High-altitude performance test equipment for environmental control system

Abstract

The utility model discloses high-altitude performance test equipment for an environmental control system. The high-altitude performance test equipment comprises an air compressor, an air collection tank, an electric valve, a high-altitude environmental chamber, a quick coupler, a pressure sensor, a mass flowmeter, a temperature sensor, a safety valve, an air filter, a vacuum pump unit, an evaporator assembly, a fan, a compressor, a condenser assembly, a valve body assembly, an alternating current power supply and a direct current power supply. According to the utility model, the vacuum pump unit and the refrigerating unit are adjusted to meet the test conditions of test items of the technical requirements of the environmental control system assembly, the on-off connection between the air source and the high-altitude environmental chamber can be easily realized through the quick coupler, the simulation test result of the environmental control system assembly is accurate, and the test device is suitable for testing different types of environmental control systems.

Description

Technical Field

[0001] This utility model relates to a high-altitude performance testing device for environmental control systems, belonging to the technical field of fluid testing and low-temperature and low-pressure environment testing. Background Technology

[0002] With the continuous development of aviation technology, the technological updates and iterations of various aircraft are becoming increasingly rapid. Faced with the emergence of various new products, the evaluation of their technical parameters, quality, safety, economy, production cycle, and test results is becoming increasingly stringent. As one part of this process, test results are particularly important for the research and development of new products, as they can evaluate whether a new product has met the design requirements.

[0003] Currently, to reduce the risk of malfunctions after the sub-components are assembled into a system and then put into flight testing, system-level tests are often conducted on the ground to confirm that the environmental control system meets design requirements. This testing method effectively avoids greater losses due to individual malfunctions after installation. The sub-components (environmental control system components) that need to be tested in the environmental control system include rotating machinery products, air shut-off valves, and the air intake piping of the environmental control system. Among them, rotating machinery products refer to products with motors and impellers, such as booster fans, exhaust fans, ventilation and cooling fans, engine cooling fans, and equipment ventilation fans.

[0004] For the reasons mentioned above, it is necessary to design a device that can be used for high-altitude performance testing of various environmental control systems. This device should be able to simulate the working environment of the environmental control system under different temperatures and air pressures in the laboratory, conduct high-altitude performance testing on the components of the environmental control system, obtain accurate test data, and evaluate the high-altitude performance of the components. Summary of the Invention

[0005] The present invention aims to provide a high-altitude performance testing device for environmental control systems to meet the high-altitude performance testing requirements of various existing environmental control systems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] High-altitude performance testing equipment for environmental control systems includes:

[0008] A compressed air assembly, comprising an air compressor, an air collection tank, a first electric valve, and a first mass flow meter connected in sequence according to the air output direction, wherein the outlet side of the first mass flow meter is connected to the inlet end of the air inlet pipe, and a mass flow meter and a pressure sensor are installed on the air inlet pipe;

[0009] The high-altitude environment chamber is equipped with a second pressure sensor, a temperature sensor, a safety valve, and a quick-connect coupling. The quick-connect coupling connects the inlet end on the outside of the high-altitude environment chamber to the outlet end of the air intake pipe, and the outlet end inside the high-altitude environment chamber to the filter.

[0010] A vacuum pump unit, which is connected to a high-altitude environment chamber;

[0011] The refrigeration unit includes an evaporator assembly, a condenser assembly, a valve body assembly, a compressor, a first fan, and a second fan, wherein the evaporator assembly and the first fan are installed inside the high-altitude environment chamber;

[0012] A power supply assembly, which is connected to the high-altitude environment chamber, includes an AC power supply and a DC power supply.

[0013] As one solution:

[0014] The intake pipeline includes a first pipeline and a second pipeline. The inlet ends of the first pipeline and the second pipeline are respectively connected to the outlet side of the first mass flow meter. The first pipeline is equipped with a third mass flow meter and a first pressure sensor in sequence, and the second pipeline is equipped with a second electric valve, a third pressure sensor and a second mass flow meter in sequence.

[0015] The quick-connector includes a first quick-connector and a second quick-connector. The inlet end of the first quick-connector is connected to the outlet end of the first pipeline, and the inlet end of the second quick-connector is connected to the outlet end of the second pipeline. Inside the high-altitude environmental chamber, a second air filter and a fourth mass flow meter are sequentially connected to the outlet end of the first quick-connector. Inside the high-altitude environmental chamber, a first air filter and a fifth mass flow meter are sequentially connected to the outlet end of the second quick-connector.

