Multi-functional armored box for aircraft functional accessory gas-liquid test and method of using the same

Abstract

The present application belongs to the technical field of aircraft functional accessory gas-liquid strength test, and relates to a multifunctional armored box for aircraft functional accessory gas-liquid test and a use method thereof. The armored box adopts a mode of reading a pressure gauge in the box and controlling a switch outside the box, and can cut off and keep pressure of the pressure gauge, so that the problem of delayed display and inaccurate display of test pressure caused by a long pipeline path can be eliminated, and the value displayed by the pressure gauge can be ensured to be a real value of the gas-liquid strength test. Through the armored box, the gas-liquid strength test process of each aviation functional accessory can be effectively completed in cooperation with a test pressure supply pipeline, and the armored box is safe and reliable, simple to assemble, and quick and convenient to build a pipeline.

Description

Technical Field

[0001] This invention belongs to the technical field of gas-liquid strength testing for aircraft functional accessories, and relates to a multi-functional armored box for gas-liquid testing of aircraft functional accessories and its usage method. Background Technology

[0002] The gas-liquid strength test of functional accessories is a crucial process for ensuring the stability of aircraft pneumatic and hydraulic systems. Accurate parameter readings, error prevention, and safety measures during the test are decisive for its successful implementation. Therefore, the determination of the armored box type must first adhere to the pressure and accuracy ranges applicable to various aircraft functional accessories. Secondly, the armored box must possess certain functionalities, with a reasonable layout of components such as products, pressure gauges, and switches, ensuring that the readings are as close as possible to the actual internal pressure of the product while prioritizing safety. This necessitates a strict matching between the structural design and manufacturing of the armored box, and the rational distribution of components plays a decisive role in the testing process. Therefore, a multi-functional armored box, a dedicated process equipment for the gas-liquid strength testing of aircraft functional accessories, is needed. Summary of the Invention

[0003] This invention, through analysis of the gas-liquid strength testing methods for aircraft functional accessories, proposes a multi-functional armored box for such testing. Utilizing newly designed equipment, it ensures that after the functional accessories are connected and installed, the test pressure is provided by a pressure source. By inputting the specified pressure, the gas and liquid strength of the functional accessory product is checked. This ensures that the strength test can be conducted with greater accuracy in controlling and reading pressure values ​​while prioritizing safety, thus guaranteeing product quality, testing quality, and the safety of manual inspection. It eliminates pressure transmission errors between the armored box, the product, and the testing equipment, avoids complex operating procedures, and improves testing efficiency. It also largely solves the problems of numerical reading errors in aircraft functional accessory tests and the difficulties in pressure control during the testing process.

[0004] The technical solution of the present invention is as follows:

[0005] A multi-functional armored box for testing the gas and liquid properties of aircraft functional accessories, comprising: 1. Box body; 2. Box door frame; 3. Bulletproof glass; 4. Door lock screw; 5. Locking sleeve; 6. Locking washer; 7. Low-pressure hydraulic switch; 8. Medium-pressure hydraulic switch; 9. High-pressure hydraulic switch; 10. Low-pressure pneumatic switch; 11. Medium-pressure pneumatic switch; 12. High-pressure pneumatic switch; 13. Low-pressure hydraulic combination conduit; 14. Medium-pressure hydraulic combination conduit; 15. High-pressure hydraulic combination conduit; 16. Low-pressure pneumatic combination conduit; 17. High-pressure gas... 18. Combination conduit; 19. Wall panel connector; 20. 0-1MPa air pressure gauge; 21. 0-10MPa air pressure gauge; 22. 0-40MPa air pressure gauge; 23. 0-1MPa hydraulic pressure gauge; 24. 0-10MPa hydraulic pressure gauge; 25. 0-60MPa hydraulic pressure gauge; 26. Temperature sensor; 27. Lighting lamp; 28. Lighting lamp switch; 29. ​​Switch tray; 30. Stopwatch controller; 31. Strength test tray groove; 32. Hydraulic hose; and 33. Air pressure hose.

[0006] The enclosure 1 has two door frames 2, each with a window and a handle. Bulletproof glass 3 is installed in the window. A locking sleeve 5 is provided along the upper edge of the door frame 2, and a locking washer 6 is provided on the locking sleeve 5. The door lock screw 4 is inserted into the locking sleeve 5. A bayonet is provided at a corresponding position along the upper edge of the enclosure 1. The end of the door lock screw 4 is screwed into the bayonet to achieve locking. A lighting lamp 27 is provided on the inner wall of the enclosure 1. A strength test tray slot 31 is provided inside the enclosure 1 for placing the aircraft functional accessories to be tested.

