Aerostat with built-in pressure adjusting structure, wind power generation system and control method

Abstract

The invention discloses an aerostat with a built-in pressure adjusting structure, a wind power generation system and a control method, the aerostat of one embodiment comprises an auxiliary air bag, the pressure adjusting structure arranged in the auxiliary air bag and a pressure control structure arranged outside the auxiliary air bag, the pressure adjusting structure comprises an air duct pipe, a first valve arranged at one end of the air duct pipe, a second valve arranged at the other end of the air duct pipe and a fan arranged in the air duct pipe and located between the first valve and the second valve. The pressure control structure comprises a controller and a differential pressure sensor, and the controller is used for controlling the fan, the first valve and the second valve to exhaust or inflate the auxiliary air bag according to the air pressure, sensed by the differential pressure sensor, of the bag body. According to the embodiment, the pressure adjusting structure of the aerostat is integrally arranged in the auxiliary air bag, the beneficial effects of being compact in structure, good in air tightness and the like are achieved, the stability and reliability of the aerostat are remarkably improved, and the practical application value is achieved.

Description

[0001] This application is a divisional application of Chinese patent application No. 202510403648.1, filed on April 1, 2025, entitled "Aircraft with Built-in Pressure Regulation Structure, Wind Power Generation System and Control Method". Technical Field

[0002] This invention relates to the field of wind power generation technology, and in particular to an airship with a built-in pressure regulation structure, a wind power generation system, and a control method. Background Technology

[0003] High-altitude wind power generation systems use floating platforms to carry wind turbines to altitudes of 500m to 10,000m. Taking advantage of the stability, high wind speed, large power generation capacity, and stable output power of high-altitude wind energy, it is a wind power generation product with broad application prospects.

[0004] The pressure regulating device of the floating platform in a high-altitude wind power generation system consists of a wind turbine assembly and valves. The wind turbine assembly comprises a wind turbine, a check valve, and a flange. During installation, holes are drilled at corresponding locations within the bladder, and the wind turbine assembly and valve assembly are mounted onto the bladder via flange connections. The following problems exist:

[0005] 1. Issues with fan flow and static pressure loss: The fan assembly uses a check valve. When the check valve is not activated, it is sealed by spring force. After the fan is started, the airflow will push open the check valve cover and inflate the air bag. The airflow needs to overcome the spring force of the check valve, which results in a loss of the fan's static pressure and flow.

[0006] 2. The pressure regulating device has problems with poor sealing and rapid leakage, and cannot adapt to high-pressure ring blade pressure regulation. In order to reduce the loss of static pressure and flow of the blower, the spring force of the check valve cannot be set too high, resulting in poor sealing performance of the check valve. Under high pressure conditions, the gas leakage is too fast, and it is only suitable for bladders with pressure below 1000Pa. It cannot be used for bladder pressure regulation above 1000Pa.

[0007] 3. Split structure, inconvenient installation: The fan assembly and valve assembly are independent structures, using a flange connection to the bladder body. Two flanges need to be installed separately during assembly, making the installation relatively complicated.

[0008] 4. Without a dehumidification structure, the water condensed and accumulated inside the bag cannot be discharged automatically and must be manually discharged after being retrieved and anchored, which is complicated to operate. Summary of the Invention

[0009] To address at least one of the aforementioned problems, a first embodiment of the present invention provides an airship based on a built-in pressure regulation structure, comprising an auxiliary airbag, a pressure regulation structure disposed inside the auxiliary airbag, and a pressure control structure disposed outside the auxiliary airbag, wherein...

[0010] The pressure regulating structure includes a duct pipe, a first valve disposed at one end of the duct pipe, a second valve disposed at the other end of the duct pipe, and a fan disposed in the duct pipe between the first valve and the second valve.

[0011] The pressure control structure includes a controller and a differential pressure sensor. The controller is used to control the fan, the first valve, and the second valve to vent or inflate the auxiliary airbag according to the air pressure of the airbag sensed by the differential pressure sensor.

[0012] For example, in some embodiments of the airship provided in this application, the pressure regulating structure further includes a valve motor, a reduction gearbox, a valve connecting rod, a first bevel gear, and a second bevel gear disposed outside the air duct, wherein...

[0013] The valve rod includes a first end and a second end. The first end of the valve rod drives the first valve through the first bevel gear, and the second end of the valve rod drives the second valve through the second bevel gear.

[0014] The valve motor drives the valve linkage through the gearbox.

[0015] For example, in some embodiments of the airship provided in this application, the pressure regulating structure further includes a first valve driving device and a second valve driving device disposed outside the air duct, wherein

[0016] The first valve drive device includes a first valve motor that drives the first valve;

[0017] The second valve drive device includes a second valve motor that drives the second valve.

[0018] For example, in some embodiments of the airship provided in this application, the first valve, the air duct and the fan form a first cavity, and the airship further includes a first drying chamber disposed on the wall of the air duct of the first cavity, the first drying chamber including a first desiccant, a first heating film and a first drying valve cover covering the first drying chamber;

[0019] The second valve, the air duct, and the fan form a second cavity. The air levitation device also includes a second drying chamber disposed on the wall of the air duct of the second cavity. The second drying chamber includes a second desiccant, a second heating film, and a second drying valve cover covering the second drying chamber.

