EAST Bw-G (I) B Tank Type Pipe Network Stacked Water Supply Equipment

Model Definition                     

BW  Control Cabinet Category: A: Type A configuration T: Special configuration Pump - matching Series: No mark: DFCL pump T: Special configuration Number of Main Pumps: in units Power of Main Pump: kW (per single pump) Head of Main Pump: in meters System Flow: in m³/h G(I): Tank - type G(I)B: Backpack - style tank - type Pipe Network Superposition (Non - negative Pressure) Water Supply Equipment

Example: BW - G(I)B 36/76 - 7.5 - 3 - A indicates a tank - type pipe network superposition (non - negative pressure) water supply equipment (backpack - style), with a system flow of 36m³/h, a main pump head of 76m, equipped with 3 DFCL pumps with a power of 7.5kW each, and a Type A control cabinet (For the configuration of the control cabinet, refer to the control section).

System Workflow Diagram                          

The control system uses the analog input - output unit to monitor the pressure of the equipment's main inlet pipe and the user's pipe network in real - time. It converts the pressure signals into digital signals and stores them in registers. Then, it performs PID closed - loop calculations by comparing these signals with the pre - set pressure values (set on the human - machine interface and stored in registers). The calculation results are converted into analog quantities to control the output frequency of the frequency converter, thus regulating the operating speed of the water pumps. When the water supply from the municipal network is greater than the users' water consumption, the system automatically adjusts the speed of the water pumps according to the pressure of the users' pipe network to ensure a constant pressure in the users' pipe network. When the water supply from the municipal pipe network is less than the users' water consumption, the system promptly reduces the speed of the water pumps and controls the water supply volume to ensure that the water supply equipment does not create negative pressure in the municipal pipe network.

Description of the working principle               

• The water supply equipment utilizes the existing pressure of the municipal pipe network to supply water with superimposed pressure without affecting surrounding users (supplying water in proportion to the inflow), achieving energy - saving. The water from the municipal pipe network is directly connected to the inlet of the equipment, and the outlet of the equipment is linked to the user's pipe network. The entire system is isolated from the outside. Meanwhile, the equipment meets performance standards, maintains a constant water supply pressure, runs stably without leakage, thus conserving water resources and ensuring the absolute safety and pollution - free nature of users' water supply.
• The steady - flow compensation tank is equipped with an anti - negative pressure sensor, a vacuum suppressor, and a dirt discharge port at the bottom. The anti - negative pressure controller is used to monitor the pressure of the municipal pipe network in real - time. If required by users, a disinfection interface can also be set up in the system to facilitate the inspection work of the health supervision department and the disinfection of the interior of the system.
• During low - water - consumption periods, when the water supply and pressure from the municipal pipe network fully meet the requirements of the user's pipe network, the control system puts the water pumps into a sleep energy - saving state or a short - term low - speed operation state for a single pump to replenish pressure.
• During high - water - consumption periods, when the pressure of the municipal pipe network is insufficient but the water supply can meet users' needs, the pressure of the pipe network is directly superimposed on the inlet of the water pumps. The microcomputer control system adjusts the rotational speed of the water pumps and the number of pumps in operation according to users' water consumption, and supplements the insufficient part of the water supply in the pipe network to ensure a constant - pressure water supply to users.
• When users' water demand increases and the water supply in the pipe network is less than the demand, the control system will monitor the inlet water pressure value of the pipe network in real - time. Through computer calculus and fuzzy control, it promptly reduces the rotational speed of the water pumps and controls the water supply volume to ensure that the water supply equipment does not create negative pressure suction on the municipal pipe network and does not stop supplying water due to insufficient water supply.
• As the pressure of the municipal pipe network gradually drops to the pre - set protection pressure value, the microcomputer control system also gradually reduces the rotational speed of the water pumps until the system automatically stops operating. When the pressure of the municipal pipe network recovers to an allowable level, the equipment automatically resumes operation.

Product Features                         

Ensure Safe and Hygienic Water Supply High Regulating and Energy - storing Capacity: The reasonable design of the tank structure endows it with high regulating and energy - storing capabilities, enabling short - term compensation for the municipal pipe network. Fully Enclosed Operation: With stainless - steel SUS304 food - grade pipes, the equipment operates in a fully enclosed manner, free from leakage and secondary pollution. Overpressure Protection Device: The equipment is equipped with an overpressure protection device. It will automatically stop in case of overpressure or pipe bursts. A water immersion sensor (optional) monitors water accumulation in the pump room and triggers automatic shutdown and alarms, protecting the pipeline and water - use safety.