[0007] The housing 1 has three through holes symmetrically arranged on its left and right side walls. The outer side of the left wall has a switch plate 29 for controlling hydraulic pressure, on which a low-pressure hydraulic switch 7, a medium-pressure hydraulic switch 8, and a high-pressure hydraulic switch 9 are mounted. One end of the low-pressure hydraulic combination conduit 13, the medium-pressure hydraulic combination conduit 14, and the high-pressure hydraulic combination conduit 15 is connected to the corresponding interfaces of the low-pressure hydraulic switch 7, the medium-pressure hydraulic switch 8, and the high-pressure hydraulic switch 9 on the switch plate 29, respectively. These conduits then pass through the corresponding through holes on the housing 1 and are fixed and sealed by the wall panel joint 19. The other end of the conduit enters the housing 1 and connects to a four-way valve inside the housing 1. The four-way valve is also connected to one end of a hydraulic hose 32, and the other end of the hydraulic hose 32 is connected to the corresponding hydraulic interface of the aircraft functional accessory to be tested. The low-pressure hydraulic combination conduit 13, the medium-pressure hydraulic combination conduit 14, and the high-pressure hydraulic combination conduit within the housing 1... Hydraulic pressure gauges 23 (0-1MPa), 24 (0-10MPa), and 25 (0-60MPa) are respectively provided on the 15. A switch plate 29 for controlling air pressure is provided on the outer side of the right wall, which is equipped with a low-pressure air pressure switch 10, a medium-pressure air pressure switch 11, and a high-pressure air pressure switch 12. One end of the low-pressure air pressure combination conduit 16, the medium-pressure air pressure combination conduit 17, and the high-pressure air pressure combination conduit 18 is connected to the corresponding interfaces of the low-pressure air pressure switch 10, the medium-pressure air pressure switch 11, and the high-pressure air pressure switch 12 on the switch plate 29, respectively. Then, they pass through the corresponding through holes on the housing 1 and are fixed and sealed by the wall panel joint 19. The other end passes into the housing 1 and is connected to another four-way valve inside the housing 1. The four-way valve is also connected to one end of the air pressure hose 33, and the other end of the air pressure hose 33 is connected to the corresponding air pressure interface of the aircraft functional accessory to be tested.

[0008] The low-pressure hydraulic combined conduit 13, medium-pressure hydraulic combined conduit 14, high-pressure hydraulic combined conduit 15, low-pressure pneumatic combined conduit 16, medium-pressure pneumatic combined conduit 17 and high-pressure pneumatic combined conduit 18 are also equipped with temperature sensors 26 on the portions of them located inside the housing 1.

[0009] The switch tray 29 is also equipped with a stopwatch controller 30.

[0010] The switch tray 29 is also provided with a lighting switch 28, which is electrically connected to the lighting lamp 27.

[0011] The beneficial effects of this invention are as follows: This armored box process equipment uses an internal pressure gauge reading and an external switch control method to maintain pressure between the pressure gauge and the product, eliminating the problems of delayed and inaccurate display of test pressure caused by long pipeline paths, ensuring that the pressure gauge readings are the true values ​​of the gas-liquid strength test. Simultaneously, color coding is used to distinguish the positions of gas and hydraulic components, improving the test's error-proofing capability. This process equipment can effectively coordinate with the test pressure supply pipeline to complete the gas-liquid strength test process for various aviation functional accessories, ensuring safety, reliability, and simple assembly, with quick and convenient pipeline setup. Attached Figure Description

[0012] Figure 1(a) is a front view of the multifunctional armored box of the present invention.

[0013] Figure 1(b) is a side view of the multi-functional armored box of the present invention.