[0020] The air buoy also includes a drying push rod disposed outside the air duct and a drying connecting rod that connects the first drying valve cover and the second drying valve cover respectively. The drying push rod drives the first drying valve cover and the second drying valve cover through the drying connecting rod.

[0021] For example, in some embodiments of the airship provided in this application, the auxiliary airbag includes multiple sub-airbags;

[0022] The pressure control structure includes sub-control structures corresponding to each sub-airbag, and each sub-control structure is located at the bottom of the corresponding sub-airbag.

[0023] For example, in some embodiments of the airship provided in this application, the auxiliary airbag includes multiple sub-airbags;

[0024] The pressure control structure includes sub-control structures corresponding to each sub-airbag, and the aerostat includes a control console, with each sub-control structure disposed within the control console.

[0025] For example, in some embodiments of the airship provided in this application, the auxiliary airbag includes a first opening, the first opening is provided with a first flange, and the first flange includes a first mounting part;

[0026] The duct also includes a second flange disposed near the first valve, the second flange including a second mounting portion for fixing to the first mounting portion.

[0027] A second embodiment of the present invention provides a wind power generation system, including an airship as described in the first embodiment, and a wind turbine mounted on the airship.

[0028] A third embodiment of the present invention provides a control method applied to a wind power generation system as described in the second embodiment, comprising:

[0029] The controller of the pressure control structure controls the fan, the first valve, and the second valve to vent or inflate the auxiliary airbag based on the air pressure of the airbag sensed by the differential pressure sensor.

[0030] For example, in the control method provided in some embodiments of this application, the controller of the pressure control structure controls the fan, the first valve, and the second valve to deflate or inflate the auxiliary airbag based on the air pressure of the airbag sensed by the differential pressure sensor, further comprising:

[0031] If the air pressure in the bladder is greater than a preset first threshold, the controller controls the first and second valves to open and controls the fan to reverse to discharge the gas in the auxiliary airbag until the air pressure in the bladder is less than or equal to the second threshold.

[0032] If the air pressure in the bag is less than a preset third threshold, the controller controls the first and second valves to open and controls the fan to rotate forward to fill the auxiliary air bag with ambient air until the air pressure in the bag is greater than or equal to a fourth threshold.

[0033] For example, in some embodiments of the control method provided in this application, the first valve, the duct pipe, and the fan form a first cavity, and the aerostat further includes a first drying chamber disposed on the wall of the duct pipe of the first cavity, the first drying chamber including a first desiccant, a first heating film, and a first drying valve cover covering the first drying chamber; the second valve, the duct pipe, and the fan form a second cavity, and the aerostat further includes a second drying chamber disposed on the wall of the duct pipe of the second cavity, the second drying chamber including a second desiccant, a second heating film, and a second drying valve cover covering the second drying chamber; the aerostat further includes a drying push rod disposed outside the duct pipe, and a drying connecting rod respectively connecting the first drying valve cover and the second drying valve cover, the drying push rod driving the first drying valve cover and the second drying valve cover through the drying connecting rod, and the control method further includes:

[0034] In static operating mode, the controller controls the first and second valves to close, controls the fan to close, and controls the first and second drying valve covers to close.

[0035] In dehumidification mode, the controller controls the first and second valves to close, controls the fan to reverse, and controls the first and second drying valve covers to open, so that the gas in the auxiliary airbag passes sequentially through the first desiccant in the first drying chamber and the second desiccant in the second drying chamber to dehumidify the gas in the auxiliary airbag.

[0036] In the desiccant dehumidification mode, the controller controls the first and second valves to close, controls the fan to close, controls the first and second drying valve covers to close, controls the first heating film to heat the first desiccant, and controls the second heating film to heat the second desiccant, so that the moisture in the first and second desiccants evaporates.

[0037] One embodiment of the present invention provides an airship based on a built-in pressure regulating structure, including an auxiliary airbag, a pressure regulating structure disposed inside the auxiliary airbag, and a pressure control structure disposed outside the auxiliary airbag, wherein...

[0038] The pressure regulating structure includes a duct pipe, a first valve disposed at one end of the duct pipe, a second valve disposed at the other end of the duct pipe, and a fan disposed in the duct pipe between the first valve and the second valve.

[0039] The pressure control structure includes a controller and a differential pressure sensor. The controller is used to control the fan, the first valve and the second valve to vent or inflate the auxiliary airbag according to the air pressure of the airbag sensed by the differential pressure sensor.

[0040] The first valve, the air duct, and the fan form a first cavity. The air levitation device also includes a first drying chamber disposed on the wall of the air duct of the first cavity. The first drying chamber includes a first desiccant, a first heating film, and a first drying valve cover covering the first drying chamber.

[0041] The second valve, the air duct, and the fan form a second cavity. The air levitation device also includes a second drying chamber disposed on the wall of the air duct of the second cavity. The second drying chamber includes a second desiccant, a second heating film, and a second drying valve cover covering the second drying chamber.

[0042] The airship also includes a drying push rod disposed outside the air duct and a drying connecting rod connected to the first drying valve cover and the second drying valve cover respectively. The drying push rod drives the first drying valve cover and the second drying valve cover through the drying connecting rod in response to the command of the controller.

