Overpressure balloon deflation self-destruction device and self-destruction method thereof

Abstract

The present application relates to a kind of overpressure balloon deflation self-destruction device and its self-destruction method, belong to the technical field of overpressure balloon deflation self-destruction equipment.It includes the four-way shell with overpressure balloon handle, the gas outlet of overpressure balloon handle is connected with the upper passage of four-way shell;Sealing hose is arranged on the left passage of four-way shell, self-destruction ball with part of gas is arranged in sealing hose, and self-destruction ball expands with the increase of overpressure balloon body flight height;Pressure relief valve is arranged on the right passage of four-way shell, and the bottom of four-way shell is hung with electric control device by first hanging rope, and first hanging rope is connected with electric heating wire inside electric control device;Electric control device is also connected with one end of second hanging rope, and the other end of second hanging rope is connected with pressure relief valve.The present application ensures that overpressure balloon is automatically deflated before reaching preset height to prevent overpressure balloon from breaking ahead of schedule, and self-rescue at preset self-destruction height, assembly is simple, safe and reliable, convenient to operate, suitable for mass production and popularization.

Description

Technical Field

[0001] This invention relates to the technical field of self-destruction devices for deflated overpressure balloons, and in particular to a self-destruction device and method for deflated overpressure balloons. Background Technology

[0002] Overpressure balloons have a relatively stable oscillation period during ascent, and their shape and volume remain basically unchanged. Their wind measurement performance is independent of the ascent altitude. Currently, they are mainly used for high-precision high-altitude wind field measurement. They can also be used to obtain meteorological elements such as atmospheric temperature, humidity, pressure, and wind field within a certain altitude range in real time. They are the most important data source for meteorological scientific research and support operations. They also provide more accurate measured data of aerial meteorological elements for high-altitude wind correction of space launch trajectories, atmospheric refraction correction of telemetry and control radio waves, error separation, meteorological (numerical) forecasting, and meteorological scientific research.

[0003] Overpressure balloons are non-inflating balloons whose shape and volume remain essentially unchanged during ascent. As altitude increases, atmospheric pressure continuously decreases, and the pressure difference between the inside and outside of the balloon continuously increases. Once a certain pressure difference is reached, the balloon ruptures and cannot fly to the predetermined altitude. Therefore, it is necessary to control the pressure difference between the inside and outside of the balloon to prevent premature rupture. At the same time, in order to prevent the balloon from drifting horizontally at a certain altitude due to the balance between the balloon's buoyancy and the weight of the balloon and its load, which may affect airspace safety, a self-destruct mechanism needs to be designed to allow the balloon to descend to the ground.

[0004] Currently, the most mature method for deflating overpressure balloons is natural deflating. This involves opening a vent at the bottom of the self-destruct device installed at the balloon's handle, allowing for natural deflating during launch due to the pressure difference between the inside and outside. This method requires extremely precise vent dimensions; any error can prevent the balloon from reaching the intended altitude, resulting in a low success rate and hindering large-scale deployment. Meanwhile, the currently used self-destruct method involves pyrotechnic detonation. A pyrotechnic device is installed in the self-destruct device at the balloon's handle, detonating upon reaching the predetermined altitude to deflate and destroy the balloon. However, due to strict regulations on pyrotechnics in my country, with extremely stringent procedures and formalities for purchase, transportation, and use, large-scale use is impossible. Furthermore, most overpressure balloons are filled with hydrogen, which can easily lead to safety accidents if handled improperly.

[0005] To address the aforementioned problems, it is urgent to develop a self-destruct device and method for deflation of overpressure balloons. Summary of the Invention

[0006] In response to the shortcomings of the existing production technology, the applicant provides an overpressure balloon deflation self-destruction device and its self-destruction method, thereby ensuring the normal ascent of the overpressure balloon while adding a dual insurance mechanism of physical self-destruction and electrical self-destruction, ensuring that the overpressure balloon self-destructs at a preset altitude and time, and is suitable for mass production and social promotion.

