Helium airbag expansion height control device

Abstract

The utility model belongs to the technical field of airbag detection, and relates to a helium airbag expansion height control device which comprises a mounting rack and an airbag, the mounting rack is provided with a guide rail, and the guide rail is connected with a mounting plate; an air inlet is formed in the top of the air bag, and an air outlet is formed in the bottom of the air bag; the top of the air bag is fixedly connected with a fixing frame, the fixing frame is provided with a hanging ring, the hanging ring is connected with a pulling rope, the pulling rope is provided with a sliding block and slidably connected with a first pulley and a second pulley, a contact type electronic switch is arranged under the second pulley, the mounting frame is provided with a spring balancer, and the output end of the spring balancer is fixedly connected with the fixing frame. The top of the air bag is always on the same plane, even if the fixing frame inclines, the measured height of the air bag is still accurate, the spring balancer matched with the fixing frame is installed on the installation frame, the pressure of the spring balancer and the pressure of the fixing frame are counteracted, and it is guaranteed that the air pressure in the air bag is kept normal.

Description

Technical Field

[0001] The utility model belongs to the technical field of airbag detection, and in particular relates to a helium airbag inflation height control device. Background Art

[0002] Helium has been widely used in the fields of chemical industry, high-precision welding, etc., and the demand is huge. However, since helium is a rare, non-renewable gas and its storage capacity is extremely small, the price of helium is constantly rising. Therefore, helium recovery has extremely high economic benefits. In the process of BOG helium extraction, the circulating air compressor and the filling position recycle helium. Since the speed of helium recovery is slow, a helium recovery airbag is usually set up. The outlet of the airbag is connected to the inlet of the helium recovery compressor, and the outlet of the helium recovery compressor is connected to the inlet of the BOG raw material air compressor. When the helium in the airbag is full, the helium compressor needs to be operated in time. When the helium in the airbag is close to being evacuated, the helium compressor needs to be shut down in time, so the inflation height of the airbag needs to be detected.

[0003] The utility model patent with publication number CN211121077U provides an airbag inflation height detection device and a helium recovery and purification system. By setting a fixing part to fix the bottom of the airbag to be tested, and setting a pendulum on the top of the airbag to be tested, the inflation height of the airbag to be tested can be represented by the height of the pendulum. By setting a pulley mechanism and hanging the pendulum and the connecting rod at both ends of the traction line, the connecting rod can be vertically lowered and the pendulum can be vertically raised when the airbag to be tested is inflated, and the change in the pendulum height is converted into the change in the connecting rod position, so that the position of the connecting rod can be continuously detected by the position detection mechanism to achieve continuous detection of the inflation height of the airbag to be tested.

[0004] In the above-mentioned prior art solution, the airbag is made of soft material, its force points are uneven, and the height of the airbag is uneven. The height of the airbag measured at a single point is not representative. The height of the connection point between the airbag and the traction line may be different from the height of other positions of the airbag, resulting in a deviation in the measured airbag height. When the deviation is serious, the work of this section may not be able to operate normally, causing huge economic losses. Utility Model Content

[0005] The utility model aims to provide a helium airbag inflation height control device to solve the problems raised in the above background technology.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0007] A helium airbag inflation height control device comprises a mounting frame and an airbag, wherein a guide rail is mounted at the bottom of the mounting frame, a mounting plate is slidably connected to the guide rail, an airbag is mounted on the mounting plate, the airbag is provided with an air inlet and an air outlet, the air outlet is provided with a solenoid valve, the air outlet is connected with an air outlet pipeline, and the air outlet pipeline is connected with a recovery air compressor; a fixing frame is fixedly connected to the top of the airbag, a lifting ring is provided at the top of the fixing frame, the position of the lifting ring corresponds to the center position of the top of the airbag, a traction rope is connected to the lifting ring, a slider is connected to the end of the traction rope away from the lifting ring, the traction rope is matched with a first pulley and a second pulley, the first pulley is mounted on the mounting frame and is located directly above the lifting ring; a switch mounting rod is provided on one side of the guide rail, the switch mounting rod is vertically arranged, a contact electronic switch is provided on the switch mounting rod, the second pulley is mounted on the top of the switch mounting rod, the slider cooperates with the contact electronic switch, the contact electronic switch is electrically connected with a controller, the controller is electrically connected to the solenoid valve, and the controller is electrically connected to the recovery air compressor.