[0043] For example, in some embodiments of the airship provided in this application, the pressure regulating structure further includes a valve driving device disposed outside the air duct for driving the first valve and the second valve.

[0044] For example, in some embodiments of the airship provided in this application, a first drying chamber disposed in the first cavity and a second drying chamber disposed in the second cavity are symmetrically arranged with respect to the fan.

[0045] One embodiment of the present invention also provides a wind power generation system, including the airship described in the foregoing embodiments and a wind turbine mounted on the airship.

[0046] An embodiment of the present invention also provides a control method applied to a wind power generation system as described in the foregoing embodiments, comprising:

[0047] The controller of the pressure control structure controls the fan, the first valve and the second valve to vent or inflate the auxiliary airbag based on the air pressure of the airbag sensed by the differential pressure sensor;

[0048] The control method further includes:

[0049] In static working mode, the controller controls the first and second valves to close, controls the fan to close, and controls the drying push rod to drive the drying connecting rod to close the first and second drying valve covers.

[0050] In dehumidification mode, the controller controls the first and second valves to close, controls the fan to reverse, and controls the drying push rod to drive the drying connecting rod to open the first and second drying valve covers, so that the gas in the auxiliary airbag passes sequentially through the first desiccant in the first drying chamber and the second desiccant in the second drying chamber to dehumidify the gas in the auxiliary airbag.

[0051] For example, in some embodiments of this application, the control method further includes: in the desiccant dehumidification mode, the controller controls the first valve and the second valve to close, controls the fan to close, controls the drying push rod to drive the drying connecting rod to close the first drying valve cover and the second drying valve cover, controls the first heating film to heat the first desiccant and controls the second heating film to heat the second desiccant, so that the moisture in the first desiccant and the second desiccant evaporates.

[0052] The beneficial effects of this invention are as follows:

[0053] This invention addresses existing problems by providing an airship, wind power generation system, and control method with a built-in pressure regulation structure. The airship integrates the first and second valves of its pressure regulation structure with the wind turbine within a duct, which is then placed inside an auxiliary airbag. The pressure regulation structure responds to the control of a controller located outside the auxiliary airbag, allowing for the deflation or inflation of the airbag. This embodiment integrates the pressure regulation structure within the auxiliary airbag, resulting in a compact structure, high pressure, good airtightness, convenient installation, good maintainability, and good protection. This overcomes the problems of existing technologies, significantly improving the stability and reliability of high-altitude wind power generation systems, and has practical application value. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 A structural block diagram of an airship according to an embodiment of the present invention is shown;

[0056] Figure 2 This diagram illustrates the structure of the ductwork according to one embodiment of the present invention.

[0057] Figure 3 A schematic diagram illustrating the static operating mode according to an embodiment of the present invention is shown;

[0058] Figure 4 A schematic diagram illustrating the inflation mode according to an embodiment of the present invention is shown;

[0059] Figure 5 A schematic diagram illustrating a dehumidification mode according to an embodiment of the present invention is shown;

[0060] Figure 6 A structural block diagram of a wind power generation system according to an embodiment of the present invention is shown. Detailed Implementation

[0061] To more clearly illustrate the present invention, the following description, in conjunction with preferred embodiments and accompanying drawings, further explains the invention. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of the present invention.

[0062] To address the problems existing in the prior art, one embodiment of the present invention provides an airship based on a built-in pressure regulating structure, including an auxiliary airbag, a pressure regulating structure disposed inside the auxiliary airbag, and a pressure control structure disposed outside the auxiliary airbag, wherein...

[0063] The pressure regulating structure includes a duct pipe, a first valve disposed at one end of the duct pipe, a second valve disposed at the other end of the duct pipe, and a fan disposed in the duct pipe between the first valve and the second valve.

[0064] The pressure control structure includes a controller and a differential pressure sensor. The controller is used to control the fan, the first valve, and the second valve to vent or inflate the auxiliary airbag according to the air pressure of the airbag sensed by the differential pressure sensor.

[0065] In this embodiment, as Figure 1 The diagram shows the structural block diagram of the aerostat of the present invention. The aerostat includes a main airbag (not shown) and auxiliary airbags. The auxiliary airbags include, for example, a secondary airbag, a tail fin airbag, and annular airbags. The main airbag is filled with helium and is used to provide buoyancy and support the installation of wind turbines in wind power generation systems when the aerostat is applied. The other airbags are air-filled auxiliary airbags. The secondary airbag is used to maintain the shape of the main airbag, while the tail fin airbag and annular airbag are used to improve the aerostat's aerial stability and stationary capability. Each airbag is an airtight, independent airbag. The tail fin airbag includes four airbags located at the tail of the main airbag, distributed at a 90° angle. The annular airbag includes four airbags respectively fixed to the top of the tail fin airbag.

