Aerostat with built-in pressure regulation, wind power system and control method

Abstract

The application discloses a kind of built-in pressure regulating structure's aerostat, wind power generation system and control method, wherein the aerostat of an embodiment includes auxiliary air bag, pressure regulating structure arranged inside auxiliary air bag, and pressure control structure arranged outside auxiliary air bag, wherein, pressure regulating structure includes air duct pipe, first valve arranged at one end of air duct pipe, second valve arranged at the other end of air duct pipe, and fan arranged in air duct pipe between first valve and second valve;Pressure control structure includes controller and differential pressure sensor, and controller is used to control fan, first valve and second valve to exhaust or inflate auxiliary air bag according to the air pressure sensed by differential pressure sensor.The embodiment provided by the application has the characteristics of compact structure and good air tightness by integrating the pressure regulating structure of the aerostat inside the auxiliary air bag, significantly improves the stability and reliability of the aerostat, and has practical application value.

Description

[0001] The present application is a divisional application of the Chinese Patent Application No. 202510403648.1, filed on April 1, 2025, entitled "Floating Aerostat with Built-in Pressure Regulating Structure, Wind Power Generation System and Control Method". TECHNICAL FIELD

[0002] The present application relates to the field of wind power generation, in particular to a floating aerostat with built-in pressure regulating structure, wind power generation system and control method. BACKGROUND

[0003] The high-altitude wind power generation system brings the wind turbine to 500m-10000m high altitude through the floating platform, and utilizes the advantages of stable high-altitude wind energy, large wind speed, large power generation, stable output power, etc., and is a wind power generation product with broad application prospects.

[0004] The pressure regulating device of the floating platform of the high-altitude wind power generation system is composed of a fan assembly and a valve, wherein the fan assembly is composed of a fan, a check valve and a flange plate. When installed, a hole is opened at the corresponding position of the capsule, and the fan assembly and the valve assembly are installed on the capsule through flange connection. There are the following problems:

[0005] 1. Fan flow and static pressure loss: the fan assembly uses a check valve, which is sealed by spring force when the check valve is not started. After the fan is started, the airflow will push open the check valve cover, inflate the air bag, and the airflow needs to overcome the spring force of the check valve, resulting in loss of static pressure and flow of the fan.

[0006] 2. Poor sealing, fast leakage, and inability to adapt to high-pressure ring-wing pressure regulation: in order to reduce the loss of fan static pressure and flow, the spring force of the check valve cannot be set too high, resulting in poor sealing performance of the check valve. Under high pressure, the gas leakage is too fast, and it is only suitable for pressure regulation of capsules with pressure below 1000Pa, and cannot be used for pressure regulation of capsules with pressure exceeding 1000Pa.

[0007] 3. Split structure, inconvenient installation: the fan assembly and the valve assembly are independent structures, and are installed by flange plate and capsule connection. Two flange plates need to be installed separately during assembly, which is relatively complex.

[0008] 4. No dehumidification structure, the water accumulated by condensation in the capsule cannot be automatically discharged, and needs to be manually discharged after recovery and anchoring, which is complex to operate. SUMMARY

[0009] In order to solve at least one of the above problems, the first embodiment of the present application provides a floating aerostat based on built-in pressure regulating structure, which comprises an auxiliary air bag, a pressure regulating structure arranged inside the auxiliary air bag, and a pressure control structure arranged outside the auxiliary air bag, wherein,

[0010] The pressure regulating 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 between the first valve and the second valve;

[0011] The pressure control structure comprises a controller and a pressure difference sensor, and the controller is configured to control the fan, the first valve and the second valve to exhaust or inflate the auxiliary air bag according to the air pressure of the air bag sensed by the pressure difference sensor.

[0012] For example, in the airship provided by some embodiments of the present application, the pressure regulating structure further comprises a valve motor, a reduction box, a valve connecting rod, a first bevel gear and a second bevel gear arranged outside the air duct pipe, wherein

[0013] The valve connecting rod comprises 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;

[0014] The valve motor drives the valve connecting rod through the reduction box.

[0015] For example, in the airship provided by some embodiments of the present application, the pressure regulating structure further comprises a first valve driving device and a second valve driving device arranged outside the air duct pipe, wherein

[0016] The first valve driving device comprises a first valve motor driving the first valve;

[0017] The second valve driving device comprises a second valve motor driving the second valve.

