Built-in phase change drainage system and underwater vehicle

Abstract

The invention relates to the technical field of underwater vehicles, and discloses a built-in phase change drainage system and an underwater vehicle, the built-in phase change drainage system comprises a drainage device, a water ballast tank and a control unit, the drainage device comprises a first power unit and a pressure reduction unit, a first storage chamber for storing liquid carbon dioxide is arranged in the first power unit, and a pressure reduction chamber is arranged in the pressure reduction unit; the water ballast tank is provided with a containing cabin used for containing water, and the containing cabin is selectively communicated with the pressure reduction cavity. The control unit is in communication connection with the first power unit, the first power unit is suitable for converting liquid carbon dioxide into high-pressure supercritical carbon dioxide under the control of the control unit, and the carbon dioxide enters the containing cabin after being subjected to pressure reduction of the pressure reduction cavity so as to discharge water in the containing cabin. The drainage system is safe, efficient and high in drainage capacity.

Description

Technical Field

[0001] The present application relates to the technical field of underwater vehicles, and in particular to a built-in phase change drainage system and an underwater vehicle. Background Art

[0002] At present, when underwater vehicles encounter unexpected situations such as rudder jamming, water ingress, and falling depth, it is necessary to quickly discharge part of the stored seawater in a short period of time to provide positive buoyancy and enable the underwater vehicle to float safely. At present, medium and large underwater vehicles mainly use compressed air drainage systems or high-temperature gas drainage systems. As the working depth of underwater vehicles gradually increases, the compressed air drainage system is greatly affected by back pressure and the drainage capacity decreases significantly; the carbon monoxide, hydrogen and other gases produced by high-temperature gas drainage have the risk of secondary combustion, which is not conducive to safety. Summary of the invention

[0003] The present application provides a built-in phase change drainage system and an underwater vehicle. The drainage system is safe, efficient and has a strong drainage capacity.

[0004] In order to achieve the above objectives, the main technical solutions adopted in this application include: In a first aspect, an embodiment of the present application provides a built-in phase change drainage system, comprising: a drainage device, a ballast water tank and a control unit, the drainage device comprising a first power unit and a decompression unit, the first power unit being provided with a first storage chamber for storing liquid carbon dioxide, and the decompression unit being provided with a decompression chamber; the ballast water tank having a holding chamber for holding water, and the holding chamber being selectively connected to the decompression chamber; the control unit being communicatively connected to the first power unit, and the first power unit being suitable for converting liquid carbon dioxide into high-pressure supercritical carbon dioxide under the control of the control unit, and the carbon dioxide enters the holding chamber after being decompressed in the decompression chamber to discharge the water in the holding chamber.

[0005] According to the built-in phase change drainage system of the embodiment of the present application, after the liquid carbon dioxide is converted into supercritical carbon dioxide, its volume expands greatly. The liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide to achieve expansion work and drainage, and the drainage capacity is strong and safe and reliable.

[0006] In addition, the built-in phase change drainage system of the embodiment of the present application can adjust the drainage capacity of the device by adjusting the working time interval between each first power unit, so as to achieve the goal of adjusting the drainage capacity according to the working condition requirements. The present invention uses liquid carbon dioxide as the working fluid, which has extremely low cost and can be used again after filling, and has low maintenance and guarantee costs.

[0007] According to some embodiments of the present application, there are multiple ballast water tanks, and the multiple ballast water tanks are spaced apart on the main body of the underwater vehicle.

[0008] In the above scheme, multiple ballast water tanks can enable the underwater vehicle to discharge the water in the tanks more stably, reducing the impact of drainage on the vehicle's posture. At the same time, since the water in multiple ballast water tanks can be discharged selectively, the underwater vehicle can float at different speeds.

[0009] According to some embodiments of the present application, there are multiple drainage devices, and the multiple drainage devices correspond one-to-one to the multiple ballast water tanks, and the decompression chamber of each drainage device is connected to the corresponding containing compartment.

[0010] In the above scheme, each ballast water tank has a dedicated drainage device, which can individually inject carbon dioxide into the ballast water tank, thereby discharging the water in the ballast water tank and achieving the buoyancy of the underwater vehicle.

[0011] In the built-in phase change drainage system of the embodiment of the present application, each ballast water tank has an independent drainage device to control the amount of water therein, thereby improving the independence of the ballast water tank control.

[0012] According to some embodiments of the present application, a connecting pipeline is connected between the decompression unit and the ballast water tank, and a first on-off valve is provided on the connecting pipeline.

[0013] In the above scheme, the amount of gaseous carbon dioxide entering the ballast water tank from the decompression unit can be selectively controlled by opening and closing the first on-off valve. Optionally, the first on-off valve can adjust the size of the valve port, thereby adjusting the speed of the gaseous carbon dioxide entering the ballast water tank from the decompression unit. In addition, since the first on-off valve is provided on the connecting pipeline, when the first on-off valve is closed, water in the accommodation chamber can be prevented from entering the decompression unit. At the same time, even if the liquid carbon dioxide in the first power unit is converted into gaseous carbon dioxide and enters the decompression unit, it will not enter the ballast water tank, thereby improving the stability of the drainage system.

[0014] According to some embodiments of the present application, the first power unit further has a first outlet, the first storage chamber is in communication with the first outlet, the decompression unit further has a first inlet and a second outlet, the first inlet and the second outlet are both in communication with the decompression chamber; The first power unit further includes a first pressure relief unit, which is blocked between the first inlet and the first outlet, and is configured to open when the pressure in the first storage chamber is greater than a preset value to connect the first inlet with the first outlet.

[0015] In the above scheme, the first pressure relief unit blocks the first inlet and the first outlet in a normal state to prevent liquid carbon dioxide from entering the decompression chamber. The liquid carbon dioxide in the first power unit is converted into gaseous carbon dioxide, causing the pressure in the first power unit to exceed a preset value. The first pressure relief unit opens to connect the first inlet and the first outlet, and the gaseous carbon dioxide enters the decompression unit for decompression.

[0016] According to some embodiments of the present application, the decompression unit includes a plurality of sub-decompression units, and the plurality of sub-decompression units are connected in sequence. Along the arrangement direction of the plurality of sub-decompression units, two of the sub-decompression units at the head and tail ends are respectively provided with a first inlet and a second outlet.

[0017] In the above scheme, multiple sub-decompression chambers are connected in series in sequence, so that the high-pressure gaseous carbon dioxide discharged from the first power unit can enter a sub-decompression chamber for decompression and then be further decompressed in the next sub-decompression chamber, so that the gaseous carbon dioxide can be fully expanded.

[0018] According to some embodiments of the present application, the multiple sub-decompression units include a first decompression unit and a second decompression unit, the decompression chamber includes a first decompression chamber and a second decompression chamber, the first decompression chamber is arranged in the first decompression unit, the second decompression chamber is arranged in the second decompression unit, the first decompression unit is provided with a first inlet, and the second decompression unit is provided with a second outlet; along the first direction, the first power unit and the second decompression unit are both located on the same side of the first decompression unit.

[0019] In the above scheme, the size of the drainage device in the first direction can be reduced, the volume of the drainage device is reduced, and the volume of the drainage device is made more compact. At the same time, the first power unit and the second decompression unit are arranged on the same side of the first decompression unit in the first direction, and the first power unit and the second decompression unit can be conveniently fixed to the first decompression unit.