[0066] In this embodiment, as Figure 2The diagram shows a partial schematic of the auxiliary airbag 30. The auxiliary airbag 30 includes a first opening 31, on which a first flange 32 is provided. The first flange 32 includes a first mounting portion 321. A pressure regulating structure is disposed inside the first opening 31 of the auxiliary airbag and includes an air duct 10, a first valve 11 disposed at one end of the air duct 10, a second valve 12 disposed at the other end of the air duct 10, and a fan 13 disposed in the air duct 10 between the first valve 11 and the second valve 12. The fan 13 in the air duct 10 responds to the controller of the external pressure control structure and operates according to the air pressure of the airbag sensed by the differential pressure sensor. For example, the fan 13 rotates forward or reverse according to the applied voltage. At the same time, the first valve 11 and the second valve 12 open or close in response to the controller, thereby venting or inflating the auxiliary airbag through the fan 13, the first valve 11 and the second valve 12 integrated in the air duct 10. The differential pressure sensor includes a first end and a second end. The first end collects the ambient air pressure, and the second end is connected to the airbag body of the auxiliary airbag to measure the pressure difference between the air pressure inside the auxiliary airbag body and the ambient air pressure. In this embodiment, the pressure control structure is set on a circuit board or control board outside the auxiliary airbag. In addition, in this embodiment, the air duct 10 also includes a second flange 19 disposed near the first valve 11. The second flange 19 includes a second mounting part 191 for fixing to the first mounting part 321. Specifically, the air duct 10 is installed and fixed to the first mounting part 321 of the first flange 32 at the outlet position of the first opening 31 of the auxiliary airbag 30 via the second mounting part 191 of the second flange 19. Compared with the related technology, which uses independent fan and valve assemblies inside the auxiliary airbag for exhaust or inflation and uses flanges for installation according to different structures, this embodiment integrates the first valve, the second valve, and the fan in the air duct, effectively simplifying the pressure regulation structure. It also features convenient installation and maintenance, effectively improving the overall stability and assembly performance of the airship, and effectively reducing the manufacturing cost of the airship.

[0067] In a specific embodiment, such as Figure 2 As shown, the pressure regulating structure also includes a valve motor 14, a reduction gearbox 15, a valve connecting rod 16, a first bevel gear 17, and a second bevel gear 18 disposed outside the air duct. The valve connecting rod 16 includes a first end and a second end. The first end of the valve connecting rod 16 drives the first valve 11 through the first bevel gear 17, and the second end of the valve connecting rod 16 drives the second valve 12 through the second bevel gear 18. The valve motor 14 drives the valve connecting rod 16 through the reduction gearbox 15.

[0068] In this embodiment, considering the overall manufacturing cost and control requirements of the airship, a set of linked actuation devices is installed on the outside of the air duct 10 to synchronously drive the operation of the first valve 11 and the second valve 12. Specifically, the first valve 11 is connected to a first bevel gear 17, that is, the first valve 11 is driven to open and close through the first bevel gear 17; similarly, the second valve 12 is connected to a second bevel gear 18, that is, the second valve 12 is driven to open and close through the second bevel gear 18; at the same time, the two ends of the valve connecting rod 16 are respectively connected to the first bevel gear 17 and the second bevel gear 18, and the valve connecting rod is connected to the reduction gearbox 15, which is driven by the valve fan 14.

[0069] In actual operation, when the differential pressure sensor of the pressure control structure set outside the auxiliary airbag senses the air pressure of the airbag, the controller transmits control signals to the fan 13 and the valve motor 14 according to the sensed air pressure of the airbag. For example, when the air pressure in the airbag exceeds a preset first threshold, such as exceeding the maximum high-pressure threshold for safe operation of the auxiliary airbag, the controller sends an exhaust signal to the fan 13 to reverse the fan and sends a valve opening signal to the valve motor 14. The valve motor 14 drives the reduction gearbox 15 to control the valve linkage 16 to move, opening the first valve 11 and the second valve 12 respectively through the first bevel gear 17 and the second bevel gear 18. Air in the airbag is discharged through the second valve 12, the fan 13, and the first valve 11 until the air pressure in the airbag is less than or equal to the preset second threshold, such as less than or equal to the minimum high-pressure threshold for safe operation of the auxiliary airbag. The controller then sends a shutdown signal to the fan 13 to stop the fan and sends a valve closing signal to the valve motor 14. The valve motor 14 drives the reduction gearbox 15 to control the valve linkage 16 to move, closing the first valve 11 and the second valve 12 respectively through the first bevel gear 17 and the second bevel gear 18.

[0070] Similarly, when the air pressure in the airbag is lower than the preset minimum low-pressure threshold for safe operation of the auxiliary airbag, the controller sends an inflation signal to the fan 13 to make the fan rotate forward and sends a valve opening signal to the valve motor 14. The valve motor 14 drives the reduction gearbox 15 to control the valve linkage 16 to move, opening the first valve 11 and the second valve 12 respectively through the first bevel gear 17 and the second bevel gear 18. Ambient air is filled into the auxiliary airbag through the first valve 11, the fan 13 and the second valve 12 until the air pressure in the airbag is greater than or equal to the preset maximum low-pressure threshold for safe operation of the auxiliary airbag. The controller sends a shutdown signal to the fan 13 to make the fan stop rotating and sends a valve closing signal to the valve motor 14. The valve motor 14 drives the reduction gearbox 15 to control the valve linkage 16 to move, closing the first valve 11 and the second valve 12 respectively through the first bevel gear 17 and the second bevel gear 18.

[0071] To further refine the control of each valve, in an optional embodiment, the pressure regulating structure further includes a first valve drive device and a second valve drive device disposed outside the air duct, wherein the first valve drive device includes a first valve motor that drives the first valve; and the second valve drive device includes a second valve motor that drives the second valve.

