An aeroengine component performance water medium test platform and method

Abstract

The application discloses an aero-engine component performance water medium test platform and method, which is mainly suitable for full working condition performance test of engine control system, supply system and other sub-systems, and performance test of components such as gas generator, booster pump, nozzle and valve. The application mainly comprises a low-pressure water test system, a high-pressure water test system, a pressure regulating system and a measurement and control system. The low-pressure and high-pressure water test systems can be provided with one or more parallel test loops and tested component interfaces according to actual needs. The pressure regulating system can independently or jointly pressurize each water storage tank through a low-pressure gas source and a high-pressure gas source. The measurement and control system realizes real-time acquisition of various operating parameters and dynamic control of system execution elements. The method comprises steps of test preparation, component installation, parameter setting, process control and the like. The application has compact structure, convenient operation, can realize wide-range flow pressure regulation of multiple flow paths, and can simulate wide working condition performance of multiple types of engine systems and components.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aero-engine test, and relates to a liquid medium test system and component performance test technology, in particular to an aero-engine component performance water medium test platform, which is mainly suitable for full-condition performance test of engine control systems, supply systems and other subsystems, and performance test of components such as gas generators, booster pumps, nozzles and valves. BACKGROUND

[0002] In recent years, with the development of new-principle and new-technology aero-engines such as turbo-rocket engines and multi-electric engines, the performance test content of engine subsystems (such as control systems and propellant supply systems) and main components (such as various booster pumps, nozzles, regulating valves and gas generators) is becoming more and more complex, and the requirements for related test systems and platforms are becoming higher and higher. The performance evaluation of engine systems has shifted from traditional single-component performance verification to complex system-level integrated test, which puts higher requirements on the universality, adaptability and test capacity of the test platform.

[0003] In the ground test of aero-engine components and systems, the properties of real media such as liquid oxygen and kerosene required by the engine for operation have high requirements on the test site and test system. Generally, water medium is used to replace real media to carry out tests, mainly because of the high availability, safety and fluid characteristics of water medium, which can simulate the flow and pressure changes under real working conditions to a certain extent. This alternative test method greatly reduces the test risk and simplifies the test facility requirements. However, the existing water medium test platform still has many limitations in terms of system structure, functional integration and test capacity.

[0004] Firstly, the existing water medium test platform usually presents the characteristics of single function and physical separation. Specifically, for the test requirements of different types of components, independent special test facilities need to be built and maintained. For example, booster components such as pumps are tested on low-pressure water test platforms, and pressure-reducing components such as nozzles and valves are tested on high-pressure water test platforms, so engine component tests cannot be completed on the same test platform. This separated test mode can meet the test requirements of single-type components, but it leads to repeated construction and scattered management of test resources, increasing the cost of facility investment and operation and maintenance.

[0005] Meanwhile, the general water test platform cannot carry out system-level test of multiple components of the engine. For example, the outlet pressure fluctuation of the fuel booster pump will directly affect the working state of the downstream fuel regulator and nozzle; the storage tank pressure, pipeline characteristics, pump performance and changes of the downstream load will jointly determine the dynamic response characteristics of the entire supply system. Relying only on performance test of individual components on independent platforms cannot comprehensively and truly reflect the working performance of the components in the actual system environment, and it is more difficult to evaluate the cooperative working performance, stability and dynamic response characteristics of the entire subsystem in various working modes.

[0006] Thirdly, the existing water medium test platform has a limited ability in simulating the full working condition performance of the engine. Whether it is low pressure or high pressure, the regulation range, regulation accuracy and dynamic response ability of the flow and pressure are often limited, and it is difficult to accurately cover all working condition points from starting, low speed to high speed, from idle to maximum afterburning state, especially difficult to simulate extreme working condition conditions or rapid dynamic transition process.

[0007] In summary, the existing water medium test technology of aero-engine components generally has many problems such as complex and large test platform, high test cost, long test cycle, difficult to verify extreme working conditions, insufficient system integration capability, etc. Therefore, how to construct a water medium test platform with compact structure, high functional integration, capable of realizing multi-flow path, wide range of flow and pressure accurate regulation and simulation, which can meet the full working condition performance test requirements of various key components and support complex system-level comprehensive performance verification, is a technical problem to be solved in the field of aero-engine test technology. SUMMARY

[0008] (I) Invention purposes

[0009] In view of the above defects and deficiencies of the existing aero-engine component water medium test platform, in order to solve at least one of the above and other technical problems in the prior art, the present application aims to provide an aero-engine component performance water medium test platform and method. By integrating low-pressure and high-pressure water test systems, combining adjustable pressure regulating systems and high-precision measurement and control systems, a composite water medium test platform with multiple circuits, multiple pressure levels, wide flow range and full working condition adaptability is constructed, which realizes wide working condition performance test of engine supercharging components and pressure reducing components on a single platform. The flow, pressure and other parameters can cover the full working condition requirements of the engine components, which can not only carry out aero-engine component performance test, but also complete system-level performance test, significantly improve the integration and adaptability of the test platform, effectively reduce the development cost of the engine components, shorten the test cycle, widen the performance verification range, and meet the comprehensive performance evaluation requirements of modern aero-engine from component level to system level.