[0016] Alternatively, the vacuum pump unit may include a first vacuum pump unit and a second vacuum pump unit that are independent of each other.

[0017] Alternatively, the power supply assembly includes a 115V AC power supply, a 600V DC power supply, and a 60V DC power supply.

[0018] Compared with the prior art, this utility model provides a testing device for high-altitude performance testing of environmental control systems. It simulates the working environment of the environmental control system at high altitude through a high-altitude environmental chamber, adjusts the pressure of the high-altitude environmental chamber through a vacuum pump assembly, adjusts the temperature of the high-altitude environmental chamber through a refrigeration unit, and provides multiple airflows through a compressed air assembly to meet the flow test requirements of environmental control systems with different intake air quantities. Attached Figure Description

[0019] Figure 1 This is a connection diagram of the high-altitude performance testing equipment for the environmental control system of this utility model;

[0020] In the diagram: 1-Air compressor; 2-Air collection tank; 3-First electric valve; 4-First mass flow meter; 5-High-altitude environmental chamber; 6-First quick-connect coupling; 7-First pressure sensor; 8-Third mass flow meter; 9-Second electric valve; 10-Second pressure sensor; 11-Second mass flow meter; 12-Temperature sensor; 13-Safety valve; 14-Third pressure sensor; 15-Second quick-connect coupling; 16-First air filter; 17-First air shut-off valve; 18-Evaporator Generator assembly; 19-First fan; 20-Compressor; 21-Second fan; 22-Condenser assembly; 23-Valve body assembly; 24-Fifth mass flow meter; 25-First rotating machinery product; 26-115V power supply; 27-600V power supply; 28-60V power supply; 29-Second rotating machinery product; 30-First vacuum pump unit; 31-Fourth mass flow meter; 32-Second vacuum pump unit; 33-Second air shut-off valve; 34-Second air filter. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. Any modifications, substitutions and alterations made based on ordinary technical knowledge and conventional means in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0022] like Figure 1 As shown, the high-altitude performance testing equipment for the environmental control system includes a compressed air assembly, a high-altitude environmental chamber 5, a vacuum pump unit, a refrigeration unit, and a power supply assembly, among which:

[0023] The compressed air assembly is connected in sequence to an air compressor 1, an air collection tank 2, a first electric valve 3, and a first mass flow meter 4. The outlet of the first mass flow meter 4 is divided into two pipelines. One pipeline is equipped with a third mass flow meter 8 and a first pressure sensor 7 in sequence. The other pipeline is equipped with a second electric valve 9, a third pressure sensor 14, and a second mass flow meter 11 in sequence. The compressed air assembly can provide an air flow rate of 6000 kg / h and 0.8 MPa.

[0024] The high-altitude environmental chamber 5 is equipped with a second pressure sensor 10, a temperature sensor 12, a safety valve 13, a first quick-connect connector 6, a second quick-connect connector 15, a fourth mass flow meter 31, a fifth mass flow meter 24, a first air filter 16, and a second air filter 34.

[0025] The vacuum pump unit includes two independent vacuum pump units, namely, the first vacuum pump unit 30 and the second vacuum pump unit 32, with a nominal volumetric flow rate of 56 m³ / h for each unit. 3 / min, rated working pressure 25Torr.

[0026] The refrigeration unit is equipped with an evaporator assembly 18, a condenser assembly 22, a valve body assembly 23, a compressor 20, a first fan 19, and a second fan 21, wherein the evaporator assembly 18 and the first fan 19 are installed inside the high-altitude environment chamber 5.

[0027] The power supply unit is equipped with a 115V AC power supply 26, a 600V DC power supply 27, and a 60V DC power supply 28. The power supply unit supplies power to air-operated shut-off valves and various rotating machinery products. Its purpose is to energize the air-operated shut-off valves for opening and closing control, and to power various rotating machinery products to enable them to operate.

