Inflation unfolding test platform for protective lifesaving air bag

Abstract

The invention discloses an inflatable expansion test platform for a protective lifesaving air bag, which is used for measuring the inflation pressure, flow and surface stress of the air bag, shooting the form change of the air bag and the like. The test bench is mainly composed of an inflation system, a control system, a data acquisition system, a test system and a safety device. Wherein the inflation system is an independent air source device, and the control system and the inflatable expansion test platform of the protective lifesaving airbag can realize the inflation and deflation processes of the airbag under different inlet pressures and flows, and can measure and store related test data in the inflation and deflation processes of the airbag in real time; the parameters include air bag air inlet pressure, air bag air inlet flow, air bag air inlet temperature, air bag internal pressure, air bag internal temperature, air bag inflation time, appearance change and the like. Through test measurement and result analysis, the mechanical characteristics of airbags of different configurations and different materials in the inflation and unfolding process can be deeply researched, and meanwhile, test support is provided for establishing a real and effective airbag inflation mathematical model.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft safety and life-saving, and in particular relates to an inflation and deployment test platform for a protective life-saving airbag. Background Art

[0002] The protective life-saving airbag system is a commonly used life-saving device for personnel. Under the protection of the protective life-saving airbag, the damage to the aircraft during forced landing or airdropping of important airborne equipment during landing or water landing can be reduced. It can also ensure the floating performance of the aircraft after forced landing or after the important airborne equipment is airdropped, which is convenient for personnel to escape and the recovery of the aircraft equipment. Therefore, the research on the inflation and deployment process of the protective life-saving airbag is of great significance to improving the forced landing performance of modern aircraft, improving the survival rate of personnel, and protecting important airborne equipment.

[0003] The inflation and deployment test platform for protective life-saving airbags mainly tests and verifies the performance and reliability of protective life-saving airbags and their inflation systems by measuring the inflation performance of the airbags (inflation time, inflation pressure, inflation effect, durability, shape change, etc.). The protective life-saving airbags are inflated and deployed to test whether the airbags can complete the inflation test within the time specified by the procedure, and to verify the effectiveness of the airbag folding and bundling methods; the airbags are deflated to ensure that the payload can be smoothly deployed after the airbags are deflated and contracted. Experimental research on the inflation and deployment process of protective life-saving airbags will help ensure that the protective life-saving airbags can reliably provide the required buoyancy and protection effect in actual emergency situations, and can also provide experimental support for establishing a real and effective mathematical model for airbag inflation and deployment. Summary of the invention

[0004] In view of the above technical problems, the purpose of the present invention is to provide a test platform for inflating and deploying protective life-saving airbags, which can measure the inflation performance of the airbags during the inflation process of the protective life-saving airbags, thereby shortening the research and development cycle of the protective life-saving airbags and providing experimental support for establishing a real and effective mathematical model of protective life-saving airbag inflation.

[0005] To achieve the above object, the present invention provides the following solutions: A test platform for inflation and deployment of a protective life-saving airbag, the test platform comprising an inflation system, a control system, a data acquisition system, a test system and a safety device; wherein the test system comprises a set of test airbags 9, the inflation system is connected to the test airbags 9, the inflation system provides an air source for the test airbags 9, the test airbags 9 are provided with a data acquisition system, the data acquisition system is used to collect various numerical signals of pressure and temperature of the test airbags 9; the control system comprises a flow meter 5, a control panel and a computer 18, the various numerical signals of pressure and temperature are transmitted to the control system.

[0006] Furthermore, the integrated gas source device 1 is composed of a motor, a gas storage tank, a control panel, a pressure gauge, an exhaust valve, a cold dryer, an oil-water separator, a cooling fan, and a pressure protection device.

[0007] Furthermore, the inflation system includes an integrated air source device 1, a pipeline filter 2, and a pressure relief valve 3; the outlet of the integrated air source device 1 is connected to the pipeline filter 2 and the pressure relief valve 3 through a test pipeline, wherein the pressure relief valve 3 is controlled by the pressure relief device 20.

[0008] Furthermore, the inflation system comprises a first test pipeline 4 and a second test pipeline 7, wherein the first test pipeline 4 is connected to a pressure relief valve 3 at its left end and to a flow meter 5 and a pressure regulating valve 6 at its right end; The left end of the second test pipeline 7 is connected to the pressure regulating valve 6, and the right end is connected to the protective life-saving airbag air inlet interface 12.

[0009] Furthermore, a first temperature sensor 12b, a first pressure sensor c and a total pressure probe 12a are provided on the air inlet interface 12 above the test protection life-saving airbag to measure the total pressure, static pressure and temperature of the compressed gas at the air inlet interface of the test airbag.