[0007] The technical solution adopted in this invention is as follows: an overpressure balloon deflation self-destruction device, comprising a four-way shell connected to an overpressure balloon handle at the bottom of the overpressure balloon body, wherein the air outlet of the overpressure balloon handle is connected to the upper passage of the four-way shell; a sealing hose is provided on the left passage of the four-way shell, and a self-destructing ball pre-sealed with some gas is provided inside the sealing hose, the self-destructing ball expanding as the flight altitude of the overpressure balloon body increases; a pressure relief valve is provided on the right passage of the four-way shell; an electrical control device is suspended at the bottom of the four-way shell via a first hanging rope, the first hanging rope being connected to a heating wire inside the electrical control device; the electrical control device is also connected to one end of a second hanging rope, and the other end of the second hanging rope is connected to the pressure relief valve.

[0008] As a further improvement to the above technical solution:

[0009] Preferably, the lower passage of the four-way shell is connected to the inflation nozzle, which is used to fill the overpressure balloon body with gas. The inflation nozzle has an integrated check valve to prevent gas leakage from the balloon.

[0010] Preferably, an electric control device fixing ring is provided on both sides of the inflation nozzle, and the first hanging rope passes through the electric control device fixing ring and is connected to the heating wire inside the electric control device.

[0011] Preferably, the pressure relief valve has the following structure: it includes a silicone sheet connected to a torsion spring, the torsion spring provides a pre-pressure to the silicone sheet, and the pre-pressure pushes the silicone sheet to seal the right passage; as the pressure difference between the inside and outside of the overpressure balloon increases during its ascent, the pressure relief valve opens to release pressure after overcoming the elastic force of the torsion spring. The greater the pressure difference, the greater the valve opening angle. After the pressure difference between the inside and outside of the overpressure balloon is balanced, the pressure relief valve closes.

[0012] Preferably, a through hole is provided at the top of the electronic control device, and the second hanging rope passes through the through hole at the top of the electronic control device and connects to the silicone sheet of the pressure relief valve.

[0013] Preferably, the length of the second hanging rope is greater than the distance between the electronic control device and the pressure relief valve.

[0014] A method for self-destruction of an overpressure balloon by deflation includes the following steps:

[0015] Step 1: Given the ground pressure of the overpressure balloon at the launch point, the corresponding air pressure at the launch altitude, and the volume of the self-destructing balloon that bursts through the sealed hose, the maximum inflation volume inside the self-destructing balloon at ground level can be calculated using the gas expansion formula.

[0016] Step 2: Based on the inflation volume of the self-destructing ball calculated in Step 1, inflate the self-destructing ball using an inflation device;

[0017] Step 3: While on the ground, configure the self-destruct height and self-destruct time parameters of the electronic control device through the configuration software;

[0018] Step 4: After completing the configuration in Step 3, connect the upper passage of the four-way housing to the overpressure balloon handle.

[0019] Step 5: Inflate the overpressure balloon and release it after inflation;

[0020] Step Six: The overpressure balloon continues to rise, and the self-destructing balloon expands continuously during flight. The overpressure balloon automatically releases air through the pressure relief valve based on the pressure difference between the inside and outside atmosphere.

[0021] Step 7: When the overpressure balloon reaches its self-destruct altitude, the overpressure balloon will either physically or electrically self-destruct.

[0022] In step six, the continuous ascent of the overpressure balloon body occurs when the atmospheric pressure difference inside and outside the overpressure balloon exceeds the preset value of the pressure relief valve. The pressure relief valve opens to release pressure, and the greater the atmospheric pressure difference inside and outside the overpressure balloon, the greater the valve opening angle. When the pressure difference inside and outside the overpressure balloon is balanced, the valve closes. During the automatic pressure release process of the pressure relief valve, the overpressure balloon body continues to rise.