[0020] According to some embodiments of the present application, the size of the first decompression unit in the first direction is smaller than the size of the first decompression unit in the second direction, the size of the first decompression unit in the first direction is smaller than the size of the first decompression unit in the third direction, along the first direction, the projection of the second decompression unit falls into the central area of ​​the first decompression unit, and the first direction, the second direction and the third direction are perpendicular to each other.

[0021] In the above solution, the first decompression unit is constructed as a flat structure, and the first power unit and the second decompression unit are arranged on the same side of the first decompression unit in the thickness direction. At the same time, the flat first decompression unit reduces the space occupied in the first direction, which facilitates the storage of the drainage device in the first direction.

[0022] In addition, the high-pressure supercritical carbon dioxide discharged from the first power unit can be fully decompressed in the first decompression unit and then enter the second decompression unit from the first inlet, thereby improving the decompression efficiency and decompression effect of the high-pressure supercritical carbon dioxide.

[0023] According to some embodiments of the present application, there are multiple first power units, and along the circumference of the first decompression unit, the multiple first power units are arranged around the second decompression unit.

[0024] In the above scheme, it is ensured that the high-pressure gaseous carbon dioxide discharged from each first power unit can be fully decompressed in the first decompression unit, thereby improving the decompression efficiency.

[0025] According to some embodiments of the present application, the drainage device also includes a pressure plate, which is spaced apart from the first pressure relief unit along the first direction, and the first power unit and the second pressure relief unit are sandwiched between the first pressure relief unit and the pressure plate.

[0026] In the above scheme, by providing a pressure plate, the first power unit and the second pressure reducing unit can be clamped and fixed between the pressure plate and the first pressure reducing unit, so that the drainage device as a whole is more firm and stable.

[0027] According to some embodiments of the present application, the drainage device further includes a pull rod, and along the first direction, two ends of the pull rod are respectively connected to the first decompression unit and the pressure plate.

[0028] In the above solution, the pull rod can fix the first pressure reducing unit and the pressure plate together, thereby improving the structural stability of the drainage device.

[0029] According to some embodiments of the present application, the first power unit also includes an excitation component, which is communicatively connected to the control unit, and the excitation component is arranged in the first storage chamber. The excitation component is constructed to receive a signal from the control unit and generate heat so that the liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide.

[0030] In the above scheme, the excitation component may include an excitation agent, which can be connected to an external control unit for communication. After receiving an excitation signal from the control center, the excitation agent undergoes a chemical reaction to generate heat, causing the liquid carbon dioxide to absorb heat and undergo a phase change to be converted into high-pressure supercritical carbon dioxide.

[0031] According to some embodiments of the present application, the drainage device further includes a second power unit, the second power unit having a second storage chamber and a third outlet, the second storage chamber is communicated with the third outlet, and the second storage chamber stores compressed air; The decompression unit also has a second inlet, and the drainage device also includes a second pressure relief unit, which is blocked between the second inlet and the third outlet. The second pressure relief unit is configured to open when the pressure in the second storage chamber is greater than a preset value to connect the second inlet with the third outlet.

[0032] In the above scheme, the storage chamber (first storage chamber) in the first power unit stores liquid carbon dioxide, and the storage chamber (second storage chamber) in the second power unit stores compressed air. Since compressed air is cheaper than liquid carbon dioxide, storing liquid carbon dioxide and compressed air in the storage chambers of the first and second power units can reduce the use and manufacturing cost of the drainage device. At the same time, different media can be selected to drain the water in the water tank according to different usage scenarios.

[0033] For example, in shallow waters, compressed air can be used to drain water from the water tank, the second pressure relief unit can be opened, and the compressed air can reach the decompression unit through the third outlet and the second inlet, the compressed air is decompressed and expanded in the decompression unit, and thus enters the water tank and drains the water from the water tank, and this method of drainage is economical and practical; in deep waters, liquid carbon dioxide can be used to drain water from the water tank, the first pressure relief unit can be opened, and the liquid carbon dioxide can enter the decompression unit through the first outlet and the first inlet, and after the liquid carbon dioxide is converted into supercritical carbon dioxide, the density of the two differs by dozens of times, and the volume expands greatly, and the liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide to achieve expansion work and drainage, and the drainage efficiency is high; of course, compressed air and carbon dioxide can also be used at the same time to drain water from the water tank, thus taking into account both economy and efficiency.

[0034] According to some embodiments of the present application, a first pressure sensor and a first temperature sensor are disposed in the first storage chamber, and a second pressure sensor and a second temperature sensor are disposed in the second storage chamber.

[0035] In the above scheme, the first pressure sensor can detect the pressure in the first storage chamber in real time. When the pressure in the first storage chamber is abnormal, a warning can be given to the driver and passengers. The control center can automatically take emergency measures according to the signal given by the first pressure sensor. Of course, it can also choose whether to use the medium in the storage chamber for drainage according to the pressure in the first storage chamber. For example, when the pressure in the first storage chamber is insufficient, it is necessary to replace it with another first storage chamber and discharge the hydraulic carbon dioxide in the other first storage chamber to meet the drainage needs of the water tank. When the device is not in use, if the pressure of the first pressure sensor is too low, a warning can be given to the driver and passengers, indicating that the first storage chamber may leak, resulting in an abnormal decrease in pressure.

[0036] The first temperature sensor can detect the temperature in the first storage chamber in real time. When the temperature in the first storage chamber is abnormal, a warning can be given to the driver and passengers. The control center can automatically take emergency measures according to the signal given by the first pressure sensor. For example, when it is detected that the temperature in the first storage chamber is too high, the cooling system can be started, and the cooling system can cool the overheated first storage chamber to ensure the safety of the first power unit.

[0037] When the pressure in the second storage chamber is abnormal, a warning can be given to the driver and passengers, and the control center can automatically take emergency measures based on the signal from the second pressure sensor. Of course, it can also choose whether to use the medium in the storage chamber for drainage based on the pressure in the second storage chamber. For example, when the pressure in the second storage chamber is insufficient, it is necessary to switch to another second storage chamber and discharge the compressed air in the other second storage chamber to meet the drainage needs of the water tank.

[0038] The second temperature sensor can detect the temperature in the second storage chamber in real time. When the temperature in the second storage chamber is abnormal, a warning can be given to the driver and passengers. The control center can automatically take emergency measures according to the signal given by the second pressure sensor. For example, when it is detected that the temperature in the second storage chamber is too high, the cooling system can be started, and the cooling system can cool the overheated second storage chamber to ensure the safety of the first power unit.

[0039] According to some embodiments of the present application, a first energy recovery device is provided at both the first inlet and the second inlet; and / or a second energy recovery device is provided at the first outlet.

[0040] In the above scheme, after liquid carbon dioxide is converted into supercritical carbon dioxide, the density of the two differs by dozens of times and the volume expands greatly, so that carbon dioxide will pass through the first inlet and compressed air will pass through the second inlet at a faster speed; a first energy recovery device is provided at both the first inlet and the second inlet; and / or a second energy recovery device is provided at the first outlet, which can recover the energy of high-speed carbon dioxide or air, for example, by converting kinetic energy into electrical energy through a motor and storing it in an energy storage device for use by underwater navigation equipment.

[0041] According to some embodiments of the present application, the first pressure relief unit is configured as a first valve, which is rotatably disposed on the first power unit or the pressure reducing unit, and the rotation angle of the first valve is adjustable; and / or the second pressure relief unit is configured as a second valve, which is rotatably disposed on the first power unit or the pressure reducing unit, and the rotation angle of the second valve is adjustable.

