Method, device and equipment for determining phase change drainage capacity of underwater vehicle and medium

Abstract

The invention relates to the technical field of drainage capacity calculation, and discloses a phase change drainage capacity determination method, device and equipment of an underwater vehicle and a medium, a drainage cabin of the underwater vehicle is connected with a drainage adjusting unit, and the drainage adjusting unit controls drainage of the drainage cabin through volume change caused by phase change of a target drainage medium; the method comprises the following steps: performing phase change drainage calculation on a target drainage medium according to design working parameters of the underwater vehicle to obtain theoretical drainage capacity of the underwater vehicle; performing medium energy loss calculation on the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle to obtain predicted phase change energy loss corresponding to the target drainage medium; and performing energy loss correction on the theoretical drainage capacity by utilizing the predicted phase change energy loss to obtain the actual drainage capacity of the underwater vehicle. The method has the beneficial effects that the influence of the structural design of the underwater vehicle on the phase change of the target drainage medium is fully considered, and the accuracy of the obtained drainage capacity is improved.

Description

Technical Field

[0001] The present application relates to the technical field of drainage capacity calculation, and particularly to a method, device, equipment and medium for determining the phase change drainage capacity of an underwater vehicle. Background Art

[0002] With the continuous development of underwater vehicle technology, an underwater vehicle can flexibly change the buoyancy it receives underwater by increasing or decreasing the amount of water stored in the drainage tank, and further change its navigation state during underwater navigation. According to the designed working parameters of the underwater vehicle, determining its drainage capacity is an important step in the design process of the underwater vehicle and is related to the safety of the underwater vehicle during underwater navigation. In the related art, the drainage capacity of an underwater vehicle is usually directly determined according to the volume of the medium used by the drainage adjustment unit, and the same method cannot be applied to the drainage adjustment unit that uses the phase change of the drainage medium for drainage. In the related art, the accuracy of determining the drainage capacity still needs to be improved. Summary of the Invention

[0003] The present application provides a method, device, equipment and medium for determining the phase change drainage capacity of an underwater vehicle, which corrects the theoretical drainage capacity of the target drainage medium according to the energy loss generated by friction or heat exchange during the corresponding drainage process of the target drainage medium, fully considers the influence of the structural design of the underwater vehicle on the phase change of the target drainage medium, and improves the accuracy of the obtained drainage capacity.

[0004] To achieve the above object, the main technical solutions adopted in the present application include: In a first aspect, an embodiment of the present application provides a method for determining the phase change drainage capacity of an underwater vehicle. The drainage tank of the underwater vehicle is connected with a drainage adjustment unit that uses a target drainage medium, and the drainage adjustment unit controls the drainage of the drainage tank through the volume change caused by the phase change of the target drainage medium. The method includes: Performing phase change drainage calculation on the target drainage medium according to the designed working parameters of the underwater vehicle to obtain the theoretical drainage capacity of the underwater vehicle; wherein, the designed working parameters are used to describe the working environment of the underwater vehicle during underwater navigation; Calculating the medium energy loss during the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle to obtain the predicted phase change energy loss corresponding to the target drainage medium; wherein, the predicted phase change energy loss is used to describe the energy loss generated by friction or heat exchange during the corresponding drainage process of the target drainage medium when the underwater vehicle is navigating underwater; Using the predicted phase change energy loss to correct the energy loss of the theoretical drainage capacity to obtain the actual drainage capacity of the underwater vehicle.

[0005] The method for determining the phase change drainage capacity of an underwater vehicle proposed in the embodiments of the present application calculates the medium energy loss according to the structural design parameters of the underwater vehicle, and obtains the predicted phase change energy loss that occurs during the transportation of the target drainage medium after phase change; and uses the predicted phase change energy loss to correct the energy loss of the theoretical drainage capacity of the underwater vehicle when using the target drainage medium, so as to obtain the actual drainage capacity of the underwater vehicle. Compared with the related art, the present application considers the influence of the structural design of the underwater vehicle on the target drainage medium after phase change, calculates the energy loss generated by friction or heat exchange during the corresponding drainage process of the target drainage medium, so as to determine the degree of volume change that the target drainage medium can actually be used for through phase change, thereby effectively improving the accuracy of the obtained drainage capacity and improving the reliability of the underwater vehicle design process.

[0006] Optionally, the drainage adjustment unit and the drainage tank are connected through a transmission pipeline, and the structural design parameters include the pipeline structure parameters of the transmission pipeline and the chamber structure parameters of the drainage tank; the calculation of the medium energy loss during the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle to obtain the predicted phase change energy loss corresponding to the target drainage medium includes: Calculating the energy loss during the transportation of the target drainage medium in the transmission pipeline according to the pipeline structure parameters and the pipeline medium state parameters of the target drainage medium to obtain pipeline energy loss data; Calculating the energy loss during the drainage process of the target drainage medium in the drainage tank according to the chamber structure parameters and the chamber medium state parameters of the target drainage medium to obtain chamber energy loss data; Obtaining the predicted phase change energy loss according to the pipeline energy loss data and the chamber energy loss data.

[0007] Optionally, the pipeline structure parameters include the along - the - line structure parameters and the local structure parameters; the calculation of the energy loss during the transportation of the target drainage medium in the transmission pipeline according to the pipeline structure parameters and the pipeline medium state parameters of the target drainage medium to obtain pipeline energy loss data includes: Analyzing the flow friction characteristics of the target drainage medium according to the along - the - line structure parameters and the pipeline medium state parameters to obtain the friction coefficient of the target drainage medium; Performing along - the - line friction calculation on the target drainage medium using the friction coefficient and the along - the - line structure parameters to obtain the along - the - line energy loss data of the target drainage medium; Perform a local resistance calculation on the target drainage medium according to the local structure parameters and the pipeline medium state parameters to obtain local energy loss data of the target drainage medium; Obtain the pipeline energy loss data according to the along - the - path energy loss data and the local energy loss data.

[0008] Optionally, the energy loss calculation for the drainage process of the target drainage medium in the drainage tank according to the cabin structure parameters and the cabin medium state parameters of the target drainage medium to obtain cabin energy loss data includes: Perform an analysis of the convective heat transfer characteristics of the target drainage medium according to the cabin structure parameters and the cabin medium state parameters of the target drainage medium to obtain the convective heat transfer coefficient of the target drainage medium; Perform a heat exchange calculation on the cabin wall of the target drainage medium using the convective heat transfer coefficient and the cabin structure parameters to obtain the cabin wall energy loss data of the target drainage medium.

