How to prevent cavitation? Stable operation strategy of HV series chemical process regenerative turbine pump in chemical process
Publish Time: 2025-03-24
In chemical process, cavitation is a problem that seriously affects equipment performance and life. As one of the key equipment, the stable operation of HV series chemical process regenerative turbine pump is crucial to the entire chemical process.
Cavitation is caused by the gas in the liquid precipitating and forming bubbles when the local pressure of the liquid in the pump drops below the saturated vapor pressure. These bubbles quickly burst when the liquid flows to the high-pressure area, causing local high-pressure shock, thereby damaging the pump body and blades. To prevent cavitation, the following measures can be taken:
Optimize pump design: Improve the structural design from the suction port of the pump to the impeller, such as increasing the flow area, optimizing the curvature radius of the impeller cover inlet section, etc., to reduce the rapid acceleration and pressure drop of the liquid flow, thereby reducing the risk of cavitation.
Control flow rate: By reasonably designing pipelines and valves, control the flow rate below the critical flow rate to avoid cavitation caused by excessive flow rate.
Improve the effective cavitation margin: Increase the pressure of the liquid surface in the liquid storage tank in front of the pump and reduce the flow loss on the pipeline in front of the pump to increase the effective cavitation margin (NPSHa) and make the pump less prone to cavitation.
Use anti-corrosion materials: Select materials with high strength, high hardness, high toughness and good chemical stability to manufacture the pump body and blades to improve their anti-cavitation performance.
For the stable operation of HV series chemical process regenerative turbine pump in chemical processes, the following strategies are crucial:
Accurate selection: Accurately select the appropriate HV series chemical process regenerative turbine pump model according to the characteristics of the medium, flow rate and head requirements. Ensure that the performance of the selected pump can meet the requirements of the chemical process and avoid performance problems caused by improper selection.
Correct installation: When installing the HV series chemical process regenerative turbine pump, ensure the horizontality and concentricity of the pump to avoid vibration and noise. At the same time, pay attention to the connection of the pipeline to ensure that there is no leakage and avoid additional stress on the pump body.
Regular maintenance: Regularly maintain and clean the HV series chemical process regenerative turbine pump to remove impurities and sediments that may accumulate in the pipeline. Check the seal condition of the pump and replace it immediately if the seal is found to be worn.
Real-time monitoring: Use modern sensors and monitoring technology to monitor the operating parameters of the HV series chemical process regenerative turbine pump in real time, such as flow, pressure, vibration, etc. Once an abnormality is found, take immediate measures to deal with it to avoid the problem from expanding.
In summary, preventing cavitation and ensuring the stable operation of the HV series chemical process regenerative turbine pump in the chemical process is an important part of ensuring the smooth progress of chemical production. Cavitation can be effectively prevented by optimizing the design of the pump, controlling the flow rate, increasing the effective cavitation margin and using anti-corrosion materials. At the same time, strategies such as accurate selection, correct installation, regular maintenance and real-time monitoring are also the key to ensuring the stable operation of the HV series chemical process regenerative turbine pump.
