, which can achieve remote management and maintenance of equipment. This not only improves work efficiency, but also reduces manual maintenance costs.
Strong adaptability: The system can flexibly adjust the water supply scheme according to the change of user needs, and is suitable for water supply scenarios of different scales and different water quality requirements.
Practical application of constant pressure frequency conversion water supply system
Constant pressure variable frequency water supply system is widely used in urban water supply, high-rise building water supply, industrial park water supply, agricultural irrigation and other fields. In terms of urban water supply, the system can effectively improve the efficiency of water supply and ensure the needs of residents. In the high-rise building water supply, the system can overcome the problem of insufficient water pressure caused by the floor height, and ensure the normal water consumption of high-rise users; In the industrial park water supply, the system can flexibly adjust the water supply according to the production demand to achieve water saving and emission reduction; In terms of agricultural irrigation, the system can precisely control the amount of irrigation according to soil moisture and crop needs, improving the efficiency of water use.
Conclusion
Constant pressure variable frequency water supply system with its high efficiency, energy saving, stability and other significant advantages, has become the best choice of modern water supply technology. With the continuous progress of technology and the continuous expansion of applications, constant pressure variable frequency water supply system will play a more important role in ensuring the safety of urban water supply and improving the efficiency of water resources utilization. In the future, we have reason to believe that the constant pressure variable frequency water supply system will continue to lead technological innovation in the field of water supply and contribute to the construction of a more green, intelligent and sustainable urban water supply system.
