Air and carbon dioxide coupled water drainage device and underwater vehicle

Abstract

The application relates to the technical field of underwater vehicle drainage, and discloses an air and carbon dioxide linkage drainage device and an underwater vehicle. The air and carbon dioxide linkage drainage device comprises a power unit, an air unit, a pressure reduction unit and a flow guide assembly. The power unit is provided with a first storage chamber for storing liquid carbon dioxide. The air unit is provided with a second storage chamber for storing high-pressure air. The pressure reduction unit is provided with a pressure reduction chamber which is selectively communicated with the first storage chamber and the second storage chamber. The flow guide assembly is provided with a first air inlet and a first air outlet. The first air inlet is communicated with the pressure reduction chamber, and the first air outlet is communicated with a ballast water tank. The technical problem that carbon dioxide is easily cooled by water, thereby causing volume shrinkage and reducing the drainage capacity of the air and carbon dioxide linkage drainage device is solved.

Description

Technical Field

[0001] This application relates to the field of underwater vehicle drainage technology, and more particularly to a drainage device and an underwater vehicle that links air and carbon dioxide. Background Technology

[0002] With the maturity and development of underwater navigation technology, underwater vehicles need to dewater during surfacing to ensure safe ascent. Common methods for underwater vehicle dewatering include compressed air dewatering and high-temperature gas dewatering. Compressed air dewatering uses compressed air to expel water from the storage tank, while high-temperature gas dewatering uses ignited agents to generate high-temperature gas, which enters the water tank and expels water. However, compressed air dewatering is greatly affected by water back pressure, and its dewatering capacity decreases as the operating depth of the underwater vehicle increases. High-temperature gas dewatering is prone to secondary combustion, which is unsafe. Dewatering using liquid carbon dioxide converted to gas can utilize the extremely high pressure drop during the carbon dioxide conversion process to depressurize the water in the water tank. However, in these technologies, carbon dioxide is easily cooled by water, causing volume shrinkage and reducing the dewatering capacity of the air-carbon dioxide linked dewatering device. Summary of the Invention

[0003] This application provides a drainage device and an underwater vehicle that link air and carbon dioxide, which solves the technical problem that carbon dioxide is easily cooled by water, thereby causing volume shrinkage and reducing the drainage capacity of the air-carbon dioxide linked drainage device.

[0004] To achieve the above objectives, the main technical solutions adopted in this application include:

[0005] In a first aspect, embodiments of this application provide a drainage device that links air and carbon dioxide. The drainage device includes a power unit, an air unit, a pressure reducing unit, and a flow guiding component. The power unit has a first storage chamber for storing liquid carbon dioxide. The air unit has a second storage chamber for storing high-pressure air. The pressure reducing unit has a pressure reducing chamber, which can be selectively connected to the first and second storage chambers. The flow guiding component has a first air inlet and a first air outlet. The first air inlet is connected to the pressure reducing chamber, and the first air outlet is connected to the ballast water tank.

[0006] The air-carbon dioxide linkage drainage device proposed in this application embodiment has a first air inlet and a first air outlet in the flow guiding component. The first air inlet is connected to the decompression chamber, and the first air outlet is connected to the ballast water tank. Air can first enter the flow guiding component from the first air inlet and then enter the ballast water tank, forming an air cushion in the ballast water tank. After carbon dioxide enters the ballast water tank, there is an air cushion between the carbon dioxide and the water. The air cushion can reduce the direct contact between carbon dioxide and water, reduce the probability of carbon dioxide temperature drop, and thus reduce the probability of carbon dioxide volume shrinkage when it encounters water for cooling, thereby improving the drainage capacity of the air-carbon dioxide linkage drainage device.

[0007] Optionally, the air unit has a first outlet connected to a second storage chamber and a decompression chamber. The air unit also includes a first valve disposed at the first outlet, which can selectively open and close the first outlet.

[0008] The air unit also includes a first valve located at the first outlet. The first valve can selectively open and close the first outlet, which can precisely control the air flow at the first outlet, thereby controlling the drainage volume and improving the stability and reliability of the drainage device that links air and carbon dioxide.

[0009] Optionally, the air unit includes a first peripheral wall, a first bottom wall, and a second bottom wall. Along a first direction, the two ends of the first peripheral wall are respectively connected to the outer peripheral edges of the first bottom wall and the second bottom wall. The first bottom wall is provided with a first outlet. The air unit also includes a first plate portion. Along the first direction, the outer peripheral surface of the first plate portion is slidably connected to the inner peripheral surface of the first peripheral wall.

[0010] The air unit also includes a first plate, and along the first direction, the outer peripheral surface of the first plate is slidably connected to the inner peripheral surface of the first peripheral wall. This can improve the utilization efficiency of air in the air bottle, allow more water to be discharged from the ballast water tank, form a thicker air cushion, further reduce the probability of carbon dioxide cooling upon contact with water, and improve the operating efficiency and reliability of the air and carbon dioxide linked drainage device.

[0011] Optionally, the air unit further includes a first drive member disposed on the second bottom wall, and the power output end of the first drive member is connected to the first plate.

[0012] The power output end of the first drive component is connected to the first plate. The introduction of the first drive component provides an additional power source for the air unit. By precisely controlling the operating speed and force of the first drive component, and thus controlling the movement of the first plate, it is possible to achieve fine adjustment of parameters such as airflow and pressure inside the air unit, thereby improving the operating efficiency of the air and carbon dioxide linkage drainage device.

[0013] Optionally, the air unit further includes a first seal disposed between the inner peripheral surface of the first plate portion and the first peripheral wall.

[0014] The first seal is located between the inner circumferential surface of the first plate and the first peripheral wall, which allows air to form a thicker air cushion in the ballast water tank, further reducing the probability of carbon dioxide being cooled by water and improving the drainage efficiency of the air and carbon dioxide linkage drainage device.

[0015] Optionally, the first plate portion further includes a first groove, which is disposed on the outer peripheral surface of the first plate portion. The first groove is annular and extends circumferentially along the first plate portion, and a first seal is disposed in the first groove.

