A kind of inflatable decompression quick-release structure

Abstract

The present invention relates to the technical field of using and ensuring tethered balloons, and discloses an inflation and decompression quick-release structure, which includes: an inflation port joint connected to a sphere to be inflated, an adapter joint connected to an air source, an inflation and decompression tube, and an inflation end cap; the inflation and decompression tube is detachably arranged between the inflation port joint and the adapter joint; the inflation end cap is detachably arranged at the air inlet of the inflation port joint. The inflation and decompression quick-release structure provided by the present invention can solve the problem of vibration damage to the sphere material caused by helium entering the sphere too quickly and at too high a pressure by arranging a detachable inflation and decompression tube and an inflation end cap, and can realize rapid inflation with a large flow rate. At the same time, the structure can be quickly connected and disassembled with the sphere, which reduces the personnel requirements during the inflation process, reduces safety hazards, and improves the deployment efficiency of the airship.

Description

Technical Field

[0001] The invention relates to the technical field of tethered balloon use assurance, and in particular to an inflation and decompression quick-release structure. Background Art

[0002] When inflating large-volume aerostats such as stratospheric airships and tethered balloons, the existing inflation method is to install a helium inflation port on the sphere and connect the inflation port to the helium exhaust through a high-pressure hose, such as Figure 1 As shown. The helium inflation port is connected to the high-pressure hose through a threaded connection. Usually, the diameter of the helium inflation port is the same as that of the high-pressure hose, which is smaller, and the inflation port does not have a decompression structure, and the high-pressure helium is directly released in the sphere. Due to the lack of a helium decompression buffer structure, this inflation method will cause the helium to enter the sphere too quickly. When the inflation process begins, the sphere has not yet been formed, and the sphere material near the inflation port will be continuously impacted by the high-speed helium flow, thereby continuously vibrating. During the inflation process that lasts for several hours, the sphere material will be thinned or even damaged. In order to reduce the impact of the helium flow on the sphere material, the inflation speed must be slowed down and multiple people must be arranged to pull the sphere membrane, which reduces the inflation speed and increases manpower consumption; at the same time, the direct release of high-speed helium flow will generate huge noise, which will undoubtedly cause harm to the operator; the helium connector is connected to the inflation pipeline through a threaded connection. When encountering special circumstances where the inflation speed needs to be increased or the inflation structure needs to be disconnected, the traditional inflation equipment and methods cannot meet the requirements of large flow and quick disconnection, and the entire system has great safety hazards.

[0003] For example, the Chinese patent "CN109140086A An automatically detachable inflation connector for a tethered balloon" solves the problem of quick connection of the inflation connector, but this method is only applicable to small tethered balloons, the inflation flow is limited by the structural form, and the problem of thinning and damage caused by the airflow impacting the spherical material is not solved. Therefore, it cannot be used for the inflation of large stratospheric airships and large tethered balloons. Summary of the invention

[0004] In view of the above technical defects and application requirements, an embodiment of the present invention provides an inflation and decompression quick-release structure, which is used to solve the problem of vibration damage to the sphere material caused by helium entering the sphere too quickly and at too high a pressure.

[0005] In order to solve the above problems, the present invention provides an inflation and decompression quick-release structure, comprising: an inflation port joint connected to a spherical body to be inflated, an adapter joint connected to an air source, an inflation and decompression tube and an inflation end cover; the inflation and decompression tube is detachably arranged between the inflation port joint and the adapter joint; the inflation end cover is detachably arranged at the air inlet of the inflation port joint.

[0006] Furthermore, the inflation and decompression pipe comprises: a plurality of inflation and decompression sections; each of the inflation and decompression sections is provided with at least one baffle, and the cross-sections of the inflation and decompression sections increase successively along the gas transmission direction.

[0007] Furthermore, the inflation and decompression sections along the gas transmission direction are respectively a first inflation and decompression section, a second inflation and decompression section, a third inflation and decompression section and a fourth inflation and decompression section;

[0008] A first baffle is provided in the first inflation decompression section, a second baffle is provided in the second inflation decompression section, a third baffle is provided in the third inflation decompression section, and a fourth baffle is provided in the fourth inflation decompression section.

[0009] Furthermore, the inflation and decompression quick-release structure further includes: a first sealing unit and a buckle;

[0010] The buckle is arranged on the inflation port joint and the inflation pressure relief tube; the first sealing unit is arranged between the inflation port joint and the inflation pressure relief tube;

[0011] The inflation port joint is sealed and connected to the inflation pressure relief tube through the first sealing unit and the buckle.