[0010] (II) Technical solutions

[0011] To achieve the object of the present application and solve the technical problems, the present application adopts the following technical solutions.

[0012] The first object of the present application is to provide an aero-engine component performance water medium test platform, which is used for engine control system, supply system subsystem full working condition performance test and performance test of gas generator, booster pump, nozzle, valve components, etc., and at least includes:

[0013] The low-pressure water test system includes a low-pressure water storage tank and a booster pump test circuit, each circuit is provided with a test section for installing a measured booster pump, a water inlet control element, a pump front parameter measurement element are arranged between the upstream of the test section and the water outlet of the water storage tank, a pump rear parameter measurement element, a safety protection element, a load simulation adjusting device and a water return control element are arranged between the downstream of the test section and the water return port of the water storage tank;

[0014] The high-pressure water test system includes a high-pressure water storage tank, a water return tank, a booster pump test circuit and a pressure reducing component test circuit, the booster pump test circuit has the same structure as the corresponding circuit of the low-pressure water test system, the pressure reducing component test circuit shares part of the front end water inlet control and measurement elements with the booster pump test circuit, and then connects the pressure reducing component test section through a three-way branch, independent pressure measurement and water inlet control elements are independently arranged in front of the test section, and after the test is completed, the water medium enters the water return tank and is pumped back to the high-pressure water storage tank by the water return pump;

[0015] The pressure regulating system includes an air compressor, a high-pressure gas source and a gas collecting pipe, the low-pressure output end of the air compressor is communicated with the gas collecting pipe, and the low-pressure output end is communicated with the low-pressure water storage tank through a low-pressure pressure regulating valve, the high-pressure output end is communicated with the high-pressure water storage tank through a high-pressure pressure regulating valve, and a stop valve is arranged behind each pressure regulating valve to control the on-off of the booster gas, and the high-pressure gas source is communicated with the high-pressure water storage tank through the high-pressure pressure regulating valve and the stop valve behind the high-pressure pressure regulating valve to provide auxiliary pressure boosting when high pressure is needed;

[0016] The measurement and control system is communicatively connected with the tested components, measurement elements, control elements and load simulation adjusting devices in each system, real-time collection of various related operating parameters, dynamic adjustment of each execution element, cooperative control of each system action, performance test and evaluation of the tested components under different pressure levels and working conditions are realized.

[0017] The second object of the present application is to provide an aero-engine component performance water medium test method based on the above-mentioned aero-engine component performance water medium test platform of the present application, and the test method at least includes the following steps when implemented:

[0018] SS1. Preparation before test:

[0019] Start the low-pressure water test system and the high-pressure water test system, check whether the pipeline connection is correct, confirm that the water medium liquid level in the low-pressure water tank and the high-pressure water tank meets the test requirements; start the pressure regulating system, set the target pressure value of the low-pressure water tank and the high-pressure water tank according to the test requirements; start the measurement and control system, check whether the communication connection of each measurement element, execution element and load simulation adjusting device is normal;

[0020] SS2. Test component installation and pipeline communication:

[0021] Install the test component on the test section of the corresponding low-pressure water test system and / or high-pressure water test system; connect the measurement end of the related sensor element with the corresponding position of the test component for real-time monitoring of the operating parameters of the test component, and connect the control end of the test component with the measurement and control system in communication;

[0022] SS3. Test loop on-off and parameter setting:

[0023] According to the test requirements, select the pressure regulating mode, start the air compressor when a low-pressure environment is needed, supply air to the low-pressure water tank through the low-pressure regulating valve, switch to the high-pressure gas source when a high-pressure environment is needed, supply air to the high-pressure water tank through the high-pressure regulating valve, so that the pressure of the water tank reaches the set value; through the measurement and control system, control the water inlet control element, the backwater control element and the related stop valve in each loop to be opened, set the test target parameters including the target pressure, flow, temperature and load simulation path, and load the required control program for the test;

[0024] SS4. Test process control and data acquisition:

[0025] After entering the test state, according to the preset test scheme, the measurement and control system acquires real-time related operating parameters, controls the execution element and the load simulation adjusting device, dynamically adjusts the system pressure and flow resistance conditions, forms a full coverage working condition scanning of the working domain of the measured component, and adjusts the pressure of each water tank through the pressure regulating system combined with the air source, so as to realize dynamic performance simulation test of the engine component under multiple working conditions;

[0026] SS5. Data analysis and test end:

[0027] After the test is completed, according to the preset program, close the related water inlet and outlet control elements and execution elements, release the pressure of each tank, and recover the test water medium; the measurement and control system processes and analyzes the collected data to generate the performance curve, characteristic map and / or evaluation report of the test component.

