Variable-wing floating device suitable for high-altitude wind power generation, working method and umbrella ladder

Abstract

The invention relates to the technical field of high-altitude wind power generation, in particular to a variable-wing floating device suitable for high-altitude wind power generation, a working method and an umbrella ladder. The wing type bags capable of being opened and closed are symmetrically arranged on the two sides of the floating body, so that in the initial rising process of the floating body, due to the fact that air is gradually rarefied, the internal and external pressure difference between the floating body and the wing type bags is gradually increased, and the size of the floating body and the size of the wing type bags are gradually increased; the wing type bag body is still kept in a closed state and is attached to the outer surface of the floating main body; when the floating main body ascends to the preset height, the volume of the floating main body and the volume of the wing type bag body both reach the maximum, at the moment, the wing type bag body can be switched from the closed state to the open state, in this way, the wing type bag body can generate upward lifting force under the action of wind power, and therefore the floating main body continues to ascend. Therefore, according to the technical scheme, the acting interval of the umbrella ladder can be widened, and the acting capacity of the umbrella ladder is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-altitude wind power generation, and in particular to a variable-wing floating device suitable for high-altitude wind power generation, a working method and a parachute ladder. BACKGROUND

[0002] High-altitude wind energy is a new energy that humans have just begun to develop and utilize. Research has shown that the wind energy contained in the high-altitude is more than 100 times the total energy required by human society. Therefore, high-altitude wind power generation technology is the development trend of future wind power generation.

[0003] In related technologies, a parachute ladder suitable for high-altitude wind power generation generally includes a cable and a parachute body (such as a working parachute, a balance parachute, etc.) and a floating device (such as a helium balloon, an airship, etc.) provided on the cable. The parachute ladder relies on the floating device to provide a substantially constant initial lift to ensure the opening of the parachute body when initially floating and to prevent the overall overturning during the ascending work and descending recovery processes. However, the inventors have found in the development process that as the floating device rises, the air gradually becomes thin, and even if the floating device uses a zero-pressure balloon, the buoyancy will still gradually decrease. The high-altitude wind power gradually increases, which causes the overturning moment of the parachute ladder to increase. Therefore, the parachute ladder has a limitation on the work height during the ascending work, which reduces the work space of the parachute ladder.

[0004] Therefore, there is an urgent need to provide a variable-wing floating device suitable for high-altitude wind power generation, a working method and a parachute ladder to solve the above technical problems. SUMMARY

[0005] The present application provides a variable-wing floating device suitable for high-altitude wind power generation, a working method and a parachute ladder, which can increase the work space of the parachute ladder.

[0006] In a first aspect, the present application provides a variable-wing floating device suitable for high-altitude wind power generation, which is arranged at the top of a parachute ladder and includes: a floating main body; an even number of openable and closable wing-shaped capsules symmetrically arranged on both sides of the floating main body; During the initial ascending process of the floating main body, the volumes of the floating main body and the wing-shaped capsules gradually increase. When the floating main body rises to a preset height, the volumes of the floating main body and the wing-shaped capsules reach the maximum, and the wing-shaped capsules are switched from a closed state to an open state to generate upward lift under the action of wind force, so that the floating main body continues to rise. When in the closed state, the wing-shaped capsules are attached to the outer surface of the floating main body, and when in the open state, the wing-shaped capsules are unfolded to form wings on both sides of the floating main body.

[0007] In one embodiment, the wing-shaped capsule has a deformable tube inside. When the wing-shaped capsule is in a closed state, the tube does not deform, and when the wing-shaped capsule is in an open state, the tube deforms and is supported on the inner surface of the wing-shaped capsule.

[0008] In one embodiment, the tube is an air tube, and an air pump is provided on the buoyancy body. The air pump is connected to the air tube. When the wing-shaped capsule is in the closed state, the air pump is turned off, and when the wing-shaped capsule is in the open state, the air pump is turned on and inflates the air tube.

[0009] In one embodiment, the buoyancy body is provided with a bending unit, which is connected to the wing-shaped capsule and is used to control the opening and closing state of the wing-shaped capsule.

[0010] In one embodiment, the bending unit includes a motor disposed on the buoyancy body, a rotating shaft connected to the motor, and a connecting rope wound around the rotating shaft. The end of the connecting rope is connected to the wing-shaped capsule, and the opening and closing state of the wing-shaped capsule is controlled by using the winding of the connecting rope around the rotating shaft.