[0012] Furthermore, the inflation and decompression quick-release structure further comprises: a filter screen, a flange and a flange pressure ring;

[0013] The ball to be inflated is sleeved outside the first end of the filter screen, the inflation port of the ball to be inflated is clamped between the flange and the flange pressing ring, and the second end of the filter screen is connected to the inflation port joint through the flange and the flange pressing ring.

[0014] Furthermore, the inflation and decompression quick-release structure further comprises: a second sealing unit and a bolt;

[0015] The second sealing unit and the bolts are both arranged on the flange and the flange pressing ring, and the inflation port of the ball to be inflated is fixed between the flange and the flange pressing ring through the second sealing unit and the bolts.

[0016] Furthermore, the inflation and decompression quick-release structure also includes: a third sealing unit; the third sealing unit is arranged between the air inlet of the inflation port joint and the inflation end cover, and the inflation end cover is sealed and connected to the inflation port joint through the third sealing unit.

[0017] Furthermore, the first sealing unit comprises:

[0018] An outer sealing ring of the inflation and decompression section and an inner sealing ring of the inflation and decompression section;

[0019] The two contact surfaces where the inflation port joint abuts against the inflation pressure relief tube are respectively provided with the inflation pressure relief section outer sealing ring and the inflation pressure relief section inner sealing ring; the inflation port joint is sealed and connected to the inflation pressure relief tube via the inflation pressure relief section outer sealing ring, the inflation pressure relief section inner sealing ring and the buckle.

[0020] Furthermore, a buffer material for buffering helium and a filter plate for fixing the buffer material are provided in the filter screen.

[0021] Furthermore, the inflation and decompression tube further comprises: a heat-insulating layer; the heat-insulating layer is wrapped around the plurality of inflation and decompression sections.

[0022] The inflation and decompression quick-release structure provided by the present invention can solve the problem of vibration damage to the sphere material caused by helium entering the sphere too quickly and at too high a pressure by providing a detachable inflation and decompression tube and an inflation end cover, and can achieve rapid inflation with a large flow rate. At the same time, the structure can be quickly connected to and disassembled from the sphere, thereby reducing the personnel requirements during the inflation process, reducing safety hazards and improving the deployment efficiency of the airship. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of an inflatable structure of an aerostat in the prior art;

[0025] Figure 2 A front view of the inflation and decompression quick-release structure provided by an embodiment of the present invention;

[0026] Figure 3 A cross-sectional view of an inflation and decompression quick-release structure provided in an embodiment of the present invention;

[0027] Figure 4 A cross-sectional view of an inflatable end cover after connection provided by an embodiment of the present invention;

[0028] Figure 5 A front view of the inflatable end cover after connection provided by an embodiment of the present invention;

[0029] Figure 6 A partial schematic diagram of the connection between the inflation port connector and the inflation pressure relief pipe provided in an embodiment of the present invention;

[0030] Figure 7A partial schematic diagram of the connection between the inflation port connector and the ball to be inflated provided in an embodiment of the present invention;

[0031] Figure 8 A partial schematic diagram of the connection between the inflation port connector and the inflation end cover provided in an embodiment of the present invention;

[0032] Fig. 9 A schematic diagram of a first baffle provided in an embodiment of the present invention;

[0033] Explanation of the reference numerals in the accompanying drawings: 1. filter screen; 2. flange; 3. edge of the sphere to be inflated; 4. flange pressure ring; 5. inflation port joint; 6. buckle; 7. inflation pressure relief pipe; 8. insulation layer; 9. adapter joint; 10. buffer material; 11. flange sealing ring; 12. flange pressure ring sealing ring; 13. filter plate sealing ring; 14. filter plate; 15. flange inflation port inner sealing ring; 16. inflation pressure relief section outer sealing ring; 17. inflation pressure relief section inner sealing ring; 18. fourth baffle; 19. third baffle; 20. second baffle; 21. first baffle; 22. inflation end cover; 23. flange inflation port end cover sealing ring. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The embodiment of the present invention provides an inflation and decompression quick-release structure, which is mainly used for inflating stratospheric airships and tethered balloons. Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the inflation and decompression quick-release structure comprises: an inflation port connector 5 connected to the sphere to be inflated, an adapter connector 9 connected to the gas source, an inflation and decompression tube 7, and an inflation end cap 22. The inflation and decompression tube 7 is detachably arranged between the inflation port connector 5 and the adapter connector 9. The inflation end cap 22 is detachably arranged at the air inlet of the inflation port connector 5.

