A general detection device for air bags

Abstract

An air bag universal detection device relates to the field of detection device. The air bag universal detection device includes a test box with multiple casters on the bottom, the outer wall of the test box is respectively connected with an inflation interface, an air extraction interface and a drainage interface, the inner bottom of the test box is fixedly connected with at least two air compressors, an air storage tank and a double valve pressure controller, the exhaust port of each air compressor is connected with the air storage tank through a first connecting pipe provided with a first electromagnetic valve, the air storage tank is respectively connected with the inflation interface, the air extraction interface and the drainage interface through a second connecting pipe, a third connecting pipe and a fourth connecting pipe, the second connecting pipe is sequentially connected with a filter, a proportional flow valve and the double valve pressure controller away from the air storage tank, the third connecting pipe is sequentially connected with a second electromagnetic valve and a vacuum generator away from the air storage tank, and the fourth connecting pipe is provided with a third electromagnetic valve. The air bag universal detection device has the advantages of convenient movement, high detection efficiency and precision, adaptation to performance detection of multiple models of air bags and no need of external gas cylinders.

Description

Technical Field

[0001] This application relates to the field of testing devices, and more specifically, to a universal airbag testing device. Background Technology

[0002] During routine inspections, airbags used in aviation lifesaving applications require pressure testing to ensure airtightness and pressure resistance, followed by vacuum sealing to guarantee their proper airtightness. Currently, domestic testing equipment for airbags is limited and inefficient, relying solely on mechanical valves on pipelines for testing. This method is slow and inefficient, failing to meet operational requirements. Utility Model Content

[0003] The purpose of this application is to provide a universal airbag testing device, which has the advantages of being easy to move, having high testing efficiency and accuracy, being adaptable to the performance testing of multiple airbag models, and requiring no external air cylinder.

[0004] This application is implemented as follows: This application provides a universal airbag testing device, which includes a test box with multiple casters at the bottom. The outer wall of the test box is connected to an inflation port, an air extraction port, and a drainage port. At least two air compressors, an air tank, and a dual-valve pressure controller are fixedly connected to the bottom of the test box. The exhaust port of each air compressor is connected to the air tank through a first connecting pipe equipped with a first solenoid valve. The air tank is connected to the inflation port, the air extraction port, and the drainage port through a second connecting pipe, a third connecting pipe, and a fourth connecting pipe. As the second connecting pipe moves away from the air tank, a filter, a proportional flow valve, and a dual-valve pressure controller are connected in sequence. As the third connecting pipe moves away from the air tank, a second solenoid valve and a vacuum generator are connected in sequence. A third solenoid valve is provided on the fourth connecting pipe.

[0005] In some alternative implementations, a pressure sensor is connected to a third connecting pipe between the vacuum generator and the pumping port.

[0006] In some alternative implementations, the filter is connected to a flushing pipe, which is connected to a fourth connecting pipe between the third solenoid valve and the drain port.

[0007] In some alternative implementations, each air compressor has a support frame connected to its bottom at both ends. The support frame is connected to a support plate at its bottom by multiple connecting bolts. The bottom of each support plate is connected to the bottom wall of the test chamber by multiple connecting legs.

[0008] In some alternative implementations, a polyurethane cushioning strip is provided between the support frame and the support plate, and the connecting bolts pass through the polyurethane cushioning strip.

[0009] In some optional implementations, the test chamber is equipped with a cooling fan, and the outer wall of the test chamber has multiple heat dissipation holes located on one side of the cooling fan. The cooling fan is used to push air out of the test chamber through the heat dissipation holes.

[0010] In some alternative implementations, each air compressor's air inlet is connected to a silencer filter.

[0011] In some alternative implementations, a safety valve is connected to the exhaust port of each air compressor.

[0012] In some alternative implementations, the gas tank is connected to a pressure switch.

[0013] In some alternative implementations, the test chamber has an opening on one side that leads to its interior, and the test chamber is hinged to a maintenance door that can be rotated to open and close the opening.

