Overview of WZG Stainless Steel Non Negative Pressure Variable Frequency Water Supply Equipment:

Energy conservation and emission reduction are currently popular trends in China. Our company has developed a non negative pressure water supply equipment based on variable frequency constant pressure water supply equipment. The non negative pressure water supply equipment fully utilizes the existing pressure energy of the tap water network. Under the same water supply demand, relatively small power pumps and control equipment can be selected. At the same time, in the case of low flow water use at night, tap water pressure can be used to directly supply water without starting the pump. Compared to traditional water supply equipment with water tanks, it can save a lot of electricity operating costs and investment costs.Non negative pressure boosting water supply equipmentNo need to build water pools or tanks, occupying relatively less space, saving initial equipment investment and the cost of flushing and disinfecting water pools. The non negative pressure water supply equipment is a fully enclosed structure that truly eliminates secondary pollution in water supply and is a new type of green and environmentally friendly water supply equipment. At present, the commonly used variable frequency constant pressure water supply eliminates surface water tanks and reduces secondary pollution of water quality. However, the cost of constructing and using underground water tanks and the pollution of water quality caused by underground water tanks are also a problem. Therefore, non negative pressure water supply equipment will be the development and extension of variable frequency constant pressure water supply equipment.

Non negative pressure boosting water supply equipmentThe water pump is directly connected to the tap water pipeline network, and a pressure regulating tank is used as the water inlet and storage device for the water pump. A vacuum eliminator is used to eliminate the negative pressure generated in the pipeline network. By fully utilizing the tap water pipeline network and directly connecting it, a pressure regulating tank is used as the water inlet and storage device for the water pump, and a vacuum eliminator is used to eliminate the negative pressure generated in the pipeline network. On the basis of fully utilizing the original pressure of the tap water pipeline network, the secondary boosting of the water supply is achieved. This equipment not only achieves the purpose of increasing water supply (without affecting the water of other users in the pipeline network), but also saves the construction of water tanks and water tanks. While ensuring the water quality of the pipeline network (without secondary pollution), the original water pressure of the pipeline network can be fully utilized. Its energy-saving. The non negative pressure water supply equipment is fully automatic and intelligent controlled, with multiple protection and control functions, and can achieve true unmanned operation.

Working principle of WZG stainless steel non negative pressure variable frequency water supply equipment:

Tap water enters the regulating tank, and the air inside the tank is discharged from the vacuum eliminator. After the water is filled, the vacuum eliminator automatically shuts off. When tap water can meet the requirements of water pressure and quantity, the water supply equipment supplies water directly to the water pipe network through a bypass check valve; When the pressure of the tap water network cannot meet the water requirements, the system sends a pump start signal through a pressure sensor (or pressure controller, electric contact pressure gauge) to start the water pump operation. When the water pump is supplying water, if the water volume in the tap water pipe network is greater than the pump flow rate, the system maintains normal water supply. During peak water usage periods, if the water volume in the tap water pipe network is less than the pump flow rate, the water in the regulating tank can still be supplied as a supplementary water source. At this time, air enters the regulating tank through a vacuum eliminator, eliminating the negative pressure in the tap water pipe network. After the peak water usage period, the system returns to normal state. If the tap water supply is insufficient or the pipe network is shut down, causing the water level in the regulating tank to continuously decrease, the liquid level controller will give a pump shutdown signal to protect the pump unit. During nighttime and low flow water supply, small expansion tanks can be used to prevent the water pump from starting frequently.Non negative pressure boosting water supply equipmentThe key technical components are the intelligent control system (variable frequency type) and the vacuum elimination of the regulating tank. The core part of the intelligent control system adopts Siemens programmable controller, and the programming and design of the software are carefully developed by senior professional engineering personnel based on the operating characteristics of the water pump and years of experience in variable frequency water supply engineering. The equipment has many characteristics such as intuitive interface, simple and reliable operation, stable performance, and high intelligence. Adjusting the vacuum elimination of the tank is also a key technology in this project. The implementation of pipeline overlay relies entirely on the vacuum eliminator on the tank to timely eliminate the vacuum inside the tank when the water is evacuated, thereby achieving stable pressure inside and outside the tank. This does not cause negative pressure impact on the municipal pipeline network and does not affect the normal water use of other municipal pipeline users.