[0023] Preferably, the physical self-destruction process in step seven is as follows:

[0024] The sealing hose uses heat sealing technology to press multiple layers of film together to form the hose body;

[0025] The membrane material used for the self-destructing ball should have a strength greater than that of the sealing hose;

[0026] During the ascent of the overpressure balloon, the external air pressure decreases, causing the self-destruct balloon to expand. When the diameter of the self-destruct balloon exceeds the diameter of the sealing hose, the pressure on the sealing hose increases. When the lateral pressure exerted on the sealing hose due to the expansion of the self-destruct balloon exceeds the tensile strength that the joint of the sealing hose can withstand, the joint of the sealing hose is ruptured, and the gas inside the overpressure balloon leaks out through the left passage. The balloon gradually descends to the ground, completing its self-destruction.

[0027] Preferably, the electronically controlled self-destruct process in step seven is as follows:

[0028] When the overpressure balloon reaches the set self-destruct height, the electric control device heats the internal heating wire, which melts the first hanging rope; at this time, the second hanging rope connected to the electric control device changes from a slack state to a taut state.

[0029] Since the other end of the second rope is connected to the pressure relief valve, the second rope transmits the weight of the electronic control device itself as an external force to the pressure relief valve. The pressure relief valve is pulled by the second rope and fully opened. The gas inside the overpressure balloon leaks out through the right passage, and the overpressure balloon gradually falls to the ground, completing its self-destruction.

[0030] The beneficial effects of this invention are as follows:

[0031] This invention features a compact structure and convenient assembly. A pressure relief valve is installed in the right passage of the four-way shell connected to the overpressure balloon's handle. This valve uses a torsion spring to provide a pre-pressure to a silicone sheet, which seals the right passage. As the overpressure balloon ascends, the pressure difference between the inside and outside atmosphere increases. Overcoming the spring force, the pressure relief valve opens to release pressure. The greater the pressure difference, the larger the valve opening angle. Once the pressure difference between the inside and outside of the overpressure balloon is balanced, the pressure relief valve closes. This automatic pressure relief design automatically controls the pressure difference between the overpressure balloon and the outside atmosphere within a certain range, ensuring stable ascent, preventing premature rupture, and greatly improving the flight success rate. Furthermore, this invention employs a redundant self-destruct design with both physical and electronic self-destruct mechanisms, significantly improving the success rate of overpressure balloon self-destruction, reducing the impact of the overpressure balloon's horizontal drift on airspace safety, and eliminating the safety hazards to personnel caused by conventional self-destruct methods. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 This is a schematic diagram of the self-destruct process of the present invention.

[0034] The components include: 1. Overpressure balloon body; 2. Overpressure balloon handle; 3. Four-way shell; 4. Sealing hose; 5. Self-destructing balloon; 6. Pressure relief valve; 7. Inflation nozzle; 8. Electrical control device fixing ring; 9. Electrical control device; 10. Heating wire; 11. First hanging rope; 12. Second hanging rope;

[0035] 301. Upper passage; 302. Left passage; 303. Right passage; 304. Lower passage. Detailed Implementation

[0036] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to 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 of the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] like Figures 1-2 As shown, the overpressure balloon deflation self-destruct device of this embodiment includes a four-way housing 3 connected to the overpressure balloon handle 2 at the bottom of the overpressure balloon body 1. The air outlet of the overpressure balloon handle 2 is connected to the upper passage 301 of the four-way housing 3. A sealing hose 4 is provided on the left passage 302 of the four-way housing 3. A self-destructing ball 5 pre-sealed with some gas is provided in the sealing hose 4. The self-destructing ball 5 expands as the flight altitude of the overpressure balloon body 1 increases. A pressure relief valve 6 is provided on the right passage 303 of the four-way housing 3. An electric control device 9 is hung at the bottom of the four-way housing 3 via a first hanging rope 11. The first hanging rope 11 is connected to the heating wire 10 inside the electric control device 9. The electric control device 9 is also connected to one end of a second hanging rope 12. The other end of the second hanging rope 12 is connected to the pressure relief valve 6.

[0042] Specifically, in this embodiment, the sealing hose 4 uses heat sealing technology to press multiple layers of film together to form the hose body; the self-destructing ball 5 uses a membrane material with greater strength than the sealing hose 4.