[0011] In one embodiment, an energy storage unit is provided on the floating body, and the energy storage unit is electrically connected to the air pump and the bending unit respectively.

[0012] In one embodiment, the energy storage unit may take the form of wind turbine energy storage or solar energy storage; and / or, The buoyant body is a balloon or an airship. When the buoyant body is an airship, a tail fin is provided on the outer surface of the buoyant body.

[0013] Secondly, embodiments of the present invention provide a method for operating a variable-wing aerodynamic device suitable for high-altitude wind power generation, applied to the variable-wing aerodynamic device described in the above embodiments, comprising: Initial levitation phase: The levitation body drives the parachute ladder to achieve initial levitation. At this time, the volume of the levitation body is at its smallest, and the volume of the wing-shaped capsule is at its smallest and it is attached to the outer surface of the levitation body. Ascent and work phase: As the altitude increases, the volume of both the buoyant main body and the wing-shaped capsule gradually increases. When the buoyant main body rises to a preset height, the wing-shaped capsule is switched from a closed state to an open state, so that the upward lift is generated under the action of wind, allowing the buoyant main body to continue to rise.

[0014] In one embodiment, it also includes: Descent and recovery phase: As the altitude decreases, the volume of the buoyant body and the wing-shaped capsule remains at its maximum. When the buoyant body descends to the preset altitude, the wing-shaped capsule is switched from the open state to the closed state. As the altitude continues to decrease, the volume of both the buoyant body and the wing-shaped capsule gradually decreases.

[0015] Thirdly, embodiments of the present invention provide a parachute ladder suitable for high-altitude wind power generation, including a cable and a parachute body and a levitation device disposed on the cable, wherein the levitation device is a variable-wing levitation device as described in the above embodiments.

[0016] Compared with related technologies, the present invention has at least the following beneficial effects: According to embodiments of the present invention, a variable-wing levitation device, operating method, and parachute ladder suitable for high-altitude wind power generation are provided. By symmetrically arranging openable wing-shaped capsules on both sides of the levitation body, during the initial ascent of the levitation body, as the air gradually thins, the pressure difference between the inside and outside of the levitation body and the wing-shaped capsules gradually increases. Therefore, the volumes of both the levitation body and the wing-shaped capsules gradually increase, while the wing-shaped capsules remain closed and adhere to the outer surface of the levitation body. When the levitation body rises to a preset height, the volumes of both the levitation body and the wing-shaped capsules reach their maximum. At this point, the wing-shaped capsules can be switched from the closed state to the open state, allowing them to generate upward lift under the action of wind, thereby enabling the levitation body to continue ascending. Therefore, the above technical solution can widen the working range of the parachute ladder and increase its work capacity. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Fig. 1 A schematic diagram of the structure of the buoyancy device for high-altitude wind power generation provided in an embodiment of the present invention when the wing-shaped capsule is in a closed state; Fig. 2 A schematic diagram of the structure of the buoyancy device for high-altitude wind power generation provided in an embodiment of the present invention when the wing-shaped capsule is in the open state; Fig. 3 This is a schematic diagram of the structure of an umbrella ladder suitable for high-altitude wind power generation, provided as an embodiment of the present invention.

[0019] Figure label: 10 - Floating device; 20 - Cable; 30 - Parachute body; 1-Floating main body; 11-Tail fin; 2-wing-shaped capsule; 3-Air pump; 4-Bending unit; 41-Motor; 42-Shaft; 43-Connecting rope; 5-Energy storage unit. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] As mentioned earlier, increasing the power of the parachute ladder would increase the size of the levitation device, requiring a redesign of the materials and structures used in existing levitation devices. Furthermore, levitation devices such as zero-pressure balloons may experience increased wind resistance near the ground due to incomplete inflation of the air bladder, posing a risk of being unable to penetrate wind layers at different altitudes.

[0022] In some related technologies, adding auxiliary airbags can be considered to maintain the balloon's shape. While this configuration increases the balloon's wind resistance to some extent, the rapid ascent and descent of the parachute ladder can cause the auxiliary airbags to fail to inflate and deflate synchronously. Therefore, if the lift of the parachute ladder can be increased accordingly with increasing wind speed, it will expand the ladder's operational space and increase its anti-tipping capability.

[0023] During the research and development process, the inventors discovered that widening the working range of the parachute ladder and increasing its working capacity can be achieved by increasing the anti-tipping moment of the parachute ladder and improving the lift of the top levitation device. Therefore, the inventors considered using high-altitude wind power to increase the lift of the levitation device.