[0037] When preparing for inflation, first align the inflation pressure relief tube 7 with the inflation port connector 5, and adjust the circumferential position to ensure that the inflation pressure relief tube 7 is aligned and connected to the inflation port connector 5, and then connect the adapter connector 9 to the other end of the inflation pressure relief tube 7. Then connect the sphere to be inflated with the inflation port connector 5, and after connecting the adapter connector 9 to the air source, inflation can begin. After inflation is completed, the inflation pressure relief tube 7 and the adapter connector 9 can be removed, and the inflation end cover 22 can be set at the air inlet of the inflation port connector 5, and the inflation pressure relief quick-release structure is sealed by the inflation end cover 22.

[0038] The inflation and decompression quick-release structure provided in the embodiment of the present invention can solve the problem of vibration damage to the sphere material caused by helium entering the sphere too quickly and at too high a pressure by providing a detachable inflation and decompression tube and an inflation end cover, and can achieve rapid inflation with a large flow rate. At the same time, this structure can be quickly connected to and disassembled from the sphere, thereby reducing the personnel requirements during the inflation process, reducing safety hazards and improving the deployment efficiency of the airship.

[0039] In one embodiment provided by the present invention, Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the inflation and decompression pipe 7 comprises: a plurality of inflation and decompression sections. At least one baffle is arranged in each inflation and decompression section, and the cross-section of each inflation and decompression section increases successively along the transmission direction of the gas.

[0040] Among them, Fig. 9 As shown, the baffle is a perforated baffle. Due to the blocking, silencing and expansion of the gas passage of the baffle, the pressure, noise and speed of the helium gas flow can be reduced.

[0041] Among them, the inflation and decompression section is welded by four sections of aviation aluminum tubes of different diameters. The inflation and decompression sections along the gas transmission direction are the first inflation and decompression section, the second inflation and decompression section, the third inflation and decompression section and the fourth inflation and decompression section. The inflation and decompression pipe 7 and the adapter 9 form a three-fold diameter change, which expands the diameter of the gas passage by 7 times. The diameter change shape of the inflation and decompression section is determined by fluid mechanics simulation calculation. The adapter 9 is used to connect the helium high-pressure hose and the inflation and decompression section.

[0042] Preferably, a first baffle 21 may be provided in the first inflation and decompression section, a second baffle 20 may be provided in the second inflation and decompression section, a third baffle 19 may be provided in the third inflation and decompression section, and a fourth baffle 18 may be provided in the fourth inflation and decompression section.

[0043] It is understandable that the position of the baffle can also be adjusted accordingly. For example, in the present embodiment, no baffle is provided in the first inflation decompression section, while a first baffle 21 is provided in the second inflation decompression section, a second baffle 20 and a third baffle 19 are provided at the same time in the third inflation decompression section, and a fourth baffle 18 is provided in the fourth inflation decompression section.

[0044] The inflation and decompression quick-release structure further includes: a first sealing unit and a buckle 6. The buckle 6 is a quick-release buckle. The buckle 6 is arranged on the inflation port joint 5 and the inflation and decompression tube 7. The first sealing unit is arranged between the inflation port joint 5 and the inflation and decompression tube 7. The inflation port joint is sealed and connected to the inflation and decompression tube 7 through the first sealing unit and the buckle 6.

[0045] Specifically, Figure 6 As shown, the sealing of the inflation port connector 5 and the inflation pressure relief tube 7 is achieved by boss sealing. Among them, the first sealing unit includes: an inflation pressure relief section outer sealing ring 16 and an inflation pressure relief section inner sealing ring 17. The two contact surfaces where the inflation port connector 5 abuts against the inflation pressure relief tube 7 are respectively provided with an inflation pressure relief section outer sealing ring 16 and an inflation pressure relief section inner sealing ring 17. The inflation port connector 5 is sealed and connected to the inflation pressure relief tube 7 through the inflation pressure relief section outer sealing ring 16, the inflation pressure relief section inner sealing ring 17 and the buckle 6.