[0028] (Three) Technical effects

[0029] Compared with the prior art, the aviation engine component performance water medium test platform and method has the following beneficial and remarkable technical effects:

[0030] (1) The present application expands the function of the ordinary water test platform, uses water to replace low-temperature, flammable, explosive or toxic propellants, simulates its working characteristics, improves the utilization rate of equipment, shortens the test cycle, and broadens the performance verification working conditions. The present application broadens the flow pressure regulation range, can carry out liquid rocket engine, conventional aero-engine, air turbine rocket engine, combined engine and other aerospace power components and system tests, and has universality.

[0031] (2) The test platform proposed in the present application integrates a low-pressure water test system and a high-pressure water test system, constructs a multi-loop structure, can independently carry out single performance test of components such as booster pump, nozzle and valve, and can also cooperatively carry out system cascade regulation and verification of engine control system and supply system, realizes comprehensive coverage of test objects and test conditions, and solves the problems of dispersed function and repeated configuration of traditional platform.

[0032] (3) The present application constructs a pressure regulating system with a two-stage pressure regulating path, controls the pressure of the low-pressure and high-pressure storage tanks through the air compressor and the high-pressure gas source, realizes multi-grade dynamic adjustment of the water medium supply pressure, and effectively simulates the actual running environment of the engine under starting, variable working condition and limit state. In addition, the present application constructs a variable path flow path through a load simulation regulating device, realizes adjustable flow resistance and high response loading capacity, cooperates with multiple parameter measurement elements and execution control elements, can dynamically adjust the system state and realize full-process monitoring of key performance indicators. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic diagram of the aero-engine component performance water medium test platform of the present application.

[0034] Figure 2 is a schematic diagram of the low-pressure and high-pressure water medium test system in the present application.

[0035] Figure 3 is a schematic diagram of the pressure regulating system in the present application.

[0036] Figure 4 is a flow chart of the aero-engine component performance water medium test method of the present application.

[0037] The reference numerals in the drawings are explained as follows:

[0038] 100 - low pressure water test system, 110 - booster pump test circuit I, 120 - pump pressure test circuit II, 130 - low pressure water tank, 200 - high pressure water test system, 210 - pump pressure test circuit III, 220 - pump pressure test circuit IV, 230 - component pressure reduction circuit, 240 - high pressure water tank, 250 - return water tank, 300 - pressure regulating system, 300 - pressure regulating system, 301 - air compressor, 302 - high pressure air source, 303 - air collection pipe, 304 - pressure regulating valve, 305 - stop valve, 306 - vacuum pump, 307 - control valve, 308 - filter, 400 - measurement and control system, 410 - data acquisition module, 420 - control module, 430 - equipment management module, 1 - manual stop valve, 2 - pre-pump pneumatic stop valve, 3 - filter, 4 - flow meter, 5 - load simulation device, 6 - post-pump pneumatic stop valve, 7 - check valve, 8 - water cooling unit, 9 - water softener, 10 - return water pump. DETAILED DESCRIPTION

[0039] The present application aims to provide an aero-engine component performance water medium test platform and method. In order to better understand the present application, the content of the present application will be further illustrated below in combination with embodiments, so that the advantages and features of the present application can be more easily understood by those skilled in the art. It should be noted that the following description is only a preferred embodiment of the present application, but the content of the present application is not limited to the following embodiments.

[0040] Example 1: Test platform

[0041] As shown in Figure 1 , Figure 2 , the aero-engine component performance water medium test platform of the present application is used for engine control system, supply system subsystem full working condition performance test and gas generator, booster pump, nozzle, valve component performance test. The test platform mainly includes a low pressure water test system 100, a high pressure water test system 200, a pressure regulating system 300, a measurement and control system 400, etc. Specifically:

[0042] The low pressure water test system 100 in the embodiment of the present application includes a low pressure water tank 130 and a booster pump test circuit. The water medium in the low pressure water tank 130 is supplied from the outlet to each circuit component and then returned to the water tank for recycling. The low pressure water tank 130 is provided with softening and filtering devices, liquid level measuring devices, pressure sensors and temperature sensors. The softening and filtering devices (such as a water softener 9, see Figure 2 ) are used to reduce the hardness of the water medium and remove impurities to prevent corrosion and blockage of the test devices and pipelines. The liquid level measuring devices use multi-point liquid level sensors to monitor the liquid level height in the tank in real time to prevent pump cavitation or overflow. The pressure and temperature sensors monitor the pressure and temperature parameters in the tank, respectively, to provide a basis for parameter control and data analysis during the test process.

[0043] The booster pump test circuit includes booster pump test circuit I 110 and booster pump test circuit II 120 arranged in parallel, or more booster pump test circuits are arranged to support different types of booster pumps to perform performance tests at the same time, each circuit forms an independent closed circulation path, and each circuit is respectively provided with a booster pump test section I and a booster pump test section II.