[0024] like Figs. 1 to 3 As shown, this embodiment of the invention provides a variable-wing levitation device 10 suitable for high-altitude wind power generation, which is set on the top of a parachute ladder and includes a levitation body 1 and an even number of openable and closable wing-shaped capsules 2, with the wing-shaped capsules 2 symmetrically arranged on both sides of the levitation body 1. During the initial ascent of the airborne main body 1, the volumes of both the airborne main body 1 and the wing-shaped capsule 2 gradually increase. When the airborne main body 1 rises to the preset height, the volumes of both the airborne main body 1 and the wing-shaped capsule 2 reach their maximum. The wing-shaped capsule 2 switches from a closed state to an open state, so as to generate upward lift under the action of wind force, allowing the airborne main body 1 to continue to rise. In the closed state, the wing-shaped capsule 2 is attached to the outer surface of the airborne main body 1. In the open state, the wing-shaped capsule 2 unfolds on both sides of the airborne main body 1 to form wings.

[0025] In this embodiment, by symmetrically arranging openable wing-shaped capsules 2 on both sides of the floating main body 1, during the initial ascent of the floating main body 1, as the air gradually thins, the pressure difference between the inside and outside of the floating main body 1 and the wing-shaped capsules 2 gradually increases. Therefore, the volumes of both the floating main body 1 and the wing-shaped capsules 2 gradually increase, while the wing-shaped capsules 2 remain closed and adhere to the outer surface of the floating main body 1. When the floating main body 1 rises to a preset height, the volumes of both the floating main body 1 and the wing-shaped capsules 2 reach their maximum. At this point, the wing-shaped capsules 2 can be switched from the closed state to the open state, allowing them to generate upward lift under the influence of wind, thus enabling the floating main body 1 to continue ascending. Therefore, the above technical solution can widen the working range of the parachute ladder and increase its work capacity.

[0026] It is understandable that during the process of the levitation device 10 continuing to rise at the preset height, both the levitation body 1 and the wing-shaped capsule 2 are under overpressure. Therefore, it is necessary to ensure that the materials used to make both can withstand the overpressure state in order to prevent them from exploding due to the overpressure state.

[0027] In some implementations, the preset height may be in the range of 1000~2000m, and no specific limitation is made here.

[0028] In related technologies, the levitation device 10 has a large wind resistance during descent and recovery. The adjustment range of reducing the pulling force required for recovery by closing the parachute body 30 is limited. Therefore, it still suffers from the problem of the ground rope reel motor consuming a lot of electrical energy, which is not conducive to the net output of the parachute ladder during the work cycle.

[0029] To solve this technical problem, the wing-shaped capsule 2 can be gradually closed during the recovery phase of the aerostat 10. That is, as the altitude decreases, the volume of the aerostat body 1 and the wing-shaped capsule 2 remains at its maximum. When the aerostat body 1 descends to a preset altitude, the wing-shaped capsule 2 is switched from the open state to the closed state. As the altitude continues to decrease, the volume of both the aerostat body 1 and the wing-shaped capsule 2 gradually decreases.

[0030] In one embodiment of the present invention, a deformable tube (not shown in the figure) is provided inside the wing-shaped capsule 2. When the wing-shaped capsule 2 is in the closed state, the tube does not deform. When the wing-shaped capsule 2 is in the open state, the tube deforms and is supported on the inner surface of the wing-shaped capsule 2.

[0031] In this embodiment, by setting deformable tubing inside the wing-shaped capsule 2, the tubing deforms and supports the inner surface of the wing-shaped capsule 2 when the wing-shaped capsule 2 is in the open state, thus forming the internal "skeleton" of the wing-shaped capsule 2, increasing the structural rigidity of the wing-shaped capsule 2, and making it the "wing" of the levitation body 1.

[0032] In one embodiment of the present invention, the tube is an air tube, and an air pump 3 is provided on the buoyancy body 1. The air pump 3 is connected to the air tube. When the wing-shaped capsule 2 is in the closed state, the air pump 3 is turned off, and when the wing-shaped capsule 2 is in the open state, the air pump 3 is turned on and inflates the air tube.