[0016] The first groove is annular and extends circumferentially along the first plate. The first seal is disposed in the first groove, which provides a stable installation position for the first seal, ensuring that the first seal can fit tightly between the first plate and the first peripheral wall. This effectively prevents air located between the first plate and the first bottom wall from entering between the first plate and the second bottom wall, forming a thicker air cushion in the ballast water tank, further reducing the probability of carbon dioxide cooling upon contact with water, and improving the stability and reliability of the air and carbon dioxide linkage drainage device.

[0017] Optionally, the air unit also includes a pressure detection unit and a control unit, the control unit being connected to the pressure detection unit and the first drive unit respectively, and the pressure detection unit being located at the first outlet.

[0018] The control unit is connected to the pressure detection unit and the first drive unit respectively. The pressure detection unit is located at the first outlet and enables the air-carbon dioxide linkage drainage device to adjust the position of the first plate according to the air pressure value at the first outlet, thereby changing the air pressure value in the second storage chamber, allowing more water to be discharged from the ballast water tank, forming a thicker air cushion in the ballast water tank, further reducing the probability of carbon dioxide cooling when it comes into contact with water, and improving the drainage efficiency of the air-carbon dioxide linkage drainage device.

[0019] Optionally, the air and carbon dioxide linked drainage device includes multiple power unit groups and multiple pressure reducing units, with each power unit group corresponding to a different pressure reducing unit. Each power unit group includes multiple power units, and the first storage chamber of each power unit group can be selectively connected to the pressure reducing chamber of the corresponding pressure reducing unit.

[0020] The first storage chamber of each power unit group can be selectively connected to the decompression chamber of the corresponding decompression unit. When the underwater vehicle needs to surface, carbon dioxide can be allowed to enter the ballast water tank, and then the water can be discharged, thereby improving the drainage efficiency of the air and carbon dioxide linked drainage device.

[0021] Optionally, the air-carbon dioxide linkage drainage device also includes an exciter, which is disposed in the first storage chamber. The exciter is configured to receive a control signal and generate heat so that the liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide.

[0022] The excitation device is designed to receive control signals and generate heat, so that liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide. High-pressure supercritical carbon dioxide can be used because the pressure increases during the process of liquid carbon dioxide turning into gas, which can reduce dependence on external energy, discharge water in the ballast tank, and improve the operating efficiency of the air and carbon dioxide linkage drainage device.

[0023] Secondly, embodiments of this application also provide an underwater vehicle, including a drainage device that links air and carbon dioxide according to any of the embodiments of this application.

[0024] The underwater vehicle proposed in this application embodiment has a flow guiding component with a first air inlet and a first air outlet. The first air inlet is connected to a decompression chamber, and the first air outlet is connected to a ballast water tank. Air can first enter the flow guiding component from the first air inlet and then enter the ballast water tank, forming an air cushion in the ballast water tank. After carbon dioxide enters the ballast water tank, there is an air cushion between the carbon dioxide and the water. The air cushion can reduce the direct contact between carbon dioxide and water, reduce the probability of carbon dioxide temperature drop, and thus reduce the probability of carbon dioxide volume shrinkage when it encounters water for cooling, thereby improving the drainage capacity of the air and carbon dioxide linkage drainage device. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of the air-carbon dioxide linked drainage device provided in the embodiments of this application;

[0027] Figure 2 for Figure 1 Side view;

[0028] Figure 3 for Figure 1 Side view;

[0029] Figure 4 Figure 3 Top view;

[0030] Figure 5The structure of the air unit proposed in the embodiments of this application is shown;

[0031] Figure 6 The structure of the first plate portion according to an embodiment of this application is shown;

[0032] Figure 7 The structure of the power unit proposed in the embodiment of this application is shown;

[0033] Figure 8 The structure of the decompression chamber proposed in the embodiments of this application is shown;

[0034] Figure 9 This is a schematic diagram of the structure of an underwater vehicle provided in an embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the gas recovery device provided in the embodiments of this application;

[0036] Figure 11 This is a schematic diagram of the power unit provided in an embodiment of this application;

[0037] Figure 12 This is a schematic diagram of the structure of the first buffer plate provided in an embodiment of this application.

[0038] [Explanation of Labels in the Attached Image]

[0039] Air and carbon dioxide linked drainage device 100; power unit 110; first storage chamber 111; excitation element 112; second outlet 113; air unit 120; second storage chamber 121; first outlet 122; first valve 123; first peripheral wall 124; first bottom wall 125; second bottom wall 126; pressure reducing unit 130; pressure reducing chamber 131; flow guiding assembly 140; first air inlet 141; first air outlet 142; first plate 150; first groove 151; first drive element 160; first seal 170; mounting base 1 90; Connecting pipe 200; Connecting port 210; Ballast water tank 220; Underwater vehicle 230; First pipe 240; First exhaust valve 260; Gas recovery device 270; Second peripheral wall 271; Third bottom wall 272; Fourth bottom wall 273; Third outlet 274; Second plate 275; Third peripheral wall 280; Fifth bottom wall 281; Sixth bottom wall 282; Second drive component 283; Third plate 284; Second seal 285; Second groove 286; First buffer plate 290; First hole 300; First end 301; Second end 302. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0042] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0045] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0046] With the maturity and development of underwater navigation technology, underwater vehicles need to drain water during the ascent process. For example, when an underwater vehicle experiences unexpected situations such as rudder jamming, water ingress, or loss of depth, some of the stored seawater can be quickly discharged in a short period of time to provide positive buoyancy, thereby enabling the underwater vehicle to safely ascend.