[0042] In the above scheme, the amount of carbon dioxide discharged can be adjusted by changing the rotation angle of the first valve. For example, the first valve can only open a gap, so that the amount of carbon dioxide discharged from the first storage chamber per unit time is reduced; when the first valve is fully opened, the amount of carbon dioxide discharged from the first storage chamber per unit time is the largest.

[0043] The discharge amount of compressed air can be adjusted by changing the rotation angle of the second valve. For example, the second valve can only open a gap, so that the amount of air discharged from the second storage chamber per unit time is reduced; when the second valve is fully opened, the amount of air discharged from the second storage chamber per unit time is the largest.

[0044] According to some embodiments of the present application, at least a portion of the outer circumference of the first power unit is provided with a first anti-corrosion layer, and at least a portion of the outer circumference of the second power unit is provided with a second anti-corrosion layer.

[0045] In the above scheme, the first power unit and the second power unit are arranged on the outside of the main body of the underwater vehicle, and the first power unit and the second power unit are exposed to water. Therefore, an anti-corrosion layer is arranged on the outer side of the first power unit and the second power unit to reduce the corrosion rate of the first power unit and the second power unit.

[0046] According to some embodiments of the present application, at least a portion of the inner circumference of the first storage chamber is provided with a first thermal insulation layer.

[0047] In the above scheme, since an excitation element is required in the first storage chamber to generate heat, liquid carbon dioxide will be converted into high-pressure supercritical carbon dioxide only after absorbing heat. By providing a first thermal insulation layer on at least a portion of the inner circumference of the first storage chamber, heat loss can be reduced, allowing the liquid carbon dioxide to absorb more heat and thus be converted into more high-pressure supercritical carbon dioxide.

[0048] According to some embodiments of the present application, the containment chamber includes a plurality of mutually independent sub-containment chambers, and the supercritical carbon dioxide enters at least one of the sub-containment chambers after being decompressed in the decompression chamber.

[0049] Therefore, supercritical carbon dioxide can selectively enter different sub-containment chambers, so that the posture of the underwater vehicle can be changed and the stability of the underwater vehicle can be further adjusted by allowing the supercritical carbon dioxide to enter a specific sub-containment chamber.

[0050] In the second aspect, the present application also proposes an underwater vehicle, comprising: a main body and the above-mentioned built-in phase change drainage system, the built-in phase change drainage system comprising a first ballast water tank group and a second ballast water tank group, the first ballast water tank group and the second ballast water tank group are respectively arranged in the left area and the right area of ​​the main body, and the first ballast water tank group and the second ballast water tank group each include at least one ballast water tank.

[0051] According to some embodiments of the present application, the first ballast water tank group includes two ballast water tanks spaced apart in the front-to-rear direction, and the second ballast water tank group includes two ballast water tanks spaced apart in the front-to-rear direction.

[0052] In the above scheme, the underwater vehicle can selectively discharge water from one or more ballast tanks according to the working conditions, thereby improving the adaptability of the underwater vehicle to different working conditions and further ensuring the stable operation of the underwater vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0054] Figure 1 is a schematic diagram of a drainage system according to an embodiment of the present application; Figure 2 is a schematic diagram of a drainage device according to an embodiment of the present application; Figure 3 is a schematic diagram of a decompression unit according to an embodiment of the present application; Figure 4 is a schematic diagram of a drainage device according to another embodiment of the present application; Figure 5 is a cross-sectional view of a first power unit according to an embodiment of the present application; Figure 6 It is a schematic diagram of the cooperation between the pressing plate and the first decompression unit according to an embodiment of the present application; Figure 7 is a schematic diagram of a partition plate according to an embodiment of the present application; Figure 8 is a cross-sectional view of a first power unit according to an embodiment of the present application; Fig. 9 It is a cross-sectional view of a second power unit according to an embodiment of the present application.

[0055] [Description of Reference Numerals] 200: Built-in phase change drainage system; 210: Ballast water tank; 220: control unit; 230: connecting pipeline; 240: first on-off valve; 100: Drainage device; 110: first power unit; 101: first inner wall area; 102: second inner wall area; 111: first peripheral wall; 112: first top wall; 113: first bottom wall; 410: first pressure release unit; 420: first pressure plate; 430: first driving member; 440: first sealing member; 401: first storage chamber; 402: first outlet; 120: second power unit; 121: second peripheral wall; 122: second top wall; 123: second bottom wall; 310: second pressure release unit; 320: second pressure plate; 330: second driving member; 340: second sealing member; 301: second storage chamber; 302: third outlet; 130: decompression unit; 131: first decompression unit; 133: second decompression unit; 103: first inlet; 105: second outlet; 140: raised portion; 150: Pressing plate; 160: blocking plate; 104: second conducting channel; 170: pull rod; 171: elastic member; 180: Overpressure protection device; 190: pressure sensor; The first direction is X; the second direction is Y; the third direction is Z. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0057] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0058] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0059] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0061] The term "multiple" as used in the present application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0062] Currently, when an underwater vehicle encounters unexpected situations such as rudder jamming, water ingress, or falling depth, it is necessary to quickly discharge some of the stored seawater in a short period of time to provide positive buoyancy and enable the underwater vehicle to float safely.

[0063] At present, medium and large underwater vehicles mainly use compressed air drainage system or high-temperature gas drainage system. The compressed air drainage system is to compress and pressurize the air in advance and store it in a high-pressure air bottle. When needed, open the valve on the connecting pipe between the air bottle and the storage water tank to introduce high-pressure air into the water tank to discharge the internal seawater; the high-temperature gas drainage system is to seal the solid agent in the gas generator. When needed, the agent is ignited by an electrical signal to cause a chemical reaction in the agent to form high-temperature gas, which is injected into the water tank to discharge the internal seawater.

[0064] As the working depth of underwater vehicles gradually increases, compressed air drainage is greatly affected by back pressure and the drainage capacity decreases significantly; the carbon monoxide, hydrogen and other gases produced by high-temperature fuel gas drainage have the risk of secondary combustion, which is not conducive to safety.

[0065] To this end, the present application proposes a safe, efficient and highly capable drainage system, which can provide new protection for the navigation safety of underwater vehicles.

[0066] like Figure 1-Figure 9 As shown, the built-in phase change drainage system 200 according to an embodiment of the present application may include a drainage device 100 , a ballast water tank 210 and a control unit 220 .

[0067] The drainage device 100 includes a first power unit 110 and a decompression unit 130 . The first power unit 110 is provided with a first storage chamber 401 for storing liquid carbon dioxide, and the decompression unit 130 is provided with a decompression chamber.

[0068] The decompression chamber in the decompression unit 130 can decompress the carbon dioxide gas discharged into the decompression unit 130. The pressure of the supercritical carbon dioxide discharged from the first storage chamber 401 is very high, and the volume of the carbon dioxide with a higher pressure can further expand in the decompression chamber. Afterwards, the decompressed carbon dioxide can be continuously discharged from the outlet.

[0069] The ballast water tank 210 has a receiving chamber for receiving water, and the receiving chamber can be selectively communicated with the decompression chamber.

[0070] After the supercritical carbon dioxide enters the ballast water tank 210, the water in the ballast water tank 210 can be partially discharged, thereby reducing the gravity of the underwater vehicle and improving the operating stability of the underwater vehicle.

