The energy-saving transformation of plunger pumps can be approached from multiple aspects, and the following are some common methods:

　　Adopting variable frequency speed regulation technology: Traditional plunger pumps have a constant speed under power frequency conditions. When the flow demand changes, the flow needs to be controlled by adjusting the valve, which can result in a large amount of energy waste. The variable frequency speed regulation technology can convert the AC power of the power supply into DC power, and then convert the DC power into adjustable AC power, thereby controlling the speed of the motor and achieving stepless speed regulation. In this way, the pump speed can be automatically adjusted according to the actual flow demand, avoiding energy waste caused by "big horses pulling small cars", reducing energy consumption while also reducing the number of equipment starts and stops, and extending the service life of the pump.

　　Optimize the internal structure of the pump: Check and replace worn components such as plungers, cylinder bodies, or port plates to ensure that the clearance between the plunger and cylinder body holes is within a reasonable range, typically ≤ 0.03mm, to reduce volume leakage. At the same time, grind or replace the distribution plate to ensure the sealing performance of the suction and discharge ports. Wear resistant materials such as hard alloys and ceramic coatings are used for key friction pairs, such as plungers and cylinder bodies, or surface hardening treatments such as quenching and chrome plating are carried out to reduce the friction coefficient and minimize mechanical losses.

　　Improving the sealing system: A combination of compression packing sealing and self sealing sealing is adopted, combined with DLC (diamond-like carbon dialysis) technology to carry out wear-resistant treatment on key sealing components, which can improve sealing performance, reduce leakage, thereby improving pump efficiency and reducing energy consumption.

　　Reasonably choose the specifications and models of pumps: Based on actual work needs, accurately calculate the required flow rate and pressure, select the appropriate specifications of plunger pumps, and avoid efficiency reduction caused by pump specifications being too large or too small. If the pump operates under low load for a long time, it may be considered to replace it with a more suitable low-power pump or variable displacement pump.

　　Optimize external operating conditions: Control the working pressure and flow rate to avoid overpressure operation, keep the system pressure within the rated value, set the safety pressure through the relief valve, and ensure that the pump displacement is consistent with the required flow rate of the system. Operate the pump at rated speed, adjust the drive motor speed according to the technical parameters of the pump, and ensure that the coaxiality deviation between the pump and the motor is ≤ 0.05mm to reduce the additional load on the bearings. In addition, select hydraulic oil with appropriate viscosity, choose hydraulic oil with high viscosity index according to the working temperature, and install high-precision oil suction and return filters to control oil pollution and temperature, and control the oil temperature at 40-60 ℃.

　　Optimize the pipeline system: shorten the pipeline length as much as possible, reduce the use of elbows and throttling elements, increase the diameter of water pipes, reduce pipeline resistance, and minimize pressure loss. At the same time, install the pump reasonably, such as installing the plunger pump diagonally, with the outlet facing the water tank, reducing bends, and avoiding energy loss caused by improper pipeline installation.