[0028] In this embodiment, the environmental control system adopts a dual-intake method. Therefore, the high-altitude performance testing equipment for the environmental control system is equipped with two intake pipelines. One pipeline consists of the first rotating mechanical product 25, the first air shut-off valve 17, and the associated pipelines. The other pipeline consists of the second rotating mechanical product 29, the second air shut-off valve 33, and the associated pipelines. The first air shut-off valve 17 is connected to the outlet of the first air filter 16. The fifth mass flow meter 24 is connected to the outlet side of the first air shut-off valve 17. The first rotating mechanical product 25 is connected to the outlet side of the first air shut-off valve 17. The second air shut-off valve 33 is connected to the outlet of the second air filter 34. The fourth mass flow meter 31 is connected to the outlet side of the second air shut-off valve 33. The second rotating mechanical product 29 is connected to the outlet side of the second air shut-off valve 33.

[0029] By adjusting the high-altitude environmental chamber 5 to the required temperature and pressure using the refrigeration unit and vacuum pump unit, and then activating the air shut-off valve and rotating mechanical products, the high-altitude performance test of the environmental control system under one working condition is completed.

[0030] Before conducting the high-altitude performance test of the environmental control system, the system components must be installed inside the high-altitude environmental chamber 5, and the associated PLC control system must be started. Check that the readings of each sensor are normal and that the electric valves can open and close normally. After the checks are completed, start the vacuum pump unit, and then set the temperature and pressure of the high-altitude environmental chamber 5 on the PLC control system. The vacuum pump unit and refrigeration unit will then begin operating, bringing the environmental control system inside the chamber to the specified environmental conditions, and the performance test will begin.

[0031] Vacuum pump units, refrigeration units, electric valves, air shut-off valves, rotating machinery products, and electrical instruments can all be connected to the PLC control console, and automated programs can be written to control the operation of various electrical equipment and read and store data, which has high reliability and accuracy.

[0032] Figure 1 The demonstration showed the state of the high-altitude performance testing equipment for environmental control systems after assembly with the components of the environmental control system under test. Figure 1 The system includes an air compressor 1, an air collection tank 2, a first electric valve 3, a first mass flow meter 4, an high-altitude environmental chamber 5, a first quick-connect coupling 6, a first pressure sensor 7, a third mass flow meter 8, a second electric valve 9, a second pressure sensor 10, a second mass flow meter 11, a temperature sensor 12, a safety valve 13, a third pressure sensor 14, a second quick-connect coupling 15, a first air filter 16, a first air shut-off valve 17, an evaporator assembly 18, a first fan 19, a compressor 20, a second fan 21, a condenser assembly 22, a valve body assembly 23, a first rotating machinery product 25, a 115V AC power supply 26, a 600V DC power supply 27, a 60V DC power supply 28, a second rotating machinery product 29, a first vacuum pump unit 30, a fourth mass flow meter 31, a second vacuum pump unit 32, a second air shut-off valve 33, and a second air filter 34, as well as components such as an electrical control console not shown in the figure. The high-altitude performance testing equipment for environmental control systems can easily control components such as air compressor 1, vacuum pump unit, electric valve, refrigeration unit, and power supply. For example, it can control the temperature and pressure of the environmental chamber, adjust the opening degree of the electric valve, switch the power supply on and off, and start and stop the vacuum pump.

[0033] The method of using the high-altitude performance testing equipment for the environmental control system in this embodiment is as follows:

[0034] Step 1: Connect the environmental control system components (including the first rotating machinery product 25, the first air shut-off valve 17, the second rotating machinery product 29, and the second air shut-off valve 33), the compressed air assembly, and the high-altitude environmental chamber 5 using quick-connect couplings (the first quick-connect coupling 6 and the second quick-connect coupling 15).

[0035] Step 2: Turn on the PLC control console power, open the parameter setting interface, and check the various electrical instruments;

[0036] Step 3: Set the flow parameters of the environmental control system, open the air shut-off valves (first air shut-off valve 17 and second air shut-off valve 33), and test whether the valve functions and performance are normal.

[0037] Step 4: Open the first electric valve 3 and the second electric valve 9 of the compressed air assembly, and adjust the opening to make the two intake air volumes of the environmental control system reach the required values ​​(by reading the values ​​of the third mass flow meter 8, the first pressure sensor 7, the third pressure sensor 14, and the second mass flow meter 11). Then record the flow rate (by reading the values ​​of the fourth mass flow meter 31 and the fifth mass flow meter 24) and pressure value of the environmental control system pipeline.

[0038] Step 5: Disconnect the first quick-connect connector 6 and the second quick-connect connector 15 from the environmental control system components and the high-altitude environmental chamber 5. The quick-connect connectors use a clamp connection method, which can easily and quickly achieve on / off switching.