[0014] The beneficial effects of this application are as follows: The universal airbag testing device provided by this application includes a test box with multiple casters at the bottom. The outer wall of the test box is connected to an inflation port, an air extraction port, and a drainage port. At least two air compressors, an air tank, and a dual-valve pressure controller are fixedly connected to the bottom of the test box. The exhaust port of each air compressor is connected to the air tank through a first connecting pipe equipped with a first solenoid valve. The air tank is connected to the inflation port, the air extraction port, and the drainage port through a second connecting pipe, a third connecting pipe, and a fourth connecting pipe. As the second connecting pipe moves away from the air tank, a filter, a proportional flow valve, and a dual-valve pressure controller are connected in sequence. As the third connecting pipe moves away from the air tank, a second solenoid valve and a vacuum generator are connected in sequence. A third solenoid valve is provided on the fourth connecting pipe. The universal airbag testing device provided in this application allows operators to easily move the test box and connect it to the airbag to be tested via the inflation or deflation interface. Air is compressed by an air compressor and then introduced into the air tank, which is then introduced into the airbag through the inflation interface for testing. Alternatively, a vacuum generator can be used to evacuate the airbag connected to the deflation interface for testing. At the same time, a drain interface can be used to remove oil or water droplets contained in the air stored in the air tank to avoid affecting the testing accuracy. It has the advantages of being easy to move, having high testing efficiency and accuracy, being adaptable to the performance testing of multiple airbag models, and requiring no external air cylinder. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the universal airbag detection device provided in the embodiments of this application; Figure 2 A partial structural diagram of the universal airbag testing device provided in this application embodiment, omitting part of the test box structure; Figure 3 A schematic diagram of the air path and circuit connection structure of the universal airbag detection device provided in the embodiments of this application.

[0017] In the diagram: 100, Test box; 110, Casters; 120, Inflation port; 130, Suction port; 140, Drain port; 150, Air compressor; 160, Air tank; 170, Dual-valve pressure controller; 180, First connecting pipe; 190, First solenoid valve; 200, Second connecting pipe; 210, Third connecting pipe; 220, Fourth connecting pipe; 230, Filter; 240, Proportional flow valve; 250, Second solenoid valve 260. Vacuum generator; 270. Third solenoid valve; 280. Pressure sensor; 290. Flushing pipe; 300. Support frame; 310. Support plate; 320. Connecting bolt; 330. Connecting leg; 340. Polyurethane buffer strip; 350. Cooling fan; 360. Heat dissipation hole; 370. Silencing filter; 380. Safety valve; 390. Pressure switch; 400. Opening; 410. Inspection door; 500. Industrial control computer. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The features and performance of the universal airbag detection device of this application will be further described in detail below with reference to embodiments.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, this application provides a universal airbag testing device, which includes a test box 100 with casters 110 connected to the four corners of the bottom. An inflation port 120 and an air extraction port 130 are connected to one outer wall of the test box 100. A drain port 140 is connected to the bottom plate of the test box 100. Two air compressors 150, an air tank 160, and a dual-valve pressure controller 170 are fixedly connected to the top surface of the top plate inside the test box 100. An industrial control computer 500 is connected to the rear wall inside the test box 100. The exhaust port of each air compressor 150 is connected to a first connecting pipe 180 equipped with a first solenoid valve 190. A gas storage tank 160 is connected to a pressure switch 390. The gas storage tank 160 is connected to an inflation port 120, a suction port 130, and a drain port 140 via a second connecting pipe 200, a third connecting pipe 210, and a fourth connecting pipe 220. As the second connecting pipe 200 moves away from the gas storage tank 160, it is sequentially connected to a filter 230, a proportional flow valve 240, and a dual-valve pressure controller 170. As the third connecting pipe 210 moves away from the gas storage tank 160, it is sequentially connected to a second solenoid valve 250, a vacuum generator 260, and a pressure sensor 280. A third solenoid valve 270 is mounted on the fourth connecting pipe 220. The filter 230 is also connected to a flushing pipe 290, which is connected to the fourth connecting pipe 220 between the third solenoid valve 270 and the drain port 140.