[0047] Larger underwater vehicles typically employ either compressed air or high-temperature gas drainage. Compressed air drainage systems pre-compress and store air in high-pressure cylinders. When needed, a valve on the pipeline connecting the air cylinder and the water tank is opened, introducing high-pressure air into the water tank to drain the seawater. High-temperature gas drainage systems seal solid agents in a gas generator. When needed, an electrical signal ignites the agent, causing a chemical reaction that generates high-temperature gas, which is then injected into the water tank to drain the seawater. As the operating depth of underwater vehicles increases, compressed air drainage is significantly affected by back pressure, resulting in a marked decrease in drainage capacity. High-temperature gas drainage is also highly susceptible to water back pressure, leading to a gradual decrease in drainage capacity as the operating depth increases. The gas produced by high-temperature gas drainage is prone to secondary combustion, posing a safety hazard. Directly draining water from ballast tanks using pushers or similar devices is also problematic, as the high underwater pressure puts significant stress on the pushers, potentially causing fatigue damage and breakage. Utilizing the conversion of liquid carbon dioxide into a gaseous state for drainage leverages the extremely high pressure drop during the carbon dioxide conversion process to drain the water from the ballast tanks.

[0048] However, in related technologies, carbon dioxide is easily cooled by water, which causes it to shrink in volume and reduces the drainage capacity of the drainage device that links air and carbon dioxide.

[0049] In view of this, in order to solve the technical problem that carbon dioxide is easily cooled by water, thereby causing volume shrinkage and reducing the drainage capacity of the air-carbon dioxide linked drainage device, some embodiments of this application provide an air-carbon dioxide linked drainage device and an underwater vehicle. The air-carbon dioxide linked drainage device includes a power unit, an air unit, a pressure reducing unit, and a flow guiding component.

[0050] The power unit has a first storage chamber for storing liquid carbon dioxide, the air unit has a second storage chamber for storing high-pressure air, the decompression unit has a decompression chamber, and the decompression chamber can be selectively connected to the first storage chamber and the second storage chamber. The flow guiding assembly has a first air inlet and a first air outlet, the first air inlet is connected to the decompression chamber, and the first air outlet is connected to the ballast water tank.

[0051] In the above scheme, the flow guiding component has a first air inlet and a first air outlet. The first air inlet is connected to the decompression chamber, and the first air outlet is connected to the ballast water tank. Air can first enter the flow guiding component from the first air inlet and then enter the ballast water tank, forming an air cushion in the ballast water tank. After carbon dioxide enters the ballast water tank, there is an air cushion between the carbon dioxide and the water. The air cushion can reduce the direct contact time between carbon dioxide and water, reduce the energy loss of carbon dioxide, and thus reduce the degree of volume shrinkage of carbon dioxide when it encounters water for cooling, so that it maintains a large volume, thereby improving the drainage capacity of the air and carbon dioxide linkage drainage device.

[0052] The underwater vehicle disclosed in this application can be used in high-pressure environments such as deep sea, as well as in non-high-pressure environments such as rivers and lakes.

[0053] For ease of explanation, the following embodiments will be described using an air and carbon dioxide linked drainage device as an example.

[0054] Figure 1 A schematic diagram of the structure of the air-carbon dioxide linked drainage device provided in the embodiments of this application; Figure 2 for Figure 1 Side view; Figure 3 for Figure 1 Side view; Figure 4 Figure 3 Top view; Figure 5 The structure of the air unit proposed in the embodiments of this application is shown; Figure 6 The structure of the first plate portion according to an embodiment of this application is shown; Figure 7 The structure of the power unit proposed in the embodiment of this application is shown; Figure 8 The structure of the decompression chamber proposed in the embodiments of this application is shown; Figure 9 This is a schematic diagram of the structure of an underwater vehicle provided in an embodiment of this application; Figure 10 This is a schematic diagram of the gas recovery device provided in the embodiments of this application;

[0055] Figure 11 This is a schematic diagram of the power unit provided in an embodiment of this application; Figure 12 This is a schematic diagram of the structure of the first buffer plate provided in an embodiment of this application.

[0056] Please refer to Figures 1 to 4In this embodiment, the air and carbon dioxide linked drainage device 100 includes a power unit 110, an air unit 120, a pressure reducing unit 130, and a flow guiding assembly 140. The power unit 110 has a first storage chamber 111 for storing liquid carbon dioxide. The air unit 120 has a second storage chamber 121 for storing high-pressure air. The pressure reducing unit 130 has a pressure reducing chamber 131, which can be selectively connected to the first storage chamber 111 and the second storage chamber 121. The flow guiding assembly 140 has a first air inlet 141 and a first air outlet 142. The first air inlet 141 is connected to the pressure reducing chamber 131, and the first air outlet 142 is connected to the ballast water tank 220.

[0057] The air and carbon dioxide linked drainage device 100 includes a power unit 110. Under compression by the power unit 110, the carbon dioxide is in a liquid state within a first storage chamber 111, where it is stored. An air unit 120 includes a second storage chamber 121 for storing high-pressure air, which can be in a gaseous state within the second storage chamber 121. A pressure-reducing unit 130 has a pressure-reducing chamber 131. Exemplarily, the pressure-reducing chamber 131 can be constructed as a hollow, thin-walled cylinder. The pressure-reducing chamber 131 can selectively communicate with both the first and second storage chambers 111 and 121. Carbon dioxide in the first storage chamber 111 can enter the pressure-reducing chamber 131, reducing its pressure. High-pressure air stored in the second storage chamber 121 can also enter the pressure-reducing chamber 131, further reducing its pressure. The flow guiding assembly 140 has a first air inlet 141 and a first air outlet 142. After air or carbon dioxide enters the decompression chamber 131, it enters the first air inlet 141 of the flow guiding assembly 140 from the decompression chamber 131, and then exits the flow guiding assembly 140 from the first air outlet 142, and then enters the ballast water tank 220. The ballast water tank 220 stores water. After air or carbon dioxide enters the ballast water tank 220, it will discharge the water in the ballast water tank 220.