[0033] In some embodiments, the tubing can also be other deformable tubing, such as a spring tube. The difference between the spring tube and the air tube is that the spring tube always provides support for the inner surface of the wing-shaped bladder 2, while the air tube does not provide support for the inner surface of the wing-shaped bladder 2 when it is not inflated, and only provides support for the inner surface of the wing-shaped bladder 2 when it is inflated.

[0034] In one embodiment of the present invention, a bending unit 4 is provided on the floating body 1. The bending unit 4 is connected to the wing-shaped capsule 2 and is used to control the opening and closing state of the wing-shaped capsule 2.

[0035] In one embodiment of the present invention, the bending unit 4 includes a motor 41 disposed on the floating body 1, a rotating shaft 42 connected to the motor 41, and a connecting rope 43 wound around the rotating shaft 42. The end of the connecting rope 43 is connected to the wing-shaped capsule 2, and the opening and closing state of the wing-shaped capsule 2 is controlled by using the winding of the connecting rope 43 on the rotating shaft 42.

[0036] Of course, the bending unit 4 can also be any other structural form that can control the opening and closing state of the wing-shaped capsule 2, and no specific limitation is made here.

[0037] In one embodiment of the present invention, an energy storage unit 5 is provided on the floating body 1, and the energy storage unit 5 is electrically connected to the air pump 3 and the bending unit 4 respectively.

[0038] In this embodiment, by setting an energy storage unit 5 on the buoyancy body 1, the energy storage unit 5 can supply electrical energy to the air pump 3 and the bending unit 4. Since the air pump 3 and the bending unit 4 are mainly used for the deployment and shaping of the wing-shaped capsule 2, they do not require too much electricity, thus not increasing the load on the buoyancy device 10.

[0039] In one embodiment of the present invention, the energy storage unit 5 may take the form of wind turbine energy storage or solar energy storage.

[0040] When the energy storage unit 5 is in the form of wind turbine energy storage, a small wind turbine and battery can be installed on the floating body 1 (e.g., at the bottom of the floating body 1) to charge the battery by rotating the wind turbine; when the energy storage unit 5 is in the form of solar energy storage, a small photovoltaic panel array and battery can be installed on the floating body 1 (e.g., at the top of the floating body 1) to charge the battery by absorbing solar energy through the photovoltaic panel array.

[0041] In one embodiment of the present invention, the buoyancy body 1 is a balloon or an airship. When the buoyancy body 1 is an airship, a tail fin 11 is provided on the outer surface of the buoyancy body 1, which can help the airship to face the wind.

[0042] Furthermore, this embodiment of the invention also provides a method for operating a variable-wing aerodynamic device 10 suitable for high-altitude wind power generation, applied to the variable-wing aerodynamic device 10 mentioned in the above embodiments, including: Initial levitation phase: The levitation body 1 is used to drive the parachute ladder to achieve initial levitation. At this time, the volume of the levitation body 1 is at its smallest, and the volume of the wing-shaped capsule 2 is at its smallest and it is attached to the outer surface of the levitation body 1. Ascent and work phase: As the altitude increases, the volume of both the floating main body 1 and the wing-shaped capsule 2 gradually increases. When the floating main body 1 rises to the preset height, the wing-shaped capsule 2 is switched from the closed state to the open state, so that the upward lift is generated under the action of the wind, allowing the floating main body 1 to continue to rise.

[0043] It is understood that the working method of the variable wing floating device 10 for high-altitude wind power generation provided in the embodiments of the present invention and the variable wing floating device 10 for high-altitude wind power generation provided in the above embodiments are based on the same inventive concept, and therefore have the same beneficial effects. The beneficial effects of the working method of the variable wing floating device 10 for high-altitude wind power generation will not be elaborated here.

[0044] In one embodiment of the present invention, the above method further includes: Descent and recovery phase: As the altitude decreases, the volume of the floating main body 1 and the wing-shaped capsule 2 remains at its maximum. When the floating main body 1 descends to the preset altitude, the wing-shaped capsule 2 is switched from the open state to the closed state. As the altitude continues to decrease, the volume of both the floating main body 1 and the wing-shaped capsule 2 gradually decreases.

[0045] In this embodiment, by closing the wing-shaped capsule 2 during the descent and recovery phase, the resistance caused by the lift of the wing-shaped capsule 2 to the buoyancy device 10 during the recovery process can be reduced, thereby reducing the energy consumption of the parachute ladder during the recovery process.

