Operation Measures and Flow Characteristics of Self suction Centrifugal Oil Pump

≪ One> The operation measures of self suction centrifugal oil pump The operating component of self suction centrifugal oil pump is the impeller, which generates centrifugal force through the high-speed rotation of the impeller, increases the pressure of the liquid, and completes the pressure boosting effect on the liquid by continuously inhaling and discharging the liquid. By operating a self priming centrifugal oil pump, the continuity of the process flow is achieved, leading to progress in petrochemical production

In order to operate the self suction centrifugal oil pump, the optimal model of the self suction centrifugal oil pump is selected. The driving motor of the self suction centrifugal oil pump is designed with an energy-saving electric motor system, which consumes less electricity and promotes the self suction centrifugal oil pump to achieve the technical standards of energy conservation and consumption reduction. Design optimal operating parameters for the self priming centrifugal oil pump, adjust the operating conditions of the self priming centrifugal oil pump in a timely manner through the operation management of the self priming centrifugal oil pump, and achieve optimal displacement and pressure of the self priming centrifugal oil pump, providing sufficient pressure for the production process

Pay attention to the maintenance and upkeep of the self-priming centrifugal oil pump. Through daily and regular maintenance, the self-priming centrifugal oil pump can operate normally. To avoid the operation of self suction centrifugal oil pumps with faults and timely eliminate the fault status of self suction centrifugal oil pumps, it is necessary to promote the smooth operation of self suction centrifugal oil pumps and achieve the designed production capacity

< II The stable head flow characteristic line of a self suction centrifugal pump

1) The reflux at the leading edge of the impeller, the reflux at the impeller, the secondary flow in the impeller flow channel, the wake jet structure and flow separation inside the impeller flow channel, and the secondary flow generated by the joint operation of the impeller outlet and volute are the main reasons for the small flow instability phenomenon of the ultra-low specific speed high-speed impeller. These unstable factors are interdependent, and this chapter analyzes the mechanism of their generation

2) Reasonable design of flow components such as inducers, centrifugal wheels, and volutes can achieve stable head flow characteristics for ultra-low specific speed high-speed self suction centrifugal pumps. However, some measures may reduce the cavitation performance and efficiency of high-speed self suction centrifugal pumps, so comprehensive consideration must be taken during design

3) Adopting structural measures such as variable pitch inducers and composite impellers with long, medium, and short blades can achieve stable head flow characteristics for low specific speed high-speed self suction centrifugal pumps. The experimental research on several low specific speed high-speed inducer self suction centrifugal pumps shows that using a composite impeller with more blade numbers is beneficial for achieving stable flow head characteristics of low specific speed high-speed self suction centrifugal pumps

4) The installation of a reverse flow stabilizer and an orifice plate at the leading edge of the inducer is beneficial for improving the head of a low specific speed high-speed self suction centrifugal pump at the shut-off point. Indicating that adding orifice plates in front of the inducer, centrifugal impeller, and two impellers can effectively weaken or reduce the backflow and hydraulic losses caused by the inducer and centrifugal impeller, thereby achieving a stable flow head characteristic line for high-speed self suction centrifugal pumps