[0072] In this embodiment, two sets of actuation devices are set up to drive the first valve and the second valve respectively. Each set of actuation devices includes a valve motor, which responds to the control signal from the controller to control the opening and closing of the corresponding valve, thereby achieving independent control of each valve. For example, the first valve motor responds to the control signal to drive the connected gearbox to control the opening and closing of the first valve through bevel gears, and the second valve motor responds to the control signal to drive the connected gearbox to control the opening and closing of the second valve through bevel gears.

[0073] Considering that the moisture condensing and accumulating in the auxiliary airbag cannot be automatically discharged, in an optional embodiment, such as Figure 2 As shown, the first valve 11, the air duct 10, and the fan 13 form the first cavity, i.e. Figure 2 The airship includes a lower chamber and a first drying chamber 21 disposed on the wall of the air duct 10 of the first chamber. The first drying chamber 21 includes a first desiccant, a first heating film, and a first drying valve cover covering the first drying chamber. Correspondingly, the second valve 12, the air duct 10, and the fan 13 form a second chamber. Figure 2 The airship also includes a second drying chamber 22 located in the upper part of the chamber, which is disposed on the wall of the air duct 10 of the second chamber. The second drying chamber 22 includes a second desiccant, a second heating film, and a second drying valve cover covering the second drying chamber. The airship also includes a drying push rod 23 disposed outside the air duct 10, and a drying connecting rod 24 connecting the first drying valve cover and the second drying valve cover respectively. The drying push rod 23 drives the first drying valve cover and the second drying valve cover through the drying connecting rod 24 in response to the control signal transmitted by the controller.

[0074] Because of the temperature difference between the air inside the auxiliary airbag and the ambient air, moisture in the air condenses inside the airbag during inflation and deflation, making it difficult to expel. Prolonged accumulation can affect the safe operation of the auxiliary airbag. This implementation utilizes an integrated fan, first valve, and second valve structure on the ductwork. Two symmetrical drying chambers are set on the walls of the upper and lower chambers of the ductwork. By controlling the fan, first valve, second valve, first drying valve cover, and second drying valve cover, the absorption and expulsion of moisture from the air inside the auxiliary airbag are achieved, thus realizing automatic dehumidification and dehumidification of the gas inside the airbag. Specifically, with the first and second valves closed, the air inside the airbag is automatically dehumidified by controlling the fan, first drying valve cover, and second drying valve cover; or the desiccant in each drying chamber is dried and dehumidified by controlling the fan, first drying valve cover, second drying valve cover, first valve, and second valve.

[0075] In a specific example, the auxiliary airbag is described in several operating modes, including a static operating mode, an inflation mode, an exhaust mode, a dehumidification mode, and a desiccant dehumidification mode.

[0076] like Figure 3 The diagram shows the static operating mode of the auxiliary airbag. In this mode, the differential pressure sensor of the pressure control structure senses that the air pressure in the auxiliary airbag is within the normal operating range, requiring neither inflation nor deflation. The first opening of the auxiliary airbag is closed to the outside. Specifically, the fan 13 stops, and the first and second valves 12 are closed by the valve motor 14 driving the valve linkage 16 through the reduction gearbox 15, which in turn drives the corresponding bevel gears. The drying valve covers of the first drying chamber 21 and the second drying chamber 22 are closed by the drying push rod 23, which in turn drives the drying linkage 24.

[0077] like Figure 4 The diagram shows the inflation mode of the auxiliary airbag. In this mode, inflation is required when the air pressure in the auxiliary airbag, sensed by the differential pressure sensor of the pressure control structure, is lower than the preset minimum low-pressure threshold for safe operation of the auxiliary airbag. Specifically, the fan 13 rotates forward, and the valve motor 14 drives the reduction gearbox 15 to control the valve linkage 16. The first and second bevel gears open the first and second valves 12 respectively, allowing ambient air to fill the auxiliary airbag through the first valve, fan 13, and second valve 12. The drying valve covers of the first drying chamber 21 and the second drying chamber 22 are closed by the drying push rod 23 via the drying linkage 24.

[0078] In the auxiliary airbag deflation mode, when the differential pressure sensor of the pressure control structure senses that the air pressure inside the auxiliary airbag exceeds the preset maximum high-pressure threshold for safe operation, deflation is required. Specifically, the fan reverses direction, the valve motor drives the reduction gearbox to control the valve linkage, and the first and second bevel gears open the first and second valves respectively. Air inside the airbag is discharged through the second valve, the fan, and the first valve. The drying valve covers of the first and second drying chambers are closed by the drying push rod driven by the drying linkage.

[0079] like Figure 5 The diagram shows the dehumidification mode of the auxiliary airbag. In this mode, the differential pressure sensor of the pressure control structure senses that the air pressure in the auxiliary airbag is within the normal operating range, requiring neither inflation nor deflation. Specifically, the first and second valves 12 are closed by the valve motor 14 driving the valve linkage 16 via the reduction gearbox 15, which in turn drives the corresponding bevel gear. The fan 13 rotates forward or reverse, and the drying valve covers of the first drying chamber 21 and the second drying chamber 22 are opened by the drying push rod 23 via the drying linkage 24. For example, when the fan rotates in reverse, the air in the airbag enters from the first drying chamber 21, is dried by the first desiccant in the first drying chamber 21, passes through the fan to the second drying chamber 22, is dried by the second desiccant in the second drying chamber 22, and is then discharged. In this way, the air in the airbag circulates through the first and second desiccants to remove moisture from the air. When the fan rotates forward, the air in the airbag enters from the second drying chamber and exits from the first drying chamber to remove moisture from the air in the airbag.

