The detection methods of electro-hydraulic pumps usually involve multiple aspects to ensure that their performance, reliability, and safety meet relevant standards and requirements. The following are some common electro-hydraulic pump detection methods:

1. Flow detection
Zero pressure difference flow test:
Immerse the electro-hydraulic pump as a whole under the liquid surface to fill the pump cavity with liquid.
Ensure that no liquid flows out of the outlet when the piezoelectric vibrator is not energized to eliminate other interference factors.
Use the equivalent mass measurement method to measure the change in the mass of the liquid in the container within a certain period of time and convert it into volume flow.
Flow test under specified conditions:
Under standard operating voltage and temperature conditions, test whether the flow rate of the electro-hydraulic pump meets the specified range.
This helps to ensure that the electro-hydraulic pump can provide stable flow output under different working conditions.
2. Pressure detection
Head test:
Measure the minimum head that the electro-hydraulic pump can achieve under normal working conditions.
This helps to ensure that the coolant can overcome the system resistance and circulate effectively in the system.
Back pressure test:
Use the zero flow pressure difference method to convert the rise height of the liquid level during operation into the output pressure.
This helps to understand the pressure change of the electro-hydraulic pump under load conditions.
3. Efficiency test
Energy conversion efficiency test:
Efficiency is calculated by measuring the input power and the actual output water power.
High-efficiency electro-hydraulic pumps can reduce power consumption and improve energy efficiency.
4. Durability test
Continuous operation test:
Continuous operation test for thousands of hours is carried out to simulate the use of electro-hydraulic pumps under different mileage and working conditions.
This helps to evaluate the durability and long-term stability of electro-hydraulic pumps.
Temperature cycle test:
Repeated cycle test under extreme temperature conditions to test the sealing performance, material properties, and overall reliability of electro-hydraulic pumps.
This helps to ensure that electro-hydraulic pumps can work properly under different climatic conditions.
5. Electrical performance test
Insulation resistance test:
Measure the insulation resistance value of the electro-hydraulic pump to ensure that it is higher than the specified safety standard.
This helps to prevent leakage and ensure safe use.
Voltage resistance test:
Verify that the electro-hydraulic pump can withstand the specified voltage without breakdown.
This helps to ensure the safety of the electro-hydraulic pump under high-pressure conditions.
6. Vibration and shock test
Vibration test:
The electro-hydraulic pump is subjected to vibration tests of different frequencies and amplitudes.
This helps ensure that the structure of the electro-hydraulic pump is strong and the internal electrical connection is stable.
Impact test:
The electro-hydraulic pump is subjected to an impact test at a specified height.
This helps to evaluate the electro-hydraulic pump's ability to withstand external force impact.
VII. Appearance and function inspection
Appearance inspection:
Check whether the appearance of the electro-hydraulic pump has defects, such as cracks, deformation, etc.
Ensure that the panel characters are clear and the functional switches are in normal condition.
Functional test:
Test the various functions of the electro-hydraulic pump, such as starting, stopping, speed regulation, etc.
This helps to ensure that the electro-hydraulic pump can perform its expected functions under normal working conditions.
In summary, the detection methods of electro-hydraulic pumps involve many aspects, including flow, pressure, efficiency, durability, electrical performance, vibration and shock, appearance and function, etc. Through comprehensive testing, it can be ensured that the performance, reliability and safety of the electro-hydraulic pump meet the relevant standards and requirements.