[0014] In the diagram: 1. Box body; 2. Box door frame; 3. Bulletproof glass; 4. Door lock screw; 5. Locking sleeve; 6. Locking gasket; 7. Low-pressure hydraulic switch; 8. Medium-pressure hydraulic switch; 9. High-pressure hydraulic switch; 10. Low-pressure pneumatic switch; 11. Medium-pressure pneumatic switch; 12. High-pressure pneumatic switch; 13. Low-pressure hydraulic combination conduit; 14. Medium-pressure hydraulic combination conduit; 15. High-pressure hydraulic combination conduit; 16. Low-pressure pneumatic combination conduit; 17. Medium-pressure pneumatic combination conduit; 18. High-pressure pneumatic combination conduit; 19. Wall panel connector; 20. 0-1MPa pneumatic pressure gauge; 21. 0-10MPa pneumatic pressure gauge; 22. 0-40MPa pneumatic pressure gauge; 23. 0-1MPa hydraulic pressure gauge; 24. 0-10MPa hydraulic pressure gauge; 25. 0-60MPa hydraulic pressure gauge, 26 temperature sensor, 27 lighting lamp, 28 lighting lamp switch, 29 switch tray, 30 stopwatch controller, 31 strength test tray groove, 32 hydraulic hose, 33 pneumatic hose. Detailed Implementation

[0015] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and technical solutions.

[0016] As shown in Figures 1(a) and 1(b), the multi-functional armored box for testing the gas-liquid system of aircraft functional accessories includes: a box body 1, a box door frame 2, bulletproof glass 3, a door lock screw 4, a locking sleeve 5, a locking washer 6, a low-pressure hydraulic switch 7, a medium-pressure hydraulic switch 8, a high-pressure hydraulic switch 9, a low-pressure pneumatic switch 10, a medium-pressure pneumatic switch 11, a high-pressure pneumatic switch 12, a low-pressure hydraulic combination conduit 13, a medium-pressure hydraulic combination conduit 14, a high-pressure hydraulic combination conduit 15, a low-pressure pneumatic combination conduit 16, and a medium-pressure pneumatic combination conduit 17. 17. Pipe, 18. High-pressure air combination conduit, 19. Wall panel connector, 20. 0-1MPa air pressure gauge, 21. 0-10MPa air pressure gauge, 22. 0-40MPa air pressure gauge, 23. 0-1MPa hydraulic pressure gauge, 24. 0-10MPa hydraulic pressure gauge, 25. 0-60MPa hydraulic pressure gauge, 26. Temperature sensor, 27. Lighting lamp, 28. Lighting lamp switch, 29. Switch tray, 30. Stopwatch controller, 31. Strength test tray groove, 32. Hydraulic hose, and 33. Air pressure hose.

[0017] The usage method of the multi-functional armored box for gas-liquid testing of aircraft functional accessories is as follows:

[0018] I. Hydraulic strength test:

[0019] Observe that all pressure gauges inside chamber 1 read 0, and all external switches are in the "on" position. Open the chamber door frame 2 on chamber 1, turn on the lighting switch 28, and illuminate the lighting 27. Place the aircraft hydraulic strength test accessory into the strength test tray slot 31. Connect and tighten the connecting nozzle on the product to the hydraulic hose 32. Connect the hydraulic combination conduit according to the highest pressure of the product test (low pressure: low pressure hydraulic combination conduit 13 corresponding to 0-1MPa; medium pressure: medium pressure hydraulic combination conduit 14 corresponding to 0-10MPa; high pressure: high pressure hydraulic combination conduit 15 corresponding to 0-60MPa). After connection, turn on the switch corresponding to the test (low pressure hydraulic). Use the low-pressure hydraulic switch 7, medium-pressure hydraulic switch 8, or high-pressure hydraulic switch 9 to close the door frame 2. Tighten the door lock screw 4, locking sleeve 5, and locking washer 6 to lock the door frame 2. Increase the pressure in the hydraulic pipeline through the test bench or hydraulic source. Observe the readings of the pressure gauges (0-1MPa hydraulic pressure gauge 23, 0-10MPa hydraulic pressure gauge 24, or 0-60MPa hydraulic pressure gauge 25) on the corresponding pipeline. After the pressure is reached, quickly close the corresponding switch in the pipeline (low-pressure hydraulic switch 7, medium-pressure hydraulic switch 8, or high-pressure hydraulic switch 9). Conduct a strength test according to the product test procedure. At the same time, observe the display of the temperature sensor 26 and compare the temperature change of the medium inside the product.