[0080] In the desiccant dehumidification mode of the auxiliary airbag, the differential pressure sensor of the pressure control structure senses that the air pressure in the auxiliary airbag is within the normal operating range, requiring neither inflation nor deflation. Specifically, when the first and second valves are driven by a set of linked actuators, the valve motor drives the valve linkage through the reduction gearbox to close the first and second valves via corresponding bevel gears. The fan stops, and the drying valve covers of the first and second drying chambers are closed by the drying push rod via the drying linkage. The heating film in each drying chamber heats the desiccant, causing the moisture absorbed by the desiccant to evaporate into water vapor, which slowly leaks into the external environment through the first valve. When the first and second valves are driven by independent actuators, the first valve is opened, directly discharging the water vapor into the external environment, thereby removing moisture from the desiccant.

[0081] In an optional embodiment, the auxiliary airbag includes multiple sub-airbags; the pressure control structure includes sub-control structures corresponding to each sub-airbag, and each sub-control structure is disposed at the bottom of the corresponding sub-airbag.

[0082] In this embodiment, the pressure control structures of the multiple sub-airbags of the auxiliary airbag are respectively set, for example, respectively set at the bottom of each sub-airbag. The differential pressure sensor measures the pressure difference between the internal air pressure of the corresponding sub-airbag and the ambient air pressure, so that the controller can control the pressure adjustment structure according to the air pressure of the airbag, for example, controlling the fan, the first valve and the second valve to inflate or deflate the auxiliary airbag.

[0083] In another alternative embodiment, the auxiliary airbag includes multiple sub-airbags; the pressure control structure includes sub-control structures corresponding to each sub-airbag; the aerostat includes a control console, and each sub-control structure is disposed within the control console.

[0084] In this embodiment, the pressure control structures of the multiple sub-airbags of the auxiliary airbag are centrally located, for example, in a control console at the bottom of the airship, for ease of installation and maintenance. Each differential pressure sensor measures the pressure difference between the internal air pressure of its corresponding sub-airbag and the ambient air pressure, allowing the corresponding controller to adjust the pressure regulation structure based on the airbag pressure. For example, this control could be achieved by controlling a fan, a first valve, and a second valve to inflate or deflate the auxiliary airbag.

[0085] Based on the above embodiments, such as airships Figure 6 As shown, this application also provides a wind power generation system, including the airship of the above embodiment and the wind turbine mounted on the airship.

[0086] This embodiment of the wind power generation system integrates the first valve, the second valve, and the wind turbine of the pressure regulating structure of the auxiliary airbag of the airship into a single unit within the duct. The duct is then placed inside the auxiliary airbag. The pressure regulating structure operates in response to the control of a controller located outside the auxiliary airbag, thereby inflating or deflating the auxiliary airbag. This embodiment, by integrating the pressure regulating structure within the auxiliary airbag, features a compact structure, high pressure, good airtightness, convenient installation, good maintainability, and good protection, significantly improving the stability and reliability of wind power generation systems installed at high altitudes.

[0087] Based on the wind power generation system of the above embodiments, this application also provides a pressure control method applied to a wind power generation system. The wind power generation system includes an airship and a wind turbine mounted on the airship. The airship includes an auxiliary airbag, a pressure regulating structure disposed inside the auxiliary airbag, and a pressure control structure disposed outside the auxiliary airbag. The pressure regulating structure includes a duct pipe, a first valve disposed at one end of the duct pipe, a second valve disposed at the other end of the duct pipe, and a fan disposed in the duct pipe between the first valve and the second valve. The pressure control structure includes a controller and a differential pressure sensor. The pressure control method includes:

[0088] The controller of the pressure control structure controls the fan, the first valve, and the second valve to vent or inflate the auxiliary airbag based on the air pressure of the airbag sensed by the differential pressure sensor.

[0089] This embodiment addresses the integrated design of the pressure regulation structure for the auxiliary airbag of a wind power generation system's aerostat. Specifically, the first valve, second valve, and wind turbine of the pressure regulation structure are integrated within a duct, which is then placed inside the auxiliary airbag. A controller located on the outside of the auxiliary airbag controls the operation of the first valve, second valve, and wind turbine, thereby inflating or deflating the auxiliary airbag. This embodiment, by integrating the pressure regulation structure within the auxiliary airbag, features a compact structure, high pressure, excellent airtightness, convenient installation, good maintainability, and strong protection, significantly improving the stability and reliability of wind power generation systems installed at high altitudes.

[0090] In one specific embodiment, the controller of the pressure control structure, based on the air pressure sensed by the differential pressure sensor, controls the fan, the first valve, and the second valve to deflate or inflate the auxiliary airbag, further comprising:

[0091] If the air pressure in the bladder is greater than a preset first threshold, the controller controls the first and second valves to open and controls the fan to reverse to discharge the gas in the auxiliary airbag until the air pressure in the bladder is less than or equal to the second threshold.