Characteristics of WZG stainless steel non negative pressure variable frequency water supply equipment:

1. Advanced technology: The non negative pressure water supply equipment optimizes and integrates multiple advanced technologies such as vacuum suppression technology, fluid control technology, and intelligent frequency conversion technology. The non negative pressure water supply equipment is directly connected to the tap water pipeline network, achieving stable voltage, energy saving, hygiene, safe and reliable operation, without generating negative pressure, and without the need to build water tanks or reservoirs.

2. Sanitary and pollution-free: The equipment is a fully sealed structure, and bacteria and dust will not enter the system; Avoiding the growth of algae, preventing secondary pollution of water sources and water quality pollution issues, users use tap water that meets national hygiene standards.

3. Significant energy-saving effect: The fully enclosed structure operation avoids phenomena such as seepage, running, emitting, dripping, and leaking, without water tanks or pools, saving disinfection and flushing water. Directly connected to the tap water pipeline network can fully utilize the original pressure of tap water, and make up for the difference as much as possible. When the tap water meets the requirements, the equipment will stop working. Non negative pressure water supply equipment operates most of the time at lower frequencies and consumes less power. By adopting frequency conversion technology, further energy saving can be achieved, and the overall energy saving can generally reach more than 50%.

4. Reliable operation: It has no impact on the tap water pipeline network, and the equipment uses a regulating tank to automatically adjust without negative pressure. When the pipeline network is pressurized for water supply, it will not generate negative pressure on the original pipeline network and will not affect the normal water use of other users.

5. Investment savings: No need to build reservoirs or water tanks, saving on civil engineering investment; No need to apply pressure from zero, therefore equipment selection is relatively small and equipment investment is reduced; The water quality is pollution-free and does not require purification equipment, saving investment. It can fully utilize the pressure of the tap water pipeline network, with low energy consumption and saving daily electricity expenses. Not using a pool or water tank, saving the cost of regular cleaning and disinfection.

6. Flexible electrical configuration of equipment: The electrical control part can be controlled by variable frequency constant (variable) voltage control or directly controlled by pressure (BZG pneumatic type).

Operating environment of WZG stainless steel non negative pressure variable frequency water supply equipment:

1. Environmental temperature: 5-50 ℃; Relative humidity: ≤ 90%, no condensation.
2. The surrounding air is free from significant pollution such as corrosive gases, water vapor, dust, etc.
3. The maximum altitude of the installation site is 1000m.

WZG stainless steel non negative pressure variable frequency water supply equipment features:

1. Two working modes:
a. Automatic working mode: Automatic mode is a working mode under normal water supply conditions. Generally speaking, when the customer selects this method after normal water supply, all different water supply requirements of the pipeline network will be adapted to various functions under the effective control of the non negative pressure water supply equipment when working in automatic mode.
b. Manual working mode: This operation mode is set for emergency use by users in case of automatic working mode failure. This working mode completely adopts the simplest starting method, which directly starts and stops any water pump motor on the operation panel. Generally, it is only used in case of automatic failure or debugging.
2. Easy to integrate into intelligent management systems, the main components use high-quality components, and the entire system has high reliability and anti-interference ability. Its built-in standard serial communication port (RS485) makes communication between the system and the computer very convenient.
3. Water level protection function, when the water level in the water tank is lower than the set water level, the system automatically protects and shuts down. The liquid level controller has stable and reliable performance.
4. Automatic reset function, the system automatically starts when the power is restored after a power outage or when the water level is restored.
5. Fault pump shielding function, after the fault pump is shielded, it will directly exit the operating program and be replaced by a backup pump.
6. Automatic protection function: It has automatic protection functions such as overload, overcurrent, short circuit, phase loss, overvoltage, undervoltage, and water shortage shutdown.