[0027] Each air compressor 150 has an air inlet connected to a silencer filter 370 and an exhaust port connected to a safety valve 380. Each air compressor 150 has a support frame 300 connected to its bottom at both ends. Each support frame 300 is connected to a support plate 310 located at its bottom by two connecting bolts 320. The bottom of each support plate 310 is welded to the top surface of the inner bottom plate of the test chamber 100 by two connecting legs 330. A polyurethane buffer strip 340 is provided between the support frame 300 and the support plate 310, and the connecting bolts 320 pass through the polyurethane buffer strip 340.

[0028] The test chamber 100 is equipped with a cooling fan 350. Eighty-one arrayed ventilation holes 360 are located on the outer wall of the test chamber 100, positioned to one side of the cooling fan 350. The cooling fan 350 drives air out of the test chamber 100 through the ventilation holes 360. The front side of the test chamber 100 has an opening 400 connecting to its interior. The test chamber 100 is hinged with a maintenance door 410 that can rotate to open and close the opening 400. The industrial control computer 500 is electrically connected to two air compressors 150, a dual-valve pressure controller 170, two first solenoid valves 190, a proportional flow valve 240, a second solenoid valve 250, and a third solenoid valve 270. In this embodiment, the air compressors 150 are oil-free air compressors.

[0029] The working principle of the universal airbag detection device provided in this application embodiment is as follows: When an airbag inflation test is required, connect the airbag to be tested to the inflation port 120, control the first solenoid valve 190 to connect the first connecting pipe 180, control the air compressor 150 to start, draw in air from the air inlet, compress it, and then send it into the air tank 160. Subsequently, control the flow rate of the proportional flow valve 240 to the minimum, so that the air compressed by the air compressor 150 enters the air tank 160, is filtered by the filter 230, and the flow rate is regulated by the proportional flow valve 240 before passing through the dual-valve pressure controller 170 and exiting from the inflation port 120. During the inflation process, the dual-valve pressure controller 170 controls the compressed air pressure supplied to the airbag according to the required inflation pressure. When the pressure inside the airbag approaches the required set pressure, the proportional flow valve 240 is controlled to continue supplying gas to the airbag at a smaller flow rate, ensuring that the dual-valve pressure controller 170 detects a more accurate pressure. When the inflation pressure inside the airbag reaches the set value, the first solenoid valve 190 and the air compressor 150 are closed, and the inflation port 120 is separated from the airbag to be tested, thus completing the inflation test.

[0030] When a vacuum test is required on the airbag, connect the airbag to be tested to the vacuum port 130, control the first solenoid valve 190 to connect to the first connecting pipe 180, control the air compressor 150 to start, draw in air from the air inlet, compress it, and then send it to the air tank 160. Control the second solenoid valve 250 to connect to the third connecting pipe 210, so that the air compressed by the air compressor 150 enters the air tank 160, passes through the second solenoid valve 250, enters the vacuum generator 260, and is discharged from the exhaust port of the vacuum generator 260. This creates a vacuum pressure at the vacuum port of the vacuum generator 260, and through the connected vacuum port 130, the air inside the airbag to be tested is extracted. Observe the airbag. When the airbag is vacuumed to fit, control the first solenoid valve 190 and the second solenoid valve 250 to close, control the air compressor 150 to turn off, and separate the vacuum port 130 from the airbag to be tested. The vacuum test is then complete. After prolonged use of the airbag universal testing device, it is necessary to drain any residual oil or water from the air tank 160. Control the first solenoid valve 190 to connect to the first connecting pipe 180, and control the air compressor 150 to start, drawing in compressed air from the air inlet and feeding it into the air tank 160. Control the third solenoid valve 270 to connect to the fourth connecting pipe 220, allowing the compressed air from the air compressor 150 to enter the air tank 160 and then exit through the fourth connecting pipe 220, thus draining any residual oil or water from the air tank 160. Simultaneously, the air in the air tank 160 is filtered by the filter 230 and then discharged through the fourth connecting pipe 220 for auxiliary flushing. After flushing is complete, control the first solenoid valve 190 and the third solenoid valve 270 to disconnect and control the air compressor 150 to shut down, completing the flushing operation.