[0009] Optionally, the energy loss correction of the theoretical drainage capacity using the predicted phase - change energy loss to obtain the actual drainage capacity of the underwater vehicle includes: Perform a ratio calculation based on the predicted phase - change energy loss and the phase - change energy provided by the underwater vehicle to the target drainage medium to obtain an energy loss ratio; Correct the theoretical drainage capacity using the energy loss ratio to obtain the actual drainage capacity.

[0010] Optionally, the designed working parameters include the working pressure data, working temperature data, drainage medium density, and drainage medium load of the underwater vehicle; the phase - change drainage calculation of the target drainage medium according to the designed working parameters of the underwater vehicle to obtain the theoretical drainage capacity of the underwater vehicle includes: Perform a medium state analysis on the target drainage medium according to the working pressure data and the working temperature data to determine the current medium state of the target drainage medium; When the current medium state meets the drainage working conditions, determine the phase - change density of the target drainage medium according to the working pressure data and the working temperature data, and perform a volume conversion according to the phase - change density and the drainage medium load to obtain the theoretical drainage capacity; wherein, the drainage working conditions indicate that the target drainage medium is in a state available for phase - change drainage.

[0011] Optionally, the method further includes: In the case where the current medium state does not meet the drainage working conditions, increase the drainage medium load of the underwater vehicle, and re-determine the current medium state of the target drainage medium until the current medium state meets the drainage working conditions.

[0012] In a second aspect, an embodiment of the present application provides a phase change drainage capacity determination device for an underwater vehicle. A drainage adjustment unit is connected to the drainage tank of the underwater vehicle. The drainage adjustment unit uses a target drainage medium, and the drainage adjustment unit controls the drainage of the drainage tank through the volume change caused by the phase change of the target drainage medium. The device includes: A theoretical drainage calculation module, configured to perform phase change drainage calculation on the target drainage medium according to the designed working parameters of the underwater vehicle to obtain the theoretical drainage capacity of the underwater vehicle; wherein, the designed working parameters are used to describe the working environment of the underwater vehicle when navigating underwater. An energy loss calculation module, configured to calculate the medium energy loss during the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle to obtain the predicted phase change energy loss corresponding to the target drainage medium; wherein, the predicted phase change energy loss is used to describe the energy loss generated by the target drainage medium due to friction or heat exchange during the corresponding drainage process when the underwater vehicle is navigating underwater. An energy loss correction module, configured to correct the energy loss of the theoretical drainage capacity by using the predicted phase change energy loss to obtain the actual drainage capacity of the underwater vehicle.

[0013] In a third aspect, an embodiment of the present application provides a computer device, including: a memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to execute the method according to any one of the above embodiments.

[0014] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which computer instructions are stored, and the computer instructions are used to cause a computer to execute the method according to any one of the above embodiments.

[0015] In a fifth aspect, an embodiment of the present application provides a computer program product, including computer instructions, and the computer instructions are used to cause a computer to execute the method according to any one of the above embodiments. Description of the Drawings

[0016] To more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings required for the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a step diagram of the method for determining the phase change drainage capacity of the underwater vehicle provided in the embodiment of the present application; Figure 2 It is a step diagram of obtaining the predicted phase change energy loss in the embodiment of the present application; Figure 3 It is a schematic structural diagram of the connection between the drainage adjustment unit and the drainage tank in the embodiment of the present application; Figure 4 It is a step diagram of obtaining the pipeline energy loss data in the embodiment of the present application; Figure 5 It is a step diagram of obtaining the bulkhead energy loss data in the embodiment of the present application; Figure 6 It is a step diagram of obtaining the actual drainage capacity in the embodiment of the present application; Figure 7 It is a step diagram of obtaining the theoretical drainage capacity in the embodiment of the present application; Figure 8 It is a module diagram of the device for determining the phase change drainage capacity of the underwater vehicle provided in the embodiment of the present application; Figure 9 It is a schematic structural diagram of a computer device provided in the embodiment of the present application. Specific Embodiments

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0019] With the continuous development of underwater vehicle technology, an underwater vehicle can flexibly change the buoyancy it receives underwater by increasing or decreasing the amount of water stored in the drainage tank, and further change its navigation state during underwater navigation. According to the designed working parameters of the underwater vehicle, determining its drainage capacity is an important step in the design process of the underwater vehicle and is related to the safety of the underwater vehicle during underwater navigation. By determining the drainage capacity of the underwater vehicle, it is ensured that the underwater vehicle has sufficient drainage capacity to adjust its own buoyancy, thereby improving the safety of the underwater vehicle during underwater navigation.

[0020] In related technologies, the drainage adjustment unit usually uses drainage media such as compressed air or directly drives with a pump group for drainage. Since these drainage media do not undergo phase changes or other changes during the drainage process, for an underwater vehicle that controls drainage using the above drainage adjustment unit, its drainage capacity is usually directly determined according to the volume of the medium used by the drainage adjustment unit.

[0021] However, the same method cannot be applied to a drainage adjustment unit that uses the phase change of a drainage medium for drainage. The drainage adjustment unit that uses the phase change of a drainage medium causes a volume change of the drainage medium by using the phase change of the drainage medium, and then uses the drainage medium after the volume change to control the drainage tank for drainage. The drainage medium usually needs to absorb a large amount of energy during the phase change process to achieve a volume change. During the process of the drainage medium being transported to the drainage tank, it comes into contact with the structures inside the underwater vehicle, and the heat exchange with these structures causes energy loss of the drainage medium, which in turn leads to volume compression of the drainage medium. The volume change of the drainage medium directly affects the drainage capacity of the underwater vehicle. If the method in related technologies is directly used, the energy loss that occurs during the transportation of the drainage medium cannot be comprehensively considered, resulting in a decrease in the accuracy of the obtained drainage capacity, limiting the design efficiency of the underwater vehicle, and at the same time affecting the safety of the underwater vehicle.

[0022] Based on the above problems, the present application provides a method, device, equipment and medium for determining the phase change drainage capacity of an underwater vehicle. The drainage tank of the underwater vehicle is connected to a drainage adjustment unit, and the drainage adjustment unit controls the drainage of the drainage tank by the volume change caused by the phase change of the target drainage medium. The method includes: performing phase change drainage calculation on the target drainage medium according to the designed working parameters of the underwater vehicle to obtain the theoretical drainage capacity of the underwater vehicle; calculating the medium energy loss during the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle to obtain the predicted phase change energy loss corresponding to the target drainage medium; using the predicted phase change energy loss to correct the energy loss of the theoretical drainage capacity to obtain the actual drainage capacity of the underwater vehicle.