[0071] The control unit 220 is communicatively connected with the first power unit 110. The first power unit 110 is suitable for converting liquid carbon dioxide into high-pressure supercritical carbon dioxide under the control of the control unit 220. The supercritical carbon dioxide enters the containing chamber after being decompressed in the decompression chamber to discharge the water in the containing chamber.

[0072] According to the built-in phase change drainage system 200 of the embodiment of the present application, after the liquid carbon dioxide is converted into supercritical carbon dioxide, its volume expands greatly. The liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide to achieve expansion work and drainage, and the drainage capacity is strong and safe and reliable.

[0073] In addition, the built-in phase change drainage system 200 of the embodiment of the present application can adjust the drainage capacity of the device by adjusting the working time interval between each first power unit 110, so as to achieve the goal of adjusting the drainage capacity according to the working condition requirements. The present invention uses liquid carbon dioxide as the working fluid, which has extremely low cost and can be used again after filling, and has low maintenance and guarantee costs.

[0074] According to some embodiments of the present application, there are multiple ballast water tanks 210, and the multiple ballast water tanks 210 are arranged at intervals on the main body of the underwater vehicle.

[0075] Thus, the multiple ballast water tanks 210 can enable the underwater vehicle to discharge the water in the tanks more stably. At the same time, since the water in the multiple ballast water tanks 210 can be selectively discharged, the underwater vehicle can float at different speeds.

[0076] According to some embodiments of the present application, there are multiple drainage devices 100, and the multiple drainage devices 100 correspond one-to-one to the multiple ballast water tanks 210, and the decompression chamber of each drainage device 100 is connected to the corresponding containing chamber.

[0077] Therefore, each ballast water tank 210 has a dedicated drainage device 100, and the dedicated drainage device 100 can individually inject carbon dioxide into the ballast water tank 210, so as to discharge the water in the ballast water tank 210 and realize the buoyancy of the underwater vehicle.

[0078] In addition, each ballast water tank 210 has an independent drainage device 100 to control the amount of water therein, thereby improving the independence of the control of the ballast water tank 210.

[0079] For example, the number of the ballast water tanks 210 may be four, and the four ballast water tanks 210 may be disposed at the four corners of the body of the underwater vehicle, so that the overall posture of the underwater vehicle can be adjusted by discharging water from different ballast water tanks 210 or absorbing water into different ballast water tanks 210.

[0080] According to some embodiments of the present application, a connecting pipeline 230 is connected between the decompression unit 130 and the ballast water tank 210 , and a first on-off valve 240 is provided on the connecting pipeline 230 .

[0081] Thus, the amount of supercritical carbon dioxide entering the ballast water tank 210 from the decompression unit 130 can be selectively controlled by opening and closing the first on-off valve 240. Optionally, the first on-off valve 240 can adjust the size of the valve port, thereby adjusting the speed of the carbon dioxide entering the ballast water tank 210 from the decompression unit 130. In addition, since the first on-off valve 240 is provided on the connecting pipeline 230, when the first on-off valve 240 is closed, even if the liquid carbon dioxide in the first power unit 110 is converted into supercritical carbon dioxide and enters the decompression unit 130, it will not enter the ballast water tank 210, thereby improving the safety of the built-in phase change drainage system 200.

[0082] According to some embodiments of the present application, the first power unit 110 further has a first outlet 402, the first storage chamber 401 is in communication with the first outlet 402, the decompression unit 130 further has a first inlet 103 and a second outlet 105, both of which are in communication with the decompression chamber; The first power unit 110 further includes a first pressure relief unit 410 , which is blocked between the first inlet 103 and the first outlet 402 . The first pressure relief unit 410 is configured to open when the pressure in the first storage chamber 401 is greater than a preset value to connect the first inlet 103 with the first outlet 402 .

[0083] In the above scheme, the first pressure relief unit 410 blocks the first inlet 103 and the first outlet 402 in the normal state to prevent liquid carbon dioxide from entering the decompression chamber. The liquid carbon dioxide in the first power unit 110 is converted into supercritical carbon dioxide, causing the pressure in the first power unit 110 to exceed the preset value. The first pressure relief unit 410 is opened to connect the first inlet 103 and the first outlet 402, and the high-pressure supercritical carbon dioxide will enter the decompression unit 130 for decompression.

[0084] The water discharge device 100 for an underwater vehicle according to an embodiment of the present application may include a first power unit 110 , a decompression unit 130 , and a first pressure release unit 410 .

[0085] The first power unit 110 has a first storage chamber 401 and a first outlet 402 . The first storage chamber 401 is in communication with the first outlet 402 . The first storage chamber 401 stores liquid carbon dioxide.

[0086] It is understandable that the first power unit 110 can be constructed as a metal tank with sufficient strength, and the metal tank can store liquid or supercritical carbon dioxide at a very high pressure.

[0087] The first outlet 402 is in communication with the first storage chamber 401 . Under certain conditions, the liquid carbon dioxide can be converted into a gaseous state and discharged from the first outlet 402 .

[0088] The decompression unit 130 has a decompression chamber, a first inlet 103 and a second outlet 105 , and both the first inlet 103 and the second outlet 105 are communicated with the decompression chamber.

[0089] As the name implies, the decompression chamber in the decompression unit 130 can decompress the carbon dioxide discharged into the decompression unit 130. The pressure of the gaseous carbon dioxide discharged from the first storage chamber 401 is very high, and the carbon dioxide with a higher pressure can enter the decompression chamber from the first inlet 103, and the volume of the carbon dioxide with a higher pressure can further expand in the decompression chamber. Afterwards, the decompressed carbon dioxide can be continuously discharged from the second outlet 105.

[0090] The first pressure release unit 410 is blocked between the first inlet 103 and the first outlet 402 . The first pressure release unit 410 is configured to rupture when the pressure in the first storage chamber 401 is greater than a preset value to connect the first inlet 103 with the first outlet 402 .

[0091] Optionally, the first pressure release unit 410 may be a one-way valve, and the pressure threshold of the one-way valve is determined. When the pressure in the storage chamber is large enough and exceeds the pressure threshold, the first pressure release unit 410 opens, thereby connecting the first inlet 103 with the first outlet 402. Thus, the high-pressure supercritical carbon dioxide can enter the decompression unit 130 for decompression, and then be discharged from the second outlet 105.

[0092] According to the drainage device 100 of the embodiment of the present application, after the liquid carbon dioxide is converted into supercritical carbon dioxide, its volume expands greatly. The liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide to achieve expansion work and drainage, and the drainage capacity is strong and safe and reliable.

[0093] The drainage device 100 of the embodiment of the present application can adjust the drainage capacity of the device by adjusting the working time interval between each first power unit 110, thereby achieving the goal of adjusting the drainage capacity according to the working condition requirements. The present invention uses liquid carbon dioxide as a working fluid, which has extremely low cost and can be used again after filling, and has low maintenance and guarantee costs.

[0094] According to the drainage device 100 of the embodiment of the present application, the decompression unit 130 includes a plurality of sub-decompression units, which are connected in sequence. Along the arrangement direction of the plurality of sub-decompression units, the two sub-decompression units at the head and tail ends are respectively provided with a first inlet 103 and a second outlet 105.

[0095] It can be understood that a sub-decompression chamber is disposed in each sub-decompression unit, and a plurality of sub-decompression chambers together form the above-mentioned decompression chamber.