[0046] In addition, this embodiment of the invention also provides a parachute ladder suitable for high-altitude wind power generation systems, including a cable 20 and a parachute body 30 and a levitation device 10 disposed on the cable 20. The levitation device 10 is the variable-wing levitation device 10 mentioned in any of the above embodiments.

[0047] It is understood that the parachute ladder for high-altitude wind power generation system provided in the embodiments of the present invention and the variable wing levitation device 10 for high-altitude wind power generation provided in the above embodiments are based on the same inventive concept, and therefore have the same beneficial effects. The beneficial effects of the parachute ladder for high-altitude wind power generation system will not be elaborated here.

[0048] In some implementations, the umbrella body may include a power umbrella and a balancing umbrella, without specific limitations.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A variable-wing aerodynamic device suitable for high-altitude wind power generation, characterized in that, Located at the top of the umbrella ladder, including: Floating main body; An even number of openable and foldable wing-like capsules are symmetrically arranged on both sides of the levitation body; During the initial ascent of the buoyant body, the volumes of both the buoyant body and the wing-shaped capsule gradually increase. When the buoyant body reaches a preset height, the volumes of both the buoyant body and the wing-shaped capsule reach their maximum. The wing-shaped capsule switches from a closed state to an open state to generate upward lift under the action of wind, allowing the buoyant body to continue to rise. In the closed state, the wing-shaped capsule is attached to the outer surface of the buoyant body, and in the open state, the wing-shaped capsule unfolds on both sides of the buoyant body to form wings.

2. The variable-wing levitation device according to claim 1, characterized in that, The wing-shaped capsule has a deformable tube inside. When the wing-shaped capsule is in the closed state, the tube does not deform. When the wing-shaped capsule is in the open state, the tube deforms and is supported on the inner surface of the wing-shaped capsule.

3. The variable-wing levitation device according to claim 2, characterized in that, The tube is an air tube, and an air pump is installed on the buoyancy body. The air pump is connected to the air tube. When the wing-shaped capsule is in the closed state, the air pump is turned off, and when the wing-shaped capsule is in the open state, the air pump is turned on and inflates the air tube.

4. The variable-wing aerodynamic device according to claim 3, characterized in that, The floating main body is provided with a bending unit, which is connected to the wing-shaped capsule. The bending unit is used to control the opening and closing state of the wing-shaped capsule.

5. The variable-wing aerodynamic device according to claim 4, characterized in that, The bending unit includes a motor mounted on the buoyancy body, a rotating shaft connected to the motor, and a connecting rope wound around the rotating shaft. The end of the connecting rope is connected to the wing-shaped capsule. The opening and closing state of the wing-shaped capsule is controlled by winding the connecting rope around the rotating shaft.

6. The variable-wing aerodynamic device according to claim 4, characterized in that, An energy storage unit is provided on the floating body, and the energy storage unit is electrically connected to the air pump and the bending unit respectively.

7. The variable-wing aerodynamic device according to claim 6, characterized in that, The energy storage unit may take the form of wind turbine energy storage or solar energy storage; and / or, The buoyant body is a balloon or an airship. When the buoyant body is an airship, a tail fin is provided on the outer surface of the buoyant body.

8. A method for operating a variable-wing buoyancy device suitable for high-altitude wind power generation, characterized in that, The variable-wing aerodynamic device as described in any one of claims 1-7 comprises: Initial levitation phase: The levitation body drives the parachute ladder to achieve initial levitation. At this time, the volume of the levitation body is at its smallest, and the volume of the wing-shaped capsule is at its smallest and it is attached to the outer surface of the levitation body. Ascent and work phase: As the altitude increases, the volume of both the buoyant main body and the wing-shaped capsule gradually increases. When the buoyant main body rises to a preset height, the wing-shaped capsule is switched from a closed state to an open state, so that the upward lift is generated under the action of wind, allowing the buoyant main body to continue to rise.

9. The working method according to claim 8, characterized in that, Also includes: Descent and recovery phase: As the altitude decreases, the volume of the buoyant body and the wing-shaped capsule remains at its maximum. When the buoyant body descends to the preset altitude, the wing-shaped capsule is switched from the open state to the closed state. As the altitude continues to decrease, the volume of both the buoyant body and the wing-shaped capsule gradually decreases.

10. A parachute ladder suitable for high-altitude wind power generation systems, characterized in that, It includes a cable and a parachute and a levitation device disposed on the cable, wherein the levitation device is a variable-wing levitation device as described in any one of claims 1-7.

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