[0023] The method for determining the phase change drainage capacity of an underwater vehicle provided in this application calculates the medium energy loss based on the structural design parameters of the underwater vehicle to obtain the predicted phase change energy loss that occurs during the transportation of the target drainage medium after phase change; and uses the predicted phase change energy loss to correct the energy loss of the theoretical drainage capacity when the underwater vehicle uses the target drainage medium, so as to obtain the actual drainage capacity of the underwater vehicle.

[0024] Compared with the related technology, this application considers the influence of the structural design of the underwater vehicle on the target drainage medium after phase change, calculates the energy loss caused by friction or heat exchange during the corresponding drainage process of the target drainage medium, so as to determine the degree of volume change that the target drainage medium can actually be used for through phase change, thereby effectively improving the accuracy of the obtained drainage capacity and the reliability of the underwater vehicle design process.

[0025] The method for determining the phase change drainage capacity of the underwater vehicle provided in this specification can be applied to an underwater vehicle provided with a drainage adjustment unit, and the drainage adjustment unit controls the drainage of the drainage tank through the volume change caused by the phase change of the target drainage medium. It can be understood that the method for determining the phase change drainage capacity of the underwater vehicle provided in this specification can be used for different types of underwater vehicles, including manned underwater vehicles or unmanned underwater vehicles.

[0026] According to an embodiment of this application, an embodiment of a method for determining the phase change drainage capacity of an underwater vehicle is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0027] In this embodiment, a method for determining the phase change drainage capacity of an underwater vehicle is provided, which can be used for the above-mentioned underwater vehicle. Refer to Figure 1 As shown, a drainage adjustment unit is connected to the drainage tank of the underwater vehicle. The drainage adjustment unit uses the target drainage medium, and the drainage adjustment unit controls the drainage of the drainage tank through the volume change caused by the phase change of the target drainage medium; the method includes: S100. Perform phase change drainage calculation on the target drainage medium according to the designed working parameters of the underwater vehicle to obtain the theoretical drainage capacity of the underwater vehicle; where the designed working parameters are used to describe the working environment of the underwater vehicle when it is navigating underwater.

[0028] S200. Calculate the medium energy loss of the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle to obtain the predicted phase change energy loss corresponding to the target drainage medium; where the predicted phase change energy loss is used to describe the energy loss caused by friction or heat exchange of the target drainage medium during the corresponding drainage process when the underwater vehicle is navigating underwater.

[0029] S300. The theoretical drainage capacity is corrected for energy loss by using the predicted phase change energy loss to obtain the actual drainage capacity of the underwater vehicle.

[0030] Among them, the target drainage medium can be a medium with significant density differences between multiple phases. The target drainage medium is stored in the drainage adjustment unit in the first phase state. When the drainage adjustment unit is activated to control the drainage of the drainage tank, the target drainage medium receives energy for phase change and is transformed into the second phase state. It should be noted that the density of the target drainage medium in the second phase state is much smaller than that in the first phase state. Therefore, for the same mass of the target drainage medium, its volume in the second phase state is much larger than that in the first phase state. After the target drainage medium becomes the second phase state, it is transmitted to the drainage tank through the connection structure between the drainage adjustment unit and the drainage tank to control the drainage of the drainage tank by using the volume change caused by the phase change, thereby adjusting the buoyancy of the underwater vehicle.

[0031] Exemplarily, the target drainage medium can be carbon dioxide. The density of carbon dioxide in the gaseous state is about 1.976 g / L, the density of carbon dioxide in the liquid state is about 770 g / L, and the density of carbon dioxide in the supercritical state is about 100 g / L to 600 g / L. It can be seen that the density difference between carbon dioxide in the liquid state and in the gaseous or supercritical state is relatively large. When the target drainage medium is carbon dioxide, its first phase state stored in the drainage adjustment unit can be the liquid state, and the second phase state transformed after the phase change can be the gaseous state or the supercritical state. When carbon dioxide undergoes a phase change from the liquid state to the gaseous state or the supercritical state, the volume of carbon dioxide will change to a large extent, providing an effective drainage capacity for the underwater vehicle. In addition, carbon dioxide also has the characteristics of fast conversion speed, safety and controllability, and does not cause pollution to the environment.

[0032] The designed working parameters can be the preset working conditions of the underwater vehicle, including parameters such as the pressure and temperature when the underwater vehicle is working, and are used to describe the working environment of the underwater vehicle when it is navigating underwater. The theoretical drainage capacity can be the drainage capacity obtained by the volume change after the phase change of a set mass of the target drainage medium under the preset working conditions, and it can be obtained by performing phase change calculations according to the designed working parameters of the underwater vehicle.

[0033] The structural design parameters can be the geometric parameters of the mechanical structure in the underwater vehicle for transporting the target drainage medium and draining water, which can be used to describe the flow state of the target drainage medium during transmission in the above mechanical structure, so as to calculate the energy loss generated by the target drainage medium during transmission. Exemplarily, the above mechanical structure may include a transmission pipeline, and the structural design parameters of the transmission pipeline may be the length, inner diameter, roughness, inclination angle, etc. of the transmission pipeline. Through the above structural design parameters, the energy loss generated by the target drainage medium during flow in the transmission pipeline can be calculated.

[0034] Specifically, when designing an underwater vehicle, the total amount of the target drainage medium stored in the drainage adjustment unit can be preset. According to the designed working parameters of the underwater vehicle, the phase change drainage calculation of the target drainage medium is performed under the set working environment to obtain the phase change volume of the target drainage medium after phase change, which is used as the theoretical drainage capacity of the underwater vehicle.

[0035] It should be noted that the drainage tank of the underwater vehicle is connected to the drainage adjustment unit. After the target drainage medium in the drainage adjustment unit undergoes a phase change, it is transported to the drainage tank through the connection structure with the drainage tank, and the drainage tank is controlled to drain water after entering the drainage tank. When passing through the connection structure and the drainage tank, the target drainage medium will come into contact with the surfaces of these mechanical structures, and energy loss of the target drainage medium will be caused due to friction or heat exchange during the contact process. It can be understood that the energy loss will cause the temperature of the target drainage medium to drop, resulting in a decrease in volume, thereby affecting the drainage capacity of the target drainage medium.

