The liquid flow test bench is used in aerospace and other industrial fields to accurately simulate the flow of liquids under different working conditions, mainly relying on a series of advanced technologies and equipment. These technologies work together to ensure that the test bench can accurately reproduce the actual working conditions, so as to accurately test the fluid performance of fluid components such as pumps and valves.1. Test bench design and equipment selection
Frequency conversion technology: The use of frequency conversion speed regulation technology, such as frequency converters, can steplessly and accurately control the speed of the pump, thereby achieving accurate regulation of the liquid flow. The frequency converter can ensure the continuity and stability of the flow and is suitable for simulating various complex working conditions.
Sensors and measuring instruments: High-precision sensors and measuring instruments, such as electromagnetic flowmeters, turbine flowmeters, differential pressure transmitters, etc., are selected to monitor and record key parameters such as flow, pressure, and temperature in real time. The high sensitivity and high precision of these instruments ensure the accuracy and reliability of the test data.Data acquisition system: The data acquisition system collects and processes sensor data in real time, and the entire test process can be monitored and recorded throughout. Data acquisition systems usually have high sampling rates and large storage capacity, and can process large amounts of data and generate detailed test reports.Signal analysis and processing software: Use professional signal analysis and processing software, such as LabVIEW, MATLAB, etc., to conduct in-depth analysis of the collected data. These software can identify and process various complex information in the signal, and provide comprehensive performance evaluation and optimization suggestions.
2. Technical means to simulate different working conditions
Pressure regulation system: The test bench is equipped with a pressure regulation system, which can apply different back pressures and inlet pressures as needed. By adjusting the combination of valves and pumps, the flow of liquids under different pressure conditions can be simulated to ensure the comprehensiveness and accuracy of the test.
Temperature control system: Installing a temperature control system, such as a heater and a cooler, can control the performance of the test liquid at different temperatures. This is crucial for simulating temperature changes in the actual working environment, especially in temperature-sensitive fields such as aerospace.Fluid circulation system: Design an efficient fluid circulation system to ensure that the test liquid can circulate quickly and be evenly distributed during the test. The circulation system usually includes components such as filters and buffer tanks to maintain the cleanliness and stability of the fluid.Multiple test modules: The test bench should have multiple test modules that can simulate different working conditions and failure modes. For example, different flow channel lengths, valve openings, pump parameters, etc. can be set to test the performance of pumps, valves and other components under various complex conditions.3. Application CasesPump performance test: In the aerospace field, liquid flow test bench is often used to test the performance of various pumps, such as fuel pumps, hydraulic pumps, etc. By simulating the flow and pressure under different working conditions, key performance indicators such as pump head, efficiency, and pressure resistance can be evaluated.Valve test: For the performance test of various valves, the test bench can simulate different opening and closing conditions to test the flow characteristics, leakage, response time and other parameters of the valve. This is crucial to ensure the reliability and safety of the valve in actual applications.System integration test: In complex systems, liquid flow test bench is also used for integration testing to verify the performance and stability of the entire fluid system. For example, test the fuel supply system, hydraulic control system, etc. to ensure that they can operate normally under various working conditions.In summary, the liquid flow test bench can accurately simulate the flow of liquids under different working conditions through advanced frequency conversion technology, high-precision sensors, data acquisition systems, and a variety of working condition simulation methods, providing a solid technical guarantee for the performance testing of fluid components in the aerospace and other fields. These technologies together ensure the high reliability of the test bench and the high accuracy of the test results, meeting the high requirements for fluid performance testing in complex industrial fields.