[0018] For example, in the airship provided by some embodiments of the present application, the first valve, the air duct pipe and the fan form a first cavity, and the airship further comprises a first drying chamber arranged on the pipe wall of the air duct pipe of the first cavity, the first drying chamber comprising 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 pipe and the fan form a second cavity, and the airship further comprises a second drying chamber arranged on the pipe wall of the air duct pipe of the second cavity, the second drying chamber comprising a second desiccant, a second heating film and a second drying valve cover covering the second drying chamber;

[0020] The aerostat further comprises a dry push rod arranged outside the air duct pipe, and a dry connecting rod connected with the first dry valve cover and the second dry valve cover respectively, the dry push rod drives the first dry valve cover and the second dry valve cover through the dry connecting rod.

[0021] For example, in the aerostat provided by some embodiments of the present application, the auxiliary air bag comprises a plurality of sub air bags.

[0022] The pressure control structure comprises sub control structures corresponding to the sub air bags respectively, and each sub control structure is arranged at the bottom of the corresponding sub air bag.

[0023] For example, in the aerostat provided by some embodiments of the present application, the auxiliary air bag comprises a plurality of sub air bags.

[0024] The pressure control structure comprises sub control structures corresponding to the sub air bags respectively, and the aerostat comprises a control console, and each sub control structure is arranged in the control console.

[0025] For example, in the aerostat provided by some embodiments of the present application, the auxiliary air bag comprises a first opening, the first opening is provided with a first flange plate, and the first flange plate comprises a first mounting portion.

[0026] The air duct pipe further comprises a second flange plate arranged on the side close to the first valve, and the second flange plate comprises a second mounting portion for fixing with the first mounting portion.

[0027] The second embodiment of the present application provides a wind power generation system, comprising the aerostat as described in the first embodiment and a wind power generator carried on the aerostat.

[0028] The third embodiment of the present application provides a control method applied to the 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 exhaust or inflate the auxiliary air bag according to the air pressure of the air bag sensed by the pressure difference sensor.

[0030] For example, in the control method provided by some embodiments of the present application, the controller of the pressure control structure controls the fan, the first valve and the second valve to exhaust or inflate the auxiliary air bag according to the air pressure of the air bag sensed by the pressure difference sensor, which further comprises:

[0031] If the air pressure of the air bag is greater than a first threshold value, the controller controls the first valve and the second valve to open, and controls the fan to reverse to exhaust the gas in the auxiliary air bag until the air pressure of the air bag is less than or equal to a second threshold value.

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

[0033] For example, in the control method provided by some embodiments of the present application, the first valve, the air duct pipe and the fan form a first cavity, the airship further comprises a first drying chamber arranged on the pipe wall of the air duct pipe in the first cavity, the first drying chamber comprises a first drying agent, a first heating film and a first drying valve cover covering the first drying chamber; the second valve, the air duct pipe and the fan form a second cavity, the airship further comprises a second drying chamber arranged on the pipe wall of the air duct pipe in the second cavity, the second drying chamber comprises a second drying agent, a second heating film and a second drying valve cover covering the second drying chamber; the airship further comprises a drying push rod arranged outside the air duct pipe and a drying connecting rod respectively connected to the first drying valve cover and the second drying valve cover, the drying push rod drives the first drying valve cover and the second drying valve cover through the drying connecting rod, and the control method further comprises:

[0034] In the static working mode, the controller controls the first valve and the second valve to close, controls the fan to close, and controls the first drying valve cover and the second drying valve cover to close.

[0035] In the dehumidification mode, the controller controls the first valve and the second valve to close, controls the fan to reverse, controls the first drying valve cover and the second drying valve cover to open, so that the gas in the auxiliary air bag passes through the first drying agent of the first drying chamber and the second drying agent of the second drying chamber in sequence to perform dehumidification operation on the gas in the auxiliary air bag.

[0036] In the drying agent dehumidification mode, the controller controls the first valve and the second valve to close, controls the fan to close, controls the first drying valve cover and the second drying valve cover to close, controls the first heating film to heat the first drying agent, and controls the second heating film to heat the second drying agent, so that the moisture of the first drying agent and the second drying agent evaporates.

[0037] One embodiment of the present application provides an airship based on a built-in pressure regulating structure, comprising an auxiliary air bag, a pressure regulating structure arranged inside the auxiliary air bag, and a pressure control structure arranged outside the auxiliary air bag, wherein,

[0038] The pressure regulating 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 between the first valve and the second valve.

