Stacked non negative pressure secondary water supply equipment with variable frequency water supply

Description :

　　Stacked non negative pressure secondary water supply equipment with variable frequency water supplyMain functions:

　　1. Fully automatic completion of the entire operation process of soft start, frequency conversion to power frequency operation, and stop for multiple water pump units.

　　2. According to changes in water usage, it becomes the start and stop of multiple pump units.

　　3. The LED display with pressure setting value and actual pressure value is the main function.

　　4. There is LED frequency indication, frequency conversion abnormal indication, and motor fault condition display.

　　5. Main protection functions: It has main functions such as undervoltage protection, overvoltage protection, overload protection, short circuit protection, stall prevention, and burn prevention.

　　Classification of Non negative Pressure Water Supply Equipment: There are two main types of non negative pressure water supply equipment used in the market: steady flow tank type and regulating water tank type;

　　1. Stable flow tank type: The tank type non negative pressure water supply equipment is equipped with a pressure sealing tank in front of the water pump, and a stable flow compensator (also known as a "vacuum eliminator") is added inside or outside the tank. The water pump absorbs water through the stable flow tank, pressurizes it, and supplies it for use

　　Households rely on the regulating effect of stabilizing flow compensators to reduce the impact on public water supply networks. This method has no reserve water supply, and when the urban public water supply network is shut down, it is prone to water interruption;

　　2. Regulating water tank type: This method is equipped with an unpressurized regulating water tank, which is internally equipped with a steady flow compensator. Through an electronic control device, the water in the regulating water tank is circulated at least twice a day to ensure that the water quality remains unchanged. When it comes to municipal management

　　When the water volume and pressure conditions of the network can meet the requirements of non negative pressure water supply, water can be directly taken from the municipal pipeline network; Otherwise, take water from the regulating water tank. This method has a certain reserve water volume and can be used in areas where the water supply network is unstable

　　However, due to the presence of water tanks and maintenance manholes, regular cleaning and disinfection are still required according to regulations

　　Working principle of non negative pressure water supply equipment:

　　The non negative pressure water supply equipment consists of an AC frequency converter, a remote pressure gauge, and a regulator as the regulating control mechanism, and a complete constant pressure variable water supply system composed of circuit breakers, contactors, and other actuators. Two water pump workers

　　Working state: Pump 1 is operating with variable frequency, and the frequency rises to a certain set value and reaches the set pressure. At this time, the variable frequency device is working in a constant pressure state. When using water, the pressure drops and the water pump maintains a certain set frequency for a period of time

　　After the interval, if the set pressure cannot be reached, it will automatically switch to the power frequency operation of pump 1 and start the frequency conversion operation of pump 2. When the water consumption decreases, pump 1 stops and pump 2 operates at a variable frequency, increasing the frequency to a certain set value to maintain

　　Maintain the set pressure to function as a constant pressure variable.

AfterSalesService :

• secondary water supply