[0058] Since gaseous carbon dioxide cools and contracts upon contact with water, its drainage capacity is reduced. Therefore, the high-pressure air stored in the second storage chamber 121 can be first discharged to form an air cushion before the carbon dioxide is discharged, preventing direct contact between the carbon dioxide and water. For example, the high-pressure air in the second storage chamber 121 of the air unit 120 is first discharged into the depressurization chamber 131, then flows from the depressurization chamber 131 into the flow guide assembly 140, and after passing through the flow guide assembly 140, it enters the ballast water tank 220, discharging some of the water in the ballast water tank 220. An air cushion is then formed in the ballast water tank 220, and the carbon dioxide in the second storage chamber 121 is released, allowing it to enter the ballast water tank 220, thereby discharging the water from the ballast water tank 220. Carbon dioxide is liquid under certain pressure and temperature, has a high density, and is easy to store. When carbon dioxide is heated and pressurized, it can be rapidly converted into a supercritical state, expanding its volume several times. It has a strong instantaneous work capacity and can discharge water under high water pressure conditions, making it suitable for operation in high-pressure environments such as the deep sea.

[0059] Furthermore, the air-carbon dioxide linked drainage device 100 combines liquid carbon dioxide and high-pressure air as power sources. The liquid carbon dioxide rapidly generates a large amount of gas upon vaporization, providing powerful propulsion. For large underwater vehicles 230, when located deep on the seabed, the ballast tanks 220 experience significant water pressure. Without the powerful propulsion of carbon dioxide, it would be difficult to expel the water from the ballast tanks 220. High-pressure air can also serve as auxiliary power, ensuring the continuity and stability of drainage. The gas produced after the vaporization of liquid carbon dioxide is typically harmless carbon dioxide gas, and its release into the atmosphere will not pollute the environment. Simultaneously, the design of this device reduces direct wastewater discharge, contributing to the protection of water resources and the ecological environment. Furthermore, due to its modular design and high-quality materials, the device boasts high reliability and durability, enabling long-term stable operation and meeting various drainage requirements.

[0060] Specifically, the flow guiding component 140 has a first air inlet 141 and a first air outlet 142. The first air inlet 141 is connected to the decompression chamber 131, and the first air outlet 142 is connected to the ballast water tank 220. Air can first enter the flow guiding component 140 from the first air inlet 141, and then enter the ballast water tank 220 to form an air cushion with the ballast water tank 220. After carbon dioxide enters the ballast water tank 220, there is an air cushion between the carbon dioxide and the water. The air cushion can reduce the direct contact time between carbon dioxide and water or avoid contact between carbon dioxide and water, reduce the energy loss of carbon dioxide, and thus reduce the degree of volume shrinkage of carbon dioxide when it encounters water for cooling, so that it maintains a large volume, thereby improving the drainage capacity of the air and carbon dioxide linked drainage device 100.

[0061] Please refer to Figures 1 to 5 In this embodiment, the air unit 120 has a first outlet 122, which is connected to the second storage chamber 121 and the decompression chamber 131. The air unit 120 also includes a first valve 123, which is disposed at the first outlet 122 and can selectively open or close the first outlet 122.

[0062] Air unit 120 has a first outlet 122, and the first outlet 122 and a second storage chamber 121 are connected to a pressure reducing chamber 131. That is, air stored in the second storage chamber 121 can exit the air unit 120 from the first outlet 122 and then enter the pressure reducing chamber 131. Air unit 120 also includes a first valve 123, which is disposed at the first outlet 122. The first valve 123 can selectively open or close the first outlet 122. For example, when the first valve 123 is open, air stored in the second storage chamber 121 can exit the second storage chamber 121 from the first outlet 122 and enter the pressure reducing chamber 131. When the first valve 123 is closed, the air remains inside the second storage chamber 121 and will not exit the second storage chamber 121.

[0063] Specifically, the air unit 120 also includes a first valve 123, which is located at the first outlet 122. The first valve 123 can selectively open and close the first outlet 122, which can precisely control the air flow rate of the first outlet 122, thereby controlling the drainage volume and improving the stability and reliability of the air and carbon dioxide linkage drainage device 100.

[0064] In some embodiments, the first valve 123 can be designed as a solenoid valve. The response time of a solenoid valve is typically very short, as short as a few milliseconds. Even a pilot-operated solenoid valve can be controlled within tens of milliseconds. This rapid response capability allows the solenoid valve to quickly adjust the opening and closing state of the valve according to the control signal, thereby achieving precise control of the internal pressure and flow rate of the air and carbon dioxide linked drainage device 100. By precisely controlling the position of the valve core through electromagnetic force, the solenoid valve can achieve precise regulation of water flow rate. This is crucial for drainage systems that require high-precision control, ensuring the stability and efficiency of the system. During the ascent of the underwater vehicle 230, the pressure on the underwater vehicle 230 gradually decreases, while the buoyancy on the underwater vehicle 230 remains constant. Therefore, when the underwater vehicle 230 first starts to drain water, the valve opening angle of the solenoid valve can be adjusted to be larger, allowing more water to be discharged. As the underwater vehicle 230 ascends, the valve opening angle of the solenoid valve can be gradually reduced, thereby gradually reducing the drainage volume and ensuring uniform or uniformly accelerated ascent, improving the operational stability and reliability of the underwater vehicle 230.

[0065] Please refer to Figure 5 In this embodiment, the air unit 120 includes a first peripheral wall 124, a first bottom wall 125, and a second bottom wall 126. Along the first direction X, the two ends of the first peripheral wall 124 are respectively connected to the outer peripheral edges of the first bottom wall 125 and the second bottom wall 126. The first bottom wall 125 is provided with a first outlet 122. The air unit 120 also includes a first plate portion 150. Along the first direction X, the outer peripheral surface of the first plate portion 150 is slidably connected to the inner peripheral surface of the first peripheral wall 124.

[0066] The air unit 120 includes a first peripheral wall 124, a first bottom wall 125, and a second bottom wall 126. The first bottom wall 125 and the second bottom wall 126 are arranged opposite to each other along the first direction X. The two ends of the first peripheral wall 124 are respectively connected to the outer periphery of the first bottom wall 125 and the outer periphery of the second bottom wall 126. The first outlet 122 is located on the first bottom wall 125. That is to say, the first bottom wall 125 is closer to the decompression chamber 131, and the second bottom wall 126 is farther from the decompression chamber 131. Because the air pressure inside the air unit 120 is too low during the air release process, it cannot completely drain the ballast water tank 220. Therefore, a first plate 150 can be provided inside the air unit 120. The outer peripheral surface of the first plate 150 is slidably connected to the inner peripheral surface of the first peripheral wall 124. That is, the first plate 150 and the first peripheral wall 124 can be relatively displaced along the first direction X. The first plate 150 can push the remaining air in the air bottle to the ballast water tank 220, which improves the utilization efficiency of the air in the air unit 120 and solves the problem that the air cannot drain the water from the ballast water tank 220 when the underwater vehicle 230 is in a deeper position.