[0046] In this embodiment, the inflation and decompression quick-release structure further includes: a filter screen 1, a flange 2 and a flange pressing ring 4. The sphere to be inflated is sleeved outside the first end of the filter screen 1, the inflation port of the sphere to be inflated is clamped between the flange 2 and the flange pressing ring 4, and the second end of the filter screen 1 is connected to the inflation port joint 5 through the flange 2 and the flange pressing ring 4.

[0047] The filter screen 1 is provided with a buffer material 10 for buffering helium and a filter plate 14 for fixing the buffer material 10. After the helium passes through the filter screen 1, it can enter the interior of the sphere. The filter plate 14 is used to rectify the helium flow and lock the buffer material 10 in the filter screen 1 in the sphere. The buffer material 10 in the sphere is a porous and breathable foam material. When the fully rectified, depressurized and decelerated helium flow passes through, it can form further buffering and noise reduction. Protect the edge of the sphere to be inflated near the inflation port from the impact of the high-speed helium flow.

[0048] To ensure the airtightness of the inflation, Figure 7As shown, the inflation and decompression quick-release structure also includes: a second sealing unit and bolts. The second sealing unit and the bolts are both arranged on the flange 2 and the flange pressure ring 4, and the inflation port of the sphere to be inflated is fixed between the flange 2 and the flange pressure ring 4 through the second sealing unit and the bolts. Among them, the second sealing unit includes: a flange sealing ring 11, a flange pressure ring sealing ring 12, a filter plate sealing ring 13, and a flange inflation port inner sealing ring 15. The fixing of each sealing ring ensures the sealing of the connection between the inflation port joint 5 and the sphere to be inflated.

[0049] Since the expansion of high-pressure helium will absorb heat, the surface temperature of the inflation and decompression tube 7 will be significantly lower than the ambient temperature when used for a long time. At the same time, a lot of noise will be generated when the high-pressure helium is released. Therefore, a layer of insulation layer 8 with heat preservation and noise reduction functions is attached to the outside of the inflation and decompression tube 7. The insulation layer 8 is wrapped around the outside of the plurality of inflation and decompression sections, and EVA foam can be used to protect the operator.

[0050] To prevent leakage after inflation, Figure 8 As shown, the inflation and decompression quick-release structure also includes: a third sealing unit. The third sealing unit is arranged between the air inlet of the inflation port connector 5 and the inflation end cover 22, and the inflation end cover 22 is sealed and connected to the inflation port connector 5 through the third sealing unit. In this embodiment, the third sealing unit is a flange inflation port end cover sealing ring, and the inflation end cover 22 needs to be bonded to the flange inflation port end cover sealing ring 23 in advance when sealing.

[0051] In a specific embodiment, the preparations before starting inflation are as follows: first place the buffer material 10 in the filter screen 1. Bond the flange 2 to the flange seal 11. Bond the flange pressure ring 4 to the flange pressure ring seal 12. Bond the filter plate 14 to the filter plate seal 13. Bond the inflation port joint 5 to the inner seal 15 of the flange inflation port, and bond the inflation pressure relief pipe 7 to the outer seal 16 of the inflation pressure relief section and the inner seal 17 of the inflation pressure relief section. Use the flange and the flange pressure ring 4 to clamp the edge 3 of the sphere to be inflated in the middle and tighten with bolts. Pass the filter screen 1 through the flange 2 and make it close to the edge 3 of the sphere to be inflated, and then place the filter plate 14 and the inflation port joint 5. After aligning the bolt holes on the inner circle of the flange 2, fix the flange 2, the filter plate 14, and the inflation port joint 5 with bolts. When preparing for inflation, first align the concave surface of the inflation pressure relief tube 7 and insert it into the convex surface of the inflation port connector 5, and adjust the circumferential position to ensure that the buckle 6 on the inflation port connector 5 is aligned with the buckle 6 on the inflation pressure relief tube 7. Then tighten the four buckles 6 to provide sealing compression force. Finally, connect the adapter 9 to the helium high-pressure hose, that is, the installation of the inflation pressure relief quick-release structure is completed, and inflation can begin. When sealing, the inflation end cover 22 needs to be bonded to the flange inflation port end cover sealing ring 23 in advance. After inflation is completed, the buckle 6 can be punched to quickly separate the inflation pressure relief tube 7, the high-pressure hose and the ball to be inflated. At this time, under the action of the buffer material 10 in the ball, the helium leakage speed is very slow. Finally, the inflation end cover 22 is screwed into the inflation port connector 5 through a thread. The flange inflation port end cover sealing ring 23 is used to form a seal at the inflation port connector 5 through a threaded compression method.