[0043] In this embodiment, the lower passage 304 of the four-way housing 3 is connected to the inflation nozzle 7. The inflation nozzle 7 is used to fill the overpressure balloon body 1 with gas. The inflation nozzle 7 has an integrated check valve to prevent gas leakage from the balloon.

[0044] In this embodiment, an electric control device fixing ring 8 is provided on both sides of the air inlet 7, and the first hanging rope 11 passes through the electric control device fixing ring 8 and is connected to the heating wire 10 inside the electric control device 9.

[0045] In this embodiment, the pressure relief valve 6 has the following structure: it includes a silicone sheet connected to a torsion spring. The torsion spring provides a pre-pressure to the silicone sheet, and the pre-pressure pushes the silicone sheet to seal the right passage 303. As the pressure difference between the inside and outside of the overpressure balloon body 1 increases during its ascent, the pressure relief valve 6 opens to release pressure after overcoming the elastic force of the torsion spring. The greater the pressure difference, the greater the valve opening angle. After the pressure difference between the inside and outside of the overpressure balloon is balanced, the pressure relief valve 6 closes.

[0046] In this embodiment, a through hole is provided on the top of the electronic control device 9, and the second hanging rope 12 passes through the through hole on the top of the electronic control device 9 and connects to the silicone sheet of the pressure relief valve 6.

[0047] In this embodiment, the length of the second hanging rope 12 is greater than the distance between the electronic control device 9 and the pressure relief valve 6.

[0048] The self-destruction method for an overpressure balloon in this embodiment includes the following steps:

[0049] Step 1: Given the ground pressure of the overpressure balloon body 1 at the launch point, the corresponding air pressure at the launch altitude, and the volume of the self-destructing balloon 5 rupturing the sealing hose 4, the maximum inflation volume inside the self-destructing balloon 5 at ground level can be calculated using the gas expansion formula.

[0050] Step 2: Based on the inflation volume of the self-destructing ball 5 calculated in Step 1, inflate the self-destructing ball 5 using an inflation device;

[0051] Step 3: While on the ground, configure the self-destruct height and self-destruct time parameters of the electronic control device 9 using the configuration software;

[0052] Step 4: After completing the configuration in Step 3, connect the upper passage 301 of the four-way housing 3 to the overpressure balloon handle 2.

[0053] Step 5: Inflate the overpressure balloon body 1, and release it after inflation;

[0054] Step Six: The overpressure balloon body 1 continues to rise, and the self-destructing balloon 5 expands continuously during flight. The overpressure balloon body 1 automatically releases air through the pressure relief valve 6 according to the pressure difference between the inside and outside atmosphere.

[0055] Step 7: When the overpressure balloon body 1 reaches the self-destruct altitude, the overpressure balloon body 1 will perform physical self-destruction or electronic self-destruction.

[0056] In step six, the continuous ascent of the overpressure balloon body 1 occurs when the atmospheric pressure difference inside and outside the overpressure balloon exceeds the preset value of the pressure relief valve 6. The pressure relief valve 6 opens to release pressure, and the greater the atmospheric pressure difference inside and outside the overpressure balloon, the greater the valve opening angle. When the pressure difference inside and outside the overpressure balloon is balanced, the valve closes. During the automatic venting process of the pressure relief valve 6, the overpressure balloon body 1 continues to rise.

[0057] In this embodiment, specifically, the physical self-destruction process in step seven is as follows:

[0058] The sealing hose 4 uses heat sealing technology to press multiple layers of film together to form the hose body;

[0059] The membrane material used for the self-destructing ball 5 should have a strength greater than that of the sealing hose 4;

[0060] During the ascent of the overpressure balloon body 1, the external air pressure decreases, and the self-destructing balloon 5 expands. When the diameter of the self-destructing balloon 5 exceeds the diameter of the sealing hose 4, the pressure on the sealing hose 4 increases. When the lateral pressure exerted on the sealing hose 4 due to the expansion of the self-destructing balloon 5 exceeds the tensile strength that the joint of the sealing hose 4 can withstand, the joint of the sealing hose 4 is ruptured, and the gas inside the overpressure balloon body 1 leaks out from the left passage 302. The balloon gradually descends to the ground, completing its self-destruction.