[0008] As an improvement, the contact type electronic switch comprises a sliding track, the slider is slidably connected to the sliding track, a first contact point is provided at the upper portion of the sliding track, and a second contact point is provided at the lower portion of the sliding track.

[0009] As an improvement, a spring balancer is installed at the bottom of the mounting frame, the spring balancer is fixedly connected to the fixing frame, and the spring balancer is arranged perpendicular to the fixing frame.

[0010] As an improvement, an electric hoist is installed at the bottom of the mounting frame, and the output end of the electric hoist is fixedly connected to the mounting plate.

[0011] As an improvement, the recovery air compressor is connected to an exhaust pipe, and the exhaust pipe is connected to a buffer tank.

[0012] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] The utility model provides a helium airbag inflation height control device, which ensures that the top of the airbag is always on a plane by setting a fixing frame, a lifting ring and a traction rope, so that the height of the measured point is the accurate height of the airbag, and even if the fixing frame is tilted, the measured height of the airbag is still accurate, and the mounting frame is equipped with a spring balancer matched with the fixing frame, so that the pressure of the spring balancer and the fixing frame are offset, thereby ensuring that the air pressure in the airbag remains normal.

[0014] The utility model is provided with a traction rope, a slider and a contact electronic switch, and the height information of the airbag is transmitted to the contact electronic switch through the traction rope and the slider, and the contact electronic switch controls the operation of the recovery air compressor. When the height of the airbag reaches the second contact point, the recovery air compressor is turned on to discharge the helium in the airbag, so that the height of the airbag becomes lower; when the height of the airbag reaches the first contact point, the recovery air compressor is turned off, and the helium continues to enter the airbag from the air inlet, so that the height of the airbag increases, and the height of the airbag is controlled within a certain range.

[0015] The utility model can realize the up and down movement of the airbag by arranging an electric hoist and a mounting plate that can be slidably connected on the guide rail. When the airbag needs to be inspected, the airbag can be lowered to a suitable height for inspection, which is easy to operate and reduces safety risks to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the mounting frame and the airbag of the utility model;

[0018] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0019] Among them: 1. Mounting frame; 2. Guide rail; 3. Air bag; 4. Mounting plate; 5. Air outlet; 6. Solenoid valve; 7. Air outlet pipe; 8. Recovery air compressor; 9. Exhaust pipe; 10. First pulley; 11. Traction rope; 12. Second pulley; 13. Sliding track; 14. First contact point; 15. Second contact point; 16. Sliding block; 17. Buffer tank; 18. Fixed frame; 19. Lifting ring; 20. Spring balancer; 21. Contact electronic switch; 22. Electric hoist; 23. Switch installation. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the specific implementation methods and the accompanying drawings. The accompanying drawings are only for illustrative purposes and are only schematic diagrams, not actual drawings, and should not be construed as limiting the present application. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0021] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] like Figure 1-3 As shown, a helium airbag inflation height control device comprises a mounting frame 1 and an airbag 3, a guide rail 2 is mounted at the bottom of the mounting frame 1, a mounting plate 4 is slidably connected to the guide rail 2, an electric hoist 22 is mounted at the bottom of the mounting frame 1, an output end of the electric hoist 22 is fixedly connected to the mounting plate 4, and the airbag 3 is mounted on the mounting plate 4; the airbag 3 is relatively large in size and is placed on the mounting plate 4. To ensure the normal use of the airbag 3, it is necessary to perform regular inspections on the airbag 3. Since the airbag 3 is too large and occupies more space, the airbag 3 is generally mounted at a higher position to save ground space. The airbag 3 is at a very high position, and it is necessary to climb up to inspect the airbag 3 when inspecting it, which is dangerous and inconvenient. Therefore, structures such as the electric hoist 22, the mounting plate 4, the guide rail 2 and the mounting frame 1 are provided. Driven by the electric hoist 22, the mounting plate 4 can move up and down along the guide rail 2. It is necessary to detect and control the electric hoist 22 to make the mounting plate 4 fall to a suitable position to inspect the airbag 3.