[0010] Furthermore, the data acquisition system includes a pressure sensor, a temperature sensor, a strain gauge sensor 10, a data acquisition device 16, data acquisition software and data analysis software; wherein, The upper interface of the test airbag is provided with a second temperature sensor 11 and a second pressure sensor 13 to measure the internal pressure and temperature of the airbag; The test airbag surface monitoring point is provided with a strain gauge sensor 10 to measure the strain of the monitoring point during the inflation and deployment of the protective life-saving airbag.

[0011] Furthermore, the flow meter 5, the temperature sensor, the pressure sensor, the strain gauge sensor 10 and the total pressure probe 12a are respectively connected to the data collector 16 for signals, and the data collector 16 transmits the signals to the computer 18 for monitoring and recording the data.

[0012] Furthermore, the test airbag 9 is mounted on a test frame 8, and the test frame 8 is provided with a test observation window, and a high-speed camera 19 is arranged outside facing the test observation window to observe and record the appearance changes of the protective life-saving test airbag 9 during the inflation and deployment process.

[0013] Furthermore, the test platform is also provided with safety devices, which include a pressure protection device, a pressure relief device 20, and an emergency stop button.

[0014] The advantages of the present invention are as follows: The present invention provides an inflation and deployment test platform for a protective life-saving airbag, which can realize the inflation and deflation process of the protective life-saving airbag under different inlet pressures and flow rates, and can measure and store relevant test data during the inflation and deflation process of the protective life-saving airbag in real time, so as to deeply study the mechanical properties of the airbag inflation and deployment process, and also provide experimental support for establishing a real and effective airbag inflation mathematical model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the installation position of the protective life-saving airbag and sensor; Names marked in the figure: 1. air source device, 2. pipeline filter, 3. pressure relief valve, 4. first test pipeline, 7. second test pipeline, 5. flow meter, 6. pressure regulating valve, 8. test stand, 9. protective life-saving airbag, 10. strain gauge sensor, 11. temperature sensor, 12b. second temperature sensor, 12. air inlet interface, 12a. total pressure probe, 12c. first pressure sensor, 13. second pressure sensor, 14. first data transmission line, 15. second data transmission line, 17. third data transmission line, 16. data collector, 18. computer, 19. high-speed camera, 20. pressure relief device, 21. exhaust port of protective life-saving airbag. DETAILED DESCRIPTION

[0016] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] like Figure 1 As shown, the present invention is an inflation and deployment test platform for protective life-saving airbags, which can carry out the inflation and deflation process of the airbags under different inlet pressures and flow rates, and can measure and store relevant test data during the inflation and deflation process of the airbags in real time. It includes an inflation system, a control system, a data acquisition system, a test system, and a safety device.

[0018] The inflation system mainly includes an integrated air source device 1, a first test pipeline 4, a second test pipeline 7, a pipeline filter 2, and a pressure relief valve 3.

[0019] Control system: The control system controls the inflation process through a computer or panel, and monitors the inflation pressure, inflation flow, etc. The control system mainly includes a flow meter 5, a control panel and a computer 18. Data acquisition system: The data acquisition system monitors and records the airbag inflation pressure, inflation time, temperature, etc. The data acquisition system mainly includes a first pressure sensor 12c and a second pressure sensor 13, a first temperature sensor 11 and a second temperature sensor 12b, a strain gauge sensor 10, a data collector 16, data acquisition software, data analysis software and a high-speed camera 19; the test system includes a set of protective life-saving airbags 9, which are used to simulate the inflation process of the airbags in actual emergency situations. Safety devices: The safety devices include a pressure protection device, a pressure relief device 20, an emergency stop button, etc. to ensure the safety of operators and equipment.

[0020] As a preferred embodiment, the integrated gas source device is composed of a motor, a gas storage tank, a control panel, a pressure gauge, an exhaust valve, a cold dryer, an oil-water separator, a cooling fan, etc. The outlet of the integrated gas source device is connected to a pipeline filter 2 and a pressure relief valve 3, wherein the pressure relief valve 3 is controlled by a pressure relief device 20. The left end of the test pipeline 4 is connected to the pressure relief valve 3, and the right end is connected to the flow meter 5 and the pressure regulating valve 6. The left end of the test pipeline 7 is connected to the pressure regulating valve 6, and the right end is connected to the protective life-saving airbag inlet interface 12. The upper air inlet interface 12 of the test airbag is provided with a first temperature sensor 12b, a first pressure sensor 12c and a total pressure probe 12a to measure the total pressure, static pressure and temperature of the compressed gas at the test airbag inlet interface. The upper interface of the test airbag is provided with a second temperature sensor 11 and a second pressure sensor 13 to measure the internal pressure and temperature of the airbag. A strain gauge sensor 10 is provided at the monitoring point on the surface of the test airbag to measure the strain at the monitoring point during the inflation and deployment of the protective life-saving airbag.