[0061] In this embodiment, specifically, the electronically controlled self-destruct process in step seven is as follows:

[0062] When the overpressure balloon body 1 reaches the set self-destruct height, the electric heating wire 10 inside is energized and heated by the electric control device 9, and the electric heating wire 10 melts the first hanging rope 11; at this time, the second hanging rope 12 connected to the electric control device 9 changes from a slack state to a taut state.

[0063] Since the other end of the second hanging rope 12 is connected to the pressure relief valve 6, the second hanging rope 12 transmits the weight of the electronic control device 9 as an external force to the pressure relief valve 6. The pressure relief valve 6 is pulled by the second hanging rope 12 and fully opened. The gas filled inside the overpressure balloon body 1 leaks from the right passage 303, and the overpressure balloon body 1 gradually falls to the ground, completing its self-destruction.

[0064] This invention ensures the normal ascent of the overpressure balloon through the automatic venting design of the pressure relief valve 6. At the same time, it adds a double insurance mechanism of physical self-destruction and electrical self-destruction, ensuring the safety of the operator and ensuring that the overpressure balloon self-destructs at a preset height and time. The entire device is simple in design, easy to operate, and can be operated by a single person, making it suitable for mass production and widespread use.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A self-destruct device for deflation of an overpressure balloon, characterized in that, include: A four-way housing (3) is connected to the overpressure balloon handle (2) at the bottom of the overpressure balloon body (1), and the air outlet of the overpressure balloon handle (2) is connected to the upper passage (301) of the four-way housing (3); A sealing hose (4) is provided on the left passage (302) of the four-way shell (3), and a self-destructing ball (5) pre-sealed with some gas is provided in the sealing hose (4). The self-destructing ball (5) expands as the flight altitude of the overpressure balloon body (1) increases. A pressure relief valve (6) is provided on the right passage (303) of the four-way housing (3), and an electric control device (9) is hung on the bottom of the four-way housing (3) via a first hanging rope (11). The first hanging rope (11) is connected to the heating wire (10) inside the electric control device (9). The electronic control device (9) is also connected to one end of the second hanging rope (12), and the other end of the second hanging rope (12) is connected to the pressure relief valve (6).

2. The overpressure balloon deflation self-destruct device as described in claim 1, characterized in that: The lower passage (304) of the four-way housing (3) is connected to the inflation nozzle (7). The inflation nozzle (7) is used to fill the overpressure balloon body (1) with gas. The inflation nozzle (7) has an integrated check valve to prevent gas leakage from the balloon.

3. The overpressure balloon deflation self-destruct device as described in claim 2, characterized in that: Electric control device fixing rings (8) are provided on both sides of the inflation nozzle (7). The first hanging rope (11) passes through the electric control device fixing rings (8) and connects to the heating wire (10) inside the electric control device (9).

4. The overpressure balloon deflation self-destruct device as described in claim 1, characterized in that: The structure of the pressure relief valve (6) is as follows: it includes a silicone sheet, which is connected to a torsion spring. The torsion spring provides a pre-pressure to the silicone sheet, and the pre-pressure pushes the silicone sheet to seal the right passage (303). As the overpressure balloon body (1) ascends, the atmospheric pressure difference between the inside and outside increases. After overcoming the elastic force of the torsion spring, the pressure relief valve (6) opens to release pressure. The greater the pressure difference, the greater the valve opening angle. After the pressure difference between the inside and outside of the overpressure balloon is balanced, the pressure relief valve (6) closes.

5. The overpressure balloon deflation self-destruct device as described in claim 4, characterized in that: A through hole is provided on the top of the electronic control device (9), and the second hanging rope (12) passes through the through hole on the top of the electronic control device (9) and connects to the silicone sheet of the pressure relief valve (6).