[0023] An air inlet is provided on the top of the airbag 3, and the air inlet is used to inject the required recovered gas into the airbag 3; an air outlet 5 is provided on the bottom of the airbag 3, and the air outlet 5 is equipped with a solenoid valve 6, and the air outlet 5 is connected to an air outlet pipe 7, and a recovery air compressor 8 is installed at one end of the air outlet pipe 7 away from the air outlet 5, and the helium in the airbag 3 can be sucked out by the recovery air compressor 8 through the air outlet 5 and the air outlet pipe 7; the recovery air compressor 8 is installed with an exhaust pipe 9, and a buffer tank 17 is installed at one end of the exhaust pipe 9 away from the recovery air compressor 8, and the gas sucked out by the recovery air compressor 8 enters the buffer tank 17 through the exhaust pipe 9 for storage.

[0024] The top of the airbag 3 is fixedly connected to a fixing frame 18, and the fixing frame 18 is funnel-shaped and used to be connected to the airbag 3. When the top of the airbag 3 is stretched and connected to the fixing frame 18, the top of the airbag 3 can be placed on the same plane when falling, and the situation where part of the airbag 3 falls and part of the airbag does not fall will not occur, thereby avoiding errors in measuring the height of the airbag 3 and causing adverse consequences.

[0025] A lifting ring 19 is provided on the top of the fixing frame 18, and the position of the lifting ring 19 corresponds to the top center position of the airbag 3. The lifting ring 19 is connected to a traction rope 11, and the position of the lifting ring 19 changes with the height of the airbag 3, so that the traction rope 11 moves with the height of the airbag 3; a slider 16 is installed at the end of the traction rope 11 away from the lifting ring 19, and the traction rope 11 is slidably connected to the first pulley 10 and the second pulley 12, and the first pulley 10 and the second pulley 12 work together to change the force direction of the traction rope 11.

[0026] The first pulley 10 is installed on the mounting frame 1 and is located directly above the lifting ring 19, ensuring that the traction rope 11 is always in a vertical state, preventing the traction rope 11 from tilting and causing a large deviation in the position of the airbag 3, thereby affecting the normal use of the airbag 3; a switch mounting rod 23 is provided on one side of the guide rail 2, and the switch mounting rod 23 is vertically arranged. A contact electronic switch 21 is provided on the switch mounting rod 23, and the second pulley 12 is installed at the top of the switch mounting rod 23, and the slider 16 cooperates with the contact electronic switch 21.

[0027] The contact electronic switch 21 includes a sliding track 13, and the slider 16 is slidably connected to the sliding track. A first contact point 14 is provided on the upper part of the sliding track 13, and the first contact point 14 corresponds to the point when the height of the airbag 3 is 5%. A second contact point 15 is provided on the lower part of the sliding track 13, and the second contact point 15 corresponds to the point when the height of the airbag 3 is 95%. The contact electronic switch 21 is electrically connected to the controller. When the slider 16 contacts the first contact point 14, the contact electronic switch 21 transmits a signal to the controller to control the recovery air compressor 8 to close, so that the airbag 3 stops exhausting gas outwards. When the slider 16 contacts the second contact point 15, the contact electronic switch 21 transmits a signal to the controller to control the recovery air compressor 8 to open, so that the airbag 3 starts to exhaust gas outwards, ensuring that the gas content in the airbag 3 is always between 5% and 95%.

[0028] A spring balancer 20 is installed at the bottom of the mounting frame 1, and the output end of the spring balancer 20 is fixedly connected to the fixing frame 18. The spring balancer 20 is arranged vertically to the fixing frame 18. Since the fixing frame 18 has a certain weight, in actual use, the pressure of the gas in the airbag 3 will be greater than the pressure of the gas in a normal state, affecting the normal entry of the gas into the airbag 3. The tension of the spring balancer 20 is set to be the same as the gravity of the fixing frame 18, so that the tension of the spring balancer 20 and the gravity of the fixing frame 18 are offset, so that the pressure in the airbag 3 remains normal.

[0029] The contact electronic switch 21 is electrically connected to a controller, the controller is electrically connected to the solenoid valve 6, and the controller is electrically connected to the recovery air compressor 8. When the height of the airbag 3 reaches ninety-five percent, the slider 16 contacts the second contact point 15, transmits an electrical signal to the controller, and controls the recovery air compressor 8 and the solenoid valve 6 to open. When the height of the airbag 3 reaches five percent, the slider 16 contacts the first contact point 14, transmits an electrical signal to the controller, and controls the recovery air compressor 8 and the solenoid valve 6 to close.

