Product overview:
For constant pressure water supply equipment, an auxiliary small pump function is added inside. When the water consumption does not exceed the water output of the small pump, the auxiliary small pump will supply water to maintain the pressure. When the water consumption exceeds the water output of the small pump, the pressure sensor senses the fluid pressure drop in the pipe. After analysis and calculation, the microcomputer controller will output signals to the frequency converter according to the calculation results, and the frequency converter will control the main pump Operate and adjust the number of pumps according to the water consumption, so as to greatly save power and water.
Constant pressure water supply equipment adopts air pressure water supply. The purpose of water supply is to use sealed tank body and high pressure gas water pressure in the tank. The specific working sequence is that the water is pressed into the tank by the water pump through the check valve, so that the gas in the tank is compressed and the pressure increases gradually. When the pressure reaches the specified upper limit, the electric contact pressure gauge will automatically stop the pump through the control cabinet. The water pressure in the equipment is higher than the pressure of the external pipe network, and the water is automatically sent to the water supply pipe network. When the water level in the tank drops and the expansion pressure of the gas in the tank decreases to the specified lower limit position, the electric contact pressure gauge will restart the water pump through the control cabinet. Such repetition makes the equipment keep supplying water. When the gas in the tank is insufficient, the air replenishing valve can automatically replenish the gas.
Product details:
Main parameters:
1. Flow range: 0-3000m3 / h
2. Pressure range: 0-2.7mpa
3. Number of control water pumps: 1-8 main pumps + 1-2 stabilized pressure pumps
4. Pump power (single): 1.1-160kw
5. Regulation mode: PID
6. Control mode: constant pressure at pump outlet
7. Frequency conversion control mode: voltage: dco-10v flow: 4-20mA
8. Operation mode: multi pump parallel connection and circulating frequency conversion (or single pump frequency conversion)
9. Power frequency pump start mode ≤ 15kw direct start > 15kw step-down start
10. Adjustment accuracy: 0.01Mpa
11. Stabilization time: ≤ 40s
12. Noise: ≤ rated water pump
Function features of variable frequency and constant pressure water supply equipment:
1. No negative pressure
The direct connection of the system and the municipal pipe network will not cause negative pressure in the municipal water pipe network.
2. Variable frequency constant voltage
The equipment detects the outlet pressure through the sensor in real time, compares the detected value and the set value, determines the number of sets of motors and pumps put into operation and the output frequency of the frequency converter (reflecting the rotation speed of motors and pumps) to trace the water consumption curve to achieve constant pressure.
3. No noise
Using modern design concept, fully considering the requirements of modern people on the environment, the special inverter for mute is selected, and the design means for silencing is used, so the system can operate in ultra mute mode.
4. Highly automated
The system can realize full-automatic control, with functions of manual / automatic switching, timing rotation of main and auxiliary pumps, pressure adjustment, constant pressure, high and low voltage protection, under phase protection, leakage protection, overload protection, overheat protection, water shortage protection, water leakage detection compensation, no water parking, instantaneous tripping protection, etc. In addition, the human-machine interface can be configured according to the user's requirements, and the remote adjustment, monitoring and maintenance can be visualized.
5. Save operating costs
The system ensures that the constant pressure of the pipeline is to adjust the number of sets and operation speed according to the change of water consumption. When the water consumption is large, the input power is large, and when the water consumption is small, the input power is small. In case of small water consumption (such as at night), the system is powered by a sleep pump with small power to start and stop pressure maintenance water supply or variable frequency speed regulation constant pressure water supply. The system has been running at a high efficiency point. Therefore, the operation cost is greatly reduced.
Product use:
中文
English