[0036] Furthermore, according to the structural design parameters of the above mechanical structure in the underwater vehicle, the possible energy loss of the target drainage medium when passing through the above mechanical structure is predicted to obtain the predicted phase change energy loss corresponding to the target drainage medium. According to the predicted phase change energy loss, the energy change of the target drainage medium during the corresponding drainage process can be accurately grasped, and the theoretical drainage capacity is corrected according to the predicted phase change energy loss to obtain the actual drainage capacity of the underwater vehicle in the case of energy loss. By correcting the energy loss of the theoretical drainage capacity of the underwater vehicle, the accuracy of the obtained drainage capacity is improved, the reliability of the design process is improved, and the drainage capacity and safety of the underwater vehicle are ensured.

[0037] In some embodiments, the design operating parameters may include the phase transition temperature of the target drainage medium after phase transition. This temperature can be determined based on the pre-designed normal temperature range of the underwater vehicle. After obtaining the actual drainage capacity of the underwater vehicle, a test is conducted in a test device using the same parameters to obtain the test drainage capacity. The error between the actual drainage capacity and the test drainage capacity is calculated. If the error does not exceed an error threshold, the actual drainage capacity is accurate. If the error exceeds the error threshold, if the actual drainage capacity is less than the test drainage capacity, it indicates that the predicted phase transition energy loss during the calculation process is too large. In this case, the phase transition temperature can be adjusted by lowering the phase transition temperature to reduce the error between the actual drainage capacity and the test drainage capacity. Conversely, if the actual drainage capacity is greater than the test drainage capacity, it indicates that the predicted phase transition energy loss during the calculation process is too small. In this case, the phase transition temperature can be adjusted by raising the phase transition temperature to reduce the error between the actual drainage capacity and the test drainage capacity.

[0038] The method for determining the phase change drainage capacity of an underwater vehicle provided in this embodiment calculates the medium energy loss based on the structural design parameters of the underwater vehicle to obtain the predicted phase change energy loss of the target drainage medium after phase change during transportation; and uses the predicted phase change energy loss to perform energy loss correction on the theoretical drainage capacity of the underwater vehicle when using the target drainage medium, thereby obtaining the actual drainage capacity of the underwater vehicle.

[0039] Compared with related technologies, the present application takes into account the impact of the structural design of the underwater vehicle on the target drainage medium after phase change, and calculates the energy loss of the target drainage medium due to friction or heat exchange during the corresponding drainage process to determine the degree of volume change that the target drainage medium can actually use due to phase change, thereby effectively improving the accuracy of the obtained drainage capacity and improving the reliability of the underwater vehicle design process.

[0040] Reference Figure 2 As shown, as an embodiment of the present application, the drainage regulating unit and the drainage compartment are connected via a transmission pipeline, and the structural design parameters include the pipeline structural parameters of the transmission pipeline and the cabin structural parameters of the drainage compartment; based on the structural design parameters of the underwater vehicle, the medium energy loss of the drainage process of the underwater vehicle is calculated to obtain the predicted phase change energy loss corresponding to the target drainage medium, including: S210. Based on pipeline structural parameters and pipeline medium state parameters of the target drainage medium, calculate energy loss during the transportation process of the target drainage medium in the transmission pipeline to obtain pipeline energy loss data.

[0041] S220. Based on the cabin structure parameters and the cabin medium state parameters of the target drainage medium, calculate the energy loss of the target drainage medium during the drainage process in the drainage cabin to obtain cabin energy loss data.

[0042] S230. Obtain the predicted phase change energy loss based on the pipeline energy loss data and the cabin energy loss data.

[0043] Refer to Figure 3 As shown, the drainage regulation unit is connected to the drainage cabin through a transmission pipeline. The transmission pipeline can be a pipeline with a complex structure, and multiple local structures such as valves can also be set according to actual needs. The above mechanical structures will all affect the flow of the target drainage medium and generate corresponding energy losses.

[0044] Specifically, based on different pipeline structure parameters, the target drainage medium may have different flow states when flowing in the transmission pipeline. Under different flow states, the target drainage medium will generate different forms of energy losses. Therefore, it is necessary to calculate the energy loss during the transportation process of the target drainage medium in the transmission pipeline according to the pipeline medium state parameters of the target drainage medium. The pipeline medium state parameters of the target drainage medium can be represented by the Reynolds number, and its form is as follows: Among them, Re1 is the pipeline medium state parameter; ρ is the phase change density of the target drainage medium; v1 is the flow velocity of the target drainage medium in the transmission pipeline; D is the inner diameter of the transmission pipeline; μ is the dynamic viscosity of the target drainage medium. The density and dynamic viscosity of the target drainage medium can be obtained by querying the database according to the design working parameters of the underwater vehicle. Exemplarily, the database can be the NIST REFPROP database. The form of the flow velocity of the target drainage medium in the transmission pipeline is as follows: Among them, is the mass flow rate of the target drainage medium; A p is the cross-sectional area of the transmission pipeline, and its form is as follows: According to the numerical range where the pipeline medium state parameter is located, the flow state of the target drainage medium in the transmission pipeline can be determined: if Re1 < 2000, it means that the target drainage medium is in a laminar flow state in the transmission pipeline; if 2000 ≤ Re1 ≤ 4000, it means that the target drainage medium is in a transitional flow state in the transmission pipeline; if Re1 > 4000, it means that the target drainage medium is in a turbulent flow state in the transmission pipeline.

[0045] Furthermore, according to the pipeline structure parameters and the pipeline medium state parameters, calculate the energy loss during the transportation process of the target drainage medium in the transmission pipeline to obtain the pipeline energy loss data. It can be understood that the pipeline energy loss data represents the energy loss generated by the target drainage medium in the transmission pipeline.

