Near space mooring floating system and issuing method

Abstract

The invention relates to the technical field of aerostats, and provides a near space mooring floating system and an issuing method. The near space mooring floating system comprises an aerostat, a zero-pressure balloon, a pod and a roller, the aerostat, the zero-pressure balloon and the nacelle are sequentially connected, the nacelle is connected with the roller through a mooring rope, and the aerostat can drive the roller to ascend together when being launched. According to the near space mooring floating system, the mooring rope is connected with the roller, the mooring rope is not connected with the ground in the ascending process of the aerostat, and the aerostat cannot form a windsail, so that the aerostat capsule or the mooring rope is prevented from being damaged, the aerostat can be safely launched to the near space, and the safety of the aerostat is improved. And technical support is provided for development and utilization of the near space.

Description

Technical Field

[0001] The present invention relates to the technical field of aerostats, and in particular to a near-space moored aerostat system and a launching method. Background Art

[0002] Near-space is a space layer at an altitude of 20 to 100 kilometers above the Earth. Its altitude is higher than the flight altitude of traditional aircraft such as airplanes, but much lower than the altitude of satellite orbits. It is a transition zone between aviation and aerospace. Due to its thin atmosphere, this air layer is neither suitable for traditional aircraft flight nor can it be used as a satellite orbit, so the space utilization rate is low.

[0003] In recent years, many scholars have devoted themselves to the development and utilization of near-space. The near-space aircraft developed mainly include high-altitude balloons, stratospheric airships and stratospheric solar-powered drones.

[0004] The traditional method of launching a tethered aerostat is: the lower end of the tethered aerostat is connected to a cable, the other end of the cable is wound on a ground winch, the cable is released by the ground winch, and the tethered aerostat drags the cable up under the action of buoyancy until it reaches the target height. If this method is used to launch a high-altitude balloon, there is a strong wind area at an altitude of 8-12 kilometers during the ascent of the high-altitude balloon, and the wind speed can reach tens to hundreds of meters per second. The wind speed there is much greater than the wind speed at the working altitude of the tethered aerostat. When the high-altitude balloon reaches this altitude under the traction of the mooring cable, since the high-altitude balloon is not fully inflated at this altitude and is in an unformed state, the balloon envelope forms a wind hood, which can easily damage the balloon envelope or break the mooring cable, causing the high-altitude balloon to be unable to be launched normally. Summary of the invention

[0005] The present invention provides a near-space tethered floating system and a launching method, which are used to solve the defect that near-space tethered balloons in the prior art cannot be launched normally.

[0006] The present invention provides a near-space tethered floating system, comprising: an aerostat, a zero-pressure balloon, a pod and a drum; the aerostat, the zero-pressure balloon and the pod are connected in sequence, the pod is connected to the drum through a tethered rope, and the aerostat can drive the drum to rise together when released.

[0007] According to a near-space moored floating system provided by the present invention, the airship includes a first airbag and a second airbag, the first airbag is connected to the second airbag, the second airbag is connected to the pod, the first airbag is filled with air, the second airbag is filled with helium, the first airbag is connected to a first air pipe, and the first air pipe is provided with a first control component; a pressure sensor is provided in the first airbag or the second airbag, the pressure sensor is used to detect the pressure of the gas in the airship, the pod is provided with a controller, and the controller is used to control the pressure detected by the pressure sensor according to the pressure difference between the pressure sensor and the air pressure of the airship. The controller is used to control the opening of the first control component to realize exhaust or intake, so as to adjust the pressure of the aerostat; the zero-pressure balloon is connected to the second airbag and the pod respectively, and the zero-pressure balloon is filled with helium; the second airbag is connected to a second air pipe, on which a second control component is arranged, and the zero-pressure balloon is connected to the second air pipe through a third air pipe; the controller is also used to control the opening of the second control component to discharge the helium in the zero-pressure balloon into the second airbag when the difference between the pressure in the aerostat and the atmospheric pressure is zero.

[0008] According to a near-space tethered floating system provided by the present invention, the drum comprises: a drum body, a pair of baffles, a magnetic powder clutch and a rotating arm; the pair of baffles are arranged on both sides of the drum body, the magnetic powder clutch is arranged in the drum body, the output shaft of the magnetic powder clutch is passed through the pair of baffles, and is rotatably connected to the rotating arm; when the magnetic powder clutch rotates, it can drive the drum body to rotate, the first end of the tethering rope is wound around the drum body, the second end of the tethering rope passes through the rotating arm and is connected to the pod, and the rotation speed of the magnetic powder clutch is adjustable.