[0044] The water inlet control element includes a water outlet manual stop valve 1, a filter 3, and a pump front pneumatic stop valve 2, the water return control element includes a pump rear pneumatic stop valve 6 and a check valve 7, the manual stop valve is used for overall control of the system and manual intervention in an emergency, the pneumatic stop valve is in communication connection with the measurement and control system to realize remote control, and the pneumatic stop valve is preferably designed as a normally closed type and is automatically closed when the system loses pressure or the power supply is interrupted; the safety protection element is preferably a safety valve, the set jump pressure of which is 10% to 15% higher than the maximum working pressure of the circuit, and is used for preventing abnormal overpressure of the system pressure; the pump front parameter measurement element includes a flow meter 4 and a pump front pressure sensor in communication connection with the measurement and control system, and is used for measuring the working condition parameters of the booster pump inlet; and the pump rear parameter measurement element includes a pump rear pressure sensor and a temperature sensor in communication connection with the measurement and control system, and is used for monitoring the outlet parameters of the booster pump and the state parameters of the water medium.

[0045] As preferred, at least one booster pump test circuit is provided with a water cooling unit 8 (as shown in Figure 2 The water cooling unit 8 is in communication connection with the measurement and control system, adjusts the water medium temperature through heat exchange, avoids the temperature of the water medium from rising for a long time, and affects the equipment performance and the accuracy of the test results. In addition, the booster pump test circuit is provided with a load simulation adjustment device 5, which is preferably in electric control mode and in communication connection with the measurement and control system, includes an adjustable throat structure, a high-precision displacement motor, and a position feedback device, the throat flow area is adjusted by the displacement motor to change in the range of 0 to 100% of the pipe diameter, the load conditions of the flow and pressure of the measured booster pump are matched, and the position feedback device feeds back the throat opening degree to the measurement and control system in real time to realize simulation of the full working condition flow and load pressure of the engine.

[0046] The high-pressure water test system 200 in the embodiment of the application includes a high-pressure water storage tank 240, a water return tank 250, a booster pump test circuit, and a pressure reduction component test circuit, the water medium in the high-pressure water storage tank 240 is supplied from an outlet to each circuit component and then returns to the water storage tank for recycling, and the same is preferably provided with softening and filtering devices, liquid level measurement devices, pressure sensors, temperature sensors, and the like. The booster pump test circuit has the same circuit structure as the water test low-pressure system (as shown in Figure 2As shown in the figure, the booster pump test circuit can be configured as one, two, or more parallel structures as needed (the figure shows two parallel booster pump test circuits, Ⅲ210 and Ⅳ220), to support simultaneous performance testing of booster pumps of different models or parameter configurations. The pressure reduction component test circuit shares some front-end inlet water control and measuring elements with the booster pump test circuit (e.g., they can share the outlet manual shut-off valve 1, filter 3, and flow meter 4, etc.). Figure 2 As shown), the pressure reduction component test section is then connected via a three-way diversion. An independent pressure measurement and water inlet control element is provided before the test section (preferably, a pressure sensor for measuring the pressure before and after the test section and a pneumatic shut-off valve before the test piece are independently installed, and both are connected to the measurement and control system). After the test is completed, the water medium enters the return water tank 250 and is pumped back to the high-pressure water storage tank 240 by the return water pump 10.

[0047] Similarly, at least one of the booster pump test circuits in the high-pressure water test system 200 is preferably equipped with a water-cooling unit that is connected to the measurement and control system to prevent the water medium temperature from rising during long-term testing, which would affect the equipment performance and the accuracy of the test results. Furthermore, the load simulation adjustment device installed on each booster pump test circuit has a similar structure and configuration to that of the low-pressure water test system 100.

[0048] The voltage regulating system 300 in this embodiment of the invention, such as Figure 3 As shown, it mainly includes an air compressor 301, a high-pressure air source 302, and an air collection pipe 303. The low-pressure output end of the air compressor 301 is connected to the air collection pipe, and then connected to the low-pressure and high-pressure water storage tanks 130 and 240 respectively through low-pressure and high-pressure regulating valves 304. Each regulating valve 304 is equipped with a shut-off valve 305 to control the supply and demand of the booster air. The high-pressure air source 302 is connected to the high-pressure water storage tank 240 through the high-pressure regulating valve and its shut-off valve to provide auxiliary boosting when high pressure is required.