[0067] Specifically, the air unit 120 also includes a first plate portion 150. Along the first direction X, the outer peripheral surface of the first plate portion 150 is slidably connected to the inner peripheral surface of the first peripheral wall 124, which can improve the utilization efficiency of air in the air bottle, allow the ballast water tank 220 to discharge more water, form a thicker air cushion, further reduce the probability of carbon dioxide contacting water and cooling, and improve the operating efficiency and reliability of the air and carbon dioxide linked drainage device 100.

[0068] Please refer to Figure 5 In this embodiment, the air unit 120 further includes a first driving member 160, which is disposed on the second bottom wall 126, and the power output end of the first driving member 160 is connected to the first plate portion 150.

[0069] The air unit 120 includes a first drive member 160, which can be configured as a drive motor. The first drive member 160 is disposed on the second bottom wall 126 and has a power output end. The power output end of the first drive member 160 is connected to the first plate portion 150 and the first drive member 160 can control the first plate portion 150 to move in the first direction X.

[0070] For example, the first plate portion 150 can be attached to the inner wall of the air unit 120, and the first driving member 160 is disposed on the second bottom wall 126, that is, at a position away from the first outlet 122 of the air unit 120. The air from the air unit 120 is discharged into the ballast water tank 220. Since the air in the air unit 120 needs to meet a certain pressure to discharge the water in the ballast water tank 220, there will inevitably be residual air in the air unit 120 that cannot be discharged. In this way, the first driving member 160 can be used to drive the first plate portion 150 to move along the first direction X and toward the first outlet 122, to compress the residual air in the air unit 120 and squeeze the residual air into the ballast water tank 220, thereby improving the utilization efficiency of the air unit 120.

[0071] Specifically, the power output end of the first drive member 160 is connected to the first plate 150. The introduction of the first drive member 160 provides an additional power source for the air unit 120. By precisely controlling the operating speed and force of the first drive member 160, and thus controlling the movement of the first plate 150, fine adjustment of parameters such as airflow and pressure inside the air unit 120 can be achieved, thereby improving the operating efficiency of the air and carbon dioxide linkage drainage device 100.

[0072] Please refer to Figure 5 In this embodiment, the air unit 120 further includes a first sealing member 170, which is disposed between the first plate portion 150 and the inner peripheral surface of the first peripheral wall 124.

[0073] The first seal 170 is disposed between the inner circumferential surface of the first plate portion 150 and the first peripheral wall 124. The first seal 170 can play a sealing role. When the first plate portion 150 moves along the first direction X, the first seal 170 can prevent the air located between the first plate portion 150 and the first bottom wall 125 from entering the space between the first plate portion 150 and the second bottom wall 126. This can increase the air pressure in the air unit 120, force the air in the air unit 120 into the ballast water tank 220, thereby forming a thicker air cushion, discharging more water from the ballast water tank 220, further reducing the volume shrinkage caused by carbon dioxide cooling, and improving the drainage capacity of the air and carbon dioxide linked drainage device 100. Understandably, the material of the first seal 170 can be natural rubber, nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), silicone rubber, and fluororubber. Natural rubber has good elasticity and sealing performance, and is suitable for sealing media such as water and air. Nitrile rubber (NBR) has good oil resistance and is suitable for sealing applications in contact with oily media. Ethylene propylene diene monomer (EPDM) has excellent ozone resistance and chemical corrosion resistance, and is suitable for outdoor or chemically corrosive media environments. Silicone rubber has good high-temperature and low-temperature stability and can maintain sealing performance under extreme temperature conditions. Fluororubber has excellent corrosion resistance, high-temperature resistance, and oil resistance, and is suitable for sealing highly corrosive, high-temperature, or oily media.

[0074] Specifically, the first seal 170 is disposed between the inner circumferential surface of the first plate portion 150 and the first peripheral wall 124, which enables air to form a thicker air cushion in the ballast water tank 220, further reducing the probability of carbon dioxide being cooled by water and improving the drainage efficiency of the air and carbon dioxide linkage drainage device 100.

[0075] Please refer to Figures 1 to 6 In this embodiment, the first plate portion 150 further includes a first groove 151, which is disposed on the outer peripheral surface of the first plate portion 150. The first groove 151 is annular and extends circumferentially along the first plate portion 150. The first sealing member 170 is disposed in the first groove 151.

[0076] The first plate portion 150 also includes a first groove 151. The opening of the first groove 151 faces the first peripheral wall 124. The first groove 151 is disposed on the outer peripheral surface of the first plate portion 150. The first groove 151 is annular in shape and extends along the circumference of the first plate portion 150. It can be understood that the opening of the first groove 151 is approximately perpendicular to the first direction X. The first seal 170 can be disposed between the first groove 151 and the first peripheral wall 124. The first groove 151 provides a stable mounting position for the first seal 170, ensuring that the first seal 170 can fit tightly between the first plate portion 150 and the first peripheral wall 124, effectively preventing air located between the first plate portion 150 and the first bottom wall 125 from entering between the first plate portion 150 and the second bottom wall 126. Moreover, the first seal 170 is installed in the first groove 151, which can increase the contact area between the first seal 170 and the first plate portion 150 and the first peripheral wall 124, thereby improving the reliability and stability of the seal. Furthermore, the design of the first groove 151 makes the installation of the first seal 170 more convenient and quick, eliminating the need for additional fixing devices or adhesives, thus reducing installation difficulty and cost. The presence of the first groove 151 can, to a certain extent, enhance the structural strength of the first plate 150, making it more resistant to external pressure or impact, and improving the overall stability of the air and carbon dioxide linked drainage device 100.