[0009] According to a near-space moored floating system provided by the present invention, a locator is further provided in the pod, and the locator is used to locate the position of the roller.

[0010] A near-space tethered floating system provided according to the present invention also includes a plurality of connecting parts, each of which is provided with a cutter, and the cutter is used to cut the connecting part; the pod is connected to the roller through the connecting part, the zero-pressure balloon is connected to the second airbag through the connecting part, and the zero-pressure balloon is connected to the pod through the connecting part.

[0011] The present invention also provides a method for releasing the near-space tethered floating system as described above, comprising: filling a certain amount of air into a first airbag, and filling a target mass of helium into a second airbag and a zero-pressure balloon; releasing the airship and the zero-pressure balloon; after the first airbag and the second airbag are fully inflated, obtaining in real time the difference between the gas pressure in the airship and the atmospheric pressure, and when the difference exceeds a first preset value, controlling a first control component to open and exhaust the air in the first airbag until the difference is within a threshold range, controlling the first control component to close, and continuously adjusting the pressure difference between the inside and outside of the airship during the ascent of the airship and the zero-pressure balloon; after the zero-pressure balloon is fully inflated, the airship and the zero-pressure balloon are in a floating state.

[0012] A releasing method provided according to the present invention also includes: when the airship and the zero-pressure balloon are in a floating state, controlling the cutter to cut off the connection between the drum and the pod to make the drum fall; when the drum is close to the sea level, reducing the descent speed of the drum; based on the position information of the drum sent by the locator, finding the drum and landing the drum on the ship.

[0013] A releasing method provided by the present invention also includes: controlling the descent of the airship by retracting the tethering rope; during the descent of the airship, the pressure difference between the inside and outside of the airship gradually decreases, and when the difference is equal to zero, controlling the second control component to open to discharge the helium in the zero-pressure balloon into the second airbag until the difference is greater than a second preset value; while the zero-pressure balloon is inflating the second airbag, continuously retracting the tethering rope until the airship descends to the target height.

[0014] A releasing method provided according to the present invention also includes: when the airship descends to the target height, controlling the cutter to cut off the connection between the second airbag and the zero-pressure balloon, and then cutting off the connection between the zero-pressure balloon and the pod.

[0015] According to a release method provided by the present invention, the release method also includes: when the airship is in an airborne state, when the difference is less than a third preset value, controlling the first control component to open to fill the first airbag with external air; when the difference is greater than the third preset value, controlling the first control component to open to discharge the gas in the first airbag; at the same time, by retracting and releasing the mooring rope, the airship is always located at the target height.

[0016] The near-space tethered floating system provided by the present invention connects the tethering rope to the drum. During the ascent of the aerostat, the tethering rope is not connected to the ground, and no wind hood is formed on the aerostat, thereby avoiding damage to the aerostat capsule or the tethering rope, allowing the aerostat to be safely released into the near-space, thereby providing technical support for the development and utilization of the near-space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or 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.

[0018] Figure 1 It is a structural schematic diagram of the near-space tethered floating system provided by the present invention.

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure of the drum shown in FIG.

[0020] Figure 3 This is one of the schematic diagrams of the release process of the near-space tethered floating system provided by the present invention.

[0021] Figure 4 This is the second schematic diagram of the release process of the near-space tethered floating system provided by the present invention.

[0022] Reference numerals: 1. Aerostat; 2. Zero-pressure balloon; 3. Mooring rope; 4. Gondola; 5. Drum; 6. Winch; 11. first airbag; 12. second airbag; 21. exhaust pipe; 51. drum body; 52. baffle; 53. rotating arm; 54. fixing seat; 55. output shaft; 71. first connecting member; 72. second connecting member; 73. third connecting member; 74. fourth connecting member; 111, first valve; 121, second valve; 122, second fan; 711, first cutter; 721, second cutter; 731, third cutter. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings 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.

[0024] Combine the following Figure 1-Figure 4 The near-space tethered floating system and the launching method of the present invention are described.

