Overload Solution For Stainless Steel Multi-stage Pumps

The use of stainless steel multi-stage pumps can cause overload, so how can this situation be resolved?
1. Adopting mechanical automatic pressure regulating bypass valve. The bypass valve is installed on the bypass pipeline between the outlet and inlet of the stainless steel multi-stage pump. This valve controls the pressure difference between the inlet and outlet of the pump to not exceed the rated value. When the pressure difference reaches the rated value, the valve automatically opens due to the pressure difference, connecting the outlet and inlet of the stainless steel multi-stage pump, rapidly reducing the pressure difference between the inlet and outlet. At this time, the stainless steel multi-stage pump operates under almost no pressure difference load. When the pressure difference is lower than the rated value, the valve automatically closes, and the gas is extracted from the previous stage pump through the stainless steel multi-stage pump. The stainless steel multi-stage pump with a bypass overflow valve can be started simultaneously with the previous stage pump, making the unit operation simple and convenient.
2. The use of hydraulic couplings can also prevent pump overload, allowing stainless steel multi-stage pumps to operate under high pressure differential. The hydraulic coupling is installed between the stainless steel multi-stage pump and the motor. Under normal working conditions, the hydraulic coupling transmits the rated torque from the motor end to the pump. The large pressure difference of stainless steel multi-stage pumps is determined by the large torque transmitted by the hydraulic coupling, and the large torque transmitted by the hydraulic coupling is adjusted by the amount of liquid in it. When the pump operates under high pressure difference or starts at the same time as the previous stage pump, a speed difference or sliding occurs inside the liquid coupling, only transmitting a certain amount of torque, causing the pump to slow down and work. As the pumping progresses, the gas load decreases and the stainless steel multi-stage pump gradually accelerates to the rated speed.