How to choose the system pipe diameter of micro gear pump

When designing and selecting a micro gear pump system, the choice of pipe diameter is crucial. The correct pipe diameter not only ensures the efficient operation of the system, but also prolongs the service life of the equipment. The following are several key factors to consider when selecting the pipe diameter of a micro gear pump system.

1. Flow demand
First, the flow demand of the system needs to be determined. Flow refers to the volume of liquid passing through the pipeline per unit time, usually in liters per minute (L/min) or gallons per minute (GPM). Flow demand directly affects the choice of pipe diameter, because a small pipe diameter will lead to a high flow rate, increase the pressure loss and energy consumption of the system; while a large pipe diameter will increase the cost and space occupied by the system.

2. Pressure requirements
The operating pressure of the system is also an important factor in choosing the pipe diameter. High-pressure systems usually require a smaller pipe diameter to maintain the required pressure, but this will also increase the flow rate and friction loss. Therefore, in high-pressure systems, a balance needs to be found between pipe diameter and pressure.

3. Liquid properties
The viscosity and density of the liquid have a direct impact on the choice of pipe diameter. High-viscosity liquids will produce greater friction resistance when flowing in the pipeline, and a larger pipe diameter needs to be selected to reduce pressure loss. Conversely, low-viscosity liquids can use smaller pipe diameters.

4. Pipeline material
The choice of pipe material will also affect the choice of pipe diameter. Pipes of different materials have different inner wall smoothness and pressure resistance. For example, metal pipes are generally more pressure-resistant than plastic pipes, but the inner wall smoothness may not be as good as plastic pipes, which will affect the flow characteristics of the fluid.

5. System layout
The layout of the system and the length of the pipe also need to be considered. When transporting liquids over long distances, the friction loss of the pipe will increase significantly, and a larger pipe diameter needs to be selected to reduce pressure loss. In addition, elbows, valves and other accessories in the system will also increase pressure loss, which needs to be considered when selecting the pipe diameter.

6. Safety factor
When selecting the pipe diameter, a certain safety factor must also be considered. The safety factor can ensure that the system can still operate normally under abnormal conditions and avoid system failures caused by improper pipe diameter selection.

Therefore, choosing the pipe diameter of the micro gear pump system is a process that comprehensively considers flow, pressure, liquid characteristics, pipe materials, system layout and safety factor. By reasonably selecting the pipe diameter, the efficient operation and long-term reliability of the system can be ensured.