[0025] like Figure 1 As shown, in an embodiment of the present invention, a near-space moored floating system comprises: an aerostat 1, a zero-pressure balloon 2, a pod 4 and a drum 5. The aerostat 1, the zero-pressure balloon 2 and the pod 4 are connected in sequence, and the pod 4 is connected to the drum 5 through a mooring rope 3. When the aerostat 1 is released, the drum 5 rises with the aerostat 1. In the prior art, the pod 4 is connected to a winch 6 on the ground through a mooring rope 3. When the aerostat 1 rises to the rush wind area, the capsule of the aerostat 1 has not yet been fully expanded and formed, and the mooring rope 3 drags the aerostat 1 to form a wind hood, which can easily damage the capsule of the aerostat 1 or break the mooring rope 3; in this embodiment, the mooring rope 3 is not connected to the winch 6 on the ground. When the aerostat 1 rises to the rush wind area, although the capsule of the aerostat 1 has not yet been fully expanded and formed, since the mooring rope 3 is not connected to the ground winch 6, no wind hood will be formed, thereby avoiding the risk of damaging the capsule of the aerostat 1 or the mooring rope 3.

[0026] The near-space tethered floating system provided by the embodiment of the present invention connects the tethering rope to the drum. During the ascent of the airstat, the tethering rope is not connected to the ground, and no wind hood is formed on the airstat, thereby avoiding damage to the airstat capsule or the tethering rope, allowing the airstat to be safely released into the near-space, providing technical support for the development and utilization of the near-space.

[0027] like Figure 1 As shown, in an embodiment of the present invention, the airship 1 includes a first airbag 11 and a second airbag 12, the first airbag 11 is connected to the second airbag 12, and the second airbag 12 is connected to the pod 4. Among them, a small amount of air is filled in the first airbag 11, and a certain amount of helium is filled in the second airbag 12, and the air pressure in the first airbag 11 is substantially equal to the air pressure in the second airbag 12. The first airbag 11 is connected to a first air pipe, and a first control component is provided on the first air pipe, and the first control component is used to control the opening and closing of the first air pipe. In this embodiment, the first control component includes: a first valve 111 and a first fan. When the first control component is turned on, the first valve 111 and the first fan are turned on at the same time to discharge the air in the first airbag 11 or to suck the external air into the first airbag 11. In this embodiment, the fan can rotate forward or reverse to achieve air intake or exhaust.

[0028] Before the airship 1 is released, since the atmospheric density on the ground is more than ten times that of the atmospheric density in the adjacent space, the first airbag 11 and the second airbag 12 have not yet expanded to form when on the ground. When released, the internal air pressure of the first airbag 11 and the second airbag 12 is greater than the external atmospheric pressure during the ascent, and the first airbag 11 and the second airbag 12 gradually expand until they are fully inflated. A pressure sensor is provided in the first airbag 11 or the second airbag 12, and the pressure sensor is used to detect the pressure of the gas in the first airbag 11 or the second airbag 12 in real time. A controller is provided in the pod 4. After the first airbag 11 and the second airbag 12 are fully inflated, the pressure sensor sends the real-time detected pressure data to the controller, and the controller calculates the difference between the gas pressure in the airship 1 and the atmospheric pressure in real time. When the difference exceeds the first preset value, the controller controls the first control component to open, and the first airbag 11 exhausts air to the outside to reduce the internal air pressure. When the difference between the gas pressure and the atmospheric pressure is reduced to within the threshold range, the controller controls the first valve 111 and the first fan to stop running. The aerostat 1 continues to rise. During the rising process of the aerostat 1, the controller always controls the first valve 111 and the first fan to start or close according to the pressure difference, so that the pressure difference between the air pressure inside the aerostat 1 and the external atmospheric pressure is always within the threshold range.

[0029] The upper part of the zero-pressure balloon 2 is connected to the second airbag 12, and the lower part of the zero-pressure balloon 2 is connected to the pod 4. The zero-pressure balloon 2 is filled with helium. Before the aerostat 1 is released, the zero-pressure balloon 2 is filled with a target mass of helium. At this time, the zero-pressure balloon 2 is not inflated. When the aerostat 1 is released, after the first airbag 11 and the second airbag 12 are fully inflated, the aerostat 1 continues to rise, the atmospheric density and atmospheric pressure are further reduced, and the zero-pressure balloon 2 is fully inflated.