[0049] Specifically, the air compressor 301 is used to provide a low-pressure gas source, which is preferably provided with a filter 308 between the air compressor 301 and the gas collecting pipe 303 to filter impurities in the gas source; the high-pressure gas source 302 is preferably a high-pressure nitrogen cylinder group, which supplies gas to the high-pressure water tank 240 through a high-pressure pressure regulating valve and a stop valve arranged after the high-pressure pressure regulating valve, and a stop valve 309 is arranged at a position upstream of the access point of the high-pressure pressure regulating valve and the cylinder group, which is closed when the cylinder group is supplying high-pressure gas, to prevent high-pressure gas from flowing backward into the gas collecting pipe 303; the gas collecting pipe 303 is used to collect and distribute the gas source; the low-pressure and high-pressure pressure regulating valves 304 are used to regulate the pressure of the gas entering the low-pressure and high-pressure water tanks, respectively; and the stop valves 305 arranged after the pressure regulating valves 304 are used to control the on-off of the pressurized gas. As a preferred embodiment, the pressure regulating system 300 is further provided with a vacuum pump 306 in communication with the measurement and control system, and the vacuum pump 306 is in communication with the gas phase space of each water tank 130, 240 through a pipeline provided with a control valve 307, which is used to perform air extraction operation on the low-pressure water tank 130 or the high-pressure water tank 240 in the test preparation stage to establish a negative pressure condition, simulate a negative pressure working condition or study the cavitation boundary of the pump.

[0050] The measurement and control system 400 in the embodiment of the present application is in communication connection with the test components, measurement elements, control elements and load simulation adjusting devices in each system, collects each related operating parameter in real time, dynamically adjusts each execution element, cooperatively controls the actions of each system, and realizes performance testing and evaluation of the test components under different pressure levels and working conditions.

[0051] As a preferred embodiment, the measurement and control system is provided with a data acquisition module, a control module and a device management module, wherein: the data acquisition module is used to collect operating parameters of each key test node in the test process in real time, at least including the pressure, temperature, flow, liquid level, pump speed, load adjusting displacement and pressure parameters before and after the test components of the water medium, and transmits the data to the control module for processing and analysis; the control module is provided with a closed-loop control logic, generates and sends control instructions to each execution element in the system according to the preset test profile, real-time feedback and / or manual control instructions, realizes dynamic regulation and control of the test loop pressure, flow and load, and executes necessary safety interlocking and emergency response logic; the device management module is used to monitor and manage each device of the test platform, as well as test task configuration (such as selecting a test type, setting target parameters, editing test steps), test process start, pause, stop control, system state monitoring and fault alarm, realizes comprehensive monitoring and control of the test process, and ensures safe, reliable and efficient operation of the test.

[0052] Embodiment 2: Test method

[0053] Based on the water medium test platform for aero-engine component performance constructed in Embodiment 1, Embodiment 2 further illustrates a specific test method based on the platform. The method realizes scientific evaluation of the performance of the engine component through systematic process control and parameter adjustment. As shown in FIG. 2, the test method includes five core stages of test preparation, component installation, parameter setting, process control and data analysis, and the specific implementation steps are as follows: Figure 4

[0054] SS1. Preparation before test:

[0055] Start the low-pressure water test system and the high-pressure water test system, check whether the pipeline connections are correct, confirm that the water medium liquid level in the low-pressure water tank and the high-pressure water tank meets the test requirements, start the pressure regulating system, set the target pressure values of the low-pressure water tank and the high-pressure water tank according to the test requirements, and start the measurement and control system to check whether the communication connections of the measurement elements, the execution elements and the load simulation adjusting devices are normal.

[0056] SS2. Installation of test component and pipeline communication:

[0057] Install the test component on the test platform of the corresponding low-pressure water test system and / or high-pressure water test system, connect the measurement end of the related sensor element to the corresponding position of the test component for real-time monitoring of the operating parameters of the test component, and communicate the control end of the test component with the measurement and control system.

[0058] SS3. Test circuit on-off and parameter setting:

[0059] According to the test requirements, select the pressure regulating mode, start the air compressor when a low-pressure environment is needed, supply air to the low-pressure water tank through the low-pressure regulating valve, switch to the high-pressure gas source when a high-pressure environment is needed, supply air to the high-pressure water tank through the high-pressure regulating valve, so that the pressure of the water tank reaches the set value, control the water inlet control element, the backwater control element and the related stop valve in each circuit to be opened through the measurement and control system, set the test target parameters including the target pressure, flow, temperature and load simulation path, and load the control program required for the test.

[0060] SS4. Test process control and data acquisition:

[0061] After entering the test state, real-time acquisition of various related operating parameters is performed by the measurement and control system according to the preset test scheme, the execution elements and the load simulation adjusting devices are controlled, the system pressure and flow resistance conditions are dynamically adjusted, the full coverage of the working condition scanning of the measured component working domain is formed, and the pressure of each water tank is adjusted through the pressure regulating system combined with the gas source to realize dynamic performance simulation test of the engine component under multiple working conditions.

[0062] SS5. Data analysis and test end:

[0063] ​After the test is completed, the relevant water inlet and outlet control elements and execution elements are closed according to the preset program, the pressure of each storage tank is released, and the test water medium is recovered; the measurement and control system processes and analyzes the collected data to generate a performance curve, a characteristic map and / or an evaluation report of the tested component.