[0046] Similarly, based on different cabin structure parameters, there may also be different flow states when the target drainage medium flows in the drainage cabin. It is necessary to calculate the energy loss during the drainage process of the target drainage medium in the drainage cabin according to the cabin medium state parameters of the target drainage medium. The cabin medium state parameters of the target drainage medium can be represented by the Reynolds number, and its form is as follows: where Re2 is the cabin medium state parameter; L c is the characteristic length of the drainage cabin; v2 is the flow velocity of the target drainage medium in the drainage cabin. The selection of the characteristic length is related to the flow direction of the target drainage medium. Exemplarily, when the drainage cabin is cylindrical and the target drainage medium flows along the axial direction of the drainage cabin, the characteristic length can be the equivalent diameter of the drainage cabin. The form of the flow velocity of the target drainage medium in the drainage cabin is as follows: where A c is the cross-sectional area of the drainage cabin, and its form is as follows: According to the numerical range where the cabin medium state parameter is located, the flow state of the target drainage medium in the drainage cabin can be determined: if Re2 < 2000, it means that the target drainage medium is in a laminar flow state in the drainage cabin; if 2000 ≤ Re2 ≤ 4000, it means that the target drainage medium is in a transitional flow state in the drainage cabin; if Re2 > 4000, it means that the target drainage medium is in a turbulent flow state in the drainage cabin.

[0047] Furthermore, according to the cabin structure parameters and the cabin medium state parameters, the energy loss during the drainage process of the target drainage medium in the drainage cabin is calculated to obtain the cabin energy loss data. It can be understood that the cabin energy loss data represents the energy loss generated by the target drainage medium in the drainage cabin.

[0048] Furthermore, by summing the pipeline energy loss data and the cabin energy loss data, the predicted phase change energy loss can be obtained, which is used to represent all the energy losses generated by the target drainage medium due to transportation during the corresponding drainage process, and is used to correct the theoretical drainage capacity of the underwater vehicle, thereby fully considering the influence of the structural design of the underwater vehicle on the phase change of the target drainage medium and improving the accuracy of the obtained drainage capacity.

[0049] Refer to Figure 4 As shown, as an embodiment of the present application, the pipeline structure parameters include the along - the - way structure parameters and the local structure parameters; according to the pipeline structure parameters and the pipeline medium state parameters of the target drainage medium, the energy loss during the transportation process of the target drainage medium in the transmission pipeline is calculated to obtain the pipeline energy loss data, including: S212. Analyze the flow friction characteristics of the target drainage medium according to the along - the - line structure parameters and the pipeline medium state parameters to obtain the friction coefficient of the target drainage medium.

[0050] S214. Perform along - the - line friction calculation on the target drainage medium using the friction coefficient and the along - the - line structure parameters to obtain the along - the - line energy loss data of the target drainage medium.

[0051] S216. Perform local resistance calculation on the target drainage medium according to the local structure parameters and the pipeline medium state parameters to obtain the local energy loss data of the target drainage medium.

[0052] S218. Obtain the pipeline energy loss data based on the along - the - line energy loss data and the local energy loss data.

[0053] Among them, the along - the - line structure parameters can be the geometric dimension data or the material surface properties of the transmission pipeline, including but not limited to the length, inner diameter, roughness, and inclination angle of the transmission pipeline, etc., which are used to determine the influence of the transmission pipeline on the flow of the target drainage medium. The local structure parameters can be the geometric dimension data or the material surface properties of the local structures set in the transmission pipeline. The local structures can be elbows or valves in the transmission pipeline, etc., which are used to determine the influence of the irregular structures in the transmission pipeline on the flow of the target drainage medium.

[0054] Specifically, when the target drainage medium is in a laminar flow state in the transmission pipeline, the form of the friction coefficient of the target drainage medium is as follows: Among them, f is the friction coefficient of the target drainage medium. Since the transitional flow state may locally develop into a turbulent flow state, calculating the transitional flow state as a turbulent flow state can reserve a safety margin for the underwater vehicle. Therefore, when the target drainage medium is in a turbulent or transitional flow state in the transmission pipeline, the form of the friction coefficient of the target drainage medium is as follows: Among them, ε is the absolute roughness of the transmission pipeline.

[0055] Furthermore, the form of the along - the - line energy loss data of the target drainage medium is as follows: Among them, ΔP s is the along - the - line energy loss data; L p is the length of the transmission pipeline. It can be understood that the along - the - line energy loss data represents the energy loss caused by friction when the target drainage medium flows along the transmission pipeline.

[0056] Furthermore, the form of the local energy loss data of the target drainage medium is as follows: where, ΔP l is the local energy loss data; K is the local resistance coefficient, and the local resistance coefficient can be determined according to the type of local structure in the transmission pipeline.

[0057] Furthermore, the form of the pipeline energy loss data is as follows: where, ΔE1 is the pipeline energy loss data; n is the total number of local structures in the transmission pipeline.

[0058] Referring to Figure 5 as shown, as an embodiment of the present application, according to the cabin structure parameters and the cabin medium state parameters of the target drainage medium, an energy loss calculation is performed on the drainage process of the target drainage medium in the drainage cabin to obtain the cabin energy loss data, including: S222. Analyze the convective heat transfer characteristics of the target drainage medium according to the cabin structure parameters and the cabin medium state parameters of the target drainage medium to obtain the convective heat transfer coefficient of the target drainage medium.

[0059] S224. Perform a cabin wall heat exchange calculation on the target drainage medium by using the convective heat transfer coefficient and the cabin structure parameters to obtain the cabin wall energy loss data of the target drainage medium.

[0060] Specifically, the form of the convective heat transfer coefficient of the target drainage medium is as follows: where, h is the convective heat transfer coefficient; Nu is the Nusselt number; k is the thermal conductivity of the target drainage medium. The Nusselt number can be expressed by the Dittus-Boelter equation, and its form is as follows: Nu = 0.023Re2 0.8 Pr 0.3 where, Pr is the Prandtl coefficient, and its form is as follows: where, C p is the specific heat capacity of the target drainage medium.

[0061] In some embodiments, the temperature difference between the target drainage medium and the cabin wall of the drainage cabin can also be obtained. When the temperature difference between the two is greater than the preset temperature difference threshold, the convective heat transfer coefficient of the target drainage medium is corrected by using the heat transfer correction parameter, and the form of the heat transfer correction parameter is as follows: where, C t is the heat transfer correction parameter; μ f is the hydrodynamic viscosity calculated according to the temperature of the target drainage medium; μw is the hydrodynamic viscosity calculated based on the temperature of the drainage tank bulkhead.