[0039] The pressure control structure comprises a controller and a pressure difference sensor, the controller being configured to control the fan, the first valve and the second valve to exhaust or inflate the auxiliary air bag according to the air pressure of the air bag sensed by the pressure difference sensor;

[0040] The first valve, the air duct and the fan form a first cavity, and the airship further comprises a first drying chamber arranged on the wall of the air duct of the first cavity, the first drying chamber comprising a first drying agent, 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, and the airship further comprises a second drying chamber arranged on the wall of the air duct of the second cavity, the second drying chamber comprising a second drying agent, a second heating film and a second drying valve cover covering the second drying chamber;

[0042] The airship further comprises a drying push rod arranged 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 being configured to drive the first drying valve cover and the second drying valve cover through the drying connecting rod according to the instruction of the controller.

[0043] For example, in the airship provided by some embodiments of the present application, the pressure regulating structure further comprises a valve driving device arranged outside the air duct and configured to drive the first valve and the second valve.

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

[0045] One embodiment of the present application further provides a wind power generation system, comprising the airship provided by the foregoing embodiments and a wind power generator mounted on the airship.

[0046] One embodiment of the present application further provides a control method applied to the wind power generation system provided by the foregoing embodiments, comprising:

[0047] The controller of the pressure control structure controls the fan, the first valve and the second valve to exhaust or inflate the auxiliary air bag according to the air pressure of the air bag sensed by the pressure difference sensor;

[0048] The control method further comprises:

[0049] In the static working mode, the controller controls the first valve and the second valve to be closed, controls the fan to be closed, and controls the drying push rod to drive the drying connecting rod to close the first drying valve cover and the second drying valve cover;

[0050] In the dehumidification mode, the controller controls the first valve and the second valve to be closed, controls the fan to be reversed, controls the dry push rod to drive the dry connecting rod to open the first dry valve cover and the second dry valve cover, so that the gas of the auxiliary air bag passes through the first desiccant of the first dry chamber and the second desiccant of the second dry chamber in sequence to perform a dehumidification operation on the gas of the auxiliary air bag.

[0051] For example, in the control method provided by some embodiments of the present application, the control method further includes: in the desiccant dehumidification mode, the controller controls the first valve and the second valve to be closed, controls the fan to be closed, controls the dry push rod to drive the dry connecting rod to close the first dry valve cover and the second dry 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 of the first desiccant and the second desiccant is evaporated.

[0052] The beneficial effects of the present application are as follows:

[0053] The present application aims at the existing problems, and provides a floating device with a built-in pressure regulating structure, a wind power generation system and a control method. The first valve, the second valve and the fan of the pressure regulating structure of the floating device are integrally arranged in the air duct pipe, and the air duct pipe is arranged in the auxiliary air bag. The pressure regulating structure is controlled by the controller of the pressure control structure arranged outside the auxiliary air bag to realize the exhaust or inflation of the auxiliary air bag. The pressure regulating structure is integrally arranged in the auxiliary air bag in the embodiment, and has the characteristics of compact structure, high pressure, good air tightness, convenient installation, good maintainability and good protection, thereby making up for the problems in the prior art, significantly improving the stability and reliability of the wind power generation system arranged in the high altitude, and having practical application value. BRIEF DESCRIPTION OF DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0055] Figure 1 A structural block diagram of the floating device according to an embodiment of the present application is shown;

[0056] Figure 2 A structural schematic diagram of the air duct pipe according to an embodiment of the present application is shown;

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

[0058] Figure 4 A schematic diagram showing the inflation mode of one embodiment of the present application;

[0059] Figure 5 A schematic diagram showing the dehumidification mode of one embodiment of the present application;

[0060] Figure 6 A structural block diagram showing the wind power generation system of one embodiment of the present application. DETAILED DESCRIPTION

[0061] In order to more clearly illustrate the present application, the present application will be further described below with reference to the preferred embodiments and the accompanying drawings. Like components are denoted by like reference numerals in the drawings. It should be understood by those skilled in the art that the specific descriptions below are illustrative rather than limiting, and should not limit the scope of protection of the present application.

[0062] In view of the problems in the prior art, one embodiment of the present application provides a floating machine based on a built-in pressure regulating structure, comprising an auxiliary air bag, a pressure regulating structure arranged inside the auxiliary air bag, and a pressure control structure arranged outside the auxiliary air bag, wherein,

[0063] The pressure regulating 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 between the first valve and the second valve;

[0064] The pressure control structure comprises a controller and a pressure difference sensor, and the controller is used to control the fan, the first valve and the second valve to exhaust or inflate the auxiliary air bag according to the air pressure of the air bag sensed by the pressure difference sensor.