[0039] Step 6: Turn on the power to the rotating machinery products (first rotating machinery product 25 and second rotating machinery product 29). The rotating machinery products will start working. Test whether the functions and performance of the rotating machinery products are normal under ground conditions, and record the flow rate value of the environmental control system pipeline. After the test is completed, turn off the power.

[0040] Step 7: Adjust the first vacuum pump unit 30, the second vacuum pump unit 32, and the refrigeration unit to bring the pressure and temperature of the high-altitude environment chamber 5 to the required values. After the environmental parameters stabilize, start the high-altitude performance test.

[0041] Step 8: Turn the power supply on and off to the air shut-off valves (first air shut-off valve 17 and second air shut-off valve 33) and test whether the air shut-off valves function and perform normally under high-altitude conditions.

[0042] Step 9: Turn on the power to the rotating machinery products (first rotating machinery product 25 and second rotating machinery product 29), test whether the functions and performance of the rotating machinery products are normal under high-altitude conditions, and record the flow rate value of the environmental control system pipeline. After the test is completed, turn off the power.

[0043] Step 10: Print the test data and turn off the power to the test equipment.

[0044] The testing equipment in this embodiment provides precise control over test temperature, pressure, and flow rate, and features real-time data acquisition and printing capabilities. This equipment offers advantages such as stable test parameters, high measurement accuracy, simple operation, and strong safety.

[0045] The above embodiments are not intended to limit the scope of protection of this utility model. Any modifications, alterations or equivalent substitutions made based on the technical solutions of this utility model shall fall within the scope of protection of this utility model.

Claims

1. A high-altitude performance test device for a cabin control system, characterized in that, The utility model relates to a kind of high-altitude performance test equipment of ring control system, including: Compressed air assembly, the compressed air assembly includes air compressor (1) in turn connected with air output direction, gas collecting tank (2), first electric valve (3) and first mass flowmeter (4), first mass flowmeter (4) export side is connected with the import end of inlet pipeline, and mass flowmeter and pressure sensor are arranged on inlet pipeline; High-altitude environment cabin (5), the second pressure sensor (10) is assembled on the high-altitude environment cabin (5), temperature sensor (12), safety valve (13) and quick connector, quick connector is connected with the outlet end of inlet pipeline corresponding to the import end outside high-altitude environment cabin (5), and quick connector is connected with filter corresponding to the outlet end inside high-altitude environment cabin (5); Vacuum pump unit, the vacuum pump unit is connected with high-altitude environment cabin (5); Refrigeration unit, the refrigeration unit includes evaporator assembly (18), condenser assembly (22), valve body assembly (23), compressor (20), first fan (19) and second fan (21), wherein evaporator assembly (18) and first fan (19) are arranged inside high-altitude environment cabin (5); Power supply assembly, the power supply assembly is connected with high-altitude environment cabin (5), and power supply assembly includes alternating current power supply and direct current power supply.

2. The high-altitude performance test equipment of ring control system according to claim 1, wherein: The inlet pipeline includes first pipeline and second pipeline, and the import end of the first pipeline and the second pipeline is connected with the outlet side of the first mass flowmeter (4) respectively, wherein the first pipeline is sequentially provided with the third mass flowmeter (8) and the first pressure sensor (7), and the second pipeline is sequentially provided with the second electric valve (9), the third pressure sensor (14) and the second mass flowmeter (11); The quick connector includes first quick connector (6) and second quick connector (15), wherein the import end of the first quick connector (6) is connected with the outlet end of the first pipeline, the import end of the second quick connector (15) is connected with the outlet end of the second pipeline, the second air filter (34) and the fourth mass flowmeter (31) are sequentially connected at the outlet end of the first quick connector (6) inside the high-altitude environment cabin (5), and the first air filter (16) and the fifth mass flowmeter (24) are sequentially connected at the outlet end of the second quick connector (15) inside the high-altitude environment cabin (5).

3. The ring control system high altitude performance test device of claim 1, wherein: The vacuum pump unit includes first vacuum pump unit (30) and second vacuum pump unit (32) which are independent of each other.

4. The ring control system high altitude performance test device of claim 1, wherein: The power supply assembly includes 115V alternating current power supply (26), 600V direct current power supply (27) and 60V direct current power supply (28).

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