[0096] The multiple sub-decompression chambers are connected in series in sequence, so that the high-pressure supercritical carbon dioxide discharged from the first power unit 110 can enter a sub-decompression chamber for decompression and then be further decompressed in the next sub-decompression chamber, so that the supercritical carbon dioxide can be fully decompressed and expanded.

[0097] In some embodiments of the present application, multiple sub-decompression units include a first decompression unit 131 and a second decompression unit 133, the decompression chamber includes a first decompression chamber and a second decompression chamber, the first decompression chamber is arranged in the first decompression unit 131, and the second decompression chamber is arranged in the second decompression unit 133, the first decompression unit 131 is provided with a first inlet 103, and the second decompression unit 133 is provided with a second outlet 105.

[0098] The first decompression chamber and the second decompression chamber are connected in series, and along the flow direction of carbon dioxide, the first decompression chamber is closer to the first power unit 110 than the second decompression chamber. After the first pressure release unit 410 is opened, the high-pressure supercritical carbon dioxide in the first power unit 110 will first enter the first decompression chamber for decompression, then enter the second decompression chamber for decompression, and finally be discharged from the second exhaust port.

[0099] like Figure 7 As shown, the first decompression chamber and the second decompression chamber may be separated by a blocking plate 160 , and the blocking plate 160 is provided with a second conducting channel 104 connecting the first decompression chamber and the second decompression chamber.

[0100] Along the exhaust direction, the cross-sectional area of ​​the second conducting channel 104 gradually increases, thereby enabling the carbon dioxide to be decompressed in advance before entering the second decompression chamber, thereby further increasing the volume of the carbon dioxide.

[0101] According to some embodiments of the present application, along the first direction X, the first power unit 110 and the second decompression unit 133 are both located on the same side of the first decompression unit 131. This can reduce the size of the drainage device 100 in the first direction X, reduce the volume of the drainage device 100, and make the volume of the drainage device 100 more compact. At the same time, the first power unit 110 and the second decompression unit 133 are arranged on the same side of the first decompression unit 131 in the first direction X, and the first power unit 110 and the second decompression unit 133 can also be conveniently fixed to the first decompression unit 131.

[0102] In some embodiments of the present application, the size of the first decompression unit 131 in the first direction X is smaller than the size of the first decompression unit 131 in the second direction Y, the size of the first decompression unit 131 in the first direction X is smaller than the size of the first decompression unit 131 in the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0103] That is, the first decompression unit 131 is constructed as a flat structure, and the first power unit 110 and the second decompression unit 133 are arranged on the same side of the first decompression unit 131 in the thickness direction. At the same time, the flat first decompression unit 131 reduces the space occupied in the first direction X, which facilitates the storage of the drainage device 100 in the first direction X.

[0104] According to some embodiments of the present application, along the first direction X, the projection of the second decompression unit 133 falls into the central area of ​​the first decompression unit 131. Therefore, the high-pressure gaseous carbon dioxide discharged from the first power unit 110 can enter the second decompression unit 133 from the first inlet 103 after being fully decompressed in the first decompression unit 131, thereby improving the decompression efficiency and decompression effect of the high-pressure gaseous carbon dioxide.

[0105] In some embodiments of the present application, there are multiple first power units 110, and along the circumference of the first decompression unit 131, the multiple first power units 110 are arranged around the second decompression unit 133. The drainage device 100 may include multiple first power unit groups, each first power unit group includes multiple first power units 110, and the multiple first power units 110 are arranged in sequence along the circumference of the first decompression unit 131, and the multiple first power unit groups are arranged in sequence along the radial direction of the first decompression unit 131.

[0106] Thereby, it is ensured that the high-pressure supercritical carbon dioxide discharged from each first power unit 110 can be fully decompressed in the first decompression unit 131, thereby improving the decompression efficiency.

[0107] In some embodiments of the present application, the drainage device 100 also includes a pressure plate 150 , which is spaced apart from the first pressure reducing unit 131 along the first direction X, and the first power unit 110 and the second pressure reducing unit 133 are sandwiched between the first pressure reducing unit 131 and the pressure plate 150 .

[0108] The first power unit 110 may be a cylindrical structure extending along the first direction X. Similarly, the second decompression unit 133 may also be a cylindrical structure extending along the first direction X. In order to facilitate simultaneous fixing of the first power unit 110 and the second decompression unit 133, the size of the first power unit 110 in the first direction X is substantially the same as the size of the second decompression unit 133 in the first direction X.

[0109] By providing the pressing plate 150 , the first power unit 110 and the second decompression unit 133 can be clamped and fixed between the pressing plate 150 and the first decompression unit 131 , so that the drainage device 100 as a whole is more firm and stable.

[0110] According to some embodiments of the present application, the drainage device 100 further includes a pull rod 170 , and along the first direction X, two ends of the pull rod 170 are respectively connected to the first decompression unit 131 and the pressure plate 150 .

[0111] The pull rod 170 can tighten the pressing plate 150 and the first decompression unit 131. The pull rod 170 can be configured as a long bolt, one end of the bolt head stops at one of the first decompression unit 131 and the pressing plate 150, and the bolt rod can pass through the other of the first decompression unit 131 and the pressing plate 150 and be fastened by a nut. By tightening or loosening the nut, the distance between the pressing plate 150 and the first decompression unit 131 can be changed, thereby fixing the pressing plate 150 and the first decompression unit 131, or disassembling the pressing plate 150 and the first decompression unit 131.

[0112] According to some embodiments of the present application, Figure 6 As shown, the drainage device also includes a plurality of elastic members 171, and the plurality of elastic members 171 correspond to the plurality of pull rods 170 one by one. Each elastic member 171 is sleeved on the corresponding pull rod 170, and the two ends of the elastic member 171 are respectively tightened with the pressure plate 150 and the first decompression unit 131, so that the elastic member 171 can play a buffering role to prevent the pressure plate 150 and the first decompression unit 131 from being too close to each other and crushing the first decompression unit 131 and / or the second decompression unit 132. Optionally, the elastic member 171 can be a coil spring or a rubber sleeve, which is not limited here.

[0113] According to some embodiments of the present application, the drainage device 100 further includes a pressure sensor 190 , which is disposed in the first decompression unit 131 to detect changes in the carbon dioxide pressure in the first decompression unit 131 .

[0114] Thus, the carbon dioxide pressure in the first decompression unit 131 can be known in real time, so that one or more first pressure release units 410 can be selectively opened to introduce carbon dioxide from one or more first power units 110 into the first decompression unit 131 .

[0115] According to some embodiments of the present application, the drainage device 100 further includes an overpressure protection device 180, which is disposed in the first decompression unit 131 to protect the first decompression unit 131 and the second decompression unit 133. As the name implies, the overpressure protection device 180 can play a protective role, reducing the probability of damaging the first decompression unit 131 and the second decompression unit 133 due to excessive pressure in the first decompression unit 131.

[0116] When the carbon dioxide pressure in the first decompression unit 131 exceeds the designed safety value, the overpressure protection device 180 can automatically open and release carbon dioxide and reduce the pressure to protect the structural safety of the first decompression unit 131 and the second decompression unit 133.

[0117] In some embodiments of the present application, a rectifying member is provided in the second decompression chamber. The rectifying member can sort out the flow of carbon dioxide in the second decompression chamber so that the carbon dioxide can be discharged from the second outlet 105 at a relatively gentle pressure. Of course, the rectifying member can further disturb the gaseous carbon dioxide, thereby improving the decompression efficiency.

