Non-negative pressure variable frequency water supply system

Non-negative pressure variable frequency water supply system

Product Introduction

The zero-negative-pressure intelligent variable-frequency water supply system consists of a zero-negative-pressure device, a pump unit, and a control cabinet. The flow stabilization device is a closed-type structure, and the closed flow regulator is a tank-type, pipe-network-stacked zero-negative-pressure device. The system is connected in series to locations where the municipal water network has insufficient pressure. The device detects the outlet pressure using a pressure sensor, compares the measured value with the set value, and calculates the required pressure increase over the existing municipal water network pressure. The system then determines the number of pumps in operation and the inverter output frequency, which is then reflected in the motor and pump speeds to achieve constant pressure in accordance with the water consumption curve. The zero-negative-pressure variable-frequency water supply system maximizes the existing pressure of the municipal water network without generating negative pressure. By replacing the traditional water tank with a flow stabilization tank, the system reduces secondary water pollution and represents a new generation of energy-saving products in the water supply industry.

Applications

1. Residential water use: such as high-rise buildings, residential water areas, villas, etc.
2. Public places: such as hospitals, schools, stadiums, golf courses, and airports
3. Commercial buildings: such as hotels, office buildings, department stores, and large saunas
4. Irrigation: such as parks, playgrounds, orchards, and farmland
5. Manufacturing: such as manufacturing, laundry facilities, the food industry, and factories
6. Other: Improvements to water tanks and their water supply systems.

Specifications

1. Power Range: 0.55-300 kW;
2. Power Supply Voltage: Three-Phase 380/400/440/480/500V AC ±10%;
3. Power Supply Frequency: 35Hz-50Hz;
4. Water Supply Flow Rate: ≤1500 m³/h;
5. Motor Power: 0.75-300 kW;
6. Number of Households: 10-10,000
7. Pressure Range: 0.15-2.5 MPa;
8. Power Efficiency: 20%-60%;
9. Operating Temperature: 0-40°C

Operating Conditions

1. Liquid temperature: -15°C to +104°C. This pump can pump clear water or liquids with similar physical and chemical properties to clear water.
2. Maximum operating pressure: <2.5 MPa (system pressure = inlet pressure + closed valve operating pressure <2.5 MPa).
3. Ambient temperature: below 40°C, relative humidity: not exceeding 95%.