[0077] Specifically, the first groove 151 is annular and extends circumferentially along the first plate portion 150. The first seal 170 is disposed in the first groove 151, which provides a stable installation position for the first seal 170, ensuring that the first seal 170 can fit tightly between the first plate portion 150 and the first peripheral wall 124. This effectively prevents air located between the first plate portion 150 and the first bottom wall 125 from entering between the first plate portion 150 and the second bottom wall 126, thus forming a thicker air cushion in the ballast water tank 220. This further reduces the probability of carbon dioxide cooling upon contact with water and improves the stability and reliability of the air and carbon dioxide linked drainage device 100.

[0078] Please refer to Figures 1 to 9 In this embodiment, the air unit 120 further includes a pressure detection unit and a control unit. The control unit is connected to the pressure detection unit and the first drive unit 160, respectively. The pressure detection unit is located at the first outlet 122.

[0079] The air unit 120 may further include a pressure detection unit and a control unit. The pressure detection unit is used to detect the air pressure inside the second storage chamber 121. The control unit is connected to both the pressure detection unit and the first drive member 160. The pressure detection unit sends the detected air pressure value to the control unit. The control unit controls the first drive member 160 based on the data detected by the pressure detection unit, controlling the first plate portion 150 to move along the first direction X and toward the first bottom wall 125. For example, when the air pressure value is lower than a first threshold, the control unit controls the first drive member 160 to move the first plate portion 150; when the air pressure value is higher than the first threshold, the control unit does not control the first drive member 160. The pressure detection unit may be located at the first outlet 122. Since air is discharged from the second storage chamber 121 through the first outlet 122, setting the pressure detection unit at the first outlet 122 allows for a more accurate measurement of the air pressure value.

[0080] Specifically, the control unit is connected to the pressure detection unit and the first drive unit 160 respectively. The pressure detection unit is located at the first outlet 122 and enables the air-carbon dioxide linkage drainage device 100 to adjust the position of the first plate 150 according to the air pressure value at the first outlet 122, thereby changing the air pressure value in the second storage chamber 121, causing more water to be discharged from the ballast water tank 220, forming a thicker air cushion in the ballast water tank 220, further reducing the probability of carbon dioxide cooling when it comes into contact with water, and improving the drainage efficiency of the air-carbon dioxide linkage drainage device 100.

[0081] Please refer to Figures 9 to 11 In some embodiments, when the underwater vehicle 230 needs to surface quickly and the air-carbon dioxide linked drainage device 100 needs to drain water quickly, the control unit, upon receiving the rapid surfacing signal from the underwater vehicle 230, can control the first drive member 160 to accelerate the position of the first plate 150 according to the surfacing requirement of the underwater vehicle 230, so that more air enters the ballast tank 220 in a shorter time, causing the underwater vehicle 230 to discharge more water, thereby enabling the underwater vehicle 230 to surface quickly.

[0082] Please refer to Figures 9 to 11In some embodiments, a flow guide assembly 140 is provided between the air-carbon dioxide linked drainage device 100 and the ballast water tank 220. One end of the flow guide assembly 140 is connected to the air-carbon dioxide linked drainage device 100, and the other end is connected to the ballast water tank 220. Air or carbon dioxide can enter the ballast water tank 220 from the air-carbon dioxide linked drainage device 100 through the flow guide assembly 140. A first exhaust valve 260 may be provided on the flow guide assembly 140. The first exhaust valve 260 is used to control the amount of gas exhausted by the air-carbon dioxide linked drainage device 100 per unit time, that is, the gas flow rate and velocity. For example, the first exhaust valve 260 can control the surfacing speed of the underwater vehicle 230 when it is navigating underwater, which requires precise control. The first exhaust valve 260 is connected to the control unit. The control unit can control the opening and closing degree of the first exhaust valve 260 on the flow guide assembly 140, thereby controlling the flow rate and velocity of the gas through the flow guide assembly 140. For example, when the underwater vehicle 230 needs to ascend quickly, for example, at an ascending speed of 10 m / s, the first exhaust valve 260 can be fully opened, allowing the gas (carbon dioxide or air) to pass through the flow guide assembly 140 at the maximum flow rate and velocity and enter the ballast tank 220, thereby discharging the water from the ballast tank 220. When the underwater vehicle 230 needs to ascend at a moderate speed, for example, at an ascending speed of 5 m / s, the first exhaust valve 260 can be in a half-open state, allowing the gas to flow out at a corresponding flow rate and velocity per unit time, thereby precisely controlling the ascent of the underwater vehicle 230.

[0083] Please refer to Figures 9 to 11 In some embodiments, the underwater vehicle 230 also includes a gas recovery device 270, which is optionally connected to the ballast tank 220. When the underwater vehicle 230 is buoyant, the gas recovery device 270 is not connected to the ballast tank 220. When the underwater vehicle 230 needs to sink, the gas recovery device 270 is connected to the ballast tank 220, and the air and carbon dioxide in the ballast tank 220 flow into the gas recovery device 270. The ballast tank 220 is refilled with water, thereby increasing the weight of the underwater vehicle 230 so that the weight of the underwater vehicle 230 is greater than the buoyancy, thereby allowing the underwater vehicle 230 to sink.

[0084] Please refer to Figures 9 to 11In some embodiments, the gas recovery device 270 includes a second peripheral wall 271, a third bottom wall 272, and a fourth bottom wall 273. The two ends of the second peripheral wall 271 are connected to the outer periphery of the third bottom wall 272 and the outer periphery of the fourth bottom wall 273, respectively. The third bottom wall 272 is provided with a third outlet 274, which communicates with the ballast water tank 220. Air or carbon dioxide from the ballast water tank 220 enters the gas recovery device 270 through the third outlet 274. The gas recovery device 270 also includes a second plate. 275, the outer peripheral surface of the second plate portion 275 is slidably connected to the inner peripheral surface of the second peripheral wall 271. The second plate portion 275 is movably disposed on the inner peripheral surface of the second peripheral wall 271. When gas enters the gas recovery device 270, the second plate portion 275 is controlled to move away from the third outlet 274 so that the gas enters the gas recovery device 270. When the underwater vehicle 230 needs to surface, the second plate portion 275 is controlled to move closer to the third outlet 274 so that the carbon dioxide and air in the gas recovery device 270 are discharged into the ballast water tank 220.

