In many industrial application scenarios, in order to meet the needs of large flow and pressure, multiple high pressure online circulation pumps are often used in parallel operation. The key to this operation mode is to achieve load balancing and collaborative work.
First, accurate flow distribution is the basis of load balancing. The performance curves of each high pressure online circulation pump are different. Even the same model of pumps will be different in actual operation due to manufacturing errors and wear. To ensure that the flow of each pump is evenly distributed, a high-precision flow control valve or intelligent flow distributor can be installed on the outlet pipe of the pump. By real-time monitoring of the outlet flow of each pump and automatically adjusting the valve opening according to the set flow distribution ratio, each pump can bear a similar flow load, avoiding overload or inefficient operation of individual pumps due to excessive or too small flow. For example, in the cooling circulation system of large-scale chemical production, accurate flow distribution can ensure the stability and efficiency of the entire cooling process and prevent local overheating from causing safety accidents.
Secondly, pressure coordination control is crucial. When running in parallel, the outlet pressure of each pump must be consistent, otherwise there will be problems such as backflow or excessive pressure fluctuations. A pressure sensor is used to monitor the system pressure in real time and feed the signal back to the pump control system. The control system adjusts the speed or number of pumps in operation based on pressure feedback. When the system pressure is lower than the set value, the number of running pumps is increased or the speed of the pump is increased; when the pressure is higher than the set value, the opposite operation is performed. At the same time, in order to avoid damage to the equipment caused by frequent start and stop of the pump, a pressure buffer zone can be set up, and the pressure balance can be achieved by speed adjustment in this interval to ensure that the pressure of the entire system is stable and the pumps work together.
Furthermore, the fault redundancy design and switching strategy of the high pressure online circulation pump are the key to ensuring the continuous operation of the system. In the parallel pump group, when a pump suddenly fails and stops, the remaining pumps should be able to quickly and automatically adjust the load to make up for the flow and pressure loss of the faulty pump. To this end, a complete fault detection system is required to quickly and accurately determine the type and degree of the pump failure. Once a fault is detected, the standby pump is immediately started, and the load is redistributed through the control system to ensure that the flow and pressure of the entire system return to normal in a short time, and the impact of the fault on the production process is minimized.
Finally, communication and data sharing are the links to achieve the collaborative work of multiple pumps. The control systems of each pump should be connected via a high-speed network to exchange operating data in real time, such as flow, pressure, speed, temperature, etc. Based on these data, a centralized monitoring platform can be built to uniformly manage and dispatch the entire parallel pump group. Through data analysis and intelligent algorithms, the operating status changes of the pumps can be predicted in advance, load balancing and collaborative work strategies can be optimized, and the reliability and operating efficiency of the system can be further improved, and the operating costs and maintenance workload can be reduced.