[0030] In summary, in actual use, the air inlet always injects helium into the airbag 3, and the height of the airbag 3 changes. When the height of the airbag 3 reaches 95%, the slider 16 contacts the second contact point 15, transmits an electrical signal to the controller, and controls the recovery air compressor 8 and the solenoid valve 6 to open, so that the recovery air compressor 8 extracts the helium in the airbag 3. The extraction rate of the recovery air compressor 8 is greater than the speed of the air inlet of the airbag 3, and the height of the airbag 3 begins to decrease. The position of the slider moves down and leaves the second contact point 15. When the height of the airbag 3 reaches 95%, the slider 16 contacts the second contact point 15, and transmits an electrical signal to the controller to control the recovery air compressor 8 and the solenoid valve 6 to open, so that the recovery air compressor 8 extracts the helium in the airbag 3. The extraction rate of the recovery air compressor 8 is greater than the speed of the air inlet of the airbag 3. The height of the airbag 3 begins to decrease, and the position of the slider moves down and leaves the second contact point 15. When the height of the airbag 3 reaches 95%, the slider 16 contacts the second contact point 15, and transmits an electrical signal to the controller to control the recovery air compressor 8 and the solenoid valve 6 to open, so that the recovery air compressor 8 extracts the helium in the airbag 3. At five times, the slider 16 contacts the first contact point 14, transmits an electrical signal to the controller, controls the recovery air compressor 8 and the solenoid valve 6 to close, and the air inlet continues to inject helium into the airbag 3, so that the height of the airbag 3 continues to rise, and repeats the previous process. Therefore, the height of the airbag of the utility model has the function of automatic monitoring and adjustment, and the height of the airbag can be controlled between 5% and 95%, thereby ensuring the safe operation of the airbag within a certain range, realizing unattended operation, and being simple, reliable, safe, practical, low investment, and strong operability.

[0031] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A helium airbag inflation height control device, comprising a mounting frame (1) and an airbag (3), characterized in that: A guide rail (2) is installed at the bottom of the mounting frame (1), a mounting plate (4) is slidably connected to the guide rail (2), an air bag (3) is installed on the mounting plate (4), the air bag (3) is provided with an air inlet and an air outlet (5), the air outlet (5) is installed with a solenoid valve (6), the air outlet (5) is connected to an air outlet pipe (7), and the air outlet pipe (7) is connected to a recovery air compressor (8); The top of the airbag (3) is fixedly connected to a fixing frame (18), the top of the fixing frame (18) is provided with a lifting ring (19), the position of the lifting ring (19) corresponds to the center position of the top of the airbag (3), the lifting ring (19) is connected to a traction rope (11), the end of the traction rope (11) away from the lifting ring (19) is connected to a slider (16), the traction rope (11) is cooperatively connected to a first pulley (10) and a second pulley (12), the first pulley (10) is installed on the mounting frame (1) and is located directly above the lifting ring (19); A switch mounting rod (23) is provided on one side of the guide rail (2), the switch mounting rod (23) is arranged vertically, a contact type electronic switch (21) is provided on the switch mounting rod (23), the second pulley (12) is mounted on the top end of the switch mounting rod (23), the slider (16) cooperates with the contact type electronic switch (21), the contact type electronic switch (21) is electrically connected to a controller, the controller is electrically connected to a solenoid valve (6), and the controller is electrically connected to a recovery air compressor (8).

2. The helium airbag inflation height control device according to claim 1, characterized in that: The contact type electronic switch (21) comprises a sliding track (13), the sliding block (16) is slidably connected to the sliding track (13), a first contact point (14) is provided on the upper part of the sliding track (13), and a second contact point (15) is provided on the lower part of the sliding track (13).

3. The helium airbag inflation height control device according to claim 1, characterized in that: A spring balancer (20) is installed at the bottom of the mounting frame (1); the spring balancer (20) is fixedly connected to the fixing frame (18); the spring balancer (20) and the fixing frame (18) are arranged perpendicularly.

4. The helium airbag inflation height control device according to claim 1, characterized in that: An electric hoist (22) is installed at the bottom of the mounting frame (1), and an output end of the electric hoist (22) is fixedly connected to the mounting plate (4).

5. The helium airbag inflation height control device according to claim 1, characterized in that: The recovery air compressor (8) is connected to an exhaust pipe (9), and the exhaust pipe (9) is connected to a buffer tank (17).

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