[0030] In the embodiment of the present invention, the zero-pressure balloon 2 is connected to an exhaust pipe 21. When the zero-pressure balloon 2 is fully inflated, its internal air pressure is equal to the external atmospheric pressure, and the internal and external pressure difference is zero, so it is a zero-pressure balloon. Its specific working principle is: during the ascent of the zero-pressure balloon 2, the internal air pressure is greater than the external atmospheric pressure, and the zero-pressure balloon 2 gradually expands. As the ascent height increases, the external atmospheric pressure gradually decreases. When the zero-pressure balloon 2 is fully inflated, the excess helium inside is discharged from the exhaust pipe 21, so that the internal air pressure of the zero-pressure balloon 2 is equal to the external atmospheric pressure, and the pressure difference between the two is zero.

[0031] After the zero-pressure balloon 2 is fully inflated, the aerostat 1 and the zero-pressure balloon 2 continue to rise until the total buoyancy and total weight of the near-space moored aerostat system are equal, and the aerostat 1 and the zero-pressure balloon 2 no longer move up and down and are in a floating state.

[0032] In this embodiment, a zero-pressure balloon 2 is connected to the lower part of the second airbag 12. The zero-pressure balloon 2 is filled with helium. Since the density of helium is less than that of air, it can provide buoyancy for the near-space tethered floating system, so that the airship 1 has sufficient net buoyancy to achieve ascent to the near-space.

[0033] like Figure 1 and Figure 2 As shown, in the embodiment of the present invention, in addition to being connected to the drum 5 through the mooring rope 3, the pod 4 is also connected to the drum 5 through the first connecting member 71. The first connecting member 71 is provided with a first cutter 711. When the aerostat 1 and the zero-pressure balloon 2 are in a floating state, the controller controls the first cutter 711 to cut off the first connecting member 71, so that the drum 5 falls to the ground.

[0034] Furthermore, the near-space tethered floating system further includes: a second connector 72, a third connector 73, a fourth connector 74, a second cutter 721 and a third cutter 731. The upper part of the zero-pressure balloon 2 is connected to the second airbag 12 through the second connector 72, the lower part of the zero-pressure balloon 2 is connected to the pod 4 through the third connector 73, and the second airbag 12 is connected to the pod 4 through the fourth connector 74. The second cutter 721 is arranged on the second connector 72 for cutting off the second connector 72, and the third cutter 731 is arranged on the third connector 73 for cutting off the third connector 73. Optionally, in an embodiment of the present invention, the first connector 71, the second connector 72, the third connector 73 and the fourth connector 74 can all be ropes to facilitate cutting by the cutter.

[0035] like Figure 3 As shown, after the first connecting member 71 is cut off, the drum 5 falls. In the embodiment of the present invention, a locator is provided in the pod 4, and the locator is used to obtain the position of the drum 5 and send the position information to the ground, and the ground operator can find the drum 5 according to the position information sent by the locator.

[0036] like Figure 2As shown, in the embodiment of the present invention, the drum 5 includes a drum body 51, a baffle 52, a magnetic powder clutch and a rotating arm 53. One end of the mooring rope 3 is wound around the drum body 51, and the other end is connected to the pod 4. Baffles 52 are provided on both sides of the drum body 51, and each baffle 52 is provided with a fixing seat 54. A magnetic powder clutch is provided in the drum body 51, and the output shaft 55 of the magnetic powder clutch penetrates the baffle 52 and the fixing seat 54 and is rotatably connected to the rotating arm 53. The rotating arm 53 is provided with a through hole, and the mooring rope 3 passes through the through hole and is connected to the pod 4. When the magnetic powder clutch rotates, it can drive the drum body 51 to rotate. By controlling the output torque of the output shaft 55 of the magnetic powder clutch, the rotation speed of the drum body 51 can be adjusted, and then the descending speed of the drum 5 can be adjusted. When the drum 5 is at a certain distance from the sea level, the torque of the output shaft 55 of the magnetic powder clutch is increased to reduce the descending speed of the drum 5. The operator finds the drum 5 according to the position information of the drum 5 sent by the locator, and lowers the drum 5 to the ship. The winch 6 is set on the ship, and the mooring rope 3 is connected to the winch 6. By retracting and releasing the mooring rope 3, the height of the airship 1 can be adjusted.

[0037] like Figure 1 As shown, the second air bag 12 is connected to a second air pipe, the second air pipe is provided with a second control component, and the zero-pressure balloon 2 is connected to the second air pipe through a third air pipe. Specifically, the second control component includes: a second valve 121 and a second fan 122. After the second valve 121 and the second fan 122 are opened, the helium in the zero-pressure balloon 2 can be discharged into the second air bag 12.

