1. High rise buildings, residential communities, enterprises and institutions, and other living and fire water supply systems, HVAC, central air conditioning circulation, and quality based water supply systems;
2. Production water for various industrial and mining enterprises (such as circulating cooling water, industrial boiler water supply systems, etc. that require constant pressure production water);
3. Constant pressure oil transportation systems such as oil field pipelines, oil depots, oil pump stations, and oil ports;
4. Various types of waterworks and water supply booster pump stations;
5. Various types of reclaimed water, sewage, and wastewater treatment plants;
6. Sprinkler irrigation stations for large squares, parks, green spaces, and farms;
7. Music fountain;
8. Energy saving and consumption reducing renovation of the user's original pressurization system.

1. Environmental temperature: 4 ℃ -40 ℃
2. Relative humidity ≤ 90% (20 ℃), outdoor allowable 59%, no water droplet condensation;
3. Power supply: 3-phase five wire system, 380V (± 10%), 50HZ (± 5%);
4. Flow range: 0-600m3/h;
5. Pressure range: 0-2.0MPa;
6. Pressure regulation accuracy: ≤ 0.01 MPa;
7. Vibration:<0.5g, vibration frequency 10HZ-150HZ, vibration acceleration should not exceed 5m/s2
8. The operating location of the equipment should be free of conductive or explosive dust, gases or vapors that corrode metals or damage insulation.

1. Low operating noise;
2. A fully enclosed water source tank with both buffering and dynamic compensation functions has been designed, which is more practical and simplifies the control system compared to the so-called non negative pressure tank in the current market;
3. The control system of this series of non negative pressure variable frequency water supply equipment fully summarizes the design and manufacturing experience of our company and domestic and foreign variable frequency water supply equipment. It adopts standardized and universal control system technology solutions, and can be replaced with any manufacturer's variable frequency converter, regulator, PLC and other components. The debugging and maintenance are particularly convenient, and it is a lifelong sales of the product The after-sales service has laid a solid foundation and will not result in sales due to technological advancements Post service issues.
4. The control system of this series of non negative pressure variable frequency water supply equipment products has high intelligence, and the design fully considers the coordination and cooperation of machines, electricity, and instruments. It has detection and monitoring functions that can be achieved quickly but not quickly, as well as simple and convenient human-machine interaction functions. It has comprehensive fault protection functions and countermeasures. When the frequency converter fails to protect, it automatically operates in a degraded state (becoming a power frequency automatic water supply equipment). When the automatic system fails, it can also be manually operated as an emergency backup to win maintenance time.
5. Efficient and energy-saving: Fully utilizing the pressure heat energy inherent in municipal water sources, making up for the difference, effectively and limitedly exerting the energy-saving effect of variable frequency speed regulation.
6. Clean and hygienic: It forms a continuous and closed pressurized water supply method, completely maintaining the water quality and hygiene standards of municipal water sources, fundamentally avoiding the water quality standard reduction and various water source pollution problems caused by the pressurized system.
7. Eliminating waste: Not only has the high-level water tank been eliminated, but the ground (underground) water tank has also been completely eliminated, completely preventing water overflow and water source waste caused by regular cleaning.
8. Various communication interfaces and protocols can be selected according to requirements, so as to connect various human-machine interfaces and computers, and can be connected to various control networks and communication networks, suitable for special and complex operation control and networking requirements. We can develop supporting software for users.

Plan of Stainless Steel Non Negative Pressure Variable Frequency Water Supply Equipment

The formula for calculating the compensation water amount provided by the buffer tank and the total volume of the buffer tank is:

V #=(1-P1/P2) V total=KV total

V # - Compensation water volume provided by the water source tank during the period when the municipal pressure drops from P2 to P1 during the peak water supply period (m3)

P1- Pressure during peak period of municipal water supply (pressure)

P2- Pressure before peak period of municipal water supply (pressure)

V Total - Total volume of water source tank (m3)

Example: During the peak water supply period, when the municipal water source pressure drops from 20mH2O to mH2O, the compensation water volume provided by the water source tank during this period is V #=(1-15/30) V total=0.5V total (m3), accounting for 50% of the total volume.

Obviously, this is a practical and effective dynamic compensation effect. If all water supply equipment users' booster devices have this compensation effect, it can have a certain peak shaving and valley filling effect on municipal water supply as a whole, and the service pressure of the pipeline network during peak periods will not drop too low.