Working principle diagram of secondary water supply equipment without negative pressure:
The non-negative pressure secondary water supply equipment is a microcomputer fully automatic controlled frequency conversion speed regulation operation, the power failure equipment automatically stops, and the power is automatically turned on. It is fully automatic, and the secondary water supply technology without negative pressure (overlapped) is used, which makes the secondary water supply technology Water supply equipment is more intelligent, energy-saving and reliable.
1. The non-negative pressure secondary water supply equipment adopts a multi-stage full stainless steel pressurizing pump, and the pump casing, impeller and main accessories are made of food-grade stainless steel material, with smooth circulation, high efficiency and energy saving, stable operation and extremely low noise. The performance of the whole machine is excellent, and it is an ideal green environmental protection and energy-saving water supply equipment.
2. The non-negative pressure pressurized water supply equipment does not need to build pools or water tanks, and does not need to install large air pressure tanks, which saves a lot of investment and can make full use of the pressure of the tap water pipe network.
3, sanitation and pollution-free, the water supply system from the water pipe network to the user tap is a fully enclosed structure. Pollutants will not enter the system, the water body is not in direct contact with the air, and the filter components are made of food-grade stainless steel, so there is no chance of secondary pollution, and it is environmentally friendly and hygienic.
4. The energy saving effect is significant. The equipment is directly connected in series with the water pipe. The pressure required for the primary water supply pipe network pressure of the water plant is superimposed on the required pressure, how much difference and how much to make up, which can make full use of the pressure of the pipe network, and the water consumption is low. During the period, the equipment does not even need to run. Compared with traditional water supply equipment, energy saving can reach 30%-90%.
5. Save water resources, do not need regular cleaning and disinfection, and do not waste water and human resources. Save maintenance costs.
Technical indicators of secondary water supply equipment without negative pressure:
1. Water supply flow rate 0—1500 M3/H head
2, control motor power 0.75---1500KW
3, the number of water supply households 10-10,000 households
4, pressure control range 0.15-1.6MPa
5. The average power saving rate is 30-60%
6, control principle sine wave PWM or space vector SVPWM
7, the operation mode single pump or multiple pumps automatically switch
8. Programmable control mode and PID control
9, overload capacity 150% 60 seconds
10. Protection function Soft start, self-diagnosis display and protection function for overvoltage, phase loss, phase change, undervoltage, open circuit, instantaneous power failure, short circuit, etc.
Non-negative pressure secondary water supply equipment model specifications technical process characteristics introduction description:
Take WHG-37M3-PF as an example to explain as follows:
WHG---equipment model (computer controlled constant pressure water supply equipment)
37---Control the rated power of the pump motor (KW)
M---power frequency pump normal mode start (C---Y-three step-down start mode, J---auto coupling step-down start mode)
3---Control the number of main water pumps (1-7)
P---Fixed work mode (X---cycle work mode, empty---one frequency conversion)
F---with auxiliary small pump (empty-without auxiliary small pump)
6. Small footprint, no negative pressure water supply equipment does not need to build reservoirs or water tanks do not need to configure large air pressure tanks, which greatly saves the system footprint, and can use the saved land to increase the utilization rate of real estate, which is in line with the country’s land saving Claim.
7. Easy installation, only need to connect the inlet and outlet pipes, the construction period is short, and the installation is simple.
8. Stable operation, low vibration, low noise (noise value lower than 50 decibels).
9. The system water supply is stable, and the end pressure of the system is fully guaranteed.