6. The overpressure balloon deflation self-destruct device as described in claim 1, characterized in that: The length of the second hanging rope (12) is greater than the distance between the electronic control device (9) and the pressure relief valve (6).

7. A method for self-destruction of an overpressure balloon by deflation, characterized in that: The overpressure balloon body (1) is deflated and destroyed by the overpressure balloon deflation self-destruction device according to any one of claims 1 to 6; Includes the following steps: Step 1: Given the ground pressure of the overpressure balloon body (1) at the launch point, the corresponding air pressure at the launch altitude, and the volume of the self-destructing balloon (5) that breaks through the sealing hose (4), the maximum inflation volume of the self-destructing balloon (5) at the ground can be calculated according to the gas expansion formula. Step 2: Based on the inflation volume of the self-destructing ball (5) calculated in Step 1, inflate the self-destructing ball (5) using an inflation device; Step 3: When on the ground, configure the self-destruct height and self-destruct time parameters of the electronic control device (9) in advance through the configuration software; Step 4: After the configuration in Step 3 is completed, install and connect the upper passage (301) of the four-way housing (3) to the overpressure balloon handle (2); Step 5: Inflate the overpressure balloon body (1) and release it after inflation; Step 6: The overpressure balloon body (1) continues to rise, and the self-destructing balloon (5) continues to expand during the flight. The overpressure balloon body (1) automatically releases air through the pressure relief valve (6) according to the pressure difference between the inside and outside atmosphere. Step 7: When the overpressure balloon body (1) reaches the self-destruct altitude, the overpressure balloon body (1) will perform physical self-destruction or electronic self-destruction.

8. The method for self-destruction of an overpressure balloon as described in claim 7, characterized in that: In step six, the continuous rising process of the overpressure balloon body (1) is as follows: when the atmospheric pressure difference inside and outside the overpressure balloon is greater than the preset value of the pressure relief valve (6), the pressure relief valve (6) opens to release pressure. The greater the atmospheric pressure difference inside and outside the overpressure balloon, the greater the valve opening angle. When the pressure difference inside and outside the overpressure balloon is balanced, the valve closes. During the automatic air release process of the pressure relief valve (6), the overpressure balloon body (1) continues to rise.

9. The method for self-destruction of an overpressure balloon as described in claim 7, characterized in that: The physical self-destruction process in step seven is as follows: The sealing hose (4) uses heat sealing technology to press multiple layers of film together to form the hose body; The membrane material used in the self-destructing ball (5) has a greater strength than that of the sealing hose (4); During the ascent of the overpressure balloon body (1), the external air pressure decreases and the self-destruct ball (5) expands. When the expansion diameter of the self-destruct ball (5) exceeds the diameter of the sealing hose (4), the pressure on the sealing hose (4) increases. When the pressure applied laterally to the sealing hose (4) due to the expansion of the self-destruct ball (5) exceeds the tensile strength that the joint of the sealing hose (4) can withstand, the joint of the sealing hose (4) is ruptured, and the gas inside the overpressure balloon body (1) leaks from the left passage (302). The balloon gradually descends to the ground and completes its self-destruction.

10. The method for self-destruction of an overpressure balloon as described in claim 7, characterized in that: The electronically controlled self-destruct process in step seven is as follows: When the overpressure balloon body (1) reaches the set self-destruct height, the electric heating wire (10) inside is heated by the electric control device (9), and the electric heating wire (10) melts the first hanging rope (11); at this time, the second hanging rope (12) connected to the electric control device (9) changes from a slack state to a taut state. Since the other end of the second rope (12) is connected to the pressure relief valve (6), the second rope (12) transmits the weight of the electronic control device (9) as an external force to the pressure relief valve (6). The pressure relief valve (6) is pulled by the second rope (12) and fully opened. The gas inside the overpressure balloon body (1) leaks from the right passage (303). The overpressure balloon body (1) gradually falls to the ground and completes its self-destruction.

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