Constant pressure variable frequency water supply equipment
Constant pressure variable frequency water supply equipment is one of the commonly used secondary water supply methods. It’s a method that maintains a constant outlet pressure when water consumption in the supply network changes, and is typically used in conjunction with a water tank. By implementing stepless speed regulation of the water pump motor, and through microcomputer detection and calculation based on user water consumption and water pressure changes, it automatically adjusts the pump speed to maintain a constant water pressure to meet water demand, achieving constant outlet pressure and variable water supply, thus saving water and electricity.
Product Introduction
Constant pressure variable frequency water supply equipment is one of the commonly used secondary water supply methods. It’s a method that maintains a constant outlet pressure when water consumption in the supply network changes, and is typically used in conjunction with a water tank. By implementing stepless speed regulation of the water pump motor, and through microcomputer detection and calculation based on user water consumption and water pressure changes, it automatically adjusts the pump speed to maintain a constant water pressure to meet water demand, achieving constant outlet pressure and variable water supply, thus saving water and electricity.
It is suitable for situations where there is no tap water source (e.g., well water, river water), requiring pressurization, where the municipal water network cannot meet the requirements for pressure boosting, or where pressure boosting is prohibited by relevant regulations or local water authorities. In these cases, a water tank + variable frequency combined water supply method is used to provide secondary pressurization to the user.
Working principle
The constant pressure variable frequency water supply system is a fully automatic water supply device. Its working principle is as follows: Water from a source (tap water, well water, etc.) first enters a water tank of a certain volume, and then is pressurized to the point of use by a variable frequency pressurization device. The tank volume is designed based on the maximum water consumption during peak periods.
When the equipment is manually started for automatic operation, it first checks for water intake. If water intake is ensured, it checks if the outlet pressure is lower than the set pressure. If it is lower than the set pressure, the pump with the shortest cumulative operating time is started for variable frequency water supply.
If the outlet pressure is still lower than the set pressure, and this lower pressure remains below the set pressure for more than 2 minutes, the pump switches from variable frequency to fixed frequency, and the next pump is started to operate at variable frequency to achieve constant pressure water supply (if there are two or more pumps, their cumulative operating time is considered, and the pump with the shortest operating time and no malfunctions is selected).
When water consumption decreases (i.e., the outlet pressure is higher than the set pressure under current operating conditions), the previously started pump stops, ensuring that the pump that starts first stops first, minimizing the difference in cumulative operating time between the two pumps.
When there is no water intake (i.e., the inlet water pressure is zero), the equipment automatically shuts down to protect the water pump and motor.
When abnormal water consumption occurs (such as a burst pipe), an alarm is automatically triggered.
After a power outage, upon power restoration, the PLC performs a self-test. Once the voltage and inlet water pressure are normal, and no alarm signals are detected, the equipment starts and supplies water at the constant pressure set before shutdown.
Features
Low infrastructure investment: No need to build water towers, reservoirs, etc.
Intelligent variable frequency operation, energy saving!
The intelligent control system ensures the pump set maintains high-efficiency operation, making it more stable and energy-efficient!
Stable water pressure and intelligent water volume regulation!
Fully utilizes the water tank’s water volume regulation and storage functions to reduce the impact of secondary water supply equipment on the water supply network, and can still provide water supply for a certain period during water outages, fully ensuring the pressure at the system’s end.
Optional remote monitoring system: Data sharing between PC and mobile APP enables “zero-distance” equipment maintenance, making after-sales service faster!
Easy control: Easily view operating status and modify equipment operating settings.