[0065] In the present embodiment, as shown in Figure 1 A structural block diagram of the floating machine of the present application is shown, which comprises a main air bag (not shown in the figure) and an auxiliary air bag, such as a secondary air bag, a tail air bag and a ring air bag, wherein the main air bag is filled with helium, used to provide buoyancy and mounting support for the wind turbine of the wind power generation system when the floating machine is applied to the wind power generation system; the other air bags are auxiliary air bags filled with air, wherein the secondary air bag is used to maintain the shape of the main air bag, and the tail air bag and the ring air bag are used to improve the air stability performance and the point setting ability of the floating machine. Each air bag is a gas-tight independent air bag, and the tail air bag comprises four air bags arranged at the tail of the main air bag at an angle of 90°; the ring air bag comprises four air bags fixed at the top end of the tail air bag, respectively.

[0066] In the present embodiment, as shown in Figure 2As shown in the partial view of the auxiliary air bag, the auxiliary air bag 30 includes a first opening 31 provided with a first flange plate 32 including a first mounting portion 321. A pressure regulating structure is arranged inside the first opening 31 of the auxiliary air bag, including an air duct pipe 10, a first valve 11 arranged at one end of the air duct pipe 10, a second valve 12 arranged at the other end of the air duct pipe 10, and a fan 13 arranged in the air duct pipe 10 between the first valve 11 and the second valve 12. The fan 13 in the air duct pipe 10 acts in response to a controller of an external pressure control structure according to the air pressure sensed by a differential pressure sensor, for example, the fan 13 reverses or forwards according to the voltage loaded, while the first valve 11 and the second valve 12 open or close in response to the control of the controller, so as to deflate or inflate the auxiliary air bag through the fan 13, the first valve 11 and the second valve 12 integrated in the air duct pipe 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 with the air bag body of the auxiliary air bag to measure the pressure difference between the air pressure inside the air bag body of the auxiliary air bag and the ambient air pressure; the pressure control structure of the embodiment is arranged on a circuit board or a control board outside the auxiliary air bag. Meanwhile, in the embodiment, the air duct pipe 10 further includes a second flange plate 19 arranged near the side of the first valve 11, the second flange plate 19 includes a second mounting portion 191 for fixing with the first mounting portion 321. That is, the air duct pipe 10 is mounted and fixed with the first mounting portion 321 of the first flange plate 32 of the outlet position of the first opening 31 of the auxiliary air bag 30 through the second mounting portion 191 of the second flange plate 19. Compared with the related art, in which a fan assembly and a valve assembly are used in the auxiliary air bag to deflate or inflate, and flange plates are used for installation according to different structures, the first valve, the second valve and the fan are integrated in the air duct pipe in the embodiment, which effectively simplifies the pressure regulating structure, and has the characteristics of convenient installation and maintenance, effectively improves the stability and assembly performance of the whole airship, and effectively reduces the manufacturing cost of the airship.

[0067] In one specific embodiment, as shown in Figure 2 the pressure regulating structure further includes a valve motor 14, a reduction box 15, a valve connecting rod 16, a first bevel gear 17 and a second bevel gear 18 arranged outside the air duct pipe, wherein 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 box 15.

[0068] In the embodiment, considering the overall manufacturing cost and control requirements of the aerostat, a set of linkage action devices are arranged outside the air duct 10 to synchronously drive the actions of the first valve 11 and the second valve 12. Specifically, the first valve 11 is connected with the first bevel gear 17, i.e. the opening and closing of the first valve 11 is driven by the first bevel gear 17; similarly, the second valve 12 is connected with the second bevel gear 18, i.e. the opening and closing of the second valve 12 is driven by the second bevel gear 18; and the two ends of the valve connecting rod 16 are connected with the first bevel gear 17 and the second bevel gear 18 respectively, the valve connecting rod is connected with the reduction box 15, and the reduction box 15 is driven by the valve fan 14.

[0069] In actual working process, when the pressure difference sensor of the pressure control structure arranged outside the auxiliary air bag senses the air pressure of the bag body, the controller transmits control signals to the fan 13 and the valve motor 14 according to the sensed air pressure of the bag body. For example, when the air pressure of the bag body is greater than a first threshold value, for example, greater than a high pressure maximum threshold value for safe operation of the auxiliary air bag, the controller sends an exhaust signal to the fan 13 to make the fan reverse, sends a valve opening signal to the valve motor 14, the valve motor 14 drives the reduction box 15 to control the action of the valve connecting rod 16, opens the first valve 11 and the second valve 12 through the first bevel gear 17 and the second bevel gear 18 respectively, and the air in the bag body is exhausted through the second valve 12, the fan 13 and the first valve 11 until the air pressure of the bag body is less than or equal to a second threshold value, for example, less than or equal to a high pressure minimum threshold value for safe operation of the auxiliary air bag; the controller sends a closing signal to the fan 13 to make the fan stop, sends a valve closing signal to the valve motor 14, and the valve motor 14 drives the reduction box 15 to control the action of the valve connecting rod 16 to close the first valve 11 and the second valve 12 through the first bevel gear 17 and the second bevel gear 18 respectively.

