The official website of Shanghai Songjiang Group introduces the summary of control systems for water supply pumps and circulation pumps. Songjiang Group provides vibration and noise reduction solutions for manyWater Supply Pump and Circulation Pump Control Systems and lithium bromide units, including high-pressure rubber expansion joints and high-quality spring isolators.
Summary of Water Supply Pump and Circulation Pump Control Systems
The water supply pump control system features a variable frequency constant pressure water supply function with a simple human-machine interface, making it easy to operate. Utilizing an artificial intelligence fuzzy control algorithm, it requires minimal user-set parameters and offers stable pressure control. The system includes automatic dynamic and static pressure water supply control, allowing for setting two water supply pressures. It also automatically switches during the start and stop of the recirculation pump. The water shortage protection function stops the pump automatically when the water supply tank is empty, preventing idle operation. Additionally, the system features an automatic water discharge function that opens the pressure relief solenoid valve during system overpressure.
The circulation pump control system uses pressure control to automatically adjust the pump speed based on the pressure difference between the secondary network’s supply and return water or supply water pressure, ensuring stable pressure or pressure difference. With variable frequency control technology, the startup and shutdown of high-power circulation pumps are managed by the inverter, avoiding power grid surges and pressure shocks in the heating network. This significantly reduces the damage rate of pipes and valves and lowers the capacity requirements of power transformers in heat exchange stations, saving investment and maintenance costs.
The primary network flow regulation control system automatically adjusts the valve opening of the primary network flow control valve based on the secondary network’s outlet temperature, ensuring stable outlet temperature. It includes an outdoor temperature compensation control function that adjusts the secondary network’s outlet temperature based on outdoor temperature variations: higher outdoor temperatures result in lower outlet temperatures, and vice versa. The system allows manual adjustment of valve opening via the computer controller and time-based control to set energy-saving modes. The system supports remote data communication via an RS485 interface, enabling up to 64 heat exchange stations to connect on the same line, facilitating data exchange with a host computer. With a host computer, remote monitoring of the heat exchange unit’s operating parameters and automatic data recording at set times are possible. Historical operating data can be queried and printed, along with historical temperature and pressure graphs for analysis and troubleshooting.
Furthermore, the system includes safety features such as short-circuit display for temperature sensors, disconnection protection for pressure sensors, and fault automatic diagnosis functions. These include overpressure protection for the water supply pump, automatic switching to a backup pump in case of pump failure, water tank shortage alarms, and over-temperature alarms, ensuring safe and stable system operation.