[0038] Specifically, after the mooring rope 3 is connected to the winch 6, when the rope is retracted, the height of the aerostat 1 decreases accordingly. As the height of the aerostat 1 gradually decreases, the atmospheric density and atmospheric pressure increase, and the pressure difference between the inside and outside of the aerostat 1 gradually decreases. When the pressure difference between the inside and outside of the aerostat 1 is equal to zero, the controller controls the second valve 121 and the second fan 122 to open, so as to discharge the helium in the zero-pressure balloon 2 into the second airbag 12, and the rope is continuously retracted until the height of the aerostat 1 is reduced to the target height. The pressure sensor detects the pressure of the gas in the aerostat 1 in real time. When the difference between the pressure of the gas and the external atmospheric pressure is greater than the second preset value, the second valve 121 and the second fan 122 are controlled to be closed.

[0039] like Figure 4 As shown, after the second valve 121 and the second fan 122 are closed, the controller controls the second cutter 721 to operate, cuts off the second connection member 72, and the zero-pressure balloon 2 drifts to the downwind direction under the action of the wind. The controller controls the third cutter 731 to operate, cuts off the third connection member 73, and the zero-pressure balloon 2 floats away under the action of the wind field.

[0040] In this embodiment, the height of the aerostat 1 can be adjusted by controlling the winch 6 to retract and release the rope, so that the aerostat 1 can be stationary at a target height in the adjacent space.

[0041] In this embodiment, the aerostat 1 is an overpressure aerostat, and there is always a certain pressure difference between the air pressure inside the aerostat 1 and the external atmospheric pressure, and the pressure difference is always within the threshold range. When the aerostat 1 descends to the target height and stays in the near space, the pressure difference is adjusted as follows: when the pressure difference is less than the third preset value, the first valve 111 and the first fan are controlled to open, and the external air is filled into the first airbag 11 to increase the air pressure in the first airbag 11, thereby increasing the pressure difference; when the pressure difference is greater than the third preset value, the first valve 111 and the first fan are controlled to open, and the air in the first airbag 11 is discharged to reduce the air pressure in the first airbag 11, thereby reducing the pressure difference.

[0042] Furthermore, in the present embodiment, when the air pressure inside the airship 1 is much greater than the external atmospheric pressure, the airship 1 expands rapidly, causing the first airbag 11 and the second airbag 12 to explode; and when the external atmospheric pressure is much greater than the air pressure inside the airship 1, the first airbag 11 and the second airbag 12 will shrink, thereby forming a wind hood under the action of the mooring rope 3. Based on this, during the release process of the airship 1, the air pressure inside the airship 1 should be adjusted in real time so that the pressure difference between the inside and outside of the airship 1 is within the threshold range, and the airship 1 is always in a fully inflated state.

[0043] It should be noted that: in the above-described embodiment, the first preset value, the second preset value and the third preset value can be flexibly set according to specific use conditions, and the three can be equal or different.

[0044] The embodiment of the present invention also provides a method for distributing a near-space tethered floating system, which specifically includes the following steps: Step 01: Fill a certain amount of air into the first airbag 11, and fill the second airbag 12 and the zero-pressure balloon 2 with a target mass of helium; Step 02: Release the airship 1 and the zero-pressure balloon 2; Step 03: After the first airbag 11 and the second airbag 12 are fully inflated, the difference between the gas pressure in the airship 1 and the atmospheric pressure is obtained in real time. When the difference exceeds a first preset value, the first control component is controlled to open, and the air in the first airbag 11 is discharged until the difference is within a threshold range. The first control component is controlled to close. During the ascent of the airship 1 and the zero-pressure balloon 2, the pressure difference between the inside and outside of the airship 1 is continuously adjusted. After the zero-pressure balloon 2 is fully inflated, the airship 1 and the zero-pressure balloon 2 are in a floating state.