[0070] Similarly, when the air pressure of the bag body is less than a low pressure minimum threshold value for safe operation of the auxiliary air bag, the controller sends an inflation signal to the fan 13 to make the fan rotate in the positive direction, sends a valve opening signal to the valve motor 14, the valve motor 14 drives the reduction box 15 to control the action of the valve connecting rod 16, opens the first valve 11 and the second valve 12 through the first bevel gear 17 and the second bevel gear 18 respectively, and the ambient air is filled into the auxiliary bag body through the first valve 11, the fan 13 and the second valve 12 until the air pressure of the bag body is greater than or equal to a low pressure maximum threshold value for safe operation of the auxiliary air bag; the controller sends a closing signal to the fan 13 to make the fan stop, sends a valve closing signal to the valve motor 14, and the valve motor 14 drives the reduction box 15 to control the action of the valve connecting rod 16 to close the first valve 11 and the second valve 12 through the first bevel gear 17 and the second bevel gear 18 respectively.

[0071] To further finely control each valve, in an optional embodiment, the pressure regulating structure further comprises a first valve driving device and a second valve driving device arranged outside the air duct pipe, wherein the first valve driving device comprises a first valve motor driving the first valve; and the second valve driving device comprises a second valve motor driving the second valve.

[0072] In the present embodiment, by arranging two sets of action devices to respectively drive the first valve and the second valve, each set of action device comprises a valve motor to control the opening and closing of the corresponding valve in response to the control signal of the controller, thereby achieving independent control of each valve. For example, the first valve motor drives the connected reduction box to control the opening and closing of the first valve through bevel gears in response to the control signal, and the second valve motor drives the connected reduction box to control the opening and closing of the second valve through bevel gears in response to the control signal.

[0073] Considering that the condensed accumulated water in the auxiliary air bag cannot be automatically discharged, in an optional embodiment, as shown in Figure 2 , the first valve 11, the air duct pipe 10 and the fan 13 form a first cavity, i.e. the lower chamber in Figure 2 , the airship further comprises a first drying chamber 21 arranged on the pipe wall of the air duct pipe 10 of the first cavity, the first drying chamber 21 comprising 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 pipe 10 and the fan 13 form a second cavity, i.e. the upper chamber in Figure 2 , the airship further comprises a second drying chamber 22 arranged on the pipe wall of the air duct pipe 10 of the second cavity, the second drying chamber 22 comprising a second desiccant, a second heating film, and a second drying valve cover covering the second drying chamber; the airship further comprises a drying push rod 23 arranged outside the air duct pipe 10, and a drying connecting rod 24 respectively connecting the first drying valve cover and the second drying valve cover, the drying push rod 23 driving 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 exhaust mode of the auxiliary airbag, when the pressure difference sensor of the pressure control structure senses that the air pressure of the auxiliary airbag is greater than the pre-set maximum threshold of the high pressure for safe operation of the auxiliary airbag, exhaust is needed. Specifically, the fan reverses, the valve motor drives the reduction box to control the valve connecting rod to act, the first valve and the second valve are opened through the first bevel gear and the second bevel gear respectively, the air in the airbag is exhausted through the second valve, the fan and the first valve, and the drying valve cover of the first drying chamber and the second drying chamber is closed through the drying connecting rod driven by the drying push rod.

[0079] As shown in Figure 5 the drying mode of the auxiliary airbag, in this mode, the pressure difference sensor of the pressure control structure senses that the air pressure of the auxiliary airbag meets the normal working range, and neither inflation nor exhaust is needed. Specifically, the first valve and the second valve 12 are closed by the valve motor 14 through the reduction box 15 to drive the valve connecting rod 16 through the corresponding bevel gear, the fan 13 is forward or reverse, and the drying valve cover of the first drying chamber 21 and the second drying chamber 22 is opened through the drying connecting rod 24 driven by the drying push rod 23. For example, when the fan reverses, the air in the airbag enters the first drying chamber 21, is dried by the first drying agent in the first drying chamber 21, is sent to the second drying chamber 22 through the fan, is dried by the second drying agent in the second drying chamber 22, and is then exhausted. In this way, the air in the airbag is circulated through the first drying agent and the second drying agent to remove the moisture in the air. When the fan is forward, the air in the airbag enters the second drying chamber and is exhausted from the first drying chamber to remove the moisture in the air in the airbag.