[0118] Optionally, Figure 5 As shown, the fairing can be arranged on the inner wall of the second decompression unit 133, and the fairing can be configured as a protrusion 140 protruding from the inner wall of the second decompression unit 133. Along the first direction X, the inner wall of the second decompression unit 133 can be divided into a plurality of inner wall areas, the plurality of inner wall areas including adjacent first inner wall areas 101 and second inner wall areas 102, the first inner wall area 101 is closer to the first decompression unit 131 than the second inner wall area 102, and the density of the protrusion 140 of the first inner wall area 101 is greater than the density of the protrusion 140 of the second inner wall area 102. That is, the number of the protrusions 140 per unit area of ​​the first inner wall area 101 is greater than the number of the protrusions 140 per unit area of ​​the second inner wall area 102. Thus, the pressure of the gaseous carbon dioxide can be made more uniform.

[0119] According to some embodiments of the present application, the first power unit 110 also includes an excitation component, which is disposed in the first storage chamber 401. The excitation component is communicatively connected to the control unit, and the excitation component is constructed to receive a signal from the control center and generate heat so that the liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide.

[0120] The excitation component may include an excitation agent, which may be connected to an external control center for communication. Upon receiving an excitation signal from the control center, the excitation agent undergoes a chemical reaction to generate heat, causing the liquid carbon dioxide to absorb heat and undergo a phase change to convert into high-pressure supercritical carbon dioxide.

[0121] According to some embodiments of the present application, Figure 4As shown, the drainage device also includes a second power unit 120, the second power unit 120 has a second storage chamber 301 and a third outlet 302, the second storage chamber 301 is connected to the third outlet 302, and the second storage chamber 301 stores compressed air; the decompression unit also has a second inlet, and the drainage device also includes a second pressure relief unit 310, the second pressure relief unit 310 is blocked between the second inlet and the third outlet 302, and the second pressure relief unit 310 is configured to open when the pressure in the second storage chamber 301 is greater than a preset value to connect the second inlet with the third outlet 302.

[0122] In the above solution, the storage chamber (first storage chamber 401) in the first power unit 110 stores liquid carbon dioxide, and the storage chamber (second storage chamber 301) in the second power unit 120 stores compressed air. Since compressed air is cheaper than liquid carbon dioxide, storing liquid carbon dioxide and compressed air in the storage chambers of the first power unit 110 and the second power unit 120 respectively can reduce the use cost of the drainage device. At the same time, different media can be selected to drain the water in the water tank according to different usage scenarios.

[0123] For example, in shallow water areas, compressed air can be used to drain the water in the water tank, the second pressure relief unit 310 can be opened, and the compressed air can reach the decompression unit through the third outlet 302 and the second inlet, and the compressed air is decompressed and expanded in the decompression unit, thereby entering the water tank and discharging the water in the water tank. This method of drainage is economical and practical; in deep water areas, liquid carbon dioxide can be used to drain the water in the water tank, the first pressure relief unit 410 can be opened, and the liquid carbon dioxide can enter the decompression unit through the first outlet 402 and the first inlet 103. After the liquid carbon dioxide is converted into supercritical carbon dioxide, the density of the two differs by dozens of times, and the volume expands greatly. The liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide to achieve expansion work and drainage, and the drainage efficiency is high; of course, compressed air and carbon dioxide can also be used at the same time to drain the water in the water tank, thereby taking into account both economy and efficiency.

[0124] In some embodiments of the present application, Figure 8 As shown, a first pressure plate 420 may be provided in the first power unit 110. The first pressure plate 420 may be slidably provided in the first power unit 110 along the axis of the first power unit 110. The first pressure plate 420 may be driven by a first driving member 430, so that when the carbon dioxide in the first power unit 110 is discharged outward, the carbon dioxide may be squeezed, so that the space where the carbon dioxide in the first power unit 110 is located always maintains a certain pressure, thereby ensuring that the carbon dioxide can be smoothly discharged outward under the action of its own pressure.

[0125] Furthermore, the first power unit 110 includes a first circumferential wall 111, a first top wall 112 and a first bottom wall 113, the first circumferential wall 111 is a rotating body, the first circumferential wall 111 and the first top wall 112 enclose a space for accommodating carbon dioxide, the first outlet 402 is arranged on the first top wall 112, the first driving member 430 is arranged on the first bottom wall 113 and the driving end of the first driving member 430 is connected to the first pressure plate 420, and the first pressure plate 420 and the first circumferential wall 111 are connected via a first sealing member 440.

[0126] In some embodiments of the present application, Fig. 9 As shown, a second pressure plate 320 may be provided in the second power unit 120. The second pressure plate 320 may be slidably provided in the second power unit 120 along the axis of the second power unit 120. The second pressure plate 320 may be driven by a second driving member 330, so that when the air in the second power unit 120 is discharged outward, the air may be squeezed, so that the space where the air in the second power unit 120 is located always maintains a certain pressure, thereby ensuring that the air can be discharged smoothly outward under the action of its own pressure.

[0127] Furthermore, the second power unit 120 includes a second circumferential wall 121, a second top wall 122 and a second bottom wall 123, the second circumferential wall 121 is a rotating body, the second circumferential wall 121 and the second top wall 122 enclose a space for accommodating air, the third outlet 302 is arranged on the second top wall 122, the second driving member 330 is arranged on the second bottom wall 123 and the driving end of the second driving member 330 is connected to the second pressure plate 320, and the second pressure plate 320 and the second circumferential wall 121 are connected via a second sealing member 340.

[0128] It is understandable that there may be multiple second power units 120 , and the multiple second power units 120 , the multiple first power units 110 , and the second decompression unit 133 are all located on the same side of the first decompression unit 131 .

[0129] Each of the plurality of first power units 110 and the plurality of second power units 120 may be clamped between the first decompression unit 131 and the pressing plate 150 .

[0130] Of course, it can be understood that the second power unit 120 can be a cylindrical structure extending along the first direction X, and the dimensions of the second power unit 120 in the first direction X are roughly the same as the dimensions of the first power unit 110 in the first direction X and the dimensions of the second decompression unit 133 in the first direction X.

[0131] By providing the pressing plate 150 , the first power unit 110 , the second power unit 120 and the second decompression unit 133 can be clamped and fixed between the pressing plate 150 and the first decompression unit 131 , thereby making the drainage device 100 more solid and stable as a whole.

[0132] According to some embodiments of the present application, a first pressure sensor and a first temperature sensor are disposed in the first storage chamber 401 , and a second pressure sensor and a second temperature sensor are disposed in the second storage chamber 301 .

[0133] In the above scheme, the first pressure sensor can detect the pressure in the first storage chamber 401 in real time. When the pressure in the first storage chamber 401 is abnormal, a warning can be given to the driver and passengers. The control center can automatically take emergency measures according to the signal given by the first pressure sensor. Of course, it can also choose whether to use the medium in the first storage chamber 401 for drainage according to the pressure in the first storage chamber 401. For example, when the pressure in the first storage chamber 401 is insufficient, it is necessary to replace it with another first storage chamber 401 and discharge the hydraulic carbon dioxide in the other first storage chamber 401 to meet the drainage needs of the water tank. When not in use, if the pressure of the first pressure sensor is too low, a warning can be given to the driver and passengers, indicating that the first storage chamber 401 may leak, resulting in an abnormal decrease in pressure.