[0064] As preferred, in step SS4, the test process control includes a booster pump performance test, a pressure reducing component performance test or a system joint test test phase, wherein:

[0065] For the booster pump performance test phase, the measured booster pump is installed on the selected circuit, the water inlet control element and the backwater control element are sequentially opened, the initial flow area is set through the load simulation adjustment device, the measured booster pump is started and the speed is adjusted in steps, the load simulation device opening is synchronously dynamically adjusted, and the pre-pump pressure, post-pump pressure, flow and speed parameters are collected in real time;

[0066] For the pressure reducing component performance test phase, the pressure reducing component is installed in the test section, part of the water flow is guided into the test section of the pressure reducing component through the three-way shunt, the opening of the front-end control element is adjusted, and the pressure difference and flow data before and after the component are recorded under different inlet pressure conditions;

[0067] For the system joint test test phase, the booster pump circuits and the pressure reducing component test circuits of the low-pressure system and the high-pressure system are synchronously operated, the operation parameters of the circuits are coordinated and controlled through the measurement and control system, the medium supply characteristics under the actual working conditions of the engine are simulated, and the dynamic response data of the system are recorded.

[0068] Based on the above experimental platform and method, the aviation engine component performance water medium test platform provided by the present application can carry out multi-condition performance test of the engine booster pump. Figure 2 As shown in the figure, first, the engine booster pump is installed on the specified test section in the low-pressure water test system of the test platform, and the pipeline connection and measurement and control interface docking with the test circuit of the platform are completed. Then, the softened water medium is injected into the low-pressure water storage tank 130, after the water injection of the low-pressure water storage tank 130 is completed, the pressure regulating system pressurizes the low-pressure water storage tank, so that the internal gas phase pressure rises to the design pressure, and then the hand-operated stop valve, the pre-pump pneumatic stop valve and the post-pump pneumatic stop valve are sequentially opened to form a continuous closed liquid path. After that, the load simulation device is adjusted to the design position, the booster pump speed is adjusted to the design speed, the load simulation device opening is adjusted, the post-pump load change is simulated, and the measurement and control system collects the parameters such as tank pressure, flow, pre-pump medium pressure, pre-pump medium temperature, post-pump medium pressure, load simulation device opening and booster pump speed in the process, which are used to construct a complete booster pump performance curve for performance analysis. This test method supports variable speed and variable load test profile setting, and can realize performance evaluation of the pump component under conditions such as starting, stable operation and limit condition, thereby providing high reliability experimental support for optimization design of the engine liquid supply system.

[0069] Based on the experimental platform and method, the aviation engine component performance water medium test platform provided by the application can carry out aviation engine component performance test. Figure 2 As shown in the figure, the engine component is installed on the test component platform above the water tank in the high-pressure water test system, and the communication connection with the water system and the measurement and control system is completed. Then, the softened and filtered water medium is injected into the high-pressure water tank, after the water injection of the high-pressure tank, the pressure regulating system pressurizes the high-pressure tank to the design pressure, and the manual stop valve and the component loop pneumatic stop valve are opened in turn. The water medium with certain pressure and flow rate flows into the water tank through the test component, and the measurement and control system collects parameters such as tank pressure, flow rate, medium pressure before the test component, medium temperature before the test component, etc. during the process, so as to analyze the performance; after the test of the current working condition is completed, the pressure is released through the high-pressure water tank pressure relief pneumatic stop valve, the water medium in the water tank is pumped back to the high-pressure tank by the water pump, and after the new pressure is set through the high-pressure pressure regulating valve, the operation is repeated to obtain the performance parameters of other working conditions.

[0070] Based on the experimental platform and method, the aviation engine component performance water medium test platform provided by the application can carry out engine supply system performance test, and support the evaluation of supply capacity, response characteristics and system linkage logic under the cooperative working condition of multiple pumps. As shown in the figure, Figure 2 The multiple engine booster pumps to be tested are installed in the booster pump test loop of the low-pressure and high-pressure water test system of the test platform, and the interface connection with the water medium pipeline, the measurement and control system and the power supply system is completed. After the low-pressure water tank 130 and the high-pressure water tank 240 are filled with water, the pressure regulating system adjusts the pressure of the low-pressure water tank and the high-pressure water tank respectively, so that they respectively reach the preset propellant supply pressure value, to simulate the propellant tank pressure under the real flight working condition of the engine; then, the loop manual stop valve, the pump front pneumatic stop valve and the pump rear pneumatic stop valve are opened in turn, and the load simulation device is adjusted to the design position; after the rotation speed of each booster pump is adjusted to the target rotation speed, the opening degree of the load simulation device is adjusted to simulate the change of the real post-pump load of the engine, and the measurement and control system collects parameters such as tank pressure, flow rate, medium pressure before the pump, medium temperature before the pump, medium pressure after the pump, load simulation device opening degree, booster pump rotation speed, etc. during the process, to carry out performance analysis, simulate the supply system performance under the conditions of engine starting, variable working condition and fault protection, and thus realize the accurate characterization of the response characteristics of the engine propellant supply system under the complete working condition link.

