Reasons for inconsistent resistance of water pump system
The reasons for the mismatch of the water pump system resistance may involve multiple aspects, mainly including the water pump itself, the pipeline system, the medium characteristics and the operating conditions. The following is a specific analysis of these reasons:
1. Water pump itself factors
The water pump model does not match the system design:
If the model specification parameters of the water pump do not match the design or actual situation, it may cause the water pump performance to not match the actual resistance
of the pipeline, and then cause the system resistance to mismatch.
Degradation of water pump performance:
After long-term use, the water pump may cause performance degradation due to wear and corrosion, such as impeller wear, seal aging, etc., which may increase the system resistance.
Water pump installation problems:
Improper installation of the water pump, such as loose connection of the inlet and outlet pipes and unreasonable pipeline layout, may lead to increased system resistance.
2. Pipeline system factors
Pipe diameter and flow rate problems:
If the diameter of the water pump inlet and outlet pipe sections is too small or the flow rate is too high, it will cause a large pressure loss, thereby increasing the system resistance.
Irrational pipeline layout, such as too many elbows, tees and other pipe fittings, will also increase the resistance of the fluid.
Resistance of pipeline accessories:
Valves, filters and other accessories installed on the pipeline will also increase system resistance if the resistance is too large or improperly configured.
Pipeline cleanliness:
If impurities or scaling are retained in the pipeline, the effective flow area of the pipeline will be reduced and the resistance of fluid flow will be increased.
III. Medium characteristic factors
Medium viscosity:
The greater the viscosity of the medium, the greater the resistance of fluid flow.
Medium temperature:
Changes in medium temperature may affect the physical properties of the fluid, such as density, viscosity, etc., and thus affect the system resistance.
Medium solid content:
Solid particles contained in the medium may clog the pipeline or wear the pump body, increasing system resistance.
IV. Operating condition factors
Operating flow deviates from the design value:
If the operating flow of the water pump deviates from the design value, whether it is too large or too small, it may cause the system resistance to be inconsistent.
System pressure fluctuation:
The fluctuation of system pressure may affect the performance of the water pump and pipeline, thereby changing the system resistance.
V. Other factors
Irrational system design:
The combined influence of various factors may not be fully considered at the beginning of system design, resulting in the system resistance not being consistent with the design value during actual operation.
Improper operation:
If the operator does not operate the water pump properly, such as frequent starting and stopping, overloading, etc., it may cause damage to the water pump and piping system, thereby affecting the system resistance.