[0134] The first temperature sensor can detect the temperature in the first storage chamber 401 in real time. When the temperature in the first storage chamber 401 is abnormal, a warning can be given to the driver and passengers, and the control center can automatically take emergency measures according to the signal given by the first pressure sensor. For example, when it is detected that the temperature in the first storage chamber 401 is too high, the cooling system can be started, and the cooling system can cool the overheated first storage chamber 401 to ensure the safety of the first power unit 110.

[0135] When the pressure in the second storage chamber 301 is abnormal, a warning can be given to the driver and passengers, and the control center can automatically take emergency measures based on the signal from the second pressure sensor. Of course, it can also choose whether to use the medium in the second storage chamber for drainage based on the pressure in the second storage chamber 301. For example, when the pressure in the second storage chamber 301 is insufficient, it is necessary to replace it with another second storage chamber 301 and discharge the compressed air in the other second storage chamber 301 to meet the drainage needs of the water tank.

[0136] The second temperature sensor can detect the temperature in the second storage chamber 301 in real time. When the temperature in the second storage chamber 301 is abnormal, a warning can be given to the driver and passengers, and the control center can automatically take emergency measures according to the signal given by the second pressure sensor. For example, when it is detected that the temperature in the second storage chamber 301 is too high, the cooling system can be started, and the cooling system can cool the overheated second storage chamber 301 to ensure the safety of the second power unit 120.

[0137] For example, a first cooling water channel may be provided on the first power unit 110, and the first cooling water channel may surround the first storage chamber 401, and a second cooling water channel may be provided on the second power unit 120, and the second cooling water channel may surround the second storage chamber 301. Of course, the first power unit 110 and the second power unit 120 may be placed outside the main body of the underwater vehicle, that is, the first power unit 110 and the second power unit 120 are always in contact with water.

[0138] According to some embodiments of the present application, a first energy recovery device is disposed at both the first inlet 103 and the second inlet; and / or a second energy recovery device is disposed at the first outlet 402 .

[0139] In the above scheme, after liquid carbon dioxide is converted into supercritical carbon dioxide, the density of the two differs by dozens of times and the volume expands greatly, so that carbon dioxide passes through the first inlet 103 and compressed air passes through the second inlet at a faster speed; a first energy recovery device is provided at both the first inlet 103 and the second inlet; and / or a second energy recovery device is provided at the first outlet 402, which can recover the energy of high-speed carbon dioxide or air, for example, converting kinetic energy into electrical energy through a motor and storing it in an energy storage device for use by underwater navigation equipment.

[0140] For example, the first energy recovery device and the second energy recovery device can both be generators, and the turbine of the generator can be connected to the first inlet 103, the second inlet or the first outlet 402. The high-speed moving medium (carbon dioxide or air) can drive the turbine to rotate, thereby moving the rotor of the generator to realize the power generation function.

[0141] According to some embodiments of the present application, the first pressure relief unit 410 is configured as a first valve, which is rotatably disposed on the first power unit 110 or the pressure reducing unit, and the rotation angle of the first valve is adjustable; and / or the second pressure relief unit 310 is configured as a second valve, which is rotatably disposed on the first power unit 110 or the pressure reducing unit, and the rotation angle of the second valve is adjustable.

[0142] In the above scheme, the amount of carbon dioxide discharged can be adjusted by changing the rotation angle of the first valve. For example, the first valve can only open a gap, so that the amount of carbon dioxide discharged from the first storage chamber 401 per unit time is reduced; when the first valve is fully opened, the amount of carbon dioxide discharged from the first storage chamber 401 per unit time is the largest.

[0143] The amount of compressed air discharged can be adjusted by changing the rotation angle of the second valve. For example, the second valve can be opened only a gap, so that the amount of air discharged from the second storage chamber 301 per unit time is reduced; when the second valve is fully opened, the amount of air discharged from the second storage chamber 301 per unit time is the largest.

[0144] According to some embodiments of the present application, at least a portion of the outer circumference of the first power unit 110 is provided with a first anti-corrosion layer, and at least a portion of the outer circumference of the second power unit 120 is provided with a second anti-corrosion layer.

[0145] In the above scheme, the first power unit 110 and the second power unit 120 are arranged on the outside of the main body of the underwater vehicle, and the first power unit 110 and the second power unit 120 are exposed to water. Therefore, an anti-corrosion layer is arranged on the outer side of the first power unit 110 and the second power unit 120, which can reduce the corrosion rate of the first power unit 110 and the second power unit 120.

[0146] According to some embodiments of the present application, at least a portion of the inner circumference of the first storage chamber 401 is provided with a first thermal insulation layer.

[0147] In the above scheme, since an excitation element is required to generate heat in the first storage chamber 401, liquid carbon dioxide will be converted into high-pressure supercritical carbon dioxide only after absorbing heat. By providing a first thermal insulation layer on at least a portion of the inner circumference of the first storage chamber 401, heat loss can be reduced, allowing the liquid carbon dioxide to absorb more heat and thus be converted into more high-pressure supercritical carbon dioxide.

[0148] According to some embodiments of the present application, the containment chamber includes a plurality of mutually independent sub-containment chambers, and the supercritical carbon dioxide enters at least one of the sub-containment chambers after being decompressed in the decompression chamber.

[0149] Therefore, supercritical carbon dioxide can selectively enter different sub-containment chambers, so that the posture of the underwater vehicle can be changed and the stability of the underwater vehicle can be further adjusted by allowing the supercritical carbon dioxide to enter a specific sub-containment chamber.

[0150] For example, the accommodating chamber includes a plurality of sub-accommodating chamber groups, which are arranged in sequence along a first direction X, and each sub-accommodating chamber group includes a plurality of sub-accommodating chambers arranged in sequence in a second direction Y, and the first direction X, the second direction Y and the vertical direction are perpendicular to each other.

[0151] When the underwater vehicle's posture is tilted, supercritical carbon dioxide can be injected into the sub-containment chamber in the corner to offset the tilted posture of the underwater vehicle and restore the underwater vehicle to a neutral vertical posture; when the underwater vehicle needs to move in a vertical direction, supercritical carbon dioxide can be injected into the sub-containment chamber in the middle area.

[0152] Optionally, two adjacent sub-containment chambers can be selectively connected, for example, they can be disconnected or connected by an on-off valve. Thus, supercritical carbon dioxide can be quickly injected into a plurality of different sub-containment chambers when needed, and the attitude of the underwater vehicle can be further adjusted by injecting supercritical carbon dioxide into different sub-containment chambers.

[0153] Optionally, at least one guide plate is further provided in each sub-containment compartment, and the guide plate is rotatably provided in the ballast water tank, so that when the guide plate is rotated to a preset angle, when the supercritical carbon dioxide discharges the water in the sub-containment compartment, the guide plate has an optimal guide effect, allowing the water to be discharged at the fastest speed.

[0154] Specifically, the guide plate can be constructed in a spiral shape, and the spiral guide plate can separate the sub-accommodation chamber into a spiral guide waterway, thereby increasing the centrifugal force of the water flow and accelerating the discharge of water from the sub-accommodation chamber to the outside.

[0155] According to an embodiment of the present application, the underwater vehicle includes a main body and the above-mentioned built-in phase change drainage system 200, and the built-in phase change drainage system 200 includes a first ballast water tank group and a second ballast water tank group. The first ballast water tank group and the second ballast water tank group are respectively arranged in the left area and the right area of ​​the main body, and the first ballast water tank group and the second ballast water tank group each include at least one ballast water tank 210.

