I. Overview

This series of fully automatic constant pressure variable flow water supply equipment is a new generation product developed and produced by our company based on the characteristics of fire protection, domestic and production water use, with advanced foreign level. It adopts microcomputer programmable control technology and adjusts various complex tasks according to the various situations of the water supply network and water source, realizing intelligent water supply.

The constant pressure variable flow water supply device is an ideal energy-saving water supply equipment with good energy-saving effect, compact structure, small footprint, stable and reliable operation, long service life, flexible scheme design, adjustable water supply pressure, and variable flow rate. It can completely replace water towers, high-level water tanks, and various pneumatic water supply equipment, and can completely eliminate secondary pollution of water quality.

This equipment is also used to renovate the original old-fashioned pump room equipment, and after renovation, it can also achieve the goal of high efficiency, energy saving, and automatic constant pressure water supply.

2、 Equipment features

1. Efficient and energy-saving

This device can automatically detect and adjust the speed (power consumption) of the electric motor based on the user's actual water consumption and pressure, ensuring that the device is always in a high-efficiency working state.

2. Stable pressure in the water supply network

The equipment is composed of a microcomputer for automatic closed-loop control, which can restore the changing pressure to normal within 0.5 seconds, and the pressure adjustment accuracy is ± 5% of the set value.

3. Small footprint, low investment, and short installation period.

Compared with other old-fashioned water supply equipment, this device saves 3-16 times the land occupation and saves 15% -60% of investment compared to building water towers. The equipment has a small volume, easy assembly, installation and debugging, and a short transportation and installation period.

4. Full protection function, safe and reliable operation, easy operation

The equipment host adopts an imported frequency converter, which has protection functions such as undervoltage, overvoltage, overcurrent, overload, short circuit, overheating, stall prevention, etc. It has been used without faults for more than 100000 hours. The power distribution control part of the equipment adopts intelligent control principles, which are easy to operate and practical. The working status of the equipment is clear at a glance, making it easy for non professionals to quickly master.

5. Full water supply function, high insurance factor

When there is a local malfunction in the equipment, the emergency function can be activated to continue supplying water. This device can automatically connect to the municipal water supply network and has dual constant pressure function, which can meet the normal pressure and flow of domestic and production water. It can automatically switch to high-pressure and high flow water supply in case of fire, and can be used for multiple purposes.

3、 Scope of application

This series of water supply equipment has a water supply pressure of 0.15~2.0MP, a water supply height of 10-200 meters, and a single set of equipment can supply water at a rate of 10~50000m3/h. It can be used for the matching renovation of large, medium, and small tap water; Can be used for production, living, and office water in enterprises, residential areas, and rural areas.

1. Newly built residential communities, villas, office buildings, and comprehensive buildings provide living water supply.

2. Domestic water supply for high-rise buildings, high-end hotels and restaurants.

3. Renovation of traditional water supply systems such as pressurized water supply and ground water tank pressurization.

4. Domestic air pressure water supply equipment can be used for various boiler cold water supply systems

5. The intermediate booster pump station of the water plant.

6. The production and domestic water supply of various industrial and mining enterprises.

7. Various types of circulating water and cooling water supply systems.

8. The pressure of tap water cannot meet the requirements for pressurized water supply for daily life and fire protection.

4、 Technical indicators

1. Water supply pressure 0.15-2MPa (10-200m)

2. Water supply rate of 10~5000m3/h (fire water supply rate of 10~1400l/s)

3. Water pressure stability ± 0.02MPa

4. Electric shock power 1.5~360KW

5、 Energy consumption comparison

1. Compared with other water supply equipment, this series of fully automatic constant pressure variable flow water supply equipment significantly saves electricity.

When the water pump operates at an average flow rate below 80% of the rated flow rate, the energy-saving effect of the water pump after variable frequency speed regulation can reach more than 50%. In the face of the current general water supply system in China, the average flow rate is between 50-70%. Therefore, using this series of constant pressure water supply equipment can provide users with the best economic benefits.

2. According to the information and test results provided by Fulun Pump Company in the United States, it can be seen that:

Compared with constant speed pump (motor power 22KW, running for 17 hours per day)

Annual power saving: 146570-61722=85848 kW/h

Annual electricity savings: 85848 * 0.35=30046.8 yuan (calculated at 0.35 yuan per kilowatt hour)

6、 Installation and usage precautions

1. The equipment should be installed in a dry room with good ventilation, and the ambient temperature should be kept between 5-40 ℃ as much as possible, with a temperature not exceeding 90%. The room should be free of corrosive gases, dust, and flammable and explosive materials.

2. The installation position of the control cabinet is easy for operators to observe, operate, and maintain.

3. The power supply should meet the total power requirements of the equipment motor, and the power of the motor should not exceed the load capacity of the frequency converter.

4. During equipment installation, it is advisable to minimize the use of inlet and outlet bends to reduce unnecessary pressure losses. Pressure sensors should also be installed in areas where water pipe vibrations are minimal and water flow is stable.

5. The control cabinet must be reliably grounded with a grounding resistance of ≤ 3 ohms. Before connecting the power supply, the components and wiring inside the control cabinet should be checked for looseness or detachment, and the connectors should be secure. Only after confirming that there are no errors can the power supply be connected.

6. The control device has been adjusted before leaving the factory. During use, non maintenance personnel are strictly prohibited from adjusting, changing components, or altering wiring sequence without authorization.

7. The equipment has been installed and debugged by the manufacturer before being put into use.

8. After the equipment is put into normal operation, the water pump should be regularly inspected and oiled according to the instructions of the water pump manual.

9. When there is a malfunction in the control part, the company should be notified promptly for repair. Without the company's permission, users are not allowed to disassemble or adjust it on their own.