[0062] Furthermore, the bulkhead energy loss data of the target drainage medium is in the following form: ΔE2 = h·S c ·ΔT·Δt where ΔE2 is the bulkhead energy loss data; S c is the surface area of contact between the drainage tank and the target drainage medium; ΔT is the temperature difference between the target drainage medium and the drainage tank bulkhead; Δt is the time for the target drainage medium to control the drainage of the drainage tank. Taking a cylindrical drainage tank as an example, the surface area of contact between the drainage tank and the target drainage medium is in the following form: where H is the height of the part of the drainage tank controlled by the target drainage medium for drainage, and its form is as follows: H = v2Δt.

[0063] Referring to Figure 6 shown, as an embodiment of the present application, the theoretical drainage capacity of the underwater vehicle is corrected for energy loss by using the predicted phase change energy loss, and the actual drainage capacity of the underwater vehicle is obtained, including: S310. Calculate the energy loss ratio according to the predicted phase change energy loss and the phase change energy provided by the underwater vehicle to the target drainage medium.

[0064] S320. Correct the theoretical drainage capacity by using the energy loss ratio to obtain the actual drainage capacity.

[0065] Specifically, the energy loss ratio is in the following form: where Q is the total energy provided to the drainage adjustment unit for the phase change of the target drainage medium.

[0066] Furthermore, the actual drainage capacity is in the following form: V a = (1 - α)V t where V a is the actual drainage capacity; V t is the theoretical drainage capacity.

[0067] It can be understood that the present application considers the influence of the structural design of the underwater vehicle on the target drainage medium after phase change, calculates the energy loss caused by friction or heat exchange of the target drainage medium during the corresponding drainage process, so as to determine the degree of volume change that the target drainage medium can actually be used for due to phase change, thereby effectively improving the accuracy of the obtained drainage capacity and the reliability of the underwater vehicle design process.

[0068] Refer to Figure 7 As shown, as an embodiment of the present application, the designed working parameters include the working pressure data, working temperature data, drainage medium density, and drainage medium load of the underwater vehicle; according to the designed working parameters of the underwater vehicle, phase change drainage calculation is performed on the target drainage medium to obtain the theoretical drainage capacity of the underwater vehicle, including: S110. Perform medium state analysis on the target drainage medium according to the working pressure data and working temperature data to determine the current medium state of the target drainage medium.

[0069] S120. When the current medium state meets the drainage working conditions, determine the phase change density of the target drainage medium according to the working pressure data and working temperature data, and perform volume conversion according to the phase change density and the drainage medium load to obtain the theoretical drainage capacity; wherein, the drainage working conditions indicate that the target drainage medium is in a state available for phase change drainage.

[0070] Among them, the working pressure data can be the magnitude of the water pressure suffered by the underwater vehicle during underwater navigation, which is determined according to the designed navigation depth of the underwater vehicle. The working temperature data can be the phase change temperature after the phase change of the target drainage medium, which is determined according to the pre-designed normal temperature range of the underwater vehicle.

[0071] Specifically, the drainage medium density can be obtained according to the drainage medium load of the underwater vehicle and the volume of the drainage adjustment unit for storing the target drainage medium, and its form is as follows: Among them, ρ1 is the drainage medium density; m is the drainage medium load; V s is the volume of the drainage adjustment unit for storing the target drainage medium. According to the drainage medium density, working pressure data, and working temperature data, perform medium state analysis on the target drainage medium to determine the current medium state of the target drainage medium. The method for determining the current medium state can be obtained by querying in the database. Exemplarily, the database can be the NIST REFPROP database. If the target drainage medium is in a state available for phase change drainage, then the current medium state meets the drainage working conditions; if the target drainage medium is in other states and cannot be directly used for drainage, then the current medium state does not meet the drainage working conditions.

[0072] Furthermore, when the current medium state meets the drainage working conditions, determine the phase change density after the phase change of the target drainage medium according to the working pressure data and working temperature data. The phase change density can be obtained by querying in the database. Exemplarily, the database can be the NIST REFPROP database.

[0073] Further, convert according to the drainage medium load and the phase change density of the target drainage medium to determine the theoretical drainage capacity of the underwater vehicle. The form of the theoretical drainage capacity is as follows: It can be understood that the theoretical drainage capacity represents the theoretical drainage capacity that the underwater vehicle can possess when the total amount of the target drainage medium is the drainage medium load and the same phase change energy is provided to the drainage adjustment unit.

[0074] As an embodiment of the present application, the method further includes: S130. When the current medium state does not meet the drainage working conditions, increase the drainage medium load of the underwater vehicle and re-determine the current medium state of the target drainage medium until the current medium state meets the drainage working conditions.

[0075] Specifically, if the target drainage medium is in other states that cannot be directly used for drainage, at this time, the drainage medium load can be increased to the drainage adjustment unit, thereby changing the state of the target drainage medium in the drainage adjustment unit. After each increase in the drainage medium load, the current medium state of the target drainage medium is re-determined until the current medium state meets the drainage working conditions. It can be understood that when the drainage medium load is increased, the form of the theoretical drainage capacity can also be expressed as: wherein, δm is the increased drainage medium load.

[0076] It can be understood that the drainage adjustment unit controls the drainage of the drainage tank by using the significant volume change caused by the conversion of the target drainage medium from a specific first phase state to a second phase state. If the target drainage medium in the drainage adjustment unit is not in the above specific first phase state, it will affect the drainage capacity of the target drainage medium. Therefore, before determining the drainage capacity of the underwater vehicle, it is necessary to ensure that the target drainage medium stored in the drainage adjustment unit is in a state that can be used for phase change drainage.

[0077] Correspondingly, please refer to Figure 8 , an embodiment of the present application provides a device for determining the phase change drainage capacity of an underwater vehicle. The drainage tank of the underwater vehicle is connected to a drainage adjustment unit. The drainage adjustment unit uses the target drainage medium, and the drainage adjustment unit controls the drainage of the drainage tank through the volume change caused by the phase change of the target drainage medium; the device includes: A theoretical drainage calculation module 810, configured to perform phase change drainage calculation on the target drainage medium according to the design working parameters of the underwater vehicle to obtain the theoretical drainage capacity of the underwater vehicle; wherein, the design working parameters are used to describe the working environment of the underwater vehicle when it is navigating underwater.

[0078] An energy loss calculation module 820 is configured to calculate the energy loss of the medium during the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle, so as to obtain the predicted phase change energy loss corresponding to the target drainage medium; wherein, the predicted phase change energy loss is used to describe the energy loss generated by the target drainage medium due to friction or heat exchange during the corresponding drainage process when the underwater vehicle is navigating underwater.