[0020] II. Air pressure strength test:

[0021] Observe that all pressure gauges inside chamber 1 read 0, and all external switches are in the "on" position. Open the chamber door frame 2 on chamber 1, turn on the lighting switch 28, and illuminate the lighting 27. Place the aircraft barometric pressure test accessory into the strength test tray 31. Connect and secure the connecting nozzle on the accessory to the air pressure hose 33. Connect the corresponding pressure combination conduit according to the highest pressure of the product test (low pressure: low pressure combination conduit 16 corresponding to 0-1MPa; medium pressure: medium pressure combination conduit 17 corresponding to 0-10MPa; high pressure: high pressure combination conduit 18 corresponding to 0-60MPa). After connection, turn on the corresponding test switch (low pressure switch). 10 or medium-pressure air switch 11 or high-pressure air switch 12), close the box door frame 2, press the door lock screw 4, locking sleeve 5, and locking gasket 6 to lock the box door frame 2. Increase the pressure in the air pipeline through the test bench or air pressure source, and observe the reading of the pressure gauges (0-1MPa air pressure gauge 20, 0-10MPa air pressure gauge 21, or 0-40MPa air pressure gauge 22) on the corresponding pipeline. After the pressure is reached, slowly close the corresponding switch in the pipeline (low-pressure air switch 10, medium-pressure air switch 11, or high-pressure air switch 12). Conduct the strength test according to the product test procedure, and at the same time observe the display of the temperature sensor 26 to compare and detect the temperature change of the medium inside the product.

Claims

1. A multi-functional armored box for testing gas-liquid components of aircraft functional accessories, characterized in that, The multi-functional armored box includes: a box body (1), a box door frame (2), bulletproof glass (3), a door lock screw (4), a locking sleeve (5), a locking washer (6), a low-pressure hydraulic switch (7), a medium-pressure hydraulic switch (8), a high-pressure hydraulic switch (9), a low-pressure pneumatic switch (10), a medium-pressure pneumatic switch (11), a high-pressure pneumatic switch (12), a low-pressure hydraulic combination conduit (13), a medium-pressure hydraulic combination conduit (14), a high-pressure hydraulic combination conduit (15), a low-pressure pneumatic combination conduit (16), a medium-pressure pneumatic combination conduit (17), and a high-pressure pneumatic combination conduit. Pipe (18), wall panel joint (19), 0-1MPa air pressure gauge (20), 0-10MPa air pressure gauge (21), 0-40MPa air pressure gauge (22), 0-1MPa hydraulic pressure gauge (23), 0-10MPa hydraulic pressure gauge (24), 0-60MPa hydraulic pressure gauge (25), temperature sensor (26), lighting lamp (27), lighting switch (28), switch tray (29), stopwatch controller (30), strength test tray groove (31), hydraulic hose (32) and air pressure hose (33); The box (1) is provided with two box door frames (2), and the box door frames (2) are provided with windows and handles. Bulletproof glass (3) is installed on the windows. The upper edge of the box door frame (2) is provided with a locking sleeve (5), and the locking sleeve (5) is provided with a locking washer (6). The door lock screw (4) is inserted into the locking sleeve (5). The upper edge of the box (1) is provided with a bayonet at the corresponding position. The end of the door lock screw (4) is screwed into the bayonet to achieve locking. The inner wall of the box (1) is provided with a lighting lamp (27), and the box (1) is provided with a strength test tray groove (31) for placing the aircraft functional accessories to be tested. The box (1) has three through holes symmetrically arranged on its left and right side walls. The left side wall has a switch plate (29) for controlling hydraulic pressure, on which a low-pressure hydraulic switch (7), a medium-pressure hydraulic switch (8), and a high-pressure hydraulic switch (9) are arranged. The low-pressure hydraulic combination conduit (13), the medium-pressure hydraulic combination conduit (14), and the high-pressure hydraulic combination conduit (15) are connected at one end to the corresponding interfaces of the low-pressure hydraulic switch (7), the medium-pressure hydraulic switch (8), and the high-pressure hydraulic switch (9) on the switch plate (29) for controlling hydraulic pressure, respectively. Then they pass through the corresponding through holes on the box (1) and are fixed and sealed by the wall panel joint (19). The other end is inserted into the box (1) and connected to the four-way valve inside the box (1). The four-way valve is also connected to one end of the hydraulic hose (32). The other end of the hydraulic hose (32) is connected to the corresponding hydraulic interface of the aircraft functional accessory to be tested. The low-pressure hydraulic combination conduit (13), the medium-pressure hydraulic combination conduit (14), and the high-pressure hydraulic combination conduit inside the box (1) are connected to the switch plate (29) for controlling hydraulic pressure, respectively. (15) is equipped with a 0-1MPa hydraulic pressure gauge (23), a 0-10MPa hydraulic pressure gauge (24), and a 0-60MPa hydraulic pressure gauge (25); a switch plate (29) for controlling air pressure is provided on the outer side of the right side wall, on which a low-pressure air pressure switch (10), a medium-pressure air pressure switch (11), and a high-pressure air pressure switch (12) are provided; one end of the low-pressure air pressure combination conduit (16), the medium-pressure air pressure combination conduit (17), and the high-pressure air pressure combination conduit (18) is respectively connected to a switch plate (29) for controlling air pressure. The low-pressure switch (10), medium-pressure switch (11) and high-pressure switch (12) on the switch tray (29) controlling the air pressure are connected to the corresponding interfaces, and then pass through the corresponding through holes on the housing (1) and are fixed and sealed by the wall panel joint (19). The other end is inserted into the housing (1) and connected to another four-way valve inside the housing (1). The four-way valve is also connected to one end of the air pressure hose (33), and the other end of the air pressure hose (33) is connected to the corresponding air pressure interface of the aircraft functional accessory to be tested. The low-pressure hydraulic combined conduit (13), medium-pressure hydraulic combined conduit (14), high-pressure hydraulic combined conduit (15), low-pressure pneumatic combined conduit (16), medium-pressure pneumatic combined conduit (17) and high-pressure pneumatic combined conduit (18) are also equipped with temperature sensors (26) on the part located inside the housing (1). The switch tray (29) is also equipped with a stopwatch controller (30); The switch tray (29) is also provided with a lighting switch (28), which is electrically connected to the lighting lamp (27).

