Emergency helium releasing device for aerostat

Abstract

The emergency helium releasing device comprises transition ring lining cloth, the transition ring lining cloth is connected to the inner surface of an air bag, a tearing width transition ring is connected to the transition ring lining cloth, the tearing width transition ring and the transition ring lining cloth are arranged around an opening of the air bag, and tearing width covering cloth is connected to the tearing width transition ring to cover the opening of the air bag. The device is good in environmental adaptability and high in safety and reliability, controllable helium release can be achieved, and the airbag body cannot be torn or uncontrollably damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of aerostats, and in particular relates to an emergency helium release device for an aerostat. Background Art

[0002] Aerostats are aircraft that are lighter than air. They can generally be divided into airships with power systems and tethered balloons without power systems and anchored to the ground. When the power system of an airship fails or the anchor cable of a tethered balloon breaks, an escape event will occur. As the aerostat continues to rise into the air, it will disintegrate in the air. If it does not disintegrate, it will fly with the wind and even drift into foreign airspace, posing a threat to the safety of the system. In order to ensure the safety of the system during operation, a reliable emergency helium release device must be designed on the airbag, which can realize emergency helium release of the aerostat when the aerostat enters an emergency state.

[0003] There are many types of emergency helium release devices. Among them, the first generation of emergency helium release devices has the risk of misoperation and detonation when pyrotechnics release helium, and the helium valve has the problem of large weight, small diameter and slow helium release speed. The currently commonly used emergency helium release device is the second generation of emergency helium release device, which is a tearing web structure glued to the outer surface of the bladder. However, the environmental adaptability of the glued structure is relatively poor, and it is easy to age, warp and fall off. At the same time, the tail of the tearing web opening is a straight edge, and the fibers of the airbag body are discontinuous. When the tearing web bonding strength is higher than the strength of the airbag body, if the tearing web is opened, it is easy to tear the airbag body along the fiber direction, causing uncontrollable tearing damage to the airbag. Summary of the invention

[0004] Purpose of the Invention

[0005] Aiming at the problems of low reliability, poor environmental adaptability, slow helium release speed, uncontrollable airbag opening size after emergency use, etc. of the existing emergency helium release device, the present invention provides an emergency helium release device for an aerostat.

[0006] Inventing technical solutions

[0007] An emergency helium release device for an aerostat comprises a transition ring lining cloth, the transition ring lining cloth is connected to the inner surface of an airbag, a tear width transition ring is connected to the transition ring lining cloth, the tear width transition ring and the transition ring lining cloth are both arranged around an opening of the airbag, and the tear width cover cloth is connected to the tear width transition ring to cover the opening of the airbag.

[0008] Preferably, the tear width transition ring and the transition ring lining cloth are both ring-shaped with uniform width, and the shape of the inner hole is the same as that of the airbag opening.

[0009] Preferably, the ferry ring lining cloth is connected to the inner surface of the airbag and the tear width transition ring, and the tear width transition ring is connected to the tear width cover cloth by heat sealing. The heat sealing process is mature and stable.

[0010] Preferably, it also includes a safety lining cloth bonded to the surface of the airbag, the safety lining cloth and the head end of the tear width cover cloth are connected by a safety rope, and the tear width pull rope is connected to the safety rope.

[0011] Preferably, the airbag opening is hexagonal, with the front and rear ends being 90 degrees, and the line connecting the centers of the front and rear ends being the axis of symmetry.

[0012] Preferably, the width of the heat-sealed connection between the tear width cover cloth and the tear width transition ring is 30 to 50 mm.

[0013] Preferably, the tear width transition ring and the transition ring lining cloth are both made of bladder material.

[0014] Preferably, the 90° edges formed by the leading and trailing ends of the tear width transition ring are both along the fiber direction of the capsule material.

[0015] Preferably, the fiber direction of the transition ring lining cloth is consistent with the direction of the symmetry axis of the airbag opening.

[0016] Preferably, the front end of the torn width cover cloth extends outward for a certain length, the extended section is glued to the surface of the airbag, the adhesive used in the bonding area does not use a curing agent or the adhesive used in the bonding area uses a curing agent and a narrow strip is heat-sealed inside the edge of the extended section of the torn width cover cloth.