[0045] Specifically, before the aerostat 1 is released, since the atmospheric density on the ground is more than ten times that of the atmospheric density in the adjacent space, the first airbag 11 and the second airbag 12 have not yet expanded into shape on the ground. When released, the internal air pressure of the first airbag 11 and the second airbag 12 is greater than the external atmospheric pressure during the ascent, and the first airbag 11 and the second airbag 12 gradually expand until they are fully inflated. After the first airbag 11 and the second airbag 12 are fully inflated, the pressure sensor sends the real-time detected pressure data to the controller, and the controller calculates the difference between the gas pressure and the atmospheric pressure in real time. When the difference exceeds the first preset value, the controller controls the first control component to open, and the first airbag 11 exhausts to the outside to reduce the internal air pressure. When the difference between the gas pressure and the atmospheric pressure decreases to within the threshold range, the controller controls the first valve 111 and the first fan to stop running. The aerostat 1 continues to rise. During the ascent of the aerostat 1, the controller always controls the first valve 111 and the first fan to start or close according to the pressure difference, so that the pressure difference between the internal air pressure of the aerostat 1 and the external atmospheric pressure is always within the threshold range.

[0046] After the first airbag 11 and the second airbag 12 are fully inflated, the aerostat 1 continues to rise, the atmospheric density and atmospheric pressure are further reduced, and the zero-pressure balloon 2 is fully inflated. After the zero-pressure balloon 2 is fully inflated, the aerostat 1 and the zero-pressure balloon 2 continue to rise until the total buoyancy and total weight of the near-space moored floating system are equal, and the aerostat 1 and the zero-pressure balloon 2 no longer move up and down and are in a floating state.

[0047] In the launching method provided by the embodiment of the present invention, during the ascent of the aerostat, the mooring rope is not connected to the ground, and the aerostat will not form a wind hood, thereby avoiding damage to the aerostat capsule or the mooring rope, so that the aerostat can be safely launched into the near space, providing technical support for the development and utilization of the near space.

[0048] When the aerostat 1 and the zero-pressure balloon 2 are in a floating state, the first cutter 711 is controlled to cut off the first connecting member 71 to make the drum 5 fall. When the drum 5 is close to the sea level, the torque of the output shaft 55 of the magnetic powder clutch is increased to reduce the descending speed of the drum 5. The operator finds the drum 5 based on the position information of the drum 5 sent by the locator and makes the drum 5 land on the ship.

[0049] After the drum 5 is lowered to the ship, the mooring rope 3 is connected to the winch 6 on the ship. When the winch 6 retracts the rope, the airship 1 can be pulled down. During the descent of the airship 1, as the height of the airship 1 gradually decreases, the atmospheric density and atmospheric pressure increase, and the pressure difference between the inside and outside of the airship 1 gradually decreases. When the pressure difference between the inside and outside of the airship 1 is equal to zero. The controller controls the second valve 121 and the second fan 122 to open, so as to discharge the helium in the zero-pressure balloon 2 into the second airbag 12, until the pressure difference between the inside and outside of the airship 1 is greater than the second preset value. Continue to retract the rope until the height of the airship 1 is reduced to the target height.

[0050] After the height of the aerostat 1 is lowered to the target height, the controller controls the second cutter 721 to operate, cut off the second connection member 72, and the zero-pressure balloon 2 drifts to the downwind direction under the action of the wind. The controller controls the third cutter 731 to operate, cut off the third connection member 73, and the zero-pressure balloon 2 floats away under the action of the wind field.

[0051] Further, in an embodiment of the present invention, the release method further includes: when the aerostat 1 descends to the target height and stays in the adjacent space, when the difference between the internal air pressure of the aerostat 1 and the atmospheric pressure is less than a third preset value, controlling the first valve 111 and the first fan to open, filling the first airbag 11 with external air to increase the air pressure in the first airbag 11, thereby increasing the pressure difference between the inside and outside of the aerostat 1, and thereby making the difference within a threshold range; when the difference between the internal air pressure of the aerostat 1 and the atmospheric pressure is greater than a third preset value, controlling the first valve 111 and the first fan to open, exhausting the gas in the first airbag 11, thereby reducing the air pressure in the first airbag 11, thereby making the pressure difference between the inside and outside of the aerostat 1 within the threshold range. At the same time, by retracting and releasing the mooring rope, the aerostat 1 is always operated at the target height.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A near-space tethered floating system, characterized in that: include: An aerostat, a zero-pressure balloon, a pod and a drum; the aerostat, the zero-pressure balloon and the pod are connected in sequence, the pod is connected to the drum via a mooring rope, and the aerostat can drive the drum to rise together when released.