[0071] Through the above embodiments, the purpose of the application is completely and effectively achieved. The practice verification shows that the technical scheme can effectively meet the performance test requirements of various aviation engine components, and has the advantages of convenient operation, safety and reliability, high test precision, etc. Any equivalent or simple change made according to the patent concept, features and principles of the application is included in the protection scope of the application.

Claims

1. An aeroengine component performance water medium test platform, characterized in that, The system comprises: a low-pressure water test system comprising a low-pressure water storage tank and a booster pump test circuit, each circuit being provided with a booster pump test section, an upstream water inlet control element and a pre-pump parameter measurement element between the water storage tank outlet and the downstream section, a post-pump parameter measurement element, a safety protection element, a load simulation adjustment device and a water return control element between the downstream section and the water storage tank return port; a high-pressure water test system comprising a high-pressure water storage tank, a water return tank, a booster pump test circuit and a pressure relief component test circuit, the booster pump test circuit having the same structure as the low-pressure water test system, the pressure relief component test circuit being connected to the booster pump test circuit through a tee joint after sharing the upstream water inlet control and measurement elements, and being provided with independent pressure measurement and water inlet control elements before the test section, and the water medium being returned to the high-pressure water storage tank by a water return pump after the test; a pressure regulating system comprising an air compressor, a high-pressure air source and a gas collecting pipe, the low-pressure output end of the air compressor being connected to the gas collecting pipe, and the gas collecting pipe being connected to the low-pressure and high-pressure water storage tanks through low-pressure and high-pressure pressure regulating valves, respectively, and each pressure regulating valve being provided with a stop valve to control the on-off of the booster air, and the high-pressure air source being connected to the high-pressure water storage tank through the high-pressure pressure regulating valve and the stop valve after the high-pressure pressure regulating valve to provide auxiliary pressure when high pressure is needed; a measurement and control system being communicatively connected to the test components, measurement elements, control elements and load simulation adjustment devices in each system, collecting real-time operation parameters, dynamically adjusting each execution element, and cooperatively controlling the actions of each system to realize performance testing and evaluation of the test components under different pressure levels and working conditions.

2. The water-based media test platform for aeroengine component performance according to claim 1, characterized in that: The low-pressure and high-pressure water storage tanks are each provided with softening and filtering devices, liquid level measurement devices, pressure sensors and temperature sensors which are communicatively connected to the measurement and control system, wherein the softening and filtering devices are used to reduce the hardness of the water medium and remove impurities, the liquid level measurement devices are used to monitor the liquid level in the tank in real time using multi-point liquid level sensors, and the pressure and temperature sensors are used to monitor the pressure and temperature parameters in the tank, respectively.

3. The water-based media test article platform for aeroengine components of claim 1, wherein: The booster pump test circuits in each water test system are in parallel structure, and at least one booster pump test circuit in each system is provided with a water cooling unit which is communicatively connected to the measurement and control system to adjust the temperature of the water medium through heat exchange to avoid the temperature of the water medium rising for a long time, which affects the performance of the equipment and the accuracy of the test results.

4. The water-based media test article platform for aeroengine components of claim 1, wherein: The load simulation adjustment device in each booster pump test circuit is electrically controlled and communicatively connected to the measurement and control system, and comprises an adjustable throat structure, a high-precision displacement motor and a position feedback device, the throat flow area being adjusted by the displacement motor to change within the range of 0-100% of the pipe diameter to match the flow and pressure load conditions of the booster pump to be tested, and the position feedback device feeding back the throat opening to the measurement and control system in real time to realize simulation of the full working condition flow and load pressure of the engine.

5. The water-based media test article platform for aeroengine components of claim 1, wherein: The water inlet control element comprises a water outlet manual stop valve, a filter and a pump front pneumatic stop valve, the water return control element comprises a pump rear pneumatic stop valve and a check valve, each manual stop valve is used for overall control of the system and manual intervention in an emergency, and each pneumatic stop valve is in communication connection with the measurement and control system to realize remote control; the safety protection element at least comprises a safety valve, and the jump pressure of the safety valve is set to be 10%-15% higher than the maximum working pressure of the loop; the pump front parameter measurement element at least comprises a flowmeter and a pump front pressure sensor in communication connection with the measurement and control system, and the pump rear parameter measurement element at least comprises a pump rear pressure sensor and a temperature sensor in communication connection with the measurement and control system.