[0085] Please refer to Figures 9 to 11 In some embodiments, the ballast tank 220 discharges water through the outlet of the first pipe 240. A Helmholtz resonator is arranged circumferentially along the outlet of the first pipe 240. Each Helmholtz resonator unit is machined from a 316L stainless steel substrate and contains a cylindrical cavity and a slit neck. For example, the cavity diameter can be 2.0 mm, the cavity height can be 5.0 mm, the neck width can be 0.3 mm, and the neck length can be 0.5 mm. When the sound wave frequency matches the resonant frequency of the Helmholtz resonator, the sound wave generates high-speed oscillations in the neck, converting sound energy into heat energy through viscous dissipation and thermal conduction effects. A piezoelectric ceramic sheet can be embedded in the neck of the Helmholtz resonator. A MEMS hydrophone array can be arranged at the outlet of the first pipe 240. The MEMS hydrophone is used to collect noise signals in real time and outputs an analog voltage to the corresponding piezoelectric ceramic sheet through a conversion module. The adjustment time can be less than 5 seconds. The Helmholtz resonator operates, reducing or eliminating drainage noise at the outlet of the first pipe 240.

[0086] Please refer to Figures 9 to 11 In some embodiments, the underwater vehicle 230 may be a submarine.

[0087] Please refer to Figures 9 to 11In some embodiments, the power unit 110 includes a third peripheral wall 280, a fifth bottom wall 281, and a sixth bottom wall 282. The power unit 110 also includes a second driving member 283 disposed on the fifth bottom wall 281. The power output end of the second driving member 283 is connected to the third plate portion 284. The power unit 110 also includes a second sealing member 285 disposed between the inner peripheral surface of the third plate portion 284 and the third peripheral wall 280. The third plate portion 284 also includes a second groove 286 disposed on the third plate portion 284. The outer peripheral surface of the second groove 286 is annular and extends circumferentially along the third plate portion 284. The second seal 285 is disposed in the second groove 286. The sixth bottom wall 282 is provided with a second outlet 113, which communicates with the pressure reducing chamber 131. The second drive member 283 can drive the third plate portion 284 to move toward the second outlet 113, squeezing the carbon dioxide stored in the power unit 110 into the pressure reducing chamber 131, thereby allowing more water to be discharged, improving the utilization rate of carbon dioxide, and improving the drainage efficiency of the air and carbon dioxide linked drainage device 100.

[0088] In some embodiments, the air-carbon dioxide linked drainage device 100 further includes a biomimetic gill-like multilayer gas exchange membrane. The multilayer gas exchange membrane includes a base layer, a functional layer, and a protective layer. The base layer is constructed of polytetrafluoroethylene (PTFE) and a porous membrane (0.2 micrometers in pore size) to provide mechanical support. The functional layer is constructed of a lipid bilayer structure mimicking fish gill cells, embedding a recombinant aquaporin-Z to selectively block the permeation of carbon dioxide molecules. The protective layer is constructed of a silica nanocoating (50 nm thick) to prevent the adhesion of biofouling. The multilayer gas exchange membrane is movably disposed inside the ballast tank 220 and located between the water and air cushion, further reducing the probability of carbon dioxide contacting water and reducing the probability of carbon dioxide cooling and contraction, allowing more water to be discharged from the air-carbon dioxide linked drainage device 100, thereby further improving the drainage efficiency of the air-carbon dioxide linked drainage device 100.

[0089] Please refer to Figures 1 to 9 In this embodiment, the air and carbon dioxide linked drainage device 100 includes multiple power unit groups and multiple pressure reducing units 130. The multiple power unit groups correspond one-to-one with the multiple pressure reducing units 130. Each power unit group includes multiple power units 110. The first storage chamber 111 of each power unit group can be selectively connected to the pressure reducing chamber 131 of the corresponding pressure reducing unit 130.

[0090] The air-carbon dioxide linked drainage device 100 includes multiple power unit groups, enabling the device to flexibly adjust power output according to drainage needs. When a large amount of water needs to be drained from the ballast water tank 220, more power unit groups can be activated, thereby improving drainage efficiency. Each power unit group corresponds to a pressure-reducing unit 130. This means that carbon dioxide from multiple power unit groups can exit the power unit group and enter the pressure-reducing chamber 131. Each power unit group includes multiple power units 110. When carbon dioxide needs to be discharged from the first storage chamber 111, the first storage chamber 111 of each power unit 110 can be connected to the pressure-reducing chamber 131, allowing carbon dioxide to exit the first storage chamber 111 and enter the pressure-reducing chamber 131. For example, a first rupture diaphragm can be installed between the pressure-reducing chamber 131 and the first storage chamber 111. When the carbon dioxide pressure exceeds a certain threshold, the carbon dioxide will rupture the first rupture diaphragm and enter the pressure-reducing chamber 131 from the first storage chamber 111.

[0091] Specifically, the first storage chamber 111 of each power unit group can be selectively connected to the decompression chamber 131 of the corresponding decompression unit 130. When the underwater vehicle 230 needs to surface, carbon dioxide can enter the ballast water tank 220 and then the water can be discharged, thereby improving the drainage efficiency of the air and carbon dioxide linked drainage device 100.