[0092] If the air pressure in the bag is less than a preset third threshold, the controller controls the first and second valves to open and controls the fan to rotate forward to fill the auxiliary air bag with ambient air until the air pressure in the bag is greater than or equal to a fourth threshold.

[0093] In this embodiment, different pressure thresholds are set for each auxiliary airbag according to its design requirements, such as a maximum high-pressure threshold and a minimum high-pressure threshold, as well as a maximum low-pressure threshold and a minimum low-pressure threshold. Specifically, the controller acquires the airbag pressure sensed by the differential pressure sensor in real time and compares the airbag pressure with the maximum high-pressure threshold and the minimum low-pressure threshold to inflate and deflate the auxiliary airbag.

[0094] Specifically, when the air pressure in the bladder is greater than the maximum high pressure threshold, it indicates that the auxiliary air bladder needs to expel gas to reduce the air pressure inside the bladder. At this time, the controller controls the fan to reverse and opens the first valve and the second valve to exhaust the gas in the auxiliary air bladder. At the same time, the air pressure in the bladder is monitored in real time. When the air pressure in the bladder is less than or equal to the minimum high pressure threshold, the gas is no longer exhausted, and the fan, the first valve and the second valve are closed.

[0095] Similarly, when the air pressure in the bladder is less than the minimum low pressure threshold, it indicates that the corresponding auxiliary air bladder needs to be inflated to increase the air pressure inside the bladder. At this time, the controller controls the fan to rotate forward, opens the first valve and the second valve to inflate the auxiliary air bladder, and monitors the air pressure in the bladder in real time. When the air pressure in the bladder is greater than or equal to the maximum low pressure threshold, inflation stops, the first valve and the second valve are closed first, and then the fan is turned off.

[0096] This embodiment pre-sets pressure thresholds for different airbags. A controller compares the airbag pressure sensed by a differential pressure sensor with these thresholds. Depending on the situation, the airbag is inflated or deflated using a fan, a first valve, and a second valve integrated into the air duct within the auxiliary airbag. This embodiment integrates the pressure regulation structure within the auxiliary airbag, resulting in a compact structure, high pressure, good airtightness, convenient installation, good maintainability, and good protection. This significantly improves the stability and reliability of wind power generation systems installed at high altitudes.

[0097] In an optional embodiment, the first valve, the duct pipe, and the fan form a first cavity. The aerostat further includes a first drying chamber disposed on the wall of the duct pipe of the first cavity, the first drying chamber including a first desiccant, a first heating film, and a first drying valve cover covering the first drying chamber; the second valve, the duct pipe, and the fan form a second cavity. The aerostat further includes a second drying chamber disposed on the wall of the duct pipe of the second cavity, the second drying chamber including a second desiccant, a second heating film, and a second drying valve cover covering the second drying chamber; the aerostat further includes a drying push rod disposed outside the duct pipe, and a drying connecting rod respectively connecting the first drying valve cover and the second drying valve cover, the drying push rod driving the first drying valve cover and the second drying valve cover through the drying connecting rod; the control method further includes:

[0098] In static operating mode, the controller controls the first and second valves to close, controls the fan to close, and controls the first and second drying valve covers to close.

[0099] In dehumidification mode, the controller controls the first and second valves to close, controls the fan to reverse, and controls the first and second drying valve covers to open, so that the gas in the auxiliary airbag passes sequentially through the first desiccant in the first drying chamber and the second desiccant in the second drying chamber to dehumidify the gas in the auxiliary airbag.

[0100] In the desiccant dehumidification mode, the controller controls the first and second valves to close, controls the fan to close, controls the first and second drying valve covers to close, controls the first heating film to heat the first desiccant, and controls the second heating film to heat the second desiccant, so that the moisture in the first and second desiccants evaporates.

[0101] Considering the temperature difference between the air inside the auxiliary airbag and the ambient air, moisture in the air condenses inside the airbag during inflation and deflation, making it difficult to expel. Prolonged accumulation can affect the safe operation of the auxiliary airbag. This embodiment is based on an integrated fan, first valve, and second valve structure on the ductwork. Two symmetrical drying chambers are set on the walls of the upper and lower chambers of the ductwork. By controlling the fan, first valve, second valve, first drying valve cover, and second drying valve cover, the absorption and expulsion of moisture from the air inside the auxiliary airbag are achieved, thus realizing automatic dehumidification and dehumidification of the gas inside the airbag. Specifically, with the first and second valves closed, the air inside the airbag is automatically dehumidified by controlling the fan, first drying valve cover, and second drying valve cover; or the desiccant in each drying chamber is dried and dehumidified by controlling the fan, first drying valve cover, second drying valve cover, first valve, and second valve. Specific implementation details of this embodiment are found in the foregoing embodiments and will not be repeated here.

[0102] This invention addresses existing problems by providing an airship, wind power generation system, and control method with a built-in pressure regulation structure. The airship integrates the first and second valves of its pressure regulation structure with the wind turbine within a duct, which is then placed inside an auxiliary airbag. The pressure regulation structure responds to the control of a controller located outside the auxiliary airbag, allowing for the deflation or inflation of the airbag. This embodiment integrates the pressure regulation structure within the auxiliary airbag, resulting in a compact structure, high pressure, good airtightness, convenient installation, good maintainability, and good protection. This overcomes the problems of existing technologies, significantly improving the stability and reliability of high-altitude wind power generation systems, and has practical application value.

