Quotation for Small Non Negative Pressure Water Supply EquipmentThe water source is a self provided well:
1) Submersible pump+control system+pressure tank 2) Submersible pump+water tank (water tank)+control system+pressure tank

Adjust the operating status of the equipment until it stops and is ready for standby, ensuring that the pressure in the inlet pipe network no longer decreases and does not have adverse effects on the tap water pipe network; When the water supply capacity of the tap water network is restored and the pressure of the inlet network is above the protection pressure, the equipment will automatically start and resume normal water supply; When the remaining pressure in the water supply network meets the user's water supply requirements, the equipment automatically enters a sleep state and is supplied directly to the user by the water supply network. When the water supply is insufficient, the equipment automatically resumes operation; When the user does not use water or uses very little water, the equipment automatically enters a shutdown sleep state. The small flow stabilizing and pressure maintaining tank located on the outlet side of the equipment maintains the user's water usage and pipe network leakage. When the user's water stabilizing and pressure maintaining tank cannot maintain the required pressure of the water supply pipe network, the equipment automatically wakes up and resumes normal operation. During the operation of the equipment, the remaining pressure of the tap water pipeline network is fully utilized, which always does not have any adverse effects on the tap water pipeline network and maximizes the satisfaction of user needs

Quotation for Small Non Negative Pressure Water Supply Equipmentfault analysis

1. There are many links in the water supply system, such as float valves, pump bottom valves, etc., which are prone to failure, resulting in poor stability, high failure rate, heavy maintenance workload, short service life, and difficult management of Shanghai's non negative pressure water supply equipment.

With the development and progress of socio-economic technology, the water quality standards of municipal water supply systems are gradually improving, and the water supply capacity is constantly increasing.

3. The formation of a continuous and closed relay boosting water supply method completely avoids the water quality standard reduction and various water source pollution problems caused by traditional two-stage boosting water supply systems, fully maintains the water quality standards of municipal water sources, and fully utilizes the pressure and heat energy of municipal water sources, making up for the difference as much as possible, effectively and practically

Selection principle

The total flow rate of the water pump should be greater than the actual maximum water supply.

2. The head of the water pump should be greater than the actual water supply height.

3. The capacity of the reservoir should be greater than the maximum water supply per hour.

Performance characteristics:

1. The air supply of the pressure tank adopts microcomputer electronic detection, limited air supply and exhaust technology to ensure that there is a certain volume of gas in the tank at all times, fundamentally solving the problem of frequent starting of the water pump caused by long-term gas failure, and filling the gap

2. Depending on the on-site conditions of different users, Shanghai's non negative pressure water supply equipment can adopt the following different configurations