[0052] The inflation and decompression quick-release structure provided in the embodiment of the present invention can solve the problem of vibration damage to the sphere material caused by helium entering the sphere too quickly and at too high a pressure by providing a detachable inflation and decompression tube and an inflation end cover, and can achieve rapid inflation with a large flow rate. At the same time, this structure can be quickly connected to and disassembled from the sphere, thereby reducing the personnel requirements during the inflation process, reducing safety hazards and improving the deployment efficiency of the airship.

[0053] In summary, the use of the inflation and decompression quick-release structure can reduce the number of personnel required when inflating large aerostats such as stratospheric airship tethered balloons, and only one person is needed, or even no human supervision is required for the inflation port. The inflation and decompression quick-release structure can greatly increase the helium inflation speed of large aerostats such as stratospheric airship tethered balloons, shorten the inflation time, and improve the deployment efficiency of the aerostat. The inflation and decompression quick-release structure can reduce the noise generated by the high-speed helium release during inflation.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An inflation and decompression quick-release structure for a large-volume aerostat, characterized in that: include: An inflating port connector connected to the sphere to be inflated, a switching connector connected to the gas source, an inflating pressure reducing tube and an inflating end cap; The inflation pressure relief pipe is detachably arranged between the inflation port joint and the adapter joint; the inflation end cap is detachably arranged at the air inlet of the inflation port joint; The inflation and decompression pipe comprises: a plurality of inflation and decompression sections; each of the inflation and decompression sections is provided with at least one baffle, and the cross-sections of the inflation and decompression sections increase in sequence along the gas transmission direction; The inflation and decompression quick-release structure further includes: a first sealing unit and a buckle; The buckle is arranged on the inflation port joint and the inflation pressure relief pipe; the first sealing unit is arranged between the inflation port joint and the inflation pressure relief pipe; The inflation port connector is sealed and connected to the inflation pressure relief tube through the first sealing unit and the buckle; A buffer material for buffering helium and a filter plate for fixing the buffer material are arranged in the filter screen, and the buffer material is a porous and breathable foam material; The inflation and decompression pipe further comprises: a heat-insulating layer; the heat-insulating layer is wrapped around the plurality of inflation and decompression sections; The inflation and decompression quick-release structure also includes: a filter screen, a flange and a flange pressure ring; The sphere to be filled is sleeved on the outside of the first end of the filter screen, and the filter screen is sleeved inside the sphere to be filled, the inflation port of the sphere to be filled is clamped between the flange and the flange pressure ring, and the second end of the filter screen is connected to the inflation port joint through the flange and the flange pressure ring.

2. The inflation and decompression quick-release structure according to claim 1, characterized in that: The inflation and decompression sections along the gas transmission direction are respectively the first inflation and decompression section, the second inflation and decompression section, the third inflation and decompression section and the fourth inflation and decompression section; A first baffle is provided in the first inflation decompression section, a second baffle is provided in the second inflation decompression section, a third baffle is provided in the third inflation decompression section, and a fourth baffle is provided in the fourth inflation decompression section.

3. The inflation and decompression quick-release structure according to claim 1, characterized in that: The inflation and decompression quick-release structure further includes: a second sealing unit and a bolt; The second sealing unit and the bolts are both arranged on the flange and the flange pressing ring, and the inflation port of the ball to be inflated is fixed between the flange and the flange pressing ring through the second sealing unit and the bolts.

4. The inflation and decompression quick-release structure according to claim 1, characterized in that: The inflation and decompression quick-release structure also includes: a third sealing unit; the third sealing unit is arranged between the air inlet of the inflation port connector and the inflation end cover, and the inflation end cover is sealed and connected to the inflation port connector through the third sealing unit.

5. The inflation and decompression quick-release structure according to claim 1, characterized in that: The first sealing unit comprises: An outer sealing ring of the inflation and decompression section and an inner sealing ring of the inflation and decompression section; The two contact surfaces where the inflation port joint abuts against the inflation pressure relief tube are respectively provided with the inflation pressure relief section outer sealing ring and the inflation pressure relief section inner sealing ring; the inflation port joint is sealed and connected to the inflation pressure relief tube via the inflation pressure relief section outer sealing ring, the inflation pressure relief section inner sealing ring and the buckle.

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