[0092] Please refer to Figures 1 to 12 In some embodiments, the air-carbon dioxide linked drainage device 100 further includes a first buffer plate 290, which can be disposed on the inner wall of the pressure-reducing chamber 131. The first buffer plate 290 has a plurality of first holes 300 extending through it along its thickness direction. Each first hole 300 includes a first end 301 and a second end 302, which are positioned opposite each other along the thickness direction of the first buffer plate 290. The radial dimension of the first end 301 is larger than that of the second end 302. The diameter of the first hole 300 from the first end 301 to the second end 302 is... As the size gradually increases, air or carbon dioxide enters the first hole 300 from the second end 302, and then flows from the first end 301 to the guide assembly 140. At the moment of release, the air or carbon dioxide has a large pressure, a large impact force, and a small volume. By setting the first buffer plate 290, the air or carbon dioxide can be buffered, reducing the impact of air or carbon dioxide entering the ballast water tank 220, allowing the air and carbon dioxide to be released more fully in the second depressurization pipeline 132, increasing the volume of air or carbon dioxide, and allowing more air or carbon dioxide to enter the ballast water tank 220, thereby improving the drainage capacity of the air and carbon dioxide linked drainage device 100.

[0093] Please refer to Figures 1 to 9 In this embodiment, the air and carbon dioxide linkage drainage device 100 further includes an exciter 112, which is disposed in the first storage chamber 111. The exciter 112 is configured to receive a control signal and generate heat so that the liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide.

[0094] The air-carbon dioxide linked drainage device 100 may also include an exciter 112, which is disposed in the first storage chamber 111. The exciter 112 can receive a control signal and then generate heat, causing the liquid carbon dioxide to absorb heat and be converted into high-pressure supercritical carbon dioxide. The supercritical carbon dioxide can serve as a power source to provide additional energy support for the air-carbon dioxide linked drainage device 100, thereby allowing the high-pressure carbon dioxide to enter the ballast water tank 220 and causing the water in the ballast water tank 220 to be discharged.

[0095] Specifically, the exciter 112 is configured to receive control signals and generate heat so that liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide. High-pressure supercritical carbon dioxide can be used because, on the one hand, the pressure increases during the process of liquid carbon dioxide becoming supercritical, which can reduce dependence on external energy, discharge water in ballast tank 220, and improve the operating efficiency of air and carbon dioxide linkage drainage device 100.

[0096] In some embodiments, the power unit 110 is provided with a second outlet 113, and the pressure reducing unit 130 is provided with a communication port 210. The second outlet 113 and the communication port 210 are connected, thereby allowing carbon dioxide from the power unit 110 to enter the chamber.

[0097] In some embodiments, multiple pressure reducing units 130 are provided with communication ports 210, and communication pipes 200 can be provided on the communication ports 210. The communication pipes 200 are connected to the communication ports 210, and the pressure reducing chambers 131 of the multiple pressure reducing units 130 are connected through the multiple communication pipes 200. For example, the pressure reducing chamber 131 can have two communication ports 210, one communication port 210 is used to communicate with the power unit 110, and the other communication port 210 is used to communicate with another pressure reducing chamber 131.

[0098] In some embodiments, the pressure reducing unit 130 and the air unit 120 can be connected by a connecting pipe 200.

[0099] In some embodiments, the air-carbon dioxide linked drainage device 100 is provided with a mounting base 190, and the power unit 110, pressure reducing unit 130, and air unit 120 can all be mounted on the mounting base 190.

[0100] This application also provides an underwater vehicle 230, including the air and carbon dioxide linkage drainage device 100 as described in any of the embodiments of this application.

[0101] The underwater vehicle 230 proposed in this application embodiment has a flow guiding component 140 with a first air inlet 141 and a first air outlet 142. The first air inlet 141 is connected to the decompression chamber 131, and the first air outlet 142 is connected to the ballast water tank 220. Air can first enter the flow guiding component 140 from the first air inlet 141 and then enter the ballast water tank 220, forming an air cushion in the ballast water tank 220. After carbon dioxide enters the ballast water tank 220, there is an air cushion between the carbon dioxide and the water. The air cushion can reduce the direct contact between carbon dioxide and water, reduce the probability of carbon dioxide temperature drop, and thus reduce the probability of carbon dioxide volume shrinkage when it encounters water for cooling, thereby improving the drainage capacity of the air and carbon dioxide linkage drainage device 100.

[0102] In some embodiments, air or carbon dioxide can enter the ballast water tank 220 from the air and carbon dioxide linked drainage device 100, and then the water in the ballast water tank 220 is discharged from the underwater vehicle 230 through the first pipe 240, thereby reducing the weight of the underwater vehicle 230.

[0103] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0104] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0105] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0106] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An air and carbon dioxide linkage drainage device, characterized by, The air and carbon dioxide linkage drainage device comprises a power unit, an air unit, a pressure reduction unit, and a flow guide assembly. The air unit has a first outlet connecting the second storage chamber and the pressure reduction chamber. The air unit further comprises a first valve arranged at the first outlet and selectively opening and closing the first outlet. The air unit comprises a first peripheral wall, a first bottom wall, and a second bottom wall. The air unit further comprises a first plate arranged in sliding connection with the inner surface of the first peripheral wall.

2. The air and carbon dioxide linked drain of claim 1, wherein, The air unit further comprises a first drive arranged at the second bottom wall and having a power output end connected with the first plate. The air unit further comprises a first seal arranged between the first plate and the inner surface of the first peripheral wall.

3. The air and carbon dioxide linked drain of claim 2, wherein, The first plate further comprises a first groove arranged at the outer surface of the first plate. The air unit further comprises a pressure detection unit and a control unit.

4. The air and carbon dioxide linked drain of claim 3, wherein, The air and carbon dioxide linkage drainage device comprises a plurality of power unit groups and a plurality of pressure reduction units.

5. The air and carbon dioxide linked drain of claim 3, wherein, The pressure reduction chambers of the plurality of pressure reduction units are in communication with each other.

6. The air and carbon dioxide linked drain of claim 5, wherein, The air and carbon dioxide linkage drainage device further comprises an excitation element arranged at the first storage chamber.

7. The air and carbon dioxide linked drain of claim 4, wherein, The air and carbon dioxide linkage drainage device comprises the air and carbon dioxide linkage drainage device according to any one of claims 1-10.

8. The air and carbon dioxide linked drain of claim 1, wherein, ​ 9. The air and carbon dioxide linked drain of claim 8, wherein, ​ 10. The air and carbon dioxide linked drain of claim 1, wherein, ​ 11. An underwater vehicle, characterized by ​

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