For the use of high head submersible pumps, our main focus is on drainage. However, many people are not familiar with the control of water output and flow. Next, we will explain various methods for adjusting the flow control of submersible pumps.
1. Variable speed adjustment. Changing the speed of a submersible pump can alter its performance, thereby changing its operating point. This method is called variable speed regulation.
2. Variable diameter adjustment. After the impeller is turned, the performance of the water pump will change according to certain rules, thereby changing the operating point of the water pump. We refer to the method of changing the operating point of the water pump by turning the impeller as variable diameter adjustment.
3. Angle adjustment. Changing the installation angle of the blades can alter the performance of the water pump, thereby achieving the goal of changing the operating point of the submersible pump. This way of changing the operating point is called variable angle adjustment of the water pump.
4. Throttle adjustment. For the water pump device with a gate valve installed in the outlet pipeline, when the gate valve is closed, local resistance increases in the pipeline, and the pipeline characteristic curve becomes steeper, causing the operating point to move upward to the left along the Q-H curve of the water pump. The smaller the gate valve is closed, the greater the resistance and the smaller the flow rate. This method of changing the operating point of the water pump by closing the gate valve is called throttling regulation or variable valve regulation.