[0080] In the drying agent drying mode of the auxiliary airbag, in this mode, the pressure difference sensor of the pressure control structure senses that the air pressure of the auxiliary airbag meets the normal working range, and neither inflation nor exhaust is needed. Specifically, when the first valve and the second valve are driven by a set of linkage action devices, the first valve and the second valve are closed by the valve motor through the reduction box to drive the valve connecting rod through the corresponding bevel gear, the fan is stopped, the drying valve cover of the first drying chamber and the second drying chamber is closed through the drying connecting rod driven by the drying push rod, and the heating film in each drying chamber heats the drying agent to evaporate the moisture absorbed by the drying agent into water vapor, which is slowly leaked to the external environment through the first valve. When the first valve and the second valve are driven by independent action devices respectively, the first valve is controlled to be opened, and the water vapor is directly exhausted to the external environment, thereby removing the moisture in the drying agent.

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

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

[0083] In another optional embodiment, the auxiliary airbag includes a plurality of sub-airbags; the pressure control structure includes sub-control structures respectively corresponding to each sub-airbag, and the airship includes a control console, and each sub-control structure is arranged in the control console.

[0084] In the embodiment, the pressure control structures of the plurality of sub-airbags of the auxiliary airbag are arranged in the control console at the bottom of the airship, which is convenient for installation and maintenance. Each pressure difference sensor measures the pressure difference between the internal air pressure of the corresponding sub-airbag and the ambient air pressure, so that the corresponding controller controls the pressure adjusting structure according to the airbag air pressure, for example, controls the fan, the first valve and the second valve to inflate or deflate the auxiliary airbag.

[0085] Based on the airship of the above-mentioned embodiments, as shown in Figure 6 The application also provides a wind power generation system, which includes the airship of the above-mentioned embodiments and the wind power generator carried on the airship.

[0086] The wind power generation system of the embodiment realizes the deflation or inflation of the auxiliary airbag by arranging the first valve, the second valve and the fan of the pressure adjusting structure of the auxiliary airbag of the airship in the air duct pipe and arranging the air duct pipe inside the auxiliary airbag. The pressure adjusting structure acts in response to the control of the controller of the pressure control structure arranged outside the auxiliary airbag. The embodiment integrates the pressure adjusting structure inside the auxiliary airbag, which has the characteristics of compact structure, high pressure, good air tightness, convenient installation, good maintainability and good protection, and significantly improves the stability and reliability of the wind power generation system arranged at high altitude.

[0087] Based on the wind power generation system of the above-mentioned embodiments, the application also provides a pressure control method applied to the wind power generation system. The wind power generation system includes an airship and a wind power generator carried on the airship. The airship includes an auxiliary airbag, a pressure adjusting structure arranged inside the auxiliary airbag, and a pressure control structure arranged outside the auxiliary airbag. The pressure adjusting structure includes 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 between the first valve and the second valve. The pressure control structure includes a controller and a pressure difference 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 exhaust or inflate the auxiliary air bag according to the air pressure sensed by the differential pressure sensor.

[0089] The embodiment is directed to the integrated setting of the pressure regulating structure of the auxiliary air bag of the aerostat of the wind power generation system, that is, the first valve, the second valve and the fan of the pressure regulating structure are integrally set in the air duct pipe, and the air duct pipe is set inside the auxiliary air bag, and the controller of the pressure control structure set outside the auxiliary air bag controls the action of the first valve, the second valve and the fan to realize the exhaust or inflation of the auxiliary air bag. The embodiment integrally sets the pressure regulating structure inside the auxiliary air bag, has the characteristics of compact structure, high pressure, good air tightness, convenient installation, good maintainability and good protection, and significantly improves the stability and reliability of the wind power generation system set in the high altitude.

[0090] In a specific embodiment, the controller of the pressure control structure controls 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 further comprises:

[0091] If the air pressure is greater than the first threshold value, the controller controls the first valve and the second valve to open and controls the fan to reverse to exhaust the gas in the auxiliary air bag until the air pressure is less than or equal to the second threshold value;

[0092] If the air pressure is less than the third threshold value, the controller controls the first valve and the second valve to open and controls the fan to rotate forward to inflate the ambient air into the auxiliary air bag until the air pressure is greater than or equal to the fourth threshold value.