[0017] The invention has the advantages that the device has good environmental adaptability, high safety and reliability, can realize controllable helium release, and will not cause tearing of the airbag body or uncontrollable damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the emergency helium release device of the aerostat.

[0019] Figure 2 This is the exploded view of the emergency helium release device of the aerostat.

[0020] In the figure: 1. round lining cloth; 2. canvas buckle; 3. bonding area; 4. safety lining cloth; 5. safety rope; 6. round lining cloth; 7. tear width pull rope; 8. tear width transition ring; 9. transition ring lining cloth; 10. tear width cover cloth; 11. heat sealing area; 12. airbag cover cloth; 13. airbag opening. DETAILED DESCRIPTION

[0021] The present invention is achieved through the following technical solutions.

[0022] An emergency helium release device for an aerostat, the device comprises a tear-width cover cloth 10, a tear-width transition ring 8, and a transition ring lining cloth 9. The tear-width cover cloth 10 and the tear-width transition ring 8 are connected to the airbag by heat sealing, and have the advantages of controllable peeling load, good environmental adaptability, and reliability. The helium release opening is located at the top of the airbag, and the tear-width cover cloth 10 and the airbag opening are shaped as follows: Figure 1As shown, the size is designed according to the volume of the specific model sphere, the surface area of ​​the sphere and its working height. In this embodiment, the airbag opening 13 is hexagonal, with both ends being 90°, and the center line of the two ends being the symmetry axis.

[0023] The tear width transition ring 8 and the transition ring lining 9 are consistent with the hexagonal shape of the opening on the airbag, and the two ends along the opening direction of the tear width cover cloth 10 are both 90 degrees. The tear width cover cloth 10, the tear width transition ring 8 and the transition ring lining 9 are all connected to the airbag body by heat sealing. In this embodiment, the heat-sealed connection width of the tear width cover cloth 10 and the tear width transition ring 8 is (30-50) mm, and the peeling load of the tear width cover cloth 10 is in the range of (30-80) kg. If the peeling load is too small, the tear width cover cloth 10 is easily opened by mistake during production and use. If the peeling load is too large, the airbag will be torn open when the tear width cover cloth 10 is opened.

[0024] The tear width cover cloth 10 is made of airbag material with a Tedlar film weather-resistant layer. The tear width transition ring 8 and the transition ring lining cloth 9 are formed by heat-sealing two layers of heat-sealing materials. When the tear width transition ring 8 is cut, the left and right sides at the 90° angles at the head and tail ends are along the fiber direction of the balloon material, that is, the fiber direction of the tear width transition ring 8 is at a 45° angle to the tear width opening direction (the symmetry axis of the airbag opening 13). In this way, the tear width transition ring 8 connected to the airbag is continuous in the material fibers at the head and tail ends of the tear width opening path, ensuring that the airbag body is not easy to tear and does not produce uncontrollable tearing damage. The fiber direction of the tear width lining cloth 9 is consistent with the tear width opening direction (the transition ring lining cloth 9 is at a 0° angle to the symmetry axis of the airbag opening 13), which is used to ensure that after the tear width is accidentally opened, the left and right edges of the transition ring in the tear width opening direction will not be seriously damaged and will not affect the secondary heat sealing.

[0025] The front end of the tearing width cover cloth 10 is reinforced with a circular lining cloth 1, and is connected to one end of the tearing width rope 7 through a canvas buckle 2 at the center of the circle. The tearing width rope 7 has a tensile load of not less than 2000kg. The tearing width rope 7 can also be a steel wire rope, which is convenient for winding around the rotating shaft of the electric mechanism. The other end of the tearing width rope 7 is connected to the electric mechanism or placed on the anchoring vehicle.

[0026] In order to prevent the tearing width cover cloth 10 from being opened by mistake, a safety lining cloth is also designed opposite to the tearing width cover cloth 10, and the end is reinforced by a circular lining cloth 6, and a canvas buckle 2 is installed at the center of the circle. The safety lining cloth is connected to the tearing width cover cloth 10 by passing the canvas buckle 2 through the safety rope 5, and the tensile load of the safety rope 5 is not less than 50kg.