[0021] The flow meter 5, the first temperature sensor 11 and the second temperature sensor 12b, the first pressure sensor 12c and the second pressure sensor 13, the strain gauge sensor 10 and the total pressure probe 12a are respectively connected to the data acquisition device 16 for signal transmission, and the data acquisition device 16 transmits the signal to the computer 18 for monitoring and recording the data.

[0022] The test stand 8 is provided with a test observation window, and a high-speed camera 19 is provided externally facing the test observation window to observe and record the shape changes of the protective life-saving airbag 9 during the inflation and deployment process.

[0023] The present invention is not limited to the above-mentioned preferred implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to the present invention is within the scope of protection.

Claims

1. An inflation and deployment test platform for protective life-saving airbags, characterized in that: The test platform comprises an inflation system, a control system, a data acquisition system, a test system and a safety device; wherein the test system comprises a set of test airbags (9), the inflation system is connected to the test airbags (9), the inflation system provides an air source for the test airbags (9), the test airbags (9) are provided with a data acquisition system, the data acquisition system is used to collect various numerical signals of pressure and temperature of the test airbags (9); the control system comprises a flow meter (5), a control panel and a computer (18), and the various numerical signals of pressure and temperature are transmitted to the control system.

2. The inflation and deployment test platform for protective life-saving airbags according to claim 1, characterized in that: The integrated gas source device (1) is composed of a motor, a gas storage tank, a control panel, a pressure gauge, an exhaust valve, a cold dryer, an oil-water separator, a cooling fan, and a pressure protection device.

3. The inflation and deployment test platform for protective life-saving airbags according to claim 1, characterized in that: The inflation system comprises an integrated air source device (1), a pipeline filter (2), and a pressure relief valve (3); the outlet of the integrated air source device (1) is connected to the pipeline filter (2) and the pressure relief valve (3) via a test pipeline, wherein the pressure relief valve (3) is controlled by the pressure relief device (20).

4. The inflation and deployment test platform for protective life-saving airbags according to claim 3, characterized in that: The inflation system comprises a first test pipeline (4) and a second test pipeline (7), wherein the left end of the first test pipeline (4) is connected to a pressure relief valve (3), and the right end is connected to a flow meter (5) and a pressure regulating valve (6); The left end of the second test pipeline (7) is connected to the pressure regulating valve (6), and the right end is connected to the protective life-saving airbag air inlet interface (12).

5. The inflation and deployment test platform for protective life-saving airbags according to claim 1, characterized in that: The air inlet interface (12) above the test protection life-saving airbag is provided with a first temperature sensor (12b), a first pressure sensor (c) and a total pressure probe (12a) to measure the total pressure, static pressure and temperature of the compressed gas at the air inlet interface of the test airbag.

6. The inflation and deployment test platform for the protective life-saving airbag according to claim 1, characterized in that: The data acquisition system comprises a pressure sensor, a temperature sensor, a strain gauge sensor (10), a data acquisition device (16), data acquisition software and data analysis software; wherein: A second temperature sensor (11) and a second pressure sensor (13) are respectively arranged at the upper interface of the test airbag to measure the internal pressure and temperature of the airbag; A strain gauge sensor (10) is provided at a monitoring point on the surface of the test airbag to measure the strain at the monitoring point during the inflation and deployment of the protective life-saving airbag.

7. The inflation and deployment test platform for the protective life-saving airbag according to claim 1, characterized in that: The flow meter (5), temperature sensor, pressure sensor, strain gauge sensor (10) and total pressure probe (12a) are respectively connected to a data acquisition device (16) by signal, and the data acquisition device (16) transmits the signal to a computer (18) for monitoring and recording data.

8. The inflation and deployment test platform for protective life-saving airbags according to claim 1, characterized in that: The test airbag (9) is mounted on a test frame (8), the test frame (8) is provided with a test observation window, and a high-speed camera (19) is arranged outside facing the test observation window to observe and record the changes in the appearance of the protective life-saving test airbag (9) during the inflation and deployment process.

9. The inflation and deployment test platform for protective life-saving airbags according to claim 1, characterized in that: The test platform is also provided with a safety device, which includes a pressure protection device, a pressure relief device (20), and an emergency stop button.

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