[0093] In the embodiment, different air pressure threshold values are set for the design requirements of each auxiliary air bag, such as the high pressure maximum threshold value and the high pressure minimum threshold value, and the low pressure maximum threshold value and the low pressure minimum threshold value. Specifically, the controller obtains the air pressure sensed by the differential pressure sensor in real time, and compares the air pressure with the high pressure maximum threshold value and the low pressure minimum threshold value to realize the inflation and exhaust of the auxiliary air bag.

[0094] Specifically, when the air pressure is greater than the high pressure maximum threshold value, it indicates that the auxiliary air bag needs to exhaust to the outside to reduce the air pressure in the air bag, at this time the controller controls the fan to reverse, opens the first valve and the second valve to guide the gas in the auxiliary air bag to exhaust, and simultaneously detects the air pressure in real time, and when the air pressure is less than or equal to the high pressure minimum threshold value, the exhaust is stopped, and the fan, the first valve and the second valve are closed.

[0095] Similarly, when the bag pressure is less than the minimum threshold of low pressure, it indicates that the corresponding auxiliary air bag needs to be inflated to increase the air pressure in the bag, at this time the controller controls the fan to rotate forward, opens the first valve and the second valve to inflate the auxiliary air bag, and at the same time, the bag pressure is detected in real time. When the bag pressure is greater than or equal to the maximum threshold of low pressure, the inflation is stopped, the first valve and the second valve are closed, and then the fan is closed.

[0096] The embodiment sets the air pressure thresholds of different air bags in advance, compares the bag pressure sensed by the differential pressure sensor with the air pressure threshold through the controller, and inflates or deflates the air bag through the fan, the first valve and the second valve arranged in the auxiliary air bag according to different situations. The pressure regulating structure is integrally arranged in the auxiliary air bag, which has the characteristics of compact structure, high pressure, good air tightness, convenient installation, good maintainability and good protection, and significantly improves the stability and reliability of the wind power generation system arranged in the high altitude.

[0097] In an optional embodiment, the first valve, the air duct and the fan form a first cavity, and the airship further comprises a first drying chamber arranged on the pipe wall of the air duct of the first cavity, the first drying chamber comprising a first drying agent, 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, and the airship further comprises a second drying chamber arranged on the pipe wall of the air duct of the second cavity, the second drying chamber comprising a second drying agent, a second heating film and a second drying valve cover covering the second drying chamber; the airship further comprises a drying push rod arranged outside the air duct and a drying connecting rod respectively connected to 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 comprises:

[0098] In the static working mode, the controller controls the first valve and the second valve to be closed, controls the fan to be closed, and controls the first drying valve cover and the second drying valve cover to be closed.

[0099] In the dehumidification mode, the controller controls the first valve and the second valve to be closed, controls the fan to be reversed, and controls the first drying valve cover and the second drying valve cover to be opened, so that the gas of the auxiliary air bag passes through the first drying agent of the first drying chamber and the second drying agent of the second drying chamber in sequence to perform dehumidification operation on the gas of the auxiliary air bag.

[0100] In the desiccant dehumidification mode, the controller controls the first valve and the second valve to be closed, controls the fan to be closed, controls the first desiccant valve cover and the second desiccant valve cover to be closed, 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 of the first desiccant and the second desiccant is evaporated.

[0101] Considering that due to the temperature difference between the air in the auxiliary air bag and the ambient air, the moisture in the air condenses in the air bag and is not easy to be discharged during the inflation and exhaust process of the auxiliary air bag, and long-term accumulation will affect the safe operation of the auxiliary air bag. The embodiment is based on the integrated fan, first valve and second valve structure integrated on the air duct pipe, two symmetrical drying chambers are arranged on the pipe wall of the upper and lower chambers of the air duct pipe, and the air moisture in the auxiliary air bag is absorbed and discharged by controlling the fan, the first valve, the second valve, the first desiccant valve cover and the second desiccant valve cover, so that the automatic dehumidification and moisture removal of the gas in the air bag are realized. Specifically, on the basis of closing the first valve and the second valve, the air in the air bag is automatically dehumidified by controlling the fan, the first desiccant valve cover and the second desiccant valve cover; or the desiccant in each drying chamber is dried and moisture removed by controlling the fan, the first desiccant valve cover and the second desiccant valve cover, the first valve and the second valve. The specific implementation of the embodiment is described in the foregoing embodiment, which will not be repeated here.