[0156] Since the underwater vehicle according to the embodiment of the present application is provided with the above-mentioned built-in phase change drainage system 200, the drainage capacity can be adjusted as needed, thereby achieving the goal of adjusting the drainage capacity according to working conditions, so that the underwater vehicle can adapt to more scenarios.

[0157] According to some embodiments of the present application, the first ballast water tank group includes two ballast water tanks 210 spaced apart in the front-to-rear direction, and the second ballast water tank group includes two ballast water tanks 210 spaced apart in the front-to-rear direction.

[0158] Thus, the underwater vehicle can selectively discharge the water in one or more ballast water tanks 210 according to the working conditions, thereby improving the adaptability of the underwater vehicle to different working conditions and further ensuring the stable operation of the underwater vehicle.

[0159] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0160] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0161] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0162] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A built-in phase change drainage system, characterized in that: include: The drainage device comprises a first power unit and a decompression unit, wherein the first power unit is provided with a first storage chamber for storing liquid carbon dioxide, and the decompression unit is provided with a decompression chamber; a ballast water tank having a receiving chamber for receiving water, the receiving chamber being selectively connected to the decompression chamber; A control unit is communicatively connected with the first power unit. The first power unit is suitable for converting liquid carbon dioxide into high-pressure supercritical carbon dioxide under the control of the control unit. The supercritical carbon dioxide enters the containing chamber after being decompressed by the decompression chamber to discharge water in the containing chamber.

2. The built-in phase change drainage system according to claim 1, characterized in that: There are multiple ballast water tanks, and the multiple ballast water tanks are arranged at intervals on the main body of the underwater vehicle.

3. The built-in phase change drainage system according to claim 2, characterized in that: There are multiple drainage devices, and the multiple drainage devices correspond one-to-one to the multiple ballast water tanks. The decompression chamber of each drainage device is connected to the corresponding accommodating chamber.

4. The built-in phase change drainage system according to any one of claims 1 to 3, characterized in that: A connecting pipeline is connected between the decompression unit and the ballast water tank, and a first on-off valve is arranged on the connecting pipeline.

5. The built-in phase change drainage system according to claim 1, characterized in that: The first power unit further comprises a first outlet, the first storage chamber is in communication with the first outlet, the decompression unit further comprises a first inlet and a second outlet, both the first inlet and the second outlet are in communication with the decompression chamber; The first power unit further includes a first pressure relief unit, which is blocked between the first inlet and the first outlet, and is configured to open when the pressure in the first storage chamber is greater than a preset value to connect the first inlet with the first outlet.

6. The built-in phase change drainage system according to claim 5, characterized in that: The decompression unit includes a plurality of sub-decompression units, which are connected in sequence. Along the arrangement direction of the plurality of sub-decompression units, two of the sub-decompression units at the head and tail ends are respectively provided with a first inlet and a second outlet.

7. The built-in phase change drainage system according to claim 6, characterized in that: The plurality of decompression sub-units include a first decompression unit and a second decompression unit, the decompression chamber includes a first decompression chamber and a second decompression chamber, the first decompression chamber is arranged in the first decompression unit, the second decompression chamber is arranged in the second decompression unit, the first decompression unit is provided with a first inlet, and the second decompression unit is provided with a second outlet; Along the first direction, the first power unit and the second decompression unit are both located on the same side of the first decompression unit.

8. The built-in phase change drainage system according to claim 7, characterized in that: The size of the first decompression unit in the first direction is smaller than the size of the first decompression unit in the second direction, and the size of the first decompression unit in the first direction is smaller than the size of the first decompression unit in the third direction. Along the first direction, the projection of the second decompression unit falls into the central area of ​​the first decompression unit, and the first direction, the second direction and the third direction are perpendicular to each other.

9. The built-in phase change drainage system according to claim 8, characterized in that: There are a plurality of the first power units, and along the circumference of the first decompression unit, the plurality of the first power units are arranged around the second decompression unit.

10. The built-in phase change drainage system according to claim 7, characterized in that: The drainage device further includes a pressing plate, which is spaced apart from the first decompression unit along the first direction, and the first power unit and the second decompression unit are sandwiched between the first decompression unit and the pressing plate.

11. The built-in phase change drainage system according to claim 10, characterized in that: The drainage device further includes a pull rod, and along the first direction, two ends of the pull rod are respectively connected to the first decompression unit and the pressure plate.

12. The built-in phase change drainage system according to claim 5, characterized in that: The first power unit also includes an excitation component, which is communicatively connected to the control unit and is disposed in the first storage chamber. The excitation component is configured to receive a signal from the control unit and generate heat so that the liquid carbon dioxide absorbs heat and is converted into high-pressure supercritical carbon dioxide.

13. The built-in phase change drainage system according to claim 5, characterized in that: The drainage device further comprises a second power unit, the second power unit having a second storage chamber and a third outlet, the second storage chamber is in communication with the third outlet, and the second storage chamber stores compressed air; The decompression unit also has a second inlet, and the drainage device also includes a second pressure relief unit, which is blocked between the second inlet and the third outlet. The second pressure relief unit is configured to open when the pressure in the second storage chamber is greater than a preset value to connect the second inlet with the third outlet.

14. The built-in phase change drainage system according to claim 13, characterized in that: A first pressure sensor and a first temperature sensor are disposed in the first storage chamber, and a second pressure sensor and a second temperature sensor are disposed in the second storage chamber.

15. The built-in phase change drainage system according to claim 13, characterized in that: A first energy recovery device is disposed at both the first inlet and the second inlet; and / or A second energy recovery device is provided at the first outlet.

16. The built-in phase change drainage system according to claim 13, characterized in that: The first pressure release unit is configured as a first valve, the first valve is rotatably disposed on the first power unit or the pressure reducing unit, and the rotation angle of the first valve is adjustable; and / or The second pressure relief unit is configured as a second valve, and the second valve is rotatably disposed on the first power unit or the pressure relief unit, and a rotation angle of the second valve is adjustable.

17. The built-in phase change drainage system according to claim 13, characterized in that: At least a portion of the outer circumference of the first power unit is provided with a first anti-corrosion layer, and at least a portion of the outer circumference of the second power unit is provided with a second anti-corrosion layer.

18. The built-in phase change drainage system according to claim 1, characterized in that: At least a portion of the inner circumferential surface of the first storage chamber is provided with a first heat insulating layer.

19. The built-in phase change drainage system according to claim 1, characterized in that: The storage chamber includes a plurality of mutually independent sub-storage chambers, and the supercritical carbon dioxide enters at least one of the sub-storage chambers after being decompressed by the decompression chamber.

20. An underwater vehicle, characterized in that: include: main body; The built-in phase change drainage system according to any one of claims 1 to 19; Wherein, the built-in phase change drainage system includes a first ballast water tank group and a second ballast water tank group, the first ballast water tank group and the second ballast water tank group are respectively arranged in the left area and the right area of ​​the main body, and the first ballast water tank group and the second ballast water tank group each include at least one ballast water tank.

21. The underwater vehicle according to claim 20, characterized in that: The first ballast water tank group includes two ballast water tanks spaced apart in the front-rear direction, and the second ballast water tank group includes two ballast water tanks spaced apart in the front-rear direction.

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