2. The near-space moored floating system according to claim 1, characterized in that: The aerostat comprises a first airbag and a second airbag, the first airbag is connected to the second airbag, the second airbag is connected to the pod, the first airbag is filled with air, the second airbag is filled with helium, the first airbag is connected to a first air pipe, and the first air pipe is provided with a first control component; A pressure sensor is provided in the first airbag or the second airbag, and the pressure sensor is used to detect the pressure of the gas in the aerostat. A controller is provided in the pod, and the controller is used to control the first control component to open according to the difference between the pressure detected by the pressure sensor and the atmospheric pressure, so as to achieve exhaust or intake, so as to adjust the pressure of the aerostat; The zero-pressure balloon is connected to the second airbag and the pod respectively, and the zero-pressure balloon is filled with helium; The second airbag is connected to a second air tube, the second air tube is provided with a second control component, and the zero-pressure balloon is connected to the second air tube through a third air tube; The controller is also used for controlling the second control component to open when the difference between the pressure in the aerostat and the atmospheric pressure is equal to zero, so as to discharge the helium in the zero-pressure balloon into the second airbag.

3. The near-space moored floating system according to claim 1, characterized in that: The roller comprises: a roller body, a pair of baffles, a magnetic powder clutch and a rotating arm; A pair of baffles are arranged on both sides of the drum body, the magnetic powder clutch is arranged in the drum body, and the output shaft of the magnetic powder clutch passes through the pair of baffles and is rotatably connected with the rotating arm; The magnetic powder clutch can drive the drum body to rotate when rotating. The first end of the mooring rope is wound around the drum body, and the second end of the mooring rope passes through the rotating arm and is connected to the pod. The rotation speed of the magnetic powder clutch is adjustable.

4. The near-space moored floating system according to claim 3, characterized in that: A locator is also provided in the pod, and the locator is used to locate the position of the roller.

5. The near-space moored floating system according to claim 2, characterized in that: It also includes a plurality of connecting pieces, each of which is provided with a cutter, and the cutter is used to cut off the connecting piece; The pod is connected to the drum via the connector, the zero-pressure balloon is connected to the second airbag via the connector, and the zero-pressure balloon is connected to the pod via the connector.

6. A method for distributing a near-space tethered floating system according to any one of claims 1 to 5, characterized in that: include: A certain amount of air is filled into the first airbag, and a target mass of helium is filled into the second airbag and the zero-pressure balloon; releasing the aerostat and the zero-pressure balloon; After the first airbag and the second airbag are fully inflated, the difference between the gas pressure in the aerostat and the atmospheric pressure is obtained in real time, and when the difference exceeds a first preset value, the first control component is controlled to open to discharge the air in the first airbag until the difference is within a threshold range, and the first control component is controlled to close, and the pressure difference between the inside and outside of the aerostat is continuously adjusted during the ascent of the aerostat and the zero-pressure balloon; After the zero-pressure balloon is fully inflated, the aerostat and the zero-pressure balloon are in a floating state.

7. The distribution method according to claim 6, characterized in that: Also includes: When the aerostat and the zero-pressure balloon are in a floating state, controlling the cutter to cut off the connection between the drum and the pod to make the drum fall; When the drum approaches the sea level, reducing the descending speed of the drum; Based on the position information of the roller sent by the locator, the roller is found and landed on the ship.

8. The distribution method according to claim 6, characterized in that: Also includes: Controlling the aerostat to descend by retracting the mooring rope; During the descent of the aerostat, the pressure difference between the inside and outside of the aerostat gradually decreases, and when the difference is equal to zero, the second control component is controlled to open to discharge the helium in the zero-pressure balloon into the second airbag until the difference is greater than a second preset value; During the process of the zero-pressure balloon inflating the second airbag, the mooring rope is continuously retracted until the aerostat descends to the target height.

9. The distribution method according to claim 8, characterized in that: Also includes: When the aerostat descends to the target height, the cutter is controlled to cut off the connection between the second airbag and the zero-pressure balloon, and then the connection between the zero-pressure balloon and the pod is cut off.

10. The distribution method according to claim 9, characterized in that: The distribution method also includes: When the aerostat is in a stationary state, when the difference is less than a third preset value, the first control component is controlled to open to fill the first airbag with external air; when the difference is greater than the third preset value, the first control component is controlled to open to discharge the gas in the first airbag; At the same time, the aerostat is always located at the target height by retracting and releasing the mooring rope.

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