The non-negative pressure water supply equipment uses the municipal pipe network as the water source, fully utilizes the original pressure of the municipal pipe network to form a closed continuous pressurized water supply mode, which has good energy saving effect and no secondary pollution of water quality. It is the development and extension of variable frequency constant pressure water supply equipment. On the basis of the pressure of the municipal pipe network, the direct superposition of pressure water supply can not only save energy, but also has the advantages of full closure, no pollution, small floor space, fast installation speed, reliable operation and convenient maintenance.
The principle of no negative pressure water supply is:
First, the working principle of no negative pressure water supply mode.
There is a variety of non-negative pressure water supply equipment on the market, such as non-negative pressure pressurized water treatment equipment, fully automatic stainless steel ultra-quiet non-negative pressure horizontal units. Its working principle is roughly the same.
What is the water supply without negative pressure? What is its principle, advantages and disadvantages?
1. When the tap water pressure is lower than the user's request, the control system will automatically control the inverter software to start running until the actual working pressure of the user pipe network is equal to the set pressure. The frequency converter controls the frequency converter pump to operate at a constant speed. The higher the tap water pressure, the lower the speed of the inverter pump. The lower the water pressure, the higher the speed of the variable frequency pump. When the tap water pressure is equal to the set pressure, the lead pump will delay sleep, that is, it will make full use of the original pressure of the tap water to ensure that the pressure required by the user is constant. When the pressure drops to the wake-up value, the pump wakes up on its own.
2. The air inlet of the inverter pump is connected to the stainless steel steady flow compensator. The computer system detects the pressure in the steady flow compensator. The negative pressure in the steady flow compensator is ensured by the inlet pressure detection and the vacuum auto-suppressor, thus ensuring a normal supply of water to the water supply network.
3. When the tap water stops, the equipment will stop automatically; when the water comes, the equipment will start by itself; when the power stops, the water supply in the low-pressure area of the tap water can be restored by itself.
4. When the instantaneous negative pressure occurs, first stop all working pumps, then delay the frequency conversion and deceleration, and stop the machine, which not only ensures the user's water, but also relieves the negative pressure.