2. The method of using the multi-functional armored box for gas-liquid testing of aircraft functional accessories as described in claim 1, characterized in that, Specifically as follows: I. Hydraulic strength test: Observe that all pressure gauges inside the chamber (1) read 0 and all external switches are in the open position. Open the chamber door frame (2) on the chamber (1), turn on the lighting switch (28), and turn on the lighting (27). Place the aircraft hydraulic strength test accessory product into the strength test tray slot (31). Connect the connector on the product to the hydraulic hose (32) and tighten it. Connect the hydraulic combination conduit according to the highest pressure of the product test, that is, the low-pressure hydraulic combination conduit (13) corresponding to 0-1MPa, the medium-pressure hydraulic combination conduit (14) corresponding to 0-10MPa, and the high-pressure hydraulic combination conduit (15) corresponding to 0-60MPa. After connection, turn on the corresponding test... Test the switch, namely the low-pressure hydraulic switch (7), medium-pressure hydraulic switch (8), or high-pressure hydraulic switch (9), close the box door frame (2), press the door lock screw (4), locking sleeve (5), and locking gasket (6) to lock the box door frame (2), increase the pressure in the hydraulic pipeline through the test bench or hydraulic source, observe the reading of the 0-1MPa hydraulic pressure gauge (23), 0-10MPa hydraulic pressure gauge (24), or 0-60MPa hydraulic pressure gauge (25) on the corresponding pipeline after the pressure is reached, quickly close the corresponding switch in the pipeline, carry out the strength test according to the product test procedure, and observe the temperature sensor (26) display at the same time to compare and detect the temperature change of the medium inside the product; II. Air pressure strength test: Observe that all pressure gauges inside the chamber (1) read 0 and all external switches are in the open position. Open the chamber door frame (2) on the chamber (1), turn on the lighting switch (28), and turn on the lighting (27). Place the aircraft air pressure strength test accessory product into the strength test tray slot (31). Connect the connector on the product to the air pressure hose (33) and tighten it. Connect the air pressure combination conduit according to the highest pressure of the product test, that is, the low pressure air pressure combination conduit (16) corresponding to 0-1MPa, the medium pressure air pressure combination conduit (17) corresponding to 0-10MPa, and the high pressure air pressure combination conduit (18) corresponding to 0-40MPa. After connection, turn on the corresponding test... Switch, namely low pressure switch (10), medium pressure switch (11), or high pressure switch (12), close the box door frame (2), press the door lock screw (4), locking sleeve (5), and locking gasket (6) to lock the box door frame (2), increase the pressure in the air pressure pipeline through the test bench or air pressure source, observe the reading of the 0-1MPa air pressure gauge (20), 0-10MPa air pressure gauge (21), or 0-40MPa air pressure gauge (22) on the corresponding pipeline after the pressure is reached, slowly close the corresponding switch in the pipeline, carry out the strength test according to the product test procedure, and observe the temperature sensor (26) display at the same time to compare and detect the temperature change of the medium inside the product.

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