[0103] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. An airship based on a built-in pressure regulation structure, characterized in that, It includes an auxiliary airbag, a pressure regulating structure disposed inside the auxiliary airbag, and a pressure control structure disposed outside the auxiliary airbag, wherein, The pressure regulating structure includes a duct pipe, a first valve disposed at one end of the duct pipe, a second valve disposed at the other end of the duct pipe, and a fan disposed in the duct pipe between the first valve and the second valve. The pressure control structure includes a controller and a differential pressure sensor. The controller is used to control the fan, the first valve and the second valve to vent or inflate the auxiliary airbag according to the air pressure of the airbag sensed by the differential pressure sensor. The first valve, the air duct, and the fan form a first cavity. The air levitation device also includes a first drying chamber disposed on the wall of the air duct of the first cavity. The first drying chamber includes a first desiccant, a first heating film, and a first drying valve cover covering the first drying chamber. The second valve, the air duct, and the fan form a second cavity. The air levitation device also includes a second drying chamber disposed on the wall of the air duct of the second cavity. The second drying chamber includes a second desiccant, a second heating film, and a second drying valve cover covering the second drying chamber. The airship also includes a drying push rod disposed outside the air duct and a drying connecting rod connected to the first drying valve cover and the second drying valve cover respectively. The drying push rod drives the first drying valve cover and the second drying valve cover through the drying connecting rod in response to the command of the controller.

2. The airship according to claim 1, characterized in that, The pressure regulating structure also includes a valve driving device disposed outside the air duct, used to drive the first valve and the second valve.

3. The airship according to claim 2, characterized in that, The pressure regulating structure also includes a valve motor, a gearbox, a valve connecting rod, a first bevel gear, and a second bevel gear disposed outside the air duct. The valve connecting rod includes a first end and a second end. The first end of the valve connecting rod drives the first valve through the first bevel gear, and the second end of the valve connecting rod drives the second valve through the second bevel gear. The valve motor drives the valve connecting rod through the gearbox. or, The pressure regulating structure further includes a first valve driving device and a second valve driving device disposed outside the air duct, wherein the first valve driving device includes a first valve motor for driving the first valve, and the second valve driving device includes a second valve motor for driving the second valve.

4. The airship according to claim 1, characterized in that, The first drying chamber located in the first cavity and the second drying chamber located in the second cavity are symmetrically arranged with respect to the fan.

5. The airship according to claim 1, characterized in that, The auxiliary airbag includes multiple sub-airbags; The pressure control structure includes sub-control structures corresponding to each sub-airbag, and each sub-control structure is located at the bottom of the corresponding sub-airbag; or The pressure control structure includes sub-control structures corresponding to each sub-airbag, and the aerostat includes a control console, with each sub-control structure disposed within the control console.

6. The airship according to claim 1, characterized in that, The auxiliary airbag includes a first opening, the first opening is provided with a first flange, and the first flange includes a first mounting part. The duct also includes a second flange disposed near the first valve, the second flange including a second mounting portion for fixing to the first mounting portion.

7. A wind power generation system, characterized in that, It includes an airship as described in any one of claims 1-6, and a wind turbine mounted on the airship.

8. A control method applied to the wind power generation system as described in claim 7, characterized in that, include: The controller of the pressure control structure controls the fan, the first valve and the second valve to vent or inflate the auxiliary airbag based on the air pressure of the airbag sensed by the differential pressure sensor; The control method further includes: In static working mode, the controller controls the first and second valves to close, controls the fan to close, and controls the drying push rod to drive the drying connecting rod to close the first and second drying valve covers. In dehumidification mode, the controller controls the first and second valves to close, controls the fan to reverse, and controls the drying push rod to drive the drying connecting rod to open the first and second drying valve covers, so that the gas in the auxiliary airbag passes sequentially through the first desiccant in the first drying chamber and the second desiccant in the second drying chamber to dehumidify the gas in the auxiliary airbag.

9. The control method according to claim 8, characterized in that, The control method further includes: in the desiccant dehumidification mode, the controller controls the first valve and the second valve to close, controls the fan to close, controls the drying push rod to drive the drying connecting rod to close the first drying valve cover and the second drying valve cover, controls the first heating film to heat the first desiccant and controls the second heating film to heat the second desiccant, so that the moisture in the first desiccant and the second desiccant evaporates.

10. The control method according to claim 8, characterized in that, The pressure regulating structure further includes a valve driving device disposed outside the air duct, used to drive the first valve and the second valve; the controller of the pressure control structure controls the fan, the first valve and the second valve to deflate or inflate the auxiliary airbag according to the air pressure of the airbag sensed by the differential pressure sensor, further including: If the air pressure in the bladder is greater than a preset first threshold, the controller controls the valve driving device to open the first and second valves and controls the fan to reverse to discharge the gas in the auxiliary airbag until the air pressure in the bladder is less than or equal to the second threshold. If the air pressure in the bladder is less than a preset third threshold, the controller controls the valve driving device to open the first and second valves and controls the fan to rotate forward to fill the auxiliary air bladder with ambient air until the air pressure in the bladder is greater than or equal to the fourth threshold.

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