[0079] An energy loss correction module 830 is configured to correct the theoretical drainage capacity by using the predicted phase change energy loss to obtain the actual drainage capacity of the underwater vehicle.

[0080] In some alternative embodiments, the drainage adjustment unit and the drainage tank are connected through a transmission pipeline, and the structural design parameters include the pipeline structure parameters of the transmission pipeline and the chamber structure parameters of the drainage tank; the energy loss calculation module 820 includes: a pipeline energy loss calculation unit configured to calculate the energy loss of the target drainage medium during the transportation process in the transmission pipeline according to the pipeline structure parameters and the pipeline medium state parameters of the target drainage medium, so as to obtain pipeline energy loss data.

[0081] A chamber energy loss calculation unit configured to calculate the energy loss of the target drainage medium during the drainage process in the drainage tank according to the chamber structure parameters and the chamber medium state parameters of the target drainage medium, so as to obtain chamber energy loss data.

[0082] A phase change energy loss prediction unit configured to obtain the predicted phase change energy loss according to the pipeline energy loss data and the chamber energy loss data.

[0083] In some alternative embodiments, the pipeline structure parameters include the along - the - line structure parameters and the local structure parameters; the pipeline energy loss calculation unit includes: A friction coefficient calculation sub - unit configured to analyze the flow friction characteristics of the target drainage medium according to the along - the - line structure parameters and the medium state parameters to obtain the friction coefficient of the target drainage medium.

[0084] An along - the - line friction calculation sub - unit configured to perform along - the - line friction calculation on the target drainage medium by using the friction coefficient and the along - the - line structure parameters to obtain the along - the - line energy loss data of the target drainage medium.

[0085] A local resistance calculation sub - unit configured to perform local resistance calculation on the target drainage medium according to the local structure parameters and the medium state parameters to obtain the local energy loss data of the target drainage medium.

[0086] A pipeline energy loss calculation sub - unit configured to obtain the pipeline energy loss data according to the along - the - line energy loss data and the local energy loss data.

[0087] In some alternative embodiments, the chamber energy loss calculation unit includes: The convective heat transfer coefficient calculation sub-unit is used to analyze the convective heat transfer characteristics of the target drainage medium according to the cabin structure parameters and the cabin medium state parameters of the target drainage medium, so as to obtain the convective heat transfer coefficient of the target drainage medium.

[0088] The bulkhead heat exchange calculation sub-unit is used to perform bulkhead heat exchange calculation on the target drainage medium by using the convective heat transfer coefficient and the cabin structure parameters, so as to obtain the bulkhead energy loss data of the target drainage medium.

[0089] In some alternative embodiments, the energy loss correction module 830 includes: The loss ratio calculation unit is used to perform ratio calculation according to the predicted phase change energy loss and the phase change energy provided by the underwater vehicle to the target drainage medium, so as to obtain the energy loss ratio.

[0090] The energy loss correction unit is used to correct the theoretical drainage capacity by using the energy loss ratio, so as to obtain the actual drainage capacity.

[0091] In some alternative embodiments, the designed operating parameters include the operating pressure data, operating temperature data, drainage medium density and drainage medium load of the underwater vehicle; the theoretical drainage calculation module 810 includes: The medium state analysis unit is used to analyze the medium state of the target drainage medium by using the operating pressure data and the operating temperature data, so as to determine the current medium state of the target drainage medium.

[0092] The medium volume conversion unit is used to determine the phase change density of the target drainage medium according to the operating pressure data and the operating temperature data and perform volume conversion according to the phase change density and the drainage medium load to obtain the theoretical drainage capacity when the current medium state meets the drainage operating conditions; wherein, the drainage operating conditions indicate that the target drainage medium is in a state available for phase change drainage.

[0093] In some alternative embodiments, the theoretical drainage calculation module 810 further includes: The medium load filling unit is used to increase the drainage medium load of the underwater vehicle and re-determine the current medium state of the target drainage medium until the current medium state meets the drainage operating conditions when the current medium state does not meet the drainage operating conditions.

[0094] The further function descriptions of the above-mentioned various modules and units are the same as those in the corresponding embodiments above, and will not be elaborated here.

[0095] The device for determining the phase change drainage capacity of the underwater vehicle in this embodiment is presented in the form of functional units. Here, the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and a memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0096] Please refer to Figure 9 , Figure 9 , which is a schematic structural diagram of a computer device provided by an embodiment of the present application. As shown in the figure, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Each component communicates with each other using different buses and can be installed on a common motherboard or installed in other ways as needed. The processor can process instructions executed within the computer device, including instructions stored in the memory or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some alternative embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (such as an array of servers, a set of blade servers, or a multi-processor system). Figure 9 In

[0097] Processor 10 can be a central processing unit, a network processor, or a combination thereof. Among them, processor 10 can further include a hardware chip. The above hardware chip can be an application specific integrated circuit, a programmable logic device, or a combination thereof. The above programmable logic device can be a complex programmable logic device, a field programmable gate array, a general array logic, or any combination thereof.

[0098] Among them, the memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0099] The memory 20 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some alternative embodiments, the memory 20 may optionally include a memory remotely disposed relative to the processor 10, and these remote memories may be connected to the computer device through a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0100] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk, or a solid-state drive; the memory 20 may further include a combination of the above-mentioned types of memories.

[0101] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0102] The embodiments of the present application further provide a computer-readable storage medium. The methods according to the embodiments of the present application may be implemented in hardware, firmware, or may be implemented as computer code that can be recorded on a storage medium, or may be implemented as computer code originally stored in a remote storage medium or a non-transitory machine-readable storage medium and downloaded through a network and to be stored in a local storage medium, so that the methods described herein can be processed by such software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium may be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid-state drive, etc.; further, the storage medium may further include a combination of the above-mentioned types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code, and when the software or computer code is accessed and executed by the computer, the processor, or the hardware, the methods shown in the above embodiments are implemented.

[0103] The embodiments of the present application provide a computer program product. The computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the methods of any embodiment of the present application.

[0104] Although the embodiments of the present application are described with reference to the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended claims.

[0105] The systems, devices, modules or units illustrated in the above embodiments can be specifically implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0106] For the convenience of description, when describing the above devices, they are described separately as various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0107] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0108] The present application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0109] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device that implements the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1The functions specified in one or more boxes.

[0110] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide for implementing the steps of the functions specified in one Figure 1 one process or more processes and / or boxes Figure 1 or more boxes.