[0102] The present application is directed to the existing problems, and a floating device with a built-in pressure regulating structure, a wind power generation system and a control method are provided. The first valve, the second valve and the fan of the pressure regulating structure of the floating device are integrally arranged in the air duct pipe, and the air duct pipe is arranged in the auxiliary air bag. The pressure regulating structure is controlled by the controller of the pressure control structure arranged outside the auxiliary air bag to realize the exhaust or inflation of the auxiliary air bag. The pressure regulating structure is integrally arranged in the auxiliary air bag in the embodiment, which has the characteristics of compact structure, high pressure, good air tightness, convenient installation, good maintainability and good protection, thereby making up for the problems in the prior art, significantly improving the stability and reliability of the wind power generation system arranged in the high altitude, and having practical application value.

[0103] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and it is impossible to enumerate all the embodiments here. Any obvious changes or variations derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. An aerostat based on an internal pressure regulating structure, characterized in that, The auxiliary air bag, a pressure regulating structure arranged inside the auxiliary air bag, and a pressure control structure arranged outside the auxiliary air bag, wherein The pressure regulating structure comprises an air duct, a first valve arranged at one end of the air duct, a second valve arranged at the other end of the air duct, and a fan arranged in the air duct between the first valve and the second valve; The pressure control structure comprises a controller and a pressure difference sensor, and the controller is configured to control 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 pressure difference sensor; The first valve, the air duct and the fan form a first cavity, and the airship further comprises a first drying chamber arranged on the wall of the air duct of the first cavity, the first drying chamber comprising 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, and the airship further comprises a second drying chamber arranged on the wall of the air duct of the second cavity, the second drying chamber comprising a second desiccant, a second heating film and a second drying valve cover covering the second drying chamber; The airship further comprises a drying push rod arranged outside the air duct, and a drying connecting rod connected to the first drying valve cover and the second drying valve cover respectively, and 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 instruction of the controller.

2. The aerostat of claim 1, wherein, The pressure regulating structure further comprises a valve driving device arranged outside the air duct for driving the first valve and the second valve.

3. The aerostat of claim 1, wherein, The first drying chamber arranged in the first cavity and the second drying chamber arranged in the second cavity are symmetrically arranged with respect to the fan.

4. The aerostat of claim 1, wherein, The auxiliary air bag comprises a plurality of sub-air bags; The pressure control structure comprises a sub-control structure corresponding to each sub-air bag, and each sub-control structure is arranged at the bottom of the corresponding sub-air bag; Or The pressure control structure comprises a sub-control structure corresponding to each sub-air bag, and the airship comprises a control console, and each sub-control structure is arranged in the control console.

5. The aerostat of claim 1, wherein, The auxiliary air bag comprises a first opening, and the first opening is provided with a first flange plate, and the first flange plate comprises a first mounting portion; The air duct further comprises a second flange plate arranged near the side of the first valve, and the second flange plate comprises a second mounting portion for fixing with the first mounting portion.

6. A wind power system characterized by The airship comprises the airship according to any one of claims 1-5, and a wind turbine mounted on the airship.

7. A control method applied to the wind power generation system as claimed in claim 6, characterized by, The control method comprises: The controller of the pressure control structure controls 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 pressure difference sensor; The control method further comprises: In the static working mode, the controller controls the first valve and the second valve to be closed, controls the fan to be closed, and controls the drying push rod to drive the drying connecting rod to close the first drying valve cover and the second drying valve cover. In the dehumidification mode, the controller controls the first and second valves to be closed, controls the fan to be reversed, controls the dry push rod to drive the dry link to open the first and second dry valve covers, so that the gas in the auxiliary air bag passes through the first and second desiccants of the first and second dry chambers in sequence to dehumidify the gas in the auxiliary air bag.

8. The control method according to claim 7, characterized by, The control method further comprises: in the desiccant dehumidification mode, the controller controls the first and second valves to be closed, controls the fan to be closed, controls the dry push rod to drive the dry link to close the first and second dry valve covers, 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 of the first and second desiccants is evaporated.

9. The control method according to claim 7, characterized by, The pressure regulating structure further comprises a valve driving device arranged outside the air duct pipe, for driving the first and second valves; the controller of the pressure control structure controls the fan, the first valve and the second valve to exhaust or inflate the auxiliary air bag according to the air pressure of the air bag body sensed by the pressure difference sensor, further comprising: If the air pressure of the air bag body is greater than a first preset threshold value, the controller controls the valve driving device to drive the first and second valves to be opened, controls the fan to be reversed to exhaust the gas in the auxiliary air bag until the air pressure of the air bag body is less than or equal to a second threshold value; If the air pressure of the air bag body is less than a third preset threshold value, the controller controls the valve driving device to drive the first and second valves to be opened, controls the fan to be forward rotated to inflate the ambient air into the auxiliary air bag until the air pressure of the air bag body is greater than or equal to a fourth threshold value.

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