[0031] Each air compressor 150 has an air inlet connected to a silencer filter 370, which reduces noise during air intake and filters the intake air to reduce water and oil impurities. Each air compressor 150 has a support frame 300 connected to its bottom at both ends. The support frame 300 is connected to a support plate 310 at its bottom by two connecting bolts 320. The bottom of each support plate 310 is welded to the top surface of the inner bottom plate of the test chamber 100 by two connecting legs 330. A polyurethane buffer strip 340 is provided between the support frame 300 and the support plate 310. The connecting bolts 320 pass through the polyurethane buffer strip 340, which provides elastic support for the support frame 300 and the air compressor 150, effectively reducing the vibration transmitted to the test chamber 100 during the operation of the air compressor 150.

[0032] The test chamber 100 is equipped with a cooling fan 350. An array of ventilation holes 360 are arranged on the outer wall of the test chamber 100, located to one side of the cooling fan 350. The airflow generated by the cooling fan 350 propels air through the ventilation holes 360 to dissipate heat from the test chamber 100, preventing heat buildup and potential equipment malfunction. The front side of the test chamber 100 has an opening 400 connecting to its interior. The test chamber 100 is hinged to a rotatable access door 410 that allows for easy opening and closing of the opening 400, facilitating personnel access for maintenance of the internal equipment.

[0033] The advantages of the universal airbag testing device provided in this application are: simple structure, convenient and quick to use, automatic adjustable inflation pressure, precise control, large flow rate, no need for external air cylinder, universal testing of multiple models, good practicality, easy to promote and apply, and great promotional value.

[0034] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A universal airbag testing device, comprising a test box with multiple casters at the bottom, characterized in that, The outer wall of the test chamber is connected to an inflation port, an air extraction port, and a drainage port. At least two air compressors, an air tank, and a dual-valve pressure controller are fixedly connected to the bottom of the test chamber. The exhaust port of each air compressor is connected to the air tank through a first connecting pipe equipped with a first solenoid valve. The air tank is connected to the inflation port, the air extraction port, and the drainage port through a second connecting pipe, a third connecting pipe, and a fourth connecting pipe. The second connecting pipe is connected in sequence to a filter, a proportional flow valve, and the dual-valve pressure controller as it moves away from the air tank. The third connecting pipe is connected in sequence to a second solenoid valve and a vacuum generator as it moves away from the air tank. The fourth connecting pipe is equipped with a third solenoid valve.

2. The universal airbag detection device according to claim 1, characterized in that, A pressure sensor is connected to the third connecting pipe between the vacuum generator and the air extraction port.

3. The universal airbag detection device according to claim 1, characterized in that, The filter is connected to a flushing pipe, which is connected to the fourth connecting pipe between the third solenoid valve and the drain port.

4. The universal airbag detection device according to claim 1, characterized in that, Each of the air compressors has a support frame connected to its bottom at both ends. The support frame is connected to the support plate at its bottom by multiple connecting bolts. The bottom of each support plate is connected to the bottom wall of the test chamber by multiple connecting legs.

5. The universal airbag detection device according to claim 4, characterized in that, A polyurethane buffer strip is provided between the support frame and the support plate, and the connecting bolt passes through the polyurethane buffer strip.

6. The universal airbag detection device according to claim 1, characterized in that, The test chamber is equipped with a cooling fan, and the outer wall of the test chamber has multiple heat dissipation holes located on one side of the cooling fan. The cooling fan is used to push air out of the test chamber through the heat dissipation holes.

7. The universal airbag detection device according to claim 6, characterized in that, Each of the air compressors is connected to a silencer filter at its air inlet.

8. The universal airbag detection device according to claim 1, characterized in that, Each of the air compressors is connected to a safety valve at its exhaust port.

9. The universal airbag detection device according to claim 1, characterized in that, The gas storage tank is connected to a pressure switch.

10. The universal airbag detection device according to claim 1, characterized in that, The test chamber has an opening on one side that connects to its interior, and the test chamber is hinged to a maintenance door that can be rotatably opened and closed.

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