6. The water medium test article rig of claim 1, wherein: The pressure reducing component test loop shares the water outlet manual stop valve, the filter and the flowmeter with the pressure boosting pump test loop, and is connected to the pressure reducing component test section through a three-way branch-off, and the independently arranged pressure measurement and water inlet control element at least comprises a pressure sensor for measuring the pressure before and after the test section and a test piece front pneumatic stop valve, and is in communication connection with the measurement and control system.

7. The water-based media test article platform for aeroengine components of claim 1, wherein: The air compressor in the pressure regulating system is used for providing a low-pressure air source, and a filter is arranged between the air compressor and the air collecting pipe; the high-pressure air source is a high-pressure nitrogen bottle group, the bottle group supplies air to the high-pressure water storage tank through a pressure regulating valve to simulate the high-pressure demand of the liquid supply system of the engine under extreme working conditions; the air collecting pipe is used for collecting and distributing air sources; the low-pressure and high-pressure pressure regulating valves are respectively used for regulating the air pressure entering the low-pressure and high-pressure water storage tanks; and stop valves arranged after the pressure regulating valves are used for controlling the on-off of the pressure boosting air.

8. The water-based medium test platform for aeroengine component performance according to claim 1 or 7, characterized in that: The pressure regulating system is further provided with a vacuum pump in communication connection with the measurement and control system, the vacuum pump is in communication with each water storage tank, and is used for performing air extraction operation on the low-pressure water storage tank and / or the high-pressure water storage tank in the test preparation stage to simulate the negative pressure condition of the engine storage tank.

9. The water-based media test article platform for aeroengine components of claim 1, wherein: The measurement and control system comprises a data acquisition module and a control module, wherein: the data acquisition module is used for acquiring the operating parameters of each key test node in the test process in real time, and transmitting the data to the control module for processing and analysis; the control module is provided with closed-loop control logic, generates and sends control instructions to each execution element in the system according to the preset test profile, real-time feedback and / or manual control instructions, and executes necessary safety interlocking and emergency response logic.

10. The water-based medium test platform for aeroengine component performance according to claim 1 or 9, characterized in that: The measurement and control system further comprises a device management module, which is used for monitoring and managing each device of the test platform, test task configuration, test process start, pause, stop control, system state monitoring and fault alarm, and realizes comprehensive monitoring and control of the test process.

11. An aeroengine component performance water medium test method based on the aeroengine component performance water medium test platform according to any one of claims 1 to 10, characterized in that, Comprise: SS1. Test preparation: start the low-pressure and high-pressure water test system, check whether the pipeline connection is correct, confirm that the water level in each water storage tank meets the test requirements; start the pressure regulating system, set the target pressure value of each water storage tank according to the test requirements; start the measurement and control system, check whether the communication connection of each element is normal; SS2. Install the test component and connect the pipeline: install the test component on the corresponding test section; connect the related sensor elements to the measurement end of the test component for real-time monitoring of the operating parameters of the test component, and connect the control end of the test component to the measurement and control system; SS3. Test circuit on-off and parameter setting: according to the test requirements, select the pressure regulating mode, start the air compressor when low pressure environment is needed, supply air to each water tank through the pressure regulating valve, switch to high pressure gas source when high pressure environment is needed, supply air to high pressure water tank through high pressure pressure regulating valve; control each inlet and return water control element to open through the measurement and control system, set the test target parameters, and load the test required control program; SS4. Test process control and data acquisition: according to the preset test scheme, real-time acquisition of each related operating parameter, control of each control element and load simulation adjusting device, dynamic adjustment of system pressure and flow resistance conditions, full coverage of working condition scanning of the measured component working area, and adjustment of each water tank pressure through the pressure regulating system combined with the gas source, realize the dynamic performance simulation test of engine components under multiple working conditions; SS5. Data analysis and test end: after the test is completed, close the related inlet and return water control elements according to the preset program, release the pressure of each tank, and recover the test water medium; the measurement and control system processes and analyzes the collected data to generate performance curve, characteristic map and / or evaluation report of the tested component.

12. An aircraft engine component performance water medium test method in accordance with claim 11, characterized by: In the above step SS4, the test process control includes booster pump performance test, pressure reducing component performance test or system joint test test phase, wherein: For the booster pump performance test phase, install the measured booster pump on the selected circuit, open the inlet and return water control elements in turn, set the initial flow area through the load simulation adjusting device, start the measured booster pump and adjust the speed in steps, synchronously dynamically adjust the opening of the load simulation device, real-time acquisition of pump front pressure, pump rear pressure, flow and speed parameters; For the pressure reducing component performance test phase, install the pressure reducing component in the test section, divert part of the water flow into the pressure reducing component test section through the three-way shunt, adjust the opening of the front-end control element, and record the pressure difference and flow data before and after the component under different inlet pressure conditions; For the system joint test test phase, simultaneously run the low and high pressure water test system booster pump circuit and pressure reducing component test circuit, coordinate the control of each circuit operating parameter through the measurement and control system, simulate the medium supply characteristics under the actual working condition of the engine, and record the system dynamic response data.

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