[0111] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, commodity or device comprising the said element.

[0112] Each embodiment in this specification is described in a progressive manner. The same or similar parts among 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.

[0113] The above are only the embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

[0114] Although the embodiments of the present 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 the present application, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A method for determining the phase change drainage capacity of an underwater vehicle, characterized in that The drainage tank of the underwater vehicle is connected with a drainage adjustment unit. The drainage adjustment unit uses a target drainage medium, and the drainage adjustment unit controls the drainage of the drainage tank through the volume change caused by the phase change of the target drainage medium. The method includes: Performing phase change drainage calculation on the target drainage medium according to the designed working parameters of the underwater vehicle to obtain the theoretical drainage capacity of the underwater vehicle. Wherein, the designed working parameters are used to describe the working environment of the underwater vehicle during underwater navigation. Performing medium energy loss calculation on the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle to obtain the predicted phase change energy loss corresponding to the target drainage medium. Wherein, the predicted phase change energy loss is used to describe the energy loss generated by the target drainage medium due to friction or heat exchange during the corresponding drainage process of the underwater vehicle during underwater navigation. Using the predicted phase change energy loss to correct the energy loss of the theoretical drainage capacity to obtain the actual drainage capacity of the underwater vehicle.

2. The method according to claim 1, wherein The drainage adjustment unit and the drainage tank are connected through a transmission pipeline. The structural design parameters include the pipeline structure parameters of the transmission pipeline and the chamber structure parameters of the drainage tank. The performing medium energy loss calculation on the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle to obtain the predicted phase change energy loss corresponding to the target drainage medium includes: Performing energy loss calculation on the conveying process of the target drainage medium in the transmission pipeline according to the pipeline structure parameters and the pipeline medium state parameters of the target drainage medium to obtain pipeline energy loss data. Performing energy loss calculation on the drainage process of the target drainage medium in the drainage tank according to the chamber structure parameters and the chamber medium state parameters of the target drainage medium to obtain chamber energy loss data. Obtaining the predicted phase change energy loss according to the pipeline energy loss data and the chamber energy loss data.

3. The method according to claim 2, characterized in that The pipeline structure parameters include the along - the - line structure parameters and the local structure parameters. The performing energy loss calculation on the conveying process of the target drainage medium in the transmission pipeline according to the pipeline structure parameters and the pipeline medium state parameters of the target drainage medium to obtain pipeline energy loss data includes: Analyzing the flow friction characteristics of the target drainage medium according to the along - the - line structure parameters and the pipeline medium state parameters to obtain the friction coefficient of the target drainage medium. Performing along - the - line friction calculation on the target drainage medium using the friction coefficient and the along - the - line structure parameters to obtain the along - the - line energy loss data of the target drainage medium. Performing local resistance calculation on the target drainage medium according to the local structure parameters and the pipeline medium state parameters to obtain the local energy loss data of the target drainage medium. Obtaining the pipeline energy loss data according to the along - the - line energy loss data and the local energy loss data.

4. The method according to claim 2, characterized in that, Calculating the energy loss during the drainage process of the target drainage medium in the drainage tank based on the cabin structure parameters and the cabin medium state parameters of the target drainage medium, to obtain cabin energy loss data, including: Performing convective heat transfer characteristic analysis on the target drainage medium according to the cabin structure parameters and the cabin medium state parameters of the target drainage medium, to obtain the convective heat transfer coefficient of the target drainage medium; Performing cabin wall heat exchange calculation on the target drainage medium by using the convective heat transfer coefficient and the cabin structure parameters, to obtain the cabin wall energy loss data of the target drainage medium.

5. The method according to claim 1, characterized in that, Using the predicted phase change energy loss to correct the theoretical drainage capacity for energy loss, to obtain the actual drainage capacity of the underwater vehicle, including: Performing a proportional calculation based on the predicted phase change energy loss and the phase change energy provided by the underwater vehicle to the target drainage medium, to obtain an energy loss ratio; Using the energy loss ratio to correct the theoretical drainage capacity, to obtain the actual drainage capacity.

6. The method according to any one of claims 1 to 5, characterized in that, The designed operating parameters include the operating pressure data, operating temperature data, drainage medium density, and drainage medium load of the underwater vehicle; performing phase change drainage calculation on the target drainage medium according to the designed operating parameters of the underwater vehicle, to obtain the theoretical drainage capacity of the underwater vehicle, including: Performing medium state analysis on the target drainage medium according to the operating pressure data and the operating temperature data, to determine the current medium state of the target drainage medium; When the current medium state meets the drainage operating conditions, determining the phase change density of the target drainage medium according to the operating pressure data and the operating temperature data, and performing volume conversion according to the phase change density and the drainage medium load, to obtain the theoretical drainage capacity; wherein, the drainage operating conditions indicate that the target drainage medium is in a state available for phase change drainage.

7. The method according to claim 6, characterized in that, The method further includes: When the current medium state does not meet the drainage operating conditions, increasing the drainage medium load of the underwater vehicle, and re-determining the current medium state of the target drainage medium until the current medium state meets the drainage operating conditions.

8. A device for determining the phase change drainage capacity of an underwater vehicle, characterized in that, The drainage tank of the underwater vehicle is connected with a drainage adjustment unit, the drainage adjustment unit uses the target drainage medium, and the drainage adjustment unit controls the drainage of the drainage tank through the volume change caused by the phase change of the target drainage medium; the device includes: A theoretical drainage calculation module, configured to perform phase change drainage calculation on the target drainage medium according to the designed operating parameters of the underwater vehicle, to obtain the theoretical drainage capacity of the underwater vehicle; wherein, the designed operating parameters are used to describe the operating environment of the underwater vehicle during underwater navigation. An energy loss calculation module for calculating the energy loss of the drainage medium during the drainage process of the underwater vehicle according to the structural design parameters of the underwater vehicle, so as to obtain the predicted phase change energy loss corresponding to the target drainage medium; wherein, the predicted phase change energy loss is used to describe the energy loss generated by friction or heat exchange during the corresponding drainage process of the target drainage medium when the underwater vehicle is navigating underwater. An energy loss correction module for correcting the energy loss of the theoretical drainage capacity by using the predicted phase change energy loss to obtain the actual drainage capacity of the underwater vehicle.

9. A computer device, characterized in that, Comprising: A memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, Computer instructions are stored on the computer-readable storage medium, and the computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 7.

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