[0027] In order to facilitate the bundling of the tear width pull rope 7 and the safety rope 5, the tear width cover cloth 10 extends outward to a certain extent at the head end. The parts outside the heat-sealed area 11 are close to the airbag surface for a long time, which may harbor dirt and grime and have a certain adverse effect on the life. In this part, gluing is used to bond the tear width cover cloth 10 to the airbag surface. Because the fibers on the left and right oblique edges of the head end of the tear width cover cloth 10 are discontinuous, the adhesive used in the gluing area should not use a curing agent as much as possible to prevent the tear width cover cloth from being completely peeled off during the opening process. When a curing agent is used in the gluing area, a narrow heat-sealed strip is heat-sealed inside the left and right oblique edges of the head end of the tear width cover cloth, which can also prevent the tear width cover cloth 10 from being completely peeled off during the opening process.

[0028] Working principle:

[0029] When the tethered balloon escapes, the tear width rope 7 is pulled manually or electrically, and the load of the tear width rope 7 is first transferred to the safety rope 5. After the safety rope 5 breaks, the load is transferred to the tear width cover cloth 10, and the tear width cover cloth 10 and the tear width transition ring 8 are completely peeled off to expose the airbag opening. The helium inside the airbag can be released through the opening, and emergency helium release operation can be implemented to avoid the airbag from bursting due to rapid pressure increase and emergency landing after the burst, thereby achieving controllable helium release to protect the balloon body and equipment safety.

[0030] The protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the scope of the present invention. If these changes and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these changes and modifications.

Claims

1. An emergency helium release device for an aerostat, characterized in that: The invention comprises a transition ring lining cloth (9), wherein the transition ring lining cloth (9) is connected to the inner surface of the airbag, a tear width transition ring (8) is connected to the transition ring lining cloth (9), the tear width transition ring (8) and the transition ring lining cloth (9) are both arranged around the airbag opening (13), and a tear width cover cloth (10) is connected to the tear width transition ring (8) to cover the airbag opening (13).

2. An aerostat emergency helium release device as claimed in claim 1, characterized in that: The tear width transition ring (8) and the transition ring lining cloth (9) are both in the shape of a ring with uniform width, and the shape of the inner hole is the same as that of the airbag opening (13).

3. The aerostat emergency helium release device according to claim 1, characterized in that: The ferry ring lining cloth (9) is connected to the inner surface of the airbag and the tear width transition ring (8), and the tear width transition ring (8) is connected to the tear width cover cloth (10) by heat sealing.

4. The aerostat emergency helium release device according to claim 1, characterized in that: It also includes a safety lining cloth (4) bonded to the surface of the airbag. The safety lining cloth (4) and the head end of the tear width cover cloth (10) are connected by a safety rope (5), and the tear width pull rope (7) is connected to the safety rope (5).

5. The aerostat emergency helium release device according to claim 2, characterized in that: The airbag opening (13) is hexagonal, with the front and rear ends being 90 degrees apart, and the center line connecting the front and rear ends being the symmetry axis.

6. The aerostat emergency helium release device according to claim 2, characterized in that: The width of the heat-sealed connection between the tear width cover cloth (10) and the tear width transition ring (8) is 30 to 50 mm.

7. The aerostat emergency helium release device according to claim 5, characterized in that: The tear width transition ring (8) and the transition ring lining cloth (9) are both made of bladder material.

8. An aerostat emergency helium release device as claimed in claim 7, characterized in that: The 90° edges formed by the leading and trailing ends of the tear width transition ring are all along the fiber direction of the capsule material.

9. The aerostat emergency helium release device according to claim 7, characterized in that: The fiber direction of the transition ring lining cloth (9) is consistent with the symmetry axis direction of the airbag opening (13).

10. An aerostat emergency helium release device as claimed in claim 4, characterized in that: The front end of the tear width cover cloth (10) extends outward for a certain length, and the extended section is bonded to the surface of the airbag. The adhesive used in the bonding area does not use a curing agent or the adhesive used in the bonding area uses a curing agent, and a narrow strip-shaped heat-sealed strip is heat-sealed inside the edge of the extended section of the tear width cover cloth (10).

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